Applications

Installation types

Dimplex LI TER+ air source heat pumps are suitable for the following types of application:

Non domestic – for light commercial applications with low heating/cooling load demands (i.e. up to 16kW).

Multiple heat pumps can be installed in parallel if required.

Heating system types

Dimplex LI TER+ air source heat pumps are suitable for use with the following types of heating distribution system:

Underfloor heating – the ideal choice for use with a heat pump. The larger heating surface area available allows lower water temperatures to be used (i.e. 35ºC - 45ºC), helping to improve the efficiency of the heat pump system.

Radiators – The LI TER+ range has a maximum water output temperature of 55ºC, making it possible for use with radiators providing the radiators are correctly sized.

Boiler systems usually run at much higher water output temperatures (75ºC +), therefore for lower water temperatures produced by a heat pump, the size of each radiator has to be approximately doubled to enable the same level of heat output.

Domestic hot water

Stored hot water - when used with a correctly sized Dimplex hot water cylinder, the LI TER+ range can produced stored water temperatures of approximately 50ºC.

Where there is a requirement to store water at higher temperatures, this can be boosted with a supplementary electric heating element installed in the water cylinder and controlled by the heat pump WPM controller.

Cooling

It is possible to us Dimplex LI TER+ air source heat pumps in the following ways for cooling:

Silent cooling – using underfloor heating (or other surface heating systems) by passing cool water through them.

Large cooled surfaces reduce the room temperature by approximately 3-5ºC, without draughts or air movement.

Dynamic cooling – via fan convectors able to cool (or heat) the air in the room according to need.