PACKAGE UNITS
GPG 10 AND 12 SEER
TECHNICAL SUPPORT
888-593-9988
MARK STOKES
713-861-2500 EXT. 630
Model Number Chart
G
BRAND
G = Goodman
PG
Description
Packaged Gas
10
24
EFFICIENCY NOMINAL CAPACITY
10 = 10 SEER
24=2 Tons
12 = 12 SEER
30=2 1/2 tons
36=3 Tons
42=3 1/2 Tons
48=4 Tons
60=5 Tons
045
HEATING INPUT
045=45 MBTUH (INPUT)
070=70 MBTUH (INPUT)
090=90 MBTUH (INPUT)
115=115 MBTUH (INPUT)
140=140 MBTUH (INPUT)
1
A
VOLTAGE
Revision
1 = 208-230/1/60 A = Initial
3 = 208-230/3/60 B = Rev 1
C = Rev 2
SERIAL NUMBER
09 is for the month it was built
0409456678
04 is for the year it was built
12 & 10 SEER Packaged Gas Electric
Fits in a standard size Pickup!
12 & 10 SEER Packaged Gas Electric
Cooling Features:
• Convenient access panels to the compressor
• High-efficiency Scroll and Energy-efficient reciprocating
compressor.
• Copper tube/aluminum fin coil.
• Liquid line filter drier.
• Fully charged R-22 system.
• Louvered Guard Protection
10 & 12 SEER Packaged Gas Electric
Control Features:
• Convenient access panels to the Evaporator coil and control section.
• Direct spark ignition system, which includes a microprocessor based control
for the entire ignition sequence, all blower operation and all safety circuits.
• Diagnostic Indicator provided for trouble shooting system faults.
Design Objectives
•
•
•
•
•
•
2 – 5 ton Single Phase
3, 4 & 5 ton Three Phase
12 &10 SEER Cooling, 80% AFUE Heating
Capable of expansion to higher SEER ratings
Convertible
Easy Access Service Panels
Architectural Gray
12 & 10 SEER Packaged Gas Electric
Heating Features:
• Convenient access panels to the heating section.
• Redundant gas valve, natural gas and easy conversion to propane.
• Power-assisted combustion.
• L.P. Conversion Kit Available
• 12 & 10 SEER units offer a durable, T-140 Aluminized Steel tubular heat exchanger.
•California Low Nox Approved
Wrinkle-bend Process
We begin with T-140 Aluminized Steel tubes
• Manufacturing stress including
wall-thinning is minimized
• Wrinkles are placed precisely
where we want them
• Wrinkles promote turbulence
to aid heat transfer and
efficiency
Dual-diameter/Muffler-joint
We apply a patented process to join tubes
• 1-3/4” diameter fits
inside a 1-1/4” diameter
• Tubes are joined with a
proprietary process
• Velocity of combustion
products is optimized
• Efficiency is maximized
Tubular Technology Renders Clamshell Obsolete
800°F 1,000°F
300°F
300°F
300°F
300°F



1,000°F
110°F
Non-uniform thermal growth
Eyelets can pop
Stress-cracks can form
 Tube can grow in length and diameter
 Growth is uniform at the cross-section
 No opportunity for stress-cracks
INSTALLATION
CLEARENCE FROM
COMBUSTIBLE MATERIALS
CURB INSTALLATION
RIGGING
PIPING
CONDENSATE DRAIN
FLUE HOOD & BUG SCREEN
12 & 10 SEER Packaged Gas Electric
McDaniel Metals
Part Number
PGC101/102
PGED101
PGED102
PGEH101
PGEH102
PGMDD101
PGMDD102
PGMDH101
PGMDH102
PGMDH103
PGMDMD101
PGMDMD102
PGMDMH101
PGMDMH102
PGMDMH103
SQRPG101
SQRPG102
PGFR101/102
Description
Roof Curb
Downflow Economizer 2 - 3 1/2 Ton
Downflow Economizer 4 - 5 Ton
Horizontal Economizer 2 - 3 1/2 Ton
Horizontal Economizer 4 - 5 Ton
Manual 25% Fresh Air Damper 2 - 3 1/2 Ton Downflow Application
Manual 25% Fresh Air Damper 4 - 5 Ton Downflow Application
Manual 25% Fresh Air Damper 2 - 3 1/2 Ton Horizontal Application
Manual 25% Fresh Air Damper 3 - 3 1/2 Ton Horizontal Application
Manual 25% Fresh Air Damper 4 - 5 Ton Horizontal Application
Motorized 25% Fresh Air Damper 2 - 3 1/2 Ton Downflow Application
Motorized 25% Fresh 4 - 5 Ton Downflow Application
Motorized 25% Fresh Air Damper 2 - 3 1/2 Ton Horizontal Application
Motorized 25% Fresh Air Damper 3 - 3 1/2 Ton Horizontal Application
Motorized 25% Fresh Air Damper 4 - 5 Ton Horizontal Application
Square to Round Adapter w/ 16" Round Downflow Application 2 - 3 1/2 Ton
Square to Round Adapter w/ 18" Round Downflow Application 4-5 Ton
Internal Filter Rack 2 - 5 Ton
10 & 12 SEER Packaged Gas Electric
Blower Features:
• Convenient access panels to the blower section.
