WORK PRINCIBLE
Refrigerant vapours are compressed in the compressor (5)
from low pressure (6 bar) to high pressure (18 bar), and sent
into the D-tube condenser (7), coiled round the hot-water tank,
which is colder than the refrigerant vapours. A condensation of
the refrigerant vapours takes place and the water in the tank
is heated. The refrigerant is now a liquid and passes through
the dry filter (8), which will absorb and detain residual moisture
from the refrigerant, if any. In the heat exchanger (4) a further
transfer of heat is possible. The purpose of the expansion
valve (3) is to regulate the supply of liquid to the evaporator
(2). A high-pressure sensitive switch (6) secures the cooling
circuit against an inadmissible overpressure.
COOLING CIRCUIT
1
2
3
4
5
6
7
8
9
The air can be taken from the room in which the heat pump is placed, from another room or from outside. In the latter cases the heat
pump can be equipped with duct connections, both at the air inlet and at the air outlet. The air inlet and the air outlet are located at the
top of the heat pump. The ducts should be used with thermal and acoustic insulation. The duct connections are ø160 mm. To ensure
sufficient air flow the following rules should be observed: The total duct length (suction and pressure ducts) should not exceed 7 m with
160 mm ducts, minimum airflow 100 m3/h. The number of bows should be reduced to 2. When using the air from outside, please respect
the HP operating temperature range.
For the sake of later disassembly of the duct connections for servicing or cleaning, should the duct system be connected to the piping
which can either be pushed over each other, removed or be flexible to allow adequate access options.
1:
Ambient air inlet
2:
Ambient air outlet
3:
Outside air - inlet
4:
Outside air - outlet
5:
Ambient air from another room - inlet
Heat pump models for certain air connections.
A:
If air inlet and outlet is within the same room and
ambient air temperature doesn’t go below +5°C you can
use the VT100C and VT180C as an +5°C unit else use an -10°C unit.
(Air / fan defrosting mode only) or
(Solenoid valve, hot gas defrosting mode)
(
Note!
) By air recirculation the room must be at least 20m3
DUCT CONNECTION
ENGLISH
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