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COMMISSIONING
76
13. Repeat steps 2 to 5.
if the water temperature is still below:
48°C (if a temperature controller is to be connected), or
50°C (if no temperature controller is to be connected)
and requires to be increased, repeat steps 10 to 12, followed by steps 2 to 5 until an acceptable
water temperature not exceeding 48°C or 50°C respectively is measured at the same hot tap.
if the water temperature exceeds 48°C or 50°C respectively then;
switch DIP SWITCH 3 to the on (up) position on the I.C. Board.
The temperature setting will show on the LED display.
press the MIN button once to decrease the preset outlet temperature setting to the next
increment.
Each press of the MIN button will decrease the preset temperature by one increment.
The MIN button is located below the DIP switches.
switch DIP SWITCH 3 to the off (down) position on the I.C. Board.
The LED display will go blank.
repeat steps 2 to 5 to confirm the water temperature does not exceed 48°C or 50°C
respectively.
14. Switch off the electrical supply at the power outlet to the water heater.
15. Reconnect the controller cables (if a temperature controller is fitted), by following steps 4 to 6 of the
procedure “Connecting the Controller(s) to the Water Heater” on page 67.
16. Refit the front panel and screws to the water heater.
17. Switch on the electrical supply at the power outlet to the water heater.
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater on completion of the installation, such as on a building site or
where the premises is vacant, then:
Turn off the controllers(s) (if fitted) by pressing the on / off (
X 10L
88
°C
) 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 (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.
Drain the water heater if there is a risk of freezing conditions occurring (refer to “Draining The Water
Heater” on page 77).
Notes:
The frost protection system will be rendered inoperable if electrical power is not available at the water
heater.
Damage caused by freezing due to the unavailability of power at the water heater is not covered by the
Rheem warranty (refer to “Terms of the Rheem Warranty” on page 79).
If the power has been switched off to the water heater and there is a risk of freezing, then it is necessary
to drain the water heater (refer to “Draining the Water Heater” on page 77).
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