Installation considerations – State GPG 81 370NEA User Manual
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table 2. heater performance data gpg models
models
storage
capacity
u.s. gallons
input rating btu/hr.
recoVery rate
gph@100°f rise
recoVery rate
gph@140°f rise
maXimum
amperes
120V, 60hz, 10
GPG 81-140
81
140,000
136
97
5
GPG 81-199
81
199,000
193
138
5
GPG 81-270
81
270,000
262
187
5
GPG 81-370
81
370,000
359
256
5
models with letter “A” following the model number have the optional ASme tank construction
.
**The GPG 81-370 is available in natural gas only.
table 3. gas and electrical characteristics
model
Type of Gas
Gas Supply Pressure
Gas manifold Pressure
Volts/Hz
amperes
minimum
maximum
All models
Natural
4.5" W.C. (1.12 kPa)
14" W.C. (3.48 kPa)
3.5" W.C. (0.87 kPa)
120/60
<5
All models
* Propane
4.5" W.C. (1.12 kPa)
14" W.C. (3.48kPa)
3.5" W.C. (0.87 kPa)
120/60
<5
* model GPG 81-370 is not available in Propane
installation considerations