Start-Up; General; Preparation; Procedure - Dimplex 355 980 Montage- Und Gebrauchsanweisung

7

Start-up

7.1 General

To ensure that start-up is performed correctly, it should only be
carried out by an after-sales service technician authorised by the
manufacturer. This may be a condition for extending the guaran-
tee (see Warranty Service).

7.2 Preparation

The following items need to be checked prior to start-up:
All connections of the hydraulic tower must be established
as described in chapter 6.
All valves that could impair the proper flow of the heating
water in the heating circuit must be open.
The settings of the heat pump controller must be adapted to
the heating system in accordance with the controller's oper-
ating instructions.

7.3 Procedure

The hydraulic tower is started up via the heat pump controller.
Adjustments should be made in compliance with the instructions.
The operating overpressures indicated on the type plate must not
be exceeded.
Any faults occurring during operation are also displayed on the
heat pump controller and can be corrected as described in the
operating instructions of the heat pump controller.
8

Maintenance / Cleaning

8.1 Cleaning

To protect the paintwork, avoid leaning anything against the de-
vice or putting objects on the device. External heat pump parts
can be wiped with a damp cloth and domestic cleaner.
ATTENTION!
Never use cleaning agents containing sand, soda, acid or chloride as
these can damage the surfaces.

8.2 Cleaning the Heating System

The ingress of oxygen into the heating water circuit may result in
the formation of oxidation products (rust), particularly if steel
components are used. These products enter the heating system
via the valves, the circulating pumps and/or plastic pipes. It is
therefore essential - in particular with respect to the piping of un-
derfloor heating systems - that only diffusion-proof materials are
used.
Residue from lubricants and sealants may also contaminate the
heating water.
In the case of severe contamination leading to a reduction in the
performance of the liquefier in the heat pump, the system must
be cleaned by a heating technician.
According to current information, we recommend using a 5%
phosphoric acid solution for cleaning purposes. However, if
cleaning needs to be performed more frequently, a 5% formic
acid solution should be used.
In either case, the cleaning fluid should be at room temperature.
We recommend flushing the heat exchanger in the direction op-
posite to the normal flow direction.
To prevent acidic cleaning agents from entering the heating sys-
tem circuit, we recommend connecting the flushing device di-
rectly to the flow and return flow of the liquefier of the heat pump.
It is important that the system be thoroughly flushed using appro-
priate neutralising agents to prevent damage caused by cleaning
agent residue remaining in the system.
Acids must be used with great care and all relevant regulations of
the employers' liability insurance associations must be adhered
to.
If in doubt, contact the manufacturer of the chemicals!
9

Faults / troubleshooting

This hydraulic power is a quality product and designed for trou-
ble-free and maintenance-free operation. In the event that a fault
should occur, it will be indicated on the heat pump manager dis-
play. Consult the Faults and Troubleshooting page in the operat-
ing instructions of the heat pump manager. If you cannot correct
the fault yourself, please contact your after-sales service techni-
cian.
ATTENTION!
Any work on the system may only be performed by authorised and
qualified after-sales service technicians.
10 Decommissioning /
disposal
Before removing the hydraulic power, disconnect it from the
power source and close all valves. Observe all environmentally-
relevant requirements regarding the recovery, recycling and dis-
posal of materials and components in accordance with all appli-
cable standards.
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EN-5