Water Heater By-Pass Valve - Winnebago Sunflyer Owner's Manual

4. Drain water heater tank if the coach is to be
stored or water heater will be Off during
freezing temperatures. (See Draining and
Storage Instructions in Atwood Water Heater
Operation Manual in your Owners InfoCase.
Pressure-Temperature Relief Valve
On occasion, water may be seen seeping from
the water heater pressure temperature relief
valve. This is no cause for repair or replacement
of the valve.
P-T Relief Valve
Normally there is an air gap at the top of the
water heater tank which acts as a pressure buffer.
In time, however, heated water may expand and
fill this air gap, causing a slight increase in water
pressure. This may cause the P-T valve to "weep"
until the air gap is manually replaced.
OPERATE THIS VALVE ONLY WHEN
THE WATER HEATER AND COOLING SYS-
TEM ARE COLD!
To Replace the Air Gap:
1. Turn off the water heater switch and incom-
ing water supply (city water and/or demand
pump).
2. Open a faucet in the motor home to relieve
water pressure.
3. Pull the handle of the P-T valve straight out
and allow water to flow until it stops.
APPLIANCES & INTERIOR FEATURES
Lift handle straight out to open P-T valve.
4. Let the handle of the P-T valve snap shut.
5. Close the faucet and turn on the water supply
before switching the water heater on.
Manually operate the pressure temperature re-
lief valve at least once a year.

WATER HEATER BY-PASS VALVE

Your coach may be equipped with a water
heater by-pass valve for easier winterization of
water lines using RV antifreeze.
See "Water System Drain Valve Locations" at
the end of Section 7 - Plumbing for location of
the water heater bypass valve for your model
coach.
NOTE: Your coach is not equipped with this
valve if you have the optional automatic
winterization system
Normal
Flow
SECTION 8
Open
By-Pass
Mode
8-11