A.O. Smith GW/GWO-1000 User Manual
Page 2
A 012.16
ALTERNATE EXHAUST
AIR INLET
G
ELECTRICAL
CONNECTIONS
OUTLET/ECO
F
31 3/4"
FLOW
SWITCH
A
C
17"
D
TOP VIEW
INLET
TEMP.
E
GAS INLET
5 7/16"
CONTROL BOX CONTAINING
CCB AND ICB BOARDS
PRESSURE RELIEF VALVE
B
14 1/2"
HOT WATER SUPPLY BOILER RECOVERY CAPACITIES
Temperature Rise -Degrees F. Gallons Per Hour
Input Rating BTU/Hr.
Natural &
Model
Propane (LP) Gas
40
50
60
70
60
90
100
110
120
130
GW-1000
990,000
GPH
2520
2016
1680
1440
1260
1120
1008
918
840
775
GW-1300
1,300,000
GPH
3309
2847
2208
1891
1655
1471
1324
1203
1103
1018
GW-1500
1,500,000
GPH
3818
3055
2545
2182
1909
1697
1527
1388
1273
1175
GW-1850
1,850,000
GPH
4709
3767
3139
2691
2355
2093
1884
1712
1570
1449
GW-2100
2,100,000
GPH
5345
4276
3564
3055
2673
2376
2138
1944
1782
1645
GW-2500
2,490,000
GPH
6338
5071
4225
3622
3169
2817
2535
2305
2113
1950
Genesis BTU Input/Output And Flow Rates
BTU Input/Output
Boiler Rate of Flow and Pressure Drop
Input Rating BTU/Hr. Output Rating BTU/Hr. 20 Deg. F Rise 30 Deg. F Rise 40 Deg. F Rise
Maximum Flow Rate Minimum Flow Rate
Natural &
Natural &
PD-Ft.
PD-Ft.
PD-Ft.
PD-Ft.
Deg.F
PD-Ft. Deg.F
Model
Propane (LP) Gas
Propane (LP) Gas
GPM
Head
GPM
Head
GPM
Head
GPM Head
Rise
GPM Head
Rise
GW-1000
990,000
831,600
83
5.1
55
2.7
42
1.5
154
12.2
11
42
1.5
40
GW-1300
1,300,000
1,092,000
109
72
73
4.2
55
3.2
154
14.5
14
55
3.2
40
GW-1500
1,500,000
1,260,000
126
10.1
84
8.3
83
4.3
154
16.3
17
64
4.3
40
GW-1850
1,650,000
1,554,000
154
19
104
10.1
78
6.4
154
16.5
20
78
6.4
40
GW-2100
2,100,000
1,764,000
N/A
N/A
116
14.5
68
8.3
154
21.3
23
89
8.3
40
GW-2500
2,490,000
2,091,600
N/A
N/A
139
16.5
105
11.6
154
23.2
26
106
11.6
40
Note: Flow rates and pressure drops shown above are through the boiler only and include no field piping. The field piping must also be
considered when sizing system pumps.
Note: The standard factory supplied internal rear header mounted pump is sized for the boiler and up to additional 50 equivalent feet
of field piping.
All Dimensions in Inches
A
Water
Gas
Width
B
Width
Model
Connections
Connections
Vent
Inlet Air
WO/Pump
Height
C
D
E
F
G
W/Pump
GW-1000
2 1/2
2
10
8
47
40 1/2
14
12 1/2
36 1/4
31 3/4
20 3/4
64
GW-1300
2 1/2
2
12
10
57 1/2
40 1/2
24 3/4
12 1/2
36 1/4
31 3/4
16 1/2
74 1/2
GW-1500
2 1/2
2
12
10
64 1/2
40 1/2
30
12 1/2
36 1/4
31 3/4
18
81 1/2
GW-1850
2 1/2
2 1/2
14
12
78 3/4
43 1/4
27 3/4
11 1/2
35 1/4
32 1/2
34 1/4
95 3/4
GW-2100
2 1/2
2 1/2
14
12
85 1/2
43 1/4
31
11 1/2
35 1/4
32 1/2
33 1/2
102 1/2
GW-2500
2 1/2
2 1/2
16
14
99 1/2
43 1/4
38
11 1/2
35 1/4
32 1/2
36 1/4
116 1/2
Maximum gas supply pressure is 13.8" W.C. for both Natural and Propane Gas.
The minimum supply gas pressure is 7" W.C. for Natural Gas.
The minimum supply gas pressure for Propane is 11.0" W.C.
Requires: 120V, 60 Hz, 30 Amps.