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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.