FURNACE SPECIFICATIONS
11
(1)
Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps.
(2)
Maximum Overcurrent Protection Device: May use Time Delay Fuse or HACR type Circuit Breaker of the same size as noted.
NOTES:
1. These furnaces are manufactured for natural gas operation. Optional kits are available for conversion to propane operation.
2. 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.
3. 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.
4. Wire size should be determined in accordance with National Electrical Codes. Extensive wire runs will require larger wire sizes.
MODEL AMV80704BX** AMV80905CX** AMV81155CX**
Btuh Input (US) High Fire (Natural Gas) 70,000 90,000 115,000
Output (US) High Fire (Natural Gas), BTUH 57,000 74,000 93,000
Output (US) High Fire (LP), BTUH 49,000 64,000 82,000
Btuh Input (US) Low Fire (Natural Gas) 52,500 67,500 86,000
Output (US) Low Fire (Natural Gas), BTUH 42,000 54,000 69,000
Output (US) Low Fire (LP), BTUH 42,000 54,000 69,000
A.F.U.E. 80% 80% 80%
Rated External Static (" w.c.) .20 - .50 .20 - .50 .20 - .50
Temperature Rise (°F) 20 - 50 25 - 55 25 - 55
High Stage Pressure Switch Trip Point (" w.c.) -0.45 -0.60 -0.55
Low Stage Pressure Switch Trip Point (" w.c.) -0.30 -0.30 -0.30
Blower Wheel (D" x W") 10 x 8 10 x 10 10 x 10
Blower Horsepower 3/4 3/4 3/4
Blower Speeds
Max CFM @ 0.5 E.S.P.
Power Supply 115 VAC / 60 HZ / 1 PH 115 VAC / 60 HZ / 1 PH 115 VAC / 60 HZ / 1 PH
Minimum Circuit Ampacity (MCA)
(1)
11.7 11.7 11.7
Maximum Overcurrent Device (AMPS)
(2)
15 15 15
Transformer (VA) 40 40 40
Primary Limit Setting (°F) 150 150 130
Auxiliary Limit Setting (°F) 150 150 150
Rollout Limit Setting (°F) 300 300 300
Gas Supply Pressure (Natural/Propane) (" w.c.) 7 / 11 7 / 11 7 / 11
Manifold Pressure (Natural/Propane) High Stage (" w.c.) 3.5 / 10 3.5 / 10 3.5 / 10
Manifold Pressure (Natural/Propane) Low Stage ("w.c.) 1.6 / 6.3 1.6 / 6.3 1.6 / 6.3
Orifice Size (Natural/Propane) 43 / 55 43 / 55 43 / 55
Number of Burners 3 4 5
Vent Connector Diameter (inches)
(4)
444
Shipping Weight (lbs.) 152 178 194
VARIABLE
Refer to airflow charts on page 12-14.
(62 pages)
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