Affix this manual and Users Information Manual adjacent to the unit.
OOLING
U
NITS
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
ATTENTION INSTALLING PERSONNEL
Prior to installation, thoroughly familiarize yourself with this Installation Manual. Observe all safety warnings. During
installation or repair, caution is to be observed.
It is your responsibility to install the product safely and to educate the customer on its safe use.
These installation instructions cover the outdoor
installation of single package gas electric heating and
cooling units. See the Specification Sheet applicable to
your model* for information regarding accessories.
This Forced Air Central Unit Design Complies With
Requirements Embodied in The American National
Standard / National Standard of Canada Shown Below.
ANSI Z21.47•CSA-2.3 Central Furnaces
*NOTE: Please contact your distributor or
our website for the applicable
Specification Sheet referred to in this
manual.
www.goodmanmfg.com
INDEX
REPLACEMENT PARTS ....................................................................................................................................................... 4
ORDERING PARTS .............................................................................................................................................. 4
UNIT LOCATION .................................................................................................................................................................. 5
ALL INSTALLATIONS: ............................................................................................................................................ 5
OOF CURB I NSTALLATIONS ONLY: ........................................................................................................................ 6
R
GENERAL INFORMATION .................................................................................................................................................... 6
GAS PIPING......................................................................................................................................................................... 7
HIGH A LTITUDE DERATE (U.S. INSTALLATIONS ONLY) ............................................................................................... 7
AS PIPING CHECKS .......................................................................................................................................... 8
G
PROPANE GAS INSTALLATIONS ........................................................................................................................................ 8
NIT VOLTAGE ................................................................................................................................................. 10
CIRCULATING AIR AND FILTERS ..................................................................................................................................... 10
NORMAL SEQUENCES OF OPERATION ........................................................................................................................... 12
AN ONLY ...................................................................................................................................................... 12
F
STARTUP, ADJUSTMENTS, AND CHECKS ....................................................................................................................... 12
NTERNAL CONTROL F AILURE ............................................................................................................................ 16
FLAME DETECTEDWITH GAS VALVE CLOSED ..................................................................................................... 16
LOW FLAME SIGNAL ....................................................................................................................................... 16
ACCESSORIES AND FUNCTIONAL PARTS ...................................................................................................................... 18
SHEET METAL A CCESSORIES .............................................................................................................................. 18
UNCTIONAL PARTS .......................................................................................................................................... 18
F
ENERAL INFORMATION ..................................................................................................................................... 18
When reporting shortages or damages, or ordering repair
parts, give the complete unit model and serial numbers as
stamped on the unit’s nameplate.
Replacement parts for this appliance are available through
your contractor or local distributor. For the location of your
nearest distributor, consult the white business pages, the
yellow page section of the local telephone book or contact:
CONSUMER AFFAIRS
GOODMAN MANUFACTURING COMPANY, L.P.
7401 SECURITY WAY
HOUSTON, TEXAS 77040
(713) 254-4729
SAFETY INSTRUCTIONS
TO THE INSTALLER
Before installing this unit, please read this manual to
familiarize yourself on the specific items which must be
adhered to, including maximum external static pressure to
unit, air temperature rise, minimum or maximum CFM and
motor speed connections.
TO THE OWNER
A warranty certificate is provided with the unit. Read the
warranty carefully and note what is covered. Keep the warranty
certificate in a safe place so you can find it when necessary.
Keep this literature in a safe place for future reference.
4
CARBON MONOXIDE POISONING HAZARD
Special Warning for Installation of Furnaces or Air Handling Units in
Enclosed Areas such as Garages, Utility Rooms or Parking Areas
Carbon monoxide producing devices (such as an automobile, space
heater, gas water heater, etc.) should not be operated in enclosed areas
such as unventilated garages, utility rooms or parking areas because of
the danger of carbon monoxide (CO) poisoning resulting from the exhaust
emissions. If a furnace or air handler is installed in an enclosed area such
as a garage, utility room or parking area and a carbon monoxide producing
device is operated therein, there must be adequate, direct outside
ventilation.
This ventilation is necessary to avoid the danger of CO poisoning which
can occur if a carbon monoxide producing device continues to operate in
the enclosed area. Carbon monoxide emissions can be (re)circulated
throughout the structure if the furnace or air handler is operating in any
mode.
CO can cause serious illness including permanent brain damage or death.
B10259-216
• To avoid possible illness or death of the building occupants,
do NOT locate outside air intake device (economizer,
manual fresh air intake, motorized fresh air intake) too
close to an exhaust outlet, gas vent termination, or
plumbing vent outlet. For specific distances required,
consult local codes.
• Allow minimum clearances from the enclosure for fire
protection, proper operation, and service access (see
appendix). These clearances must be permanently
maintained.
• The combustion air inlet and flue outlet hoods on the unit
must never be obstructed. If used, do not allow the
economizer/manual fresh air damper/ motorized fresh air
damper to become blocked by snow or debris. In some
climates or locations, it may be necessary to elevate the
unit to avoid these problems.
• When the unit is heating, the temperature of the return air
entering the unit must be between 50° F and 100° F.
GROUND L EVEL I NSTALLATIONS O NLY:
• When the unit is installed on the ground adjacent to the
building, a level concrete (or equal) base is recommended.
Prepare a base that is 3” larger than the package unit
footprint and a minimum of 3” thick.
• The base should also be located where no runoff of water
from higher ground can collect in the unit.
UNIT LOCATION
IMPORTANT NOTE: Remove wood shipping rails prior to instal-
lation of the unit.
ALL I NSTALLATIONS:
• For proper flame pattern within the heat exchanger and
proper condensate drainage, the unit must be mounted
level.
• The flue outlet hood must be at least 12 inches from any
opening through which flue gases could enter a building,
and at least three feet above any forced air inlet located
within ten feet. The economizer/manual fresh air intake/
motorized fresh air intake and combustion air inlet
mounted on the unit are not affected by this restriction.
• To avoid possible corrosion of the heat exchanger, do
not locate the unit in an area where the outdoor air (i.e.
combustion air for the unit) will be frequently
contaminated by compounds containing chlorine or
fluorine. Common sources of such compounds include
swimming pool chemicals and chlorine bleaches, paint
stripper, adhesives, paints, varnishes, sealers, waxes
(which are not yet dried) and solvents used during
construction and remodeling. Various commercial and
industrial processes may also be sources of chlorine/
fluorine compounds.
Outside Slab Installation
ROOFTOP I NSTALLATIONS O NLY:
NOTE: To ensure proper condensate drainage, unit must be
installed in a level position.
• To avoid possible property damage or personal injury, the
roof must have sufficient structural strength to carry the
weight of the unit(s) and snow or water loads as required
by local codes. Consult a structural engineer to determine
the weight capabilities of the roof.
5
Rooftop Installation
• The unit may be installed directly on wood floors or on
Class A, Class B, or Class C roof covering material.
• To avoid possible personal injury, a safe, flat surface for
service personnel should be provided.
ROOF C URB I NSTALLATIONS O NLY:
• Sufficient structural support must be determined prior to
locating and mounting the curb and package unit.
• Ductwork must be constructed using industry guidelines.
The duct work must be placed into the roof curb before
mounting the package unit.
• Curb insulation, cant strips, flashing and general roofing
material are furnished by the contractor.
GENERAL INFORMATION
This unit is approved for outdoor installation ONLY. Rated
performance is achieved after 72 hours of operation.
performance is delivered at the specified airflow. See outdoor
unit specification sheet for split system models or product
specification sheet for packaged and light commercial
models. Specification sheets can be found at
www.goodmanmfg.com for Goodman® brand products or
www.amana-hac.com for Amana® brand products. Within
either website, please select the residential or commercial
products menu and then select the submenu for the type of
product to be installed, such as air conditioners or heat
pumps, to access a list of product pages that each contain
links to that model’s specification sheet.
To assure that your unit operates safely and efficiently, it must
be installed, operated, and maintained in accordance with
these installation and operating instructions, all local building
codes and ordinances, or in their absence, with the latest
edition of the National Fuel Gas Code NFPA 54/ANSI Z223.1
and National Standard of Canada CAN/CSA B149 Installation
Codes.
The heating and cooling capacities of the unit should be
greater than or equal to the design heating and cooling loads
of the area to be conditioned. The loads should be calculated
by an approved method or in accordance with A.S.H.R.A.E.
Guide or Manual J - Load Calculations published by the Air
Conditioning Contractors of America.
Obtain from:
American National Standards Institute
1430 Broadway
New York, NY 10018
Rated
Roof Curb Installation
TRANSPORTATION D AMAGE
Check the carton upon arrival for external damage. If damage
is found, a request for inspection by carrier agent should be
made in writing immediately.
