dap 4
TM
Installation, Operation
& Maintenance Manual
Data Aire, Inc.
230 W. BlueRidge Avenue
Orange, CA 92865
www.dataaire.com
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Data Aire, Inc. reserves the right to make design changes for the purpose
of product improvement or to withdraw any design without notice.
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Table of Contents
Introduction
Standard Features................................................................................................................. 5
Operational Features............................................................................................................. 6
Diagnostics and Service Features......................................................................................... 6
Display Panel......................................................................................................................... 7
Functions Displayed............................................................................................................... 7
Warnings and Alarms Displayed............................................................................................ 7
Historical Data Displayed....................................................................................................... 7
Programmable Selections...................................................................................................... 8
Getting Started
Powering the Unit ON/OFF.................................................................................................. 10
Accessing Menus/Passwords.............................................................................................. 10
Service Level Password........................................................................................................11
Changing the Service Level Password................................................................................ 12
Menus
Menu A - ON/OFF................................................................................................................ 13
Menu B - Setpoints.............................................................................................................. 14
Menu C - Clock/Scheduler................................................................................................... 16
Menu D - Input/Output......................................................................................................... 20
Menu E - Historical Data...................................................................................................... 23
Menu F - Information............................................................................................................ 25
Menu G - Network Config.................................................................................................... 26
Menu H - Calibrate Sensors................................................................................................. 27
Menu I - Manual Control...................................................................................................... 29
Menu J - Factory Setting...................................................................................................... 31
Menu K - Alarms and Limits................................................................................................. 39
Menu L - Configure I/O......................................................................................................... 47
dap4 Control Logic................................................................................................................... 65
Temperature Sensor Chart..................................................................................................... 100
Terminal Block Wiring Diagram.............................................................................................. 101
dap4 Control Board PIN ID.................................................................................................... 102
Manual Bypass Switches....................................................................................................... 104
Addendum for the gPod Model.............................................................................................. 105
Contact Data Aire....................................................................................................................110
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dapTM 4
The dap4 continues the tradition of advanced electronic devices from Data Aire for monitoring and control of computer
room air conditioning units which began in 1977. Each generation has provided more accurate monitoring information
and flexibility in controlling the unit. The dap4 offers the definite answer for precision environmental control. The dap4 control system not only controls
and monitors temperature, humidity, airflow and cleanliness, it provides component run times, alarm history and an
automatic self-test of the microprocessor. All messages are sequentially displayed on a backlit LCD (liquid crystal
display). The dap4 can interface with a variety of building management systems (BMS).
STANDARD FEATURES
Stand Alone Panel: Service terminals or additional devices are not required for programming or monitoring functions
Microprocessor Based: 32 bit, 44 MHz Micro controller. State-of-the-Art technology and reliability in a programmable solid-state control module
LED Illuminated Keys: Six highly reliable keys allow movement through the menus
Backlit Liquid Crystal Display (LCD): Information is displayed and presented in a format that is easily viewed and
understood
All Settings are Programmable from the Face of the Panel: Expedient and user friendly
USB Port: Allows upload of software
Multi-Level Password Access: Controls any unauthorized changes to settings and system functions
Database of Unit and Room Conditions: Historical data that facilitates service, apparatus set-up and fine tuning of
setpoints
Rechargeable Battery Backup for Historical Data: Extensive historical data is preserved by integral battery backup
in case of power failure
Factory Programmed Menus: Menus that pertain to the type and method of cooling, reheat and humidification
based on the unit’s components and options
Programmed Settings Saved in Flash Memory: Non-volatile memory stored so all control settings and operational
parameters are secured indefinitely even during a power outage
Factory Calibrated Temperature and Humidity Sensors: Accurate and consistent regulation especially in multiple
unit applications
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OPERATIONAL FEATURES
(Optional features may require additional components and/or sensors)
Sequential Load Activation: Time and temperature based logic that sequentially starts and stops stages of cooling
and reheat
Compressor Short-Cycle Control: Prevents excessive compressor wear by using restart and anti-cycle limits
Automatic or Manual Restart: Restart methods are programmable in the event of a power failure
Supplemental Compressor Operation during Energy Saver Mode: Extends the savings from Energy Saver by allowing one or two compressors to supplement the cooling as needed when Energy Saver cooling is not sufficient
Humidity Anticipation: Modifies the humidity setpoint to reduce excess humidification and dehumidification
Dehumidification Mode Lockout: Inhibits dehumidification if not required for system performance
Start Time Delay: Programmable time delay staggers the start-up of multiple units to prevent high power demand
peaks
Chilled Water, Energy Saver and Hot Water Coil Flush Cycle: Periodically circulates fluid in the coil to reduce
deposit build-up in system
Automatic Compressor Rotation: Periodically rotates the lead/lag compressor sequence to balance run times
Automatic Reheat Element Rotation: Rotates the staging sequence to balance the heating elements run times
Energy Saver (Glycol) or Auxiliary Chilled Water Operation: Two types of Energy Savers Systems are available
Programmable Water Under the Floor Alarm: Programmable to activate alarm, stop compressor operation or complete unit shut down
DIAGNOSTICS AND SERVICE FEATURES
Alarms Displayed in Order of Occurrence: Sequence with time of occurrence assist in diagnosing the cause of
alarm(s)
Programmable Delays for Optional Alarms: Reduces nuisance and false alarms caused by temporary or transient
conditions
Manual Diagnostics Program: Provides accessible procedures to test the processor and major system components
External Manual Override for Blower, Cool 1, Cool 2, Humidification, Water Valve and Fan Speed Control: The
control circuit is operable if the processor is not functioning properly
Adjustable Alarm Limits: Threshold levels for temperature and humidity alarms are programmable
Four Programmable Alarms Contacts: Four standard alarms contacts are programmable for remote monitoring
Audio Alarm Tone: Three (3) programmable alarm tones are available
Alarm History: 100 alarms can be stored for system follow-up
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DISPLAY PANEL
Conditions and Data Displayed
TEMPERATURE: Current return air temperature (°F or °C)
UNIT TYPE: Data Aire model type
DISCHARGE AIR: Current Discharge Air Temp (°F or °C)*
DATE: Current date (month/day/year)
UNIT ID/ZONE ID: Assigned unit ID and Zone Number*
TIME: Current time (hour/minute)
TEMPERATURE SETPOINT: Current temp setpoint (°F or °C)
UNIT STATUS: ON or OFF
HUMIDITY SETPOINT: Current humidity setpoint (%)
HUMIDITY: Current return air humidity (%)
CHILLED WATER TEMPERATURE: Current Chilled Water Temperature (°F or °C)*
* This optional feature or data display may require additional components and/or sensors
FUNCTIONS DISPLAYED
COOLING: 1st stage, 2nd stage, 3rd stage*, 4th stage*
HUMIDIFICATION: Appears when operating
DEHUMIDIFICATION: Appears when operating
REHEAT: 1st stage, 2nd stage, 3rd stage
CHILLED WATER FLOW: 10-100% (based on VDC output)
ENERGY SAVER: Appears when operating
FAN SPEED: 0-100% (based on VDC output – plug fan units
* This optional feature or data display may require additional components and/or sensors
WARNINGS AND ALARMS DISPLAYED
HIGH TEMPERATURE WARNING
HIGH HUMIDITY WARNING
POWER FAILURE RESTART
UNDER FLOOR WATER DETECTION
LOW PRESSURE COMPRESSOR 1
MANUAL OVERRIDE
HUMIDIFIER PROBLEM*
TEMPERATURE SENSOR FAILURE
COMPRESSOR SHORT CYCLE
LOCAL ALARM*
CUSTOM MESSAGE*
DISCHARGE AIR SENSOR ERROR*
STANDBY PUMP ON*
HIGH PRESSURE/INTERNAL OVERLOAD COMP 1
LOW TEMPERATURE WARNING
LOW HUMIDITY WARNING
NO AIRFLOW
DIRTY FILTER
LOW PRESSURE COMPRESSOR 2
FIRESTAT TRIPPED
MAINTENANCE REQUIRED
HUMIDITY SENSOR FAILURE
NO WATER FLOW*
SMOKE DETECTOR*
FAN MOTOR OVERLOAD*
HIGH CONDENSATE WATER LEVEL*
PERSON TO CONTACT ON ALARM
HIGH PRESSURE/INTERNAL OVERLOAD COMP 2
* This optional feature or data display may require additional components and/or sensors
HISTORICAL DATA DISPLAYED
EQUIPMENT RUNTIMES: Blower, compressor 1, compressor 2, reheat strip 1, 2, and 3, dehumidification, Energy
Saver*, humidifier, condenser and chilled water
ALARM HISTORY: Alarm list with time and date of occurrence
LAST 24 HOURS: High and low temperature, high and low humidity
AVERAGE PERCENT OF CAPACITY LAST HOUR: Compressor(s), humidifier, reheat strips and water valve
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PROGRAMMABLE SELECTIONS
TEMPERATURE SETPOINT
TEMPERATURE DEADBAND
HIGH TEMPERATURE ALARM LIMIT
LOW TEMPERATURE ALARM LIMIT
HUMIDITY SETPOINT
HUMIDITY DEADBAND
HIGH HUMIDITY ALARM LIMIT
LOW HUMIDITY ALARM LIMIT
COMPRESSOR LEAD/LAG SEQUENCE
RESET EQUIPMENT RUNTIMES
AUDIO ALARM MODE
HUMIDITY ANTIC PAT ION
COMPRESSOR SHORT CYCLE ALARM
DEHUMIDIFICATION MODE
LOW DISCHARGE TEMPERATURE ALARM LIMIT*
POWER RESTART/RESTART MODE
SYSTEM START DELAY
MANUAL DIAGNOSTICS
MESSAGE FOR OPTIONAL ALARM 1, 2, 3, and 4*
PERSON TO CONTACT ON ALARM
DELAY FOR OPTIONAL ALARM 1, 2, 3, and 4
WATER VALVE MODE
COMPRESSOR ASSIST TO ENERGY SAVER
HUMIDIFIER AUTOFLUSH TIMER*
REMOTE ALARM 1, 2, 3, and 4 SELECTION
TEMPERATURE SCALE
FIRESTAT TEMPERATURE ALARM LIMIT
REHEAT STAGES
CALIBRATE TEMPERATURE SENSOR
COMPRESSORS
CALIBRATE HUMIDITY SENSOR
HUMIDIFIER
SCHEDULED NORMAL MAINTENANCE
WATER VALVE VOLTAGE RANGE
NETWORK PROTOCOL*
REVERSE ACTING WATER VALVE
CALIBRATE DISCHARGE AIR SENSOR*
COOLING STAGE to STAGE BAND
CALIBRATE CHILLED WATER TEMPERATURE SENSOR*
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Getting Started:
The dap4 consists of two main components: the control module and the display panel. The control module is located
in the electrical panel. The display panel is remotely mounted to one of the outer front doors. The two are connected
by special telephone type cable harness (units may be ordered with longer cables for optional remote wall mounting).
Note: If used, regular telephone cable will not operate. Factory cable is required.
All data displayed on the display screen originates from the control module. The display panel has a backlit LCD (liquid crystal display). There are six keys on the face of the display panel to retrieve or enter settings.
Control Module
Display Module
Display Alarm
Up
Enter Menu
Enter/Select
Return to
previous
screen or
hold to turn
On or OFF
Down
Button Functions
Allows viewing of active alarms
Silences audible alarms
Resets active alarms
Allows entry to Main Menu
Return to previous screen
Hold to turn ON or OFF
Allows scrolling to next screen
Allows values changes (increase)
Allows entry to Menus
Advances cursor
Returns to previous screen
Allows value changes (decrease)
The Main Screen allows you to see the current unit status (temperature, relative humidity and operating mode –
cooling, humidification, etc.). 9 • dap4 User Manual
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DA gForce
05/19/11
12:08
TSP 72.0 F Hum SP 50%
Unit Status:
UnitOn
Powering the Unit ON/OFF
Before powering unit ON, check that power is available and proper connections have been
completed
Note: The unit is shipped with the control power in the OFF (Off by Key) position
Turn the disconnect switch to the ON position. The controller display keys and screen will illuminate and the processor will conduct a self-test (the screen will remain illuminated with no messages until the testing is complete). The self-test takes approximately 20 seconds. Once completed,
the Main Menu screen w ill be displayed.
The Main Menu screen will display the unit type, date and time, and unit status. In addition, the
screen will scroll and display the temperature, relative humidity and operating mode.
The Unit Status will indicate the unit: “OFF by Key”
The unit may be turned ON at any time. Hold the Esc key for approximately 5 seconds. The display will continue to scroll and display messages. At the same time the unit status is changed to
“Unit On”. Once powered there will be a 5-600 second start delay indicated by
“Time Before Start: XXs”.
Note: The start time delay is programmable from 5-600 seconds (Menu A – ON/OFF). The factory setting is 5 seconds.
For initial programming of setpoints, alarms, delays, etc. it is not necessary to have the unit ON.
With the unit in the “OFF by Key” mode, all settings are available to view and change (other than
Menus J – Factory Settings and L – Configure Inputs/Outputs) if the proper password is entered.
Once the desired settings are complete, change to the Unit to ON by holding the Esc Key for
approximately (five) 5 seconds.
Accessing Menus/Passwords
To access any Menu a numerical password is required. There are three levels of password:
•
•
•
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SERVICE LEVEL
FACTORY LEVEL
ZONE MASTER
The SERVICE LEVEL password allows viewing and changes to the following Menus:
A.
B.
C.
D.
E.
F.
G.
H.
I.
K.
On/Off
Setpoint
Clock/Scheduler
Input/Output
Historical Data
Information
Network Configuration
Sensor Calibration
Manual Control
Alarms/Limits
The FACTORY LEVEL password allows changes to the SERVICE LEVEL Menus plus the following Menus:
J. Factory Settings
L. Configure I/O
The ZONE MASTER password is only required for those units with optional Zone Master control.
To enter the Menu and Sub-Menu screens, press the MENU key on the display panel. A password will be requested. The password is a four digit entry (including 0). Units are shipped from
the factory with the password requirement bypassed to accommodate start-up and set-up.
The display screen will have the following message:
Security Access
Insert Service/Factory
level password: 0000
The Service Level Password setting from the factory is: 0000
The cursor will be flashing by the Security Access message at the top of the screen. Press the
ENTER key to move the cursor. The cursor will flash at the first input (represented by a 0). Press
the UP or DOWN keys to increase or decrease the value. Once the value is entered, press the
ENTER key to move to the next input. Increase or decrease the value by pressing the UP or
DOWN keys. Once the value is entered, press the ENTER key to move to the next input.
Once all four values are entered, press the Enter key. If the password is incorrect, the following
message will appear: Password Wrong! The cursor will return to the first input value. Follow the
same procedure to re-enter the password.
Once the correct password is entered and accepted, the Menus will display on the screen. Only
those Menus allowed through the Service Password will be available. Use the UP or DOWN keys
to scroll through the available Menus.
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Note: Factory Level Menus are for configuring the unit. The dap4 controller is used for a variety
of equipment types. The controller is based on the unit type, unit components and options. Under
normal circumstances these menus should not be changed. If they need to be changed, please
consult with Data Aire engineering or service personnel before proceeding.
Changing the Service Level Password
The Service Level password can be changed by doing the following:
Enter the Main Menu by pressing the Menu key. You will be prompted to Insert the Service Level
password. Enter the current password as previously explained.
▼ Press the Menu key. The screen will display the following message:
Service Security
Change service level
password (PWI): 0000
▼ Press the Enter key. The cursor will highlight the first input. Change the input by pressing the
UP or Down key. Once the selected number is displayed, press the Enter key to move to the next
input. Repeat the same steps for each input.
After the last input has been entered, press the MENU key to return to Main Menu. The password
is stored.
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Entering Menu Settings
MENU A – ON/OFF
MENU A allows the unit power to be switched from ON to OFF and OFF to ON (Service Level
password is required for entry).
Enter Menu A by pressing the MENU key. Use the UP or DOWN key to scroll through the menus.
Press the UP or DOWN key until “A. On/Off” (factory setting) appears and is highlighted. Press
the ENTER key.
The following will appear on the display screen:
On/Off Unit
Start-up Delay:
Start-up Mode:
Start-up: Unit On
5S
Off
Hold ESC for 5 seconds
to turn unit ON or OFF
The cursor will be flashing at the upper left hand corner. Press the ENTER key. The cursor will
move to the “Change to: SWITCH OFF”. Press either the UP or DOWN button to change the
status. Press the ENTER key to save the setting.
•
•
•
If selecting SWITCH OFF, the STATUS will change to: OFFbyKey. The unit will be OFF
If selecting SWITCH ON, the STATUS will change to: UnitOn. The unit will be ON
When switching from the SWITCH OFF selection to the SWITCH ON (and pressing the
ENTER key), the following message will appear: Time Before Start: XXs
Note: The start time delay is programmable from 5-600 seconds (Menu J – Factory Settings)
Once a selection is made, press the MENU key to leave MENU A. The Main Menu screen will
continue to display other menus (B, C, E and F). To look at any of these menus scroll to the
desired menu. Press the ENTER key. If you choose to return to the Main Screen, press the Esc
key.
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MENU B - SETPOINTS
MENU B allows viewing and changing of Setpoints (Service Level password is required for entry)
Press the UP or DOWN key until “B. Setpoint” appears and is highlighted. Press the ENTER key.
Use the UP or DOWN key to scroll through the screens. Menu B has two screens.
The following will appear on the first Menu B screen (values are for reference only):
Setpoints
TEMP SETPOINT
TEMP DEADBAND:
STAGE to STAGE:
ENGY SVR SETPT:
DEADBAND:
CHANGE OVER:
72.0oF
2.0oF
0.3oF
50.0oF
1.0oF
2.0oF
Press the UP or DOWN key. The following will appear on the screen:
Setpoints
HUM SETPOINT:
HUM DEADBAND:
50%
3%
FACTORY SETTINGS
TEMPERATURE: .............. 72.0°F
......................................................
DEADBAND: ....................... 2.0°F
STAGE TO STAGE: ............ 0.3°F
ENGY SVR SETPT: .......... 50.0°F
DEADBAND: ....................... 1.0°F
CHANGE OVER: ................. 2.0°F
HUM SETPOINT: .................. 50%
HUM DEADBAND: .................. 3%
(Temperature range for DX: 65 - 85°F)
(Temperature range for CW: 65 - 105°F)
(Temperature Deadband range: 2 - 5°F)
(Stage-to-Stage range: 0.3 - 3.0°F)
(Setpoint range: 40.0 - 60.0°F)
(Deadband range: 1.0 - 5.0°F)
(Change over range: 2.0 - 5.0°F)
(Humidity range: 25 - 70%)
(Humidity deadband range: 1 - 15%)
If Humidity Anticipation is turned ON in humidity setting under Menu J – Factory Settings, the
following page appears for reference (cannot be edited):
Humidity Anticipation
HUM SETPOINT:......................50%
TEMP OFFSET:..........................2%
ANTICIPATION SP:..................48%
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To change the value of any one of the setpoint values, move the cursor by pressing the ENTER
key to the desired setpoint. The cursor will flash on the input value. Press the UP or DOWN button
to increase or decrease the value. Once the desired setpoint value has been changed, press the
ENTER key to move to the next setting or until the cursor is at the top of the screen. Exit the Setpoint Menu by pressing the Esc key. The display screen will return to the MAIN
MENU. Use the UP or DOWN Keys to advance to another Menu or press the Esc Key to return to
the normal operating mode.
Note: Changes to any MENU input will remain and can only be changed manually (as described
above)
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MENU C – Clock/Scheduler
MENU C allows programming for setting night set-back, week-end and special day schedules
Menu C should only be used for non-critical applications where units may be cycled off
without any damage to sensitive electronic equipment. The typical application is comfort
cooling where units may be shut down during non-working hours.
Enter Menu C by pressing the ENTER key. The following message will be displayed (values are
for reference only):
Clock Settings
Day:
Date:
Hour:
Saturday
05/16/11
09:39
To change the date or time, move the cursor by pressing the ENTER key to the date. To change
the date, use the UP or DOWN keys. By pressing the ENTER key the cursor will move from segment to segment. Only the UP and DOWN keys will change the value. The day will automatically
change when the date has been altered.
Press the ENTER key until the cursor is in the title block (upper left hand corner). Press the UP or
DOWN key to see the next screen. The following will be displayed (values are for reference only):
Set-Back Settings
Set-Back Enable
No
Override Time:
12Hrs
Cooling Offset:
5.0oF
Heating Offset:
5.0oF
Humidify Offset:
10%
Dehumidify Offset:
10%
Note: Leaving the “Set-Back Enable” as NO, the set-back feature is non-operational and is the
recommended setting for applications with constant load and cooling requirements.
