REGULAR CARE
11
TEMPERATURE PRESSURE RELIEF VALVE
This valve is near the top of the water heater and is essential for its safe operation. It is possible for the valve
to release a little water through the drain line during each heating period. This occurs as the water is heated
and expands by approximately 1/50 of its volume.
Continuous leakage of water from the valve and its drain line may indicate a problem with the water heater
(refer to
“Temperature Pressure Relief Valve Running”
on page 15).
Warning:
Never block the outlet of this valve or its drain line for any reason.
Operate the easing lever on the temperature pressure relief
valve once every six months.
It is very important you raise
and lower the lever gently.
The valve connects to the top of the cylinder and is located
underneath the plastic cover panel on the front of the water
heater. The easing lever on the valve can be accessed by
removing this plastic cover panel. Refer to
“Accessing the
Temperature Pressure Relief Valve”
on page 11.
DANGER:
Failure to do this may result in the water heater
cylinder failing, or under certain circumstances, exploding.
Warning:
Exercise care to avoid any splashing of water, as water discharged from the drain line will be
hot. Stand clear of the drain line‟s point of discharge when operating the valve‟s lever.
If water does not flow freely from the drain line when the lever is lifted, then the water heater must be
checked. Phone Rheem Service or their nearest Accredited Service Agent to arrange for an inspection.
The temperature pressure relief valve should be replaced at intervals not exceeding 5 years, or more
frequently in areas where there is a high incidence of water deposits (refer to
“Water Supplies”
on page 12).
Accessing the Temperature Pressure Relief Valve
The plastic cover panel is required to be
removed to access to temperature pressure
relief valve.
To access the valve:
1.
Push the bottom end clip upwards and
gently pull out the plastic cover panel at the
bottom to disengage the clip.
2.
Disengage the plastic cover panel from the water heater by
pushing the top end of the panel downwards.
3.
Remove the plastic cover panel while holding both the
bottom and top ends of the panel.
4.
Re-install the plastic cover panel securely by reversing the
steps above.
Note:
The plastic cover panel forms part of the water heater. It
must be
resecured properly after servicing.
EXPANSION CONTROL VALVE
In many areas, including South Australia, Western Australia and scaling water areas, an expansion control
valve is fitted to the cold water line to the water heater. The expansion control valve may discharge a small
quantity of water from its drain line during the heating period instead of the temperature pressure relief valve
on the water heater.
Operate the easing lever on the expansion control valve once every six months.
It is very important you
raise and lower the lever gently.
The expansion control valve should be checked for performance or
replaced at intervals not exceeding 5 years, or more frequently in areas where there is a high incidence of
water deposits.
lift until water
flows from the
drain line
–
lower gently
hot
water
cylinder
drain
line
Step 3
Step 1
Step 2
