Rheem Optima Owner's Manual And Installation Instructions page 16

SAVE A SERVICE CALL
Water heater size
Do you have the correct size water heater for your requirements? The sizing
guide in the Rheem sales literature and on the Rheem website
(www.rheem.co.nz)
TEMPERATURE PRESSURE RELIEF VALVE RUNNING
Normal Operation
It is normal and desirable that this valve
allows a small quantity of water to escape
during the heating cycle. However, if it
discharges more than a bucket full of water
in 24 hours, there may be another problem.
Continuous dribble
Try gently raising the easing lever on the
relief valve for a few seconds (refer to
"Temperature Pressure Relief Valve"
page 9). This may dislodge a small particle
of foreign matter and clear the fault.
Release the lever gently.
Steady flows for long period (often at
night)
This may indicate the mains water pressure
sometimes rises
pressure of the water heater. Ask your
installing plumber to fit a pressure limiting
valve.
Heavy flows of hot water until water heater is cold - then stops until
water reheats
The water heater must be switched off at the switchboard. Phone a Rheem
Service Centre
Warning: Never replace the relief valve with one of a higher pressure
rating.
suggests average sizes that may be needed.
above the designed
16
on