I N STALL AT ION &
O PERATIO N MANUAL
LSC
LO W PR OFIL E SE RI E S FA N
PO WER ED T E RMI N A L UNIT W I TH
SENS IBLE C OO LING C OI L
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IOM LSC
Warnings, Cautions and Notices
WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and airconditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted oraltered equipment by
an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on
the tags, stickers, and labels that are attached to the equipment.
Note that warnings, cautions and notices appear at appropriate intervals
throughout this manual. Warnings are provide to alert installing contractors
to potential hazards that could result in death or personal injury. Cautions
are designed to alert personnel to hazardous situations that could result
in personal injury, while notices indicate a situation that could result in
equipment or property-damage-only accidents. Your personal safety and
the proper operation of this machine depend upon the strict observance
of these precautions. Read this manual thoroughly before operating or
servicing this unit.
ATTENTION Warnings, Cautions and Notices appear at appropriate
sections throughout this literature. Read these carefully:
WARNING Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION Indicates a potentially hazardous situation which, if not
avoided, could result in minor or moderate injury. It could also be used to
alert against unsafe practices.
NOTICE Indicates a situation that could result in equipment or propertydamage only
WARNING
WARNING
Personal Protective Equipment (PPE) Required!
Installing/servicing this unit could result in exposure to electrical,
mechanical and chemical hazards.
Before installing/servicing this unit, technicians MUST put on all
Personal Protective Equipment (PPE) recommended for the work
being undertaken. ALWAYS refer to appropriate MSDS sheets and
OSHA guidelines for proper PPE.
When working with or around hazardous chemicals, ALWAYS
refer to the appropriate MSDS sheets and OSHA guidelines
for information on allowable personal exposure levels, proper
respiratory protection and handling recommendations.
If there is a risk of arc or flash, technicians MUST put on all Personal
Protective Equipment (PPE) in accordance with NFPA 70E or other
countryspecific requirements for arc flash protection, PRIOR to
servicing the unit.
Failure to follow recommendations could result in death or
serious injury.
Proper Field Wiring and Grounding Required!
All field wiring MUST be performed by qualified personnel.
Improperly installed and grounded field wiring poses FIRE and
ELECTROCUTION hazards. To avoid these hazards, you MUST
follow requirements for field wiring installation and grounding
as described in NEC and your local/state electrical codes. Failure
to follow code could result in death or serious injury.oraltered
equipment by an unqualified person could result in death or serious
injury. When working on the equipment, observe all precautions in
the literature and on the tags, stickers, and labels that are attached
to the equipment.
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Installation Manual-LSC
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Table of Contents
Warnings, Cautions and Notices ................................................................................................................................................. 2
Model Number Descriptions ........................................................................................................................................................ 4
General Information ..................................................................................................................................................................... 6
Pre-Installation
Receiving and Handling .................................................................................................................................................... 7
Shipping Package ............................................................................................................................................................. 7
Receiving Check List ......................................................................................................................................................... 7
Jobsite Storage ................................................................................................................................................................. 7
Installation Preparation .....................................................................................................................................................7
Service Access .................................................................................................................................................................. 8
Pre-Installation Check List ................................................................................................................................................ 8
Components Data ........................................................................................................................................................................ 9
Unit Dimensions ......................................................................................................................................................................... 10
Coil Flange Connections ............................................................................................................................................................ 12
Weights ................................................................................................................................................................................12
Water Coil Pipe Connections ..................................................................................................................................................... 14
Installation Mechanical
Duct Connections ............................................................................................................................................................ 15
uct Work Recommendations .......................................................................................................................................... 15
Hydronic Piping Consideration ....................................................................................................................................... 15
Condensate Drain Connection ........................................................................................................................................ 15
External Insulation Requirements .................................................................................................................................. 15
Installation General - Hanging the Unit .................................................................................................................................... 16
Installation Check List ................................................................................................................................................................ 18
Installation Electric
Unit Wiring Diagrams ..................................................................................................................................................... 19
Supply Power Supply ...................................................................................................................................................... 19
Electric Heater Min-Max KW – Unit size 3 .................................................................................................................... 20
Electric Heater Min-Max KW – Unit size 4 .................................................................................................................... 21
ECM Motor Overview and Setup
Overview ......................................................................................................................................................................... 22
General Information ........................................................................................................................................................ 22
ECM Motor Fan Flow Adjustment .................................................................................................................................. 22
Manual PWM Signal Interface Board ............................................................................................................................ 23
Operation .............................................................................................................................................................. 23
Remote PWM Signal Interface Board ............................................................................................................................ 23
Jumper Setup ....................................................................................................................................................... 24
Input / Output Control Signals ............................................................................................................................. 24
Remote Control Air Balance ................................................................................................................................. 24
Manual Air Balance .............................................................................................................................................. 25
Pre-Startup Checklist ................................................................................................................................................................. 26
Maintenance
Maintenance Procedures ............................................................................................................................................... 27
Air Filter ........................................................................................................................................................................... 27
Inspecting and Cleaning Condensate Pans ................................................................................................................... 27
Coil Maintenance ............................................................................................................................................................ 27
Inspecting and Cleaning Coils .............................................................................................................................. 28
Hydronic Coil Cleaning Procedures ...................................................................................................................... 28
Winterizing the Coil .............................................................................................................................................. 28
Replacing Motors ................................................................................................................................................. 28
Periodic Maintenance Check List ......................................................................................................................... 29
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Installation Manual-LSC
3
IOM LSC
Model Number Description
LSC – Low Profile Series Fan Powered Terminal Unit with Cooling Coil
Digit 14,15,16,17 – Minimum Primary Airflow (cfm)
Following is a complete description of the LSC model number. Each digit
in the model has a corresponding code that identifies specific unit options.
