Rheem 310 - Page 17

SAVE A SERVICE CALL
17
EXPANSION CONTROL VALVE RUNNING
If an expansion control valve is fitted in the cold water line to the water heater (refer to page 32) it may
discharge a small quantity of water instead of the temperature pressure relief valve on the water heater. The
benefit is that energy is conserved as the discharged water is cooler.
HIGHER THAN EXPECTED ELECTRICITY BILLS
With the installation of your new air sourced heat pump water heater, maximum electrical energy savings can
be achieved. Should you at any time, feel your electricity account is higher than expected, we suggest you
check the following points:
Is the water heater operating in booster or backup heating mode?
Prolonged periods of use where the ambient air temperature is outside of the heat pump‟s operating
range when heating is required or if there is a fault condition with the heat pump system will increase the
amount of boosting required to ensure a supply of hot water, increasing running costs.
Refer to “Heat Pump Is Not Operating” on page 14.
Is the relief valve running excessively?
Refer to “Temperature Pressure Relief Valve Running” on
page 16.
Is one outlet (especially the shower) using more hot water than
you think?
Refer to “Not Enough Hot Water” on page 13.
Is there a leaking hot water pipe, dripping hot water tap, etc?
Even a small leak will waste a surprising quantity of hot water and
energy. Replace faulty tap washers, and have your plumber rectify
any leaking pipe work.
Has there been an increase in hot water usage?
An increase in hot water usage will result in an increase in heat pump operation.
Has your water heating tariff rate been increased by your electricity retailer since your previous account?
Is the heat pump water heater on the same tariff as the water heater replaced?
The impact on an electricity account will depend upon the tariff arrangement of the water heater
replaced and where you live. Contact your energy provider for more information on tariff arrangements
and cost comparisons.
IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU NEED ASSISTANCE,
PHONE RHEEM SERVICE OR THEIR NEAREST ACCREDITED SERVICE AGENT.