Carefully inspect the unit for damage including damage to
the cabinetry. Any bolts or screws which may have loosened
in transit must be re-tightened. In the event of damage, the
receiver should:
1. Make notation on delivery receipt of any visible damage to
shipment or container.
2. Notify carrier promptly and request an inspection.
3. In case of concealed damage, carrier should be notified
as soon as possible-preferably within 5 days.
4. File the claim with the following supporting documents:
a. Original Bill of Lading, certified copy, or indemnity bond.
b. Original paid freight bill or indemnity in lieu thereof.
c. Original invoice or certified copy thereof, showing trade
and other discounts or reductions.
d. Copy of the inspection report issued by carrier
representative at the time damage is reported to the
carrier. The carrier is responsible for making prompt
inspection of damage and for a thorough investigation
of each claim. The distributor or manufacturer will not
accept claims from dealers for transportation damage.
NOTE: When inspecting the unit for transportation damage,
remove all packaging materials. Recycle or dispose of the
packaging material according to local codes.
6
RIGGING DETAILS
p
)
g
)
IMPORTANT NOTE: If using bottom discharge with roof curb,
ductwork should be attached to the curb prior to installing the
unit. Ductwork dimensions are shown in roof curb installation
instructions.
Refer to the Roof Curb Installation Instructions for proper curb
installation. Curbing must be installed in compliance with the
National Roofing Contractors Association Manual.
Lower unit carefully onto roof mounting curb. While rigging
unit, center of gravity will cause condenser end to be lower
than supply air end.
Rigging
GAS PIPING
IMPORTANT NOTE: This unit is factory set to operate on natural
gas at the altitudes shown on the rating plate.
burners must not exceed the rated input shown on the rating
plate. Overfiring of the unit could result in premature heat
exchanger failure.
HIGH A LTITUDE DERATE (U.S. INSTALLATIONS O NLY)
IMPORTANT NOTE: The gas/electric units naturally derate with
altitude. Do not attempt to increase the firing rate by changing
orifices or increasing the manifold pressure. This can cause
poor combustion and equipment failure. At all altitudes, the
manifold pressure must be within 0.3 inches W.C. of that listed
on the nameplate for the fuel used. At all altitudes and with
either fuel, the air temperature rise must be within the range
listed on the unit nameplate.
Refer to the Installation Manual provided with the LP kit for
conversion from natural gas to propane gas and for altitude
adjustments.
Use HA02 for installations above 2000’.
PIPING
IMPORTANT NOTE: To avoid possible unsatisfactory operation
or equipment damage due to under firing of equipment, do
not undersize the natural/propane gas piping from the meter/
tank to the unit. When sizing a trunk line, include all appliances
on that line that could be operated simultaneously.
The rating plate is stamped with the model number, type of
gas and gas input rating. Make sure the unit is equipped to
operate on the type of gas available. The gas line installation
must comply with local codes, or in the absence of local codes,
with the latest edition of the National Fuel Gas Code NFPA 54/
ANSI Z223.1.
Pressure = .50 PSIG or less and Pressure Drop of 0.3" W.C. (Based
Nominal Black Pipe Size (inches)
1/23/4
on 0.60 S
1
ecific Gravity Gas
1 1/41 1/2
The rating plate is stamped with the model number, type of gas
and gas input rating. Make sure the unit is equipped to operate on
the type of gas available. Conversion to LP gas is permitted with
the use of the factory authorized conversion kit LPM-05.
INLET GAS PRESSURE
NaturalMin. 5 .0" W.C., Max. 10.0" W.C.
PropaneMin . 11.0" W.C. , Max. 13.0" W.C.
Inlet Gas Pressure Must Not Exceed the Maximum Value Shown in
Table Above.
The minimum supply pressure should not vary from that
shown in the table above because this could prevent the unit
from having dependable ignition. In addition, gas input to the
CFH =
Heatin
BTUH Furnace Input
Value of Gas (BTU/Cubic Foot
Refer to the Proper Piping Practice drawing for the general
layout at the unit. The following rules apply:
1. Use black iron pipe and fittings for the supply piping. The
use of a flex connector and/or copper piping is permitted
as long as it is in agreement with local codes.
2. Use pipe joint compound on male threads only. Pipe joint
compound must be resistant to the action of the fuel used.
3. Use ground joint unions.
4. Install a drip leg to trap dirt and moisture before it can
enter the gas valve. The drip leg must be a minimum of
three inches long.
5. Use two pipe wrenches when making connection to the
gas valve to keep it from turning.
6. Install a manual shut-off valve in a convenient location
(within six feet of unit) between the meter and the unit.
7. Tighten all joints securely.
7
8. The unit must be connected to the building piping by one
of the following methods:
• Rigid metallic pipe and fittings
• Semirigid metallic tubing and metallic fittings
(Aluminum alloy tubing must not be used in exterior
locations)
• Listed gas appliance connectors used in accordance
with the terms of their listing that are completely in the
same room as the equipment
• In the prior two methods above the connector or tubing
must be protected from physical and thermal damage.
Aluminum alloy tubing and connectors must be coated
to protect against external corrosion when in contact
with masonry, plaster or insulation or are subject to
repeated wettings by liquids (water - not rain water,
detergents or sewage)
DRIP LEG
GROUND JOINT UNION
(INSTALLED AHEAD OF GAS VALVE)
GROMMET
Proper Piping Practice
NOTE: The unit gas supply entrance is factory sealed with
plugs. Keep plugs in place until gas supply is ready to be
installed. Once ready, replace the plugs with the supplied
grommets and install gas supply line.
GAS PIPING CHECKS
MANUAL
SHUT-OFF
VALVE
There will be air in the gas supply line after testing for leaks
on a new installation. Therefore, the air must be bled from the
line by loosening the ground joint union until pure gas is
expelled. Tighten union and wait for five minutes until all gas
has been dissipated in the air. Be certain there is no open
flame in the vicinity during air bleeding procedure. The unit is
placed in operation by closing the main electrical disconnect
switch for the unit.
PROPANE GAS INSTALLATIONS
IMPORTANT NOTE: Propane gas conversion kits must be
installed to convert units to propane gas. Refer to the gas
piping section for the correct LP kit for conversion.
All propane gas equipment must conform to the safety
standards of the National Board of Fire Underwriters (See
NBFU Manual 58).
For satisfactory operation, propane gas supply pressure must
be within 9.7 - 10.3 inches W.C. at the manifold with all gas
appliances in operation. Maintaining proper gas pressure
depends on three main factors:
1. Vaporization rate, which depends on (a) temperature of
the liquid, and (b) wetted surface area of the container or
containers.
2. Proper pressure regulation.
3. Pressure drop in lines between regulators, and between
second stage regulator and the appliance. Pipe size
required will depend on length of pipe run and total load of
all appliances.
TANKSAND PIPING
Complete information regarding tank sizing for vaporization,
recommended regulator settings and pipe sizing is available
from most regulator manufacturers and propane gas
suppliers.
Since propane gas will quickly dissolve white lead or most
standard commercial compounds, special pipe dope must
be used. Shellac base compounds resistant to the actions of
liquefied petroleum gases such as Gasolac®, Stalactic®,
Clyde’s® or John Crane® are satisfactory.
See below for typical propane gas piping.
First Stage
Regulator
200 PSIG
Maximum
5 to 15 PSIG
(20 PSIG Max.)
Continuous
Second Stage
Regulator
11" W.C.
Typical Propane Gas Piping
8
R
C
Sizing Between First and Second Stage Regulator
Maximum Propane Capacities listed are based on 1 PSIG Pressure Drop at 10
PSIG Setting. Capacities in 1,000 BTU/HR
PIPE OR
TUBING
LENGTH,
FEET
303097001,3032,2053,3941,8433,854
402655991,1151,8872,9041,5773,298
502355319881,6722,5741,3982,923
602134818961,5152,3321,2672,649
701964468241,3942,1461,1652,437
801824127671,2971,9961,0842,267
901713867191,2171,8731,0172,127
1001613656791,1491,7699612,009
1501302935469231,4217721,613
2001112514677901,2166601,381
250902224147001,0785851,224
300892013786349765301,109
350821853455848984881,020
40076172321543836454949
To convert to Capacities at 15 PSIG Settings -- Multiply by 1.130
To convert to Capacities at 5 PSIG Settings -- Multiply by 0.879
Sizing Between Single or Second Stage Regulator and Appliance*
Maximum Propane Capacities Listed are Based on 1/2" W.C. Pressure Dr op at
11" W.C. Setting. Capacities in 1,000 BTU/HR
PIPE OR
TUBING
LENGTH,
FEET
10491102063485392916081,1462,3533,525
2034761412393682004187881,6172,423
3027611141922961613366321,2991,946
402352971642531372845411,1111,665
502046861462241222554809851,476
601942781322031102314368921,337
80163667113174941983727641,144
100143259100154841753306771,014
1251228528913774155292600899
1501126488012467141265544815
2001022416910658120227465697
25091936619451107201412618
3008183355854697182374560
3507163051784389167344515
4007152847734083156320479
*DATA IN ACCORDANCE WITH NFPA PAMPHLET NO. 54
TUBING SIZE, O.D., TYPE L
3/8" 1/2" 5/8" 3/4" 7/8"1/2"3/4"1"1-1/4" 1-1/2"
TUBING SIZE, O.D., TYPE L
3/8"1/2"5/8"3/4"7/8"1/2"3/4"
NOMINAL PIPE SIZE,
NOMINAL PIPE SIZE,
SCHEDULE 40
SCHEDULE 40
Propane Gas Pipe Sizing
cooling. Units which will have economizers may use thermostats
with two or three stages of cooling. All units can use single stage
or multi-stage thermostats. Refer to figures later in this section
for wiring.