Digit 18,19,20,21 – Maximum Primary Airflow (cfm)
Digit 1, 2, 3, 4 – Unit Type
LSC = Basic Unit
LSCX = Special Unit
Digit 5, 6 – Cabinet Size
03 = Unit size 3
04 = Unit size 4
XX = Special
Digit 7 – Cabinet Configuration
R = Right Hand Control Enclosure
L = Left Hand Control Enclosure
X = Special
Digit 8, 9 – Cabinet Material
2G = 20Ga Galvanized Steel Cabinet
XX = Special
Digit 10 – Cabinet Liner
J = EcoShield Matte faced ½”
L = EcoShield Foil Faced ½”
0 = Fiberglass Dual Density ½”
3 = fiberglass Foil Faced ½”
9 = FiberFree ½”
X = Special
Digit 11 – ECM Motor Power Supply
1 = ECM motor 120V/1Ph/60Hz
2 = ECM Motor 208V/1Ph/60Hz
3 = ECM Motor 277V/1Ph/60Hz
X = Special
Digit 12 – Motor Control
M = Manual Control Board
R = Remote PWM Control
X = Special
Digit 13 – Primary Inlet Size
4 = 4” Diameter
6 = 6” Diameter
8 = 8” Diameter
22 = 16” x 8” Rectangular
XX = Special
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Installation Manual-LSC
Digit 22,23,24,25 – Fan Airflow (cfm)
Digit 26 – Airflow Measuring Sensor
0 = None
3 = Aerocross
X = Special
Digit 27,28,29 – Cooling and Heating coils
200 = 2 Rows Cooling only coil
201 = 2 Rows Cool + 1 Row Heating coil
400 = 4 Rows Cooling only coil
401 = 4 Rows Cool + 1 Row Heating coil
XXX = Special
Digit 30, 31 – Filter (Optional Accessories)
00 = None
F1 = 1 x 1” Filter – NOT Ducted
F2 = 1 x 1” Filter + Spare Filter - NOT Ducted
F3 = 1 x 2” Filter – NOT Ducted
F4 = 1 x 2” Filter + Spare Filter - NOT Ducted
F5 = 1 x 1” Filter – Ducted
F6 = 1 x 1” Filter + Spare Filter - Ducted
F7 = 1 x 2” Filter – Ducted
F8 = 1 x 2” Filter + Spare Filter – Ducted
XX = Special
Digit 32,33 – Motor Fuses ( Optional Accessories)
00 = None
MF = Motor Fuses
XX = Special
Digit 34,35 –Unit Accessories (Optional Accessories)
0 = None
B = Hanger Brackets
Y = Slip & Drive Adaptor (Fan Discharge)
X = Special
Digit 36,37,38,39 – Controller (Optional Accessories)
0000 = None
XXXX = Special
Digit 40,41,42,43 – Damper Actuator (Optional Accessories)
0000 = None
DT01 = Electronic Damper Actuator – Titus
XXXX = Special
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Model Number Description (continued)
Digit 44,45,46,47 – Controls Optional Accessories
0 = None
D = Disconnect Switch (Non Fused)
E = Control Enclosure
G = Dust Tight Control Enclosure
T = Dust Tight Disconnect Switch
X = Special
Digit 48,49,50 – Electric Heaters Type
0 = None
E21 = 208V/1Ph 1Stage
E22 = 208V/1Ph 2 Stages
E23 = 208V/1Ph 3 Stages
E31 = 240V/1Ph 1Stage
E32 = 240V/1Ph 2 Stages
E33 = 240V/1Ph 3 Stages
E41 = 277V/1Ph 1Stage
E42 = 277V/1Ph 2 Stages
E43 = 277V/1Ph 3 Stages
E61 = 208V/3Ph 1Stage
E62 = 208V/3Ph 2 Stages
E63 = 208V/3Ph 3 Stages
E91 = 480V/3Ph 1Stage
E92 = 480V/3Ph 2 Stages
E93 = 480V/3Ph 3 Stages
E21 = 208V/1Ph 1Stage
E22 = 208V/1Ph 2 Stages
E23 = 208V/1Ph 3 Stages
L21 = 208V/1Ph Lynergy PWM
L22 = 208V/1Ph Lynergy 2 Stage
L23 = 208V/1Ph Lynergy 0-10V or 0-20mA
L24 = 208V/1Ph Lynergy 2-10V or 4-20mA
L25 = 208V/1Ph Lynergy Incremental T-stat
L26 = 208V/1Ph Lynergy Binary
L27 = 208V/1Ph Lynergy 3 Point Floating
L31 = 240V/1Ph Lynergy PWM
L32 = 240V/1Ph Lynergy 2 Stage
L33 = 240V/1Ph Lynergy 0-10V or 0-20mA
L34 = 240V/1Ph Lynergy 2-10V or 4-20mA
L35 = 240V/1Ph Lynergy Incremental T-stat
L36 = 240V/1Ph Lynergy Binary
L37 = 240V/1Ph Lynergy 3 Point Floating
L41 = 277V/1Ph Lynergy PWM
L42 = 277V/1Ph Lynergy 2 Stage
L43 = 277V/1Ph Lynergy 0-10V or 0-20mA
L44 = 277V/1Ph Lynergy 2-10V or 4-20mA
L45 = 277V/1Ph Lynergy Incremental T-stat
L46 = 277V/1Ph Lynergy Binary
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L47 = 277V/1Ph Lynergy 3 Point Floating
L61 = 208V/3Ph Lynergy PWM
L62 = 208V/3Ph Lynergy 2 Stage
L63 = 208V/3Ph Lynergy 0-10V or 0-20mA
L64 = 208V/3Ph Lynergy 2-10V or 4-20mA
L65 = 208V/3Ph Lynergy Incremental T-stat
L66 = 208V/3Ph Lynergy Binary
L67 = 208V/3Ph Lynergy 3 Point Floating
L91 = 480V/3Ph Lynergy PWM
L92 = 480V/3Ph Lynergy 2 Stage
L93 = 480V/3Ph Lynergy 0-10V or 0-20mA
L94 = 480V/3Ph Lynergy 2-10V or 4-20mA
L95 = 480V/3Ph Lynergy Incremental T-stat
L96 = 480V/3Ph Lynergy Binary
L97 = 480V/3Ph Lynergy 3 Point Floating
Digit 51,52,53 – Electric Heaters KW rating
1.0 = 1.0 KW
1.5 = 1.5 KW
(Refer to 19 & 20 for available KW rating for alternative
power supply voltages)
Digit 54 – Mercury Contactor
0 = None
B = Mercury Contactor
X = Special
Digit 55 – Electric Heater Disconnect Switch and Fuses
0 = None
C = Fuses
D = Disconnect Switch Door Interlock Fused
E = Disconnect Switch Door Interlock
X = Special
Digit 56, 57, 58 – Electric Heater Accessories
0 = None
F = Secondary Manual Reset Cutout
G = Dust Tight Enclosure
T = Lynergy Discharge Limit Temp Sensor
X = Special
Installation Manual-LSC
5
IOM LSC
General Information
The LSC units are intended for single or multi zone applications with an airflow range of 400 to 1850 CFM. The LSC units incorporate as standard a
Primary Air damper which receives air from a Dedicated Outside Air system (DOAS), high efficiency ECM motor(s) and are available as two-pipe systems
with or without electric heat (one hydronic circuit), four-pipe system (two hydronic circuits) or four-pipe with standby electric heating. The unit mounted
low voltage 24 VAC, 50VA Class II transformer provides low voltage to the ECM motor controls and connections field mounted controller/damper
actuator. See Figure 1 for unit components.
