12
Installation and operating manual “1350-EN”
Heat pump, Split, single service
1
2
3
4
5
6 7
8
9
10
11
12
13
14
15
16
Front view
Side view
Identification plate
Figure 8 - Hydraulic module components
Legend
1 - Electric box
2 - Regulator / User interface
3 - Start/stop switch
4 - Heating circulation pump
5 - Initial heating
6 - Gas refrigeration connection
7 - Fluid refrigeration connection
8 - Heating return
9 - Drain valve
10 - Safety valve
11 - Safety thermostat ()
12 - Manometer
13 - Manual drainer
14 - Expansion vessel
15 - Condenser
16 - Electric back-ups
1.6
Operating principle
The heat pump transmits the energy contained in the
surrounding air into the dwelling to be heated.
The heat pump consists of four main elements, in
which a refrigerant fluid (R410A) circulates.
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In the evaporator (rep. 13, fig 7, page 11): The
energy is taken from the surrounding air and is
transmitted to the refrigerant.
-
Because it has a low boiling point, it changes from
the liquid state to the vapour state, even in cold
weather (down to -15 °C outside temperature).
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In the compressor (rep. 10, fig 7, page 11): The
vaporised refrigerant brought to high pressure and
takes on more calories.
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In the condenser (rep. 15, fig 8, page 12): The
energy in the refrigerant is transmitted to the
heating circuit. The refrigerant returns to liquid
state.
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In the expansion valve (rep. 9, fig 7, page 11): The
liquefied refrigerant is brought back to low pressure
and returns to its initial temperature and pressure.
The heat pump is equipped with a controller, which
controls the internal temperature based on the
outside temperature measurement and governed by
the temperature control.
The room thermostat (optional) provides a corrective
action for the temperature control
The hydraulic module is equipped with an electric
back-ups system, which is triggered to provide
additional heat during the coldest periods.
Regulation functions
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The heating circuit’s initial temperature is controlled
by the temperature control.
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The power of the outside unit is modulated
according to initial heating temperature via the
“inverter” compressor.
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Control of the electric back-up heating.
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The daily timer program enables you to define the
periods for comfortable or reduced ambient
temperature.
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Summer/winter mode switchover is automatic.
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Control of the supplementary boiler* (the electric
back-ups are deactivated).
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The room thermostat* (optional) provides a
corrective action for the temperature control
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Control of a second heating circuit*.
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Domestic hot water: Heating time programme,
control of the operation of the DHW circulation
pump.
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Control of swimming pool heating*.
Protection functions
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Anti-legionella cycle for domestic hot water.
* If the heat pump is equipped with optional
equipment and the associated kits.
