Amana PGA**C User manual

Installation Instructions
January1998(1) 10692406
Amana
Fayetteville, TN 37334
As a professional installer you have an obligation to
know the product better than the customer. This in-
cludes all safety precautions and related items.
Priortoactualinstallation,thoroughlyfamiliarizeyour-
self with this Instruction Manual. Pay special attention
toallsafetywarnings.Oftenduringinstallationorrepair
it is possible to place yourself in a position which is
more hazardous than when the unit is in operation.
Remember, it is your responsibility to install the
productsafelyand to knowitwell enough tobeable to
instruct a customer in its safe use.
Safety is a matter of common sense...a matter of
thinking before acting. Most dealers have a list of
specific good safety practices...follow them.
TheprecautionslistedinthisInstallationManualshould
notsupersedeexistingpracticesbutshouldbeconsid-
ered as supplemental information.
ATTENTION INSTALLING PERSONNEL
PGA**C, PGB**C and
PGD**C Single Package
Gas-Electric Heating
and Cooling Unit
AmanaForcedAirCentralUnitsDesignCompliesWithRequirementsEmbod-
iedin TheAmerican National Standard / National Standard of Canada Shown
Below.
ANSI Z21.47•CAN/CGA-2.3 Central Furnaces
Affix this manual, Specification Sheet and User Informa-
tion manual adjacent to the unit.
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION
Contents
ATTENTION INSTALLING PERSONNEL ............. 1
I. Safety Information ............................................ 2
II. General Information......................................... 3
III. Rigging and Handling.................................... 3
IV. Gas Piping....................................................... 4
V. Electrical Wiring............................................... 7
Vl. Circulating Air and Filters.............................. 8
VII. Venting ........................................................... 9
VIII. Condensate Drain......................................... 9
IX. Heating Sequence of Operations .................. 9
X. Cooling Sequence of Operations ................. 10
Xl. Startup and Adjustment............................... 10
XII. Maintenance ................................................ 13
XIII. Accessories and Functional Parts ............ 15
A
higher standard of comfor
t
Heating ¡Air Conditioning®

2
I. Safety Information
IMPORTANT
TO THE INSTALLER
Before installing this unit please read this manual and the
Specification Sheet to familiarize yourself on the specific
itemswhichmustbeadheredtosuchasmaximumexternal
static pressure to unit, air temperature rise, minimum or
maximum CFM and motor speed connections.
TO THE OWNER
It is important to complete the owner registration card and
mailitimmediately.ThiswillassistAmanaincontactingyou
if any service or warranty information should change in the
future. When completing the registration card, be sure to
includetheModel,ManufacturingandSerialNumbers,plus
the installation date.
Thewarranty certificateis alsosupplied withthe unit.Read
the warranty carefully and note what is covered. Keep the
warranty certificate in a safe place so you can find it if
necessary.
If additional operating instructions are required, call the
dealerwherethepurchasewasmade.Keepthisliteraturein
a safe place for future reference.
WARNING
Topreventdeath,personalinjuryorproperty
damageduetofireorexplosion, installation
proceduresinthismanualmustbefollowed
exactly.
WARNING
Shouldoverheatingoccurorthegassupply
fail to shut off, turn off the manual gas
control valve to the unit before shutting off
the electrical supply.
WARNING
Topreventdeath,personalinjuryorproperty
damage, do not use this unit if any part of
theunithasbeenunderwater.Immediately
callaqualifiedservicetechniciantoinspect
the unit and to replace any part of the
control system and any gas control which
has been under water.
If you smell gas:
• Do not try to light appliance.
• Do not touch any electrical switch: do not use any
phone in building.
• Immediately call gas supplier from a neighbor’s
phone. Follow gas supplier’s instructions.
• If gas supplier cannot be reached, call fire depart-
ment.
WARNING
To prevent death, personal injury, or
property damage due to improper
installation, adjustments, alterations,
service or maintenance, when servicing or
performingmaintenancetothisunitconsult
this manual, service manual, qualified
installer, service agency or gas supplier.
WARNING
This product contains or produces a
chemical(s) which may cause death or
seriousillnessandwhich areknownbythe
State of California to cause cancer, birth
defects or other reproductive harm.
IMPORTANT NOTE: This unit must not be used as a
“construction heater” during the finishing phases of
construction on a new structure. This type of use may
result in premature failure of the unit due to extremely
low return air temperatures and exposure to very dirty
atmospheres.
LOCATING THE UNIT
WARNING
Toprevent death,personalinjury,property
damage or equipment damage, the
following points must be observed when
installing the unit.
ALL INSTALLATIONS:
•Forproperflamepatternwithintheheatexchangerand
propercondensatedrainage,theunitmustbemounted
level.
•Theflueoutlethoodmustbeatleast12inchesfromany
openingthroughwhichfluegasescouldenterabuilding,
andatleastthreefeetaboveanyforcedairinletlocated
withintenfeet.Theeconomizer/manualfreshairintake/
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 contami-
nated by compounds containing chlorine or fluorine.
Common sources of such compounds include swim-
mingpoolsandchlorinebleaches,paintstripper,adhe-
sives, paints, varnishes, sealers, waxes (which are not
yet dried) and solvents used during construction and
remodeling. Various commercial and industrial pro-
cesses may also be sources of chlorine/fluorine com-
pounds.
•To avoid possible illness or death of the building occu-
pants, do NOT locate outside air intake device (econo-
mizer, manual fresh air intake, motorized fresh air
intake)tooclosetoanexhaustoutlet,gasventtermina-
tion, or plumbing vent outlet. For specific distances
required, consult local codes.

