Grant Vortex VTXBH15/26 User Manual

Page 45
11.6 CLEANING THE BURNER:
ALL MODELS
Photocell
The photocell is a push-t in the front of burner body. Refer to
Section 11.9.
1. Holding the body of the photocell and NOT the cable,
carefully pull the photocell out of the burner.
2. Clean the sensor end of the photocell.
3. Replace photocell back in the burner and check that it is fully
pushed in.
Burner air inlet cover
This is located on the right hand side of the burner. Refer to
Section 11.9.
1. Unscrew and remove the two screws and remove the air inlet
cover from the burner.
2. Check inside and remove any debris, leaves, hair, u󰀨, etc.
from the air inlet cover and air damper..
3. Check the condition of the rubber seal around the air inlet
cover. Replace if damaged or missing.
Burner fan housing
This is located over the fan impeller. Refer to Section 11.9.
With the burner air inlet cover already removed:
1. Unscrew and remove the four screws and remove the fan
housing from the burner.
2. Check and clean the fan impeller and remove any debris,
leaves, hair, u󰀨 etc.
3. Check the fan housing is clean and clean as required.
4. Check the rubber seal around the fan housing. Replace if
damaged or missing.
5. Re-t the fan housing to the burner and secure with the four
screws.
6. Check the air adjuster disc (15-26 and 26-46 models only).
Refer to Section 10.4 for details.
7. Re-t the air inlet cover to the burner and secure with the two
screws.
Oil pump lter
This is located under the end cover on the oil pump. Refer to
Section 11.9.
1. Unscrew and remove the four cap screws securing the pump
end cover.
2. Remove the lter and wash in kerosene.
3. Check the O-ring seal around the end cover. Replace if
damaged.
4. Replace the lter and end cover.
5. Re-t the four cap screws, tightening evenly, to secure the
end cap.
11.7 AIR ADJUSTER DISC:
15-26 AND 26-46 MODELS ONLY
Refer to Section 10.4.
11.8 RECOMMISSIONING
! WARNING !
To ensure safe and e󰀩cient operation of the boiler it is
important that re-commissioning is carried out, especially
combustion checks (%CO
2
level, ue gas temperature and
smoke number) after the boiler has been serviced. Refer to
the Commissioning instructions in Section 10.
11.5 CLEANING THE BURNER:
RDB3.2 BURNERS ONLY
FOR 46-70 MODELS
With the burner removed from the boiler:
1. Remove the burner head. Refer to Figure 10-8. Loosen the
two xing screws (3) and remove head (2) from burner.
2. Clean the burner head.
3. Remove di󰀨user/electrode assembly. Refer to Figure 10-8.
• Loosen the di󰀨user clamp screw (7).
• Remove the di󰀨user/electrode assembly (5) from the
nozzle holder (6).
• Disconnect both ignition leads (4) from the electrodes.
4. Replace the nozzle. The nozzle should always be replaced
on an annual service. Refer to Table 2-2 for the correct
nozzle size and type for the required boiler output. Do NOT
attempt to clean the nozzle.
Use a 16 mm spanner to remove/re-t the nozzle, whilst
holding the nozzle holder using a 19 mm spanner.
! CAUTION !
The use of an ill-tting spanner will damage the nozzle
and could lead to an incorrect ame pattern and poor
combustion.
! NOTE !
Ensure that the nozzle is securely tightened so that it does
not leak but DO NOT OVER TIGHTEN!
5. Inspect the ignition electrodes - loosen the electrode clamp
screw and withdraw the electrode assembly. Wipe clean and
check for any cracks in the ceramic insulation. Replace if
necessary.
6. Reconnect ignition leads to electrodes.
7. Re-t the di󰀨user/electrode assembly to the nozzle holder.
8. Slide the di󰀨user along the nozzle holder until hard against
the stop and tighten the di󰀨user clamp screw.
9. Check/adjust the electrode assembly to give the correct gap
(4mm) between the nozzle and electrodes. Refer to Figure
10-9
To adjust the electrode position:
• Loosen the electrode clamp screw.
• Slide the electrode assembly to give the correct gap of
4mm.
• Tighten the electrode clamp screw.
10. Re-t the burner head. Refer to Figure 10-8.
• Locate the head xing screws in the countersunk slots in
the burner collar.
• Tighten the two screws (1) to secure the head (2) in
position on the burner.
11. Check the combustion head setting.
• The correct head setting depends on the required output
of the boiler. Refer to Table 2-2.
• This should be set to ‘0’ in all cases except when the
46-70 is set to either 64 or 70kw output.
• In this case the head is set to ‘4’ (i.e. on the 4th line).
Refer to Figure 10-10.
12. To adjust the head setting:
• Loosen the two screws in the curved slots in outer ring
of the head (NOT the two head xing screws). Refer to
Figure 10-10.
• Rotate the end of the burner head until either ‘0’ or the
4th line, as required.
• Tighten the two screws to x the head in the required
position.
13. Continue cleaning the other burner components as detailed
in Section 11.6.
Section 11: Servicing

Grant Vortex VTXBH15/26 Specifications

General

Brand	Grant
Model	Vortex VTXBH15/26
Category	Boiler
Language	English