Worcester W 125 FL Installation & Servicing Instructions Manual page 3

Appliance water flow diagram.
14 Pilot gas pipe
17 Large poppet valve
18 Small poppet valve
19 Cross-ignition bolt
20 Main gas valve
22 Pilot gas button
23 Gas control slide
24 Piezo igniter
25 Water filter
26 Hot water tap
27 Cold water tap
29 Cold water pipe (inlet)
L.P.G.
30 Hot water outlet
31 Volumetric water governor
32 Temperature selector
35 Gas inlet pipe
36 Sealing screw
37 Inlet gas pressure test point
38 Diaphragm
39 Venturi
40 Slow ignition valve
41 Electromagnetic valve
42 Gas filter
43 Pilot gas valve
Natural Gas
44 Pilot gas filter
47 Burner pressure test point
49 Burner injector
50 Main burner
51 Spark electrode
52 Thermocouple
53 Pilot burner
55 Heat exchanger
66 Throttle plate
76 Atmosphere sensing device
119 Temperature limiter
Fig. 2
3