Connecting The Electrical Wiring - Panasonic Aquarea B1 Planning And Installation Manual

Installation
6.8

Connecting the electrical wiring

WARNING
Danger to life from electric shock!
The devices are operated with 230-V or 400-V alternating current. Improper installation
can present a danger to life from electric shock as well as a danger of fire occurring due to
superheat.
► Electrical installation work must be undertaken by a trained electrician.
► Ensure that you have disconnected the electricity supply before you carry out in-
stallation work. Secure the electricity supply against being switched on again
unintentionally.
CAUTION
Danger of damage due to unprofessional installation
► When making electrical wiring connections, respect the relevant requirements for
cable type, cable cross section and recommended fuse
→ 4.6.3.3 Technical data (compact systems), p.
systems), p. 16,
mum required contact distance and the maximum permissible cable length (if indicat-
ed) as well as the connecting conditions for the individual devices
p. 105).
► Pay attention to the correct polarity while connecting the cabling. Connecting the ca-
bling with incorrect polarity can cause electrical shocks or fire.
► Guide the cable through cable grommets into the device, so that the cable will not be
damaged through sharp edges.
► Make sure that the cables do not come into contact with hot objects such as the water
pipelines, so that the insulation is not damaged.
!
IMPORTANT
When connecting electrical wiring, also respect the following specifications.
172
Aquarea air-to-water heat pumps - Planning and installation manual - 01/2018
(→ 4 Technical data (split
50), the mini-
(→ 5.4 Electricals,
Requirements for correctly configured cable connections
1. Note the following changes in the insulation:
a. The length of the insulation must be 10 mm ±1 mm. See that no litz wire is free, all litzes
are clamped.
b. See that the insulated part of the conductor is fully introduced into the terminal. Neither
should the insulation be entered in the terminal, nor should the insulated part of the con-
ductor project out from the terminal.
c. The distance between the cables must be a minimum of 5 mm.
a
correct wrong
2. When tightening the terminal screw connections, ensure the following tightening torques:
Terminal screw connection
M4
M5
3. Note that, for safety reasons, the ground conductor must be longer than the other cables
in case the cable slips out from the cable holder.
4. Use separate cable grommets for power cords on the one hand and accessory cables on
the other, to avoid disturbances in control signals.
5. Fasten the power cord by using cable holders/ cable reliefs.
6. Bundle accessory cables together using cable binders.
Aquarea air-to-water heat pumps - Planning and installation manual - 01/2018
Installation
b
correct wrong wrong
Tightening torque (Ncm)
157 – 196
196 – 245
c
correct
min. 5 mm
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