The units are designed for operation on 60 hertz current and at
voltages as shown on the rating plate. All internal wiring in the
unit is complete. It is necessary to bring in the power supply to
the contactor as shown on the unit wiring diagram which is
supplied with each unit. The low voltage wiring must be connected
between the unit control panel and the room thermostat.
Thermostat
R
CY1
W1
W2
W1W2
Y2
G
GY1Y2
Two-Stage Heating
(
Furnace Integrated
Control Module
with
Two-Stage Cooling
Two-Stage Heating with Two-Stage Cooling
Thermostat Diagram
SINGLE STAGE T HERMOSTAT
To use a single stage thermostat, move jumper located to the
left of the terminal strip labeled “Stage Delay” from NONE to
“5” or “10” minutes. This selection will cause the control to
run on low stage for the selected time (5 or 10 minutes) then
shift to HIGH STAGE. This option controls both cooling and
heating modes. If the jumper is not moved, only low-stage
cool and low-stage heat will operate.
(
5 MINUTE DELAY
PERIOD WITH
JUMPER IN THIS
POSITION
10 MINUTE DELAY
ELECTRICAL WIRING
THERMOSTAT LOCATION
PERIOD WITH
JUMPER IN THIS
POSITION
Mount the thermostat approximately five feet above the floor,
in an area that has an inside, vibration-free wall and has
good air circulation.
Movement of air must not be obstructed by furniture, door,
draperies, etc. The thermostat must not be mounted where it
will be affected by drafts, hot or cold water pipes or air ducts in
walls, radiant heat from fireplace, lamps, the sun, television,
etc. Consult the Instruction Sheet packaged with thermostat
for mounting instructions.
NOTE: *PG1524, *PG1530, *PG1537, and *PG1549 units have
one stage of mechanical cooling and two stages of heat. All other
Two-Stage Heating (timed) and Two-Stage Cooling (timed)
with Single Stage Thermostat Diagram
Refer to the unit wiring diagram for electrical connections.
When installed, the unit must be electrically grounded in
accordance with local codes or in the absence of local codes,
with the National Electrical Code, ANSI/NFPA No. 70, and/or
the CSA C22.1 Electrical Code. Ensure low voltage
connections are waterproof.
units have two stages of heating and two stages of mechanical
9
For unit protection, use a fuse or HACR circuit breaker that is in
excess of the circuit ampacity, but less than or equal to the
maximum overcurrent protection device. DO NOT EXCEED
THE MAXIMUM OVERCURRENT DEVICE SIZE SHOWN ON
UNIT DATA PLATE.
All line voltage connections must be made through
weatherproof fittings. All exterior power supply and ground
wiring must be in approved weatherproof conduit. Low voltage
wiring from the unit control panel to the thermostat requires
coded cable. See below for ground level and rooftop wiring.
Note:Junction box location
shown is optional and is
for illustration purposes only.
JUNCTION BOX
UNIT VOLTAGE
The unit transformer is factory connected for 230V operation.
If the unit is to operate on 208V, reconnect the transformer
primary lead as shown on the unit wiring diagram. The induced
draft blower on some models is equipped with a low speed
230V lead (blue) and a low speed 208V lead (black). If
equipped, connect the induced draft blower low speed 208V
lead (black) in place of the low speed 230V lead (blue). Place
the unused 230V lead on the “PARK” terminal located on
ignition control.
HEAT A NTICIPATOR S ETTING
The heat anticipator is to be set by measuring the load
(amperage) at the “R” circuit. Follow the instructions provided
with the thermostat for more details.
CIRCULATING AIR AND FILTERS
AIRFLOW C ONVERSION
Units can easily be converted from horizontal to downdischarge airflow delivery. In down-discharge or high static
installations, the installer should measure the total external
static and review the blower performance charts before
performing the installation. In some installations it will be
necessary to change the blower speed to provide proper air
flow.
Horizontal Air Flow
Single phase models are shipped without horizontal duct
covers. If needed, these kits may be ordered through
Goodman’s Service Parts department.
Electrical Power Directly To Junction Box
Electrical Power Routed Through Bottom of Unit
Typical Electrical Wiring Unit Voltage
Duct Cover Installation
Down Discharge Applications
Cut insulation around bottom openings and remove panels
from the bottom of the unit, saving the screws holding the
panels in place.
NOTE: Single phase models require installation of horizontal
duct kit #20464501PDGK (medium chassis) and
#20464502PDGK (large chassis).
DUCTWORK
Duct systems and register sizes must be properly designed
for the C.F.M. and external static pressure rating of the unit.
Ductwork should be designed in accordance with the
recommended methods of Air Conditioning Contractors of
America Manual D (Residential) or Manual Q (Commercial).
10
All ductwork exposed to the outdoors must include a weatherproof
barrier and adequate insulation.
A duct system should be installed in accordance with Standards
of the National Board of Fire Underwriters for the Installation of
Air Conditioning, Warm Air Heating and Ventilating Systems.
Pamphlets No. 90A and 90B.
The supply duct from the unit through a wall may be installed
without clearance. However, minimum unit clearances as
shown in the appendix must be maintained. The supply duct
should be provided with an access panel large enough to
inspect the air chamber downstream of the heat exchanger. A
cover should be tightly attached to prevent air leaks.
For duct flange dimensions on the unit refer to the Unit
Dimension illustration in the appendix.
For down-discharge applications, the ductwork should be
attached to the roof curb prior to installing the unit. Ductwork
dimensions are shown in the roof curb installation manual.
If desired, supply and return duct connections to the unit may
be made with flexible connections to reduce possible unit
operating sound transmission.
FILTERS
HOOD
LOWER
FLUE
HOOD
LIP
SCREEN
INSTALLATION - COMBUSTION AIR INTAKE HOOD
1. Locate the second hood.
2. Using the three screws provided, attach the hood (with
the opening facing down) to the heat exchanger access
door.
Even though a return air filter is not supplied with this unit,
there must be a means of filtering all return air. All units may
be externally filtered.
Refer to the unit filter size chart in the appendix for filter size
information.
Filters installed external to the unit should be sized in
accordance with their manufacturer recommendations. A
throwaway filter must be sized for a maximum face velocity of
300 feet per minute.
Filter Installation
IMPORTANT NOTE: When installing a filter, the air flow arrows
on the filter must point toward the circulator blower.
VENTING
NOTE: Venting is self-contained. Do not modify or block.
INSTALLATION - FLUE H OOD E XHAUST
1. Locate the flue hood assembly box from the blower
compartment.
2. Slide screen over flanges on the lower flue hood.
3. Slide screen into hood.
4. Using the three screws provided, attach the hood (with the
opening facing down) over the flue exhaust opening in the
utility panel.
CONDENSATE DRAIN
CONDENSATE D RAIN C ONNECTION
A 3/4” NPT drain connection is supplied for condensate piping.
An external trap must be installed for proper condensate
drainage.
DRAIN
CONNECTION
UNIT2" MINIMUM
FLEXIBLE
TUBING-HOSE
OR PIPE
3" MINIMUM
11
A POSITIVE LIQUID
SEAL IS REQUIRED
Drain Connection
NORMAL SEQUENCES OF OPERATION
HEATING
This unit is equipped with an ignition control that automatically
lights the main burner. DO NOT attempt to light the main
burners by any other method.
1. Thermostat calls for low or high stage heating.
2. Induced draft blower energizes for 15-second pre-purge.
3. The spark igniter and low and high stage gas valve are
energized for 7 seconds. NOTE: The igniter produces a
very intense electrical spark that ignites the gas.
4. Main burners light and control detects presence of flame.
5. If the call is for low stage heat, the induced draft blower
switches to low speed and the high stage gas valve closes
5 seconds after the main burners light. If call is for high
stage heat, induced draft blower remains at high speed
and high stage gas valve remains open.
