DOMUSA DUAL CLIMA 11, Инструкция по установке и эксплуатации

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DUAL CLIMA
20
9.5 Hydraulic installation
The hydraulic installation must be made by qualified personnel. The applicable installation
legislation must be complied with, and the following recommendations should also be taken into
account:
- It is advisable to use Ø28 mm pipes ( DN25 ) for the installation. The inside of the installation
piping should be thoroughly cleaned before switching on the heat pump.
- All water circuit piping MUST be insulated to prevent condensation during operation in
cooling mode and reduction of the cooling and heating capacity, as well as to prevent freezing
of outside pipes during winter. The minimum insulation thickness of the pipes should be 19
mm (0.039 W/mK), preferably comprising a closed cell insulation or a vapour barrier. In outdoor
areas exposed to the sun, the insulation must be protected from the effects of degradation.
- We recommend inserting cut-off valves between the installation piping and the heat pump to
simplify maintenance tasks.
- Leave a free space around the heat pump for carrying out any maintenance and repair
operations (see "Location" ).
- Air vent valves and suitable devices should be fitted for the correct removal of air from the
circuit during the filling stage.
- Install all the necessary safety elements (expansion vessel, safety valve, etc.) to comply with the
applicable regulations for the installation.
- A water filter must be installed in the water circuit of the heat pump, in order to avoid
obstructions or narrowing caused by dirt in the installation. The filter MUST be installed before
filling the installation with water and in the return branch of the machine, to avoid the entry of
dirty water into the heat exchanger (condenser). The type of filter installed must be adapted to
the particular characteristics of each installation (type and material of the water pipes, type of
water used, water volume of the installation, etc.). The water filter should be checked and
cleaned, if necessary, at least once a year. In new installations, however, it is advisable to check
it within the first few months of its commissioning.
- For the correct operation of the heat pump, a minimum water volume must be ensured in the
installation, as well as a minimum flow in the hydraulic circuit of the machine. If the minimum
circulation flow is not reached by the heat pump, it will be blocked, and an alarm code will be
displayed on the main board display. According to the
DUAL CLIMA model installed, these
values will be:
DUAL CLIMA 8 DUAL CLIMA 11 DUAL CLIMA 16
Minimum volume (l) 40 60 80
Minimum flow rate (l/min)
10 15 20
If the water volume of the installation is lower than this value, install an inertia tank in the
heating/cooling circuit. To avoid condensation and premature deterioration of the inertia tank,
make sure that all hydraulic fittings and connections are properly insulated, especially when
the tank is to be used in Cooling mode.