25
Mynute 24m
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 0870
333 0520.
Fig. 19
NOTE: L-N-E IS ADVISABLE
P2
Central heating temperature control
P3
Off/summer/winter selector
P5
Heating max potentiometer (if necessary)
T.A.
Ambient thermostat
P.F.
Air pressure switch
T.L.
High limit thermostat
P.A.
Water pressure switch
S.R.
Primary NTC sensor
JP1
Jumper CH only
JP2
Setting timer
JP3
Natural gas or LPG selector
JP4
Jumper disable/enable DHW absolut thermostat
F
External fuse 2 A F
F1
Fuse 2 A F
E.A./R.
Spark/sense electrode
RL1
Pump relay
RL4
Ignition relay
MOD
Modulator
LED
Led OK (green)
Led alarm (red)
Combustion test (blink orange)
P
Pump
V
Fan
CP04
Control board
TRF1
Transformer
CN1-CN9
Connettori di collegamento
ACF01X
Ignition control board
TRX
Ignition transformer
ME
External connector block
SP
ARK/SENSE
ELECTR
ODE
GAS
VA
LV
E
2 AF fuse
blue
bro
wn
brown
blue
yello
w-green
bro
wn
blac
k
blac
k
blue
pink
PA-3
CN9-1
PA-1
CN9-2
MOD
CN9-3
PA-3
CN9-4
red
red
PF-1
CN8-5
blac
k
blac
k
red
red
PF-3
CN8-6
blac
k
blac
k
blue
brown
blue
brown