27
Mynute
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 boiler as shown in the following diagrams. For
advice on controls that are not featured in this
book, please contact Vokera technical on 0141
945 6810.
8.2
INSTALLATION OF VOKERA TWIN CHANNEL
PROGRAMMER
●
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 of the appliance terminal strip.
●
Take the wires supplied with the programmer
and connect them as shown in fig. 26.
●
Mount the programmer to the clock aperture
plate ensuring it’s secured in place.
●
Connect any external controls as detailed in 8.4
or 8.5.
●
Replace the PCB cover and casing once the
programmer installation has been completed.
8.3
INSTALLATION OF VOKERA TIME CLOCK
(24 hours & 7 day versions)
●
Isolate the appliance from the electrical supply
and remove the casing as described in 4.7.1.
●
Remove the circular blanking disc from the
clock aperture plate.
●
Remove the PCB cover from the appliance.
●
Connect the wires to the clock as shown in
fig. 27.
●
Mount the clock to the clock aperture plate
using the screws provided.
●
Remove the factory fitted link between terminals
3 & 4 on the appliance terminal strip.
●
Connect the clock wires to the appliance
terminal strip as shown in fig. 27.
●
Replace the PCB cover and casing once the
clock installation has been completed.
Fig. 26
NOTE
If the connection of a room thermostat is also
required, the spare terminals on the appliance
terminal strip can be used for this purpose.
If any external time clock is preferred, it must
have “voltage free connections”. This appliance
requires a permanent electrical supply.
NOTE
The appliance and integral programmer/clock
must be connected as described in these
instructions, to ensure the safe and correct
operation of this appliance.
Vokera twin channel
programmer
Fig. 27
APPLIANCE TERMINAL STRIP
Clock connections: 1. red/white
2. blue
3. white
4. red/black
24V room
thermostat