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GWH 450 ESR |
Rated Efficiency
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81%
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| Power Input |
120,000 BTU/Hr |
Maximum Output
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98,400 BTU/Hr
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Minimum Output
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35,500 BTU/Hr |
Water Temp in Heating Circuit*
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115°F - 190°F |
Maximum Exhaust Vent Length
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39' with one elbow** |
| Dimensions |
H: 27½" W: 15¾" D: 11½" |
| Weight |
47 lbs. |
| Modulating Gas Valve |
Yes |
*Temperature setting range **(90° elbow equals 6'; 45° elbow equals 3')
| Installation Specifications |
| Gas Connection |
¾" Male NPT |
| Water Connections |
½" Male NPT |
| NG Gas Pressure |
Minimum: 5.5" WC
Maximum: 8" WC |
| LP Gas Pressure |
Minimum: 11" WC
Maximum: 14" WC |
Electrical Supply
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120 VAC - plugs in |
Exhaust Vent Size
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3" AL 29-4C single wall
sealed stainless steel
vent pipe (Z-Flex,
Protech, Heat Fab) |
Intake Vent Size
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3" Aluminum Flex, PVC
or any other rigid or
semi-rigid sealed pipe |
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