Primary Air Inlet c/w:
Aerocross – Airflow measuring device
Damper Blade
Control Enclosure
EcoShield Liner
ECM Motor
Sensible Cooling Coil
and
Hot Water Coil
DWDI Centrifugal
Blower
Filter MERV8 (Optional)
Electric Heater
(Optional)
Return Air:
Non Ducted (STD)
Ducted Flange (Optional)
Condensate Pan
Figure 1: LSC Unit Major Components (Unit Size 3 shown)
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Installation Manual-LSC
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Pre-Installation
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects and
discharge all motor start/run capacitors before servicing. Follow
proper lockout/ tagout procedures to ensure the power cannot
be inadvertently energized. For variable frequency drives or other
energy storing components provided by Titus or others, refer to the
appropriate manufacturer’s literature for allowable waiting periods
for discharge of capacitors. Verify with an appropriate voltmeter
that all capacitors have discharged. Failure to disconnect power
and discharge capacitors before servicing could result in death
or serious injury.
Receiving and Handling: Upon delivery, inspect all components for
possible shipping damage. See “Receiving Checklist” (below) for
detailed instructions. Titus recommends leaving units and accessories in
their shipping packages/skids for protection and ease of handling until
installation.
Shipping Package: The LSC units are multi packed and ship in pallets for
handling and storage ease. Each Unit has tagging information such as
the model number, sales order number, serial number, unit size, piping
connections, and unit style to help properly locate the unit in the floor plan.
If specified, the unit will ship with tagging designated by the customer.
Receiving Checklist: Complete the following checklist immediately after
receiving unit shipment to detect possible shipping damage.
•• Inspect individual pallets before accepting. Check for rattles, bent
corners, or other visible indications of shipping damage.
•• If a unit appears damaged, inspect it immediately before accepting
the shipment. Manually rotate the fan wheel to ensure it turns freely.
Make specific notations concerning the damage on the freight bill.
Do not refuse delivery.
•• Inspect the unit for concealed damage before it is stored and as soon
as possible after delivery. Report concealed damage to the freight
line within the allotted time after delivery. Check with the carrier for
their allotted time to submit a claim.
•• Do not move damaged material from the receiving location. It is
the receiver’s responsibility to provide reasonable evidence that
concealed damage did not occur after delivery.
•• Do not continue unpacking the shipment if it appears damaged.
Retain all internal packing, cartons, and crate. Take photos of
damaged material.
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•• Notify the carrier’s terminal of the damage immediately by phone and
mail. Request an immediate joint inspection of the damage by the
carrier and consignee.
•• Notify your Titus representative of the damage and arrange for repair.
Have the carrier inspect the damage before making any repairs to
the unit.
•• Compare the electrical data on the unit nameplate with the ordering
and shipping information to verify the correct unit is received.
Jobsite Storage: This unit is intended for indoor use only. Store the unit
indoors to protect the unit from damage due to the elements. If indoor
storage is not possible, make the following provisions for outdoor storage:
1. Place the unit(s) on a dry surface or raised off the ground to assure
adequate air circulation beneath unit and to assure that no portion of
the unit contacts standing water at any time.
2. Cover the entire unit with a canvas tarp only. Do not use clear, black
or plastic tarps as they may cause excessive moisture condensation
and equipment damage.
Installation Preparation: Before installing the unit, consider the following
unit location recommendations to ensure proper unit operation.
1. Clearances: Allow adequate service and code clearances as
recommended in “Service Access” (the next section). Position the
unit and skid assembly in its final location.
2. Structural support: Ensure the structural support is strong enough to
adequately support the unit. The installer is responsible for supply
support rods for installation of ceiling units.
3. Level: To ensure proper unit operation, install the unit level (zero
tolerance) in both horizontal axes. Failure to level the unit properly
can result in condensate management problems, such as standing
water inside the unit.
4. Condensate line & piping: Consider coil piping and condensate drain
requirements. Verify condensate line is continuously pitched 1 inch
per 10 feet of condensate line run to adequately drain condensate.
5. Wall & ceiling openings: concealed units require wall/ ceiling
openings. Refer to submittal for specific dimensions before
attempting to install. Concealed units must meet the requirements of
the National Fire Protection Association (NFPA) Standard 90A or 90B
concerning the use of concealed ceiling spaces as return air plenums.
Refer to the submittal for specific dimensions of ceiling openings.
Installation Manual-LSC
7
IOM LSC
Pre-Installation (continued)
Service Access: Service access is available from the bottom and sides
of the units. Units have removable bottom and side panels to allow
access into the unit. See Figure 2 for recommended service and operating
clearances. Units have front or back piping connections. Reference piping
locations by facing the front of the unit (airflow discharges from the front).
The control panel is always on the opposite the piping.
Note:
PRE-INSTALLATION CHECKLIST
Complete the following before beginning unit installation.