The factory setting is: NO
Ranges:
Override Time - the range is 1 - 12 hours
Heating Offset - the range is 0 - 30°F
Dehumidify Offset - the range is 0 - 30%
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Cooling Offset - the range is 0 - 30°F
Humidify Offset - the range is 0 - 30%
If Set-Back enable is YES, the Override Schedule will appear as the following (values are for reference only):
Set-Back Settings
Set-Back Enable
Yes
Override Schedule
No
Override Time:
12Hrs
Cooling Offset:
5.0oF
Heating Offset:
5.0oF
Humidify Offset:
10%
Dehumidify Offset:
10%
To change values, move the cursor to the desired input by pressing the ENTER key. Change the
value by pressing either the UP or DOWN key. Once all changes are made to inputs on screen,
move the cursor to the top and press the UP or DOWN keys to move to the next screen or press
the MENU key to return to Main Menu screen.
Week Day Scheduler (only appears if the above Set-Back Enable selection was YES)
From the “Set-Back Settings” screen (with cursor at the top), press the DOWN key.
The following will be displayed (values are for reference only):
Week Day Scheduler
Day: MONDAY
Copy to: Monday
No
Settings
1: 06:00
Normal SP
2: 17:00
Normal SP
3: --:-------4: --:--------
Screen Inputs
Press the ENTER key to move the cursor. The cursor will flash at the day (Monday). By pressing
the UP or DOWN key all the days of the week can be viewed (or selected).
Press the ENTER key. The cursor will flash on the “Copy to: Day” Pressing the UP or DOWN
key all the days of the week can be viewed.
The “Copy to:” function allows the user to copy setting from other days without going through the
settings routine. By pressing the ENTER key, position the cursor on the Day. Press the UP or
DOWN keys to scroll through the days of the week. Select the day that has been programmed
and is to be copied. Press the ENTER key. The cursor will flash on the “Copy to:”. Scroll through
the days using the UP or DOWN key. Select the day to copy. Press the ENTER key. The cursor
will flash by the NO message. Press the UP or DOWN key to change for to YES. Press the
ENTER key. The display will have a SUCCESSFUL COPY message (which quickly is automatically removed).
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The cursor will return to the title block. Repeat the same step for each day to be copied or select
ALL.
▼ Press the ENTER key. The cursor will flash on the “NO or YES” setting. Pressing the UP or
DOWN key will change from YES to NO or NO to YES. Leave in the NO setting until selections
have been made.
▼ Press the ENTER key. The cursor will flash on the first time setting. All time is on a 24 hour
clock (i.e. 6:00 PM = 18:00 hours). The start time (line # 1) is selected by pressing the UP or
DOWN key.
▼ Press the ENTER key to change the hour. By pressing the UP or DOWN key, the hour will
change. Once the correct hour is selected, press the Enter key.
The cursor will flash on the minutes. By pressing the UP or DOWN key, the minutes will change. Once the correct minutes are selected, press the Enter key.
The cursor will be positioned on the settings input. Press the DOWN key to view the available
selections:
Set-Back;
Normal SP (setpoint)
Turn Off
▼ Press the ENTER key. The cursor will flash on the second time setting.
Repeat the steps to set the second time setting (and third and fourth if used).
Once the settings are complete, with the cursor in the title block, press the DOWN key to advance
to the next screen or press Esc to return to the Main Menu or press the Esc key to return to normal operation.
The following will be displayed (values are for reference only):
Holiday Scheduler
Date
Date
Start
Stop
Setting
07/04
--/---/--
07/05
--/---/--
Turn Off
-------------------
Available settings:
Normal SP
Turn Off
Set-Back
Once the settings are complete, with the cursor in the title block, press the DOWN key to advance
to the next screen or press Esc to return to the Main Menu or press the Esc key to return to
normal operation.
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The following will be displayed (values are for reference only):
Special Day Scheduler
Day
Date
Schedule
SD1:
--/--------SD2:
--/--------SD3
--/--------SD4:
--/--------SD5:
--/--------SD6:
--/---------
Available settings:
Normal SP
Turn Off
Set-Back
Once the settings are complete, with the cursor in the title block, press the DOWN key to advance
to the next screen or press Esc to return to the Main Menu or press the Esc key to return to normal operation.
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MENU D – INPUT/OUTPUT
MENU D is a view only menu allowing the user to view the various input and outputs. The values
are factory set and only if instructed by Data Aire engineering or service personnel should these
be changed.
To view, press the Menu key. A prompt for the password will be displayed on the display module. Once the password is entered, the Main Menu screen will display the various menus. Scroll
through the menus using either the UP or DOWN keys. Move Menu D to the highlighted area and
press the ENTER key.
The following will be displayed (values are for reference only):
Digital Inputs
1 2 3 4 5 6 7 8 9
n n n n
10
11 12 13 14 15
16 17 18
n = Input is Active
▼ Press the DOWN key to view the next screen.
The following will be displayed (values are for reference only):
Digital Outputs
n 2 3 4
11 12 13
5 n n 8
14 15 16
9 10
17
n = Output is Energized
▼ Press the DOWN key to view the next screen. The following will be displayed (values are for reference only):
Analog Input
Return Air Humidity
Input B01:
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44.2
▼ Press the DOWN key to view the next screen.
The following will be displayed (values are for reference only):
Analog Input
Return Air Temp
Input B04:
70.8oF
▼ Press the DOWN key to view the next screen.
The following will be displayed (values are for reference only):
Analog Output 3
Fan Speed
Output B04:
8.50vdc
▼ Press the DOWN key to view the next screen.
The following will be displayed (values are for reference only):
Analog Output 4
Optional Output #1
Output
0.00vdc
▼ Press the DOWN key to view the next screen.
The following will be displayed (values are for reference only):
Analog Output 5
Optional Output #2
Output
0.00vdc
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▼ Press the DOWN key to view the next screen. The following will be displayed (values are for reference only):
Analog Output 5
Optional Output #2
Output
0.00vdc
All screens have been viewed. BY pressing the UP or DOWN keys, the screens can be viewed.
▼ Press the MENU key to return to the main menu. Choose another menu by pressing the UP or
DOWN keys or press ESC to return the main menu.
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MENU E – Historical Data
MENU E allows viewing alarms, component runtimes and resetting of component runtimes.
The first screen will display (if any) alarm history
▼ Press the ENTER key to view
The following will be displayed (inputs are for reference only):
Time and Date of Alarm
Alarm Type
Humidity at time of occurrence
Chilled Water temperature at time of occurrence (if applicable)
Discharge Air Temperature at time of occurrence (if applicable)
11:13:10
10/1/11
C1 Lo Pressure
Humidity:
51%
Return Air:
71.6oF
Chilled Water:
xx.xoF
Discharge Aire:
xx.xoF
To view consecutive alarms press the ENTER key moving the cursor into the screen area.
▼ Press the UP key and the display will show the previous alarm, with time and date. Continue to
press the UP key to view all alarms. Once the last listed alarm is viewed, press the ENTER key to
view run time (press the Esc key at any time to return to the Main Menu).
The screen will display the following:
Run Hours 1
Blower
Comp1:
Comp 2:
Comp 3:
Comp 4:
Reset$
00000
00000
00000
00000
00000
No
No
No
No
No
▼ Press the ENTER key to move the cursor. The cursor will flash the reset choice of No or Yes. To reset and clear runtimes, press the UP or DOWN key.
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▼ Press the ENTER key until the cursor is flashing on the title line. Press the DOWN key to move
to next screen.
The screen will display the following:
Run Hours 2
Htr 1:
Htr 2:
Htr 3:
Humidity:
Dehum::
Reset$
00000
00000
00000
00000
00000
No
No
No
No
No
▼ Press the ENTER key to move the cursor. The cursor will flash the reset choice of No or Yes. To reset and clear runtimes, press the UP or DOWN key.
▼ Press the ENTER key until the cursor is flashing on the title line. Press the DOWN key to move
to next screen.
The screen will display the following:
Run Hours 3
Engy Svr:
CW Cool:
Cond Aux::
Reset$
00000
00000
00000
No
No
No
Reset All Runtimes: No (or Yes)
With the cursor flashing on the title line, press the UP or Down key to review the alarms or runtimes or press the MENU key to return to the Main Menu.
▼ Press the Esc key to return to the normal operating screen.
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MENU F – INFORMATION
MENU F allows viewing of the processor version (Service Level password is required for entry).
This is a view only menu.
Once password has been entered scroll until Menu F – Information is highlighted. Press the
ENTER key to view. There two screens. The first screen will display the following:
Information
Data Aire Inc.
Code:
Ver:
1.0B01 05/04/11
Manual code:
4.30 12/22/08
Boot:
4.03 07/03/06
▼ Press the UP or DOWN key to view second screen. The second screen will display the
following:
Information
pCO Type: pCO5 Large
Total Flash
2048KB
RAM
512KB
Built-In Type
T Memory Write
0
Main Cycle/s
4.2 cycles/s
238ms
▼ Press the MENU key to return to the main menu or press Esc to return to the normal operating
mode.
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MENU G – NETWORK CONFIG
MENU G allows selection of BMS protocol. (Service Level password is required for entry)
Once password has been entered, press the UP or DOWN key until “G. Network Config” appears
and is highlighted. Press the ENTER key.
The following will be displayed (values are for reference only):
Bms Configuration
BMS Port 1
Protocol:
MODBUS
Only the protocol can be changed. The selections are as follows:
LON, BACNET, PCOLOAD, MODBUS, MODEM, CAREL, N/A
Once the selection has been made, press the ENTER key and the cursor will move to the title
block.
To move to the next screen, press the DOWN key. The following will be displayed (values are for reference only):
Bms Configuration
BMS Port 1
Address
Baud Rate
1
19200
The address can be a value from 0 to 999
The available baud rates are: 1200, 2400, 4800, 9600, 19200
Once the selection has been made, press the ENTER key to move the cursor to the title block.
▼ Press the Esc key to return to the Main Menu. Scroll to the next menu to be viewed is highlighted or press the Esc again to return to the normal operating mode.
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MENU H - CALIBRATE SENSORS
MENU H allows calibration of the unit installed sensors. (Service Level password is required for
entry).
Return air temperature and humidity sensors are standard with Data Aire units. Dependent on
options and equipment type, a discharge air and chilled water sensor may be installed in the unit.
Press the UP or DOWN key until “H. Calibrate Sensors” appears and is highlighted. Press the
ENTER key.
The following will be displayed on display module (values are for reference only):
Analog Input
Humidity Sensor
Input B01
Offset
Value
xx.x
xx.x
▼ Press the ENTER key to move the cursor. The cursor will flash at the Offset. By pressing the
UP (to increase) or DOWN (to decrease) keys the Offset can be changed.
Once the change has been made, press the ENTER key and the cursor will move to the title block
of the screen. The Offset change is now entered and stored.
To move to the next screen, press the DOWN key. The following will be displayed (values are for reference only):
Analog Input
Return Air Temp Sensor
Input B04
Offset
Value
xx.x
xx.x
▼ Press the ENTER key to move the cursor. The cursor will flash at the Offset. By pressing the
UP (to increase) or DOWN (to decrease) keys the Offset can be changed.
Once the change has been made, press the ENTER key and the cursor will move to the upper
portion of the screen. The Offset change is now entered and stored.
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The following will be displayed (values are for reference only):
Analog Input
Discharge Air Sensor
Input B09
Offset
Value
xx.x
xx.x
▼ Press the ENTER key to move the cursor. The cursor will flash at the Offset. By pressing the
UP (to increase) or DOWN (to decrease) keys the Offset can be changed.
Once the change has been made, press the ENTER key and the cursor will move to the upper
portion of the screen. The Offset change is now entered and stored.
To move to the next screen, press the DOWN key. The following will be displayed (values are for reference only):
Analog Input
Chilled Water Sensor
Input B10
Offset
Value
xx.x
xx.x
▼ Press the ENTER key to move the cursor. The cursor will flash at the Offset. By pressing the
UP (to increase) or DOWN (to decrease) keys the Offset can be changed.
Once the change has been made, press the ENTER key and the cursor will move to the upper
portion of the screen. The Offset change is now entered and stored.
▼ Press the Up or DOWN key to move to another screen or if all calibrations are completed, with
the cursor flashing in the title box, press the Esc key. This will take you to the Main Menu.
Use the UP or DOWN keys to scroll through the Menus or press the Esc key to return to the normal operating mode screen.
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MENU I – MANUAL CONTROL
MENU I allows manually running different unit components (Service Level password is required for
entry).
In the Main Menu screen press the UP or DOWN key until “I. Manual Control” appears and is highlighted. Press the ENTER key.
The following will be displayed (values are for reference only):
Manual Output Mgmt: 1
Return to Auto:
60s
Blower
Auto On
Compressor 1
Auto Off
Compressor 2
Auto Off
Compressor 3
Auto Off
Compressor 4
Auto Off
Note: The “Return to Auto:” is programmable from 10 to 300 seconds. Once the time has
elapsed the functions will return to normal programmed operation.
Move the cursor to the title block by pressing the ENTER key. To return to the Main Menu press
the Esc key or to view the following screen press the DOWN key.
The following will be displayed (values are for reference only):
Manual Output Mgmt: 2
Humidifier
Auto On
Status Relay
Auto On
Cond Aux Rly
Auto Off
Reheat 1
Auto Off
Reheat 2
Auto Off
Reheat 3
Auto Off
Move the cursor to the title block by pressing the ENTER key. To return to the Main Menu press
the Esc key or to view the following screen press the DOWN key.
The following will be displayed (values are for reference only):
Manual Output Mgmt: 3
Energy Saver
Auto Off
Alarm 1
Auto Off
Alarm 2
Auto Off
Alarm 3
Auto Off
Alarm 4
Auto Off
Drain
Auto Off
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Move the cursor to the title block by pressing the ENTER key. To return to the Main Menu press
the Esc key or to view the following screen press the DOWN key.
The following will be displayed (values are for reference only):
Analog Output 3
Fan Speed
Mode: Auto
Manual Valve
0.00vdc
Output
8.50vdc
Move the cursor to the title block by pressing the ENTER key. To return to the Main Menu press
the Esc key or to view the following screen press the DOWN key.
The following will be displayed (values are for reference only):
Analog Output 4
Optional # 1
Mode: Auto
Manual Valve
0.00vdc
Output
0.00vdc
Move the cursor to the title block by pressing the ENTER key. To return to the Main Menu press
the Esc key or to view the following screen press the DOWN key.
The following will be displayed (values are for reference only):
Analog Output 5
Optional # 1
Mode: Auto
Manual Valve
0.00vdc
Output
0.00vdc
Move the cursor to the title block by pressing the ENTER key. To return to the Main Menu or
press the Esc key.
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MENU J – FACTORY SETTINGS (factory use only)
IMPORTANT NOTE: MENU J is for setting the control to the type equipment and options ordered.
This requires the Factory Level password and entry should be limited to Data Aire factory
and service personnel. Consult with factory before making any changes to these factory settings.
Failure to do this may lead to equiipment malfunctions.
In the main menu screen press the UP or DOWN key until “J. Factory Settings” appears and is
highlighted. Press the ENTER key.
System Settings
Model: DA gForce
Screen Flip Delay:
3s
Start-up Delay:
5s
Temp Units: Fahrenheit
Out Status: Sys On
Fan Type: Plug Fan
Fan Mode: Continuous
The following will be displayed:
The inputs are for reference only (see below for available settings).
Model:
Screen Flip Delay:
Start-up Delay:
Temp Units:
Out Status: Fan Type:
Fan Mode:
There are four choices – gForce, Mini, Mini-Plus and DA Series
The range is 0 to 99 seconds (in 1 second intervals)
The range is 5 to 600 seconds (in 1 second intervals)
Fahrenheit or Centigrade
There are five choices – Sys On, Dehum On, Hum On, Comps On, and
Reheat On
There are two settings – Plug Fan, Std On/Off
There are two choices - Continuous and Automatic
Once inputs have been made, move the cursor (by pressing the ENTER Key) to the title box. Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only/see below for available settings):
Fan Settings
CW Mode: Const Speed
CW Speed:
85%
Disch Temp Is Required
DX Mode: Constant
DX Speed:
100%
Modulate Min:
40%
Modulate Max:
60%
Fan Settings (Plug Fan Only – Fan Type in first screen must be set for PLUG FAN)
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CW Mode:
There are nine (9) modes: Const. Speed, BMS Speed, Vlv. Pos. Speed, Air Pressure, Const. Flow, BMS Flow, Vlv. Pos. Flow, Mod to R. Air, and Mod to Rack
CW Speed:
The range is 60 to 100%
Disch Temp Is Required
DX Mode:
There are six (6) modes: Const. Speed, BMS Speed, Air Pressure, Const. Flow,
BMS Flow, and Mod to Rack
DX Speed:
The range is 60 to 100%
Modulate Min: The range is 40 to 100%
Modulate Max: The range is 70 to 100% If choosing CONSTANT, the following will be displayed and a value can entered:
CW Speed: 60% - 100%
If choosing BMS, no additional messages will be displayed
If choosing VALVE POS, the following will be displayed and a values can be entered:
Modulate Min: 40% - 100%
Modulate Max: 70% - 100%
If choosing AIR PRESSURE, the following will be displayed and values can be entered:
Modulate Min: 40% - 100%
Modulate Max: 70% - 100%
With DX, if choosing PRESSURE, the following will be displayed and values can be entered:
Air Pressure Setpoint: 0.01 – 0.99” Wtr
Band: 0.01 – 0.99” Wtr
Int Time: 0 – 999s
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Fan Pressure
Set Point:
Band:
Int Time:
0.50” Wtr
.05” Wtr
50s
Available Selections:
Set Point:
Band:
Int Time:
0.00” to 0.99”
.01” to .99”
0 – 999
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key or press the Esc key to return to normal operating mode
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Fan Air Flow
Fans Installed:
▼ Press the DOWN key to view the next screen:
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (inputs are for reference only)
Compressor Settings
Type: Dual Pri w/ UnLdr
Control: Return Temp
Electronic Valve: Dual
HP Lockout: None
Delay btw Stages:
60s
Available Selections:
Type: Sngl Primary (single scroll compressor),
Dual Primary (dual scroll compressor),
Sngl Pri w/UnLdr (single semi-hermetic compressor w/unloading),
Dual Pri w/UnLdr (dual semi-hermetic compressors w/unloading),
Four Tandem (dual tandem scroll compressors),
None (entry for chilled water units)
Lead/Lag: Enabled or Disabled (if Disabled is selected, Lead: and Rotate Lead: are not displayed)
Rotate Lead:
setting 168 hrs)
Range is from 12 to 999 hours (of runtime to rotate compressor lead – factory
Delay Btw Stages: Range is from 30 to 300 seconds (delay between start of lag compressor)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
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EEV – Electronic Expansion Valve
When unit has electronic expansion valve the following screen will be displayed (values are for
reference only):
Setpoints
Temp Setpoint:
Temp Deadband
72°F
2°F
Stage-to-stage:
0.3°F
Superheat:
6.0°F
Compressor Settings
Type:
Dual Primary
Control:
Return Temp
Electronic Valve:
Dual
HP Lockout:
None
Delay btw stages:
60s
NOTE: This screen only appears when the “Electronic Valve” is selected as “One” or “Two” in
Menu J - Factory Setting - Compressor Settings screen.
Super Heat: Suction Temp:
Suction Pres:
The current value of refrigerant super heat
The current value of refrigerant suction temperature
The current value of refrigerant suction pressure
Move the cursor to the title block by pressing the ENTER key stepping through all the inputs.
To return to the main Menu press the Esc key or to view the following screen press the DOWN
key.
Super Heat setpoint can be changed on Menu B - Setpoint. Recommend to consult with factory
before changing this setting.
HP Lock-out Logic:
Optional High pressure lock-out setting on Menu J - Factory Settings in compressor settings
screen is selected to Max 2/Hr (two resets per Hour) or 3/Hr (3 resets per Hour), the compressor
control signals will be terminated after 2 or 3 times of HP reset. It is requires to press and hold
silence button while HP alarm message shows on LCD to reset the circuit. Optional auto reset
high pressure cut-out is recommended to use in this logic. Default setting is “None” with standard
manual reset switch.
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Press the DOWN key to view the next screen:
The following will be displayed (inputs are for reference only):
Reheat Settings
Reheat Stages:
Lead Reheat:
3-Elect
First
Enable SCR Y4:
Band:
Yes
1°F
Available Selections:
One, two, three, 1-Elect, 3-Elect, or none
If two or three are selected, the display module will display “Lead Reheat:”
By pressing the UP or DOWN key the lead choices (First, Second or Third) can be seen.
