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FURNACE SPECIFICATIONS
13
1. These furnaces are manufactured for natural gas operation. Optional Kits are available for conversion to propane gas operation.
2. For elevations above 2000 ft. the rating should be reduced by 4% for each 1000 ft. above sea level. The furnace must not be
derated, orifice changes should only be made if necessary for altitude.
3. The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufactures method 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.
4. Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps.
MODEL
AMV90453BX* AMV90704CX* AMV90905DX* AMV91155DX*
Btuh Input (US) High Fire 46,000 69,000 92,000 115,000
Output (US) High Fire 44,300 66,900 88,800 111,100
Btuh Input (US) Low Fire 32,000 48,000 64,000 80,000
Output (US) Low Fire 30,800 46,400 61,700 77,400
A.F.U.E. 96% 95.5% 95.7% 95.8%
Rated External Static (" w.c.) .10 - .50 .10 - .50 .10 - .50 .10 - .50
Temperature Rise (°F) 30 - 60 30 - 60 30 - 60 35 - 65
High Stage Pressure Switch Trip Point (" w.c.) -0.75 -0.75 -1.10 -1.10
Low Stage Pressure Switch Trip Point (" w.c.) -0.30 -0.30 -0.50 -0.50
Front Cover Pressure Switch Trip Point (" w.c) -0.10 -0.10 -0.10 -0.10
Blower Wheel (D" x W") 10 x 7 10 x 10 11 x 10 11 x 10
Blower Horsepower 1/2 3/4 1 1
Blower Speeds
Max CFM @ 0.5 E.S.P.
Power Supply 115-60-1 115-60-1 115-60-1 115-60-1
Minimum Circuit Ampacity (MCA) 10.4 12.8 14.6 14.6
Maximum Overcurrent Device 15 15 15 15
Transformer (VA) 40 40 40 40
Heat Anticipator (Amps) 0.7 0.7 0.7 0.7
Primary Limit Setting (°F) 145 155 145 150
Auxiliary Limit Setting (°F) 150 190 180 200
Rollout Limit Setting (°F) 170 200 190 200
Fan Delay On Heating 30 secs. 30 secs. 30 secs. 30 secs.
Off Heating * 150 secs. 150 secs. 150 secs. 150 secs.
Fan Delay On Cooling 5 secs. 5 secs. 5 secs. 5 secs.
Off Cooling 45 secs. 45 secs. 45 secs. 45 secs.
Fan Delay On - Fan Only 5 secs. 5 secs. 5 secs. 5 secs.
Gas Supply Pressure (Natural/Propane) (" w.c.) 7 / 11 7 / 11 7 / 11 7 / 11
Manifold Pressure (Natural/Propane) High Stage (" w.c.) 3.5 / 10 3.5 / 10 3.5 /10 3.5 /10
Manifold Pressure (Natural/Propane) Low Stage ("w.c.) 1.9 / 6.0 1.9 / 6.0 1.9 / 6.0 1.9 / 6.0
Orifice Size (Natural/Propane) #43 / #55 #43 / #55 #43 / #55 #43 / #55
Number of Burners 2345
Vent Connector Diameter (inches) 2233
Combustion Air Connector Diameter (inches) 2233
Shipping Weight (lbs.) 133 157 172 184
Refer to airflow charts on pages 15-19.
* Off Heating - This fan delay timing is adjustable (90, 120, 150 or 180 seconds), 150 seconds as shipped.
AMV9