•• Verify the unit size and tagging with the unit nameplate.
•• Make certain the ceiling is solid, and sufficient to support the unit
and accessory weights. See “Dimensions and Weights” section.
•• Allow minimum recommended clearances for routine maintenance
and service. Refer to unit submittals for dimensions.
1. Right Hand unit shown. Control enclosure dictates the handing of
the unit.
2. Condensate Pan may be removed from the front or rear of the unit.
•• Allow 4’ of straight duct before the first takeoff or before the discharge
ductwork makes any turns.
3. All LSC units are installed with removable bottom access panels.
Figure 2
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Installation Manual-LSC
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Components Data
Unit
Cooling Coil Data
03
04
2.1875
2.1875
2 Row
36 x 9 5/8 x 8 3/4
36 x 9 5/8 x 8 3/4
4 Row
36 x 9 5/8 x 8 3/4
36 x 9 5/8 x 8 3/4
2 Row
1.75
1.75
4 Row
3.5
3.5
Fin Per Inch
10 FPI
10 FPI
Face Area – ft2
2.1875
2.1875
36 x 9 5/8 x 8 3/4
36 x 9 5/8 x 8 3/4
0.875
0.875
1
2
10 5/8 x 8 7/8
10 5/8 x 8 7/8
1
2
1 x 1/3 HP
1 x 1/3 HP
2
2
20 x 10 (each)
20 x 10 (each)
Type
Pleated
Pleated
Filtration Efficiency
MERV 8
MERV 8
Face Area (ft2)
L x D x H (in)
Volume (US Gal)
Heating Coil Data
1 Row
Volume – US Gal
1 Row
Fan / Motor Data
Fan Quantity
Size – Dia(in) x Width (in)
Motor Quantity
Motor Power (HP)
Filter Data
Quantity
Size L x H (Nominal in)
Note: Filter dimensions are nominal dimensions
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Installation Manual-LSC
9
IOM LSC
Dimensions
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Installation Manual-LSC
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Dimensions (continued)
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Installation Manual-LSC
11
IOM LSC
Coil Flange Connections
Weights
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Installation Manual-LSC
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Unit Labels
Each unit will have two main labels attached to the casing.
The FAN UNIT label lists:
Model Number
Model Number Description
Unit Power Supply requirements
Motor Horsepower
Full Load Amps
Electric Heater Power Supply requirements
Power – KW
Amperage consumption
Minimum Circuit Amps
Max Recommended Fuse
NOTICE
Read all labels on a typical unit, before beginning installation.
The AIR FLOW label lists:
Model Number
Unit Size
Factory Order Number
TAG / Location - indicates the engineer’s planned location for the unit
to be installed.
There may be other labels attached to the unit, as options or codes
may require.
If you have any questions, please contact the local TITUS Representative
for clarification. Have the key points from the Air Flow label available for
reference before calling.
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Installation Manual-LSC
13
IOM LSC
Water Coil Connections
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Installation Manual-LSC
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Installation - Mechanical
DUCT CONNECTIONS
PIPING CONSIDERATIONS HYDRONIC COIL PIPING
Install all air ducts according to National Fire Protection Association
standards for the Installation of Air Conditioning and Ventilating Systems
(NFPA 90A and 90B). Install all air ducts according to the National Fire
Protection Association standards for the “Installation of Air Conditioning
and Ventilation Systems other than Residence Type (NFPA 90A) and
Residence Type Warm Air Heating and Air Conditioning Systems
(NFPA 90B).
Before installing field piping to the coil, consider the following:
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects and
discharge all motor start/run capacitors before servicing. Follow
proper lockout/ tagout procedures to ensure the power cannot
be inadvertently energized. For variable frequency drives or other
energy storing components provided by Titus or others, refer to the
appropriate manufacturer’s literature for allowable waiting periods
for discharge of capacitors. Verify with an appropriate voltmeter
that all capacitors have discharged. Failure to disconnect power
and discharge capacitors before servicing could result in death
or serious injury.
The unit’s duct connections varies dependent on options ordered. Titus
recommends using galvanized sheet metal ductwork with the LSC units.
All duct connections should be sealed and fasten with sheetmetal screws.
Note: Do not run screws through the removable front panels.
DUCTWORK RECOMMENDATIONS
Follow the general recommendations listed below when installing
ductwork for the unit.
1. Discharge ductwork should run in a straight line, unchanged in size or
direction, for a minimum of 4’.
•• Coil connections can be 5/8-inch O.D. (or 1/2-inch nominal) or 7/8inch O.D. (or ¾-inch nominal) sweat copper connections.
•• The supply and return piping should not interfere with the auxiliary
drain pan or condensate line connection.
•• Supply connection should always be at the bottom of the coil and
return at the top.
•• An Air Vent valve must be installed at the highest point of the water
coil to allow removal of “air pockets” inside the coil.
•• The installer must provide adequate piping system filtration and
water treatment.
•• Solder the joints using bridgit lead-free solder (ASTM B32-89) to
provide a watertight connection. Avoid overheating factory soldered
joints when soldering field connections to the coil to prevent leakage
from occurring.
•• Insulate all piping to coil connections as necessary after connections
and pressure test are complete.
Note: When installing a field piping package in a LSC unit, allow sufficient
room to remove the auxiliary drain pan.
CONDENSATE DRAIN CONNECTION (IF INSTALLED)
1. De-burr the pipe end before making the connection to the drain pan.
2. Connect a 7/8-inch O.D. copper pipe or tube, with a 0.20 inch wall
thickness, to the auxiliary drain pan. This should be a mechanical
connection that allows easy removal of the auxiliary drain pan when
servicing the piping end pocket.
3. Slide the copper pipe over the drain pan nipple and tighten the collar
on the pipe with a hose clamp (installer supplied).
2. When making duct turns, placing takeoffs and transitions avoid
sharp turns and use proportional splits, turning vanes, and air scoops
when necessary.
Maintain a continuous drain line pitch of one inch per ten feet of drain
line run to provide adequate condensate drainage. Extend the drain line
straight from the drain pan a minimum distance of six inches before
making any turns. The installer must provide proper support for the drain
line to prevent undue stress on the auxiliary drain pan.