Reheat Settings
Reheat Stages: Three
Lead Reheat:
With two stage reheat, pick either First or Second (factory setting is First)
With three stage reheat, pick either First, Second or Third (factory setting is First)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (inputs are for reference only):
Water Valve Settings
Wtr Vlv: Engy Svg Cool
E-Saver Assist: None
Wtr Vlv Voltage: 0-10
Wtr Vlv Action: Direct
Engy Lockout Time: 15m
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Available Selections:
Wtr Vlv (Water Valve):
Engy Svg Cool
Chilled Wtr Reg
None
Chilled Wtr Cool
Aux Chill Wtr
Note: If None is selected, Wtr Vlv Voltage, Wtr Vlv Action and Engy Lockout Time will appear on
the display module screen.
E-Saver Assist:
None
1 Comp*
2 Comp*
4 Comp*
* If E-Saver Assist is selected with 1, 2 or 4 compressors, the display module will display “Disch
Temp Is Required”. An optional discharge temperature sensor is required. If left at none, there
will be no message.
Note: E-Saver Assist will only appear if either Engy Svg Cool or Aux Chill Wtr are selected.
Wtr Vlv Voltage:
0 – 10 (factory setting)
4 – 7
6 – 9
7 – 10
2 – 10
Wtr Vlv Action:
Direct (factory setting) or Reverse
Engy Lockout Time: 15m (factory setting), 30m, 45m, and 60m
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
Press the DOWN key to view the next screen:
The following will be displayed (inputs are for reference only):
Disch Air PID
Simple Settings:
Cntrol: PID
Band
Interaction Time:
Derivation Time:
Output Period
Available Selections:
Simple Setting:
0 – 300 (factory setting is 25)
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25
5.8oF
234
23s
0ms
Control:
PID
P+1
P
Notes:
If selecting PID, the Band, Integration Time, Derivative Time and Output Period will appear on the
screen and values can be entered.
If selecting P + 1, the Band, Integration Time and Output Period will appear on the screen and
values can be entered.
If selecting P, the Band and Output Period will appear on the screen and values can be entered.
Band:
The range is 1 to 35°F
Integration Time:
The range is 0 to 999 seconds
Derivative Time:
The range is 0 to 999 seconds
Output Period:
The range is 0 to 9999 ms (milliseconds)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key or press the Esc key to return normal operating mode
Press the DOWN key to view the next screen:
The following will be displayed (inputs are for reference only):
Humidity Settings
Control:
Dew Point
Humidify:
Compu Non-Mod
Auto-Flush:
24Hrs
Dsat Cyc:
Not Used
Hum Anticipation:
Off
Dehum Mode:
1C In Limit
Available Selections:
Humidify:
Compu Non-Mod (Computer Room, Non-Modulating)
Computer Mod (Computer Room, Modulating)
Comf Non-Mod (Comfort, Non-Modulating) Consult with factory
Comf Mod (Comfort, Modulating) Consult with factory
None
Auto-Flush:
Not Used or 12, 24, 48 or 96 Hrs (only available on units with infrared humidifier)
Dsat Cyc:
Not Used or 1, 2, 3, 4 or 5 M Off (Minutes)
Hum Anticipation:
On or Off
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Dehum Mode:
None
1C In Limit (1 compressor & within reheat limits)
2C In Limit (2 compressors & within reheat limits)
1C No Limit (1 compressor & no reheat limits)
2C No Limit (2 compressors & no reheat limits)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key or press the Esc key to return normal operating mode
Press the DOWN key to view the next screen:
The following will be displayed (input is for reference only):
Initialization
DEFAULT INSTALLATION
Erase user settings
and stall global
default values:
NO
Available Selections: Yes or No
Note: Selecting YES will reset all values back to the factory settings (default).
If YES is selected, the following message will be displayed: “wait resetting” (resetting will take a
Warning
INITIALIZATION DONE
switch-off unit
to confirm data
few seconds). Once set the display will have the following message:
Power down the unit using the unit mounted electrical disconnect or the (field provided)
wall mounted disconnect.
Once the self-test is complete, the display module will display that the unit is “OFFbyKEY”
Start (power-up) the unit following the instructions on page 10, Powering the Unit ON/OFF.
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MENU K – ALARMS and LIMITS
MENU K is for setting the control alarms and limits. (Service Level password required and entry
should be limited to service personnel starting or servicing the equipment).
In the Main Menu screen press the UP or DOWN key until “K. Alarms & Limits” appears and is
highlighted. Press the ENTER key.
The following will be displayed (inputs are for reference only):
Alarm Settings
Audio Mode:
Pwr-Up:
None
Auto, No Alarm
Maint Due Msg:
None
Available Selections:
Audio Mode:
None
Full On
Long Beep
Short Beep
Pwr-Up:
Auto, No Alarm
Auto, With Alarm
Man, Clr Alarm
Maint Due Msg:
None
The range is 0 to 1000 hours
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Alarm Settings
Comp Short Cycle:
Yes
Floor Water Alarm
Action:
Alarm Only
Reset Alarm Log:
No
Alarm Screen Contact:
No Contact Message
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Available Selections:
Comp Short Cycle:
Yes or No
Water Alarm Action:
Alarm Only
Shutdown Unit
Lockout Comps
Reset Alarm Log:
Yes or No
Alarm Screen Contact: No Contact Message
Service Company
Maint Engineer
Data Proc Mngr
Custom Message (factory installed)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Flow Alarm
No Water Flow Action:
Alarm Only
Wtr Flow Alm Dly:
Air Flow Alm Dly:
5s
5s
Available Selections:
No Water Flow Action: Alarm Only
Turn Compressors Off
Wtr Flow Alm Dly:
The range is 5 to 180 seconds
Air Flow Alm Dly:
The range is 5 to 180 seconds
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
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▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Return Air Alarms
Firestat Setpoint:
100oF
Hi Temp Alarm:
Yes
Set Point:
80oF
Lo Temp Alarm:
Yes
Set Point:
60oF
Available Selections:
Firestat Setpoint:
The range is 100 to 150°F (factory setting is 150°F)
Hi Temp Alarm:
Yes or No (factory setting is Yes)
Set Point:
The range is 70 to 90°F (factory setting is 80°F)
Lo Temp Alarm:
Yes or No (factory setting is Yes)
Set Point:
The range is 55 to 75°F (factory setting is 60°F)
Note: If No is selected for the Hi or Lo Temp Alarm, the Set Point will not be displayed.
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Discharge Alarm
Lo Disch T Alarm:
No
Available Selections:
Lo Disch T Alarm:
Yes or No
If Yes is selected, the following will be displayed (value is for reference only):
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Discharge Alarm
Lo Disch T Alarm:
Set Point:
Yes
52oF
The Set Point range is 45 to 60°F (factory setting is 52°F)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Humidity Alarms
Hi Humidity Alarm:
Set Point:
Yes
60%
Lo Humidity Alarm:
Set Point:
Yes
40%
Available Selections:
Hi Humidity Alarm: Yes or No (factory setting is Yes)
Set Point:
The range is 35 to 90% RH (factory setting is 60% RH)
Lo Humidity Alarm: Yes or No (factory setting is Yes)
Set Point:
The range is 10 to 65% RH (factory setting is 40% RH)
Note: If No is selected for the Hi or Lo Humidity Alarm, the Set Point will not be displayed.
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
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Alarm Inputs
Custom Alarm Messages
Alarm #1 (DI-13)
SEE TAG INSIDE DOOR
Alarm #2 (DI-14)
SEE TAG INSIDE DOOR
Available Selections:
Alarm #1:
SEE TAG INSIDE DOOR
Custom Message
FAN MOTOR OVERLOAD
CHK HUMIDIFIER CYL
STANDBY PUMP ON
UPS ON-CHK MAIN POWER
UNIT IN STBY
REHEAT & HUM INHIBIT
HUMIDIFIER INHIBITED
REHEAT INHIBITED
Alarm #2:
SEE TAG INSIDE DOOR
Custom Message
FAN MOTOR OVERLOAD
CHK HUMIDIFIER CYL
STANDBY PUMP ON
UPS ON-CHK MAIN POWER
UNIT IN STBY
REHEAT & HUM INHIBIT
HUMIDIFIER INHIBITED
REHEAT INHIBITED
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Alarm Inputs
Custom Alarm Messages
Alarm #3 (DI-15)
SEE TAG INSIDE DOOR
Alarm #4 (DI-16)
SEE TAG INSIDE DOOR
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Available Selections:
Alarm #3:
SEE TAG INSIDE DOOR
Custom Message
FAN MOTOR OVERLOAD
CHK HUMIDIFIER CYL
STANDBY PUMP ON
UPS ON-CHK MAIN POWER
UNIT IN STBY
REHEAT & HUM INHIBIT
HUMIDIFIER INHIBITED
REHEAT INHIBITED
Alarm #4:
SEE TAG INSIDE DOOR
Custom Message
FAN MOTOR OVERLOAD
CHK HUMIDIFIER CYL
STANDBY PUMP ON
UPS ON-CHK MAIN POWER
UNIT IN STBY
REHEAT & HUM INHIBIT
HUMIDIFIER INHIBITED
REHEAT INHIBITED
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Alarm Output Function 1 - See sample screen shot at end of section
CW Sensor
DA Sensor
Fan Ovld
Smoke
Cond Wtr
Firestat
Alarm 1
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 2
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 3
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 4
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
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Alarm Output Function 2 - See sample screen shot at end of section
C1 Hi Pr
C1 Low Pr
C2 Hi Pr
C2 Low Pr
Short Cycl
Maint Tmr
Alarm 1
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 2
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 3
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 4
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Alarm Output Function 3 - See sample screen shot at end of section
Hi Humid
Low Humid
Humidifier
DA Low T
RA Low T
RA Hi Temp
Alarm 1
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 2
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 3
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 4
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Alarm Output Function 4 - See sample screen shot at end of section
Override
Air Flow
Wtr Flow
Power Up
Floor Wtr
Hum Inhbt
Alarm 1
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 2
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 3
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 4
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
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▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Alarm Output Function 5 - See sample screen shot at end of section
Alarm 1
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 2
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 3
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Alarm 4
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Yes or No
Heat Inhbt
Filter
Alm SW 1
Alm SW 2
Alm SW 3
Alm SW 4
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Alarm Output Function 6 - See sample screen shot at end of section
Manl Ovrd
Alarm 1
Yes or No
Alarm 2
Yes or No
Sample of screen shots for Alarm Output Function 1-6.
Alarm Output Function
#1
#2
#3
y
N
N
N
Y
N
N
N
Y
N
N
N
Y
N
N
N
Y
N
Heat Inhbt
Filter
Alm SW1
Alm SW2
Alm SW3
Alm SW4
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#4
N
N
N
Y
N
N
Alarm 3
Yes or No
Alarm 4
Yes or No
MENU L - Configure I/O (factory use only)
Menu L is a factory for configuring the unit’s digital inputs and the unit’s analog inputs and outputs. This requires the Factory Level password and entry should be limited to Data Aire factory
and service personnel.
▼ Press the UP or DOWN key until “L. Configure I/O” appears and is highlighted. Press the
ENTER key.
The following will be displayed (values are for reference only):
Digital Input
C1 LOW PRESSURE SW
ChannelID2
Action:
Delay:
Status:
Open
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
C1 HI PRESSURE SW
ChannelID1
Action:
Delay:
Status:
Open
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
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The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
C2 LOW PRESSURE SW
ChannelID4
Action:
Delay:
Status:
Open
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
C2 HI PRESSURE SW
ChannelID3
Action:
Delay:
Status:
Open
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
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Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
AIR FLOW SWITCH
ChannelID5
Action:
Delay:
Status:
Closed
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
WATER FLOW SWITCH
ChannelID6
Action:
Delay:
Status:
Closed
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
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Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
SMOKE DETECTOR SW
ChannelID7
Action:
Delay:
Status:
Closed
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
DIRTY FILTER SWITCH SW
ChannelID8
Action:
Delay:
Status:
Closed
5s
Closed
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
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Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
HUMIDIFIER FAULT SW
ChannelID9
Action:
Delay:
Status:
Closed
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
ENERGY SAVER SWITCH
ChannelID10
Action:
Delay:
Status:
Closed
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
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▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
HI CONDENSATE SW
ChannelID11
Action:
Delay:
Status:
Closed
5s
Closed
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
FAN OVERLOAD
ChannelID12
Action:
Delay:
Status:
Closed
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
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The following will be displayed (values are for reference only):
Digital Input
OPT ALARM #1 SWITCH
ChannelID13
Action:
Delay:
Status:
Closed
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
OPT ALARM #2 SWITCH
ChannelID14
Action:
Delay:
Status:
Closed
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
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The following will be displayed (values are for reference only):
Digital Input
OPT ALARM #3 SWITCH
ChannelID15
Action:
Delay:
Status:
Closed
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
OPT ALARM #4 SWITCH
ChannelID16
Action:
Delay:
Status:
Closed
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
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The following will be displayed (values are for reference only):
Digital Input
FLOOR WATER SWITCH
ChannelID17
Action:
Delay:
Status:
Closed
5s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Digital Input
MANUAL OVERRIDE
ChannelID18
Action:
Delay:
Status:
Closed
0s
Open
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – Open or Closed
Delay – the range is 0 – 999 seconds
Status – Open or Closed (Status can’t be changed.)
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
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The following will be displayed (values are for reference only):
Analog Input
Humidity Sensor
Enable:
ON Channel: B1
Normal
4-20mA
Minimum:
0.0
Maximum:
100.00
Offset:
0.0
Value:
35.6
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Enable – ON or OFF
Note: If (Enable) OFF is selected the Normal, Minimum, Maximum, Offset and Value will not be
displayed.
With Enable ON, Normal, Minimum, Maximum, Offset and Value will be displayed and values
changed.
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Analog Input
Air Temp Sensor
Enable:
ON Channel: B
High Res.
NTC
Offset:
Value:
0.0
74.1
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Enable – ON or OFF
Note: If (Enable) OFF is selected the High Res, Offset and Value will not be displayed.
With Enable ON, High Res., Offset and Value will be displayed and values changed.
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
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▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Analog Input
Static Air Pressure
Enable:
Off Channel: B7
Note: If (Enable) OFF is selected the Normal, Minimum, Maximum, Offset and Value will not be
displayed.
With Enable ON, Normal, Minimum, Maximum, Offset and Value will be displayed and values
changed.
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Analog Input
Discharge Air Sensor
Enable:
On Channel: B9
High Rex.
NTC
Offset:
Value:
0.0
74.1
Note: If (Enable) OFF is selected the High Res, Offset and Value will not be displayed.
With Enable ON, High Res., Offset and Value will be displayed and values changed.
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
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The following will be displayed (values are for reference only):
Analog Input
Chilled Water Sensor
Enable:
On Channel: B10
High Res.
NTC
Offset:
Value:
0.0
74.1
Note: If (Enable) OFF is selected the High Res, Offset and Value will not be displayed.
With Enable ON, High Res., Offset and Value will be displayed and values changed.
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
With Enable OFF
Optional Sensor #1
Enable: OFF
Choose Name
Optional Sensor #1
Enable: OFF
Choose Name
Normal
NTC
Offset
Value
With Enable ON
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0.0oF
-2.1oF
The “Choose Name” allows one of the following to be selected by moving the cursor to the
Choose Name and pressing the UP or DOWN key:
Diff Pressure
Zone Air Temp
CW Sply Temp
Neutral Amps
Input Amps A
Input V. A-B
Suct Pressure
CW Flow
Cond Ret Temp
Output Amps C
Output V. B-C
Disch Pressure
Cond Wtr Flow
Cond Sup Temp
Output Amps B
Output V. A-C
Outside Hum
Ret Air Temp
Power
Output Amps A
Output V. A-B
Outside Temp
Sply Air Temp
Frequency
Input Amps C
Input V. B-C
Zone Humidity
CW Ret Temp
Ground Amps
Input Amps B
Input V. A-C
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Optional Sensor #2
Enable: OFF
Choose Name
With Enable OFF
Optional Sensor #2
Enable: ON
Choose Name
Normal
NTC
Offset
Value:
0.0oF
-2.1oF
With Enable ON
The “Choose Name” allows one of the following to be selected by moving the cursor to the
Choose Name and pressing the UP or DOWN key:
Diff Pressure
Zone Air Temp
CW Sply Temp
Neutral Amps
Input Amps A
Input V. A-B
Suct Pressure
CW Flow
Cond Ret Temp
Output Amps C
Output V. B-C
Disch Pressure
Cond Wtr Flow
Cond Sup Temp
Output Amps B
Output V. A-C
Outside Hum
Ret Air Temp
Power
Output Amps A
Output V. A-B
Outside Temp
Sply Air Temp
Frequency
Input Amps C
Input V. B-C
Zone Humidity
CW Ret Temp
Ground Amps
Input Amps B
Input V. A-C
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
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▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Optional Sensor #3
Enable: OFF
Choose Name
With Enable OFF
Optional Sensor #3
Enable: OFF
Choose Name
Normal
NTC
Offset:
Value:
0.0oF
-2.1oF
With Enable ON
The “Choose Name” allows one of the following to be selected by moving the cursor to the
Choose Name and pressing the UP or DOWN key:
Diff Pressure
Zone Air Temp
CW Sply Temp
Neutral Amps
Input Amps A
Input V. A-B
Suct Pressure
CW Flow
Cond Ret Temp
Output Amps C
Output V. B-C
Disch Pressure
Cond Wtr Flow
Cond Sup Temp
Output Amps B
Output V. A-C
Outside Hum
Ret Air Temp
Power
Output Amps A
Output V. A-B
Outside Temp
Sply Air Temp
Frequency
Input Amps C
Input V. B-C
Zone Humidity
CW Ret Temp
Ground Amps
Input Amps B
Input V. A-C
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Optional Sensor #4
Enable: OFF
Choose Name
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Optional Sensor #4
Enable: OFF
Choose Name
Normal
NTC
Offset
Value:
0.0oF
-2.1oF
With Enable OFF
With Enable ON
The “Choose Name” allows one of the following to be selected by moving the cursor to the
Choose Name and pressing the UP or DOWN key:
Diff Pressure
Zone Air Temp
CW Sply Temp
Neutral Amps
Input Amps A
Input V. A-B
Suct Pressure
CW Flow
Cond Ret Temp
Output Amps C
Output V. B-C
Disch Pressure
Cond Wtr Flow
Cond Sup Temp
Output Amps B
Output V. A-C
Outside Hum
Ret Air Temp
Power
Output Amps A
Output V. A-B
Outside Temp
Sply Air Temp
Frequency
Input Amps C
Input V. B-C
Zone Humidity
CW Ret Temp
Ground Amps
Input Amps B
Input V. A-C
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Analog Output Config
Channel:
Action:
Minimum
Maximum:
Y6
DIRECT
0.0vdc
0.0vdc
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – there are six (6) selections (Y1, Y2, Y3, Y4, Y5 and Y6). There are five Analog
outputs available. DO NOT ASSIGN THE SAME CHANNEL ON MORE THAN ONE ANALOG OUTPUT.
Action: there are two choices; DIRECT AND REVERSE
Minimum: the range is from 0.0vdc to 10.0vdc
Maximum: the range is from 0.0vdc to 10.0vdc
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Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Analog Output Config
Channel:
Action:
Minimum
Maximum:
Y5
DIRECT
0.0vdc
0.0vdc
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – there are six (6) selections (Y1, Y2, Y3, Y4, Y5 and Y6). There are five Analog
outputs available. DO NOT ASSIGN THE SAME CHANNEL ON MORE THAN ONE ANA
LOG OUTPUT.
Action: there are two choices; DIRECT AND REVERSE
Minimum: the range is from 0.0vdc to 10.0vdc
Maximum: the range is from 0.0vdc to 10.0vdc
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Analog Output Config
Channel:
Action:
Minimum
Maximum:
Y2
DIRECT
0.0vdc
0.0vdc
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
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The following can be changed by pressing the DOWN key:
Channel – there are six (6) selections (Y1, Y2, Y3, Y4, Y5 and Y6). There are five Analog
outputs available. DO NOT ASSIGN THE SAME CHANNEL ON MORE THAN ONE ANALOG OUTPUT.
Action: there are two choices; DIRECT AND REVERSE
Minimum: the range is from 0.0vdc to 10.0vdc
Maximum: the range is from 0.0vdc to 10.0vdc
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
The following will be displayed (values are for reference only):
Analog Output Config
Channel:
Action:
Minimum
Maximum:
Y1
DIRECT
0.0vdc
0.0vdc
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – there are six (6) selections (Y1, Y2, Y3, Y4, Y5 and Y6). There are five Analog
outputs available. DO NOT ASSIGN THE SAME CHANNEL ON MORE THAN ONE ANALOG OUTPUT.