3
•AllowclearancesfromtheenclosureasshowninSpeci-
fication Sheet for fire protection, proper operation, and
service access. These clearances must be perma-
nentlymaintained.
•The combustion air inlet and flue outlet hoods on the
sideoftheunitmustneverbeobstructed.Ifused,donot
allow the economizer/manual fresh air damper/ motor-
ized fresh air damper to become blocked by snow or
debris. In some climates or locations, it may be neces-
sary to elevate the unit to avoid these problems.
•When the unit is heating, the temperature of the return
airenteringtheunitmustbebetween50°Fand100° F.
•Provisionsmustbemadeforadequatecombustionand
ventilation air in accordance with Section 5.3, Air for
Combustion and Ventilation, of the National Fuel Gas
Code,ANSIZ223.1, or Sections7.2,7.3or 7.4 ofCAN/
CGA B149 Installation Codes, or applicable provisions
of the local building codes.
GROUND LEVEL INSTALLATIONS ONLY:
•Whenthe unit isinstalled ontheground adjacentto the
building, a level concrete (or equal) base is recom-
mended.Prepare a basethe same physicalsize as the
unit or slightly larger and 3 inches thick.
•The base should also be located where no runoff of
water from higher ground can collect in the unit.
ROOFTOP INSTALLATIONS ONLY:
• To avoid possible personal injury or property damage,
theroofmusthavesufficientstructuralstrengthtocarry
the weight of the unit(s) and snow or water loads as
required by local codes.
• The unit may be installed directly on wood floors or on
Class A, Class B, or Class C roof covering material.
• Toavoidpossiblepersonalinjury,asafe,flatsurfacefor
service personnel should be provided.
NOTE: Refer to Specification Sheet shipped with the
unit or the unit Rating Plate for approved duct orienta-
tion, before using down discharge openings.
II. General Information
WARNING
Topreventdeath,personalinjuryorproperty
damage due to fire, explosions, smoke,
soot, condensation, electric shock or
carbonmonoxide,thisunitmustbeproperly
installed, repaired, operated and
maintained.
This unit is approved only for an outdoor installation.
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
buildingcodesandordinances,orintheirabsence,withthe
latesteditionoftheNationalFuelGasCode.(ANSIZ223.1)
and National Standard of Canada (CAN/CGA-2.3).
The heating and cooling capacities of the unit should be
greaterthanorequaltothedesignheatingandcoolingloads
of the area to be conditioned. The loads should be calcu-
lated by an approved method or in accordance with
A.S.H.R.A.E. Guide or Manual J - Load Calculations pub-
lished by the Air Conditioning Contractors of America.
Obtain from:
American National Standards Institute
1430Broadway
New York, NY 10018
TRANSPORTATION DAMAGE
All units are securely packed in shipping containers ap-
proved by the International Safe Transit Association. The
cartonshouldbecheckeduponarrivalforexternaldamage.
Ifdamageisfound,arequestforinspectionbycarrieragent
should be made in writing immediately.
The unit should be carefully inspected upon arrival for
damage and bolts or screws which may have loosened in
transit. In the event of damage, the consignee should:
1.Makenotationondeliveryreceiptofanyvisibledamage
to shipment or container.
2. Notify carrier promptly and request an inspection.
3.Incaseofconcealeddamage,carriershouldbenotified
as soon as possible-preferably within 5 days.
4. File the claim with the following supporting documents
within the 9 month statute of limitations.
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 repre-
sentativeatthetimedamageisreportedtothecarrier.
The carrier is responsible for making prompt inspec-
tion of damage and for a thorough investigation of
each claim. The distributor or manufacturer will not
accept claims from dealers for transportation dam-
age.
NOTE:Wheninspectingtheunitfortransportationdamage,
remove all packaging materials. Recycle or dispose the
packaging material according to local codes.
III. Rigging and Handling
CAUTION
Topreventpropertydamage,theunitshould
remain in an upright position during all
riggingandmovingoperations.Tofacilitate
lifting and moving when a crane is used,
place the unit in an adequate cable sling.
NOTE:RefertoSpecificationSheetshippedwiththeunitor
the unit Rating Plate for approved duct orientation, before
using down discharge openings.
Important: If using bottom discharge with roof curb, duct-
work should be attached to the curb prior to installing the
unit. Ductwork dimensions are shown in roof curb installa-
tion instructions.

