Service Requirements; Sealed System Only; Clean The Burner; Oil Burner Nozzle - Bosch Worcester Danesmoor Utility Regular ErP+ 12/18 Installation, Commissioning And Servicing Instruction Manual

Fig. 77 Expansion vessel removal
3. Unplug burner lead (F) from control box.
2. & 3.
C
D
Fig. 78 Burner lead
4. Loosen clip (G) to detach air duct pipe from burner (H).
▶ Unscrew burner retainer nut ( I ) and gently pull burner forward so
that the retainer (J) is free of the lug (K).
4.
J
I
Fig. 79 Burner removal
Greenstar Danesmoor Utility ErP+ and Utility System
1
F
D
G
K
ErP+ - 6 720 821 720 (2018/04)
7.3

Service requirements

See the following instructions for detail of some of the service
requirements listed below:
▶ Check and clean the burner.
▶ Replace the burner nozzle and flexible oil pipe/s.
▶ Check and clean the baffle retainers.
▶ Check and clean the baffles.
▶ Check that the flue damper is correctly fitted, if required.
▶ Check and clean the heat exchangers surfaces.
▶ Check the combustion chamber access door insulation board.
▶ Check that the flue system is unobstructed and clean as necessary.
▶ Clean or replace all oil filters.
▶ Check that the condensate system is not obstructed, clean and refill
the condensate trap.
7.4

Sealed system only

The PRV is a safety device and must be checked for correct operation.
The expansion vessel pressure must also be checked and adjusted if
required.
7.5

Clean the burner

▶ Remove the two hex head screws [1] and remove the air intake cover
[2] and clear any debris from the air intake and air damper.
▶ Remove the four screws [3] and remove the suction inlet [4] to gain
access to the fan.
▶ Clean both sides of the fan and suction inlet cover with a brush and
compressed air.
▶ Check the condition of the gaskets between these parts and replace
if necessary.
▶ Note the position of the air damper adjustment and check the air
damper moves freely.
▶ Check that the fan rotates freely.
▶ Reassemble the components.
4
Fig. 80 Fan access
7.6

Oil burner nozzle

Before removing or fitting a new nozzle refer to figure 81:
▶ Remove the screws [1] from the blast tube [2] and remove the blast
tube
There is a recirculation tube fitted to the 12/18 models,
this does not need to be removed from the blast tube
▶ Unplug the HT leads [4]
▶ Loosen the screw [3] securing the break plate [5] and slide the unit
off
Service and Spares
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2
1
6720821683-13.1Wo
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