Amana AMH* service manual Furnace Specifications

FURNACE SPECIFICATIONS

MODEL	AMH80453AX**	AMH80703AX**	AMH80704BX**	AMH80903BX**	AMH80904BX**	AMH80905CX**	AMH81155CX**	AMH81405DX**
Input, Natural Gas (BTUH)	45,000	70,000	70,000	90,000	90,000	90,000	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
Pressure Switch Trip Point (" w.c.)	-0.70	-0.70	-0.75	-0.75	-0.75	-0.75	-0.90	-0.80
Blower Wheel (D" x W")	10x6	10x6	10x8	10x8	10x8	10x10	10x10	11x10
Blower Horsepower	1/3	1/3	1/2	1/3	1/2	1/2	1/2	3/4
Blower Speeds	4	4	4	4	4	4	4	4
Max CFM @ 0.5 E.S.P.	1280	1100	1610	1439	1738	1854	1902	2084
Power Supply (Volts/Hz/Ph)	115/60/1	115/60/1	115/60/1	115/60/1	115/60/1	115/60/1	115/60/1	115/60/1
Minimum Circuit Ampacity (MCA) 2	8.1	8.1	12.5	8.1	12.5	12.5	12.5	14.7
Maximum Overcurrent Device 3	15	15	15	15	15	15	15	15
Transformer (VA)	40	40	40	40	40	40	40	40
Primary Limit Setting (°F)	220	170	170	170	160	180	180	160
Auxiliary Limit Setting (°F)	120	120	120	120	120	120	120	120
Rollout Limit Setting (°F)	300	300	300	300	300	300	300	300
Fan Delay On Heating	30	30	30	30	30	30	30	30
Off Heating *	150	150	150	150	150	150	150	150
Fan Delay On Cooling	5	5	5	5	5	5	5	5
Off Cooling	45	45	45	45	45	45	45	45
Fan Delay On - Fan Only	0	0	0	0	0	0	0	0
Gas Supply Pressure	7 / 11	7 / 11	7 / 11	7 / 11	7 / 11	7 / 11	7 / 11	7 / 11
(Natural/Propane) (" w.c.)
Manifold Pressure	3.5 / 10	3.5 / 10	3.5 / 10	3.5 / 10	3.5 / 10	3.5 / 10	3.5 / 10	3.5 / 10
(Natural/Propane) (" w.c.)
Orifice Size (Natural/Propane)	43 / 55	43 / 55	43 / 55	43 / 55	43 / 55	43 / 55	43 / 55	43 / 55
Number of Burners	2	3	3	4	4	4	5	6
Vent Connector Diameter (inches)	4	4	4	4	4	4	4	4
Shipping Weight (lbs.)	115	125	136	146	146	154	154	153

*Off Heating - This fan delay timing is adjustable (90, 120, 150 or 180 seconds). 150 seconds as shipped.

1.These furnaces are manufactured for natural gas operation. Optional kits are available for conversion to propane operation.

2.Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps. Wire sizes should be determined in accordance with National Electrical Codes.Extensive wire runs will require larger wire sizes.

3Maximum Overcurrent protections Device refers to maximum recommended fuse or circult breaker size. May use time delay fuses or HACR- type circuit breakers of the same sizes as noted.

NOTES:

1.For elevations above 2000 feet the rating should be reduced by 4% for each 1000 feet above sea level. The furnace must not be derated, orifice changes should only be made if necessary for altitude.

2.The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufacturers method or in accordance with the "A.S.H.R.A.E. GUIDE" or "MANUAL J-LOAD CALCULATIONS" published by the AIR CONDITIONING CONTRACTORS OF AMERICA. The total heat loss calculated should be equal to or less than the heating capacity. Output based on D.O.E. test procedures, steady state efficiency times output.

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