4
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.
If using a fork lift, see Figure 1 for location of fork prongs.
Make certain prongs support unit weight.
Fork Lift From
Back Of Unit
Figure 1
Rigging
IV. Gas Piping
IMPORTANT NOTE: This unit is factory set to operate on
natural gas at the altitudes shown on the rating plate.
WARNING
Topreventdeath,personalinjuryorproperty
damage when either using propane gas
alone or at higher altitudes, obtain and
installtheproperconversionkit(s). Failure
to do so can result in unsatisfactory
operationand/orequipmentdamage. High
altitude kits are for U.S. installations only
and are not approved for use in Canada.
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.
Inlet Gas Pressure
Natural Min. 5.0" W.C., Max. 10.0" W.C.
Propane Min. 11.0" W.C., Max. 13.0" W.C.
Inlet Gas Pressure Must Not Exceed the Maximum Value Shown in
Table Above.
Table 1
The minimum supply pressure should not vary from that
showninthetableabovebecausethiscouldpreventtheunit
fromhavingdependableignition.Inaddition,gasinputtothe
burnersmustnotexceedtheratedinputshownontherating
plate. Overfiring of the unit could result in premature heat
exchanger failure.
HIGH ALTITUDE DERATE (US. INSTALLATIONS
ONLY)
IMPORTANT NOTE: The gas/electric units will naturally
derate itself 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
inchesW.C.ofthatlistedonthe“SpecificationSheet”forthe
fuelused.Atallaltitudesandwitheitherfuel,theairtempera-
ture rise must be within the range listed on the unit name-
plate.
Refer to the “Specification Sheet” for kits for conversion
from natural gas to propane gas and for altitude adjust-
ments.
PIPING
IMPORTANT NOTE: To avoid possible unsatisfactory op-
eration or equipment damage due to under firing of equip-
ment,donotundersizethenatural/propanegaspipingfrom
themeter/tanktotheunit.Whensizingatrunklineasshown
in Table 2, include all appliances on that line that could be
operatedsimultaneously.
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.
Thegas lineinstallationmust complywith localcodes, or in
the absence of local codes, with the latest edition of the
National Fuel Gas Code (ANSI Z223.1).
NATURAL GAS CONNECTION
Natural Gas Capacity of Pipe
in Cubic Feet of Gas Per Hour (CFH)
Length of Nominal Black Pipe Size (inches)
Pipe in Feet 1/2 3/4 1 1 1/4 1 1/2
10 132 278 520 1050 1600
20 92 190 350 730 1100
30 73 152 285 590 980
40 63 130 245 500 760
50 56 115 215 440 670
60 50 105 195 400 610
70 46 96 180 370 560
80 43 90 170 350 530
90 40 84 160 320 490
100 38 79 150 305 460
Pressure = .50 PSIG or less and Pressure Drop of 0.3" W.C. (Based
on 0.60 Specific Gravity Gas)
CFH = BTUH Furnace Input
Heating Value of Gas (BTU/Cubic Foot)
Table 2

5
Refer to Figure 2 for the general layout at the unit. The
following rules apply:
1. Use black iron or steel pipe and fittings for the building
piping.
2. Use pipe joint compound on male threads only. Pipe
jointcompoundmustberesistanttotheactionofthefuel
used.
3. Use ground joint unions.
4. Install a drip leg to trap dirt and moisture before it can
enterthe gas valve.The drip leg must bea minimum of
three inches long.
5.Usetwopipe wrenches whenmakingconnectionto 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.
8.Theunitmustbeconnectedtothebuildingpipingbyone
of the following methods:
• Rigid metallic pipe and fittings
• Semirigid metallic tubing and metallic fittings (Alumi-
num alloy tubing must not be used in exterior loca-
tions)
• Listedgasappliance connectorsusedin accordance
withthetermsoftheirlistingthatarecompletelyinthe
same room as the equipment
• In the prior two methods above the connector or
tubing must be protected from physical and thermal
damage.Aluminumalloytubingandconnectorsmust
becoated to protect against externalcorrosion when
in contact with masonry, plaster or insulation or are
subjecttorepeatedwettingsbyliquids(water-notrain
water, detergents or sewage)
Manual
Shut-Off
Valve
Gas
Valve
Drip Leg
Ground Joint Union
(Installed Ahead Of Gas Valve) Reduce coupling 1/2" x 1/8",
with 1/8" pipe plug to measure
line gas pressure.
Figure 2
Proper Piping Practice
CHECKING THE GAS PIPING
CAUTION
To prevent personal injury or property
damage due to fire, the following
instructions must be performed regarding
gas connections and pressure testing:
• The unit and its gas connections must be
leak tested before placing in operation.
Because of the danger of explosion or
fire, never use a match or open flame to
testforleaks.Neverexceedspecifiedpres-
sures for testing. Higher pressure may
damage gas valve and cause overfiring
which may result in premature heat ex-
change failure.
• This unit and its shut-off valve must be
disconnected from the gas supply during
anypressuretestingofthatsystemattest
pressures in excess of 1/2 PSIG (3.48
kPa).
• This unit must be isolated from the gas
supplysystembyclosingitsmanualshut-
off valve during any pressure testing of
thegassupplypiping systemattestpres-
sures equal to or less than 1/2 PSIG
(3.48kPa).
WARNING
To avoid personal injury or property
damage, be sure there is no open flame in
the vicinity during air bleeding procedure.
Therewill be airin the gas supply lineafter testing forleaks
on a new installation. Therefore, the air must be bled from
theline by looseningtheground jointunionuntil pure gasis
expelled.Tightenunionandwaitforfiveminutesuntilallgas
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 discon-
nect switch for the unit.

