PY3G
13 SEER
SINGLE PACKAGED AIR CONDITIONER AND
GAS FURNACE SYSTEM
WITH R---410A REFRIGERANT
SIZES 024 ---060
Owner’s Manual
A06079
Fig. 1 -- Unit PY3G
NOTE TO EQUIPMENT OWNER:
For your convenience, please record the model and serial numbers of your new equipment in the spaces
provided. This information, along with the installation data and dealer contact information, will be helpful
should your system require maintenance or service.
UNIT INFORMATION
Model # _____________________________________
Serial # ______________________________________
ACCESSORIES (List type and model #)
_____________________________________________
_____________________________________________
_____________________________________________
NOTE TO INSTALLER:
This manual must be left with the equipment owner.
INSTALLATION INFORMATION
Date Installed ________________________________
DEALERSHIP CONTACT INFORMATION
Company Name_______________________________
Address______________________________________
_____________________________________________
Phone Number _______________________________
Technician Name _____________________________
_____________________________________________
1
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory--authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit. consult local
building codes, the current editions of the National Fuel Gas
Code (NFGC) NFPA 54/ANSI Z223.1, and the National
Electrical Code (NEC) NFPA 70.
In Canada refer to the current editions of the National Standards
of Canada CAN/CSA--B149.1 and .2 Natural Gas and Propane
Installation codes, and Canadian Electrical Code CSA C22.1
Recognize safety information. This is the safety--alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury. Understand
these signal words: DANGER, WARNING, and CAUTION.
These words are used with the safety--alert symbol. DANGER
identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could
result in personal injury or death. CAUTION is used to identify
unsafe practices which may result in minor personal injury or
product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.
Note:Installer: Thismanualshould beleftwith theequipmentuser.
!
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
What to do if you smell gas:
1. Do not try to light any appliance.
2. Do not touchany electricalswitch;do notuse any phonein
your building.
3. Leave the building immediately.
4. Immediately call your gas supplier from a nearby phone.
Follow the gas supplier’s instructions.
5. If you cannot reach your gas supplier, call the fire
department.
!
.
ELECTRICAL SHOCK HAZARD
Failure to follow thiswarning could result in personal injury
and/or death.
Before performing recommended maintenance, be sure the
main power switch to unit is turned off and lock--out tag is
installed.
!
WARNING
WARNING
WARNING
!
WARNING
FIRE,EXPLOSION, ELECTRICALSHOCK HAZARD
Failure to follow this warning could resultin personal injury,
death or property damage.
Installation and servicing of this equipment can be hazardous
due to mechanical and electrical components. Only trained
and qualified personnel should install, repair, or service this
equipment.
!
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
Do not store or use combustible materials, gasoline, or other
flammable vapors and liquids in the vicinity of this or any
other appliance.
FIRE,EXPLOSION,ELECTRICAL SHOCKHAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Do not use this unit if any part has been under water.
Immediately call a qualified service technician to inspect the
unit and to replace any part of the control system which has
been under water.
WARNING
!
WARNING
FIRE,EXPLOSION,ELECTRICAL SHOCKHAZARD
Failure to follow this warning could resultin personal injury,
death and/or property damage.
1. Do not turn off the electrical power to unit without first
turning off the gas supply.
2. Before attempting to start the gas heating section,
familiarize yourself with all the procedures that must be
followed.
!
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
Do not attempt to light by hand.
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
When removing access panels or performing maintenance
functions insideyour unit, beawareof sharp sheet metal parts
and screws. Although special care is taken to reduce sharp
edges to a minimum, be extremely careful when handling
parts or reaching into the unit.
WARNING
CAUTION
2
UNIT INTRODUCTION
This PY3G unit isa smallpackaged gasheat/electric cooling system
that canutilize the comfort of gasheating packaged along with efficient electric air conditioning. This unit uses R--410A, the ozone
friendly refrigerant for cooling.
Starting or Shutting Off Unit
Note:Your combination heating/cooling unit is equipped with an
automatic direct spark ignition and power combustion blower.
To start unit gas heat:
Refer to Fig. 2 for location of unit front access panel. Refer to Fig.
3 forlocation ofgas valve. Referto Fig. 4 while proceeding with the
following steps.
1. Setthetemperatureselector on room thermostatto thelowest
temperature setting and set system switch to HEAT.
2. Close the external manual gas shutoff valve.
3. Turn off the electrical supply to the unit.
4. Remove the front access panel with a 5/16--in. nut driver.
5. Move theselectorswitchon theinternalgasvalveto theOFF
position and wait 5 minutes.
6. Move the selector switch onthe internal gas valve to the ON
position.
