4-9
SECTION 4 –
APPLIANCES AND SYSTEMS
PRESSURE-TEMPERATURE
RELIEF VALVE (TANKLESS
WATER HEATER)
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.
Normally there is an air gap at the top of the
heat exchanger, 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.
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 motorhome 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.
PROPANE GAS FURNACE
To Start Up
1. Turn ON the LP Tank valve switch.
2. Slide the Thermostat switch from OFF to Heat
and press the Temp Selector button (up/down
arrows) until the desired temperature is shown
on the display.
CAUTION
Hot water can escape from tank causing
injury. Operate this valve only when the
tank water is cold.
Water Heater Exterior Service Access
-Typical View
• Lift handle straight out to open P-T valve
when water heater is cold.
-Typical View
LP Tank
Valve
Switch
