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SPECIFICATIONS (contd.)
SPECIFICATIONS (units equipped with electronically controlled blower motor)
Model No.
GSR21V380
GSR21V580
GSR21V5100
Input Btuh
80,000
80,000
100,000
Output Btuh
71,000
72,000
92,000
*A.F.U.E.
94.5%
94.6%
92.0%
California Seasonal Efficiency
92.5%
92.1%
89.7%
Temperature rise range (
°
F)
40 70
30 60
45 75
High static certified by A.G.A. (in wg.)
.80
.80
.80
Gas Piping Size
Natural
1/2
1/2
1/2
I.P.S. (in.)
•
LPG
1/2
1/2
1/2
Vent/Intake air pipe size connection (in.)
2
2
2
Condensate drain connection (in.) SDR11
1/2
1/2
1/2
Blower wheel nominal diameter x width (in.)
10 x 8
111/2 x 9
111/2 x 9
Blower motor hp
1/2
1
1
Number and size of filters (in.)
(1) 20 x 25 x 1
Tons of cooling that can be added
2 3
31/2 5
31/2 5
Electrical characteristics
120V − 60hertz − 1 phase
12.0 Amps Max
120V − 60hertz − 1 phase − 14.5 Amps Max
•
LPG kit (optional)
**Furnished
LB65810C
Optional Horizontal Support Frame Kit Ship. Weight
LB56495CA (All Models) 18 lbs.
Optional Downflow Additive Base Shipping Weight
LB80639BB (All Models) 6 lbs.
•
LPG kit must be ordered extra for field changeover.
*Annual Fuel Utilization Efficiency based on D.O.E. test procedures and according to F.T.C. labeling regulations.
Isolated combustion system rating for nonweatherized furnaces.
**LPG orifice furnished as standard with unit for field changeover. Convertible gas valve requires simple adjustment without adding any parts. See installation instructions.
BLOWER DATA
(units equipped with conventional multispeed blower motor)
G21Q340, G21Q360 AND G21Q380
BLOWER PERFORMANCE
External Static
Air Volume @ Various Speeds
Pressure
(in. wg)
High
Medium
Low
0
1585
1392
920
.05
1558
1364
917
.10
1533
1354
915
.15
1505
1335
912
.20
1477
1315
905
.25
1447
1294
893
.30
1418
1272
887
.40
1355
1225
858
.50
1282
1164
803
NOTE All cfm data is measured external to unit with the air filter in place.
G21Q580 BLOWER PERFORMANCE
ExternalStatic
Air Volume (cfm) @ Various Speeds
Pressure
(in. wg)
High
MedHigh
Medium
MedLow
Low
0
2460
2350
2155
1900
1695
.05
2430
2310
2130
1875
1675
.10
2395
2275
2100
1855
1655
.15
2355
2240
2065
1825
1625
.20
2315
2205
2035
1800
1600
.25
2275
2175
1995
1780
1570
.30
2235
2130
1960
1740
1540
.40
2155
2055
1880
1675
1480
.50
2070
1970
1790
1605
1410
.60
1980
1890
1710
1540
1345
NOTE All cfm data is measured external to unit with the air filter in place.