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305, 505, 705 Indoor Manual 3
Specifications
Specifications are subject to change without prior notice.
The maximum inlet gas pressure must not exceed the value specified by the manufacturer. The minimum value
listed is for the purpose of input adjustment.
* Minimum flow may vary slightly depending on the temperature setting and the inlet water temperature.
** for commercial and hydronic applications requiring higher temperatures
Model
305
505 705
Minimum Gas Consumption Btu/h 15,000 19,000
Maximum Gas Consumption Btu/h 180,000
199,000 Natural Gas
190,000 Propane Gas
237,000
Hot water capacity (Min - Max) *
0.6 - 7.5 GPM
(2.3 - 28.4 L/min)
0.6 - 9.4 GPM
(2.3 - 35.5 L/min)
0.6 - 9.8 GPM
(2.3 - 37 L/min)
Hot water capacity (45°F rise) 6.6 GPM (25.0 L/min)
7.4 GPM (28.0 L/min)
Natural Gas
7.1 GPM (26.9 L/min)
Propane Gas
8.8 GPM (33.5 L/min)
Default Temperature Setting (no controller) 120º F (49º C)
Temperature Controller Default Setting 104º F (40º C)
Maximum Temp Setting (Commercial) ** 160º F (71º C) 185º F (85º C)
Maximum Temp Setting (Residential) Selectable at 120º F (49º C) or at 140º F (60º C) 140º F (60º C)
Minimum Temperature Setting 98º F (37º C)
Weight 50 lb (23 kg) 55 lb (25 kg)
Efficiency Rating 84%
Noise level 49 dB
Electrical Consumption
Normal 65 W 79 W 99 W
Standby
Anti-frost Protection 100 W 116 W
By-Pass Control Fixed Electronic
Minimum Gas Supply
Pressure
Natural Gas 5.0 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 Direct Vent, Temperature controlled continuous flow gas hot water system.
Operation With or without temperature controls, mounted in kitchen, bathroom, etc.
Approved Gas Type Natural Gas or Propane - Ensure unit matches gas type it's being installed on.
Connections Gas Supply: 3/4" MNPT, Cold Water Inlet: 3/4" MNPT, Hot Water Outlet: 3/4" MNPT
Ignition System Direct Electronic Ignition
Electric Connections Appliance: AC 120 Volts, 60Hz. Temperature Control: DC 12 Volts (Digital)
Water Temperature Control Simulation Feedforward and Feedback.
Water Supply Pressure Minimum Water Pressure: 20 PSI (Recommended 30-80 PSI for maximum performance)
Maximum Water Supply Pressure 150 PSI
Temperature Control Cable Non-Polarized Two Core Cable (Minimum 22 AWG)
Energy Star Qualified Yes Yes No
2 W