Specifications

ABOUT YOUR WATER HEATER
8
FROST PROTECTION
The in-series gas booster has a frost protection system. The frost protection system will protect the in-series
gas booster from damage, by preventing ice forming in the waterways of the in-series gas booster, in the
event of freezing conditions occurring.
Notes:
The frost protection system will be rendered inoperable if electrical power is not available at the water
heater. Damage caused by freezing due to the unavailability of power at the water heater is not covered
by the Vulcan warranty (refer to “Terms of the Vulcan Warranty” on page 31).
If it is necessary to switch the power off to the water heater and there is a risk of freezing, then it is
necessary to drain the water heater (refer to “Draining the Water Heater” on page 8).
Pipe work to and from the water heater must be adequately insulated to prevent freezing.
The water heater is not suitable for installation in areas where the ambient temperature falls below -20°C
(including wind chill factor).
Refer to “Terms of the Vulcan Warranty” on page 31.
DRAINING THE WATER HEATER
Turn off the water heater (refer to “Turn Off The Water Heater” on page 7).
Open a hot tap (preferably the shower outlet).
Unscrew the two drain plugs, one each at the solar heated water inlet and hot water outlet, on the
underside of the water heater.
Water will drain from the water heater.
When water stops flowing from the water heater, 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.