COMMISSIONING
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Heat pump operating range (power must be available to the heat
pump)
The heat pump‟s operating range is when the ambient air temperature is
5°C or higher.
If the ambient air temperature is between 0°C and 5°C and heating is
required, the heat pump will commence operating and after a period of
time, heating will switch from the heat pump to the booster heating unit in
booster heating mode (three red flashes, green LED is off). At the
completion of this heating cycle by the booster heating unit (three red
flashes), the green LED will glow (standby mode – water is hot) and the
red LED will go out.
If the ambient air temperature drops below 0°C, the red LED will display a
solid glow and the green LED will be off. This will occur whether or not the
water heater is up to temperature or the booster heating unit is heating. If
a call for heating is received, the water heater will automatically heat in
booster heating mode. At the completion of this heating cycle by the
booster heating unit (solid red glow), the red LED will continue to display a
solid glow and the green LED will remain off.
Note: During the heating cycle in booster heating mode due to a cold
ambient air temperature condition, the heating of the water by the heat
pump will recommence (4 x green flashes) and the booster heating unit
will turn off (red LED goes out) if the ambient air temperature increases to
back within the heat pump‟s operating range. Likewise, the water heater
will switch to the booster heating unit (three red flashes or solid red glow,
green LED is off) if, during a heat pump heating cycle, the ambient air
temperature decreases to outside of the heat pump‟s operating range.
The water temperature in the upper part of the water heater at the end of a
heating cycle will be 60°C.
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