Rheem Water Heater Manuel D’Utilisation

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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: 
 
• 
• 
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 
 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 
 on page 52).