Gorenje TC 120-150 SPLIT, Instructions For Use Manual

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EN
23
Tools necessary for the installation
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Level indicator (hand level)
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Wrench

Electric drill with a hollow bit (ø65 mm)
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Flaring tools

Torque wrenches: 15 Nm 1/4" (6.35 mm), 25 Nm 3/8" (9.52 mm)
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Spanner (half union)

Hexagonal wrench of suitable dimensions

Gas-leak detector, Vacuum pump, Gauge manifold
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Thermometer, Multimeter, Pipe cutter, Measuring tape
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User’s manual
CONNECTION TO WATER SUPPLY MAINS
Water inlet and outlet on the heat pump pipes are colour-coded. Cold water inlet is marked with blue, and warm
water outlet is marked with red. The indoor unit is designed for connection to indoor water supply mains without
using the relief valve if the pressure in the supply mains is lower than 0.6 or 0.9 MPa (6 or 9 bar respectively, see
nameplate). If the pressure is higher, a relief valve needs to be installed to make sure the pressure at the inlet to
the boiler does not exceed the nominal pressure.
Installing a safety valve is mandatory in order to assure safe operation. The valve prevents an increase of the
pressure in the boiler by more than 0.1 MPa (1 bar) above the rated pressure. The outflow nozzle on the safety
valve must have an outlet into the atmosphere. To assure correct operation of the safety valve, the valve must be
regularly checked to remove limescale and check if the safety valve is blocked.
When checking the valve, push the lever or unscrew the nut of the valve (depending on the type of the valve) and
open the drain from the safety valve. Water must flow from the valve nozzle, showing that the valve operation is
faultless.
During the heating of water, the water pressure in the boiler is increased up to the level pre-set in the safety valve.
Since the system prevents backflow of water into the water supply mains, water may drip from the outlet opening
on the safety valve. The dripping water may be drained via a trap into the drains; the trap is mounted under the
safety valve. The outlet pipe, which is mounted under the safety valve, must be directed downwards, in a place
with a temperature above freezing.
If the installation does not allow draining of the water from the safety valve into the drains, dripping can be
avoided by installing an expansion vessel onto the heat pump inlet pipe. The volume of the expansion vessel
must be approximately 3% of the hot water tank volume.
Fig. 4: Closed (pressure) system
Legend:
1 - Pressure mixer taps
2 - Expansion tank
3 - Safety valve
a - Test valve
b - Non-return valve
4 - Funnel with outlet connection
5 - Checking fitting
6 - Pressure reduction valve
7 - Closing valve
H - Cold water
T - Hot water