Specifications

ABOUT YOUR WATER HEATER
8
DRAINING THE WATER HEATER
Switch off the electrical supply at the power outlet to the water heater.
Close the gas isolation valve at the inlet to the water heater.
Leave the cold water isolation valve open at the inlet to the water heater.
Open a hot tap (preferably the shower outlet) for 20 seconds, to purge any hot water left in the water
heater.
Close the cold water isolation valve, and leave the hot tap remain open.
Unscrew the two drain plugs, one each at the cold water inlet and transfer pipe connection, on the
underside of the water heater.
A portion of water will drain from the water heater.
In order to drain the remainder of water inside the water heater, raise the lever of the temperature
pressure relief valve. The easing lever on the valve is accessed by removing this plastic cover panel.
Refer to “Accessing the Temperature Pressure Relief Valve” on page 11.
When water stops flowing from the drain plugs, gently lower the lever of the temperature pressure relief
valve, refit the plastic cover panel and close the hot tap.
Note: It is recommended not to screw the drain plugs back in, until the water heater is to be turned on again.
HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY?
Installation requirements are shown on pages 17 to 22. The water heater must be installed:
by a qualified person, and
in accordance with the installation instructions, and
in compliance with Standards AS/NZS 3500.4, AS 5601 or AS/NZS 5601.1, as applicable under local
regulations, and all local codes and regulatory authority requirements.
Warning: Temperature controllers must not be fitted to this water heater (874 series) because water at a
temperature much higher than the controller setting can be delivered.
VICTORIAN CUSTOMERS
Notice to Victorian Customers from the Victorian Plumbing Industry Commission. This water heater must be
installed by a licensed person as required by the Victorian Building Act 1993.
Only a licensed person will give you a Compliance Certificate, showing that the work complies with all the
relevant Standards. Only a licensed person will have insurance protecting their workmanship for 6 years.
Make sure you use a licensed person to install this water heater and ask for your Compliance Certificate.