Action: there are two choices; DIRECT AND REVERSE
Minimum: the range is from 0.0vdc to 10.0vdc
Maximum: the range is from 0.0vdc to 10.0vdc
Once a selection or selections have been made, move the cursor to the title block by pressing the
ENTER key
▼ Press the DOWN key to view the next screen:
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The following will be displayed (values are for reference only):
Analog Output Config
Channel:
Action:
Minimum
Maximum:
Y3
DIRECT
0.0vdc
0.0vdc
Move the cursor by pressing the ENTER key. Move the cursor to change the setting.
The following can be changed by pressing the DOWN key:
Channel – there are six (6) selections (Y1, Y2, Y3, Y4, Y5 and Y6). There are five Analog
outputs available. DO NOT ASSIGN THE SAME CHANNEL ON MORE THAN ONE ANALOG OUTPUT.
Action: there are two choices; DIRECT AND REVERSE
Minimum: the range is from 0.0vdc to 10.0vdc
Maximum: the range is from 0.0vdc to 10.0vdc
To return to another Input or Output screen, with the cursor in the title block, press the UP or
DOWN key to scroll through the selections
To exit Menu L – Configure I/O, with the cursor in the title block, press the Menu key. The screen
will display the Menus.
▼ Press the Esc key to return to the normal operating mode.
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dap4 CONTROL LOGIC
SYSTEM START DELAY
After the self-test is complete, the Timed Start Delay will be displayed and will start counting down
from the programmed delay time. The factory setting is five (5) seconds. The setting is programmed in Menu A – ON/OFF. The range is from 1 to 600 seconds in 5 second increments.
BLOWER
Plug Fans – Units with plug fans have a “soft-start”. Upon completion of the Timed Start Delay, on
multiple fan units, the first fan will start. After five (5) seconds the second fan will start. The third
and fourth fans (as applicable) will follow the same delay sequence.
Centrifugal Fans – The blower(s) will start upon completion of the Timed Start Delay and is programmed and wired to run continuously during unit operation.
FUNCTIONS
Cooling, reheat, humidification and dehumidification functions are inhibited for one (1) minute after
the blower(s) start. This allows the temperature and humidity sensors to adjust.
COMPRESSOR COOLING
1. There is a five (5) minute delay between start-to-start of the same primary stage compressor. The delay will be increased to six (6) minutes for one (1) hour following the detection of a
compressor short-cycle condition even if the compressor short cycle alarm is disabled (Menu K
- Alarms and Limits).
2. There is a two (2) minute delay between stop-to-start of the same primary stage compressor.
3. There is a one (1) minute delay between stop-to-start of the same secondary unloader stage
compressor or stop-to-start of a second secondary unloader stage compressor.
4. Compressor staging sequence at each adjustment period:
UNITS WITH STANDARD (DUAL) SCROLL COMPRESSORS
Compressor “ON” sequence (Increasing Temperature)
Cool 1 ON at Temperature Setpoint + Temperature Deadband
Cool 2 ON at Temperature Setpoint + Temperature Deadband + y°F
Compressor “OFF” sequence (Decreasing Temperature)
Cool 2 OFF at Temperature Setpoint + y°F
Cool 1 OFF at Temperature Setpoint
UNITS WITH OPTIONAL TANDEM SCROLL OR SEMI-HERMETIC COMPRESSORS
Compressor “ON” sequence (Increasing Temperature)
Cool 1 ON at Temperature Setpoint + Temperature Deadband
Cool 2 ON at Temperature Setpoint + Temperature Deadband + y°F
Cool 3 ON at Temperature Setpoint + Temperature Deadband + 2y°F
Cool 4 ON at Temperature Setpoint + Temperature Deadband + 3y°F
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Compressor “OFF” sequence (Decreasing Temperature)
Cool 4 OFF at Temperature Setpoint + 3y°F
Cool 3 OFF at Temperature Setpoint + 2y°F
Cool 2 OFF at Temperature Setpoint + y°F
Cool 1 OFF at Temperature Setpoint
Note: y = “stage to stage” which can be changed in MenuB-Setpoints; default value is 0.3
5. If the temperature drops below the setpoint during an adjustment period, all compressors turn
OFF at once.
CHILLED WATER COOLING
Chilled water valve “opening” sequence (Increasing Temperature)
1. The chilled water valve proportionally opens 10% for each 0.1°F above the temperature set
point plus temperature deadband.
2. The chilled water valve responds to a change of the return air temperature after each adjustment period.
If the current temperature is higher than the temperature at the last adjustment period, the following sequence will determine the new valve position:
Current Temperature = Setpoint + Deadband + 0.0°F =
Current Temperature = Setpoint + Deadband + 0.1°F =
Current Temperature = Setpoint + Deadband + 0.2°F =
Current Temperature = Setpoint + Deadband + 0.3°F =
Current Temperature = Setpoint + Deadband + 0.4°F =
Current Temperature = Setpoint + Deadband + 0.5°F =
Current Temperature = Setpoint + Deadband + 0.6°F =
Current Temperature = Setpoint + Deadband + 0.7°F =
Current Temperature = Setpoint + Deadband + 0.8°F =
Current Temperature = Setpoint + Deadband + 0.9°F =
Current Temperature = Setpoint + Deadband + 1.0°F =
0% Position Open
10% Position Open
20% Position Open
30% Position Open
40% Position Open
50% Position Open
60% Position Open
70% Position Open
80% Position Open
90% Position Open
100% Position Open
Chilled water valve “closing” sequence (Decreasing Temperature)
1. The chilled water valve proportionally closes 10% for each 0.1°F below the temperature set
point plus 1.0°F.
2. The chilled water valve responds to a change of the return air temperature after each adjustment period.
3. If the current temperature is lower than the temperature at the last adjustment period, the following sequence will determine the new valve position:
Current Temperature = Setpoint + 1.0°F = 100% Position Open
Current Temperature = Setpoint + 0.9°F = 90% Position Open
Current Temperature = Setpoint + 0.8°F = 80% Position Open
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Current Temperature = Setpoint + 0.7°F =
Current Temperature = Setpoint + 0.6°F =
Current Temperature = Setpoint + 0.5°F =
Current Temperature = Setpoint + 0.4°F =
Current Temperature = Setpoint + 0.3°F =
Current Temperature = Setpoint + 0.2°F =
Current Temperature = Setpoint + 0.1°F =
Current Temperature = Setpoint + 0.0°F =
70% Position Open
60% Position Open
50% Position Open
40% Position Open
30% Position Open
20% Position Open
10% Position Open
0% Position Open
4. If the temperature is consistently rising, the valve will open accordingly at each adjustment period. Likewise, if the temperature is consistently falling, the valve will close accordingly at each
adjustment period. However, if the temperature changes directions, the temperature must
change the amount of the deadband before the valve will be repositioned. The temperature
can slowly drift back and forth within a deadband window at any point in the adjustment period
without a valve position change.
ENERGY SAVER and AUXILIARY CHILLED WATER COOLING
1. Energy Saver/Auxiliary Chilled Water Cooling will be available whenever the incoming water (or
water/glycol) supply is below the Energy Saver/Chilled Water temperature setpoint (Menu B –
Setpoint).
2. The Energy Saver/Auxiliary Chilled Water Cooling mode will operate only in a two (2) degree
range. The range is between the return air setpoint plus deadband and two (2) degrees. If the
temperature rises above this range, the Energy Saver/Auxiliary Chilled Water Cooling will be
inhibited for the amount of time set in Menu J, “Energy Saver Lockout Time” and DX (Direct
Expansion) cooling will take over. After the amount of time set in Menu J – Factory Settings,
“Energy Saver Lockout Time”, it will try Energy Saver/Auxiliary Chilled Water Cooling again.
3. The chilled water valve proportionally opens 10% for each 0.1°F above the temperature set
point plus temperature deadband.
4. The chilled water valve responds to a change of the return air temperature after each adjustment period.
5. If the temperature is consistently rising, the valve will be opened more at each adjustment period. Likewise, if the temperature is consistently falling, the valve will be closed more at each
adjustment period. However, if the temperature movement changes directions, then it must
change the amount of the deadband before the valve will be repositioned. The temperature
can be slowly drifting back and forth within a deadband window at any point in the adjustment
period and no valve changes will be made.
6. If the current temperature is higher than at the last adjustment period, the following sequence
is used to determine the new valve position:
Current Temperature = Setpoint + Deadband + 0.0°F =
Current Temperature = Setpoint + Deadband + 0.1°F =
Current Temperature = Setpoint + Deadband + 0.2°F =
Current Temperature = Setpoint + Deadband + 0.3°F =
Current Temperature = Setpoint + Deadband + 0.4°F =
Current Temperature = Setpoint + Deadband + 0.5°F =
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0% Position Open
10% Position Open
20% Position Open
30% Position Open
40% Position Open
50% Position Open
Current Temperature = Setpoint + Deadband + 0.6°F = 60% Position Open
Current Temperature = Setpoint + Deadband + 0.7°F = 70% Position Open
Current Temperature = Setpoint + Deadband + 0.8°F = 80% Position Open
Current Temperature = Setpoint + Deadband + 0.9°F = 90% Position Open
Current Temperature = Setpoint + Deadband + 1.0°F = 100% Position Open
7. The chilled water valve proportionally closes 10% for each 0.1°F below the temperature set
point plus 1°F.
8. If the current temperature is lower than at the last adjustment period, the following sequence is
used to determine the new valve position:
Current Temperature = Setpoint + 1.0°F = 100% Position Open
Current Temperature = Setpoint + 0.9°F = 90% Position Open
Current Temperature = Setpoint + 0.8°F = 80% Position Open
Current Temperature = Setpoint + 0.7°F = 70% Position Open
Current Temperature = Setpoint + 0.6°F = 60% Position Open
Current Temperature = Setpoint + 0.5°F = 50% Position Open
Current Temperature = Setpoint + 0.4°F = 40% Position Open
Current Temperature = Setpoint + 0.3°F = 30% Position Open
Current Temperature = Setpoint + 0.2°F = 20% Position Open
Current Temperature = Setpoint + 0.1°F = 10% Position Open
Current Temperature = Setpoint + 0.0°F = 0% Position Open
9. The dap4 will switch the unit to DX cooling for one (1) hour after every 100 hours of continuous
hours of Energy Saver or Auxiliary Chilled Water Cooling.
ENERGY SAVER and AUXILIARY CHILLED WATER COOLING ASSIST
1. Energy Saver/Auxiliary Chilled Water Cooling can operate simultaneously with compressor
cooling. An optional discharge temperature sensor is required.
2. The Energy Saver/Auxiliary Chilled Water Cooling will be the same and the compressor rules
for short-cycle time will not be violated.
3. The following is the compressor staging sequence at each adjustment period.
UNITS WITH STANDARD (DUAL) SCROLL COMPRESSORS
Cool 1 ON at Temperature Setpoint + Temperature Deadband + 1.3°F and Valve 100% Open
Cool 2 ON at Temperature Setpoint + Temperature Deadband + 1.6°F and Valve 100% Open
Cool 2 OFF at Temperature Setpoint + 1.6°F and Valve 100% Open
Cool 1 OFF at Temperature Setpoint + 1.3°F and Valve 100% Open until next adjustment period
UNITS WITH OPTIONAL TANDEM SCROLL or SEMI-HERMETIC (W/UNLOADING) COMPRESSORS
Cool 1 ON at Temperature Setpoint + Temperature Deadband + 1.3°F and Valve 100% Open
Cool 2 ON at Temperature Setpoint + Temperature Deadband + 1.6°F and Valve 100% Open
Cool 3 ON at Temperature Setpoint + Temperature Deadband + 1.9°F and Valve 100% Open
Cool 4 ON at Temperature Setpoint + Temperature Deadband + 2.2°F and Valve 100% Open
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Cool 4 OFF at Temperature Setpoint + 2.2°F and Valve 100% Open
Cool 3 OFF at Temperature Setpoint + 1.9°F and Valve 100% Open
Cool 2 OFF at Temperature Setpoint + 1.6°F and Valve 100% Open
Cool 1 OFF at Temperature Setpoint + 1.3°F and Valve 100% Open until next adjustment period
REHEAT
1. There is a one (1) minute delay between the stop of any reheat stage to the start of any reheat
stage.
2. There is a one (1) minute delay from the start-to-start of different reheat stages. Reheat stages
rotate every 100 hours of runtime.
3. The reheat staging at each adjustment period is as follows:
Reheat 1 ON at Temperature Setpoint – Temperature Deadband
Reheat 2 ON at Temperature Setpoint – Temperature Deadband – y°F
Reheat 3 ON at Temperature Setpoint – Temperature Deadband – 2y°F
Reheat 3 OFF at Temperature Setpoint – 2y°F
Reheat 2 OFF at Temperature Setpoint – y°F
Reheat 1 OFF at Temperature Setpoint
Note: y = “stage to stage” which can be changed in MenuB-Setpoints; default value is 0.3
4. The above reheat staging is for the standard 3 stage electric reheat. Other types of reheat are
available (hot water and hot gas). They are single stage. Single stage operates in the following manner:
Reheat is ON at Temperature Setpoint – Temperature Deadband
Reheat is OFF at Temperature Setpoint
5. Reheat will be overridden by humidification when the humidifier setting is programmed for
Computer, Non-Modulating or Computer, Modulating (See Menu J – Factory Settings).
ELECTRIC REHEAT LOGIC
Menu J - Factory Settings: Reheat Settings
1 ELECTRIC (for single stage electric reheat)
This setting will be default on Mini-dap4 panel and optional in dap4 panel.
When panel is programmed to “1 ELECTRIC” the reheat only allows coming on during the
dehumidification cooling cycle. When reheat comes on, it will try to satisfy the unit temperature setpoint. If the humidity setpoint satisfies and the dehumidification cooling stops, the
reheat will be disable as well.
3 ELECTRIC (For three stages electric reheat)
This setting will be optional in dap4 panel.
When panel is programmed to “3 ELECTRIC” the reheat stages only allow coming on during
the dehumidification cooling cycle. When reheat will stage on bases on temperature setpoint
and try to satisfy the temperature setpoint. While reheat is demanded, if the humidity
setpoint is satisfied and the dehumidification cooling stops, the reheat stages will be disable
as well.
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SCR REHEAT SETTING
1. If unit is built with an optional SCR reheat, Menu F- Factory Settings - Reheat setting - Enable
Reheat SCR Y4 is set to YES, dap4 will send a 0-10VDC modulating signal to control a SCR
reheat controller.
2. SCR Reheat Proportional Band range is 1- 20°F with 1°F default value.
3. SCR reheat can be overridden by humidification.
4. When space temperature is lower than temperature setpoint, dap4 will send a 0-10 VDC signal
to SCR reheat as follow:
When temperature drops, Y4 output signal is:
0VDC when R/A temp = Temp SP- Temp DB
1VDC when R/A temp = Temp SP- Temp DB - 0.1 SCR Pro. band
2VDC when R/A temp = Temp SP- Temp DB - 0.2*SCR Pro. band
3VDC when R/A temp = Temp SP- Temp DB - 0.3*SCR Pro. band
4VDC when R/A temp = Temp SP- Temp DB - 0.4*SCR Pro. band
5VDC when R/A temp = Temp SP- Temp DB - 0.5*SCR Pro. band
6VDC when R/A temp = Temp SP- Temp DB - 0.6*SCR Pro. band
7VDC when R/A temp = Temp SP- Temp DB - 0.7* SCR Pro. band
8VDC when R/A temp = Temp SP- Temp DB - 0.8*SCR Pro. band
9VDC when R/A temp = Temp SP- Temp DB - 0.9*SCR Pro. band
10VDC when R/A temp = Temp SP- Temp DB - SCR Pro. band
When temperature rises, Y4 output signal:
0VDC when R/A temp = Temp SP
1VDC when R/A temp = Temp SP - 0.1 SCR Pro. band
2VDC when R/A temp = Temp SP - 0.2*SCR Pro. band
3VDC when R/A temp = Temp SP - 0.3*SCR Pro. band
4VDC when R/A temp = Temp SP - 0.4*SCR Pro. band
5VDC when R/A temp = Temp SP - 0.5*SCR Pro. band
6VDC when R/A temp = Temp SP - 0.6*SCR Pro. band
7VDC when R/A temp = Temp SP - 0.7* SCR Pro. band
8VDC when R/A temp = Temp SP - 0.8*SCR Pro. band
9VDC when R/A temp = Temp SP - 0.9*SCR Pro. band
10VDC when R/A temp = Temp SP - SCR Pro. band
HUMIDIFICATION
1. Humidification will inhibit the reheat if programmed (See Menu J Factory Settings) for Humidifier: Computer Non-Modulating or Humidifier: Computer Modulating. Reheat is allowed during
humidification if programmed for Humidifier Comfort, Non-Modulating or Humidifier Comfort,
Modulating.
2. There is a one (1) minute delay between the stop-to-start of humidification.
3. There is a five (5) minute delay between the dehumidification and start of humidification.
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4. The humidification staging sequence of each adjustment period for ON/OFF of non-modulating
humidifiers is as follows:
Humidifier is ON at Humidity Setpoint – Humidity Deadband
Humidifier is OFF at Humidity Setpoint – 1.0% 5. The humidification staging sequence for a modulating humidifier is as follows:
Valve is OPENED at Humidity Setpoint – 1.0%
Valve is CLOSED at Humidity Setpoint – 0.5%
6. When the humidifier valve is opened, its position will follow a linear ramp that goes from 25%
open with the humidity at setpoint minus 0.5% to 100% open at setpoint minus humidity deadband.
DEHUMIDIFICATION
1. Dehumidification Mode can be programmed with one or two compressors for dehumidification
and with or without reheat limits (See Menu J – Factory Settings).
2. If dehumidification is programmed for “Within Reheat Limits” dehumidification cooling will be
inhibited if the return air temperature drops to temperature setpoint minus temperature deadband minus 2°F. Dehumidification will be inhibited until the return air temperature rises to the
temperature setpoint. Compressor short-cycle time will not be violated.
3. If dehumidification is programmed for “No Reheat Limits” it will remain ON until the humidity
setpoint is reached. In this mode dehumidification has priority and overcooling is disregarded. The reheat sequence will remain the same.
4. If dehumidification is programmed for two (2) compressors, with or without reheat limits, only
one (1) compressor will be allowed if reheat is required.
5. There is a one (1) minute delay between stop-to-start of dehumidification. Compressor shortcycle time delay will not be violated.
6. There is a five (5) minute delay between dehumidification and humidification.
7. The compressor staging sequence for dehumidification at each adjustment period is as follows:
UNITS WITH STANDARD (DUAL) SCROLL COMPRESSORS
Cool 1 ON at Humidity Setpoint + Humidity Deadband
Cool 2 ON at Humidity Setpoint + Humidity Deadband + 1%
Cool 2 OFF at Humidity Setpoint + 1%
Cool 1 OFF at Humidity Setpoint
UNITS WITH OPTIONAL TANDEM SCROLL or SEMI-HERMETIC (W/UNLOADING) COMPRESSORS
Cool 1 ON at Humidity Setpoint + Humidity Deadband
Cool 2 ON at Humidity Setpoint + Humidity Deadband + 1%
Cool 3 ON at Humidity Setpoint + Humidity Deadband + 2%
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Cool 4 ON at Humidity Setpoint + Humidity Deadband + 3%
Cool 4 OFF at Humidity Setpoint + 3%
Cool 3 OFF at Humidity Setpoint + 2%
Cool 2 OFF at Humidity Setpoint + 1%
Cool 1 OFF at Humidity Setpoint
8. The sequence for dehumidification with Energy Saver or Auxiliary Chilled Water Cooling is as
follows:
Valve is OPENED to 100% at Humidity Setpoint + Humidity Deadband
Valve is CLOSED at Humidity Setpoint
DEHUMIDIFICATION FOR CHILLED WATER UNITS
1. All the standard dehumidification rules for dehumidification with compressors applies to chilled
water units.
2. The chilled water valve responds to a change of the return air relative humidity (RH) after each
adjustment period. When a change is made to the setpoint, the chilled water valve will delay its
response for five (5) minutes after which it will respond after each adjustment period.
