Amana PGC(24-60)B - Manuals

Page 2 - I. Unit Specifications; Table 1A

2 I. Unit Specifications MODEL PGC24B0452A PGC24B0702A PGC30B0702A PGC36B0702A PGC36B0902A Cooling Capacity Btuh 24,000 24,000 30,000 36,000 36,000 SEER 12.50 12.50 12.30 12.00 12.00 Heating Input Btuh 45,000 70,000 70,000 70,000 90,000 Output Btuh 35,000 55,000 55,000 55,000 70,000 AFUE 80.9 80.1 8...

Page 6 - II. Safety Information; Important; Extinguish any open flame.; CAUTION

6 II. Safety Information Important To The InstallerBefore installing this unit please read this manual to fa-miliarize yourself with the specific items which must beadhered to such as maximum external static pressureto unit, air temperature rise, minimum or maximum CFMand motor speed connections. Af...

Page 7 - Locating The Unit; Ground Level Installations Only:; The feet on the unit may not be removed.; Rooftop Installations Only:; • To avoid possible property damage or personal in-; III. General Information; WARNING

7 Locating The Unit WARNING To avoid possible equipment damage,fire, personal injury, or death, the follow-ing points must be observed when install-ing the unit. All Installations: • For proper flame pattern within the heat exchangerand proper condensate drainage, the unit must bemounted level. • Th...

Page 9 - IV. Rigging and Handling; Figure 2

9 Transportation DamageAll units are securely packed in shipping cartons ap-proved by the International Safe Transit Association. Thecarton should be checked upon arrival for external dam-age. If damage is found, a request for inspection by car-rier agent should be made in writing immediately. The u...

Page 10 - INLET GAS PRESSURE; Natural; Table 3; Connecting The Gas Piping - Natural Gas; Table 4; Use black iron or steel pipe and fittings for the build-

10 V. Gas Piping IMPORTANT NOTE: This furnace is factory set to oper-ate on natural gas at the altitudes shown on the ratingplate. If operation at higher altitudes and/or propane gasoperation is required, obtain and install the proper con-version kit(s) before operating this furnace. Failure todo so...

Page 11 - Checking The Gas Piping; Tanks And Piping for Propane Gas Units

11 Figure 3 Proper Piping Practice Checking The Gas Piping CAUTION To avoid the possibility of personal in-jury, property damage or fire, the follow-ing instructions must be performed re-garding gas connections and pressuretesting: • This unit and its gas connections must be leak tested before placi...

Page 12 - Vl. Electrical Wiring

12 Special pipe dope must be used when assembling pip-ing for this gas as it will quickly dissolve white lead ormost standard commercial compounds. Shellac basecompounds resistant to the actions of liquefied petro-leum gases such as Gasolac, Static, Clyde or JohnCrane are satisfactory. Please refer ...

Page 13 - Vll. Circulating Air and Filters; Figure 7; Ductwork; Figure 6

13 CAUTION To prevent improper and dangerous op-eration due to wiring errors, label all wiresprior to disconnection when servicingcontrols. Verify proper operation afterservicing. Vll. Circulating Air and Filters Airflow ConversionUnits can easily be converted from horizontal to verticalairflow deli...

Page 14 - Typical Wiring

14 Figure 8 Typical Electrical Wiring Typical Wiring (Ground Level) Disconnect Switch High Voltage Source High Voltage Entrance Low Voltage Entrance Typical Wiring (Rooftop) Disconnect Switch High Voltage Source High Voltage Entrance Low Voltage Entrance Junction Box Rooftop Curb

Page 15 - Filters; Model; Figure 9

15 Duct systems and register sizes must be properly de-signed for the C.F.M. and external static pressure ratingof the unit. Ductwork should be designed in accordancewith the recommended methods of Air Conditioning Con-tractors of America Manual D (Residential) or Manual Q(Commercial). All ductwork ...

Page 16 - Air Inlet Hood and Flue Hood; Replacing a Indoor Furnace; Typical Condensate Drain

16 VIII. Flue Vent Flue Hood And Air Inlet Hood InstallationThe flue hood and air inlet hood are packaged in a boxwhich is located inside the return air compartment. Theymust be installed prior to operation of the unit. See Fig-ure 10. To install the flue hood cover: 1. Remove the flue hood from ins...

