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User Guide
4. GENERAL INFORMATION
• During periods of heat pump operation, notably during
defrost cycles, a plume of steam may be visible. This
is normal and due to moisture and/or ice formation
evaporating.
• During periods of heat pump operation, the appliance will
produce condensate water.
• During periods of heat pump operation, both the evaporator
fan and compressor speed will change, dependent upon the
prevailing conditions and heat output level required. Due
to this there may be a noticeable change in the appliance
noise levels and tone which is normal.
• The area directly around the heat pump should be kept
the heat pump such as leaves, litter etc. should be removed
• The area directly around the control box should be kept
clear at all times. Items such as wet laundry should not
be placed upon the control box and general clearances
illustrated within the Installation Manual must be respected.
CLEANING
ᘐ CAUTION: The heat pump contains sensitive
components that may be damaged by the use of hose
pipes or high-pressure washers.
DO NOT use abrasive cleaning agents when cleaning the
heat pump.
HP290 Monobloc Heat Pump Casing:
For normal cleaning of the heat pump casing use a weak soap
pressure hose or low-pressure spray bottle only.
HP290 Control Box/HP290 Controller:
For normal cleaning simply dust with a dry cloth. For stubborn
cloth.
Domestic Hot Water Cylinder:
For normal cleaning simply dust with a dry cloth. For stubborn
cloth.
MAINTENANCE
The frequency of servicing will depend upon the installation
condition and usage, but it should be carried out at least
annually by a competent heat pump engineer.
5. BASIC HEAT PUMP OPERATING PRINCIPLE
The heat pump contains a sealed and closed loop refrigerant
operating, refrigerant is continuously circulated by a compressor
where it absorbs heat from the outdoor air which is passed
through a heat exchanger and transferring that heat to water
which is used in heating and hot water systems.
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The circuit consists of four main components/functions.
1. Evaporator Heat Exchanger - Refrigerant absorbs heat
energy from the outdoor ambient air.
2. Compressor – Refrigerant is compressed and circulated
around the closed loop circuit.
3. Condenser Heat Exchanger – Refrigerant transfers heat
energy to the heating or hot water systems.
4. Expansion Device – Refrigerant pressure and temperature
is reduced.
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