Dimplex DHW 300D+ Instructions D'installation Et D'utilisation page 27

5 Assembly
5.1 Connecting the water pipes
The water connections (see scaled diagram (Cap. 1 on pag. II))
are located at the rear of the unit.
NOTE
Circulation pipe
For energy efficiency reasons, a circulation pipe should not be used if
this can be avoided. If a circulation pipe is installed in the domestic hot
water distribution system, a valve or a similar device must be provided as
shut-off facility to avoid unnecessary energy losses. Circulation is
enabled according to use (time or requirement control).
The nominal pipe widths for the on-site sanitary installation must
be determined by taking into account the available water pres-
sure and any pressure drops expected to occur in the pipework.
Technical regulations for domestic water installation are to be ob-
served. The nominal pipe widths for the on-site sanitary installa-
tion must be determined taking into account the building-specific
requirements and the valid directives and regulations. Any nec-
essary safety devices, such as pressure reducing valves, must
be installed according to the specific requirements.
Both rigid and flexible water pipes may be used. Observe the cor-
rosion behaviour of the pipework materials used in order to avoid
corrosion damage (see section Commissioning).
NOTE
Domestic hot water, cold water and circulation connections:
These pipe nipples contain plastic inserts, the purpose of which is to
protect against corrosion (in particular to the pipe nipple flange
surfaces). These plastic inserts remain in their positions after installation.
ATTENTION!
When installing the on-site pipework, ensure that the pipes are not
contaminated (flush pipes before connecting the domestic hot water heat
pump if necessary).
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5.2 Connecting the condensate
pipe
The condensate hose is routed through the cladding at the rear
of the device. It should be routed in such a way that the conden-
sate produced (during heat pump operation) can flow away
freely.
There is a pressureless seal valve at the end of the condensate
hose, which must be relocated accordingly if the condensate
hose is shortened (the valve can be easily removed and re-in-
serted). The condensate should be drained into a siphon (also
refer to the maintenance information in section 8.1).
NOTE
The sealing lip valve must be used to prevent damage from condensate.
5.3 Electrical connection
The domestic hot water heat pump is wired ready for use; power
is supplied via the power supply, which is plugged into an
earthed wall socket (~230 V, 50 Hz). This socket must remain ac-
cessible after installation. In order to control external devices,
e.g. the 2nd heat generator, solar circulating pump or collector
temperature sensor, a separate cable must be connected to the
device via an available cable gland and strain relieved. Do this by
opening the device cover as described in Cap. 3.5 on pag. 6. The
relevant connection points of the components can be found in
the electrical circuit diagram Cap. 3 on pag. V and the electrical
documentation.
5.4 Air duct connection (optional)
The device is designed for connecting an EPP air duct (individual
components available as accessories DN 160 inside). The 90°
position of the two connecting stubs means that a wide range of
ducts are possible.
451905.66.02 · FD 9511
DHW 300D - DHW 300D+
EN-7