Rheem 872 Series Owner's Manual And Installation Instructions page 12

Continuous flow gas water heater
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ABOUT YOUR WATER HEATER
SERVICE EVERY TWELVE MONTHS
For safe and efficient operation, it is recommended a service be conducted on the water heater every
twelve (12) months.
Warning: Servicing of a water heater must only be carried out by qualified personnel. Phone Rheem
Service or their nearest Accredited Service Agent / Centre.
Note: The service and routine replacement of any components, if required, are not included in the Rheem
warranty. A charge will be made for this work. Only genuine replacement parts should be used on this water
heater.
The service includes the following actions:
Check and if necessary adjust the gas pressure.
Check the operation of and clean the burner.
Check and clean the line strainer.
Visually check the unit for any potential problems.
Inspect all connections.
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater:
Turn off the controller(s) (if fitted) by pressing the on / off ( ) button.
The on / off operating light will go out and the priority light, if it is on, will go out.
Switch off the electrical supply at the power outlet to the water heater if there is no risk of freezing
conditions occurring (refer to note below).
Close the gas isolation valve at the inlet to the water heater.
Close the cold water isolation valve at the inlet to the water heater.
If there is a risk of freezing conditions, the electrical supply to the water heater should not be switched
Note:
off unless the water heater is drained, otherwise damage could result (refer to
"Draining the Water Heater"
and
TO TURN ON THE WATER HEATER
Screw in the drain plugs at the cold water inlet and hot water outlet of the water heater if the water heater
has been drained.
Open all of the hot taps in the house (don't forget the shower).
Open the cold water isolation valve fully at the inlet to the water heater.
Air will be forced out of the taps.
Close each tap as water flows freely from it.
Open the gas isolation valve fully at the inlet to the water heater.
Plug in the power supply cord at the power outlet.
Switch on the electrical supply at the power outlet to the water heater.
Turn on a controller, if one is fitted, by pressing the on / off ( ) button.
The on / off operating light and the priority light will both glow.
The water heater will operate automatically when you open a hot tap.
on page 13).
in use
priority
°C
8 8
10L
X
12
"Frost Protection"
on page 11

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