3. The dehumidification sequence for chilled water units is as follows:
Valve is OPENED to 100% at Humidity Setpoint + Humidity Deadband
Valve is CLOSED at Humidity Setpoint
DEWPOINT LOGIC
Relevant Menu Settings and Display
1. There will be additional menus required to program for Dewpoint control in dap4 and Mini-dap4:
Menu B - Setpoints
- High Dewpoint setpoint (Range 50 to 65) - default 59°F
- High Dewpoint Deadband (Range 1.0 to 3.0) - default 1°F
- Low Dewpoint setpoint (Range 40 to 55) – default 45°F
- Low Dewpoint Deadband (Range 1.0 to 3.0) - default 1°F
The high and low dewpoint setpoint cannot overlap.
Menu J - Factory Settings – Humidity settings menu
- Control: Rel. Hum or Dewpoint
2. Display will show dewpoint when this mode is selected.
DX Dehumidification
In DX mode, 2-cooling stages on as follows:
Cooling 1 on when dewpoint = High Dewpoint Setpoint - 0.2°F OR Humidity Setpoint - 1%
Cooling 2 on when dewpoint = High Dewpoint Setpoint - 0.0°F OR Humidity Setpoint - 0%
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In DX mode, 2-cooling stages off as follows:
Cooling 2 off when dewpoint = High Dewpoint Setpoint - High Dewpoint DB - 0.0°F AND
Humidity Setpoint - Humidity Deadband - 0%
Cooling 1 off when dewpoint = High Dewpoint Setpoint - High Dewpoint DB - 0.2°F AND
Humidity Setpoint - Humidity Deadband - 1%
In DX mode, 4-cooling stages on as follows:
Cooling 1 on when dewpoint = High Dewpoint Setpoint- 0.6°F OR Humidity Setpoint - 3%
Cooling 2 on when dewpoint = High Dewpoint Setpoint - 0.4°F OR Humidity Setpoint - 2%
Cooling 3 on when dewpoint = High Dewpoint Setpoint - 0.2°F OR Humidity Setpoint - 1%
Cooling 4 on when dewpoint = High Dewpoint Setpoint - 0.0°F OR Humidity Setpoint - 0%
In DX mode, 4-cooling stages off as follows:
Cooling 4 off when dewpoint = High Dewpoint Setpoint - High Dewpoint DB - 0.0°F AND
Humidity Setpoint - Humidity Deadband - 0%
Cooling 3 off when dewpoint = High Dewpoint Setpoint - High Dewpoint DB - 0.2°F AND
Humidity Setpoint - Humidity Deadband - 1%
Cooling 2 off when dewpoint = High Dewpoint Setpoint - High Dewpoint DB - 0.4°F AND
Humidity Setpoint - Humidity Deadband - 2%
Cooling 1 off when dewpoint = High Dewpoint Setpoint - High Dewpoint DB - 0.6°F AND
Humidity Setpoint - Humidity Deadband - 3%
Chilled Water Dehumidification
Chilled Water valve opening
Chilled Water valve will open if dewpoint is increasing OR relative humidity is increasing closer
to the setpoints. Either high dewpoint or high relative humidity can cause the CW to open and
call for dehumidification. The modulation of the CW valve will be based on whichever has
higher demand for CW valve to open. For example, if dewpoint requires the CW valve to open
20% and humidity requires the CW valve to open 50%, as a result, CW valve will open 50%.
Individual logic for CW valve opening based on dewpoint and humidity is as followes:
CW valve modulation based on dewpoint
Dehumidification mode will start if return dewpoint rises to high_dewpoint_setpoint – 1.0°F;
after that, CW valve will:
Open 10% if return dewpoint = high_dewpoint_setpoint – 0.9°F
Open 20% if return dewpoint = high_dewpoint_setpoint – 0.8°F
Open 30% if return dewpoint = high_dewpoint_setpoint – 0.7°F
Open 40% if return dewpoint = high_dewpoint_setpoint – 0.6°F
Open 50% if return dewpoint = high_dewpoint_setpoint – 0.5°F
Open 60% if return dewpoint = high_dewpoint_setpoint – 0.4°F
Open 70% if return dewpoint = high_dewpoint_setpoint – 0.3°F
Open 80% if return dewpoint = high_dewpoint_setpoint – 0.2°F
Open 90% if return dewpoint = high_dewpoint_setpoint – 0.1°F
Open 100% if return dewpoint = high_dewpoint_setpoint
CW valve modulation based on humidity
Dehumidification mode will start if return_relative_humidity rises to humidity_setpoint –
1.0%; after that, CW valve will:
Open 10% if return_relative_humidity = humidity_setpoint – 0.9%
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Open 20% if return_relative_humidity = humidity_setpoint – 0.8%
Open 30% if return_relative_humidity = humidity_setpoint – 0.7%
Open 40% if return_relative_humidity = humidity_setpoint – 0.6%
Open 50% if return_relative_humidity = humidity_setpoint – 0.5%
Open 60% if return_relative_humidity = humidity_setpoint – 0.4%
Open 70% if return_relative_humidity = humidity_setpoint – 0.3%
Open 80% if return_relative_humidity = humidity_setpoint – 0.2%
Open 90% if return_relative_humidity = humidity_setpoint – 0.1%
Open 100% if return_relative_humidity = humidity_setpoint
Chilled Water valve closing
While still in dehumidification mode, Chilled Water valve will start to close if dewpoint is decreasing OR relative humidity is decreasing closer to the setpoints minus deadband. The
modulation of the CW valve will be based on whichever has HIGHER demand for CW valve to
open. For example, if dewpoint requires the CW valve to open 20% and humidity requires the
CW valve to open 50%, as a result, CW valve will open 50%. Individual logic for CW valve
closing based on dewpoint and humidity is as followed:
CW valve modulation based on dewpoint
Start to close if return dewpoint drops to high_dewpoint_setpoint – high_dewpoint_deadband;
after that, the CW valve will:
Open 90% if return dewpoint = high_dewpoint_setpoint – high_dewpoint_deadband – 0.1°F
Open 80% if return dewpoint = high_dewpoint_setpoint – high_dewpoint_deadband – 0.2°F
Open 70% if return dewpoint = high_dewpoint_setpoint – high_dewpoint_deadband – 0.3°F
Open 60% if return dewpoint = high_dewpoint_setpoint – high_dewpoint_deadband – 0.4°F
Open 50% if return dewpoint = high_dewpoint_setpoint – high_dewpoint_deadband – 0.5°F
Open 40% if return dewpoint = high_dewpoint_setpoint – high_dewpoint_deadband – 0.6°F
Open 30% if return dewpoint = high_dewpoint_setpoint – high_dewpoint_deadband – 0.7°F
Open 20% if return dewpoint = high_dewpoint_setpoint – high_dewpoint_deadband – 0.8°F
Open 10% if return dewpoint = high_dewpoint_setpoint – high_dewpoint_deadband – 0.9°F
Closed if return dewpoint = high_dewpoint_setpoint – high_dewpoint_deadband -1.0°F
CW valve modulation based on humidity
Starts to close if return_relative_humidity drops to humidity_setpoint – humidity_deadband;
after that, the CW valve will:
Open 90% if return_relative_humidity = humidity_setpoint – humidity_deadband – 0.1%
Open 80% if return_relative_humidity = humidity_setpoint – humidity_deadband – 0.2%
Open 70% if return_relative_humidity = humidity_setpoint – humidity_deadband – 0.3%
Open 60% if return_relative_humidity = humidity_setpoint – humidity_deadband – 0.4%
Open 50% if return_relative_humidity = humidity_setpoint – humidity_deadband – 0.5%
Open 40% if return_relative_humidity = humidity_setpoint – humidity_deadband – 0.6%
Open 30% if return_relative_humidity = humidity_setpoint – humidity_deadband – 0.7%
Open 20% if return_relative_humidity = humidity_setpoint – humidity_deadband – 0.8%
Open 10% if return_relative_humidity = humidity_setpoint – humidity_deadband – 0.9%
Closed if return_relative_humidity = humidity_setpoint – humidity_deadband– 1.0%
Humidifier Operation
Humidifier will turn on when dewpoint is below Low Dewpoint Setpoint
Humidifier will turn off when dewpoint is above Low Dewpoint Setpoint + Low Dewpoint Deadband
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If Low dewpoint setpoint is set too high, the humidifier might run pass the relative humidity setpoint. When this happens, the humidifier will be inhibited and a warning will display on dap4 LCD
screen.
Variable Speed Compressor Control Logic and EEV Safeties
and Alarms
System with Variable Speed Compressor
Data Aire gForce Ultra DX series unit can be equipped with a variable speed compressor or a
combination of a variable speed compressor and a fixed speed scroll compressor. In these types
of unit, Dap4 controller will modulate the VFD of the variable speed compressor using a 0-10VDC
signal to maintain either return air temperature setpoint or supply (discharge) air temperature setpoint.
Dap4 Software configuration
i)
There will be two additional compressor type selections added to compressor type:
Var. Sp (single variable speed compressor) and Var. Sp + Fixed Sp (a variable
speed plus a fixed speed compressor)
ii)
Control mode: Return /Supply. Return is default setting. When control mode is set to
Return, compressors will be controlled by the return air temperature sensor. When
Supply is selected, compressor will be controlled by the discharge air temperature
sensor.
iii)
An adjustable Minimum runtime for variable speed compressor with a range of 2- 10
minutes is added the Factory Setting menu, default value is 2 minutes.
iv)
There will be no compressors rotation when unit has a variable speed compressor. Variable speed compressor is always the lead compressor.
1.
Return Air Temperature Control Mode
a)
Single DX circuit- one variable speed compressor system
-Compressor settings type in dap4 Factory Settings menu is programmed to “Single
Variable” and Control mode is set to “Return Temp”.
-There is a five (5) minute delay between start-to-start of the compressor. The
delay will be increased to six (6) minutes for one (1) hour following the detection of
a short-cycle condition even if the short cycle alarm is disabled using a short cycle
alarm menu.
-There is a two (2) minute delay between stop-to-start.
-Once variable speed compressor C1 comes on, it must remain on for a minimum runtime even setpoint satisfies.
-If variable speed compressor C1 runs at the minimum speed for a period of time,
it will automatically ramp up to the maximum speed for one minute to maintain the
minimum compressor oil level. The temperature may drop slightly during this
override period.
-Compressor C1 cycles on and modulate as follows to maintain setpoint:
Return air temperature is rising (On cycle):
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When return air temperature = Temperature setpoint + temperature deadband
variable speed compressor starts and ramp up to maximum speed. For instance:
SP = 72, DB = 2. Compressor will be on at 74°.
Variable speed compressor will then use PI (Proportional and Intergral) control
algorithm to main the setpoint. Proportional band is the same as deadband. The Intergral band is programmed in Factory settings menu. In most cases there is no
need to change the P and I value as the result of temperature control fluctuation.
Return air temperature is dropping (Off cycle):
-
-
b)
As the return air temperature reaches setpoint, the compressor will ramp down to its minimum speed. (Note: If variable speed compressor runs at the minimum
speed for a long period of time, it will automatically ramp up to the maximum speed
for one minute to maintain the minimum compressor oil level. The temperature may
drop slightly during this override period).
Compressor continues to run at minimum speed then turns off when return air
temperature drops to temperature setpoint – C1 offset. C1 offset is programmed in Compressor/Factory settings menu, default value is 2°F. For instance: SP= 72,
C1 offset = 2, compressor goes off at 70°.
Dual DX circuit : Combination of a variable speed compressor (C1) and a fixed speed
compressor (C2)
--
Compressor settings type in dap4 Factory Settings menu is programmed to
“Variable+ fixed” and Control mode is set to “Return Temp”.
-There is a five (5) minute delay between start-to-start of the same primary stage.
The delay will be increased to six (6) minutes for one (1) hour following the detection
of a short-cycle condition even if the short cycle alarm is disabled using a short cycle
alarm menu.
-There is a two (2) minute delay between stop-to-start of the same compressor.
-There is minimum two (2) minutes delay between the start of variable speed
compressor and start of fixed speed compressor.
-Once variable speed compressor C1 comes on, it must remain on for a minimum runtime even setpoint satisfies. -Compressor cycles on and modulate as follows:
Return air temperature is rising (On cycle):
-
-
-
When return air temperature rises to temperature setpoint + temperature deadband,
Variable speed compressor C1will start and ramp up to its maximum speed.
For instance: SP = 72, DB = 2. Compressor will be on at 74°.
Variable speed compressor will then use PI (Proportional and Integral) control
algorithm to main the setpoint. Proportional band is the same as deadband.
The Integral band is programmed in Factory settings menu. In most cases there is
no need to change these P and I settings.
Fixed speed compressor C2 cycles on when return air temperature rises to
temperature setpoint + temperature DB + stage-to-stage Band and compressor C1
has operated at above 95% of its maximum speed for the “C2 on delay” period. C2
on period is programmed in Compressor/Factory settings menu (default=60s).
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For instance: SP = 72, DB = 2, STS = 0.3. Compressor will be on at 74.3 deg.
Return air temperature is dropping (Off cycle):
-
--
Fixed speed compressor C2 turns off when return air temperature drops below
temperature setpoint – STS band (default STS band=0.3 deg F) for duration of C2
off delay (default =5s). For instance: SP = 72, STS = 0.3 Compressor goes off at 71.7 degrees after 5 seconds delay.
After Fixed speed compressor C2 turns off, variable speed compressor C1 ramps
up to its maximum speed and operates at maximum speed for a “Delay Modulation”
period (default=60s). The Delay modulation is set in the Compressor/Factory
settings menu.
-Variable speed compressor C1 will then modulate to maintain setpoint and turns off when return air temperature drops to temperature setpoint – C1offset (default=2degF); and C1 has operated for at least minimum runtime period.
For instance: SP= 72, C1 offset = 2, compressor goes off at 70 deg if it has ran for
6 minutes (minimum runtime is set to 6 minutes).
c)
Energy saver/ auxiliary cooling without DX cooling assist.
1.
Energy Saver/Auxiliary Chilled Water Cooling will be available whenever the
incoming water supply is below the setpoint of the Energy saver Water Thermostat
in menu B-setpoint – Energy Saver
2.
The Energy Saver/Auxiliary Chilled Water mode will operate when space
temperature is between the return air setpoint plus deadband and plus Energy saver to DX change-over band. If the temperature rises above this range, Energy
Saver/ Auxiliary Chilled Water Cooling will be inhibited for at least 15 minute to an
hour (see Energy saver Lockout setting in Factory settings menu for details) and only DX cooling will be available. After a lockout time delay, system will try Energy
Saver/Auxiliary Chilled Water Cooling again.
3.
The chilled water valve proportionally opens 10% for each 0.1ºF above the
temperature setpoint + temperature deadband.
4.
If the temperature is consistently rising, then the valve will be opened wider.
Likewise, if the temperature is consistently falling, then the valve will be close
gradually. However, if temperature movement changes directions, then it must change the amount of the deadband before the valve will be repositioned.
The temperature can be slowly drifting back and forth within a deadband window
at any point in the adjustment period and no valve position changes will be made.
5.
If the current temperature is higher than temperature setpoint, the following
sequence is used to determine the new valve position.
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Current Temperature = Setpoint + Deadband + 0.0ºF = 0% Position
Current Temperature = Setpoint + Deadband + 0.1ºF = 10% Position
Current Temperature = Setpoint + Deadband + 0.2ºF = 20% Position
Current Temperature = Setpoint + Deadband + 0.3ºF = 30% Position
Current Temperature = Setpoint + Deadband + 0.4ºF = 40% Position
Current Temperature = Setpoint + Deadband + 0.5F = 50% Position
Current Temperature = Setpoint + Deadband + 0.6ºF = 60% Position
Current Temperature = Setpoint + Deadband + 0.7ºF = 70% Position
Current Temperature = Setpoint + Deadband + 0.8ºF = 80% Position
Current Temperature = Setpoint + Deadband + 0.9ºF = 90% Position
Current Temperature = Setpoint + Deadband + 1.0ºF = 100% Position
6.
The chilled water valve proportionally closes 10% for each 0.1ºF below the
temperature setpoint + 1.0ºF.
7.
If the current temperature is lower than at the last adjustment period, the following
sequence is used to determine the new valve position.
Current Temperature = Setpoint + 1.0ºF = 100% Position
Current Temperature = Setpoint + 0.9ºF = 90% Position
Current Temperature = Setpoint + 0.8ºF = 80% Position
Current Temperature = Setpoint + 0.7ºF = 70% Position
Current Temperature = Setpoint + 0.6ºF = 60% Position
Current Temperature = Setpoint + 0.5ºF = 50% Position
Current Temperature = Setpoint + 0.4ºF = 40% Position
Current Temperature = Setpoint + 0.3ºF = 30% Position
Current Temperature = Setpoint + 0.2ºF = 20% Position
Current Temperature = Setpoint + 0.1ºF = 10% Position
Current Temperature = Setpoint
=
0% Position
8.
When unit switches to DX mode because chilled water temperature is higher than
Energy saver chilled water setpoint or because of the temperature is higher than
setpoint plus deadband plus the energy saver change- over band, dap4 will use the
DX cooling logic above to maintain the return air temperature setpoint. All DX
safeties are applied.
9.
If Chilled water temperature drops below Energy saver setpoint or return air
temperature drops below setpoint plus deadband then system will switch back to Energy saver cooling after the energy saver lock out time delay.
d)
Energy saver/ Auxiliary cooling with DX cooling assist.
1.
Energy Saver/Auxiliary Chilled Water Cooling can operate simultaneously with
compressor cooling if Energy saver assist mode is set to 1 Comp or 2 Comp and the
optional Discharge Air Sensor is required.
2.
If Energy saver chilled water is available (inlet water temperature is below energy
saver water thermostat set in menu B-setpoint), the chilled water will be used as a
primary cooling, and DX will be a supplemental cooling.
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3.
The Energy Saver/Auxiliary Chilled Water Cooling logic will be the same and
compressor rules for short-cycle time will not be violated.
4.
Low discharge temperature alarm limit must be set in menu K-Alarms & Limits.
If Discharge temperature drops below this limit, compressors will be inhibited for at
least 15 minutes and discharge temperature rises above this limit.
5.
If discharge temperature drops below the limit while the variable speed compressor
finishing its minimum runtime the CW should close until discharge temperature rises
above the limit.
6.
-
-
-
When DX cooling requires, the compressors will stage on as follows:
Compressors on cycle
Variable speed compressor C1 comes on at Temperature Setpoint + Temperature
Deadband + 1+ STS DB. For instance: SP=72, DB=2 and STS=0.3, the C1
compressor will on at 75.3°.
Once variable speed compressor comes on it will ramp up its speed maximum
speed for delay modulation then uses PI logic to maintain setpoint +1°F.
Fixed speed compressor C2 comes on at Temperature Setpoint + Temperature
Deadband + 2ºF + STS DB and variable speed compressor has run at 95% speed
for a C2on delay. This step only applies to dual compressor system.
For instance: SP=72, DB=2 and STS=0.3, the C2 compressor will on at 76.3°.
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-
--
--
Compressors off cycle
Fixed speed compressor C2 cycles off at Temperature Setpoint + 2ºF, variable speed
compressor C1 continues to run at 100%. For instance: SP=72, the C2 compressor
goes off at 74 degrees.
Variable speed compressor C1 starts to ramp down to minimum speed when return
temperature reaches setpoint + 1°F.
Variable speed compressor cycles off at Temperature Setpoint.
CW Valve will close 10% for every 0.1 Deg F below the setpoint plus 1°F and
completely close at setpoint.
Compressor will not violate its minimum runtime.
* This applies on dual compressor system.
2.
Discharge Air Temperature Control Mode
a)
Single DX circuit - One variable speed compressor system
-Compressor settings type in dap4 Factory Settings menu is programmed to “Var. Sp”
and Control mode is set to “Supply”.
-There is a five (5) minute delay between start-to-start of the compressor. The delay
will be increased to six (6) minutes for one (1) hour following the detection of a
short-cycle condition even if the short cycle alarm is disabled using a short cycle alarm menu.
-There is a two (2) minute delay between stop-to-start of the compressor.
-Once compressor C1 comes on, it must remain on for a minimum runtime even
setpoint satisfies. 79 • dap4 User Manual
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--
If variable speed compressor C1 runs at the minimum speed for a period of time, it will automatically ramp up to the maximum speed for one minute to maintain
the minimum compressor oil level. The temperature may drop slightly during this override period.
-Compressor cycles on and modulate as follows:
Discharge air temperature is rising (On cycle):
-When discharge air temperature rises to temperature setpoint + temperature DB (deadband), variable speed compressor C1 will start and operate at its minimum speed.
-Dap4 will then use PID (proportional-Integral- derivative) control logic to modulate
the variable speed compressor C1 to maintain temperature setpoint. PID values are
programmed in Factory settings menu.
