FURNACE SPECIFICATIONS
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.
16
GCVC9
MODEL
GCVC90704CX*
GCVC90905DX*
GCVC91155DX*
Btuh Input (US) High Fire
69,000
92,000
115,000
Output (US) High Fire
65,300
86,500
109,000
Btuh Input (US) Low Fire
48,000
64,000
80,000
Output (US) Low Fire
45,000
60,100
77,400
A.F.U.E.
93.0%
92.0%
93%
Rated External Static (" w.c.)
.10 - .50
.10 - .50
.10 - .50
Temperature Rise (°F)
30 - 60
30 - 60
40 - 70
High Stage Pressure Switch Trip Point (" w.c.)
-0.55
-0.55
-0.55
Low Stage Pressure Switch Trip Point (" w.c.)
-0.20
-0.20
-0.20
Front Cover Pressure Switch Trip Point (" w.c)
-0.37
-0.37
-0.37
Blower W heel (D" x W ")
10 x 10
11 x 10
11 x 10
Blower Horsepower
3/4
1
1
Blower Speeds
Max CFM @ 0.5 E.S.P.
Power Supply
115-60-1
115-60-1
115-60-1
Minimum Circuit Ampacity (MCA)
14.1
17.9
17.9
Maximum Overcurrent Device
15
20
20
Transformer (VA)
40
40
40
Heat Anticipator (Amps)
0.7
0.7
0.7
Primary Limit Setting (°F)
160
170
145
Auxiliary Limit Setting (°F)
220
180
180
Rollout Limit Setting (°F)
220
210
210
Fan Delay On Heating
30 secs.
30 secs.
30 secs.
Off Heating *
150 secs.
150 secs.
150 secs.
Fan Delay On Cooling
5 secs.
5 secs.
5 secs.
Off Cooling
45 secs.
45 secs.
45 secs.
Fan Delay On - Fan Only
5 secs.
5 secs.
5 secs.
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.)
1.9 / 6.0
1.9 / 6.0
1.9 / 6.0
Orifice Size (Natural/Propane)
#43 / #55
#43 / #55
#43 / #55
Number of Burners
3
4
5
Vent Connector Diameter (inches)
2
2
3
Combustion Air Connector Diameter (inches)
2
2
2
Shipping W eight (lbs.)
157
172
175
Refer to airflow charts in this manual.
* Off Heating - This fan delay tim ing is adjus table (90, 120, 150 or 180 s econds ), 150 s econds as s hipped.
