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INSTALLATION
FREEZE PROTECTION
The water heater has a freeze protection system. The freeze protection system
will protect the water heater from damage, by preventing ice forming in the
waterways of the water heater, in the event of freezing conditions occurring.
If the ambient air temperature falls below 1°C and the heat pump is not
operating, the system will operate the circulator periodically. During this freeze
protection cycle, the circulator will operate for thirty (30) seconds and then rest
for fifteen (15) minutes, before the cycle is recommenced. Water is circulated
from the storage tank through the heat pump circuit, to prevent freezing in the
connecting pipe work and heat pump module. The green LED will flash a series
of four (4) flashes whilst the circulator is operating.
The water heater has NO WARRANTY for freeze damage if power is
unavailable at the water heater.
Warning: In areas where the ambient air temperature may fall below 1°C,
power must be available to the water heater at all times to prevent freezing in
the heat pump circuit.
MAINS WATER SUPPLY
Where the mains water supply pressure exceeds that shown in the table below,
an approved pressure limiting valve is required. Refer to the Owner‟s Guide
and Installation Instructions supplied with the storage tank for the position of
the pressure limiting valve.
Model
Relief valve setting
Expansion control valve setting *
Max. mains supply pressure
With expansion control valve
Without expansion control valve
Min. mains supply pressure
* Expansion control valve not supplied with the water heater.
A minimum water supply pressure of 200 kPa is required to enable the heat
pump circulator and heat pump system to operate effectively.
325, 410
1000 kPa
850 kPa
680 kPa
800 kPa
200 kPa
6
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