FURNACE SPECIFICATIONS
9 Rev. 1
1. These furnaces are manufactured for natural gas operation. Optional kits are available for conversion to propane opera-
tion.
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 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. Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps.
MODEL
GUID070DA40 GUID070DX40
Btuh Input (US)
69,000 69,000
Output (US)
55,200 55,200
A.F.U.E.
80% 80%
Rated External Static (" w.c.)
.12 - .50 .12 - .50
Temperature Rise (°F)
35 - 65 35 - 65
Pressure Switch Trip Point (" w.c.)
-0.55 -0.55
Blower Wheel (D" x W")
10 x 8 10 x 8
Blower Horsepower
1/2 1/2
Blower Speeds
44
Max CFM @ 0.5 E.S.P.
1529 1529
Power Supply
115-60-1 115-60-1
Minimum Circuit Ampacity (MCA)
9.9 9.9
Maximum Overcurrent Device
15 15
Transformer (VA)
40 40
Heat Anticipator
0.7 0.7
Primary Limit Setting (°F)
215 215
Auxiliary Limit Setting (°F)
160 160
Rollout Limit Setting (°F)
250 250
Fan Delay On
30 secs. 30 secs.
Off Heating *
90 secs. 90 secs.
Off Cooling
45 secs. 45 secs.
Gas Supply Pressure (Natural/Propane) (" w.c.)
7 / 11 7 / 11
Manifold Pressure (Natural/Propane) (" w.c.)
3.5 / 10 3.5 / 10
Orifice Size (Natural/Propane)
#43 / #55 #43 / #55
Number of Burners
33
Vent Connector Diameter (inches)
44
Shipping Weight (lbs.)
152 152
* Off Heating - This fan delay timing is adjustable (60, 90, 120 or 180 seconds), 90 seconds as shipped.
** Note: The two models above use 10x8 blower assembly instead of 10x6 to achieve a full 4 tons of airflow.
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