Siting of the outdoor unit

The outdoor unit can be either wall mounted or floor standing. If floor standing, it should be placed on a flat, solid base e.g. concrete slabs or a suitable stand. A minimum clearance of 200mm is required around the unit to ensure that there is adequate airflow (ideally 2 million litres per hour) for the heat pump to operate at maximum performance. The outdoor connecting pipes should be suitably insulated with Class ‘O’ insulation to prevent freezing.

The heat pump can produce up to 20 litres of non-acidic condensation per day, depending on external temperatures, and this should be diverted to a mains drain or a soak away. In order to prevent freezing the condensate pipe must be insulated with Class ‘O’ insulation and the drainage pipe must slope towards a drain.

General siting advice

• If floor standing, the unit should be on a stable base or stand. Rubber matting can be used directly under the heat pump to act as a sound proofing material

• Provide sufficient space around the unit for effective operation and ease of access for maintenance and cleaning

• The unit should be sited where it will be sheltered from strong winds and rain. Also avoid locations where muddy water might be a problem (alongside a road, for example) or where it could be tampered with.

• Keep the air outlet free of any obstacles, or this could affect the performance and increase noise levels

• Avoid placing the unit where hot airflow or noise could be nuisance to the property owner or neighbours

• The condensate water pipe must always be installed and suitably insulated

Installation clearances

Provide as much installation space as possible for efficient air movement. The following diagram shows the minimum requirements.