Checking The Burner - Potterton Sirius two FS 50 Installation And Service Manual

Fig. Cleaning the exchanger
143
3
Fig. Water jet cleaning
144
5
Fig. Distances and tolerances to be ob
145 served for the flame detection elec
trode and the burner
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2. Clean the pipes inside the heat exchanger using diluted white vinegar.
3. Flush with water.
2
4. After twenty minutes, wash off any dirt with a powerful water jet.
Do not use a pressure washer.
5. Dry the heat exchanger.
6. Check the burner.
7. Clean the siphon.
8. Remount the burner.
4

10.2.4 Checking the burner

1. Remove the burner.
2. Check whether the surface of the burner is damaged in any way.
Replace the burner and its gasket if they are damaged.
3. Check the safety thermostat.
4. Clean the burner with a vacuum cleaner.
5. Check the distance between the flame detection electrode and the
burner.
Tab.62 Distances and tolerances to be observed for the flame
L1
Note
The water will exit the heat exchanger by passing through the
condensates discharge siphon.
Caution
Be careful not to direct the water jet straight at the insulating
surface behind the heat exchanger.
For more information, see
Removing the burner, page 100
Checking the burner, page 103
Cleaning the siphon, page 104
Remounting the burner, page 105
Note
Replace the safety thermostat if it is damaged.
Note
Do not use a brush as it may damage the burner.
detection electrode and the burner
Dis Sirius two FS 50 , Sirius two
tan FS 70 , Sirius two FS 90
ce
L1 7.5 mm with a tolerance of +/-
1 mm
Note
Replace the flame detection electrode if it is damaged.
10 Maintenance
Sirius two FS 110
5 mm with a tolerance of +/- 1
mm
Sirius Two FS 103