Cable Preparations; Installer Wiring Connections - Worcester Greenstar 4000 Installation And Maintenance Instructions Manual

Installation
5.5.1

Cable preparations

NOTICE
Damage to control unit!
Small pieces of wire can cause shorts and damage to electronics.
▶ When stripping wires always ensure copper strands do not fall into
the control box.
Power supply (power cables), example  figure 53
▶ Ensure the conductors (C) can reach the appropriate terminal
connection and that the protective (earth) conductor is longer than
the other wires.
– Power cables connected to the appliance my have different
conductor lengths depending on the termination point.
230V
6-8mm
6-8mm
N
L
> C
Fig. 53 Power supply (power cables) preparation
Low voltage (signal cables), example  figure 54
0-30V
6-8mm
26-30mm
Fig. 54 Low voltage (signal cables) preparation
40
C
5.5.2

Installer wiring connections

Access to electrical connections
▶ Release side catches and lower control panel into the service
position.
▶ Loosen the retaining screw [1].
▶ Push in the tabs and open the cover.
Fig. 55 Opening the cover
Stepped cable grommets
▶ For splash-water protection (IP): cut the stepped cable grommets to
match the diameter of the cable.
1
Fig. 56 Adapting the grommets to the cable diameter
[1] Low voltage (signal cables) grommet
[2] Power supply (power cables) grommet with strain relief
[1] Low voltage (signal cables)
▶ Guide the cable through the grommet.
▶ Connect the cable to the terminal strip for external accessories.
[2] Power supply (power cables)
▶ Guide the cable through the grommet.
▶ Connect the cable to the terminal strip for external accessories and
the protective conductor (PE) to the \ rail.
▶ Secure the cable on the strain relief.
Greenstar 4000 – 6 720 891 161 (2020/09)
1
0010035140-001
2
0010036149-001