3 Product description
8
9964042x21-mub-en - V02
2021/11
1.
Remove the white front panel (A) of the controller.
2.
Remove the strain reliefs (B).
3.
Remove the sensor cables of the VFS/US sensors, of the
PWM signal and of the temperature sensors from the
controller circuit board plug connector (C).
4.
Unscrew the two screws to remove the intermediate
level (D).
5.
Remove the strain relief on the 230 V level (E).
6.
Connect the 2-way zone valve to the relay 1.
Observe the polarity of the connection:
Brown:
L
const
Black:
L
Blue:
N
