Electrical connection
17
Compress Hybrid 7000i AW – 6721833053 (2020/09)
6.3 Connecting the power supply
A cable of the type H05V2V2 F, 3x1.5 mm
2
which is 2.5 m in length is
connected as standard to the mains power supply terminal (Fig. 26).
Alternatively an on-site connection can be established using a suitable
cable.
▶ Remove the cover (Chapter 5.3.1, page 9).
▶ Feed connecting lead through the cable feed [2] into the appliance.
▶ Establish a permanent connection to the mains power supply in
accordance with the locally applicable regulations.
▶ Connect the mains power supply via the mains power supply terminal
on the retaining plate (Fig. 26, [2]).
WARNING
Danger to life from electrical shock in the event of incorrectly
connected cables!
Ensure correct polarity of the N and L cables.
▶ Establish clamp connection correctly.
▶ Fully tighten clamp connection.
▶ Do not use an adapter plug (push fit connections).
▶ Make sure the potentiometer setting is correct for hybrid application
(P=3 and A=0) as shown in figure 26, [1]. If necessary, turn the
direction arrow to the corresponding position with a screwdriver.
Fig. 26 Connecting the power supply
[1] Encoders
[2] Mains power supply terminal
[3] External booster heater terminal (volt free)
6.4 CAN-BUS
NOTICE
The system will be damaged if the 12 V- and the CAN-BUS
connections are incorrectly connected!
The communication circuits are not designed for 12 V constant voltage.
▶ Check to ensure that the cables are connected to the contacts with
the corresponding markings on the modules.
Accessories such as power guards which are to be connected to the
CAN-BUS are connected to the installation module of the indoor unit
parallel to the CAN-BUS connection for the outdoor unit. Accessories can
also be connected in series with other units connected to the CAN-BUS.
The indoor and outdoor units are connected by a communication line,
the CAN-BUS.
A LIYCY cable (TP) 2 x 2 x 1.5 mm
2
(or equivalent) is a suitable for use as
an extension cable outside the appliance. Alternatively, twisted pair
cables approved for outdoor use with a minimum cross-section of
0.75 mm
2
can be used. In doing so, only earth the shielding on one side
(indoor unit) and to the casing.
The maximum permissible cable length is 30 m.
The connection is made with four wires, as the 12 V supply is also
connected. The 12 V and CAN-BUS connections are marked on the
modules.
The "Term" changeover switch identifies the start and end of CAN-BUS
loops. Ensure that the correct modules are terminated and that all other
modules are not terminated.
Fig. 27 Termination CAN-BUS
On CAN-BUS completed
Off CAN-BUS not completed
6.5 Connecting the outside temperature sensor
If the length of the temperature sensor cable outdoors is more than
15 m, use a screened cable. The screened cable must be earthed in the
indoor unit. The maximum length of screened cable is 50 m.
A temperature sensor cable that runs outdoors must satisfy the following
requirements:
• Cable diameter: 0.5 mm
2
• Resistance: max. 50 ohm / km
• Number of conductors: 2
• Maximum length: 50 m
▶ Connect outside temperature sensor to terminal
T1
(
Chapter
12.2
).
0
1
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9
A
B
C
D
E
F
0
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9
A
B
C
D
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F
P
A
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