DOMUSA TEKNIK DUAL CLIMA R, Инструкция по установке и эксплуатации, Страница: 22 / 84

EN
22 DUAL CLIMA R
6.5 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 recommended to use a suitable pipe to the installation so that the minimum flow in the
hydraulic circuit is reached. Before the connection of the heat pump, a thorough internal
cleaning of the pipes of the installation must be carried out.
• 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 could have functioning
problems, it could be blocked and different alarm codes would be displayed on the main
board display. According to the
DUAL CLIMA R model installed, these values will be:
DUAL CLIMA R 6R 9R 12R 16R 19R 16RT 19RT
Minimum
volume (l)
35 45 60 80 95 80 95
Minimum flow
rate (l/min)
14 20 30 38 42 38 42
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.
•
In multi-zone installations managed by thermostatic or similar valves, some method must be
provided to maintain the minimum flow rates indicated above, even when all zones are closed
(bypass valve, etc.).