Rheem 621265, Installation And Owner'S Instructions, Page: 37 / 48

37
COMMISSIONING
TO FILL AND TURN ON THE WATER HEATER
The power supply to the water heater must not be switched on until the
water heater is filled with water
and a satisfactory megger reading is
obtained.
•
Open all of the hot water tap(s) in the building (don’t forget the showers)
and supply cock(s) and valve(s) in the system.
•
Open the isolation valves fully on the cold and hot water branches to the
water heater(s) installed in a bank.
•
Open the cold water isolation valve on the cold water line to the water
heater(s).
Air will be forced out of the taps.
•
Close each tap as water flows freely from it.
•
Check the pipe work for leaks.
•
Open the gas isolation valve fully.
•
Check the gas pipe work for leaks.
•
Switch on the electrical supply at the isolating switch to the water heater(s).
•
Check the pipe work again for leaks when the system has reached its
working temperature.
Warning:
Upon completion of the installation and commissioning of the water
heater, leave this guide with the householder or responsible officer.
DO NOT
leave this guide inside of the cover of the water heater, as it may
interfere with the safe operation of the water heater or ignite when the water
heater is turned on.