6
TANKS AND PIPING FOR PROPANE GAS
INSTALLATIONS
WARNING
Topreventdeath,personalinjuryorproperty
damage due to fire or explosion caused by
a propane gas leak, install a gas detecting
warning device. Since rust can reduce the
level of odorant in propane gas, a gas
detectingwarningdeviceistheonlyreliable
waytodetectapropanegasleak.Contacta
localpropanegassupplieraboutinstalling
a gas detecting warning device.
IMPORTANT NOTE: Propane gas conversion
kits must be installed to convert units to propane
gas. See Specification Sheet for kit part number
for this model.
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 10 inch W.C. at the unit manifold with all gas
appliances in operation. Maintaining proper gas pressure
depends on three main factors:
1. Vaporizationrate,whichdependson(a)temperatureof
the liquid, and (b) wetted surface area of the container
or containers.
2. Proper pressure regulation.
3. Pressuredropinlinesbetweenregulators,andbetween
second stage regulator and the appliance. Pipe size
requiredwilldependonlengthofpiperunandtotalload
of all appliances.
Completeinformationregardingtanksizingforvaporization,
recommendedregulatorsettingsandpipesizingisavailable
frommostregulatormanufacturersandpropanegassuppli-
ers.
Since propane gas will quickly dissolve white lead or most
standard commercial compounds, special pipe dope must
beused.Shellacbasecompoundsresistanttotheactionsof
liquefiedpetroleumgasessuchasGasolac,Stalactic,Clyde’s
or John Crane are satisfactory.
PleaserefertoFigure3fortypicalpropanegasinstallations.
Figure 3
Typical Propane Gas Piping
Table 3
Propane Gas Pipe Sizing
WARNING
To prevent death, serious personal injury
orpropertydamageduetofireorexplosion
causedbyapropanegasleak, installagas
detecting warning device.
If the propane gas unit is installed in an
excavated area or a confined space, a
warning device is required due to:
• Propanegasisheavierthan air and any
leaking gas can settle in any low areas
or confined spaces.
• Propanegasodorantmayfade,making
the gas undetectable except with a
warning device.
If the presence of gas is suspected, follow
the instructions on Page 2 of this manual.

7
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, if an external
source is utilized.
WARNING
To avoid death or personal injury due to
electrical shock, wiring to the unit must be
properly grounded.
CAUTION
Toavoidpersonalinjuryorproperty damage
due to fire, use only copper conductors.
CAUTION
To prevent improper and dangerous
operation due to wiring errors, label all
wirespriortodisconnectionwhenservicing
controls. Verify proper operation after
servicing.
Thebest protectionforthe wiringis thelowest rated fuseor
circuit breaker which will supply power to the unit during
normal operation without nuisance trips. Such a device will
provide maximum circuit protection. DO NOT EXCEED
THE MAXIMUM OVERCURRENT DEVICE SIZE SHOWN
ON UNIT DATA PLATE.
All line voltage connections must be made through weath-
erprooffittings. Allexteriorpowersupplyandgroundwiring
must be in approved weatherproof conduit. Low voltage
wiringfromthe unit controlpanelto the thermostatrequires
coded cable. For ground level and rooftop wiring refer to
Figure 5.
V. Electrical Wiring
LOCATING THE THERMOSTAT
Thermostat should be mounted 5 feet above the floor, on a
vibrationfreeinsidewallinaroomorahallwaythathasgood
air circulation.
Movementofairshouldnotbeobstructedbyfurniture,door,
draperies,etc.Thethermostatshouldnotbemountedwhere
itwillbeaffectedbydrafts,hotorcoldwaterpipesorairducts
in walls, radiant heat from fireplace, lamps, the sun, televi-
sion, etc. Consult the Instruction Sheet packaged with
thermostat for mounting instructions.
All units have one stage of heating and one stage of me-
chanicalcooling.Unitswhichwillhaveeconomizersmayuse
thermostats with one or two stages of cooling.
WARNING
To avoid death or personal injury due to
electrical shock, disconnect the electrical
power before electrically connecting the
unit.
Theunitsaredesignedforoperationon60hertzcurrentand
atvoltagesasshownontheratingplate.Allinternalwiringin
the unit is complete. It is necessary to bring in the power
supply to the contactoras shown on the unitwiring diagram
which is supplied with each unit. 24 volt wiring must be
connected between the unit control panel and the room
thermostat. Refer to Figure 4 for location of low voltage
terminal board and Figure 6 for proper thermostat wiring.
3DI UNUSED
NEUTRAL
CX
XFMR SECMOTOR
LEADS
12
SS
COOL
HEAT
S
CIR BLOWER
F1
HEAT FAN
DELAY
OFF
120
150
06
C
CG YWR
Y
Low Voltage Terminal Board
60
Figure 4
Low Voltage Control Board

