8
5.2 Electrical
Connection
The HPCDW is pre-wired, ready for connection, the power is supplied via the mains cable connected to a socket
with earthing contact (GB: "Home Office socket") (~230 V, 50 or 60 Hz). This socket must be accessible also after
the installation has been completed.
6. Commissioning
6.1 Domestic Water Circuit
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Caution!
The HPCDW may only be operated with the unit filled with water!
6.1.1 Water circuit requirements
On the consumer side, the following materials may be incorporated into the water circuit:
Â
copper
Â
stainless
steel
Â
brass
Â
plastic
Depending on the materials used in the hot water circuit (installation to be provided by the customer), corrosion
damage may occur due to material incompatibilities. This must be taken into account, in particular where
galvanised materials and those containing aluminium are used. A filter may have to be provided if there is a danger
of the water being contaminated during operation.
6.1.2 Commissioning of the domestic water system
•
All installations at the water and air circuits as well as all electrical installations must have been properly
executed and completed.
•
Fill water circuit via external connection. The domestic water tank must be filled from below, i.e. via the
domestic water outlet tap (see Fig. 1 and hydraulic plumbing diagram in the appendix) ! (during operation, the
top-up water enters the domestic water tank from the top).
•
Bleed the domestic water circuit (open water taps at the topmost points of use until no more air escapes, or
open air bleed cocks in the water circuit – to be provided by the customer).
•
Perform a leak test of the entire domestic water circuit.
•
Connect the unit to the power supply.
•
Turn on the "heat pump" switch (Fig. 5).
•
The desired domestic water temperature is continuously adjustable (16° - 25 °C) by means of a temperature
selector dial (Fig. 5). An appropriate time period (cooling period) must be allowed for until the selected
temperature level is reached.
