Installation manual

Rinnai Australia - 13 - HOTFLO Electric Storage Water Heater Operating/Installation Manual
Commissioning and draining activities must be carried out by an authorised person.
To fill and turn ‘ON’ the water heater
• Open all hot water taps in the house, including the shower.
• Open the cold water isolation valve to water heater. Air will now be forced out of the taps.
• Close each tap when water runs freely without air bubbles.
• Check all plumbing connections and pipe work for water leaks.
• Switch on the electric power supply.
To turn ‘OFF’ the water heater
It may be necessary to turn off a water heater after installation and commissioning, for example during building
activities or if the premises are vacant.
To turn ‘OFF’ the water heater:
• Switch off the electricity supply at the isolating switch to the water heater.
• Unplug the power supply cord from the power outlet (only for models fitted with power supply cord).
• Close the cold water isolation valve at the inlet to the water heater.
Draining
To drain the water heater:
• Turn off the water heater.
• Close all hot water taps.
• Operate the PTR valve release - gently. Operating the PTR valve release will relieve the pressure in the
water heater.
• Undo the cold water inlet union. Attach a hose to the water heater side of the union. Let the other end of
the hose go to a drain.
• Operate the PTR valve again. This allows air into the water heater and will result in water draining through
the hose.
• Do not switch on the electric power supply until the water heater is filled completely with
water.
WARNING
COMMISSIONING