Discharge air temperature is dropping (Off cycle):
-
-b)
Compressor C1 turns off when discharge air temperature drops to temperature
setpoint – C1 offset. C1 offset is programmed in Compressor /Factory settings menu.
Compressor C1 can only turn off if minimum runtime has expired.
Dual DX circuit : Combination of a variable speed compressor (C1) and a fixed speed
compressor (C2) system
--
Compressor settings type in dap4 Factory Settings menu is programmed to “Vari+Fixed ” and Control mode is set to “Supply”.
-There is a five (5) minute delay between start-to-start of the same primary stage.
The delay will be increased to six (6) minutes for one (1) hour following the detection
of a short-cycle condition even if the short cycle alarm is disabled using a short cycle
alarm menu.
-There is a two (2) minute delay between stop-to-start of the same compressor.
-There is minimum two (2) minutes delay between the start of variable speed
compressor and start of fixed speed compressor.
-Once variable speed compressor C1 comes on, it must remain on for a minimum runtime even setpoint satisfies. -Compressor cycles on and modulate as follows:
Discharge air temperature is rising (On cycle):
-
-
-
When discharge air temperature rises to temperature setpoint + 0.5 temperature deadband (SP+1/2 DB), variable speed compressor C1will start.
Dap4 will then use PID (proportional- Integral- derivative) logic to control the
compressor C1 speed to maintain temperature setpoint.
Fixed speed compressor C2 will come on when discharge air temperature rises
to temperature setpoint + temperature deadband (SP+DB) and compressor C1 has
operated at above 95% of its maximum speed for at least C2 on delay. C2 on delay
is programmed in Compressor/Factory settings menu.
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Once fixed compressor C2 started, the variable speed compressor C1 will
operate at minimum speed for duration of Delay Modulation. Delay modulation is programmed in Compressor/factory settings menu.
Discharge air temperature is dropping (Off cycle):
-
-
c)
Fixed speed compressor C2 turns off when discharge air temperature drops to the
temperature setpoint – C2 offset.
Variable speed compressor C1 turns off when discharge air temperature drops to
temperature setpoint – C1 offset.
Energy saver/ auxiliary cooling without DX cooling assist in discharge temperature control.
1.
Energy Saver/Auxiliary Chilled Water Cooling will be available whenever the
incoming water supply is below the setpoint of the Energy saver Water Thermostat
in menu B-setpoint – Energy Saver.
2.
If system switches to DX cooling and chilled water temperature drops below the energy saver setpoint, the system will switch back to chilled water cooling after an
energy saver lock-out time delay.
3.
The Energy Saver/Auxiliary Chilled Water mode will operate when discharge
temperature is between the discharge air setpoint plus temperature deadband plus
Energy saver to DX change-over band. If the temperature rises above this range,
Energy Saver/Auxiliary Chilled Water Cooling will be inhibited for at least 15 minutes
to an hour it depends on Energy saver Lockout delay setting in Factory settings menu, and only DX cooling will be available during this period. After a lockout time delay, system will try Energy Saver/Auxiliary Chilled Water Cooling again.
Reheat should not be used in this mode.
4.
When unit switches to DX mode it will use the DX cooling logic in item a and b above
to maintain the discharge temperature setpoint. All DX safeties are applied.
5.
Dap4 uses a preset PID loop to control CW valve to maintain discharge air
temperature setpoint if energy saver chilled water is available and discharge air
temperature is below setpoint plus Energy saver to DX change-over band.
d)
Energy saver/ auxiliary cooling with DX cooling assist in discharge temperature control.
1.
Energy Saver/Auxiliary Chilled Water Cooling can operate simultaneously with
compressor cooling if Energy saver assist mode is set to 1 Comp or 2 Comp.
2.
If Energy saver chilled water is available (inlet water temperature is below energy
saver water thermostat set in menu B-setpoint), the chilled water will be used as a
primary cooling, and DX will be a supplemental cooling.
81 • dap4 User Manual
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3.
The Energy Saver/Auxiliary Chilled Water Cooling logic will be the same as the
chilled water cooling logic of the discharge air temperature control, this means dap4
uses a preset PID loop to control the CW valve to maintain a discharge air
temperature setpoint.
4.
5.
Low discharge temperature alarm limit must be set in menu K-Alarms & Limits. If Discharge temperature drops below this limit, compressors will be inhibited for at least 15 minutes and discharge temperature rises above this limit.
If discharge temperature drops below the limit while the variable speed compressor
finishing its minimum runtime the CW should close until discharge temperature rises
above the limit.
6.
The following is the compressor staging sequence.
Compressors on cycle with energy saver
-Variable speed compressor C1 comes on at Temperature Setpoint + temperature
deadband + STS band. Once variable speed compressor comes on it will use PID
logic to maintain temperature setpoint + 1Deg F (to make sure CW is fully utilized).
-Fixed speed compressor C2 (*) comes on at Temperature Setpoint + Temperature
Deadband + 1°F + STS DB and variable speed compressor C1 has operated at 95% for at least the C2 on delay. When C2 comes on, variable speed compressor
C1 will drop its speed to minimum speed for a delay modulation period.
Compressors off cycle during energy saver mode
-Fixed speed compressor c2 (*) cycles off at Temperature Setpoint + STS DB for a
C2 off delay duration and variable speed compressor C1 runs at 100% .
-Variable speed compressor C1 cycles off at Temperature Setpoint Compressor will
not violate its minimum runtime and short cycle regulation.
* This applies on dual compressor system.
3.
Dehumidification mode
Dehumidification is controlled based on return air conditions and has five control modes: None,
1C In limit (one compressor within reheat limit), 1C No limit (one compressor without reheat limit),
2C In limit (two compressors within reheat limit) and 2C No Limit (two compressors without reheat
limits).
a)
There are three dehumidification control modes for single compressor unit: None, 1C in
limit and 1C No limit.
b)
There are five dehumidification control modes for dual compressors unit.
c)
Reheat is required for dehumidification.
d)
Dehumidification cooling can be controlled by relative humidity and/or dew point.
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e)
If dehumidification is programmed for “1C in limit” or “2C in limit” the dehumidification
cooling will be inhibited by reheat if the return air temperature drops below Temperature Setpoint - Temperature DB - 2deg F. Dehumidification will be inhibited until the return air
temperature rises above the Temperature Setpoint. Compressor short-cycle time will not
be violated.
f)
If dehumidification is programmed for “1C No Limit” or “2C No Limit”, dehumidification
remains on until the humidity setpoint is reached. In this mode, dehumidification has
priority and overcooling is disregarded. The reheat sequence will remain the same.
g)
There is a one (1) minute delay between stop-to-start of dehumidification cooling. Compressor short-cycle time delay will not be violated.
h)
There is a five (5) minute delay between dehumidification and humidification.
i)
Relative humidity control mode is not recommended for discharge temperature control, Dewpoint control method should be used in this case.
j)
The compressor staging sequence for dehumidification cooling is as follows:
A.
Relative humidity control mode:
a)
Single Variable speed compressor system
Dehumidification cycles on
-If unit is not in cooling mode, the variable speed compressor turns on when humidity
is at Humidity Setpoint (HSP) + Humidity Deadband (HDB).
Compressor will modulate its speed from 0% to 100% in 1%RH above Humidity
Setpoint +Humidity DB. For instance:
If Humidity = Humdity Setpoint + Hum Deadband, VFD will run at 0VDC
If Humidity = Humdity Setpoint + Hum Deadband + 0.1%, VFD will run at 10%
If Humidity = Humdity Setpoint + Hum Deadband + 0.2%, VFD will run at 20% Etc.
--
If cooling requires during dehumidification cycle and dehumidification mode is set
to “1C in limit” the temperature cooling control will override the dehumidification
cooling control. If dehumidification mode is set to “1C No limit”, unit will continue to
finish the dehumidification cycle then switch to temperature control cooling mode.
Dehumidification cycles off
-Variable speed compressor C1 starts to ramp down in 0.1 % RH decrement when
Humidity drops to Humdity Setpoint + 1%. Compressor decreases 10% speed for
each 0.1%RH.
-When Humidity equals Humdity Setpoint, compressor runs at its minimum speed
(0 VDC).
-When Humidity is at Humidity Setpoint – 0.5 % and compressor minimum runtime
expired, compressor turns off (NO2 start signal turns off).
b)
Dual DX circuit with a variable speed compressor and a fixed speed compressor
83 • dap4 User Manual
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Dehumidification cycles on
-If unit is not in cooling mode, C1 variable speed compressor turns on when humidity
is at Humidity Setpoint + Humidity Deadband then runs at its minimum speed (0V).
C1 compressor will modulate from 0% to 100% in 0.1% RH increment (10% speed
for each 0.1% RH). It will operate at 100% speed when humidity rises to Humidity
setpoint + Humidity deadband+ 1%. For instance:
If Humidity = Humdity SP + Hum Deadband, C1 will run at 0%
If Humidity = Humdity SP + Hum Deadband + 0.1%, C1 will run at 10%
If Humidity = Humdity SP + Hum Deadband + 0.2%, C1 will run at 20% Etc.
-
-
-
C2 fixed speed compressor cycles on at Humidity setpoint + Humidity dead
band+1.1%.
If space is overcool, reheat will come on based on temperature setpoint and C2 compressor will turn off. C1 variable speed compressor will continue to run until humidity setpoint satisfies but not to violate the dehumidification inhibit logic
(In limit/ No limit) stated above.
If unit is in cooling mode and dehumidification mode is set to “1C in limit” or “2C in
limit”, the temperature cooling control mode will override the dehumidification control
(cooling control will follow the temperature setpoint). Otherwise, dap4 will continue to
finish the dehumidification cycle then reverse to temperature control cooling mode.
Dehumidification cycles off
-When humidity drops, Fixed speed compressor C2 (NO3) will turn off when humidity
= Humidity Setpoint +1%.
-C1 will ramp up to maximum speed for a modulation delay period when C2 turns off.
-Variable speed compressor C1 starts to ramp down in 0.1 % RH decrement when
Humidity drops to Humdity Setpoint + 1% (decreasing 10% speed for every 0.1%RH).
-C1 compressor will run at its minimum speed when humidity = Humidity SP.
-Compressor C1 turns off (NO2 signal off) when humidity = Humidity SP - 1% and compressor minimum runtime has expired.
B.
Dewpoint control mode
The humidifier control mode is set to Dew point. High dewpoint setpoint, low dewpoint setpoint
and dewpoint deadbands are programmed on dap4- menu B - Setpoint.
a)
Single Variable speed compressor system
Dehumidification cycles on- Dewpoint temperature is rising
-If unit is not in cooling mode, the variable speed compressor turns on when
dewpoint is at High dewpoint SP- 1Deg F and operates at minimum speed (0V) then
it will modulate from 0% to 100% in 0.1% increment if dewpoint rises to high
dewpoint setpoint. For instance:
If dewpoint = High dewpoint SP – 1 Deg F, compressor will run at 0% (0VDC)
If dewpoint = High dewpoint SP – 0.9 DegF, compressor will run at 10% (1V)
If If dewpoint = High dewpoint SP – 0.8 DegF, compressor will run at 20% (2V) Etc.
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If unit is in cooling mode during dehumidification cycle and dehumidification mode
is set to “1C in limit”, the cooling control (By temperature setpoint) will override the
dewpoint control. If dehumidification mode is set to “1C No Limit”, unit will continue
to finish the dewpoint control cycle then reverse to the cooling control.
Dehumidification cycles off - Dewpoint is dropping
-Variable speed compressor C1 starts to ramp down in 0.1 % decrement when
dewpoint drops to high dewpoint Setpoint – high dewpoint deadband.
-Compressor will run at minimum speed (0V) when dewpoint is at high dewpoint
setpoint – high dewpoint deadband-1°F.
-Compressor turns off (NO2 start signal turns off) when dewpoint equals to high dewpoint setpoint – high dewpoint deadband-1.5 deg F and compressor minimum
runtime has expired.
b)
Dual DX circuit with a variable speed compressor and a fixed speed compressor
Dehumidification cycles on – dewpoint is rising
-If unit is not in cooling mode, If dewpoint continues to rise, the variable speed
compressor will turns on when dewpoint = High dewpoint SP- 1Deg F and operates
at minimum speed (0V) then modulates from 0% to 100% in 0.1% increment if
dewpoint rises to high dewpoint setpoint. For instance:
If dewpoint = High dewpoint SP – 1 Deg F, compressor will run at 0% (0VDC)
If dewpoint = High dewpoint SP – 0.9 DegF, compressor will run at 10% (1V)
If If dewpoint = High dewpoint SP – 0.8 DegF, compressor will run at 20% (2V) Etc.
--
-
C2 fixed speed compressor will cycle on when dewpoint = high dewpoint setpoint.
If space is overcool, reheat will come on based on temperature setpoint and C2 compressor will turn off. C1 variable speed compressor will continue to operate until
dewpoint drops below High dew setpoint – High DP DB-1 Deg F but not to violate
the dehumidification inhibit logic (In limit/ No limit) stated above.
If cooling is on during dehumidification cycle and dehumidification mode is set to “2C
in limit” or “1C in limit”, the temperature cooling control will override the dewpoint control. If dehumidification mode is set to “1C No Limit” or “2C No Limit” the unit will
continue to finish the dewpoint control cycle then reverse to the temperature control.
Dehumidification cycles off- dewpoint is dropping
-C2 fixed speed compressor (NO3) will turn off when dewpoint = High dewpoint
Setpoint – highdewpoint deadband.
-Variable speed compressor C1 starts to ramp down in 0.1 % decrement when
dewpoint drops below High dewpoint Setpoint – High dewpoint deadband.
-C1 compressor will run at minimum speed when dewpoint = High dewpoint SPdewpoint deadband-1°F.
-C1 compressor turn off (NO2) when dewpoint = High dewpoint SP –dewpoint
deadband - 1.5 Deg F and variable speed compressor minimum runtime has
expired.
85 • dap4 User Manual
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c)
High Relative humidity Limit in dewpoint control
•
If high relative humidity condition occurs while humidity control mode is set to
Dewpoint control then dewpoint control has priority over the relative humidity control.
•
If high dewpoint setpoint satisfies but relative humidity rises to relative humidity
setpoint, the dehumidification control will be as follows:
i)
Single Variable speed compressor system
Dehumidification cycles on:
If unit is not in cooling mode, the variable speed compressor turns on when humidity is at
Humidity Setpoint (HSP) -1%.Compressor will modulate from 0% to 100%, 10% speed for
every 0.1%RH. Compressor will run at 100% when humidity equals humidity setpoint.
Dehumidification cycles off:
Variable speed compressor C1 starts to ramp down in 10 % decrement when Humidity drops to Humdity Setpoint –humidity deadband. Compressor will run at minimum speed (0 VDC) when humidity equals humidity setpoint – humidity deadband- 1%.Compressor turns off when Humidity = Humidity Setpoint – humidity deadband- 1.5 % and minimum runtime expired.
ii)
Dual circuit with a variable speed compressor and a fixed speed compressor
Dehumidification cycles on:
If unit is not in cooling mode, C2 fixed speed compressor turns on when humidity reaches
Humidity Setpoint (HSP). Compressor will not violate the compressor short cycle regulation.
Dehumidification cycles off:
Compressor C2 turns off when humidity = humidity setpoint- humidity deadband.
Safeties and Alarms for System with Electronic Expansion Valve (EEV)
i
High suction temperature alarm.
The variable speed compressor’s suction temperature can be viewed on dap4.
Compressors’ high suction temperature alarm limits is default to 85oF (the range is 80-
95°F) and a suction temperature deadband is default to 5 oF(1-5°F).
a.
When C1 has been running for 3 minutes and suction temperature is higher than the
alarm setpoint, C1 high suction temperature alarm will activate.
b.
C1 compressor will shut down during high suction temperature alarm. Alarm will
automatically reset if suction temperature falls below the high suction temperature
alarm limit minus the deadband and the variable speed compressor resumes
operation if high suction temperature alarm has been cleared for 5 minutes.
c.
An alarm message on dap4 display will notify the end-user that compressors
lock-out are delayed by high suction temperature alarm time-out during this 5
minutes time-out.
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d.
e.
ii
Alarm relay energizes when this alarm is active.
Optional compressor lock-out on high suction temperature alarm can be enable in
menu K- alarm and limits of dap4. The default setting is “disable”. If enable, when
alarm counts match the programmed Lock-out times the compressor will be locked
out until it is manually reset by pressing the alarm button while alarm message
appears on screen.
Variable speed compressor’s low suction pressure alarm.
a.
b.
c.
The variable speed compressors’ low suction pressure cut-out setpoint is default to
90 psi (range is 85 to 110 psi) and suction pressure deadband at 5 psi (range from 1
to 10 psi).
Compressor is shut down during this alarm and a low suction pressure alarm
message will display on dap4 when suction pressure drops below the low suction
pressure setpoint and C1 has been running for 3 minutes. The variable speed
compressor will automatically cycle on when its suction pressure rises above cut-out
pressure limit plus suction pressure deadband but it cannot violate the compressor
short cycle time delay and allowable reset times mentioned in section (c) below.
Optional compressor lock-out on Low suction pressure alarm with manual reset can
be enable in menu K- alarm and limits of dap4. The default setting is “disable”. If
enabled, when alarm counts match the programmed Lock-out times the compressor
will be locked out until it is manually reset by pressing the alarm button while alarm
message appears on screen.
iii
If discharge temperature sensor is installed, low discharge temperature setpoint to turn off
compressor when the alarm is enabled and discharge temperature go below the low
discharge temperature limit setpoint.
iv
EEV’s critical alarms shut down the compressor until the alarms are cleared. The following
EEV critical alarms will cause the variable speed compressor to shut down:
EEPROM error
Sensor errors (S1 to S4 depending on single/dual)
Motor errors
EEV Module not detected (when communication between the dap4 and EVD driver
is lost)
Low Superheat (note: we will set the setpoint at 2°F on the EVD)
High Evap. Temp alarm:
High Evap. Temp (MOP alarm) alarm that is detected by EEV driver will display but
will not shut the compressor down.
v
If the super heat is over 34°F for over 30 seconds, “Superheat is over 34°F” message will
display. If the super heat is over 50°F for over 30 seconds, “Superheat is over 50°F” alarm
message will display and the compressor will shut down. Compressor will come back and
alarm message will disappear when superheat is below 30°F.
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AUTOMATIC FLUSH CYCLE for CHILLED WATER or HOT WATER COILS
If 100 hours elapses and the chilled water or hot water valve has not opened for normal cooling or
heating, the valve will automatically open for 30 seconds to flush the coil. The display module will
not display a message indicating the flush cycle is in progress.
HUMIDIFIER AUTO-FLUSH TIMER CONTROL
1. Humidifier auto-flush timer is optional. The auto-flush timer is only available on units with infrared humidifiers.
2. The auto-flush timer is programmable (See Menu J – Factory Settings).
3. The auto-flush cycle takes 11 minutes. The sequence is as follows:
•
•
•
•
For the first four minutes the drain solenoid is opened and humidification is inhibited (the
display module will have the following message: Humidification Inhibited by Auto-Flush). Humidity related alarms are disabled.
During the fifth and sixth minutes the solenoid is closed and the drain starts to fill
From minutes seven through eleven the humidification is enabled and the pan continues
to fill. The Humidification Inhibited message is discontinued.
After eleven minutes the humidity alarms are enabled
HUMIDITY ANTICIPATION
1. Humidity anticipation is programmable: ON or OFF (See Menu J – Factory Settings)
2. When set to ON, the humidity setpoint is automatically modified to reduce excessive humidifying
and dehumidifying.
•
•
The humidity setpoint is decreased by 1% for 1.5°F the return air temperature rises
above the temperature setpoint. The maximum amount the humidity setpoint may be
decreased is 10% (15°F above the return air temperature setpoint).
The humidity setpoint is increased by 1% for every 1.5°F the return air temperature falls
below the temperature setpoint. The maximum amount the humidity setpoints may be
increased is 10% (15°F below the return air temperature setpoint).
MANUAL OVERRIDE
When the manual override function is used, the automatic functions of the processor are disabled
and all desired functions must be changed to manual override. The display module will indicate
Manual Override.
TEMPERATURE and HUMIDITY SENSOR PROBLEM
1. A temperature sensor problem will activate all of the cooling stages if the unit is operating at the
time of the problem.
2. A humidity sensor problem will inhibit the humidification or dehumidification functions if the unit
is operating at the time of the problem.
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COMPRESSOR SHORT-CYCLE ALARM
1. Compressor shot-cycle alarm is programmable (See Menu K – Alarms and Limits). A compressor short-cycle alarm will activate if the compressor has been energized ten (10) times in a one
(1) hour period.