3. When possible, construct, and orient supply ductwork turns in the
same direction as the fan rotation.
Note: The installer is responsible for adequately insulating field piping.
See the “External Insulating Requirements” section for more information.
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Installation Manual-LSC
15
IOM LSC
Installation - Mechanical (continued)
EXTERNAL INSULATING REQUIREMENTS
Insulate and vapor seal surfaces colder than surrounding air dew-point to
prevent unplanned condensation. Titus recommends field-insulation of the
following areas to prevent potential condensate problems:
1. Supply and return water piping connections
2. Condensate drain lines and connections
3. Fresh air intake duct connections
4. Discharge duct connections
Installation - General
INSTALLING THE UNIT
Follow the procedures below to install the unit properly. Refer to
“Dimensions and Weights,” Section for specific unit dimensions and
mounting hole locations.
NOTICE
Electrical Wiring!
Do not allow electrical wire to fall between the unit and installation
surface. Failure to comply may result in electrical shorts or difficulty
accessing wires.
NOTICE
Motor Overload!
All unit panels and filters must be in place prior to unit startup.
Failure to have panels and filters in place may cause motor overload.
Install horizontal units suspended from the ceiling using metal straps or
the optional Hanging Brackets located on the top of the unit. The hanger
holes allow a maximum shank size of 1/2-inch diameter threaded rods or
lag screws (installer provided).
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Installation Manual-LSC
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Installation - General (continued)
Note: Follow the requirements of National Fire Protection Association
(NFPA) Standard 90A or 90B, concerning the use of concealed ceiling
spaces as return air plenums.
Follow the installation procedure below.
1.
Prepare the ceiling opening for recessed units. Reference the unit
submittals for dimensions.
2. Position and install the suspension rods or a suspension device
(supplied by installer) according to the unit model and size in
“Dimensions and Weights,”
3. Level the unit by referencing the chassis end panels. Adjust the
suspension device.
4. Complete piping and wiring connections, in addition to any necessary
ductwork as instructed in the following sections.
5. Install the bottom panel before starting the unit.
6. If installed ensure condensate drain line is pitched one inch per ten
feet of pipe away from the LSC unit
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Installation Manual-LSC
17
IOM LSC
Installation Checklist
WARNING
7. Check field sweat connections for leaks and tighten the valve stem
packing, and piping package unions if necessary.
Hazardous Voltage w/Capacitors!
8. Install condensate drain line connections if required.
Disconnect all electric power, including remote disconnects and
discharge all motor start/run capacitors before servicing. Follow
proper lockout/tagout procedures to ensure the power cannot
be inadvertently energized. For variable frequency drives or other
energy storing components provided by Trane or others, refer to the
appropriate manufacturer’s literature for allowable waiting periods
for discharge of capacitors. Verify with an appropriate voltmeter
that all capacitors have discharged. Failure to disconnect power
and discharge capacitors before servicing could result in death
or serious injury.
9. Pitch condensate drain line away from LSC unit one-inch drop per
ten feet of pipe.
NOTICE
Unit Leveling!
10. Complete all necessary duct connections.
11. Install the filed supplied controls.
12. Complete all interconnection wiring.
13. Connect electrical supply power according to the NEC and unit wiring
diagrams.
14. Remove any miscellaneous debris, such as sheetrock dust, that may
have infiltrated the unit during construction.
15. Replace the air filter (if installed) as required.
The unit must be installed level (zero tolerance) in both horizontal
axis for proper operation.
The following checklist is only an abbreviated guide to the detailed
installation procedures given in this manual. Use this list to ensure all
necessary procedures are complete. For more detailed information, refer
to the appropriate sections in this manual.
1. Inspect the unit for shipping damage.
2. Level installation location to support the unit weight adequately.
Make all necessary ceiling openings to allow adequate air flow and
service clearances.
3. Ensure the unit chassis is installed level.
4. Verify that wall and ceiling openings are properly cut per the unit
submittals.
5. Verify that installation of units meets the national Fire Protection
Association (N.F.P.A.) Standard 90A or 90B concerning the use of
concealed ceiling spaces as return air plenums. Verify correct ceiling
opening dimensions on unit submittals. Secure the unit and any
accessory items properly to the ceiling support rods.
6. Complete all piping connections correctly.
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Installation Manual-LSC
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Installation - Electrical
UNIT WIRING DIAGRAMS
Specific unit wiring diagrams, based on unit options ordered, are
provided inside each unit and can be easily removed for reference. Use
these diagrams for connections or trouble analysis. Wiring diagrams are
attached on the inside of the Control enclosure
SUPPLY POWER WIRING
Refer to the unit nameplate to obtain the minimum circuit ampacity
(MCA) and maximum fuse size (MFS) or maximum circuit breaker (MCB) to
properly size field supply wiring and fuses or circuit breakers.
Recommendation: Do not bundle or run interconnection wiring in parallel
with or in the same conduit with any highvoltage wires (110 V or greater).
Exposure of interconnection wiring to high voltage wiring, inductive loads,
or RF transmitters may cause radio frequency interference (RFI). In addition,
improper separation may cause electrical noise problems. Therefore, use
shielded wire (Belden 83559/83562 or equivalent) in applications that
require a high degree of noise immunity. Connect the shield to the chassis
ground and tape at the other end.
Note: Do not connect any sensor or input circuit to an external
ground connection.
Refer to the unit operating voltage listed on the unit wiring schematic,
submittal, or nameplate. Reference the wiring schematic for specific
wiring connections.
Note: All field wiring should conform to NEC and all applicable state
and local code requirements. The control enclosure is always on the end
opposite the piping connections. Access the control box by removing the
two screws that secure the front cover. This will allow the panel to be
removed, to provide access to the electrical components.
NOTICE
All fan motors are single phase, same voltage as electric coil (when
supplied), with exception that 277 V motors are used with 480V, 3 phase
coils (4 wire wye).
Use Copper Conductors Only!
FLA = Full Load Amperage, as tested in accordance with UL 1995
Unit terminals are not designed to accept other types of conductors.
