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RT6621023r3

November 2013

This manual is to be used by qualified, professionally trained HVAC technicians only.
Goodman does not assume any responsibility for property damage or personal injury due
to improper service procedures or services performed by an unqualified person.

 is a registered trademark of Maytag Corporation or its related companies

and is used under license to Goodman Company, L.P., Houston, TX.  All rights reserved.

Copyright ©2011,  2013 Goodman Company, L.P.

Refer to Service Manual RS6612007 for troubleshooting information.

All safety information must be followed as provided in the Service Manual.

Refer to the appropriate Parts Catalog for part number information.

Model numbers listed on page 3.

AMH8 33-3/8" 80% Gas Furnace

80% AFUE, Twin Comfort

,

Multi-Speed, Upflow/Horizontal

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Summary of Contents for AMH8 33-3/8"

Page 1: ...ted companies and is used under license to Goodman Company L P Houston TX All rights reserved Copyright 2011 2013 Goodman Company L P Refer to Service Manual RS6612007 for troubleshooting information All safety information must be followed as provided in the Service Manual Refer to the appropriate Parts Catalog for part number information Model numbers listed on page 3 AMH8 33 3 8 80 Gas Furnace 8...

Page 2: ...l injury or death Goodman will not be responsible for any injury or property damage arising from improper service or service procedures If you install or perform service on this unit you assume responsibility for any personal injury or property damage which may result Many jurisdictions require a license to install or service heating and air conditioning equipment WARNING WARNING WARNING WARNING A...

Page 3: ...o the imposition of substantial fines These regulations may vary by jurisdiction Should questions arise contact your local EPA office WARNING WARNING Do not connect or use any device thatisnotdesigncertifiedbyGood man for use with this unit Serious property damage personal injury reduced unit perfor mance and or hazardous conditions may result from the use of such non approved devices WARNING WARN...

Page 4: ...t in place Keep the blower access door in place except for inspection and maintenance This furnace is also equipped with a self diagnosing elec tronic control module In the event a furnace component is not operating properly the control module LED will flash on and off in a factory programmed sequence depending on the problem encountered This light can be viewed through the observation window in t...

Page 5: ...ped requires no change to run between 0 4500 feet Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure below 4500 feet This can cause poor combustion and equipment failure High altitude installations above 4500 feet may require both a pressure switch and an orifice change These changes are necessary to compensate for the natural reduction in the densi...

Page 6: ...tegrated Control Module 14 Blower Door Interlock Swtich 15 Circulator Blower 16 Gas Line Entrance Alternate Note Primary Limit Not Shown 躀 Pressure Switch Tubular Heat Exchanger Flue Pipe Connection Gas Line Entrance Alternate Induced Draft Blower Gas Line Entrance Gas Valve Rollout Limit Junction Box Wiring Harness Grommet Gas Manifold Inshot Burner Blower Door Interlock Switch Integrated Control...

Page 7: ...et High Voltage Inlet Low Voltage Alt Gas Inlet Alt High Voltage Alt LowVoltage MODELS A B AMH80403A AMH80603A 14 12 1 2 AMH80604B AMH80803B AMH80804B 17 1 2 16 AMH80805C AMH81005C 21 19 1 2 AMH81205D 24 1 2 23 All dimensions are in inches ...

Page 8: ... AMH81205D A 0 80 0130F00042 PRESSURE SWITCH TRIP POINTS AND USAGE CHART Part Number 0130F00035 20162906 20162903 0130F00036 Open Setting F 220 170 160 180 AMH80403A A 1 AMH80603A A 1 AMH80604B A 1 AMH80803B A 1 AMH80804B A 1 AMH80805C A 1 AMH81005C A 1 AMH81205D A 1 PRIMARY LIMIT Part Number 10123529 Open Setting F 300 AMH80403A 2 AMH80603A 2 AMH80604B 2 AMH80803B 2 AMH80804B 2 AMH80805C 2 AMH810...

Page 9: ...ting F 150 160 210 AMH80403A B 1 AMH80603A B 1 AMH80604B B 1 AMH80803B B 1 AMH80804B B 1 AMH80805C B 1 AMH81005C B 1 AMH81205D B 1 PRIMARY LIMIT Part Number 10123529 Open Setting F 300 AMH80403A 2 AMH80603A 2 AMH80604B 2 AMH80803B 2 AMH80804B 2 AMH80805C 2 AMH81005C 2 AMH81205D 2 ROLLOUT LIMIT SWITCHES Part Number 0130F00038 Open Setting F 120 AMH80403A 1 AMH80603A 1 AMH80604B 1 AMH80803B 1 AMH808...

Page 10: ...racket for use with one size smaller furnace All proper coil combinations are subject to being ARI rated with a matched outdoor unit Coil Matches Amana brand units using R22 and R 410A C A P F 1824 A 6 A PRODUCT TYPE C Indoor Coil CABINET FINISH U Unpainted P Painted N Unpainted Case EXPANSION DEVICE F Flowrater NOMINAL CAPACITY RANGE 13 SEER 1824 1 1 2 to 2 Tons 3030 2 1 2 Tons 3636 3 Tons 3642 3...

