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26
Gas valve inlet test point
27
Control box containing:
External temperature probe terminal
block, remote terminal block, d.h.w tank
terminal block, power supply terminal
block, external controls terminal block
28
Primary circuit pressure switch
29
Condensate trap
30
Fan
31 Air box (air/gas mixer)
32
Ignition electrode
33
Burner
34
C.H. expansion tank
35
By-pass valve
36
Flue outlet pipe
37
Air intake pipe
38
Flue exhaust sampling point
39
Air sampling point
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TECHNICAL INFORMATION
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