7. Replace the front access panel.
8. Turn on the electrical supply to unit.
9. Open the external manual gas shutoff valve.
10. Set the temperature selector on room thermostat slightly
above room temperature to start unit. The induced--draft
combustion air fan will start. Main gas valve will open and
main burners should ignite within 5 seconds. If the burner
does not light within 5 seconds, the ignition module will go
into a Retry Mode after a period of approximately 22
seconds (following the 5--second ignition period). If the
burners do not light within 15 minutes of the initial call for
heat, there is a lockout.
11. Set the temperature selector on room thermostat to desired
setting.
ACCESS PANEL
FILTER ACCESS
PANEL*
*For accessory filter rack.
A05121
Fig. 2 -- Accessory Filter Rack Access Panel
WARNING
!
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
1. If the main burnersfail to light, or the blowerfails to start,
shutdown gas heatingsectionand call yourdealerforservice.
2. Never attempt to manually light the main burners on unit
with a match, lighter, or any other flame. If the electric
sparking device fails to light the main burners, refer to the
following shutdown procedures,then call yourdealerassoon
as possible.
To shut off unit gas heat:
!
FIRE, EXPLOSION, ELECTRICAL SHOCK
HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
Do not turn off the electrical power to unit without first
turning off the gas supply.
Note:If the unit is being shut down because of a malfunction, call
your dealer as soon as possible.
Should overheatingoccur orthe gas supply fail to shutoff, shut off
the external manual gas valve tothe unitbefore shutting offthe electrical supply. Do not use this unit if any part has been under water.
Immediately call a qualified service technician to inspect the unit
and to replace any part of the control system and any gas control
which has been under water.
Refer to Fig. 5 while proceeding with the following steps.
1. Set the temperature selector on room thermostat to lowest
temperature setting and set system SWITCH to OFF.
2. Close the external manual shutoff valve.
3. Turn off the electrical power supply to the unit.
4. Remove the front access panel.
5. Movetheselectorswitch ontheinternalgas valveto theOFF
position.
6. Replace the front access panel.
To start unit electric cooling:
Refer to Fig. 6 while proceeding with the following steps.
1. Set the temperature selector on room thermostat to highest
temperature setting and set system SWITCH to OFF.
2. Close the external manual shutoff valve.
3. Turn off the electrical power supply to the unit.
4. Remove the front access panel.
5. Move theselectorswitchon theinternalgasvalveto theOFF
position.
6. Replace the front access panel
7. Restore electrical powerto the unitand setsystem switch to
COOL.
8. Set thetemperature selectoron roomthermostat slightly below the room temperature to start unit.
To shut off unit electric cooling:
Refer to Fig. 7 while proceeding with the following steps.
1. Set the temperature selector on room thermostat to highest
temperature setting and set system SWITCH to OFF.
2. Close the external manual shutoff valve.
3. Turn off the electrical power supply to the unit.
3
WARNING
OPERATING YOUR UNIT
The operation of your unit is controlled by the indoor temperature
control (thermostat). You simply adjust the thermostat and it maintainstheindoortemperatureat the levelyou select. Mostthermostats
of heating andcooling systems have 3 controls: a temperature controlselector, a FAN control, and a SYSTEM or MODEcontrol.Refer to your thermostat owner’s manual for more information.
To better protect your investmentand toeliminate unnecessary service calls, familiarize yourself with the following facts:
Cooling Mode
With theSYSTEM control set to COOL,your unit will run incooling mode until the indoor temperature is lowered to the level you
have selected. On extremely hot days, your unit willrun for longer
periods at a time and have shorter “off” periods than on moderate
days.
Gas Heat Mode
With theSYSTEM orMODE control ofyour indoor thermostat set
toHEAT, yourunitwillrun inheatingmode until room temperature
is raised to the level you have selected. On cold days and nights,
your system will typically run for longer periods of time and have
shorter “off” periods than on moderate days.
MAINTENANCE AND SERVICE
This section discusses maintenance that should be performed on
your system. Most maintenance shouldbe performedby your dealer. You, as theowner,may wish to handle some minor maintenance
for your new unit.
Routine Maintenance
All routine maintenance should behandled by skilled, experienced
personnel. Your dealer can help youestablish astandard procedure.
For yoursafety,keep theunit area clearand freeof combustiblematerials, gasoline, and other flammable liquids and vapors.
To assureproper functioning ofthe unit, flow ofcondenser airmust
not be obstructed from reaching the unit. Clearance from the top of
the unitis 48 in. (1219 mm). Clearance of atleast36 in. (914 mm)
is required on sides except thepower entry side (42 in. [1067 mm]
clearance) and the ductside (12 in. [305 mm] minimum clearance).
Also, ensure that the return--air duct connection (s) is physically
sound, is sealed to the furnace casing, and terminates outside the
space containing the furnace.
Maintenance and Care for the Equipment Owner
Before performing equipment maintenance yourself, please carefully consider the following:
!
