VOKERA Synergy 29 Installation & Servising Instruction - page 36
34
SECTION 8
WIRING DIAGRAMS
8.1
EXTERNAL WIRING
The appliance comes with a factory fitted link to
allow basic operation of the boiler via the mode
selector switch. 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
INSTALLATION OF VOKERA TWIN CHANNEL
PROGRAMMER (see fig. 39)
●
Isolate the appliance from the electrical supply
and remove the casing as described in 4.7.1
●
Remove the blanking plate from the clock
aperture
●
Remove the appliance PCB cover
●
Remove the factory fitted link between
terminals 3 & 4 on the appliance terminal strip
●
Take the wires supplied with the programmer
and connect them as shown in fig. 39
●
Mount the programmer to the clock aperture
plate ensuring it’s secured in place
●
Connect any external controls as detailed in
8.6 or 8.7
●
Replace the PCB cover and casing once the
programmer installation has been completed.
8.3
TYPICAL CONTROL APPLICATIONS
The appliance can be used with the following
controls:
●
Vokera mechanical clock (part no. 201)
●
Vokera digital clock (part no. 202).
●
Vokera room thermostat (part no. 011)
●
Vokera twin-channel programmers
●
Twin-channel programmers
●
Single-channel time clocks
●
Programmable room thermostats.
In addition, the appliance can be used in
conjunction with a typical ‘S’-Plan or ‘Y’-Plan
system.
8.4
VOKERA TIME CLOCK (see fig. 40)
●
Isolate the appliance from the electrical supply
and remove the casing as described in 4.7.1.
●
Remove the blanking plate from the clock
aperture
●
Remove the appliance PCB cover
●
Remove the factory fitted terminal strip and
harness from the main PCB
●
Take the wires supplied with the time clock and
connect them as shown in fig. 40
●
If no room thermostat is to be fitted, ensure a
link is fitted between TA & =
●
Mount the time clock to the aperture plate
ensuring it’s secured in place
●
Replace the PCB cover and casing once the
installation has been completed.
8.5
VOKERA ROOM THERMOSTAT (see fig. 41)
Connect the Vokera room thermostat to the
appliance as detailed in fig. 41.
8.6
“S” PLAN WIRING
See fig. 42.
8.7
“Y” PLAN WIRING
See fig. 43.
8.8
OTHER CONTROLS
Contact the controls manufacturer and/or Vokera
technical department should you require more
specific information on the suitability of a
particular control.
Further guidance on the recommended practice
for the installation of external controls, can be
found in CHeSS - HC1/HC2 (www.energy-
efficiency.gov.uk).
Fig. 40
Fig. 39
Vokera Twin Channel
Programmer
H/W On
H/W Off
Heating On
Heating Off
Live Supply
Neutral
Pink
Grey
Red
Purple
Brown
Blue
Blue
Bro
wn
White
Red &
White
Vokera room thermostat
Fig. 41