Technical data

46
10.0 Electrical
© Baxi Heating UK Ltd 2012
Mains
Supply.
Pump
E
N
L
E
N
L
E
CH1
N
L
(Out)
(On)
(Out)
(Out)
Boiler On (In)
CH2
(On)
C/S
(Out)
C/S
(In)
DHW
(On)
DHW
(Off)
(Out)
E
N
Valve
Valve
Out Door
Sensor
(In)
(Out)
Out Tank
Sensor
Out Door
Sensor
(In)
In Tank
Sensor
(+12v)
Back
Light
CL +
Signal
CL -
Signal
Fused
8
Fused
8
Fused
8
External
Wiring
Centre
Fused
8
S - Plan System Components
Y - Plan System Components
W - Plan System Components
Fused
8
10.11 Wiring Center
NOTE: As the boiler does not know what the actual room or
DHW temperature is, the boiler temperature is fixed at 80°C.
Appliance MUST have a permanent Live/Neutral/Earth
connection. Pump MUST be connected directly to the appliance.
System Requirement - The default for parameter 5700 (‘1’), is
setup to control through an external wiring centre. To check the
parameter - see section 11.3.k.
As an external programmer will be used to control the central
heating and domestic hot water times, the installer must make
sure that the boiler THINK Controller programs time for the
central heating and DHW are set to 24h on (see User Manual).
Retro Installations
NOTE: This installation is used only if the user wishes to utilise their existing temperature
and time controls.
Outside and DHW sensors cannot be used. The THINK Controller must remain on the
appliance.