2. The alarm is a warning only. Compressor operation will continue.
3. One cycle is a combination of compressor starts for cooling or dehumidification functions. 4. If the compressor is started ten (10) times in a one (1) hours period, the alarm will be activated
and the message “Comp Short- Cycle” will be displayed on the display module.
5. The compressor short-cycle time delay will be increased from five (5) to six (6) minutes for the
next hour.
6. The short-cycle alarm will not clear until a one (1) hour period has passed with less than ten
(10) compressor starts.
POWER PROBLEM or RESTART MODE
The Power Problem or Restart Mode is programmable (See Menu K – Alarms and Limits). There
are three available selections:
1. “Auto, No Alarm” (Automatic: No Message or Alarm). The unit will automatically start after a
power failure or reset. No audio alarm will sound. No message will be displayed on the display
module.
2. “Auto, With Alrm” (Automatic: Message, Audio Alarm & Relay). The unit will automatically restart after a power failure or reset. The audio alarm will be activated and the message “ Power
Failure Restart” will be displayed on the display module.
3. “Man, Clr Alarm” (Manual: Message, Audio Alarm & Relay). The unit will NOT automatically
restart after a power failure or restart.
FAN FAILURE ALARM IN CHILLED WATER SYSTEM
Chilled water unit with dap4 controller and plug fans currently has eight different fan speed control
modes. Each mode is modified to add the following fan speed control logic when a Fan Failure
alarm is detected. Fan failure alarm will be detected by fan alarm contact; this sends an alarm
signal to digital input DI12 of the dap4.
When a Fan Failure alarm is detected, the fan speed will automatically ramp up to 100%. If dap4
is programmed to constant speed mode or to maximum speed if dap4 is programmed to other
fan speed control modes. While the Fan failure alarm is active, the audio alarm will sound and an
alarm message “Fan Fails, Check fans” display on dap4 LCD screen. The reheat and humidifier
will be inhibited during fan failure alarm but the chilled water valve will continue to operate. The
fan speed control should automatically go back to the normal operation mode when fan failure no
longer exists. Note: This logic does not affect any menu settings
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NO AIRFLOW ALARM
1. When no airflow is detected via the air flow switch or current sensing relay, the cooling, reheat, humidification and dehumidification functions are locked out until the alarm condition is
corrected. Menu K – Alarms and Limits, allows adjustment of the alarm delay from 5 to 180 seconds in 5 second increments. Adjustment is to minimize false alarms due to air turbulence.
2. On chilled water units a “FAN FAILURE” alarm is included in addition the NO AIRFLOW ALARM. On units with multiple plug fans, if a fan failure alarm is detected, the speed of the remaining motors will ramp up to 100%, if the dap4 is programmed to constant speed mode.
If programmed to one of the other fan speed control modes, the fans will ramp up to maximum
speed. Reheat and humidifier operations will be inhibited during a fan failure alarm. The
chilled water valve will continue to modulate, the remaining fans will continue to run and the
unit continue to cool. The fan speed control will automatically return to normal operation mode
when the fan failure is corrected.
DIRTY FILTER ALARM
When a dirty filter is detected (through the unit mounted pressure differential switch), the audio
alarm is activated and a “Dirty Filter” message will be displayed on the display module until the
condition is corrected.
FIRESTAT TEMPERATURE ALARM
1. The firestat temperature alarm is programmable from 100 to 150°F (See Menu K – Alarms and
Limits).
2. If the return air temperature reaches the firestat temperature alarm limit, the blower, cooling,
reheat, humidification and dehumidification functions are immediately terminated. 3. The audio alarm is activated and “Firestat Tripped – Unit Shutdown” message will be displayed
on the display module until the condition is corrected.
4. The alarm will prevent the unit from operating until the alarm is corrected.
HIGH TEMPERATURE ALARM LIMIT
1. The high temperature alarm limit is programmable (See Menu K – Alarms and Limits). The
range is from 70 to 90°F. It can also be disabled.
2. If the alarm is not disabled and the return air temperature rises above the high temperature
alarm limit, the audio alarm is activated and a “High Return Air Temperature” message is displayed on the display module.
3. The audio alarm is a warning only and will not prevent any of the unit functions form operating.
4. The alarm will remain until the alarm condition is corrected.
LOW TEMPERATURE ALARM LIMIT
1. The low temperature alarm limit is programmable (See Menu K – Alarms and Limits). The
range is from 55 to 75°F. It can also be disabled.
2. If the alarm is not disabled and the return air temperature falls below the high temperature
alarm limit, the audio alarm is activated and a “Low Return Air Temperature” message is dis90 • dap4 User Manual
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played on the display module.
3. The audio alarm is a warning only and will not prevent any of the unit functions form operating.
4. The alarm will remain until the alarm condition is corrected.
HIGH HUMIDITY ALARM LIMIT
1. The high humidity alarm limit is programmable (See Menu K – Alarms and Limits). The range
is from 35 to 90%. It can also be disabled.
2. If the alarm is not disabled and the return air temperature rises above the high humidity alarm
limit, the audio alarm is activated and a “High Humidity Warning” message is displayed on the
display module.
3. The audio alarm is a warning only and will not prevent any of the unit functions form operating.
4. The alarm will remain until the alarm condition is corrected.
LOW HUMIDITY ALARM LIMIT
1. The high humidity alarm limit is programmable (See Menu K – Alarms and Limits). The range
is from 10 to 65%. It can also be disabled.
2. If the alarm is not disabled and the return air temperature rises above the high humidity alarm
limit, the audio alarm
is activated and a “Low Humidity Warning” message is displayed on the display module.
3. The audio alarm is a warning only and will not prevent any of the unit functions form operating.
4. The alarm will remain until the alarm condition is corrected.
LOW DISCHARGE TEMPERATURE ALARM LIMIT
1. An optional discharge sensor is required. The low discharge temperature alarm limit is programmable (See Menu K – Alarms and Limits). The range is from 45 to 60°F. It can also be
disabled.
2. If the alarm is not disabled and when the discharge air temperature falls to the low discharge
alarm limit, the audio alarm is activated and a “Low Discharge Air Temperature” message will
be displayed on the display module.
3. If the optional Energy Saver with Compressor Assist is used (See Menu J – Factory Settings),
the compressor(s) will be inhibited for 15 minutes.
4. The alarm will remain until the alarm condition is corrected.
SCHEDULED NORMAL MAINTENANCE ALARM
1. The scheduled normal maintenance alarm is programmable (See Menu K – Alarms and Limits).
The programmable range is 1 to 100 hours. It may also be disabled.
2. The alarm is a warning only and will not prevent any of the unit functions from operating.
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3. The alarm will remain until the alarm condition is corrected.
HIGH PRESSURE/INTERNAL OVERLOAD COMPRESSOR ALARM
1. In the event of a high pressure condition, the high head pressure switch is tripped or the
compressor(s) overload contact opens, the audio alarm is activated and a “Circuit #1: High
Pressure” or “Circuit #2: High Pressure” message will be displayed on the display module.
2. The alarm will prevent the compressor(s) from operating and must be MANUALLY RESET.
3. The alarm will remain until the alarm condition is corrected.
LOW PRESSURE COMPRESSOR ALARM
1. In the event of a low pressure condition, the audio alarm is activated and a “Circuit #1: Low
Pressure” or “Circuit #2: Low Pressure” message will be displayed on the display module.
2. The alarm will prevent the compressor(s) from operating but will automatically reset when the
head pressure condition is corrected.
3. The alarm will remain until the alarm condition is corrected.
PERSON TO CONTACT ON ALARM
1. The person to contact on alarm is programmable (See Menu K – Alarms and Limits). It can
also be disabled.
2. The alarm is a warning only and will not prevent any of the unit functions from operating.
3. The alarm will remain until the alarm condition is cleared.
SMOKE ALARM
1. The smoke alarm requires an optional smoke detector.
2. If the smoke detector senses smoke, the blower, the cooling, the reheat, the humidification and
dehumidification are immediately terminated.
3. The audio alarm is activated and a “Smoke Detector” message is displayed on the display
module.
4. The alarm will prevent the unit from operating until the alarm condition is corrected.
HIGH CONDENSATE WATER LEVEL ALARM
1. The high condensate water level alarm requires an optional condensate pump and secondary
float switch.
2. When the high condensate water level alarm is activated, the blower, the cooling, the reheat,
the humidification and dehumidification are inhibited.
3. The audio alarm is activated and a “High Condensate Water Level” message is displayed on
the display module.
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4. The alarm will prevent the unit from operating until the alarm condition is corrected (condensate
pump is checked and its float switch is open).
FAN MOTOR OVERLOAD ALARM
1. The fan motor overload is optional and requires a motor overload relay contact for each motor.
2. The alarm is programmable (See Menu …….)
3. The audio is activated and a “Blower Overload” message is displayed on the display module.
4. The alarm is a warning only and will not prevent any of the unit functions from operating.
5. The alarm will remain until the alarm condition is corrected.
NO WATER FLOW ALARM ACTION
1. The no water flow alarm is optional and requires a field provided and installed flow switch.
2. The no water flow alarm action is programmable (See Menu K – Alarms and Limits).
3. The audio alarm is activated and a “No Water Flow – Check Pump” message will be displayed
on the display module.
4. The alarm can be set as a warning and will not prevent any of the unit functions from operating
or it can be set to lockout the compressor(s). All other functions continue and manual reset is
required.
5. The alarm will remain until the alarm condition is corrected.
NO WATER FLOW ALARM ACTION – CHILLED WATER UNITS
1. The dap4 controller will not detect the no water flow alarm unless the chilled water valve position is at least 60% open.
2. If the valve opens 60% or more, the no water flow alarm detection will be displayed for the
amount of delay set in Menu K (Alarms and Limits). The programmable range is from 5 to 180
seconds in 1 second increments.
3. A “No Water Flow – Check Pump” message will be displayed on the display module and the
alarm contacts will close when a no water flow alarm is detected.
NO WATER FLOW ALARM ACTION – DX COOLING UNITS
1. The dap4 controller will only detect the no water flow alarm when the unit calls for cooling.
2. Each time the cooling stage starts, the no water flow alarm detection will be displayed for the
amount of time that is set in Menu K (Alarms and Limits). The programmable range is from 5 to
180 seconds in 1 second increments. The factory setting is 5 seconds
3. If the “Action” is set (See Menu K – Alarms and Limits) to “Compressor Lockout”, when a no
water flow alarm is detected, the compressor(s) will be inhibited for 5 minutes and a “No Water
Flow Check Pump: Compressor Lock-out” message will be displayed on the display module.
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STANDBY PUMP ON ALARM
1. The standby pump on alarm is optional and requires a contact from the optional Pump AutoChangeover control to be added to the remote dry cooler.
2. The alarm is programmable (See Menu K – Alarms and Limits).
3. The audio alarm is activated and a “STANDBY PUMP ON” message will be displayed on the
display module.
4. The alarm is a warning only and will not prevent any of the unit functions from operating.
5. The alarm will remain until the alarm condition is corrected.
UPS/ALTERNATE POWER ON ALARM
1. The UPS/alternate power on alarm is optional and requires an input contact from a field supplied alternate power source or contacts.
2. The alarm is programmable (See Menu K – Alarms and Limits).
3. The audio alarm is activated and a “UPS/Alternate Power On:Check Main Power” message will
be displayed on the display module.
4. The alarm is a warning only and will not prevent any of the unit functions from operating.
5. The alarm will remain until the alarm condition is corrected.
REHEAT INHIBITED ALARM
1. The reheat inhibited alarm is optional and requires an input contact from a field supplied alternate power source or contacts.
2. The alarm is programmable (See Menu K – Alarms and Limits).
3. The audio alarm is activated and a “Reheat Inhibited” message will be displayed on the display
module.
4. If in operating mode, the reheat is shut off and locked (off) when alarm is present.
5. The alarm will remain until the alarm condition is corrected.
HUMIDIFICATION INHIBITED ALARM
1. The humidification inhibited alarm is optional and requires an input contact from a field supplied
alternate power source or contacts.
2. The alarm is programmable (See Menu K – Alarms and Limits).
3. The audio alarm is activated and a “Humidification Inhibited” message will be displayed on the
display module.
4. If in operating mode, the humidification is shut off and locked (off) when alarm is present.
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5. The alarm will remain until the alarm condition is corrected.
REHEAT AND HUMIDIFICATION INHIBITED ALARM
1. The humidification inhibited alarm is optional and requires an input contact from a field supplied
contact.
2. The alarm is programmable (See Menu K – Alarms and Limits).
3. The audio alarm is activated and a “Reheat and Humidification Inhibited” message will be displayed on the display module.
4. If in operating mode, the reheat and humidification is shut off and locked (off) when alarm is
present.
5. The alarm will remain until the alarm condition is corrected.
CUSTOM MESSAGE ALARM
1. The custom message is optional and requires factory programming and is limited to twenty-one
(21) characters including spaces.
2. The custom message alarm can be changed to preset messages or to a no contact message
(See Menu K – Alarms and Limits).
3. The alarm is activated and the custom message is displayed on the display module.
4. The alarm will remain until the alarm condition is corrected.
WATER UNDER FLOOR DETECTION ALARM
1. The water under floor detection alarm message is displayed when the alarm is activated (the
sensor has detected water).
2. The alarm is programmable (See Menu K – Alarms and Limits). There are three (3) settings:
Alarm Only, Shutdown Unit and Lockout Comps. The unit will respond to the setting.
3. Unit will return to normal operation when the alarm is corrected.
OPTIONAL AIRFLOW DISPLAY LOGIC
When “Fan Setting” in Factory Setting Menu is selected as flow control or whenever the “Static Air
Pressure” analog input is enabled, user will have an option to display the airflow or not. To displa
the airflow, go into Factory Setting, “Fan Settings” page and change the “Display Airflow” from “No”
to “Yes”. On the next page, “Fan Air Flow”, key in the number of fans and appropriate fan k-factor.
Note: This feature requires the airflow measurement kit (OPT-7237)
FAN SPEED CONTROL FOR CHILLED WATER (CW) UNITS WITH PLUG FANS
Nine (9) fan speed control modes can be selected for units with plug fans. The control modes are
programmable (See Menu J – Factory Settings: Fan Settings). Any one of the following may be
chosen:
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1.
2.
3.
4.
5.
6.
7.
8.
9.
Speed Constant (Const. Speed)
Speed Controlled by BMS (BMS Speed)
Speed Proportional to CW Valve (Vlv. Pos. Speed)
Static Pressure Constant (Air Pressure)
Airflow Constant (Const. flow)
Airflow Controlled by BMS (BMS Flow)
Airflow Proportional to CW Valve (Vlv. Pos. Flow)
Fan speed controlled by Return air temperature setpoint (Mod to R. Air)
Mod to Rack
1. Speed Constant (Const. Speed) - Default
In Speed Constant mode, the dap4 will start and operate the fan at the constant speed set in
CW SPEED. The constant speed is controlled by outputting a constant voltage to the fan
speed controller.
2. Speed Controlled by BMS (BMS Speed)
In Speed Controlled by BMS mode, the dap4 will start and operate the fan at the constant
speed set in CW Speed menu until it receives a new valid fan speed (30% - 100%) from a
BMS. The constant speed is controlled by outputting a constant voltage to the fan speed controller.
The fan speed will automatically increase to the maximum fan speed set in MODULATE MAX
menu when reheat or humidification is required. The fan speed will revert to the BMS controlled fan speed setting when the unit stops calling for reheat or humidification.
WARNING: IF CUSTOMER DECIDES TO USE THIS FAN SPEED CONTROL MODE (FAN
SPEED CONTROLLED BY BMS), DATA AIRE WILL NOT BE RESPONSIBLE FOR ANY EFFECTS, MALFUNCTIONS OR SPACE CONTROL CONDITIONS CAUSED BY THIS
SELECTION.
3. Speed Proportional to CW Valve (Vlv. Pos. Speed)
On units where proportional fan speed control based on the CW valve position is required, the
maximum fan speed is programmed in MODULATE MAX menu, and the minimum fan speed
as a percentage of the maximum fan speed is programmed via MODULATE MIN speed menu.
EXAMPLE: Assume a fan with a speed capacity of 1750 RPM, a maximum design fan speed of
1501 RPM and a minimum design fan speed of 901 RPM. Menu Modulate Max would be set
to 1501/1750 = 0.8577 or 86%, and menu Modulate Min would be set to 901/1501 = 0.6003 or
60%.
When the fan starts, it will operate at the minimum fan speed. As the chilled water valve opens,
the fan speed will modulate proportionally based on the CW valve position from the minimum
fan speed (when the CW valve is fully closed) to the maximum fan speed (when the CW valve
is fully open).
The fan will operate at the maximum programmed speed when the unit calls for reheat or
humidification.
Water valve action menu (Wtr Vlv Action) can be chosen for reverse acting valves. With this
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option turned on, the fan will operate at minimum fan speed when the valve is fully open and at
maximum fan speed when the valve is fully closed.
4. Static Pressure Constant (Air Pressure) - Optional
In Static Pressure Constant mode, a differential pressure (DP) transducer is required and
connected to dap4 module to report the differential pressure across the unit (between supply
and return air section).
When started in this mode, the fan will first operate at the constant speed set in CW Speed for
5 minutes. After that, the fan will proportionally increase or decrease the speed to maintain the
constant static pressure setpoint set in Static Air Pressure menu page, and the deadband set in
static band.
5. Airflow Constant (Const. flow) - Optional
This option requires a factory installed airflow flow measurement kit and programming.
On units where constant design airflow is required, an airflow value is entered into airflow SET
POINT on FAN AIR FLOW menu. In this mode, the fan will start and operate at this constant
design airflow all the time. 6. Airflow Controlled by BMS (BMS Flow) - Optional
In Airflow Controlled by BMS mode, the dap4 will start and operate the fan at the constant air
flow set in air flow setpoint in Fan Air flow menu until the dap4 receives a valid airflow value
(greater than the minimum allowed airflow and less than the maximum allowed airflow) from a
BMS. This control mode requires an optional airflow measurement kit. The airflow will automatically increase to the maximum airflow set in Maximum Flow when
reheat or humidification is required. The airflow will revert to the BMS controlled airflow setting
when the unit stops calling for reheat or humidification.
WARNING: IF CUSTOMER DECIDES TO USE THIS FAN SPEED CONTROL MODE (AIR
FLOW CONTROLLED BY BMS), DATA AIRE WILL NOT BE RESPONSIBLE FOR ANY
EFFECTS, MALFUNCTIONS OR SPACE CONTROL CONDITIONS CAUSED BY THIS
SELECTION.
7. Airflow Proportional to CW Valve (Vlv. Pos. Flow) - Optional
On units where proportional fan airflow control based on the CW valve position is required, the
maximum airflow is programmed via Maximum Flow menu, and the minimum airflow as a percentage of the maximum airflow is programmed via Minimum Flow menu in Fan Air flow setting.
This control mode requires an optional airflow measurement kit. When the fan starts, it will operate at the minimum airflow value. As the chilled water valve
opens, the fan airflow will modulate proportionally based on the CW valve position from the
minimum airflow (when the CW valve is fully closed) to the maximum airflow (when the CW
valve is fully open).
The fan will operate at the maximum airflow when the unit calls for reheat or humidification.
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Water valve action menu (Wtr Vlv Action) can be chosen for reverse acting valves. With this option turned on, the fan will operate at minimum airflow when the valve is fully open and at maximum airflow when the valve is fully closed.
8. Fan speed controlled by Return air temperature setpoint (Mod to R. Air)
1. There is RA Temp fan setpoint and RA Temp fan Deadband in the setpoint group. These
setpoint only display whenever the Fans speed by RA Temp mode is selected in the CW fan
mode section in Factory Setting group
The logic for fan speed uses the maximum and minimum fan speeds from Modulate Max and
Modulate Min speed menus. As the return temperature rises, the fan would start at the minimum and increase by 10%*(maximum fan speed-minimum fan speed) for every 0.1°F above
RA Temp setpoint + RA Temp deadband. Fan speed reduces to minimum speed when RA
temperature is at setpoint.
9. Mod to Rack.
See RackSense 32 User’s Manual for details.
FAN SPEED CONTROL FOR DIRECT EXPANSION (DX) UNITS
Six (6) fan speed control modes can be selected for DX units. The control modes are accessible
through Menu J – Factory Settings. Either of the following may be chosen:
1.
2.
3.
4.
5.
6.
Speed Constant (Const. Speed)
Speed Controlled by BMS (BMS Speed)
Static Pressure Constant (Air Pressure)
Airflow Constant (Const. flow)
Airflow Controlled by BMS (BMS Flow)
Mod to Rack
1. Speed Constant (Const. Speed) - Default
In Speed Constant mode, the dap4 will start and operate the fan at the constant speed set in
DX SPEED. The constant speed is controlled by outputting a constant voltage to the fan speed
controller.
