5.7.5
Exploded Diagrams Parts Reference List
Boiler Controls Assembly
(Fig. 5.7.1)
GC Number
Code
Description
E01 074
106
Ignition Control Box
170 084
109
Air Pressure Switch
114 076
111
Electrical Terminal Block
114 077
113
On/Off Switch
114 078
114
Green (Run) Lamp
114 079
115
Red (Lockout) Lamp
114 080
116
Pressure Gauge
Waterway, Condensate & Flue Assembly (Fig. 5.7.2)
GC Number
Code
Description
114 115
42
Heat Exchanger
114 117
45
Burner
114 118
46
Burner Head Gasket
114 028
48
Sight Glass
375 527
49
Ignitor Gasket
114 120
50
Spark Ignition Electrode
114 029
53
Pressure Test Nipple
114 032
58
Condensate Trap
375 530
63
Boiler Thermostat
375 532
67
Flue Overheat Thermostat
114 043
69
Combustion Test Plug
375 533
71
Flow Overheat Thermostat
375 534
72
Flow High Limit Thermostat
114 045
73
Water Pressure Switch
Air - Gas Assembly (Fig. 5.7.3)
GC Number
Code
Description
114 131
78
Combustion Blower
114 146
131
Air Orifice
375 536
91
Gas Valve
114 029
53
Pressure Test Nipple
114 073
101
Low Gas Pressure Switch
114 136
87
Gas Injector
Casing Assembly
(Fig. 5.7.4)
GC Number
Code
Description
114 095
1
Cabinet
114 108
23
Data Badge
114 099
5
Air Filter Cover
114 105
19
Air Filter
114 096
2
Cabinet Top Cover
114 100
6
Burner Access Cover Plate
114 109
29
Illustrated Wiring Diagram
114 098
4
Front Door
WD51/2/1997 Chapter 5 : Fault Finding
The Keston 170 Condensing Boiler
Installation & Servicing Instructions
Page : 37