8
G
Y
W
R
R
W
Y
G
From
Unit
Figure 6
Typical Thermostat and Unit 24 V Wiring
Hookup
Vl. Circulating Air and Filters
AIRFLOW CONVERSION
Units can easily be converted from horizontal to vertical
airflowdelivery.
Unitswillshipfromthefactoryreadyforhorizontalairflow.If
conversion to vertical airflow is necessary, proceed as
follows:
NOTE:RefertoSpecificationSheetshippedwiththeunitor
the unit Rating Plate for approved duct orientation, before
using down discharge openings.
•Cut insulation around bottom openings and remove
panels from the bottom of the unit, saving the screws
holding the panels in place.
•Use horizontal duct cover kit.
Figure 7
Horizontal Duct Cover Kit
DUCTWORK
Ductsystemsandregistersizesmustbeproperlydesigned
fortheC.F.M.andexternalstaticpressureratingoftheunit.
Ductwork should be designed in accordance with the rec-
ommended methods of Air Conditioning Contractors of
AmericaManualD(Residential)orManualQ(Commercial).
Electrical Power Directly To Junction Box
Electrical Power Routed Through
Bottom of Unit
Figure 5
Typical Electrical Wiring
UNIT VOLTAGE
The unit transformer is factory connected for 230V opera-
tion. If the unit is to operate on 208V, reconnect the trans-
formerprimaryleadandinduceddraftblowermotorleadsas
shown on the unit wiring diagram.
HEAT ANTICIPATOR SETTING
The heat anticipator in the room thermostat must be cor-
rectlyadjustedtoobtainthepropernumberofheatingcycles
per hour and to prevent the room temperature from over-
shootingtheroomthermostatsetting.Heatanticipatormust
be set at 0.4 amps.

9
Allductworkexposedtotheoutdoorsmustincludeaweath-
erproof barrier and adequate insulation.
Aduct system should be installedin accordancewith Stan-
dards of the National Board of Fire Underwriters for the
Installationof AirConditioning, WarmAir Heatingand Ven-
tilating Systems. Pamphlets No. 90A and 90B.
The warm air supply duct from the unit through a wall
fabricated of combustible material maybe installed without
clearance.However,minimumclearancesforthe unit must
be observed as shown in Specification Sheet.
The outlet duct should be provided with an access panel.
This access should be large enough to inspect the air
chamber downstream from the heat exchanger for any
smoke or combustion gas leaks. A cover should be tightly
attached to prevent air leaks.
Forhorizontalairflow,ductflangedimensionsontheunitare
shown in Specification Sheet.
For vertical airflow, 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
CAUTION
Topreventpropertydamageduetofireand
loss of equipment efficiency or equipment
damage due to dust and lint build up on
internal parts, never operate unit without
anairfilterinstalledinthereturnairsystem.
Even though a return air filter is not supplied with this unit,
there must be a means of filtering all return air.
RefertoSpecification Sheet providedwithunit for filtersize
information.
If using the Over/Under Transition Kit, the filter(s) may be
located in the return air duct(s) or return air filter grille(s).
Filters installed external to the unit should be sized in
accordance with their manufacturer recommendations. A
throwaway filter must be sizedfor a maximum facevelocity
of 300 feet per minute.
FILTER INSTALLATION
Important:Wheninstallingafilter,theairflowarrowsonthe
filter must point at the indoor blower.
VII. Venting
FLUE HOOD AND AIR INLET HOOD INSTALLATION
Installthefluehoodandairinlethoodpriortooperationofthe
unit. See Figure 8.
To install the flue hood cover:
1. Remove the flue hood and bug screen from inside the
heating compartment.
2. Attach the flue hood and screen with the sheet metal
screw provided.
To install the air inlet hood:
1. Remove hood from the heating compartment.
2. Attach hood by using the supplied sheet metal screws.
Flue Hood
Air Intake Hood
Screen
Figure 8
Air Inlet Hood and Flue Hood
VENTING
NOTE: Venting is self-contained. Do not modify or block.
VIII. Condensate Drain
CONDENSATE DRAIN CONNECTION
This unit has a built in trap - no external trap is required.
Toavoiddoubletrappingandanoverflowingdrainpan,soft
plastic drain lines are not recommended.
IX. Heating Sequence of Operations
NORMAL SEQUENCE OF OPERATION - HEATING
1. Thermostat calls for heat. The combustion blower is
immediatelyenergized.
2. The pressure switch contacts transfer.
3. The ignitor is energized and pilot gas begins to flow.
4. After pilot flame is proven, the main valve is energized
and the pilot will light the main burners.
5. The control checks the signal from the flame sensor.
Gas flow will continue only if a proper signal is present.
As soon as pilot flame is proven, the ignitor is de-
energized.
6. The unit will continue to fire for 30 seconds. The fan
control will then start the main circulating air blower.
7. The unit will deliver heat to the conditioned space until
the thermostat is satisfied.

