16
Plumbing Systems
If the water heater is not properly derated, poor eciency in
heating the water may occur due to incomplete combustion.
You may also notice pilot outage caused by burner lift-o or
sooting from a yellow burner, indicating the possibility of
carbon monoxide.
For proper change out of the orifice (derating) consult with
a local propane company, your dealer, or the water heater
manufacturer.
IMPORTANT NOTE: Once the RV is returned to lower elevation
(below 4500 feet) any high altitude deration or other the water
heater adjustments must be reversed for proper operation.
Pressure & Temperature Relief Valve
The Pressure and Temperature Relief Valve (P & T Valve) is a
safety requirement for all water heaters. As cold water is heated,
pressure in the water heater tank increases. The P & T Valve will
release any unsafe pressure from the water heater tank.
It is normal for a small quantity of water to also be released from
the P & T valve during the heating cycle. To reduce water dripping
from the P & T relief valve:
• Maintain an air pocket at the top of the water heater.
(refer to the manufacturer’s manual).
◦ This air pocket forms in the tank by design.
◦ Everyday use of your water heater will reduce
this air pocket over time.
If the weeping persists, consult your dealer or a service
agency authorized by the water heater manufacturer.
Pressure and Temperature
Relief Valve
DO NOT replace any
component part with
an accessory part that
is not authorized by the
water heater manufacturer,
such as an add-on electric
heating element.
Such items are not approved
to be installed and could
create an unsafe condition
and will void all warranties.
Water temperatures over
125°F (49°C) can cause
severe burns instantly or
even death from scalds.
BE CAREFUL WHEN
USING HOT WATER.
ALWAYS test the water
temperature BEFORE
showering or washing.
Exterior Water
Heater Door
(see photo below)
If the water heater does not
work, make sure the power
switch is in the ON position.
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