• Filter rack included on 12 SEER large (4 &5 ton) chassis.
• Easy removal of blower with two screws.
• Multi-speed evaporator blower.
• Fully insulated with blankets of fiberglass.
12 & 10 SEER Packaged Gas Electric
Base Features:
• 042 Aluminized Steel Bottom/Base Pan
• 2” High Base Rails
Shipped with four panels
DUST COVER INSTALLATION
RECOMMENDED FILTER SIZES
Electrical
• 208/230 Volt Power connections and 460
Volt available in 5 Ton Cool only model
• Single Phase and Three phase models
available
• Maximum Over current Protection
determined by model
Wiring
• All wiring should be made in accordance
with the National Electrical Code.
• Wire sizes and over current protection should
be determined from the unit nameplate
ampacity.
• Wire sizes should not be smaller than
recommended by these two sources.
• All exterior wiring must be within approved
weatherproof conduit.
• The unit must be permanently grounded in
accordance with local codes.
HIGH VOLTAGE WIRING
LOW VOLTAGE WIRING
CHECKING THE COMPRESSOR
CHECKING CONTACTOR
CHECKING CAPACITOR
COMPRESSOR
NORMINCLATURE
COMPRESSOR DIAGONSTICS
TESTING FOR GROUNDED
COMPRESSOR
FLOW RATER
EVACUATION
HEATING SIDE OF GPG
CHECKING GAS PRESSURE
Manifold Outlet Gas Pressure
Natural…. Min. 3.2” W.C., Max 3.8” W.C.
Propane….Min. 9.7” W.C., Max. 10.3” W.C.
CHECKING BURNERS
Burner
BURNER BOX REMOVAL
CHECKING BURNERS
CHECKING LIMIT SWITCH
Pressure Switch Check
• Meter on AC Voltage Setting ; between
Quick Connect on Pressure Switch and
Ground
• Prior to Operation check for open side of
Pressure Switch (No Voltage Present)
• When Pressure Switch Closes 24 Volts
should be present on N/O side
• Issue: Watch for switch bounce on windy
days
• Issue: Watch for P.S. drop-out for low
pressure
CHECKING PRESSURE SWITCH
CHECKING PRESSURE SWITCH
PRESSURE SWITCH
INDUCED DRAFT BLOWER
Understanding
ECM Motors
Understanding ECM Motors
• What does ECM mean?
• How does the ECM work?
• Variable Speed vs
Constant Volume.
• What is PWM
• How does the ECM sense
static pressure?
• Troubleshooting ECM
motors.
BLOWER MOTOR & HOUSING
Electronic Controls
B18099-18 Control
• B18099-21 Has Green
Diagnostic LED
• B18099-21 Cannot be
used alone; must be used
with B18099-22 Control
• B18099-21 Control is set
up for 50Hz Operation and
for use in Europe (CE Mark)
Control Environment
• +80 to -40 Degrees Celsius (+176 to -40 F)
• 10% to 95% R.H. Non-Condensing
• 98 to 132VAC Line Voltage
• 18 to 30VAC Control Voltage
• Frequency - 60Hz
• UL & cUL Approved
General Functions
• “W” Input On (Call for Heat)
– Checks to see pressure switch open
– Turns on Inducer
– Pressure Switch Closes; 15 Second Pre-Purge
– Starts Sparking & Gas Valve Turns On for 7 Seconds
– Flame Sensed Anytime During Spark
– Gas Valve Stays On
– Blower Comes On after 30 Second Delay
• “W” Input Off (Call for Heat Satisfied)
– Gas Valve De-Energizes Immediately
– Inducer Remains on for 29 Second Post Purge
– Indoor Blower De-Energizes after Selected Blower Off
Delay
General Functions
Continued....
• Single Compressor Mode (Tab is not Broken)
– “Y” Input On (Call for Cooling)
• 3 Minute Anti-Short Cycle Timer from the time the compressor was
last on.