NOTE: If a single stage thermostat is used, the control will
step to low stage after the main burners light and remain
at low stage for 5 or 10 minutes, depending on jumper
position. If the call for HEAT remains after the transition
delay time expires, the control will transition from low stage
to high stage.
6. The 30-second HEAT FAN ON delay time begins after the
main burners light.
7. The unit delivers heat to the conditioned space until the
thermostat is satisfied.
8. Gas valve(s) de-energizes. The induced draft blower
continues operation for a 30-second post-purge.
9. Induced draft blower remains at low speed (or switches
from high to low if operating at high stage heat) for the 30second post purge.
10. Ignition control begins timing the HEAT FAN OFF delay.
There is an adjustable HEAT FAN OFF delay of
approximately 90/120/150/180 seconds (factory set at
150). If the unit is operating at high stage when the call for
heat is removed, the blower will operate for 30 seconds at
high heat speed then switch to low heat speed for the
remainder of the selected HEAT FAN OFF delay.
NOTE: After the HEAT FAN OFF delay time has elapsed,
the blower will de-energize. This allows any additional
heat in the heat exchanger to be transferred to the
conditioned space.
COOLING
1. Thermostat calls for low or high stage cooling.
2. If the thermostat call is for low stage cooling, the
compressor and outdoor fan are energized at low stage. If
the thermostat call is for high stage cooling, the
compressor and outdoor fan are energized at high stage.
3. The indoor blower will energize approximately 6 seconds
later.
4. The unit delivers cooling to the conditioned space until the
thermostat is satisfied.
5. The compressor and outdoor fan will be de-energized
when the thermostat opens.
6. The indoor blower continues to run at low cool speed for
approximately 60 seconds after the thermostat is satisfied.
This allows additional cooling from the indoor coil to be
transferred to the conditioned space. Then, the indoor
blower is de-energized.
NOTE: A 180-second anti-short cycle is integral to the control
and prevents recycling of the compressor.
FAN ONLY
1. Thermostat calls for FAN ONLY by energizing “G”.
2. The indoor blower is immediately energized at the low
heat speed.
3. The indoor blower is immediately de-energized once
thermostat call for FAN is removed.
STARTUP, ADJUSTMENTS, AND CHECKS
HEATING S TARTUP
This unit is equipped with an electronic ignition device to
automatically light the main burners. It also has a power vent
blower to exhaust combustion products.
On new installations, or if a major component has been
replaced, the operation of the unit must be checked.
Check unit operation as outlined in the following instructions.
If any sparking, odors, or unusual sounds are encountered,
shut off electrical power and check for wiring errors, or
obstructions in or near the blower motors. Duct covers must
be removed before operating unit.
Heat Anticipator Setting
Set the heat anticipator on the room thermostat to 0.4 amps
to obtain the proper number of heating cycles per hour and to
prevent the room temperature from overshooting the room
thermostat setting.
Rollout Protection Control
The rollout protection device opens, cutting power to the gas
valve, if the flames from the burners are not properly drawn
into the heat exchanger. The rollout protection device is located
on the burner bracket. The reason for elevated temperatures
at the control must be determined and repaired prior to
resetting this manual reset control.
Rollout Protection
Rollout Protection on Burner Bracket
Secondary Limit Control
The secondary limit control is located on the top of the blower
scroll assembly. This control opens when elevated
temperatures are sensed. Elevated temperatures at the
control are normally caused by blower failure. The reason for
the opening should be determined and repaired prior to
resetting.
12
If the power to the unit is interrupted during the heating cycle, it
may cause the secondary limit to trip. Once the blower
compartment temperature drops below the limit reset
temperature, the limit will automatically reset.
Secondary
Control Lim it
Back of Unit
Gas Supply And Manifold Check
Gas supply pressure and manifold pressure with the burners
operating must be as specified on the rating plate.
Gas Inlet Pressure Check
Gas inlet pressure must be checked and adjusted in
accordance to the type of fuel being consumed.
With Power And Gas Off:
1. Connect a water manometer or adequate gauge to the
inlet pressure tap of the gas valve.
Inlet gas pressure can also be measured by removing the
cap from the dripleg and installing a predrilled cap with a
hose fitting.
With Power And Gas On:
2. Put unit into heating cycle and turn on all other gas
consuming appliances.
INLET GAS PRESSURE
Secondary Limit Control
Pre-Operation Checks
1. Close the manual gas valve external to the unit.
2. Turn off the electrical power supply to the unit.
3. Set the room thermostat to its lowest possible setting.
4. Remove the heat exchanger door on the side of the unit by
removing screws.
5. This unit is equipped with an ignition device which
automatically lights the main burner. DO NOT try to light
burner by any other method.
6. Move the gas control valve switch to the OFF position. Do
not force.
7. Wait five minutes to clear out any gas.
8. Smell for gas, including near the ground. This is important
because some types of gas are heavier than air. If you
have waited five minutes and you do smell gas,
immediately follow the warnings on page 4 of this manual.
If having waited for five minutes and no gas smell is noted,
move the gas control valve switch to the ON position.
9. Replace the heat exchanger door on the side of the unit.
10. Open the manual gas valve external to the unit.
11. Turn on the electrical power supply to the unit.
12. Set the thermostat to desired setting.
Open to
Atmosphere
n
o
a
m
M
Pressure Boss
r
e
t
e
o
n
m
a
M
e
o
s
H
Pressure Boss
Inlet
t
r
e
e
Outl et
On/Off Switch
High Fire Regulator
High Fi re
Coil Terminal (HI)
Terminal (C)
Adjust
A
Common
Regu lator
Vent
Low Fire
Regulat or Adju st
Coaxial Coil
Terminal (M)
NaturalMin. 5 .0" W.C., Max. 10.0" W.C.
PropaneMin . 11.0" W.C. , Max. 13.0" W.C.
NOTE: Inlet Gas Pressure Must Not Exceed the Maximum
Value Shown.
If operating pressures differ from above, make necessary
pressure regulator adjustments, check piping size, etc., and/
or consult with local utility.
Gas Line
Gas
Shutoff
Valve
Gas Line
To Furnace
Open To
Drip Leg Cap
With Fitting
Manometer Hose
Atmosphere
Manometer
Measuring Inlet Gas Pressure
Alternate Method
Manifold Pressure Check
1 Turn OFF gas to furnace at the manual gas shutoff valve
external to the furnace.
2. Turn off all electrical power to the system.
3. Back outlet pressure test screw (inlet/outlet pressure boss)
out one turn (counterclockwise, not more than one turn).
4. Attach a hose and manometer to the outlet pressure boss
of the valve.
5. Turn ON the gas supply.
6. Turn on power and energize main (M) solenoid. Do not
energize the HI solenoid.
7. Measure gas manifold pressure with burners firing. Adjust
manifold pressure using the Manifold Gas Pressure table
shown below.
White-Rodgers Model 36G54 connected to Manometer
13
Manifold Ga s P res sure
Gas
NaturalLo w Stage1.6 - 2.2" w.c.2.0" w.c.
High Stage3.2 - 3.8" w.c.3.5" w.c.
PropaneLo w St age5.7 - 6.3" w.c.6. 0" w.c.
High Stage9.7 - 10.3" w.c.10.0" w.c.
RangeNominal
8. Remove regulator cover screw from the low (LO) outlet
pressure regulator adjust tower and turn screw clockwise
to increase pressure, or counterclockwise to decrease
pressure.
9. Energize main (M) solenoid as well as the HI terminal.
10. Remove regulator cover screw from the HI outlet pressure
regulator adjust tower and turn screw clockwise to increase
pressure, or counterclockwise to decrease pressure.
11. Turn off all electrical power and gas supply to the system.
12. Remove manometer hose from outlet pressure boss.
13. Turn outlet pressure test screw in to seal pressure port
(clockwise, 7 in-lb minimum).
14. Turn on electrical power and gas supply to the system.
15. Turn on system power and energize valve.
16. Using a leak detection solution or soap suds, check for
leaks at pressure boss screw. Bubbles forming indicate
a leak. SHUT OFF GAS AND FIX ALL LEAKS IMMEDIATELY.
NOTE:For gas to gas conversion, consult your
dealer for appropriate conversion.
Gas Input (Natural Gas Only) Check
To measure the gas input use a gas meter and proceed as
follows:
1. Turn off gas supply to all other appliances except the unit.
2. With the unit operating, time the smallest dial on the meter
for one complete revolution. If this is a 2 cubic foot dial,
divide the seconds by 2; if it is a 1 cubic foot dial, use the
seconds as is. This gives the seconds per cubic foot of
gas being delivered to the unit.
3. INPUT=GAS HTG VALUE x 3600 / SEC. PER CUBIC FOOT
Example: Natural gas with a heating value of 1000 BTU per cubic
foot and 34 seconds per cubic foot as determined by Step 2, then:
Input = 1000 x 3600 / 34 = 106,000 BTU per Hour. NOTE:
BTU content of the gas should be obtained from the gas
supplier. This measured input must not be greater than
shown on the unit rating plate.
