Figure 7: Top view of two concrete mounting blocks that allow the condensate to drain away via a gravel soak away.
Ventilation
The installation site must be an open location clear of any
obstacles which may cause a short circuiting of the
discharged air or increased resistance due to blocking of
the inlet or outlet. This includes walls and fences as well
as locations prone to blocking debris such as leaves or
snow.
Avoid installing the heat pump in a location where suction
side of the fan may be exposed directly to wind. If the
location is in open ground, the heat pump should be set
up so that the air outlet direction of the fan is
perpendicular to the main wind direction to allow
unrestricted defrosting of the evaporator.
Figure 8: Minimum distances to objects to ensure adequate
ventilation
Minimum maintenance clearances
It must be possible to carry out maintenance work without
hindrance the displayed in Figure 9 should be observed.
For example if the unit is installed on a balcony there must
be a space measuring 1000mm in front of the unit of
maintenance.
Figure 9: Minimum clearances for maintenance (not
including clearance for air circulation)
Sound insulation measures
The installation may also have to comply with the MCS
020 standard as detailed in the section on the next page.
Furthermore, the heat pumps should be installed in a
location considering the following:
the occupant‟s enjoyment of the garden and
outside spaces.
any windows that open close to the heat pump.
The effect on neighbouring properties.
The lowest noise emissions are achieved if an area of 3-
5m surrounding the heat pump does not have any hard
surfaces that can reverberate the sound. Additionally, the
foundation can be covered up to the level of sledge on the
heat pump with sound-absorbing material such as bark,
plants or grass. These must not affect the air flow or and
care must be taken so they don‟t get sucked into the fan.
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