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Model
Minimum Gas Consumption Btu/h
Maximum Gas Consumption Btu/h
Hot water capacity (Min - Max) *
Hot water capacity (45°F rise)
Default Temperature Setting (no controller)
Temperature Controller Default Setting
Maximum Temp Setting (Commercial) **
Maximum Temp Setting (Residential)
Minimum Temperature Setting
Weight
Efficiency Rating
Noise level
Normal
Electrical Consumption
Standby
Anti-frost Protection
By-Pass Control
Natural Gas
Minimum Gas Supply
Pressure
Propane
Natural Gas
Maximum Gas Supply
Pressure
Propane
Type of Appliance
Operation
Approved Gas Type
Connections
Ignition System
Electric Connections
Water Temperature Control
Water Supply Pressure
Maximum Water Supply Pressure
Temperature Control Cable
Energy Star Qualified
* Minimum flow may vary slightly depending on the temperature setting and the inlet water temperature.
** for commercial and hydronic applications requiring higher temperatures
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.
Specifications
305
15,000
180,000
0.6 - 7.5 GPM
(2.3 - 28.4 L/min)
6.6 GPM (25.0 L/min)
160º F (71º C)
Selectable at 120º F (49º C) or at 140º F (60º C)
50 lb (23 kg)
65 W
100 W
Fixed
Direct Vent, Temperature controlled continuous flow gas hot water system.
With or without temperature controls, mounted in kitchen, bathroom, etc.
Natural Gas or Propane - Ensure unit matches gas type it's being installed on.
Gas Supply: 3/4" MNPT, Cold Water Inlet: 3/4" MNPT, Hot Water Outlet: 3/4" MNPT
Appliance: AC 120 Volts, 60Hz. Temperature Control: DC 12 Volts (Digital)
Simulation Feedforward and Feedback.
Minimum Water Pressure: 20 PSI (Recommended 30-80 PSI for maximum performance)
Non-Polarized Two Core Cable (Minimum 22 AWG)
Yes
305, 505, 705 Indoor Manual
505
199,000 Natural Gas
190,000 Propane Gas
0.6 - 9.4 GPM
(2.3 - 35.5 L/min)
7.4 GPM (28.0 L/min)
Natural Gas
7.1 GPM (26.9 L/min)
Propane Gas
120º F (49º C)
104º F (40º C)
185º F (85º C)
98º F (37º C)
84%
49 dB
79 W
2 W
Electronic
5.0 inch W.C.
8.0 inch W.C.
10.5 inch W.C.
13.5 inch W.C.
Direct Electronic Ignition
150 PSI
Yes
705
19,000
237,000
0.6 - 9.8 GPM
(2.3 - 37 L/min)
8.8 GPM (33.5 L/min)
140º F (60º C)
55 lb (25 kg)
99 W
116 W
No
3
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