4-11
SECTION 4
APPLIANCES & SYSTEMS
Class A
To Replace the Air Gap:
1. Turn off the water heater switch and incoming
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.
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
relief valve at least once a year.
*If your water heater is equipped with the
optional Motor Aid system, it uses an extension
from the engine cooling system to heat water in
the water heater while driving. The engine
cooling system must also be cold before opening
the pressure-temperature relief valve. See
“Motor Aid” for more information.
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.
Turn the handle as shown to either by-pass or
flow through the water heater.
ELECTRIC ENTRANCE STEP
The power switch for the electric entrance step
is located to the left of the main entry door as you
enter the coach.
Open
Lift handle straight out to open P-T valve
CAUTION
Leave by-pass valve handle in NORMAL
FLOW position if draining water and
blowing out water lines. Place in BYPASS
position ONLY when using antifreeze
solution in water lines.
Normal
Flow
By-Pass
Mode