4. Relight all other appliances turned off in step 1. Be sure
all pilot burners are operating.
Main Burner Flame Check
Flames should be stable, soft and blue (dust may cause
orange tips but they must not be yellow) and extending directly
outward from the burner without curling, floating or lifting off.
Temperature Rise Check
Check the temperature rise through the unit by placing
thermometers in supply and return air registers as close to
the unit as possible. Thermometers must not be able to
sample temperature directly from the unit heat exchangers,
or false readings could be obtained.
1. All registers must be open; all duct dampers must be in
their final (fully or partially open) position and the unit
operated for 15 minutes before taking readings.
2. The temperature rise must be within the range specified
on the rating plate.
NOTE: Air temperature rise is the temperature difference
between supply and return air.
With a properly designed system, the proper amount of
temperature rise will normally be obtained when the unit is
operated at rated input with the recommended blower speed.
If the correct amount of temperature rise is not obtained, it may
be necessary to change the blower speed. A higher blower speed
will lower the temperature rise. A slower blower speed will increase
the temperature rise.
NOTE: Blower speed MUST be set to give the correct air
temperature rise through the unit as marked on the rating
plate.
External Static Pressure Check
The total external static pressure must be checked on this
unit to determine if the airflow is proper.
Blower Speed Adjustments
WARNING
O AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRIC SHOCK, REMOVE
T
ELECTRICAL POWER FROM THE UNIT BEFORE CHANGING SPEED TAPS ON THE
BLOWER MOTOR.
Refer to the wiring diagram in the appendix to verify speed tap
settings.
Depending upon the model, blower speeds are changed at
the indoor blower. The ignition control board has four blower
speeds: LOW HEAT, HI HEAT, LOW COOL and HIGH COOL.
NOTE: FAN ONLY energizes at LOW HEAT speed.
The *PG15 models are equipped with EEM motors. EEM motors
are constant torque motors with very low power consumption.
This motor is energized by 24VAC. Adjust the CFM for the unit
by changing the 24VAC leads to the speed terminal block on the
motor.
HEATINGCOOLING
Speed
Tap
T1
T2
Definition
Low
Speed Heat
High
Speed Heat
NOTE: Heating airflow must be adjusted to provide the
temperature rise shown on rating plate. A higher speed tap
may not provide more airflow. Blower speeds are
programmed to deliver adequate airflow at rated external static
pressure (ESP). Refer to airflow table provided in the Appendix
for details.
Limit Check
Check limit control operation after 15 minutes of operation
by blocking the return air grille(s).
1. After several minutes the main burners must go OFF.
Blower will continue to run.
2. Remove air restrictions and main burners will relight
after a cool down period of a few minutes.
Adjust the thermostat setting below room temperature.
1. Main burners must go OFF.
2. Circulating Air Blower will continue to run for 90, 120,
150 or 180 seconds, depending on the setting.
Lead
Color
WhiteT3
BrownT4
Spee d
Tap
T5
Definition
Low Speed
Cool
High Speed
Cool
High Speed
Cool Hi-Static
Lead
Color
Purple
Yellow
14
space. It is the installing contractors responsibility to ensure
LO COOL
HI COOL
LO HEAT
HI HEAT
U6
U7
U4
U3
U5
P1
K2
K1
the proper refrigerant sub-cooling at the condenser is adjusted
for each application. As the outdoor ambient temperature
rises the sub-cooling decreases and as the outdoor ambient
temperature lowers, the sub-cooling increases. NOTE: Proper
sub-cooling adjustment optimizes cooling performance.
Models equipped with thermostatic expansion valve, charge
the system to sub-cooling, range shown on chart, when
necessary, adjust expansion valve stem for superheat setting.
SPEEDUP
SW1
FAULT
BLOWER
RECALL
OFF DELAY
F1
STAGE
ECON
DELAY
RCW1W2
GY1Y2
NOTE: The expansion valve will not need adjustment for most
applications. Ensure system superheat is set within range listed
on chart.
Control Board (Top)
NOTE: If necessary, adjust fan OFF delay settings to obtain satis-
factory comfort level.
Unit Shutdown
1. Set the thermostat to lowest setting.
2. Turn off the electrical power supply to the unit.
3. Remove the heat exchanger door on the side of the unit by
removing screws.
4. Move the gas control valve switch to the OFF position. Do
not force.
5. Close manual gas shutoff valve external to the unit.
6. Replace the heat exchanger door on the unit.
7. If cooling and/or air circulation will be desired, turn ON the
electrical power.
COOLING S TARTUP
NOTE: Check all manual reset limit controls in heating circuit if
cooling mode does not operate.
Compressor Protection Devices
The compressor includes components which are designed
to protect the compressor against abnormal operating
conditions.
To adjust superheat, remove the control box cover and locate
the expansion valve on the liquid line of the evaporator.
Unscrew the cover from the expansion valve, locate the
adjustment screw, and turn it clockwise (in) to increase
superheat or counterclockwise (out) to decrease superheat.
Replace adjustment cap. Wait a minimum of 10 minutes
between adjustments to allow time for the TXV and pressures
to stabilize.
Cooling Operation
NOTE: Mechanical cooling cannot be reliably provided at
ambient temperatures below 50° F.
1. Turn on the electrical power supply to the unit.
2. Place the room thermostat selector switch in the COOL
position (or AUTO if available, and if automatic changeover
from cooling to heating is desired).
3. Set the room thermostat to the desired temperature.
Refrigerant Charge Check (Units with Fixed Orifice Devices)
After completing airflow measurements and adjustments the
unit’s refrigerant charge must be checked. All package units with
fixed orifice devices are charged using the super heat method at
the compressor suction line.
For charge adjustments, see superheat and charts shown for
each model.
Cooling Refrigerant Charging (Models with TXV)
Check unit charge before putting the cooling section into full
operation. The unit has a thermostatic expansion valve metering
device. To ensure the unit is properly charged for the intended
application, check the unit refrigerant sub-cooling at the
condenser. The refrigerant sub-cooling is a function of outdoor
ambient temperature and return air temperature of the conditioned
TROUBLESHOOTING
IGNITION CONTROL ERROR CODES
The following presents probable causes of questionable unit
operation. Refer to Diagnostic Indicator Chart for an
interpretation of the signal and to this section for an explanation.
Remove the control box access panel and note the number of
diagnostic LED flashes. Refer to Diagnostic Indicator Chart
for an interpretation of the signal and to this section for an
explanation.
FAULT R ECALL
The ignition control is equipped with a momentary push-button
switch that can be used to display on the diagnostic LED the last
five faults detected by the control. The control must be in Standby
Mode (no thermostat inputs) to use the feature. Depress the pushbutton switch for approximately 2 seconds. NOTE: Do not hold
for longer than 4 seconds. Holding the button for 4 seconds
or higher will erase the memory! Release the switch when the
LED is turned off. The diagnostic LED will then display the
flash codes associated with the last five detected faults. The
order of display is the most recent fault to the least recent
fault.
15
ABNORMAL O PERATION - HEATING
INTERNAL C ONTROL F AILURE
If the integrated ignition control in this unit encounters an
internal fault, it will go into a “hard” lockout and turn off the
diagnostic LED. If diagnostic LED indicates an internal fault,
check power supply to unit for proper voltage, check all fuses,
circuit breakers and wiring. Disconnect electric power for five
seconds. If LED remains off after restoring power, replace
control.
EXTERNAL L OCKOUT
An external lockout occurs if the integrated ignition control
determines that a measurable combustion cannot be
established within three (3) consecutive ignition attempts. If
flame is not established within the seven (7) second trial for
ignition, the gas valve is de-energized, 30 second inter-purge
cycle is completed, and ignition is re-attempted. The control
will repeat this routine three times if a measurable combustion
is not established. The control will then shut off the induced
draft blower and go into a lockout state.
If flame is established but lost, the control will energize the
circulator blower at the heat speed and then begin a new
ignition sequence. If flame is established then lost on
subsequent attempts, the control will recycle the ignition
sequence.
The diagnostic fault code is 1 flash for a lockout due to failed
ignition attempts. The integrated control will automatically
reset after one hour, or it can be reset by removing the
thermostat signal or disconnecting the electrical power supply
for over five seconds. If the diagnostic red LED indicates an
external lockout, perform the following checks:
•Check the supply and manifold pressures
•Check the gas orifices for debris
•Check gas valve for proper operation
•Check flame sensor
A drop in flame signal can be caused by nearly invisible
coating on the sensor. Remove the sensor and carefully
clean with steel wool.
•Check wiring
Check wiring for opens/shorts and miswiring.
