DOMINA N 80
31
19. Reconnect ignition and flame rectification leads.
20. Reconnect gas union and tighten.
21. Refit combustion chamber cover, secure with screws.
22. Examine seals on room sealed cover refit cover and secure with screws.
23. Turn on gas and electricity.
24. Fire boiler and check all gas joints for soundess.
25. Check flame picture and all controls for correct operation.
26. Check room sealed cover for leakage.
27. Check domestic water flow rate and temperature is within specifications.
28. Check operation of all safety cut off devices.
29. If a combustion analyser is to be used there are test points provided on the front of the room sealed cover.
The right hand grommet is for air and the left hand one is for flue gas. The boiler must reach operating
temperature before this test is carried out (normally 10-15 minutes). CO/CO2 ratio should not exceed 0.0080.
Immediately after servicing (0.0040 at any other time)
30. Refit case and secure with screws.
31. Leave boiler set to customers requirements.
6.04 Flue Gas Analysis
1. The appliance should be checked visually for obvious defects.
2. After removing the jacket on the boiler there
are two test point, one for flue gas and the
other for air.
3. Open the air and flue gas test points;
4. Introduce the probes as far as the retainer;
5. Turn on the hot water tap;
6. Turn the domestic hot water stat to maxi-
mum;
7. Allow the boiler to reach thermal equilibrium
(10 - 15 min.);
8. Take reading;
9. The CO/CO2 ratio should be 0.0040 or below.
If the reading is above this then a full strip
down service must be carried out and the
cause remedied.
10. Following a full strip down service and after
reaching thermal equilibrium the permissible
reading is 0.008 or below.
N.B.:
To ensure correct readings the boiler
must
have reached
normal operating temperature.
Testing the boiler
before thermal equilibrium
has been attained
will give incorrect read-
ings.
N.B.:
If you have only 1 probe, measure separately air and flue gas, close the test point not in use.
FLUE
AIR
Fig. 33
Содержание DOMINA N 80
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