Failure to use copper conductors may result in equipment damage.
Minimum Circuit Ampacity (MCA) and Maximum Fuse Size (MFS)
Calculations for Fan-Coils with Single Phase Electric Heat
If the unit does not have a disconnect switch, the power leads and ground
terminal are situated inside the high voltage compartment in the control
enclosure. If the unit has a disconnect switch, power connections are done
directly to the disconnect switch located in the control enclosure.
NOTICE
Equipment Damage!
Unit transformer provides power to the LSC unit only. Field
connections directly to the transformer may create immediate or
premature unit component failure.
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Heater amps = (heater kW x 1000)/heater voltage
MCA = 1.25 x (heater amps + all motor FLAs)
MFS type circuit breaker = (2.25 x largest motor FLA) + second motor FLA
+ heater amps (if applicable)
Select a standard fuse size or circuit breaker equal to the MCA. Use the
next larger standard size if the MCA does not equal a standard size.
Standard fuse sizes are: 15, 20, 25, 30, 35, 40, 45, 50, 60 amps.
LSC Unit electric heat MBh = (heater kW)*(3.413)
Installation Manual-LSC
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IOM LSC
Installation - Electrical (continued)
Note:
1. All KW’s must remain within Minimum and Maximum range shown for each unit size and step.
2. Electric Coils are attached to the unit discharge and wired to a control panel for “ Single Point” electric connections.
3. Electric Coils only include:
• Automatic reset thermal cutout (one per step)
• Positive Pressure airflow switch
• Magnetic Contactor per step for Analog and Digital controls and PE switch for each step for pneumatic units.
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TAF-L Underfloor Perimeter System
Note:
1. All KW’s must remain within Minimum and Maximum range shown for each unit size and step.
2. Electric Coils are attached to the unit discharge and wired to a control panel for “ Single Point” electric connections.
3. Electric Coils only include:
• Automatic reset thermal cutout (one per step)
• Positive Pressure airflow switch
• Magnetic Contactor per step for Analog and Digital controls and PE switch for each step for pneumatic units.
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Installation Manual-LSC
21
IOM LSC
ECM Overview and Setup
OVERVIEW
This section addresses the Titus ECM motor which is standard on all
LSC units. The ECM motor provides outstanding comfort, safety, and
performance with greatly reduced energy consumption compared to
traditional units with permanent split capacitance AC motors and with
proper installation and operation the units will provide a long service life.
The ECM motor provides a high degree of flexibility and configurability,
with the simplicity of customized factory configurations appropriate to most
installations. Very little intervention is needed by service and installation
personnel in most applications; however, installers must read through this
entire section before beginning installation of the new equipment. This
literature focuses on unit motors and associated controls.
General Information
There are four primary components that enable the ECM technology on
the LSC units:
ECM MOTOR FAN FLOW ADJUSTMENT
NOTICE
Before starting the fan motor, follow steps 1 and 2
1. Discharge ductwork should be connected. The minimum
recommended discharge static pressure is 0.2” wg. Be sure that any
fan packing is removed from units prior!
2. All foreign materials should be removed from duct system. Filters
should be installed where required.
3. The LSC unit is equipped with either a manual control or a remote
control PWM fan speed controller, mounted on the side of the line
voltage control enclosure.
1. Titus ECM Motor
2. ECM Engine Board
3. PWM Controllers
4. Inductors
The motors and modules are combined as a system, and cannot work
without each other.
A - Remote Signal PWM Controller
ECM motors shipped with remote PWM controller require a signal from
the DDC controller to control fan speed.
B- Manual/Unit PWM Controller
ECM motors with manual PWM controllers are shipped from the factory
at design CFM when provided. Otherwise motors are shipped at motor full
speed setting.
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ECM Overview and Setup (continued)
4. Allow motor to run-in at least 15 minutes before adjusting speed.
During initial run-in, check ductwork connections for leaks and
repair if necessary. (Do not adjust fan speed down if ductwork is not
connected).
5. Set the unit to full heating (maximum induction). Adjust and set
remote balancing dampers, if present. Adjust the speed control
to deliver the required CFM by measuring air quantity at the
room outlets.
6. Proceed to primary air adjustment procedure, detailed in control
installation information. Fan should be re-adjusted with primary air
and ventilation air at maximum setpoint, to insure that no supply air
is discharged at the induction port.
MANUAL / UNIT PWM SIGNAL INTERFACE BOARD
The Manual PWM interface board allows accurate manual adjustment
and monitor of fan with the GE Electric ECM Motor. The Manual interface
board features a 4 digit LED numerical display to allow easy reading in
dark spaces. Watch the display and set the flow index with a screwdriver
adjust. Twenty seconds later, the display shows the motor RPM. Then, the
display periodically alternates between the flow index and motor RPM.
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Operation
GE ECM™ motors configured for Vspd operation are factory configured for
external torque or airflow adjustment. A numerical flow index accurately
adjusts the fan to the desired torque or airflow. The flow index is a number
from 0-100 having a linear relationship to the minimum to maximum torque
or airflow range specified by Titus. Refer to the fan specifications, data and
charts to convert the flow index to torque or mass airflow. The Manual
PWM interface board allows local on/off and fan airflow adjustment.
Rotating a single screwdriver adjuster changes the variable output
signal to the motor from off to full output. While rotating the adjuster, a
numerical flow index is locked on the illuminated numerical display. After
adjustment, the display shows fan RPM.
REMOTE PWM SIGNAL INTERFACE BOARD DETAILS
The remote interface allows industry standard 0-10Vdc automation signals
to adjust and monitor General Electric’s ECM Motor.
The interface board provides remote adjustment of the ECM output from
0% to 100% of the programmed control range. A signal lamp on the control
continuously flashes out the flow index2. Instruments are not required to
read the flow index. A 0-10Vdc signal connects RPM to the automation
control. Jumpers allow the Interface to be configured for 0-10Vdc
Installation Manual-LSC
23
IOM LSC
ECM Overview and Setup (continued)
automation signal, 2-10Vdc automation signal, and manual/override
control. The interface can also be used for stand-alone manual control.