2. Speed Controlled by BMS (BMS Speed)
In Speed Controlled by BMS mode, the dap4 will start and operate the fan at the constant speed set in DX Speed menu until it receives a new valid fan speed (30% - 100%) from a BMS.
The constant speed is controlled by out putting a constant voltage to the fan speed controller.
The fan speed will automatically increase to the maximum fan speed set in MODULATE MAX
menu when reheat or humidification is required. The fan speed will revert to the BMS controlled fan speed setting when the unit stops calling for reheat or humidification.
WARNING: IF CUSTOMER DECIDES TO USE THIS FAN SPEED CONTROL MODE (FAN SPEED CONTROLLED BY BMS), DATA AIRE WILL NOT BE RESPONSIBLE FOR ANY
EFFECTS, MALFUNCTIONS OR SPACE CONTROL CONDITIONS CAUSED BY THIS
SELECTION.
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3. Static Pressure Constant (Air Pressure) - Optional
In Static Pressure Constant mode, an optional differential pressure (DP) transducer is required
and connected to dap4 module to report the differential pressure across the unit (between supply and return air section).
When started in this mode, the fan will first operate at the constant speed set in DX Speed
for 5 minutes. After that, the fan will proportionally increase or decrease the speed to maintain
the constant static pressure setpoint set in Static Air Pressure menu page, and the deadband
set in static band.
4. Airflow Constant (Const. flow) - Optional
This option requires a factory installed airflow flow measurement kit and programming.
On units where constant design airflow is required, an airflow value is entered into airflow
SETPOINT on FAN AIRFLOW menu. In this mode, the fan will start and operate at this con-
stant design airflow all the time. 5. Airflow Controlled by BMS (BMS Flow) - Optional
In Airflow Controlled by BMS mode, the dap4 will start and operate the fan at the constant airflow set in air flow setpoint in Fan Air flow menu until the dap4 receives a valid airflow value
(greater than the minimum allowed airflow and less than the maximum allowed airflow) from a
BMS. This option requires a factory installed airflow flow measurement kit and programming.
The airflow will automatically increase to the maximum airflow set in Maximum Flow when
reheat or humidification is required. The airflow will revert to the BMS controlled airflow setting
when the unit stops calling for reheat or humidification.
WARNING: IF CUSTOMER DECIDES TO USE THIS FAN SPEED CONTROL MODE (AIRFLOW CONTROLLED BY BMS), DATA AIRE WILL NOT BE RESPONSIBLE FOR ANY
EFFECTS, MALFUNCTIONS OR SPACE CONTROL CONDITIONS CAUSED BY THIS SELECTION.
6. Mod to Rack
See RackSense 32 User’s Manual for details.
99 • dap4 User Manual
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TEMPERATURE SENSOR CHART
Temperature
°F
-58.0
-56.2
-54.4
-52.6
-50.8
-49.0
-47.2
-45.4
-43.6
-41.8
-40.0
-38.2
-36.4
-34.6
-32.8
-31.0
-29.2
-27.4
-25.6
-23.8
-22.0
-20.2
-18.4
-16.6
-14.8
-13.0
-11.2
-9.4
-7.6
-5.8
-4.0
-2.2
-0.4
1.4
3.2
5.0
6.8
8.6
10.4
12.2
14.0
15.8
17.6
19.4
21.2
23.0
24.8
26.6
28.4
30.2
32.0
°C
-50.0
-49.0
-48.0
-47.0
-46.0
-45.0
-44.0
-43.0
-42.0
-41.0
-40.0
-39.0
-38.0
-37.0
-38.0
-39.0
-34.0
-33.0
-32.0
-31.0
-30.0
-29.0
-28.0
-27.0
-26.0
-25.0
-24.0
-23.0
-22.0
-21.0
-20.0
-19.0
-18.0
-17.0
-16.0
-15.0
-14.0
-13.0
-12.0
-11.0
-10.0
-9.0
-8.0
-7.0
-6.0
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
Resistance
Value
KΩ
329.20
310.70
293.30
277.00
261.80
247.50
234.10
221.60
209.80
198.70
188.40
178.30
168.90
160.10
151.80
144.00
136.60
129.70
123.20
117.10
111.30
105.70
100.40
95.47
90.80
86.39
82.22
78.29
74.58
71.07
67.74
64.54
61.52
58.66
55.93
53.39
50.96
48.65
46.48
44.41
42.25
40.56
38.76
37.05
35.43
33.89
32.43
31.04
29.72
28.47
27.23
100 • dap4 User Manual
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Temperature
°F
33.8
35.6
37.4
39.2
41.0
42.8
44.6
46.4
48.2
50.0
51.8
53.6
55.4
57.2
59.0
60.8
62.6
64.4
66.2
68.0
69.8
71.6
73.4
75.2
77.0
78.0
80.6
82.4
84.2
86.0
87.8
89.6
91.4
93.2
95.0
96.8
98.6
100.4
102.2
104.0
105.8
107.6
109.4
111.2
113.0
114.8
116.6
118.4
120.2
122.0
123.8
125.6
127.4
129.2
131.0
°C
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0
36.0
37.0
38.0
39.0
40.0
41.0
42.0
43.0
44.0
45.0
46.0
47.0
48.0
49.0
50.0
51.0
52.0
53.0
54.0
55.0
Resistance
Value
KΩ
26.13
25.03
23.99
22.99
22.05
21.15
20.29
19.40
18.70
17.96
17.24
16.55
15.90
15.28
14.68
14.12
13.57
13.06
12.56
12.09
11.63
11.20
10.78
10.38
10.00
9.63
9.28
8.94
8.62
8.31
8.01
7.72
7.45
7.19
6.94
6.69
6.46
6.24
6.03
5.82
5.63
5.43
5.25
5.08
4.91
4.74
4.59
4.44
4.30
4.16
4.02
3.90
3.77
3.65
3.53
Temperature
°F
132.8
134.6
136.4
138.2
140.0
141.8
143.60
145.4
147.20
149.0
150.8
152.6
154.4
256.2
158.0
159.8
161.6
163.4
165.20
167.0
168.8
170.6
172.4
174.2
176.0
177.8
179.6
181.4
183.2
185.0
186.8
188.6
190.4
192.2
194.0
195.8
197.6
199.4
201.2
203.0
204.8
206.6
208.4
210.2
212.0
213.8
215.6
217.4
219.2
221.0
222.8
224.6
226.4
228.2
230.0
°C
56.0
57.0
58.0
59.0
60.0
61.0
62.0
63.0
64.0
65.0
66.0
67.0
68.0
69.0
70.0
71.0
72.0
73.0
74.0
75.0
76.0
77.0
78.0
79.0
80.0
81.0
82.0
83.0
84.0
85.0
86.0
87.0
88.0
89.0
90.0
91.0
92.0
93.0
94.0
95.0
96.0
97.0
98.0
99.0
100.0
101.0
102.0
103.0
104.0
105.0
106.0
107.0
108.0
109.0
110.0
Resistance
Value
KΩ
3.42
3.31
3.21
3.11
3.02
2.92
2.83
2.75
2.66
2.58
2.51
2.43
2.36
2.29
2.22
2.16
2.10
2.04
1.98
1.92
1.87
1.81
1.76
1.71
1.66
1.62
1.57
1.53
1.49
1.45
1.41
1.37
1.33
1.30
1.26
1.23
1.20
1.16
1.13
1.10
1.08
1.05
1.02
0.99
0.97
0.94
0.92
0.90
0.87
0.85
0.83
0.81
0.79
0.77
0.75
101 • dap4 User Manual
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Power Inputs
I/O Board Pin ID
ID Connector Number
Unit TB
G
J1-1
TB3-1
Isolated 24 VAC Common
G0
J1-2
TB3-2
Isolated 24 VAC
VG
J4-1
TB3-1
Isolated 24 VAC Common
VG0
J4-2
TB3-2
C1, C4, C9, C16
J12-1, J13-1, J16-1
J22-1
TB1-2B
IDC1, IDC9, IDC13,
IDC15, IDC17
J5-9, J7-5, J8-3,
J19-3, J20-9
TB1-3A
Device
I/O Board Pin ID
ID Connector Number
Unit TB
H out
U1
J2-1
N/A
G+
+VDC
J2-4
N/A
Isolated 24 VAC
Control 24 VAC
Control 24 VAC Common
Sensors
Relative Humidity
Return Air Temperature
Opt Static Pressure
Opt Air Discharge
Opt Chilled Water
Temperature
M
GND
J2-5
N/A
NTC
U4
J3-1
N/A
NTC
GND
J3-2
N/A
I/V out
U7
J6-2
N/A
Ground
GND
J6-4
N/A
NTC
U9
J20-3
N/A
NTC
GND
J20-4
N/A
NTC
U10
J20-5
N/A
NTC
GND
J20-6
N/A
I/O Board Pin ID
ID Connector Number
Unit TB
Compressor 1 High Pressure Alarm
Alarms – Digital Inputs
ID1
J5-1
TB1-25
Compressor 1 Low Pressure Alarm
1D2
J5-2
TB2-26
Compressor 2 High Pressure Alarm
1D3
J5-3
TB2-27
Compressor 2 Low Pressure Alarm
ID4
J5-4
TB2-28
No Airflow Alarm
ID5
J5-5
TB2-18
Opt No Water Flow Alarm
ID6
J5-6
TB2-30
Opt Smoke Detector Alarm
ID7
J5-7
TB2-29
Dirty Filter Alarm
ID8
J5-8
TB1-23
Opt Humidifier Failure Alarm
ID9
J7-1
TB1-24
1D10
J7-2
TB2-31
Opt High Condensate Water Level Alarm
ID11
J7-3
TB1-17
Opt Alarm Input 1
ID13
J8-2
TB1-14
Opt Alarm Input 2
ID14
J8-4
TB1-15
Opt Alarm Input 3
ID15
J19-2
TB1-16
Opt Alarm Input 4
ID16
J19-4
TB1-22
Water Under Floor Alarm
ID17
J20-7
TB2-32
Manual Override Active
ID18
J20-8
MOS-12
Opt Energy Saver Signal
102 • dap4 User Manual
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dap4 I/O Control Board and Unit Terminal Block Pin ID Number
Control & Alarms – Digital Outputs
I/O Board Pin ID
ID Connector Number
Unit TB
System Blower
NO1
J12-2
TB1-4
Compressor 1
NO2
J12-3
TB1-5
Compressor 2
NO3
J12-4
TB1-6
Opt Cooling 3rd Stage
NO4
J13-2
TB2-37
Opt Cooling 4th Stage
NO5
J13-3
TB2-38
Humidifier
NO6
J13-4
TB1-8
C7
J14-1
TB1-9
NO7
J14-2
TB1-10
NO8
J15-1
TB2-47
Status Contact
Condenser Aux
C8
J15-2
TB2-46
Reheat 1
NO9
J16-2
TB1-7
Reheat 2
NO10
J16-3
TB1-20
Reheat 3
NO11
J16-4
TB1-21
NO12
J17-1
TB1-45
Alarm 3
Alarm 4
Alarm 1
C12
J17-2
TB1-43
NC-12
J17-3
TB1-44
NO13
J18-1
TB2-50
C13
J18-2
TB2-48
NO13
J18-3
TB2-49
NO14
J21-1
TB1-13
C14
J21-2
TB1-11
NC14
J21-3
TB1-12
NO15
J21-4
TB1-42
C15
J21-5
TB1-40
NC15
J21-6
TB1-41
Opt Energy Saver
NO16
J22-2
TB1-19
Opt Humidifier Drain (Autoflush)
NO17
J22-3
TB2-39
I/O Board Pin ID
ID Connector Number
Unit TB
Y1
J4-3
TB2-34
VG0
J4-2
TB2-35
Y2
J4-4
TB2-51
VG0
J4-2
TB2-52
Y3
J4-5
TB4-1, 2
VG0
J4-2
TB4-3,4
Y4
J4-6
N/A
VG0
J4-2
Alarm 2
Control – Analog Output
Water Valve Control
Opt Humidifier Modulating Control
Blower Fan Speed Control
SCR Reheat
103 • dap4 User Manual
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Manual Override Switches
For testing and during start-up each Data Aire gForce unit is provided with manual override slide
switches. There are seven slide switches. One for each of the following functions:
Water Valve
Fan Speed
Humidifier
Heat 1
Cool 2
Cool 1
Blower
All automatic control is disabled but the safety switches remain functional. Simply slide the manual
switches to energize the blower, compressors, humidification, reheat and other functions.
The fan speed of the EC (Electronically Commutated) motor can be adjusted from 0 – 10 volts by
adjusting the potentiometer at the left of the Fan Speed switch. The fan will turn 10% for each volt
adjustment. One volt equals 10%. At ten volts the motor is at full speed.
Warning: Do not leave the unit in manual override. Slide the switches to the OFF position when
completing testing and/or start-up. An alarm will be activated if units are left in the ON position.
104 • dap4 User Manual
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Addendum for Dap4 User Manual – gPod Model
The gPod model is specifically suited for agricultural applications. It has additional features of
Lighting control, CO2 level control, and Night time temperature and humidity offsets which are
explained in this document.
1)
Two additional sensors can be installed.
a)
CO2 sensor: Carel (DPWL417000) 4-20mA. With a 24VDC power supply.
b)
Light sensor: 24VAC EM photocell sensor (EM-24A2)
2)
Dap4 I/O connections for gPod system
105 • dap4 User Manual
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3)
Settings in dap4 for gPod model
There are night time offsets to the temperature, humidity and CO2 set points. There are also
additional settings for CO2 high and Low level alarms.
a)
gPod model
The dap4 is set to the gPod model at the factory and “gPOD” will appear on the main screen of dap4. Please contact the Data Aire if your dap4 controller is not set to the gPod
model as required.
b)
CO2 control settings
To access the CO2 level set point, press Menu button then enter the service level password
(default is 0000). After entering the password, use ↑/↓ button to advance to
Menu-B “Set point” then press enter and go to the CO2 set point screen. Here you can ad
just the CO2 level set point, dead band and CO2 valve as desired.
106 • dap4 User Manual
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CO2 Set point
Set point: 1000ppm (100-5000ppm)
Dead band: 25ppm (25-1000ppm)
Min Valve On: 5s (0-32767s)
Valve PWM: 10% (0-100%)
Note: This CO2 set point screen is not shown if the control is not set for CO2 control in the
factory settings menu.
c)
Temperature and humidity set point offsets for night time schedule.
To access the temperature and humidity set points, press Menu button then enter service
password (default is 0000). After entering the password, select Menu-C “Clock/Scheduler”
and go to the Night Schedule screen. Here you can adjust the offsets for temperature and
humidity during the night time schedule.
Night Schedule
Cooling offset: 5.0 (-30 to 10°F)
Heating offset: 5.0 (0 to 30 °F)
Humidify offset: 10% (0-30%)
Dehumidify offset: 10% (0-30%)
Note: Avoid selecting a cooling offset or heating offset that cause excessive power
consumption and/or lead to a system short cycle. (A warning message will appear under
such conditions). For instance, if cooling offset is set to minus 5°F and heating offset is set
to 1°F with 72°F Temp set point and 2°F dead band; during night schedule the cooling set
point is adjusted to 67° and heating set point is adjusted to 71°. This cause the compressor
to run at 69° (set point +dead band) and the heater to also run at 69° (set point – dead band).
d)
Enable CO2 control and CO2 at night control
The default settings are that CO2 control is Yes and Night CO2 control is No. To access these CO2 control functions, Press Menu button then enter the Factory level password (default is 0002). Advance to Menu-J “Factory settings” and move to the Options Installed
screen. Here you can enable the CO2 options as desired.
Options Installed
Electronic Valve: None
Power Meter: No
CO2 Control: Yes (No)
Night CO2 Cntrl: No (Yes)
107 • dap4 User Manual
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Note: Please do not enable any options that are not installed in the unit.
e)
CO2 high and Low level alarm limit settings
To access the CO2 high and low level alarm set points, press Menu button and enter
service password (default is 0000). After entering the password advance to Menu-K “Alarms and Limits” then move to the CO2 Alarms screen. Here you can enable and adjust
the CO2 alarm level thresholds as desired.
CO2 Alarms
Low CO2 Alarm: Yes
Set point: 100ppm (100-5000)
High CO2 Alarm: Yes
Set point: 2000ppm (500-10000)
4)
CO2 control logic
CO2 level control logic (when CO2 control enabled).
i)
The CO2 level (in parts per million) appears on the main display along with other system current conditions such as return air temperature and humidity.
ii)
If the CO2 level drops below the CO2 set point, the output to the CO2 valve is energized and a “CO2 valve on” message will appear on the main status screen. The CO2 valve is modulated on/off to control its duty cycle by the PWM rate (0-100% in
10s intervals). If the Valve PWM is set to 100%, the CO2 solenoid valve will turn on and
not modulate. The valve will be modulated for at least the “Min Valve On” time even if the
CO2 level has risen. Once the CO2 level rises above the CO2 level set point plus CO2 dead band the CO2 valve will remain off.
An example of how CO2 is controlled: let’s assure that the CO2 set point is 1000ppm, CO2
dead band is 25ppm, Min Valve on is 10 seconds and the Valve PWM is 20%. When the
CO2 level falls below 1000ppm, the CO2 solenoid will cycle on for 2 seconds then off for 8
seconds until the CO2 level rises above 1025ppm.
iii)
If the High CO2 level alarm is enabled (Yes) and the CO2 level rises above the
high CO2 alarm set point, a “High CO2 level” message is displayed and audio alarm will sound (if not programmed for Silence). This alarm is a warning only and will not prevent any of the unit functions from operating. The alarm will remain until the alarm condition is
corrected. The alarm output contacts will close if this alarm is selected “Yes” in the alarm
output function list in menu K.
iv)
If the Low CO2 level alarm is enabled (Yes) and the CO2 level drops below the
low CO2 alarm set point, a “Low CO2 level” message is displayed and audio alarm will sound (if not programmed for Silence). The alarm is a warning only and will not prevent any of the unit functions from operating. The alarm will remain until the alarm condition is
corrected. The alarm output contacts will close if this alarm is selected “Yes” in the alarm
output function list in menu K.
v)
CO2 control during Day/Night schedule: If night CO2 control is set to No (default setting), CO2 control will be off at night or when light sensor senses no light and back to normal control mode during day schedule or light is on.
108 • dap4 User Manual
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b)
Night time mode
i)
The night mode can be activated by either; an optional light sensor input or by a
programmed time schedule.
ii)
While in the night mode, the temperature and humidity set points will be offset by the
amount of their offset band settings. See section 3c for details.
iii)
A “Night Sch” status message will appear and the offset Temperature (“TSP”) and
offset Dehumidify (“HSP”) set points are displayed instead of the normal set points.
iv)
Set point offsets work as follows:
Normal daytime mode
•
Cooling and Heating Temp set point = Temp set point
•
Humidify and Dehumidify set point = Hum set point
Temp and Hum set points are adjusted in menu B “Set point”.
Nighttime mode
•
Cooling Temp set point = Temp set point + Cooling offset
•
Heating Temp set point = Temp set point - Heating offset
•
Humidify set point = Hum set point - Humidify offset
•
Dehumidify set point = Hum set point + Dehumidify offset
Night time offsets are adjusted in menu C “Clock/Scheduler”.
v)
CO2 control can be disabled during the nighttime by setting “Night CO2 cntrl” to “No” (default setting) in Menu J “Factory settings”. CO2 control will resume during
daytime mode.
109 • dap4 User Manual
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CONTACT DATA AIRE
Address:
Data Aire, Inc.
230 West Blueridge Avenue
Orange, CA 92865
Telephone: 714-921-6000
800-347-AIRE (2473) Toll Free
E-mail:
Service@dataaire.com
Engineering@dataaire.com
Sales@dataaire.com
Fax:
714-921-6010
714-921-6011
714-921-6022
Web Site:
Main
Engineering
Parts Sales
www.dataaire.com
Job/Unit Information:
Data Aire Job Number: __________________________
Serial Number: ________________________________
Model Number: ________________________________
Date installed:
_______ / _____ / 20_____
Installing Contractor: ______________________________________
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111 • dap4 User Manual
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230 W. BlueRidge Ave.
Orange, CA 92865
800-347-2473
www.dataaire.com
sales@dataaire.com
ISO 9001-2008 Certified
© Copyright 2016 Data Aire, Inc.
A member of the CS Group of Companies
Creating Products That Make Building Better
dap4 UserManual 04/2016
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