FIRE, EXPLOSION, ELECTRICAL SHOCK AND
CUT HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
1. Turn off gas supply first, then all electrical power to your
unit and install lock--out tag before servicing orperforming maintenance.
2. When removing access panels orperforming maintenance
functions inside your unit, be aware of sharp sheet metal
parts and screws. Although special care is taken to reduce
sharp edges to a minimum, be extremely careful when
handling parts or reaching into the unit. Wear safety
glasses, gloves, and appropriate protective clothing.
Air Filters
The air filter(s)should bechecked every 3 or 4 weeksand changed
or cleaned whenever it becomes dirty. Dirty filters produce exces-
WARNING
sivestress onthe blowermotor andcan cause themotor tooverheat
and shut down.
This unit must have air filters in place before it can be operated.
These filterscan be locatedin one of atleast two places. Inmany applications, the installer will provide return air filter grilles mounted
on the wall orceiling of the conditioned structure. In the instanceof
filter grilles, the filterscan simply beremoved from the grilleand replaced.
The other typical application is an accessory filterrack installed inside the unit itself. The following information is given to assist in
changing filters used in these internal filter racks.
Table 1 indicates the correct indoor filter size for your unit. Refer
to Fig.2 to accessfilters installedin the accessoryfilter rack.If using
an Accessory Filter Rack, refer to the Installation Instructions provided with it for correct filter sizes and quantities.
Table 1—Indoor Air Filter Data
Unit Size Filter Size
PY3G024--- 030 20x24x1 (508x610x25 mm)
PY3G036 24x30x1 (610x762x25 mm)
PY3G042--- PY3G060 24x36x1 (610x914x25 mm)
Burners
Fig. 3 -- Gas Heating/Electric Cooling Unit with Access Panel
Removed
To replace or inspect filters in accessory filter rack (See Fig. 2):
1. Remove the filter access panel using a 5/16--in. nut driver.
2. Remove thefilter(s) by pulling it outofthe unit.If thefilter(s)
is dirty, clean or replace with a new one.
When installing the new filter(s),note the direction ofthe airflow arrows on the filter frame.
If you have difficulty locating your air filter(s) or have questions
concerning proper filter maintenance, contact your dealer for instructions. When replacing filters,always usethe samesize and type
of filter that was supplied originally by the installer.
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in property damage.
Never operate your unit without filters in place. An
accumulation ofdust andlint on internalparts ofyour unitcan
cause loss of efficiency and blower motor and/or compressor
damage.
4
CAUTION
Gas Valve
Flue
Hood
A09588
Fans and Fan
Periodically check the condition of fanwheels and housings andfan
motor shaft bearings. Contact your dealer for therequired annual
maintenance.
Exchanger
Heat
To ensure dependable and efficient heating operation, the heat ex-
changershould be checked by a qualified maintenance person before each heating season, and cleaned when necessary. This checkout should not be attempted by anyone not having the required
expertiseand equipment toproperlydo thejob.Contact your dealer
for the required periodic maintenance.
Indoor and Outdoor
Cleaning of thecoils should only be done by qualified serviceper-
sonnel. Contact your dealer for the required annual maintenance.
Condensate
The drain pan and condensate drain line should be checked and
cleaned atthe same time thecooling coils are checked by your dealer.
Compressor
Allcompressorsarefactory shippedwitha normal chargeof thecor-
rect type of refrigeration grade oil. A compressor should rarely require additional oil.
Condenser (Outdoor)
Motors
Drain
!
Coils
Fan
WARNING
Unit Panels
Afterperforming any maintenance orservice on theunit,be sure all
panels are fastened securely in place to prevent rain from entering
unitcabinetandto preventdisruptionof the correctunit airflowpattern.
Combustion Area and Vent
For proper and safe operation,the furnaceneeds air forcombustion
and ventilation. The air openings, on the furnace, the air openings
to the area in which the furnace isinstalled, and the spacing around
the furnace must not be blocked or obstructed.
The combustion area and vent system should be inspected visually
before each heating season. The normal accumulation of dirt, soot,
rust, and scale can result in loss of efficiencyand improper performance if allowed to build up. This inspection should be done by a
trained service person.
!
FIRE, EXPLOSION HAZARD
Failure to follow thiswarning could result in personal injury,
death and/or property damage.
If your unit makes an especially loud noise when the main
burners are ignited, shut down the heating section and call
your dealer.
System
WARNING
PERSONAL INJURY AND UNIT DAMAGE HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Do not insert sticks, screwdrivers, or any other objects into
revolving fan blades.
The fan must be keptfree of all obstructionsto ensure propercooling. Contact your dealer for any required service.
Electrical Controls and W
Electricalcontrolsaredifficultto checkwithout properinstrumenta-
tion. If there are any discrepancies in the operating cycle, contact
your local dealer and request service.
