Navien NPE-32AWE, Installation Manual

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1 9 Insta ll ing the Water Heater
3 . 3 .1 G as P i p e Material
WARNING
The water heater must be left running for 10 minutes
before checking the gas pressure, to obtain thermal
equilibrium.
The gas installation pipes must be made of suitable materials
and comply with the applicable legislation to this respect.
The gas connection must be made using a rigid pipe, inserting
a shut-off valve between the water heater and the pressure
regulator.
All the pipes must be suitably fixed in place.
3 . 3 . 2 P ro p ane G as I nstallations (LPG)
DANGER
Thoroughly check the seal and the drainage of the entire
installation, as a gas leak could cause serious damage.
If a propane-fired water heater is installed in an interior
room or compartment underground, one side of the
building must be open to the exterior.
If a gas tank is used, it must be installed in a cool,
shaded place away from direct sunlight. It must also
be thoroughly secured to prevent it from tipping over,
which could cause an explosion.
If the water heater is used with propane, a gas regulator suitable
for this type of gas must be installed. The connection and
installation must be made in accordance with the applicable
regulations and standards at the time of installation.
Note
The output pressure of the pressure regulator must be
in accordance with
S tandard EN 43 7 .
3 . 3 . 3 Measuring the I nlet G as P ressure
WARNING
The water heater cannot function properly without
sufficient inlet gas pressure. Measuring the inlet gas
pressure should be performed by a licensed professional
only.
The inlet gas pressure must be maintained between 1 7 mbar
and 25 mbar for natural gas and between 25 mbar and 35 mbar
for liquefied propane.
To measure the inlet gas pressure:
1. S hut off the manual gas valve on the gas supply line.
Gas Valve
Opened
Closed
2. Open a hot water faucet. The water heater should turn on
and the gas in the gas supply line will be purged.