Page 11: ...y Refer to Minimum Filter Area tables to determine filter area requirement NOTE Filters can also be installed elsewhere in the duct system such as a central return Upflow Filters Cabinet Width in Nominal Filter Size in Approx Flow Area in 2 Cabinet Width in Nominal Filter Size in Approx Flow Area in 2 All 16 x 25 x 1 400 14 12 x 25 x 1 300 17 1 2 14 x 25 x 1 350 21 16 x 25 x 1 400 24 1 2 20 x 25 x...

Page 12: ...he dipswitches on the ignition control as follows Note This furnace is designed to be used with a single stage thermostat Modified Two Stage Fixed 5 Min Low Stage Auto Time 1 12 Min Low Stage Single Stage Factory Setting T Stat Satisfied T Stat Satisfied Gas Valve Switch to 2nd Stage Gas Valve Switch to 2nd Stage Blower Switch to Hi Heat Operation Blower Switch to Hi Heat Operation Low Heat Blower...

Page 13: ...000 115 000 140 000 Output Natural Gas BTUH 1 36 000 56 000 56 000 72 000 72 000 72 000 92 000 112 000 Output LP BTUH 32 000 48 000 48 000 64 000 64 000 64 000 80 000 96 000 A F U E 80 0 80 0 80 0 80 0 80 0 80 0 80 0 80 0 Rated External Static w c 0 20 0 50 0 20 0 50 0 20 0 50 0 20 0 50 0 20 0 50 0 20 0 50 0 20 0 50 0 20 0 50 Temperature Rise F 25 55 25 55 20 50 35 65 35 65 35 65 35 65 40 70 Press...

Page 14: ... 000 Output LP BTUH 32 000 48 000 48 000 64 000 64 000 64 000 80 000 96 000 A F U E 80 0 80 0 80 0 80 0 80 0 80 0 80 0 80 0 Rated External Static w c 0 20 0 50 0 20 0 50 0 20 0 50 0 20 0 50 0 20 0 50 0 20 0 50 0 20 0 50 0 20 0 50 Temperature Rise F 25 55 20 50 20 50 35 65 35 65 35 65 35 65 40 70 Pressure Switch Trip Point w c 0 80 0 80 0 90 0 80 0 80 0 80 0 80 0 80 Blower Wheel D x W 10x6 10x6 10x...

Page 15: ...818 792 728 LOW 1 5 758 741 741 733 699 677 649 626 HIGH 4 0 2134 2100 25 2042 25 1975 26 1883 28 1786 1700 1601 MH80604B A MED 3 5 1668 31 1663 31 1656 31 1645 32 1616 32 1549 1492 1391 MED LO 3 0 1419 37 1426 36 1426 36 1432 36 1419 37 1378 1328 1261 LOW 2 5 1134 46 1145 45 1166 44 1171 44 1160 45 1144 1111 1071 HIGH 3 0 1607 41 1572 42 1547 43 1498 45 1448 46 1390 1302 1222 MH80803B A MED 2 5 1...

Page 16: ...28 LOW 1 5 758 741 741 733 699 677 649 626 HIGH 4 0 2134 21 2100 21 2042 22 1975 23 1883 24 1786 1700 1601 MH80604B B MED 3 5 1668 27 1663 27 1656 27 1645 27 1616 28 1549 1492 1391 MED LO 3 0 1419 31 1426 31 1426 31 1432 31 1419 31 1378 1328 1261 LOW 2 5 1134 39 1145 39 1166 38 1171 38 1160 38 1144 1111 1071 HIGH 3 0 1607 37 1572 38 1547 39 1498 40 1448 41 1390 1302 1222 MH80803B B MED 2 5 1159 51...

Page 17: ...10 120 100 130 140 150 100 90 80 70 60 50 40 30 20 10 OUTPUT BTU HR x 1000 BTU OUTPUT vs TEMPERATURE RISE CHART TEMPERATURE RISE 600 CFM 700 900 1000 1100 1200 1400 1600 1800 2000 2200 2400 CFM FORMULAS BTU OUTPUT CFM x 1 08 x RISE RISE BTU OUTPUT 1 08 CFM 800 ...

Page 18: ...OSTATAT0 7AMPS BLOWER PRIMARYLIMIT WH GR BK IGNITER SURFACE HOT PU RD 15PINPLUG C NO SWITCH PRESSURE BR SENSOR FLAME BK WH ROLLOUTLIMITS RAPIDFLASHES REVERSED115VACPOLARITY VERIFYGND SYSTEMLOCKOUT RETRIES RECYCLESEXCEEDED 7FLASHES LOWFLAMESIGNAL 5FLASHES FLAMESENSEWITHOUTGASVALVE 4FLASHES OPENHIGHLIMIT 3FLASHES PRESSURESWITCHSTUCKOPEN 2FLASHES PRESSURESWITCHSTUCKCLOSED STEADYON NORMALOPERATION OFF...

Page 19: ...RK CIR NEU K5 GAS VALVE HIGH LIMIT AUX LIMIT PRESSURE SWITCH FLAME SENSOR PROBE IGNITOR FP IGN GND MV MLV PS HLO HLI CIRCULATOR BLOWER XFMR HOT XFMR NEU 24 VAC TH RO1 RO2 R TR C Y G W COMPRESSOR CONTACTOR COIL THERMOSTAT R Y G W INDUCER IND ELECTRONIC AIR CLEANER EAC EAC NEU K6 ROLLOUT SWITCH K1 FACTORY JUMPER FACTORY JUMPER PSO K2 K3 K3 LO HEAT COM PM HI 2 STAGE K7 This schematic is for reference...

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