Navien NHB H Series, Инструкция по установке и эксплуатации

Страница: 47 / 143

47 Connecting the Gas Supply
Navien recommends connecting the boiler as the
first appliance downstream of the gas meter, to
ensure a sufficient gas supply.
The boiler is
recommended to be
the first appliance to
be connected to the
gas supply line.
Gas meter capacity ≥ The total
capacity of connected appliances
Gas Supply Line
To connect the gas supply:
1. Determine the gas type and pressure for the
boiler 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.
Note
Refer to the instructions provided
with the gas regulator for the
minimum pipe distance between the
regulator and the appliance.
5. Install certified full port valves on the gas supply
line and boiler.
6. Connect the gas supply line.
7. Test the supply line, all connection points, and
the boiler for gas leaks.
Note
Tighten the boiler connection valves
with care to avoid damage.
Gas Inlet Adapter
Bottom View
Union
Gas Shut off
Valve
Gas Supply
NOTICE
●
Install a manual gas shut-off valve between
the gas supply line and the boiler.
●
A sediment trap must be provided upstream
of the gas controls.