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5 Fix the front panel of the heat pump module.
1
1
Installation manual
10
7.
7.1. Water piping work
Water quality
Before continuing the installation of the unit, check the following
points
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2x
Checking the water circuit
The units are equipped with a water inlet and water outlet for
connection to a water circuit. This circuit must be provided by a
licensed technician and must comply with all relevant European and
national regulations.
Before continuing the installation of the unit, check the following
points:
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P
IPING CONNECTION WORK
Domestic hot water quality must be according to EU directive
98/83 EC. Specifically take care that:
-
Chloride content
maximum 250 mg/l
-
Sulphate content
maximum 250 mg/l
-
Combination of both
maximum 300 mg/l
The unit must not be used with water from a private supply.
In known hard water regions, precautions should be taken to
prevent lime scale formation in hot water.
For safety reasons, it is not allowed to add any kind of glycol to
the water circuit.
To avoid stagnation of water, it is important that the storage
capacity of the domestic hot water tank meets the daily
consumption of domestic hot water.
In cases where during longer periods of time there is no
consumption of hot water, the equipment must be flushed with
fresh water before usage.
The disinfection function provided on the equipment is specified
in the operation manual of the unit.
The maximum allowed unit water pressure is 10 bar.
The maximum water temperature at the unit outlet is 75°C.
Take care that the components installed in the field piping can
withstand this water temperature.
DANGER
The maximum water temperature to the unit must be
limited to 55°C.
Drain taps must be provided at all low points of the system to
permit complete drainage of the circuit during maintenance.
One drain valve in the indoor unit is provided to drain the water
from the indoor unit water system. Only perform this draining
when all the water of the domestic hot water tank is already
drained.
Take care that the components installed in the field piping can
withstand the water pressure and temperature.
Always use materials which are compatible with the water used
in the domestic water circuit. In the unit water circuit copper,
stainless steel and brass is used.
WARNING
Never use Zn coated parts in the water circuit. Excessive
corrosion of these parts may occur as copper piping is
used in the unitís internal water circuit.
EKHVWQ002AAV3 + EKHHS200+260AA1V3
Domestic hot water heat pump
4PW65342-1A – 10.2010
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