Bosch WORCESTER Greenstar Heatslave II External 12/18 Installation, Commissioning And Servicing Instructions page 43

2
3
7
4
Fig. 82 Nozzle access
Refer to figure 83 Photo cell alignment
▶ Refit the break plate [5] ensuring that the break plate is pushed fully
on to the nozzle holder [6].
▶ To align the hole [9] in the break plate with the photocell, ensure that
the fixing screw [3] is located fully in the seating [7] provided in the
nozzle holder [6].
5
8
6
7
Fig. 83 Photocell alignment
▶ Reconnect the HT leads [4]
▶ Refit the blast tube [2] and secure with the screws [1]
Refer to figure 84:
▶ Check that the nozzle [1] and the electrode [2] alignment settings
are correct.
▶ Ensure that the nozzle [1] is aligned centrally within the combustion
head [3].
▶ Inspect for any visible defects.
2 - 2.5mm
Fig. 84 Nozzle and electrode alignment
Greenstar Heatslave II External 2022+ - 6 721 843 980 (2022/01)
1
5
8
6
6720821683-12.1Wo
9
3
0010032270.001
2
3 ± 0.3mm
4 ± 0.5mm
1
6720821683-14.1Wo
Pump filter
▶ Refer to figure 85 and remove the oil pump internal filter, clean in
Kerosene and reassemble.
The internal filter is accessed by removing screws [1] and the oil pump
cover [2].
Fig. 85 Pump filter access
▶ Replace the standard flexible oil line/s at every annual service to
prevent the possibility of leakage due to ageing.
▶ Reassemble the burner components.
▶ Check the O-ring seal located around the combustion head and
replace if necessary. This seal must be in good condition, seal failure
will cause flue gases to escape into the room.
External oil filter
▶ Remove the paper element from the external oil filter and replace it.
If the filter contains a washable element, thoroughly clean in
Kerosene and reassemble into the filter.
Clean the boiler - Manifold access
Refer to figures 86.
▶ Release screws [1] to remove the flue manifold access cover [2] and
clear any debris.
▶ Check the flue system and clean if necessary.
▶ Remove the baffle retainer [3] and baffles [4] from the secondary
heat exchanger.
▶ Check and clean the secondary heat exchanger surfaces.
Do not use wire brushes or cleaning agents to clean the
stainless steel secondary heat exchanger components.
▶ Check the condensate route [5] is clear.
▶ The condensate trap [7] should be removed and cleaned.
▶ Release the pipe locking tab [8] and disconnect the flexible pipe [9]
from the top of the trap and move the flexible pipe up away from the
trap.
▶ Release the trap locking tab [10] and move the trap up and back to
remove from its mountings.
▶ Clean the trap by flushing with water.
▶ Check the O ring seals and replace if necessary, grease the seals with
a solvent free grease.
▶ Refit the trap making sure that the locking tabs are locked in place.
▶ Pour 500 ml of water into drain [5] to refill the condensate trap and
check that the condensate discharge pipe is discharging.
▶ Clean the secondary heat exchanger baffles [4] if necessary and refit
correctly.
▶ Refit the baffle retainer [3].
▶ Check and clean the flue damper, ensure that it is correctly fitted
▶ Check the seal on the manifold access cover [6] and replace if
necessary.
Service and spares
1
2
6720821683-17.1Wo
43