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Tighten the water heater connection
Note
●
valves with care to avoid damage.
The gas connection fitting on all
●
water heaters is
When using flexible gas lines, ensure
●
that the pipe's inner diameter and
connector is sufficient to supply the
required BTUs. Also, ensure that the
flexible line has no crimps or tight
bends in it, as this will restrict gas
flow.
When using rigid pipe, Navien
●
recommends the installation of a
union on the gas supply line close
to the water heater, to facilitate any
future maintenance or service.
NOTICE
Prior to using an excess flow valve (EFV) in the
gas line, check the manufacturer's minimum
and maximum flow capacity rating.
improperly sized EFV will not allow for a full
flow of gas to the water heater and may cause
improper operation.
CLOSE:
MAX OPER: 135
BYPASS:
CLOSE:
195
MAX OPER:
135
BYPASS:
5
Excess Flow Valve
/
in.
3
4
An
195
5
Typical Propane Gas piping examples:
2 Stage System with Multiple
Regulators (Recommended)
Gas Regulators
(2 Stage)
High
Pressure
Regulator
Gas Tank
Single Regulator System
Gas Regulator
12 in W.C.
Pipe
Gas Tank
Low Pressure
Regulator
(before entering
home or building)
Full Size
Gas Pipe
Full Port
Gas
Shut-Off
Valve
Full Size Gas Pipe
Full Size
Gas Pipe
Full Port
Gas
Shut-Off
Valve
Installing the Water Heater
21
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