AMERICAN WATER HEATER COMPANY GH-90N/APPGH90N 100,000 BTU HYBRID NATURAL GAS RESIDENTIAL WATER HEATER 120/60/1 90% VOLTS:120 / PHASE:1 / CAPACITY:25 GALLONS / BTU'S:100,000EFFICIENCY:90% TEST PRESSURE:300 PSI / WORKING PRESSURE:150 PSI RECOVERY:21 USg/h @ 90F, ORFICE:1.7 mm, GAS PRESSURE MAX/MIN:14.0 in. wc/5.0 in. wc / MANIFOLD PRESSURE:4.2 in. wc COLD INLET CONNECTION SIZE:3/4" N.P.T. / HOT OUTLET CONNECTION SIZE:3/4" N.P.T