Keston K260 Installation And Servicing Instructions page 30

WD53/0/1999
5.4 MODULE FUNCTIONAL FLOW WIRING DIAGRAM
Main On/Off
Switch
230V 50Hz
Module
ON/OFF
Switch
Flue Overheat Thermostat
Low Gas Pressure Switch
Low Water Pressure Switch
Flow Overheat Thermostat
Flow High Limit Thermostat
Thermal Fuse Links
Run
Lamp
Installation & Servicing Instructions
Chapter 5 : Fault Finding
EMC
Filter
2
5
RAM CONTROL BOX
Gas
Valve
The Keston 260 and 340 Condensing Boiler
Sequence
Controller
Blower
Relay
Lockout
Lamp
Lockout
Relay
HT
1
4
6
10 8
Blower
Relay
Coil
Return
Thermostat
Blower
Module
Shunt
Lockout
Pump
Relay
Coil
Air
Press
Switch
EMC Filter
Page : 27
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