IMPORTANT NOTE: If you have to frequently reset your gas/
electric package unit, it means that a problem exists that
should be corrected. Contact a qualified servicer for further
information.
PRESSURE SWITCH STUCK OPEN
A pressure switch stuck open can be caused by a faulty pressure
switch, faulty wiring, a disconnected or damaged hose, a blocked
or restricted flue, or a faulty induced draft blower.
If the control senses an open pressure switch during the prepurge cycle, the induced draft blower only will be energized. If
the pressure switch opens after ignition has begun the gas
valve is de-energized, the circulator blower heat off cycle
begins, and the induced draft blower remains on. The
diagnostic LED (red) code is two (2) flashes.
PRESSURE SWITCH STUCK CLOSED
A stuck closed pressure switch can be caused by a faulty
pressure switch or faulty wiring. If the control encounters a
pressure switch stuck closed, the induced draft blower
remains off. The diagnostic red LED code for this fault is
three (3) flashes.
OPEN THERMAL PROTECTION DEVICE
If a limit switch opens, the gas valve is immediately deenergized, the induced draft and air circulating blowers are
energized. The induced draft and air circulator blowers remain
energized until the limit switch re-closes. The diagnostic LED
(red) code for an open limit is four (4) flashes.
PRIMARY LIMIT
A primary limit will open due to excessive supply air
temperatures. This can be caused by a dirty filter, excessive
duct static, insufficient air flow, or a faulty limit. Check filters,
total external duct static, blower motor, blower motor speed
tap (see wiring diagram), and limit. This limit will automatically
reset once the temperature falls below a preset level.
AUXILIARY/SECONDARY LIMIT
A dirty filter, excessive duct static, insufficient air flow, a faulty
limit, or a failed circulator blower can cause this limit to open.
Check filters, total external duct static, circulator blower motor,
blower motor speed tap (see wiring diagram), and limit. An
interruption in electrical power during a heating cycle may
also cause the auxiliary limit to open. The automatic reset
secondary limit is located on top of the circulator blower
assembly.
ROLLOUT LIMIT
If the burner flames are not properly drawn into the heat
exchanger, the flame rollout protection device will open.
Possible causes are restricted or blocked flue passages,
blocked or cracked heat exchanger, a failed induced draft
blower, or insufficient combustion air. The rollout protection
device is a manual reset limit located on the burner bracket.
The cause of the flame rollout must be determined and
corrected before resetting the limit.
FLAME DETECTEDWITH GAS VALVE CLOSED
If flame is detected with the gas valve de-energized, the
combustion and air circulator blowers are energized. The
diagnostic fault code is five (5) flashes (red LED) for this
condition. The flame diagnostic LED (amber) will flash (2)
times to indicate this condition. The control can be reset by
removing the power supply to the unit or it will automatically
reset after one hour. Miswiring is the probable cause for this
fault.
LOW FLAME SIGNAL
Under some conditions, the fuel or air supply can create a nearly
invisible coating on the flame sensor. This coating acts as an
insulator causing a drop in the flame signal. If the flame signal
drops below a predetermined value, the ignition control will display
an error code of (1) flash on the amber diagnostic LED. The unit
will continue to operate until the control can no longer detect flame.
ABNORMAL OPERATION - COOLING
SHORT CYCLE COMPRESSOR DELAY
The automatic ignition control has a built-in feature that
prevents damage to the compressor in short cycling
situations. In the event of intermittent power losses or
intermittent thermostat operation, the ignition control will delay
output to the compressor contactor for three minutes from the
time power is restored or thermostat call for cooling is
restored. (Compressor is off a total of three minutes). The
diagnostic red LED will flash six (6) times to indicate the
compressor contactor output is being delayed.
16
NOTE: Some electronic thermostats also have a built-in
compressor short cycle timer that may be longer than the
three minute delay given above. If you are using an electronic
thermostat and the compressor has not started after three
minutes, wait an additional five minutes to allow the
thermostat to complete its short cycle delay time.
HIGH PRESSURE S WITCH/LOSSOF CHARGE SWITCH
Some models include a high pressure cutout switch and/or a
loss of charge cutout switch. The high pressure cutout switch
protects the refrigeration system from excessive operating
pressures. The loss of charge cutout switch protects the
refrigeration system from very low operating pressures due
to a loss of refrigerant. Compressor operation will be disabled
if either of these devices opens. If either devices opens, the
diagnostic red LED will flash (9) times to indicate that a
refrigeration system pressure switch is open.
MAINTENANCE
CONDENSER, EVAPORATOR, AND INDUCED D RAFT MOTORS
Bearings on the air circulating blower motor, condenser motor
and the combustion fan motor are permanently lubricated.
No additional oiling is required.
FLAME SENSOR (QUALIFIED SERVICER ONLY)
A drop in the flame current can be caused by a nearly invisible
coating on the flame sensor. This coating, created by the fuel
or combustion air supply, can be removed by carefully cleaning
the flame sensor with steel wool.
NOTE: After cleaning, the microamp signal should be stable
and in the range of 4 - 6 microamps DC.
Flame
Sensor
Have the gas heating section of the unit checked at least
once a year before the heating season begins, to be sure that
the combustion air inlet and flue outlet hoods are not blocked
by debris, which would prevent adequate combustion air and
a properly operating vent system.
FILTER R EPLACEMENTOR C LEANING
A return air filter is not supplied with this unit; however, there
must be a means of filtering all of the return air. The filter(s)
may be located in the return air duct(s), or return air filter
grille(s). Consult with your installing dealer for the actual
location of the return air filter(s) for your unit.
Dirty filters are the most common cause of inadequate heating
or cooling performance. Filter inspection should be made at
least every two months; more often if necessary because of local
conditions and usage.
Dirty throwaway filters should be discarded and replaced with a
new, clean filter. Dirty permanent filters should be washed with
water, thoroughly dried and sprayed with a filter adhesive before
being reinstalled. (Filter adhesives may be found at many
hardware stores.) Permanent filters should last several years.
However, should one become torn or uncleanable, it should be
replaced.
CABINET F INISH M AINTENANCE
Use a fine grade automotive wax on the cabinet finish to
maintain the finish’s original high luster. This is especially
important in installations with extended periods of direct
sunlight.
Flame Sensor
FLUE PASSAGES (QUALIFIED SERVICER ONLY)
At the start of each heating season, inspect and, if necessary,
clean the unit flue passage.
CLEANING FLUE PASSAGES (QUALIFIED SERVICER ONLY)
1. Shut off electric power and gas supply to the unit.
2. Remove burner assembly by disconnecting the gas line
and removing the manifold bracket from the partition panel.
3. Remove the flue from the induced draft blower and the
collector box cover from the partition panel.
4. The primary heat exchanger tubes can be cleaned using a
round wire brush attached to a length of high grade stainless
steel cable, such as drain cleanout cable. Attach a variable
speed reversible drill to the other end of the spring cable.
Slowly rotate the cable with the drill and insert it into one of
the primary heat exchanger tubes. While reversing the drill,
work the cable in and out several times to obtain sufficient
cleaning. Use a large cable for the large tube, and then repeat
the operation with a small cable for the smaller tube. Repeat
for each tube.
5. When all heat exchanger tubes have been cleaned,
replace the parts in the reverse order in which they were
removed.
6. To reduce the chances of repeated fouling of the heat
exchanger, perform the steps listed in “Startup,
Adjustments, and Checks”.
CLEAN OUTSIDE COIL (QUALIFIED SERVICER ONLY)
The coil with the outside air flowing over it should be inspected
annually and cleaned as frequently as necessary to keep the
finned areas free of lint, hair and debris.
17
MAIN BURNER FLAME (QUALIFIED SERVICER ONLY)
Flames should be stable, soft and blue (dust may cause
orange tips but must not be yellow). The flames must extend
directly outward from the burner without curling, floating or
lifting off.
Check the burner flames for:
1. Good adjustme nt
2. Stable, soft and blue
3. Not curling, floating, or lifting off.
Burner Flame
At least once a year, prior to or during the heating season,
make a visual check of the burner flames.
NOTE: This will involve removing and reinstalling the heat exchanger
door on the unit, which is held by two screws. If you are uncertain
about your ability to do this, contact a qualified servicer.
If a strong wind is blowing, it may alter the airflow pattern within the
unit enough that an inspection of the burner flames is not possible.
CLEANING B URNERS
1. Shut off electric power and gas supply to the unit.
2. Remove the screws securing the manifold to the burner
retention bracket. Remove the manifold and rotate each
burner counterclockwise to remove.
Burner
Burner
Bracket
For further information on the yearly inspection, consult the
User Manual. It is recommended that a qualified servicer
inspect and service the unit at least once each year.
Turn the unit on at the thermostat. Wait a few minutes, since
any dislodged dust will alter the normal flame appearance.