Refrigerant
Therefrigerantcircuitisdifficulttocheckforleakswithouttheprop-
erequipment.If inadequatecoolingis suspected, contact yourlocal
dealer for service.
Circuit
!
EXPLOSION AND ENVIRONMENTAL HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
System under pressure. Relieve pressure and recover all
refrigerant before system repair orfinal unit disposal. Useall
service ports and open all flow--control devices, including
solenoid valves.
iring
WARNING
!
BURN HAZARD
Failure to follow this caution may result in personal injury.
Componentsin heating sectionmay behot afterunit hasbeen
started up. When observing flame, be careful not to get close
to or touch heating components.
Regular Dealer Maintenance
In addition to the type of routine maintenance you might be willing
to perform, your unit should be inspected regularly by a properly
trained service technician. An inspection (preferably each year, but
at least every other year) should include the following:
1. Inspection of all flue product passages--including the burners, heat exchanger, and flue collector box, Mare sure the
burnerflames are bluein color andin proper adjustment.Refer to Fig. 8 for burner flame.
2. Inspection of all combustion--and ventilation--air passages
and openings.
3. Closeinspection ofallgaspipesleadingtoand inside ofyour
unit.
4. Inspection and, if required, cleaning of the outdoor and
indoor coils.
5. Inspection and, if required, cleaning of the indoor coilcondensate drain pan.
CAUTION
5
55
MAIN
C
L
O
S
E
ON
OFF
STEP 1 STEP 2
STEP 4
STEP 3
STEP 5
STEP 6
MAIN
STEP 8
ON
OFF
O
P
E
N
STEP 9
Fig. 4 -- To Start Unit Gas Heat
STEP 7
72
STEP 10
A07662
6
55
MAIN
C
L
O
S
E
ON
OFF
STEP 1
STEP 4
STEP 2
STEP 3
STEP 5
STEP 6
A07663
Fig. 5 -- To Shut--off Unit Gas Heat
7
90
MAIN
C
L
O
S
E
ON
OFF
STEP 1
STEP 4
STEP 2
STEP 3
STEP 5
MAIN
ON
STEP 6
STEP 8
Fig. 6 -- To Start Unit Electric Cooling
8
OFF
STEP 7
72
A07796
90
MAIN
C
L
O
S
E
ON
OFF
STEP 1
Fig. 7 -- To Shut--off Unit Electric Cooling
BURNER FLAME
BURNER
MANIFOLD
C99021
Fig. 8 -- Monoport Burner
6. Inspection andcleaning ofblowerwheelhousing andmotor.
7. Inspection of all supply--air and return--air ducts for leaks,
obstructions, and insulation integrity. Any problems found
should be resolved at this time.
8. Inspection oftheunitbaseto ensurethat no cracks,gaps,etc.,
exist which may cause a hazardous condition.
9. Inspection of the unit casing for signs of deterioration.
10. Inspection of all electrical wiring and components to assure
proper connection.
11. Inspection for leaks inthe refrigerant circuit. Pressure check
to determine appropriate refrigerant charge.
12. Operational check of the unit to determine working
conditions.Repairor adjustmentshouldbe made at thistime.
Your servicingdealermay offeran economicalservice contractthat
covers seasonal inspections. Ask for further details.
Completeservice instructionscan be found in the unit Installation,
Start--up and Service Instructions.
STEP 2
STEP 3
Warranty Certificate
Your unit has a limited warranty. Be sure to read the warranty carefully to determine the coverage for your unit.
Before you call for service...
...check for several easily--solved problems.
If insufficient heating or cooling is suspected:
( ) Check for sufficient airflow. Check the air filter for dirt. Check
for blocked return--air or supply--air grilles. Be sure they are open
and unobstructed. Ifthese checks do not reveal thecause, call your
servicing dealer.
If your unit is not operating at all, check the following list for
easy solutions:
( ) Check to be sure that your thermostat temperature selector is
set below the indoor temperature during the cooling season or
above the indoor temperature during heating season. Be sure the
SYSTEM switch orMODE control is in the COOL orHEAT position and not in the OFF position.
( ) If your unit still fails to operate, call your servicing dealer for
troubleshooting and repairs. Specify the modeland serial numbers
of yourunit. (Recordthem inthis manual in the space provided.) If
the dealer knows exactly which unit you have, he may be able to
offer suggestions over the phone, or save valuable time through
knowledgeable preparation for the service call.
In Case of Trouble
Ifyou perform the stepsabove and unitperformanceis stillunsatisfactory, shut off the unit and call your dealer.
A07797
9
E2009 Payne Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 09/09
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
10
C a t al o g No : O G --- P Y 3 G --- 0 3
Replaces: NEW
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