2. Lead the main electrical cables through the holes (1).
3. Connect the electrical cables.
3.1. Make sure that the phases are connected in a right-rotating
field in the phase order: L1, L2, L3.
3.2. In case of an extension of the sensor cable, it is necessary to
use a shielded cable with a cross section of at least 0.75 mm
2
.
3.3. Do not install the sensor cable together with the mains power
cables.
4. Connect the controller cable to the device.
4.1. Use one, or if necessary several, separate external main
switches upstream to the terminal box to be able to separate
the device completely from the network.
5. If applicable, connect the heat tracing cables of the condensate
drainage.
6. Insulate the cables.
See also
Electrical connections, page 13
6.4
Filling the system
6.4.1
Filling the system
Caution
The heating circuit must have a sufficient water flow to operate
the heat pump. Insufficient or no hot water flow can lead to high
pressure failures in heating mode and low pressure failures in
defrost mode. If this happens, the system will be switched off by
either the high pressure limiter or the low pressure limiter.
Wrong settings on the controller can have a similar effect.
When filling the hydraulic system, please make sure the water
temperature in the system is above 10°C, and the ambient
temperature is above 0°C. The machine will not start when the
water in the system is under 10°C to protect itself.
Important
Failures in the heat pump are mostly caused by hydraulic
operation conditions and lack of water flow over the condenser. If
a malfunction is displayed, it is often to protect the heat pump. It is
generally not a sign of a defective heat pump.
Fig.22
Entry electrical cables 44
AD-3001695-01
1
Fig.23
Entry electrical cables 88
AD-3001697-01
1
Fig.24
Entry electrical cables 168
AD-3002171-01
1
6 Installation
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