Water Heater Pressure Temperature Relief Valve - Winnebago 2005 Rialta Owner's Manual

The drain is attached to a tube that exits
through the floor of the coach. You can let the
water drain onto the ground or into a suitable
container.
Also open the Pressure-Temperature relief
valve at the top right portion of the tank to pre-
vent air locking in the tank while draining. See
"Pressure-Temperature Relief Valve".
To drain the water heater: Turn the valve all
the way to the left (counterclockwise) to the stop
position.
To close the valve: Turn the valve to the right
(clockwise) to the stop position.
Model 22FD: The water heater drain valve is
located below an access hole beneath the bed-
board at the head of the rear bed in the left
(driver side) rear of the coach. Lift or remove the
bed mattress to expose the access hole.
Beneath Rear Bed Mattress - Model 22FD
Model 22QD/22HD: The water heater drain
valve is located beneath the left rear dinette seat.
Lift the seat cushion assembly to access the
valve.
APPLIANCES & INTERIOR FEATURES
Beneath Left Rear Dinette - Model 22QD/22HD
WATER HEATER 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.
Normally, there is an air gap at the top of the
water heater tank which acts as a pressure buffer.
In time, however, expanding water may absorb
this air gap, causing a slight increase in pressure.
This may cause the P-T valve to "weep" until the
air gap is replaced manually.
Pressure-Temperature Relief
SECTION 8
Water Heater
(P-T) Valve
8-7