COMMISSIONING
47
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:
• Shut down the gas control (refer to “Close Down Procedure” on page 51).
• Close the gas isolation valve at the inlet to the gas control.
• Switch off the electrical supply at the isolating switch to the water heater
(refer to note below).
• Close the cold water isolation valve at the inlet to the water heater.
Note: The freeze protection system will be rendered inoperable if electrical
power is not available. Damage caused by freezing due to the unavailability of
power to the water heater is not covered by warranty (refer to
“Warranty
Exclusions”
on page 59). If there is a risk of freezing, then it is necessary to
drain the solar collectors and connecting pipe work (refer to
“Draining the Solar
Collectors”
on page 52).
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