19Installing the Water Heater
To connect the gas supply:
1. Determine the gas type and pressure for the water heater by
referring to the rating plate.
2. Perform a pressure test on the main gas supply line.
3. Purge the gas line of any debris.
4. Determine the proper size and type for the gas line. Refer to
the tables that follow.
5. Install certified full port valves on the gas supply line and water
heater.
6. Connect the gas supply line.
7. Test the supply line, all connection points, and the water
heater for gas leaks.
Union
Gas Shutoff Valve
Gas Supply
Gas Inlet Adapter
Bottom View
Pipe Size:
1
/
2
in to
3
/
4
in
(inner diameter)
Navien recommends connecting the water heater as the first water
heater downstream of the gas meter, to ensure a sufficient gas
supply.
The water heater is
recommended to be the first
appliance to be connected
to the gas supply line.
Gas Supply Line
Gas Meter’s Capacity ≥ Total Gas
Capacity of Connected Appliances
To Next Page
Loading...
Need help?
General
