emmeti 07239715, Инструкция по установке и эксплуатации

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35
1. TITOLO 2. USE OF HEAT PUMP
GB GB
CONNECTION TO WATER SUPPLY MAINS
Water inlet and outlet on the heat pump are marked
with colours. Cold water inlet is marked with blue, and
warm water outlet is marked with red. If the pressure
in the supply mains is lower than 0.6 MPa (6 bar). A
relief valve needs to be installed so as to provide that
the pressure at the inlet to the hot water tank does not
exceed the value..
Installing a safety valve is mandatory in order to as-
sure safe operation. The valve prevents an increase of
the pressure in the boiler by any more than 0.7 MPa
(7 bar) above the rated pressure. The outflow nozzle
on the safety valve must have an outlet into the atmo-
sphere. To assure correct operation of the safety valve,
the valve must be regularly checked.
When checking the valve, push the lever or unscrew
the nut of the valve (depending on the type of the val-
ve) and open the drain from the safety valve. Water
must flow from the valve nozzle, showing that the
valve operation is faultless. The outlet pipe, which
is mounted under the safety valve, must be directed
downwards, in a place with a temperature above fre-
ezing.
During heating, the pressure in the tank increases for
this de must be installed on the input dell'acuqa an
expansion vessel.
The volume of the expansion tank must be about 3% of
the volume of the hot water tank.
3 7 6 5 4
2
1
8 7
Leggend:
1 - Mixer tap (pressure)
2 - Drain cock
3 - Expansion tank
4 - Safety valve
5 - Check valve
6 - Pressure reduction valve
7 - Closing valve
8 - Water Filter
H - Cold water
T - Hot water
Fig. 7: Closed (pressure) system