Connecting The Condensate Pipe; Electrical Connection; Air Duct Connection (Optional; Commissioning - Dimplex DHW 300+ Installation And Operating Instructions Manual

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).

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. 3.4 on pag. 4. 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.
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6

Commissioning

6.1 Domestic hot water system

ATTENTION!
The domestic hot water heat pump must only be operated when filled with
water.
Domestic hot water system requirements
The following materials can be used in the consumer's domestic
hot water system:
 Copper
Stainless steel

 Brass
 Plastic
Depending on the materials used in the domestic hot water sys-
tem (customer installation), material incompatibility may lead to
corrosion damage. This especially applies to zinc-plated materi-
als and materials containing aluminium. If there is a risk of water
contamination during operation, it may be necessary to install a
filter.
Commissioning the domestic hot water system
 All installations for the water circuit and air circuit, as well as
all electrical installations, must have been carried out cor-
rectly and fully completed.
 Fill the domestic hot water circuit via an external connection.
 Purge the domestic hot water circuit (open domestic hot
water taps at the highest extraction points until there are no
more traces of air).
 Check the entire domestic hot water system for leaks.
 Establish the power supply.
 Switch on the heat pump.
 The desired domestic hot water temperature (e.g. 45 °C) is
shown on the keypad (Cap. 7 on pag. 7). A corresponding
heat-up time is necessary before the selected temperature
level is reached.
451905.66.01 · FD 9505
DHW 300 - DHW 300+
EN-6