Dimplex A16M Manual de Instalação descarregar pdf (Página 10)

3.4 Heat Pump Sizing

 Ensure that the correct size heat pump has been

selected in accordance with the latest version of

MIS3005 (for UK installation) and with the Dimplex

Heat Pump Planning Manual.

 If a non A-Class heat pump cylinder is being used,

ensure that it has been accurately sized with the

appropriate coil surface area of the cylinder to

match the heat pump’s output and flow rate

requirements, and that all necessary hydraulic

connections have been considered in connecting it

to the heat pump system.

 Ensure that suitable heat emitters have been sized

in accordance with the Heat Emitter Guide (for UK

installation) and selected ensuring a low flow

temperature design. To maximise system

efficiency it is important to design the system with

the lowest flow temperature possible.

3.5 Site Selection

3.5.1 Location of Heat Pump

 The heat pump must be installed outdoors with

adequate clearances for ventilation and

maintenance. It is recommended that the heat

pump is installed along the property wall, as

shown in figure 4.

 There must be a minimum distance of 1000mm in

front of the fan to prevent air re-circulation.

 Positioning the heat pump in a confined space,

frost hollow or well will result in reduced heat

pump efficiency, as the cold air which is expelled

by the fan cannot disperse and may be drawn back

into the system. This means that the heat pump

may be operating using a lower inlet temperature

than what is actually available from the

thermostat, and will therefore run less efficiently.

 The fan should preferably not face prevailing winds

to ensure correct air flow through the evaporator.

 Although the heat pump is within noise and

vibration regulations outlined in MCS007, it is

recommended to avoid positioning it close to

bedroom windows, as the fan and compressor may

be operational at night.

3.5.2 Heat Pump Placement and Fixing

 Approximately 2 litres of condensate water are

drained from the system every time a defrost cycle

occurs (approximately once every hour in colder

weather). Therefore, it is essential that the

condensate pipe is fed into a drain or soak away to

allow for safe disposal of the excess water, away

from footpaths or patios.

 The condensate drain pipe is coiled up inside

the heat pump for protection during

transportation. In order to access this for

installation, the panels will need to be removed,

as shown in figure 9.

 The length of the condensate pipe should be

kept to a minimum. This prevents parts of the

pipe from being exposed to the elements, which

could contribute to issues with freezing.

 The removal of condensate must be secured

and the condensate pipe must be kept free

from debris and frost. Freezing of this pipe due

to incorrect installation can result in irreparable

damage and void warranty.

 The condensate pipe should not run into sewer

pipe unless a suitable trap is installed, as fumes

may travel into the heat pump and cause

corrosion to the evaporator coil.

 The heat pump must be fixed onto a level,

stable base that is capable of withstanding the

unit’s weight of 130kg, with a minimum of

50mm clearance around all sides of the heat

pump. It can be secured on the inside of the

heat pump with M10 anchor bolts, by removing

the outer panels and using the fixing holes

shown in figures 5.

 The positions of the fixing holes can be located

by placing the heat pump on the plinth with the

condensate pipe aligned, and marking the

holes. Move or slide the heat pump to drill

holes.

 Ideally the heat pump should be located close

to the property. Positioning of the heat pump at

a distance from the property will result in the

need for extra insulated pipe, which will lead to

extra cost, and result in additional heat losses.

Figure 4: Required free space around heat pump for

ventilation and maintenance

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