10
8. The gas valve and combustion blower will be de-
energized when the thermostat opens.
9. There is an adjustable Heat Fan OFF of approximately
60/90/120/150 second delay (factory set at 120). The
control module will de-energize the blower once the
selected time has elapsed. This allows any additional
heat in the heat exchanger to be transferred to the
conditioned space.
X. Cooling Sequence of Operations
NORMAL SEQUENCE OF OPERATIONS - COOLING
1. Thermostat calls for cooling. The compressor and
outdoor fan are energized.
2. Approximately six seconds later, the indoor fan starts.
3.Theunitwilldelivercoolingtotheconditionedspaceuntil
the thermostat is satisfied.
4. The compressor and outdoor fan will be de-energized
when the thermostat opens.
5. The indoor fan continues to run for approximately 30
seconds after the thermostat is satisfied. This allows
additional cooling from the indoor coil to be transferred
to the conditioned space. Then, the indoor fan stops.
Xl. Startup and Adjustment
HEATING STARTUP
GENERAL INFORMATION
Thisunitisequippedwithanelectronicignitiondevicetolight
the pilot which then lights the 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 instruc-
tions.Ifanysparking,odors,orunusualsoundsareencoun-
tered,shutoffelectricalpowerandrecheckforwiringerrors,
or obstructions in or near the blower motors. Duct covers
must be removed before operating unit.
HEAT ANTICIPATOR SETTING
The heat anticipator in the room thermostat must be cor-
rectlyadjustedtoobtainthepropernumberofheatingcycles
per hour and to prevent the room temperature from over-
shootingtheroomthermostatsetting.Heatanticipatormust
be set at 0.4 amps.
ROLL-OUT PROTECTION CONTROL
Iftheflamesfromtheburnersarenotproperlydrawnintothe
heat exchanger, a roll-out protection device will open, cut-
tingpowertothegasvalve.Theroll-outprotectiondeviceis
locatedon theside of burnerbox (Figure9). Thereason for
elevatedtemperatures at the control shouldbe determined
and repaired prior to resetting this manual reset control.
WARNING
Topreventdeath,personalinjuryorproperty
damage due to fire or explosion, before
manually resetting the roll-out protection
device,aqualifiedservicermustinvestigate
thereasonfortheroll-outprotectiondevice
to open.
Burner
Box
Roll-Out
Protector
Figure 9
Rollout Protection
SECONDARY LIMIT CONTROL
A second limit control is placed on the blower scroll. This
controlwillopenduetoelevatedtemperaturecausedbythe
blower failing. The reason for elevated temperatures at the
controlshouldbedeterminedandrepairedpriortoresetting
this manual reset control. The secondary limit control is
locatedonthetopoftheblowerscrollassembly.(Figure10)
Ifthepowertotheunitisinterruptedduringtheheatingcycle,
it may cause the secondary limit to trip. To reset, press the
red button on the limit.
Blower
Compartment
Access Door
Blower
Assembly
Secondary
Limit Control
Reset Button
Condenser Coil
Duct
O
p
enin
g
Figure 10
Secondary Limit Control (Top View)

11
OPERATING INSTRUCTIONS (HEATING)
NOTE: Figure 2 illustrates the proper gas valve mounting
location.
OFF
ON
Figure 11
Honeywell Gas Valve SV9500
(Top View)
IGNITOR
CONTROL
OFF
ON
½PSI IN
Figure 12
Honeywell Gas Valve SV9501
(Top View)
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.Removetheheatexchangerdooronthesideoftheunit
by removing screws.
5. This unit is equipped with an ignition device which
automatically lights the pilot. Do NOT try to light burner
by any other method.
6. Turn the gas control valve knob or switch to the OFF
position. Do not force. (Figures 11 or 12)
7. Wait five minutes to clear out any gas.
8. Smell for gas, including near the ground. This is impor-
tant because some types of gas are heavier than air. If
you have waited five minutes and you do smell gas,
immediatelyfollowtheinstructionsonthePage2ofthis
manual. If having waited for five minutes and no gas
smellisnoted,turnthegascontrolvalveknoborswitch
to the ON position. (Figures 11 or 12)
9.Replacetheheatexchangerdooronthesideoftheunit.
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.
GAS INPUT AND PRESSURES
Gas supply pressure and manifold pressure with the burn-
ers operating must be as specified on the rating plate.
GAS PRESSURE CHECKS
Gasinlet pressuremust be checked and adjusted in accor-
dance 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(Figure 14).
WITH POWER AND GAS ON:
2. Put unit into heating cycle and turn on all other gas
consuming appliances.
Inlet Gas Pressure
Natural Min. 5.0" W.C., Max. 10.0" W.C.
Propane Min. 11.0" W.C., Max. 13.0" W.C.
Figure 13
Inlet Gas Pressure
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.
Figure 14
Measuring Inlet Gas Pressure
Alternate Method
CHECK THE MANIFOLD PRESSURE
A tapped opening is provided in the gas valve to facilitate
measurementofthemanifoldpressure.A“U”Tubemanom-
eterhavingascalerangefrom0to12inchesofwatershould
beusedforthismeasurement.Themanifoldpressuremust
be measured with the burners operating.