Flames should be predominantly blue and directed into the
tubes. They should not be yellow. They should extend directly
outward from the burner ports without curling downward,
floating or lifting off the ports.
ACCESSORIES AND FUNCTIONAL PARTS
SHEET M ETAL A CCESSORIES
Additional accessories can be purchased to fit specific application
needs. Parts and instructions are available from your distributor.
FUNCTIONAL P ARTS
FUNCTIONAL PARTS
Auxiliary Limit SwitchFlame Rollout Switch
Blower HousingFlame Sensor
Circulator Blower MotorGas Orifice
Blower WheelGas Valve
BurnerHeat Exchanger
CapacitorHigh Limit Switch
CompressorIgniter
Condenser CoilIgnition Control
Condenser Fan BladeInduced Draft Blower
Condenser Fan MotorPressure Switch
ContactorPressure Switch Hose
Gas ManifoldThermostatic Expansion Valve
Evaporator CoilTransformer
Manifold
Manifold Assembly
3. Remove the burners.
4. Use a bottle brush to clean burner insert and inside of the
burners.
5. Replace burners and manifold, inspect the burner
assembly for proper seating of burners in retention slots.
6. Reconnect electrical power and gas supply.
Functional Parts List
GENERAL I NFORMATION
1. Refer to the description in Functional Parts List when
ordering any of the listed functional parts. Be sure to provide
the unit model and serial numbers with the order.
2. Although only functional parts are shown, all sheet metal
parts, doors, etc. may be ordered by description.
3. Parts are available from your distributor.
18
APPENDIX
19
Amber Light Signal Refer to Abnormal Heating or Cooling Operation Sections of this Manual
Circulator
Blower
Gas Valve
IGNITION CONTROL DIAGNOSTIC INDICATOR CHART
Red Light Signal Refer to Abnormal Heating or Cooling Operation Sections of this Manual
OffInternal Control Failure
1 FlashExternal Lockout
2 FlashesPressure Switch Stuck Open
3 FlashesPressure Switch Stuck Closed
4 FlashesThermal Protection Device Open
5 FlashesFlame Detected with Gas Valve Closed
6 FlashesShort Cycle Compressor Delay (Cooling Only)
7 FlashesLimit Opened Five (5) Times Within The Same Call For Heat
8 FlashesIndoor/Outdoor Thermostat Open (Cooling Only; Devices Not present On All Models)
9 FlashesHigh Pressure/Loss of Charge Switch Open (Cooling Only; Devices Not Present On All Models)
OffNo Flame Present
OnNormal Flame
1 FlashLow Flame Current
2 FlashesFlame Detected with Gas Valve De-energized.
HEATING TIMING CHART
HIGH
LOW
OFF
HIGH
LOW
OFF
Igniter
Induced
Draft
Blower
Thermostat
Seconds
Circulator
Blower
Compressor
Outdoor Fan
ON
OFF
HIGH
LOW
OFF
HIGH
LOW
OFF
0 15 22 27 52 0 30
COOLING TIMING CHART
HIGH
LOW
OFF
HIGH
LOW
OFF
HIGH
LOW
OFF
90, 120, 150, 180
20
UNIT DIMENSIONS
SUCTION/LIQUID PRESSURE PORTS
BEHIND COMPRESSOR ACCESS PANEL
COMBUSTION AIR INTAKE
HEAT EXCHANGE ACCESS PANEL
CONDENSATE DRAIN CONNECTION
F
O
R
E
Y
T
T
I
N
V
E
A
C
R
G
20
24
47
GAS SUPPLY ENTRANCE
3/4" NPT FEMALE
FLUE EXHAUST
HOOD
C
4 3/4
16 1/8
19 1/8
7 5/16
7 7/8
POWE R WIRE ENT RANCE
CONTROL WIRE ENTRANCE
18 7/16
FLUE EXHAUST
7 15/16
51
16
1 3/8
5 1/2
16
B
RETURN
LARGE
B
DIMENSION
(INCHES)
SUPPLY
MEDIUM
3
EVAPORATOR/CONTROL PANEL ACCESS PANEL
A3240
B1618
C9 1/214
A
2 3/4
5 1/4
COMBUSTION
AIR INTAKE
SUPPLY
EXHAUST FLU E HOOD
BLOWER ACCESS PANEL
11
5 3/4
22
11
RETURN
22
21
*PG15*****41A* WIRING DIAGRAM
BR
LPS
HPS
WH
PU
BR
BL
BR
YL
BL/PK
PU
YL
ALS
PS
RS
W. R.
GAS VALV E
M
GV
H
C
COMP
C
RS
CM
EM
OR
PU
BL
YL/BK
C
NGL
OR
OR
YL
YL
OR
BR
SOL
PU
BK
HIGH VOLTAGE!
M. F
ULTIPLE POWER SOURCES MAY BE PRESENTAILURE TO DO
SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH
D ALL .
ISCONNECTPOWER BEFORE SERVICING
.
YL/BK
BL/PK
YL
SEE NO TE 6
BL
BK
RD
PU
RD
T2T1
GND
PU
YL
CC
L2L1
BL
BK
GR
PU
PU
BK
208
TR
24V
3
2
240
BK
RD
1
C
BL
POWER SUPPLY
208-230/1/60
SEE NOTE 3
3
2
1
YL
PU
GR
BL
6
5
4
PU
PU
RD
YL
PU
FS
IGN
LS
YL
RD
PU
BR
BL
OR
WH
PU
PU
PU
FS
LO COOL
5
4
24VAC COM
HI COOL
3
2
HI HEAT
1
LO HEAT
OR
OR
180
NONE
150
5 MIN
120
10 MIN
90
BLOWER
STAGE
OFF DELAY
DELAY
L2
T1
1
2
3
F
ECON
BK
BL
LOW
INDUCER
SEE NOT E 7
4
7
5
8
6
9
BR
BL
BL
L1HIGH
PU
YL
LOW
ODF
YL
BK
RD
BK
HI
PARK
BK
YL
PU
63
5
YL
124
YL
YL
Y2Y1GW2W1CR
YL/BK
BL/PK
VM
BL
BL
BK
RD
BR
PU
YL
PU
BR
RD
PU
HCF
RCCF
BK
RD
YL
0140G00533 REV A
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
22
*PG15*****41A* WIRING DIAGRAM
A
A
R
W1
W2
Y2
C
Y1
G
L1
L1
INTEGRATED IGNITION CONTROL
TO
MICRO
MICRO
HIGH VOLTAGE!
M. F
ULTIPLE POWER SOURCES MAY BE PRESENTAILURE TO DO
SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH
SUPP LY VO LTAGE
C
F
PS
LPS
SEE NOTE 8
1
ECO N
ECON
2
3
ECON
208-230/1/60
R
S
HPSHP S
SOL
SOL
CM
VM
EM
LSALS
M
HI
C
5
5
4
H
F
SEE NOTE 2
TR
RS
GV
SEE NO TE 7
CC
EM C
T2
CC
C
L2
L2
L2
L2
T1
CC
LO
HI
LO
HI
L1
L1
P1
TH
2
HLO
1
HLI
3
PSW
6
PSW
8
MVL
9
MVH
7
MVC
5
COM
P2
1
4
5
3
6
2
INTERGRATED IGNITION CONTROL
ECO N
LO HEAT
HI HEAT
TO
LO COOL
HI COOL
D ALL .
ISCONNECTPOWER BEFORE SERVICING
L2
OMPONENT LEGEND
C
AUX ILLARY LIMIT SWI TCH
LS
COMP
L2
INTEGRATED IGNITION CONTROL
COMPRESSOR
CONDENSER MOTOR
CM
CONTACTOR
CC
ECON ECONOMIZER
EM
EVAPOR ATOR MOT OR
FUSEF
FS
FLAME SE NSOR
GND
EQUIPMENT GROUND
EQUIPMENT GROUND
GAS VALVEGV
IIC
INTEGRATED IGNITION CONTROL
IGNITOR
IGN
LS
LIMIT SWITCH
PS
PRESSURE SWIT CH
RCCF
RUN CAPACITOR FOR COMPRESSOR/FAN
ROLLOUT SWITCHRS
SOLENOID (2ND STAGE COOL)SOL
TRTRANSFORMER
VENT MOTORVM
N
OTES
NOTES
1. REP LACEMENT WIRE MUST BE THE SAME SIZ E AND TYPE OF
INSULATION AS ORIGINAL.(USE COPPER CONDUCTOR ONLY).
2. FOR 208 VOLT TRANSFORMER OPERATION MOVE BLACK WIRE
FROM TERMINAL 3 TO TERMINAL 2 ON TRANSFORMER.
3. USE COPPER CONDUCTORS ONLY.
4. FOR 20 8V OPERATION, REMOVE BLU E LEAD FRO M INDUCER LOW
TERMINAL. MOVE BLACK LEAD FROM PARK TERMINAL ONTO
INDUCER LOW TERMINAL. PLACE BLUE LEAD ON PARK TERMINAL.
