Pressure Temperature Relief Valve; Re-Establishing The Air Pocket - Monaco DIPLOMAT 2004 Owner's Manual

DIPLOMAT 2004
Pressure
Temperature Relief
Valve
4 •188
The water heater is equipped with a Pressure-Temperature relief valve.
The water heater may discharge from the Pressure-Temperature relief valve
during the heating cycle due to thermal expansion of water. The Pressure-
Temperature relief valve is designed to open if the water temperature in the
tank reaches 210° F (98.8° C), or if internal pressure reaches 150 psi. A small
discharge is normal and is not necessarily a faulty valve. The water heater
has an internal air pocket to reduce the possibility of dripping or weeping.
Eventually, the expansion of the water will absorb the air pocket. When
this occurs, the air pocket will have to be replaced utilizing the following
procedure.
CAUTION: Ensure the water heater tank is cool prior to making
any check of the valve.
040424C
The air pocket is re-established and the process does not need to be
repeated until the next discharge of water from the T & P valve. If the
discharge does not stop, contact a qualified service center to evaluate the
valve and make any required repairs.

Re-establishing the Air Pocket:

Step 1: Turn OFF the water heater.
Step 2: Shut OFF the incoming water
supply.
Step 3: Open the hot water faucet closest
to the water heater.
Step 4: Pull the handle of the relief valve
until the flow of water stops.
Step 5: Close the relief valve allowing it
to snap shut. Close the hot faucet
and turn ON the water supply.
Step 6: Turn ON the water heater.
APPLIANCES