9
Installation
3
3
3.2 Electrical connection
Before working on the unit, switch off the power supply and secure
it against being switched on again!
Check for the absence of power!
Electrical connections may only be made by a specialist and in
compliance with the applicable regulations. The controller may
not be put into operation if there is visible damage to the housing,
e.g. cracks.
Caution
Danger
Low-voltage cables such as temperature sensor cables must be
routed separately from mains voltage cables. Feed temperature
sensor cables only into the left-hand side of the unit, and mains
voltage cables only into the right-hand side.
Caution
Fig.
3.2.1
Caution
The cables being connected to the unit must not be stripped by
more than 55mm, and the cable jacket must reach into the housing
just to the other side of the strain relief.
The customer must provide an all-pole disconnecting device, e.g.
a heating emergency switch.
Connect only 230VAC mains voltage to potential-free relay R5,
never low voltage!
1. Select necessary program/hy-
draulics (see 2.5)
2. Open controller housing (see 3.1)
3. Strip cables by 55mm max., in-
sert,
fi
t the strain relief devices,
strip the last 8-9mm of the wires
(Fig.3.2.1)
4. Open the terminals using a sui-
table screwdriver (Fig. 3.2.1) and
make electrical connections on
the controller (Pages 10-12)
5. Re
fi
t upper part of housing and
fasten with screw.
6. Switch on mains voltage and
place controller in operation
8...9
~30°
max. 55