5. USE N EC CLASS 2 WIRE FOR THERMOS TAT FIELD WIRING .
6. COMPRESSOR 2 ND STAGE SOLENOID NOT PRESENT ON ALL MODELS.
7. OP TIONAL RE FRIGERANT S WITCHES
8. FOR ECO NOMIZER, REMOVE PLU G FROM ECONO MIZER HARN ESS.
CONNECT PLUG FR OM ECONOM IZER TO HAR NESS.
LINE VOLTAGE
LOW VOLTAGE
OPTIONAL HIGH VOLTAGE
HIGH VOLTAGE
LOW VOLTAGE
.
FACTORY WIRING
CTORY WIRING
F
FI
ELD WIRING
IRE CODE
W
BK BLACK
BL BLUE
BR BROWN
GR GREEN
OR ORANGE
PK PINK
PU PURPLE
RD RED
WH WHITE
YL YELLOW
DIA GNOS TIC
LED - RED
ON
OFF
1 FLA SH
2 FLA SHES
3 FLASH ES
4 FLASHES
5 FLA SHES
6 FLASHES
STATUS
NO RMAL OPER ATI ON
NO POWER OR
INTERNAL CONTROL
FAU LT
IGNITION FAILURE
PRESSURE SWITCH OPEN
WITH OUT INDUCER ON
OPEN L IMIT S WITC H
FALSE FLAME DE TECTED
COM PR. SH ORT CYCLE DELAY
CHECK
CHECK
-
-
CHECK INPUT POWER
CHECK FUSE(S)
GAS FL OW
GAS PRESSURE
GAS VALVE
FLAME SENSOR
CHECK PRESSURE SWITCH
CHECK TUBING
CHECK VENT MOTOR
CHECK PRESSURE SWITCHPRESSURE SWITCH CLOSED
CHECK WIRI NG FOR SHORTS
CHECK MAIN LIMIT SWITCH
CHECK AUXILIARY LIMIT SW.
CHECK RO LLOUT LIMIT SW.
CHECK G AS VALVE
CHECK FOR SHORTS IN
FLAME SENSOR WIRING
3 MIN COMP. SHORT
CYCL E DELAY
DIA GNOS TIC
LED - RED
7 FLASH ES
DIAGNOSTIC
LED - AMBER
OFF
ON
1 FLASH
2 FLASH ES
STATUS
SAME CA LL FOR HEAT
PSW/LOC OPEN9 FLA SHES
STATUS
NO FLAME PRESENT
LOW FLAME SIGNAL
FAL SE FL AME D ETEC TE D
CHECK
CHECK MAIN LIMIT SWITCHLIMIT OPEN 5 TIMES IN
CHECK AUXILIARY LIMIT SW.
CHECK JUMPER BETWEEN
1 AND 4 ON 6 -CIRCU IT
CONN ECTO RIDT/ODT OPEN8 FLASH ES
CHECK OPTIONAL
REFRIGERANT SWITCHES
CHECK REFRIGERANT
SWITCHES FOR LOSS OF
CHARGE OR HIGH HEAD
PRESSURE
CHECK
-
-NORMAL FLAME PRESENT
GAS FLOW
GAS PRESSURE
GAS VALVE
FLAME SENSOR
CHECK GAS VALVE
CHECK FOR SHORTS IN
FLAME SENSOR WIRING
0140G00533 REV A
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
23
*PG15*****41B* WIRING DIAGRAM
HIGH VOLTAGE!
M. F
ULTIPLE POWER SOURCES MAY BE PRESENTAILURE TO DO
SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH
D ALL .
ISCONNECTPOWER BEFORE SERVICING
.
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
24
*PG15*****41B* WIRING DIAGRAM
HIGH VOLTAGE!
M. F
ULTIPLE POWER SOURCES MAY BE PRESENTAILURE TO DO
SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH
D ALL .
ISCONNECTPOWER BEFORE SERVICING
.
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
25
MINIMUM CLEARANCES
48" MIN
12" MIN
3"
.
MIN
12" MIN
36" MIN
(FOR SERVICE)
NOTE: Roof overhang should be no more than 36".
RECOMMENDED FILTER SIZES
UNIT2 Ton2 1/2 Ton3 Ton3 1/2 / 4 Ton5 Ton
Min. Filter Size(1)20 x 20 x 1(1)20 x 25 x 1(1)25 x 25 x1(2)20 x 20 x 1(2)20 x 25 x 1
X = Outside of Temperature Rise Range - Not Recommended.
NOTE:
The shaded area indicates ranges in excess of maximum external static pressure allowable when heating. For satisfactory operation,
external static pressure should not exceed 0.5" w.c.
27
PACKAGE UNITS - DUAL FUEL & GAS
HOMEOWNER’S ROUTINE MAINTENANCE RECOMMENDATIONS
We strongly recommend a bi-annual maintenance checkup be performed
by a
qualified service agency before the heating and cooling seasons begin.
REPLACEOR CLEAN FILTER
IMPORTANT NOTE: Never operate unit without a filter installed as
dust and lint will build up on internal parts resulting in loss of
efficiency, equipment damage and possible fire.
A return air filter is not supplied with this unit; however, there must
be a means of filtering the return air. An indoor air filter must be
used with your comfort system. A properly maintained filter will
keep the indoor coil of your comfort system clean. A dirty coil could
cause poor operation and/or severe equipment damage.
The installer of your unit can tell you where your filter(s) are and
how to clean or replace them.
Check your return filter(s) at least once every two months. When
they are dirty, replace or clean as required. Disposable type
filters should be replaced. Reusable type filters may be cleaned.
NOTE: Reusable type filters should be washed with warm water,
dried completely and sprayed with an adhesive according to the
manufacturers recommendations.
You may want to ask your dealer about high efficiency filters. High
efficiency filters are available in both electronic and non-electronic
types. These filters can do a better job of catching small airborne
particles.
Improper filter maintenance is the most common cause of inadequate heating or cooling performance. Filters should be cleaned
(permanent) or replaced (disposable) every two months or as required. When replacing a filter, it must be replaced with a filter of
the same type and size and always make certain the air flow
arrows on the filter point in the proper direction.
CONDENSER, EVAPORATORAND INDUCED D RAFT MOTORS
The bearings on the air circulating blower motor, condenser motor
and the combustion fan motor are permanently lubricated and
require no further lubrication.
COMPRESSOR
The compressor motor is hermetically sealed and does not require additional oiling.
ANNUAL INSPECTION (QUALIFIED SERVICER ONLY)
Your package unit should be inspected by a qualified installer,
or service agency at least twice every year. This check should
be performed before the heating and cooling seasons begin.
This will ensure that adequate combustion air is being drawn
and the vent system is working properly. Particular attention
should be paid to the following items. Repair as necessary.
•Check physical support of the unit. Ensure it is sound
without any sagging, cracks, or gaps, around the base.
•Check for obvious signs of deterioration of the unit.
• Flue Hood and Combustion Air Inlet. Check for blockage
(wasp nest, etc.) and corrosion.
FLUE HOOD(QUALIFIED SERVICER ONLY)
•Return Air Connection. Check for physical soundness
and ensure that the connection is firmly sealed to the
package unit casing.
•Heat exchanger. Check for corrosion and/or obstructions
within the heat exchanger passageways.
•Burners. Check for proper ignition, burner flame, and
flame sense.
•Wiring. Check wires for damage.Check electrical
connections for tightness and/or corrosion.
•Filters. Check that filters are clean and in the proper
placement in the unit or duct system.
•Louvers. Inspect air inlet louvers inside the heat
exchanger compartments. Ensure the area is clean and
free of dirt and debris.
CLEAN OUTSIDE COIL (QUALIFIED SERVICER ONLY)
The outdoor coil should be inspected annually. It is important to
keep the outdoor coil clean. Dirt, leaves, or debris could restrict the
airflow. If cleaning of the outdoor coil becomes necessary, hire a
qualified servicer. Inexperienced people could easily puncture the
tubing in the coil.
BEFORE CALLING YOUR SERVICER
•Check the thermostat to confirm that it is properly set.
•Check the disconnect switch near the unit to confirm that
it is closed.
•Check the electrical panel for tripped circuit breakers or
failed fuses . Reset the circuit breakers or replace fuses
as necessary.
•Check for blockage of the indoor air inlets and outlets.
Confirm that they are open and have not been blocked by
objects (rugs, curtains or furniture).
•
Check for obstructions on the unit . Confirm that it has
not been covered on the sides or the top. Remove any
obstruction that can be safely removed. If the unit is
covered with dirt or debris, call a qualified servicer to
clean it.
•Check the filter. If it is dirty, clean or replace it.
28
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