27
14. Re-instate fuel supply and switch on the
burners to ensure that they fire correctly.
15. After the appliance has achieved its operating
temperature, with each burner running, carry
out a flue gas analysis for each burner. (See
Fig. 38).
16. Check for smoke and flue draught reading.
Boiler
Cooker
Air
CO
2
%
Air
CO
2
%
Setting
Setting
9
11.5
5
10
8
11.8
4
10.34
7
11.9
3
10.8
6
12.2
2
11.2
Fig. 36
Fig.38
Fig.37
17. Check and set combustion approximate
settings:
Fig.40
Fig.39
18. Find the correct position of the air control,
which gives the highest reading of CO
2
within
the range of the table above without exceeding
a smoke No. 0-1 (Bacharach Scale). (See
Figs. 39 & 40)
19. Check the oil supply for leaks from storage
tanks via oil filter.
20. Check if complete system is working correctly.
21. Make sure specified clearances are adhered
to.
22. Check flue joints are sealed correctly and that
no escapes are present.
23. If not satisfied check the trouble shooting
guide.
Boiler Burner
flue gas test
point
Oven Burner
flue gas test
point