The green lamp continuously indicates the flow index. After a pause, the
lamp flashes out the tens digit, then the units digit of a number between 1
and 99. Long flashes represent the tens digit, and short flashes represent
the units digit. For example, a flow index of 23 flashes two longs, then
three shorts.
Two extra long flashes indicate a flow index of 0. An extra long flash and
ten short flashes indicates a flow index of 100. The lamp flashes the signal
that was present when the flash sequence started.
Turning Adjust controls the ECM motor to the manually adjusted setting.
The manual setting has authority for 15 minutes.Set the unit to full heating
(maximum induction). Adjust and set remote balancing dampers, if present.
Adjust the speed control to deliver the required CFM by measuring air
quantity at the room outlets.
REMOTE PWM SIGNAL INTERFACE BOARD DETAILS
Jumpers
M: Jumper enables manual override. Manual override is overridden when
the 0-10V automation signal exceeds 0.2Vdc.
Manual override controls the motor before Building Automation System
(BAS) is installed, or when BAS fails. Without the “M” jumper, manual
override is enabled whenever Adjust is turned. It is disabled by causing
the Interface board to turn the motor off/on 5 times while signal is greater
than 0.1Vdc.
P: Jumper provides ON/OFF control by switching the
motor’s “GO” control line when the input signal drops
below the 2 volt (4 mA) operating point. without the
jumper, turn power to the interface board + On/Off to
control motor On/Off.
R: Jumper reverses Adjust rotation so adjustment is correct from the
component side of the board.
Rotating Adjust changes the Flow Index from 0 to 100.
Input / Output Control Signals
The “P” jumper also allows manual on/off control.
“Opt” Configuration
0-10 Vdc = 1% to 100%
“P” Configuration
2-10Vdc = 0-100%
4-20mA = 0-100%
ON/OFF Control Between1 & 2
Vdc (2 & 4 mA)
RPM Signal
0-10 Vdc, 5 mA max. = 0 to 2,000
RPM in 10 RPM steps
Outputs Go & VSpd
22Vdc @ 5mA
Opt: The Opt. space has no function. The space may be used to store an
unused jumper.
DDC Control - Air Balance
If the DDC Controller signal is already installed, air balance can be achieved
using the DDC Controller software tools. Please notice that a control signal
less than 0.2Vdc may put the interface board into manual override. Avoid
setting the DDC signal to less than 0.2Vdc.
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ECM Overview and Setup (continued)
WARNING
Turning Adjust potentiometer locks out the BAS signal for 15 minutes
Cycle power ON/OFF for faster lockout removal.
Manual Air Balance
The interface board can be manually adjusted before the DDC Controller
signal is available. The balancer’s manual adjustment has authority until
automation is connected.
Air Balancer
1. Use Adjust to set the air flow. This adjustment will have authority for
at least 15 minutes.
2. Read the flashing green light and record the flow index on the air
balance report.
DDC Integrator
1. Set the Signal to 0Vdc to invoke manual override.
2. Record the RPM on the air balance report.
3. Enter the flow index the air balancer entered on the air
balance report.
4. Observe the RPM is at or near the RPM observed in step 2.
5. Cycle the motor on/off 5 times. This clears the manual override
function unless the “M” jumper is in place.
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Installation Manual-LSC
25
IOM LSC
Pre Start-Up
PRE-STARTUP CHECKLIST
COMPONENT OVERVIEW
Complete this checklist after installing the unit to verify all recommended
installation procedures are complete before unit startup. This does not
replace the detailed instructions in the appropriate sections of this manual.
Disconnect electrical power before performing this checklist. Always read
the entire section carefully to become familiar with the procedures.
1. Ensure the fan rotates freely in the correct direction.
2. Ensure all unit access panels are in place.
3. Verify that a clean air filter is in place.
UNIT PIPING
WARNING
1. Properly vent the hydronic coil to allow water flow through the unit.
Hazardous Voltage w/Capacitors!
2. Tighten all pipe connections adequately.
Disconnect all electric power, including remote disconnects and
discharge all motor start/run capacitors before servicing. Follow
proper lockout/ tagout procedures to ensure the power cannot
be inadvertently energized. For variable frequency drives or other
energy storing components provided by Trane or others, refer to the
appropriate manufacturer’s literature for allowable waiting periods
for discharge of capacitors. Verify with an appropriate voltmeter
that all capacitors have discharged. Failure to disconnect power
and discharge capacitors before servicing could result in death
or serious injury.
3. Set water flow to the unit properly if unit piping has the circuit
setter valve (installed by others).
RECEIVING
Inspect unit and components for shipping damage. File damage claims
immediately with the delivering carrier.
•• Check unit for missing material. Look for ship-with options and
sensors that may be packaged separately from the main unit.
4. Check strainers (if installed by others) for debris after apply
system water.
5. Verify the condensate drain piping is complete for the unit
drain pan.
6. Ensure the drain pan and condensate line are not obstructed.
Remove any foreign matter that may have fallen into the drain pan
during installation.
ELECTRICAL
•• Check all electrical connections for tightness.
Note: Some circumstances may require the unit to run before building
construction is complete. These operating conditions may be beyond the
design parameters of the unit and may adversely affect the unit.
•• Check nameplate unit data so that it matches the sales order
requirements.
UNIT LOCATION
1. Ensure the unit location is adequate for unit dimensions, ductwork,
piping, and electrical connections.
2. Ensure access and maintenance clearances around the unit
are adequate.
UNIT MOUNTING
1. Ensure unit is installed level.
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Maintenance
MAINTENANCE PROCEDURES
Perform the following maintenance procedures to ensure proper
unit operation.
NOTICE
Replace All Panels and Filters Properly! All unit panels and filters
must be in place prior to unit startup. Failure to have panels and
filters in place could result in equipment damage.
WARNING
Live Electrical Components!
INSPECTING AND CLEANING DRAIN PANS
During installation, testing, servicing and troubleshooting of
this product, it may be necessary to work with live electrical
components. Have a qualified licensed electrician or other
individual who has been properly trained in handling live electrical
components perform these tasks. Failure to follow all electrical
safety precautions when exposed to live electrical components
could result in death or serious injury.
