Electrical
Page 25
8.4
CONTROL SYSTEM WIRING DIAGRAMS
Figure 8-1:
Wiring diagram - utility models
G/Y
Bl
2A
4B
1A
Br
Br
5B
1
Bl
G/Y
Br
C
C
2
G/Y
4
3
2
1
6
5
9
7 8
N L
E
G/Y
R
Br
10
N
L
E
Bl
Br
G/Y
N
L
G/Y
Bl
Br
L
E
N
Br - Brown, Bl - Blue, R - Red, G/Y - Green/Yellow, Y - Yellow
Colour code:
Boiler
On/Off Switch
Control
Thermostat
Limit
Thermostat
Mains Supply:
Use 2 pole isolator
with power ‘ON’ indicator
Burner
Boiler
Terminal Block
Figure 8-2:
Wiring diagram - utility boiler with seal system kit fi tted
Br
Br
R
2
C
1
C
1A
2A
N
7
8 9
G/Y
G/Y
G/Y
Bl
Bl
Br
L
L
E
N E
101112
5B
4B
G/Y
G/Y
Bl
1 2 3
5
4
6
Br
R
13
Br - Brown, Bl - Blue, R - Red, G/Y - Green/Yellow, Y - Yellow
Colour code:
N
L
E
Bl
Br
G/Y
N
L
Bl
G/Y
Br
G/Y
Bl
Br
Br
E
L
N
L
E
N
Boiler
On/Off
Switch
Control
Thermostat
Limit
Thermostat
Pump
Burner
Boiler
Terminal
Blocks
Mains Supply:
Use 2 pole isolator
with power ‘ON’ indicator
Note:
MUST
The factory fitted link between
terminals 1 & 4
be removed
fitted to the control panel.