12
2.Thetemperaturerisemustbewithintherangespecified
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
operatedatratedinputwiththerecommendedblowerspeed.
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.
CHECKING EXTERNAL STATIC PRESSURE
The total external static pressure must be checked on this
unit to determine if the airflow is proper.
CHANGING BLOWER SPEEDS
WARNING
To avoid death or personal injury due to
electricshock,removeelectricalpowerfrom
theunit beforechanging speedtaps onthe
blower motor.
Refer to the wiring diagram on the unit to verify speed tap
settings.
Blower speeds can be changed on the fan timer board.
Both heat speed and cool speed terminals are supplied on
the board along with two unused motor lead terminals
(Figure 15).
3 DI UNUSED
NEUTRAL
CX
XFMR SECMOTOR
LEADS
12
SS
COOL
HEAT
S
CIR BLOWER
Figure 15
Control Board (Top)
CHECK LIMIT
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.
To adjust the pressure regulator, remove the adjustment
screw or cover on the gas valve. Turn out (counterclock-
wise) to decrease pressure, turn in (clockwise) to increase
pressure.Only smallvariations in gas flow should be made
by means of the pressure regulator adjustment. In no case
should the final manifold pressure vary more than plus or
minus0.3incheswatercolumnfromthespecifiedpressure.
Anymajorchangesinflowshouldbemadebychangingthe
size of the burner orifices. The measured input rate to the
furnace must not exceed the rating specified on the unit
rating plate.
Fornaturalgas,themanifoldpressuremustbebetween3.0
and 3.6 inches water column (3.5 nominal).
For propane gas, the manifold pressure must be between
9.7 and 10.3 inches water column (10.0 nominal).
CHECK THE GAS INPUT (NATURAL GAS ONLY)
NOTE: On outdoor equipment, the gas input will vary with
the temperature of the gas. Rated input will be obtained at
approximately 10° F. With warmer ambient and gas tem-
peratures, the input will decrease. Example: At 70° F the
input will decrease 12%.
To measure the gas input using the gas meter 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
meterforonecompleterevolution.Ifthisisa2cubicfoot
dial,dividethesecondsby2;ifitisa1cubicfootdial,use
thesecondsasis.Thisgivesthesecondspercubicfoot
of gas being delivered to the unit.
3. INPUT=GAS HTG VALUE x 3600 / SEC. PER CUBIC
FOOT
Example:Naturalgaswithaheatingvalueof1000BTUper
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:BTUcontentofthegasshouldbeobtainedfrom
the gas supplier. This measured input must not be
greater than shown on the unit rating plate.
4.Relightallotherappliancesturnedoff in step 1.Besure
all pilot burners are operating.
CHECK MAIN BURNER FLAME
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.
CHECK TEMPERATURE RISE
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
sampletemperaturedirectlyfromtheunitheatexchangers,
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.

13
XII. Maintenance
WARNING
To avoid death or personal injury due to
electrical shock, disconnect electrical
powerbeforeperforminganymaintenance.
Important Note: Touching the ignitor body with bare fin-
gers,roughhandling,orvibrationcouldresultinearlyignitor
failure. Only a qualified servicer should ever handle the
ignitor.
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
blockedby debris,which wouldprevent adequatecombus-
tion air and a properly operating vent system.
REPLACING OR CLEANING FILTER
Areturnairfilterisnotsuppliedwiththisunit;however,there
mustbe ameans of filtering all of the return air. Thefilter(s)
may be located in the return air duct(s), 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
heatingor cooling performance. Filter inspectionshould 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
washedwithwater,thoroughlydriedandsprayedwithafilter
adhesivebeforebeingreinstalled.(Filteradhesivesmaybe
found at many hardware stores.) Permanent filters should
last several years. However, should one become torn or
uncleanable, it should be replaced.
MAINTAINING CABINET FINISH
Use a fine grade automotive wax on the cabinet finish to
maintain the finish’s original high luster. This is especially
important in area’s with high ultraviolet radiation.
CLEAN OUTSIDE COIL (QUALIFIED SERVICER ONLY)
The coil with the outside air flowing over it should be
inspectedannuallyandcleanedasfrequentlyasnecessary
to keep the finned areas free of lint, hair and debris.
CONDENSER, EVAPORATOR, AND INDUCED DRAFT
MOTORS
Bearings on the air circulating blower motor, condenser
motorandthe combustion fanmotorarepermanently lubri-
cated. No additional oiling is required.
FLAME SENSOR (QUALIFIED SERVICER ONLY)
Adropintheflamesensingsignalcanbecausedbyanearly
invisible coating on the flame sensor. This coating, created
by the fuel or combustion air supply, can be removed by
carefullycleaningtheflamesensorwithemeryclothorsteel
wool (Figure 16).
2.CirculatingAirBlowerwillcontinuetorunfor60,90,120
or 150 seconds, depending on the setting.
NOTE:Ifnecessary,adjustfanOFFdelaysettingstoobtain
satisfactory comfort level.
CAUTION
This unit must not be used as a
“construction heater” during the finishing
phasesofconstructiononanewstructure.
This type of use may result in premature
failure of the unit due to extremely low
return air temperatures and exposure to
very dirty atmospheres.
TO TURN OFF UNIT
1. Set the thermostat to lowest setting.
2. Turn off the electrical power supply to the unit.
3.Removetheheatexchangerdooronthesideoftheunit
by removing screws.
4.Turnthegascontrolvalve knob totheOFFposition.Do
not force. See Figures 11 and 12.
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 STARTUP
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
toprotect the compressoragainst abnormaloperatingcon-
ditions.
WARNING
To avoid death or personal injury, always
disconnect electrical power before
inspecting or servicing the unit. All
compressor protection devices reset
automatically,energizingthecontactorand
outdoor fan.
OPERATING INSTRUCTIONS (COOLING)
NOTE: Mechanical cooling cannot be reliably provided at
ambient temperatures below 50° F.
1. Turn on the electrical power supply to the unit.
2.Placetheroomthermostatselector switchintheCOOL
position (or AUTO if available, and if automatic
changeover from cooling to heating is desired).
3. Set the room thermostat to the desired temperature.