Clean the unit drain pan to ensure that any potential condensate drains.
Check the condensate drain pan and drain line to assure the condensate
drains properly at least every six months or as dictated by operating
experience. If evidence of standing water or condensate overflow exists,
immediately identify and remedy the cause. Clean the drain pans of any
moisture or debris.
WARNING
Disconnect all electric power, including remote disconnects and
discharge all motor start/run capacitors before servicing. Follow
proper lockout/ tagout procedures to ensure the power cannot
be inadvertently energized. For variable frequency drives or other
energy storing components provided by Trane or others, refer to the
appropriate manufacturer’s literature for allowable waiting periods
for discharge of capacitors. Verify with an appropriate voltmeter
that all capacitors have discharged. Failure to disconnect power
and discharge capacitors before servicing could result in death
or serious injury.
AIR FILTERS
Change or clean air filters at least twice a year. Filters require more
frequent care under high load or dirty air conditions since a clogged filter
reduces airflow. Pleated media filters are available for all units.
Depending on the Filter Removal Option installed in the unit, filters can be
removed from the unit in two ways:
1. Side removal – from the either side of the coil
2. Bottom removal – from the bottom of the coil side
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COIL MAINTENANCE
Keep coils clean to maintain maximum performance. For operation at its
highest efficiency, clean the coil often during periods of high demand or
when dirty conditions prevail. Clean the coil a minimum of once a year to
prevent dirt buildup in the coil fins, where it may not be visible. Remove
large debris from the coils and straighten fins before cleaning. Remove
filters before cleaning. Clean the coil fins using steam with detergent,
hot water spray and detergent, or a commercially available chemical coil
cleaner. Be sure to rinse coils thoroughly after cleaning.
WARNING
Hazardous Chemicals!
Coil cleaning agents can be either acidic or highly alkaline. Handle
chemical carefully. Proper handling should include goggles or face
shield, chemical resistant gloves, boots, apron or suit as required.
For personal safety refer to the cleaning agent manufacturer’s
Materials Safety Data Sheet and follow all recommended safe
handling practices. Failure to follow all safety instructions could
result in death or serious injury.
Inspecting and Cleaning Coils
Coils become externally fouled as a result of normal operation. Dirt on the
coil surface reduces it’s ability to transfer heat that can result in comfort
problems, increased airflow resistance and thus increased operating
energy costs. If the coil surface dirt becomes wet, which commonly
Installation Manual-LSC
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IOM LSC
Maintenance (continued)
occurs with cooling coils, microbial growth (mold) may result, causing
unpleasant odors and serious health-related indoor air quality problems.
Inspect coils at least every six months or more frequently as dictated by
operating experience. Cleaning frequently is dependent upon system
operating hours, filter maintenance, and efficiency and dirt load. Follow
the suggested methods in the following paragraphs.
Replacing Motors
Motors are attached to the fan Blower with screws at the rear of the
motors. Fan wheels are attached with Allen screws on the fan hubs. In
most applications, it is necessary to remove the fan blower to change out
the motor. The fan blower is easily removable, with screws on the top and
bottom edges of fan blower.
Hydronic Coil Cleaning Procedure
1. Disconnect all electrical power to the unit.
2. Don the appropriate personal protective equipment (PPE).
3. Access both sides of the coil.
4. Use a soft brush to remove loose debris from both sides of the coil.
5. Use a steam cleaning machine, starting from the top of the coil and
working downward. Clean the leaving air side of the coil first, then
the entering air side. Use a block-off to prevent steam from blowing
through the coil and into a dry section of the unit.
6. Repeat step five as necessary. Confirm that the drain line is open
following completion of the cleaning process.
7. Allow the unit to dry thoroughly before putting the system back
into service.
NOTICE
Heavy Object!
Support the Fan Blower when removing it from the unit. Failure
to properly support Fan Blowerd may result in minor to moderate
personal injury.
Work Instruction Steps
In general, replacement of a motor needs to be carried out as follows:
1. Remove front panels of unit.
2. Free the motor and crossover harnesses from the fan board, by
unplugging the two electric multi plugs from the motor.
8. Straighten any coil fins that may be damaged with a fin rake.
9. Replace all panels and parts and restore electrical power to the unit.
Winterizing the Coil
Make provisions to drain coils that are not in use, especially when
subjected to freezing temperatures. To drain the coil, blow the coil out with
compressed air. Next, fill and drain the tubes with full-strength ethylene
glycol several times. Drain the coil as completely as possible.
NOTICE
28
Coil Freeze-up Damage!
3. Remove the fan housing with the motor and loosen fan Allen screw
on the shaft.
Failure to properly drain and vent coils when not in use during
freezing temperatures may result in coil freeze-up damage.
4. Unscrew the motor from the fan housing and remove.
Installation Manual-LSC
5. Insert the replacement motor.
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Maintenance (continued)
PERIODIC MAINTENANCE CHECKLISTS
The following check list provides the recommended maintenance schedule
to keep the unit running efficiently.
Monthly Maintenance
1. Inspect unit air filters. Clean or replace if airflow is blocked or if filters
are dirty.
2. Check the drain pans s to be sure the pans are clean and do not
impede the potential condensate flow through the drain line.
Annual Maintenance
Check and tighten all set screws, bolts, locking collars and sheaves.
1. Inspect the unit liner clean or repair to provide unit protection.
2. Inspect the fan wheel and housing for damage. Rotate the fan wheel
manually to be sure movement is not blocked by obstructions.
3. Inspect the coil fins for excessive dirt or damage. Remove dirt and
straighten fins.
4. Clean and tighten all electrical connections.
5. Inspect the primary air damper and ensure that it rotates freely from
o to 100% open.
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Installation Manual-LSC
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IOM LSC
Notes
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Installation Manual-LSC
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Notes
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Installation Manual-LSC
31
605 Shiloh Rd
Plano TX 75074
ofc: 972.212.4800
fax: 972.212.4884
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