9752 Installation Guide
3. Installation
497098 Issue 3
Page 19
Wiring the Control Unit
Cable Entries
The control unit case back provides several cable entries. It is designed to
stand away from the wall to leave space for the cables.
Mains Connection
Connect the control unit to a suitable supply using a double pole disconnect
device in accordance with EN60950-1:2001 Clause 3.4.3. Connect the supply
to the control unit using the 3-way terminal block located on the case back.
Secure the cable to the case anchor point using the cable tie provided.
Notes:
1. The control unit has a T-250mA internal mains fuse.
2. All electrical connections should be carried out by a qualified
electrician.
To Control Panel
Transformer
L
N
T 250mA 250V
230V ~50Hz 200mA
Figure 10. Mains Connection
Connect the 21VAC lead from the mains transformer to the main PCB. See
Figure 3 for the location of the 21VAC connector.
Caution: Do not apply mains power at this point. Do not work inside the
control unit case when mains power is present.