User Guide

28 RH180 Manual
Technical Data
Specicaons
Rinnai is connually updang and improving products. Therefore, specicaons are subject to change without
prior noce.
The maximum inlet gas pressure must not exceed the value specied by the manufacturer. The minimum value
listed is for the purpose of input adjustment.
Model RH180
Minimum Gas Consumpon Btu/h
Natural Gas: 59,500 BTU/Hr
Propane: 47,600 BTU/Hr
Maximum Gas Consumpon Btu/h
Natural Gas: 91,300 BTU/Hr
Propane: 87,300 BTU/Hr
First Hour Rang 180 GPH
Storage Tank Volume 40 gallons
Recovery (90° Rise) 89 GPH
Temperature Selecons 110, 120, 130, 135, 140
Maximum Temp Seng 140º F (60º C)
Minimum Temperature Seng 110º F (43º C)
Weight 150lb (68kg)
Thermal Eciency 80%
Noise level 50 dB
Electrical Consumpon
Standby 3 Was
Operaon 150 Was
Fuse 5 Amps
Minimum Gas Supply
Pressure
Natural Gas 4.0 inch W.C.
Propane 8.0 inch W.C.
Maximum Gas Supply
Pressure
Natural Gas 10.5 inch W.C.
Propane 13.5 inch W.C.
Type of Appliance Automac Circulang Tank Water Heater
Approved Gas Type Natural Gas or Propane - Ensure unit matches gas type supplied at the installaon locaon.
Connecons
Gas Supply: 1/2” MNPT,
Cold Water Inlet: 3/4” MNPT,
Hot Water Outlet: 3/4" MNPT
Ignion System Direct Electronic Ignion
Electric Connecons Appliance: AC 120 Volts, 60Hz.
Water Temperature Control Simulaon Feedforward and Feedback.
Water Supply Pressure Minimum Water Pressure: 20 PSI (Recommended 30-50 PSI for maximum performance)
Maximum Water Supply Pressure 150 PSI
Flammable Vapor Sensor
Sensor and Switches
Combuson Air Co Sensor
Bi-Metal Overheat Switch