Natural Gas Input Min. 19,500 Btu  Max. 140,000 Btu 
LPG Input Min. 17,500 Btu  Max. 140,000 Btu 
Gas Connection 3/4" NPT   
Water Connection 3/4" NPT   
Natural Gas Pressure Inlet Min. 5.5" W.C.  Max. 10.5" W.C. 
LP Gas Pressure Inlet Min. 9.5" W.C.  Max. 14" W.C. 
Weight 32 lbs   
Dimensions 20" x 14" x 6"   
Ignition Electronic Ignition   
Electrical Supply AC 120V (60 Hz)   
Water Pressure Min. 15 psi  Max. 150 psi 
Natural Manifold Pressure 3.2" W.C.   
LP Manifold Pressure 3.2" W.C.   
Direct Vent Conversion Kit
The TK-TV09 Direct venting kit converts the tankless unit from a conventional vent system to a direct vent (or sealed combustion) system.
Outdoor Ventilator Cap
The TK-TV04 vent cap kit is installed on the top of the unit to allow outside installation of the tankless unit.
Sidewall Vent Terminator (Hood) and Wall Thimble
The TK-KPWH4 T-Vent wall thimble with hood termination is used when venting out through the wall and are compatible with the T-Vent pipe system.
Isolation Valves & Pressure Relief Valve
Isolation valves are used to isolate a unit for service. The Pressure Relief Valve is to help protect the unit and release if the pressure in the tankless water heater or hot water system exceeds 150 psi.
Exhaust Backflow Prevention Kit
The TK-BF01 prevents cold air from entering the vent and causing heat exchanger to freeze.
Temperature Remote Controller
The 9007666005 Temperature Remote Controller allows the output temperature to be adjusted beyond the factory settings, and works as a diagnostic tool for error codes.