Page 17 - PGC Timing Chart for Normal Cooling Operation; PGB Timing Chart for Normal Cooling Operation

17 Air Circulation Blower Gas Valve Ignitor Pressure Switch(N.O. Contacts) Combustion Blower Thermostat ON OFF ON OFF ON OFF ON OFF OPEN CLOSED CLOSED OPEN Seconds 0 34 38 110 0 90 T h er m o sta t O N Ga s Va lv e Op e n s Ig n it o r O F F Air Bl o w e r O N T h er m o sta t O F F C o m b us ti on...

Page 18 - Heating Startup

18 X. Heating Sequence of OperationsPGB & PGC) Normal Sequence of Operation - HeatingSee Figure 12 1. Thermostat calls for heat. The combustion blower is immediately energized. 2. The pressure switch contacts transfer. 3. The ignitor is energized and allowed to preheat for 38 seconds. 4. The gas...

Page 19 - Rollout Protection; Position of Limit Control; Gas Valve

19 WARNING To avoid the risk of fire or explosion, aqualified servicer must investigate theproblem which caused the roll-out pro-tection device to open before manuallyresetting the device. Flam e R oll-O ut P ro tec to r (M an ua l R e s et) Figure 14 Rollout Protection (Shown Without Heat Shield) S...

Page 20 - Measuring Inlet Gas Pressure

20 Gas Input And PressuresGas supply pressure and manifold pressure with theburners operating must be as specified on the ratingplate. Checking Gas PressureGas inlet pressure should be checked and adjusted inaccordance to the type of fuel being consumed. With Power And Gas Off: 1. Connect a water ma...

Page 21 - Check Limit And Fan Control; a. After several minutes the main burners must go

21 With a properly designed system, the proper amount oftemperature rise will normally be obtained when the unitis operated at rated input with the recommended blowerspeed. If the correct amount of temperature rise is not obtained,it may be necessary to change the blower speed. Ahigher blower speed ...

Page 22 - Fan and Limit Control; To Turn Off Unit; Short Cycle Protector Location

22 Figure 18 Fan and Limit Control CAUTION This unit should not be used as a “con-struction heater” during the finishingphases of construction on a new struc-ture. This type of use may result in pre-mature failure of the unit due to extremelylow return air temperatures and exposureto very dirty atmo...

Page 23 - Turn on the electrical power supply to the unit.; High Pressure Protection Devices

23 Important Note: Never close the compressor suctionline to test its pumping efficiency. This will seriously dam-age the compressor and void its warranty. • The compressor may run backwards (noisy opera-tion) for 1 or 2 seconds at shutdown. This does notharm the compressor. • These scroll compresso...

Page 24 - Blower Motor and Housing

24 When installing a new filter or reinstalling an old one,always make certain the air flow arrows on the filter pointin the proper direction. If using the unit filter rack, theairflow arrows must point toward the indoor blower. To inspect the filter in the filter rack, proceed as follows: 1. Discon...

Page 25 - Cleaning Flue Passages (Qualified Servicer Only)

25 Flame Sensor (Qualified Servicer Only)Under some conditions, the fuel or combustion air sup-ply can create a nearly invisible coating on the flamesensor. This coating acts as an insulator causing a dropin the flame sensing signal. If this occurs, a qualifiedservicer should carefully clean the fla...

Page 26 - Burners; Transition Kit; Parts are available from your Amana distributor.

26 Burners WARNING To avoid personal injury or death dueto electrical shock, do not remove anyinternal compartment covers or attemptany adjustment. Contact a qualified ser-vicer at once if an abnormal flame ap-pearance should develop. At least once a year, prior to or during the heating sea-son, mak...

Page 27 - XV. Typical Cooling Performance Data; Table 8A

27 XV. Typical Cooling Performance Data Outdoor Indoor PGC24 PGC30 PGC36 Air Te m p. at Air Te m p. Indoor Air Te m p. Pr e s s ur e @ Unit Gauge Fittings Am ps Indoor Air Te m p. Pr e s s ur e @ Unit Gauge Fittings Am ps Indoor Air Te m p. Pr e s s ur e @ Unit Gauge Fittings Am ps Conde ns e r Inle...

Page 28 - Table 8B

28 Outdoor Indoor PGC42 PGC48 PGC60 and PGB58 Air Temp. at Air Temp. Indoor Air Temp. Pressure @ Unit Gauge Fittings Amps Indoor Air Temp. Pressure @ Unit Gauge Fittings Amps Indoor Air Temp. Pressure @ Unit Gauge Fittings Amps Condenser Inlet (Dry Bulb) at Evap. Inlet (Wet Bulb) Difference Between ...