The 4 core cable fitted to the actuator can now be connected to the system following the
simple colour-coded guide below.
IF FITTING TO A HW ZONE:
Wire Colour
System Connection
Blue
Any Neutral supply.
Brown
‘Call’ terminal of cylinder stat if fitted, otherwise
the HW on terminal of the programmer.
Orange
Live terminal on boiler
Grey
Any permanent live supply.
IF FITTING TO A CH ZONE:
Wire Colour
System Connection
Blue
Any Neutral supply.
Brown
Call terminal of room stat if fitted, otherwise the
CH ON terminal of the programmer.
Orange
Live terminal of pump and boiler
Grey
Any permanent live supply.
No earth connection is required. Ensure all connections are good and the screws secure. A
torque of O.75Nm is recommended for fixing the wires in place.
NOTE: In the event that the Z222 is being used in an unconventional system, the above
connections may be incorrect. In this case, please seek advice.
4
Wiring connections
INSTALLATION AND CONNECTION SHOULD ONLY BE CARRIED OUT BY A SUITABLY QUALIFIED PERSON AND IN ACCORDANCE WITH
THE CURRENT EDITION OF THE IEE WIRING RFGULATIONS. A CLASS ‘A’ SWlTCH (HAVING CONTACT SEPARATION OF AT LEAST 3MM
IN ALL POLES) MUST BE INCORPORATED IN THE FIXED WIRING AS A MEANS OF DISCONNECTING THE SUPPLY, NORMALLY AT THE
CONSUMER UNIT. THE SYSTEM MUST BE APPROPRIATELY FUSED.
WARNING: ISOLATE MAINS SUPPLY BEFORE COMMENCING INSTALLATION
