Keston 50 - GC Installation And Servicing Instructions page 37

WD50/2/1997
5.6 ILLUSTRATED WIRING DIAGRAM
ILLUSTRATED WIRING DIAGRAM
Boiler Stat
5R
Low Water Pressure Switch Gas Low
Ignition Electrode
Flue Overheat Stat
12
11
10
9
8
7W
7
6
5
4
N
3
L
2
E
1
FILTER
Installation & Servicing Instructions
Chapter 5 : Fault Finding
Thermal Fuse
Overheat Stat
59PK 52BK
Flow High
Limit Stat
Pressure Switch
Gas Valve
W
5BR
6W
Lockout
4B
Lamp
9G
Run
ON/OFF
Lamp
SWITCH
90R
The Keston 50, 60 & 80 Condensing Boilers
d
56R
92OR
93OR
10BK
55BR
Air Pressure Switch
11W
Blower
Page : 34
RAM
Control
1
2
3
4
5
6
7
8
9
10
BR
B
Y-G