14
NOTE:Aftercleaning,themicroampsignalshouldbeinthe
range listed in Specification Sheet.
Burner
Assembly
Pilot
Tube
Flame Sensor
Ignitor
Figure 16
Ignitor and Flame Sensor
FLUE PASSAGES (QUALIFIED SERVICER ONLY)
At the start of each heating season, inspect and, if neces-
sary, clean the unit flue passage.
CLEANING FLUE PASSAGES (QUALIFIED SERVICER
ONLY)
1. Shut off electric power and gas supply to the unit.
2.Removeburnerassemblybydisconnectingthegasline
and removing the manifold brackets from the partition
panel.
3. Remove the flue from the induced draft blower and the
collector box from the partition panel.
4.Theprimaryheatexchangertubescanbecleanedusing
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
ofthe springcable. Slowly rotate the cable with the drill
and insert it into one of the primary heat exchanger
tubes.Whilereversingthedrill,workthecableinandout
several times to obtain sufficient cleaning. Use a large
cable for the large tube, and then repeat the operation
witha small cablefor thesmallertube. Repeatfor each
tube.
5. When all heat exchanger tubes have been cleaned,
replacethepartsinthereverseorderinwhichtheywere
removed.
6. To reduce the chances of repeated fouling of the heat
exchanger, perform the steps listed in “Start-up and
Adjustment”.
MAIN BURNER FLAME (QUALIFIED SERVICER ONLY)
Flames should be stable, soft and blue (dust may cause
orangetipsbutmustnotbeyellow).Theflamesmustextend
directly outward from the burner without curling, floating or
lifting off (Figure 17).
Check the burner flames for:
1. Good adjustment
2. Stable, soft and blue
3. Not curling, floating, or lifting off.
Figure 17
Burner Flame
WARNING
To avoid death or personal injury due to
electricalshock,donotremoveanyinternal
compartment covers or attempt any
adjustment. Contact a qualified servicer at
once if an abnormal flame appearance
should develop.
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
exchangerdoorontheunit,whichisheldbyseveralscrews.
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 OF BURNERS
1. Shut off electric power and gas supply to the unit.
2.Removethescrewsholdingtheburnerretentionbracket
in place.
3. Remove the burners.
4.Useabottlebrushtocleanburnerinsertandinsideofthe
burners.
5. Replace burners and burner retention bracket, inspect
the burner assembly for proper seating of burners in
retention slots.
6. Reconnect electrical power and gas supply.
CAUTION
Labelallwirespriortodisconnectionwhen
servicingcontrols. Wiringerrorscancause
improper and dangerous operation.
CAUTION
Verify proper operation after servicing.
Forfurtherinformationonthe yearly inspection,consultthe
User Manual. It is recommended that a qualified servicer
inspect and service the unit at least once each year.

15
Turntheunitonatthethermostat.Waitafewminutes,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
directlyoutwardfromtheburnerportswithoutcurlingdown-
ward, floating or lifting off the ports.
XIII. Accessories and Functional Parts
SHEET METAL ACCESSORIES
AdditionalAmanaaccessories,asdescribedinTable4,can
be purchased to fit specific application needs. Accessories
can be ordered by the part numbers in the table and each
accessory includes its own separate instructions.
Accessory
Duct Transition Over/Under
Horizontal Duct Covers*
Compressor Sound Blanket
Horizontal Filter Kit
Propane Gas Conversion Kit
High Altitude Kit
* Standard on PGA**C
Table 4
Accessory List
FUNCTIONAL PARTS
Blower Housing Flame Roll-Out Switch
Blower Motor Gas Orifice
Blower Wheel Heat Exchanger
Burner High Limit Switch
Compressor Secondary Limit
Condenser Coil Ignitor/Flame Sensor
Condenser Fan Blade Induced Draft Motor
Condenser Fan Motor Pressure Switch
Contactor Pressure Switch Hose
Evaporator Coil Transformer
Fan Timer Board
Figure 18
Functional Parts List
GENERAL INFORMATION
1.Refer to thedescription inFigure18 whenordering any
ofthelisted functionalparts.Be suretoprovidethe unit
model, manufacturing, and serial numbers with the
order.
2.AlthoughonlyfunctionalpartsareshowninFigure18,all
sheet metal parts, doors, etc. may be ordered by de-
scription.
3. Parts are available from your Amana distributor.