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Expansion Tank
(If Needed)
To Hot Water
Faucet (S)
Pressure
Relief Valve
Drain Valve
Discharge Line
(To Suitable Drain)
Remote Control
Gas Supply Line
Control Panel
Manual Gas
Appliance
Shut-Off
(Supplied)
Installing the 20HI Indoor Tankless Water Heater
Typical Installation (Some Items May Not Apply)
20HI Installation
Reference Vent Manufacture
Component Information Page 32
Vent Adapter *
1/4” Per Foot Downward Pitch
Wall Thimble*
Termination*
