23
B063
3.
ELECTRICAL
DIAGRAMS
L
EGEND
:
A
=
Time Clock Connector
B
=
Central Heating Selection (Winter) and
Temperature Adjustment
C
=
Connector for Total Check System
D
=
Domestic Hot Water Temperature Adjustment
E
=
Soft-light Adjustment
F
=
Maximum Heating Adjustment
G
=
On/Off Switch
H
=
On/Off L.E.D.
I
=
Fume Sensor L.E.D.
J
=
Ignition Failure (Lockout) L.E.D.
K
=
Low System Water Level/Lack of Circulation L.E.D.
L
=
Reset Button
M
=
Economy/Comfort Selector
N
=
Overheat L.E.D.
O
=
Temperature L.E.D.s
P =
Transformer
Q
=
Circulation Pump Relay
R
=
Fan Relay
S
=
Gas Valve Relay
T
=
Motorised Diverter Valve Relay
V
=
Spark Generator
U
=
Anti-cycling Device Adjustment for Heating
A01
=
Circulation Pump
A02
=
Fan
A03
=
Spark Generator/Gas Valve Supply
A04
=
Motorised Diverter Valve
A05
=
Flame Detection Circuit
A06
=
Detection Electrode
A07
=
Main Circuit Temperature Probe
A08
=
Domestic Hot Water Temperature Probe
A09
=
Domestic Hot Water Flow Switch
A10
=
Main Circuit Flow Switch
A11
= Modulator
A12
=
Air Pressure Switch
A13
=
Safety Thermostat
A14
=
External (Room) Thermostat
Colours:
Gry
=
Grey
Wh
=
White
Pnk
=
Pink
Brn
=
Brown
Bl
=
Blue
Blk
=
Black
Rd/Blk
=
Red/Black
