Installing The Outdoor Unit; Connection On The Heating Side - Dimplex LIA 7IM Instructions D'installation Et D'utilisation

6.3
6.2.4 Installing the drain hose
 Use a commercially available drain hose with an inside
diameter of 15 mm.
 This hose must always be angled downwards and installed
in a frost-free environment.
 Do not insert this hose into a sewage hose or cleaning hose
that may generate ammonia gas, sulphuric gas etc.
 If necessary, use hose clips to fasten the hose tighter to the
drain hose connection, thus preventing leaks.
 Water may drip from the drain hose, so it is important to
ensure that the hose outlet is not sealed or blocked.
Fig. 6.5:LIA 7-16IM

6.3 Connection on the heating side

Before connecting the heating water system to the heat pump,
the heating system must be flushed to remove any impurities,
residue from sealants, etc. Any accumulation of deposits in the
liquefier may cause the heat pump to completely break down.
Once the heating system has been installed, it must be filled, de-
aerated and pressure-tested.
The following points must be observed when filling the system:
 Untreated filling water and make-up water must be of
drinking water quality
(colourless, clear, free of sediments)
 The filling water and make-up water must be pre-filtered
(max. pore size 5 µm).
Scale formation in domestic hot water heating systems cannot be
completely avoided, but in systems with flow temperatures below
60 °C, the problem can be disregarded.
The following reference values should therefore be adhered to
regarding the filling water and make-up water according to VDI
2035, sheet 1:
Total alkaline earths
Total heat
in mol/m³ and/or
output in [kW]
mmol/l

Up to 200
Minimum heating water flow
The minimum heating water flow through the heat pump must be
assured in all operating states of the heating system. This can be
achieved using a heating circuit which is continuously open, e.g.
in a reference room which is regulated using a room temperature
controller (available as a special accessory).
EN-8
All manuals and user guides at all-guides.com
Total
hardness in °dH

2.0 11.2
The use of an overflow valve is only recommended for panel
heating and a maximum heating water flow of 1.3 m³/h.

6.4 Installing the outdoor unit

 Once the installation site has been chosen, the device must
be installed in accordance with the "Installing the indoor and
outdoor units" figure.
1) Position the device on a concrete foundation or a stable
base frame so that it is level, and screw it in place (
mm).
2) If the device is being mounted on a roof, environmental
influences such as strong winds must be taken into account.
Fasten the device securely.
3) In snowy areas, the foundation must be suitably positioned
and of a sufficient height to guarantee a free air intake.
6.4.1 Connecting the pipes
Model
LIA 7IM 5/8" [65 N•m]
LIA 9IM 5/8" [65 N•m]
LIA 12IM 5/8" [65 N•m]
LIA 14IM 5/8" [65 N•m]
LIA 16IM 5/8" [65 N•m]
6.4.2 Connecting the outdoor unit
Determine the necessary pipe lengths and use a pipe cutter to
cut the pipes to size. Remove devices from the cut edges. Do not
forget to push the union nut on prior to flanging.
Align the pipes and valves in the centre and use a torque wrench
to tighten the union nut, observing the torque values specified in
the table.
The on-site pipes can be routed in all four directions.
 Drill holes in the pipe covers so that the pipes can be passed
through.
 Ensure that pipe covers are installed in order to prevent rain
entering the outdoor unit.
Ø
10
Pipe size (torque)
Gas Liquid
1/4" [18 N•m]
1/4" [18 N•m]
3/8" [42 N•m]
3/8" [42 N•m]
3/8" [42 N•m]