Worcester Highflow 400 RSF Installation And Servicing Instructions page 30

Fig. 31. Terminal assembly for internal
fitting of the flue.
Fig. 33. Gas control valve adjustment.
230V electrical
supply to pilot
solenoid
Inlet pressure
test point
Fig. 34. Pilot burner assembly.
Flame length 18-20mm
Spark electrode
Spark electrode guide
Rubber sealing gasket
Flue terminal
Clamping ring
230V electrical
supply to On/Off
solenoid
High/Low burner Burner setting
pressure adjusting pressure test point
screws under plastic
cap. See below.
Pilot injector
Fig. 32. Duct and terminal assembly for
internal fitting of the flue.
Flue centring ring
Seal
Duct assembly
Air duct
B
A
C
A Ð Adjustment for domestic hot water (High) gas
pressure setting
B Ð Adjustment for heating (Low) gas pressure
setting
C Ð Plastic cap
Pilot assembly fixing screws
Pilot head
Pilot assembly
Spark electrode location clip groove
Spark electrode lead
30
Flue terminal
Flue duct
External wall
Rubber sealing
gasket
High/Low Retaining
solenoid
screw
230v electrical
supply plug to
High/Low solenoid