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35
SECTION 8
WIRING DIAGRAMS
8.1
EXTERNAL WIRING
The appliance comes with a factory fitted clock to
allow basic operation of the boiler (fig. 43). If
external controls are to be added to the system,
they must be connected to the appliance as
shown in the following diagrams. For advice on
controls that are not featured in this book, please
contact Vokera technical on 0870 333 0520.
8.2
TYPICAL CONTROL APPLICATIONS
The appliance can be used with the following
controls:
●
Vokera RC05 remote control (part no. 405) and
Compact interface (part no. 409)
●
Vokera external sensor (must be used in con-
junction with the RC05), (part no. 2359259)
●
external single-channel, voltage-free time clocks
●
programmable room thermostats.
In addition, the appliance can be used in conjunc-
tion with a typical ‘S’-Plan system, please contact
Vokera technical for further detailed instruction.
NOTE
This appliance is not suitable for use with ‘Y’-Plan
systems.
Fig. 43
Fig. 44
8.3
VOKERA REMOTE CONTROL
The RC05 remote control must be connected to
the appliance as shown in fig. 44. The RC05 can
be used in 3-modes:
●
Boiler only control,
whereby the RC05 con-
trols only the functions of the appliance (Heat-
ing & DHW temperature, reset function, fault
code display, etc).
●
Boiler control with room thermostat func-
tion,
whereby the RC05 controls the functions
of the appliance (Heating & DHW temperature,
reset function, fault code display, etc) and also
functions as a room thermostat.
●
Boiler control with programmable room
thermostat,
whereby the RC05 controls the
functions of the appliance (Heating & DHW
temperature, reset function, fault code display,
etc) and also functions as a programmable
room thermostat.
NOTE
If the RC05 is used in the “boiler only” mode, an
additional control (such as the integral clock) will
be required to switch the heating terminals.
Full details of the operation of the RC05 and its
functions can be found in the installations and
users instructions of the RC05.
8.4
ROOM THERMOSTAT
Should a room thermostat be required, it must be
of the ‘voltage-free’ type, and should be con-
nected to the appliance as shown in fig. 45.
8.5
OTHER CONTROLS
Contact the controls manufacturer and/or Vokera
technical department should you require more
specific information on the suitability of a particu-
lar control.
Further guidance on the recommended practice
for the installation of external controls, can be
found in CHeSS - HC5/HC6 (www.energy-
efficiency.gov.uk).
Fig. 45
factory configuration