Dimplex WI 14CS, Руководство по эксплуатации

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7
COMMISSIONING
CARE/CLEANING
7
8
CAUTION!
COMMISSIONING
7.1 General
To ensure proper commissioning it should be
carried out by an after-sales service authorized by
the manufacturer. Only then can an extended
warranty period of 3 years in total be granted (cf.
Warranty service).
7.2 Preparation
Prior to commissioning, the following items need to
be checked:
- All connections of the heat pump must have been
made as described in Chapter 6.
- The heat source system and the heating circuit
must have been filled and tested.
- In the well and heating circuits all valves that
could impair the proper heating water flow
must be open.
- The settings of the heat pump controller must be
adapted to the heating installation in accordance
with the instructions contained in the controller's
operating manual.
7.3 Procedure
The start-up of the heat pump is effected via the
heat pump controller.
Commissioning of the heat pump
must be performed in accordance with the
mounting and operating manual of the heat
pump controller.
Where an overflow valve is fitted to assure the
minimum heating water flow rate, the valve must be
set in accordance with the requirements of the heating
installation. An incorrect setting may result in various
error symptoms and an increased electric power
consumption. To correctly set the overflow valve, the
following procedure is re-commended:
a) Open all heating circuits and close the overflow
valve. Determine the resulting temperature
difference between supply and return flow.
b) Close all of the heating circuits that may also be
closed during operation (depending on the type
of heat pump usage) so that the most unfa-
vourable operating state - with respect to the water
flow rate - is achieved.
Any malfunctions occurring during operation are
displayed on the heat pump controller and can be
corrected as described in the operating manual of
the heat pump controller.
CARE/CLEANING
8.1 Care
The heat pump is maintenance-free. To prevent
malfunctions due to sediments in the heat ex-
changers, care must be taken that no impurities can
enter the heat source system and heating installa-
tion. In the event that operating malfunctions due to
contamination occur nevertheless, the system
should be cleaned as described below.
8.2 Cleaning of Heating Side
The ingress of oxygen into the heating water circuit
may result in the formation of oxidation products (rust).
It is therefore important - in particular with respect to
the piping of underfloor heating systems - that the
installation is executed in a diffusion-proof manner.
Also residues of lubricating and sealing agents may
contaminate the heating water.
In the case of severe contamination leading to a
reduction of the performance of the condenser in the
heat pump, the system must be cleaned by a heating
technician.
According to current knowledge, we recommend
cleaning with a 5% phosphoric acid solution or, in
the case that cleaning needs to be performed more
frequently, with a 5% formic acid solution.
In either case, the cleaning fluid should be at room
temperature. It is recommended that the heat
exchanger be cleaned in the direction opposite to the
normal flow direction.
To prevent acidic cleaning agents from entering the
circuit of the heating installation we recommend that
the flushing device be fitted directly to the supply and
return lines of the condenser. To prevent any damage
caused by cleaning agent residues that may be
present in the system it is important that the system
be thoroughly flushed using appropriate neutralising
agents.
The acids must be used with great care, all relevant
regulations of the employers' liability insurance
associations must be adhered to.
If in doubt, contact the manufacturer of the chemicals!