• Cooling Speed Blower after a 7 second delay
– “Y” Input Off (Call for Cool Satisfied)
• Cooling Speed Fan Off after 60 Second Delay
• Dual Compressor Mode (Tab is Broken)
– 1st Stage Compressor is Energized Externally
– “Y” Input On for 2nd Stage Cooling after 7 Second Delay
– “Y” Input Off ; Cooling Speed Fan off after 60 Second Delay
General Functions
Continued....
• “G” Input On (Call For Fan)
– Fan Immediately on Heat Speed
• “G” Input Off
– Fan Immediately Shuts Off
• If “Y” input Occurs During “G”
– Blower Switches to Cooling Speed
• If “W” Occurs During “G”
– Blower off when Heat Blower On Delay Begins
– Continuous Fan Operates while control is in Heat Mode
Lockout
• Test/Speed-Up Bypasses Compressor Short-Cycle Timer
– If Shorted for Over 4 Minutes ; Control Ignores =
Operates Normal
Diagnostic Codes
• Steady On = Normal Operation in Standby
• 1 Flash = Lockout for Ignition Failure or Flame Dropouts
– 3 Trials for Ignition or 5 Flame Losses
• 2 Flashes = Pressure Switch Open with Inducer On
• 3 Flashes = Pressure Switch Stuck Closed with Inducer Off
• 4 Flashes = Limit Switch Open
– Heat Speed Blower and Inducer On Until Limit Closes
– Blower Runs thru Off Delay; Inducer runs thru 29 Second Post-Purge
• 5 Flashes = Flame Detected with Gas Valve Off
– Blower and Inducer Both On Until No Longer Sensed
– Control Locks out But Senses Limit and Flame
– Control is Reset By Removing Power or after 1 Hour Automatically
• 6 Flashes = Compressor Delayed for Short Cycle/Staging Timer
• Status Light Off = Board Hardware Fault
Flame Sense Checking
• Digital Meter set for lowest uA Setting
• Meter in series with Flame Sense Rod Wire
• Control must read a minimum of .5uA during
flame sensing period
• Average current reading is around 3-5uA.
• Control constantly monitors Flame during heating
operation
• Issue: Flame Sense Rod gets corroded ; Clean w/
steel wool
• Issue: Flame Rod not situated in Flame Correctly
Ground Check
• Meter set to Ohms or Resistance Setting
• Place Meter from P1-6 or COM quick
connect to chassis ground
• Reading should be near Zero ohms
• Issue: COM Quick Connect Loose ;
causes board resetting when blower
starts
• Issue: Flame Sensing problems if improper
grounding in system
GPG TROUBLESHOOTING
THEORY OF OPERATION
Control of heating, cooling, and fan functions in
response to a standard thermostat
Direct spark ignition using a microprocessor to control
timing, flame sensing, and ignition retries
Monitoring of system pressure switch and limit switch
Control of gas valve, indoor fan, and induced draft
motor based on the thermostat demand and status of
safety inputs
Control of compressor contactor
Diagnostic indicator to provide information on power to
the control and control status
GPG
TROUBLESHOOTING
Summary of Timing Functions (in seconds)
Function
Signal Name
Delay-On
Delay-Off
Heat Speed
MV (1)
30
120, 135,150 (2)
Cool Speed
Y
7
60
Compressor
Y
60 (3)
180 (4)
Induced Draft
Induced Draft
15 (5)
29
1. Heat speed delay on and off occur only after flame has been sensed and main valve (MV) is
energized
2.
Selectable with jumpers
3. Indicates timing when “Two Stage Comp” tab is broken off, timer becomes delay on make
4. Indicates timing when “Two Stage comp”tab is not broken off, timer becomes compressor lock out
between cycles(I.e. Minimum timing between compressor cycles)
5. Prepurge timing (not delay on )
GPG TROUBLESHOOTING
Inputs
Limit Switch –The limit switch is connected to control pins 4 and 5. The limit switch is
connected is electrically between fused 24 VAC and the thermostat R
Pressure Switch-The pressure switch is connected on pins 6 and 8. The pressure switch
“W and the gas valve relay contacts
Thermostat call for Heat “W”-24 VAC thermostat input. Connection via pin 10
Thermostat call for cool “Y”- 24 VAC thermostat input connections via pin 11
Thermostat call for fan “G”- 24 VAC thermostat inputs. Connection via pin 7
Flame Sense- Open circuit flame sense voltage shall be approximately 100 VAC . The
control requires at least .5 microamperes DC flame current to guarantee flame is sensed
12 & 10 SEER Packaged Gas Electric
Leading Warranties:
• 12 SEER offers an Aluminized Steel Heat Exchanger with a 20Year limited Warranty
and10 Year Limited Warranty on the Compressor and Parts.
• 10 SEER offers an Aluminized Steel Heat Exchanger with a 20Year limited Warranty
and 5 Year Limited Warranty on the Compressor and Parts.