Oil Burner And Pump; Refitting Components - Worcester Greenstar Danesmoor Utility Regular ErP 12/18 Installation, Commissioning And Servicing Instruction Manual

5.7

Oil burner and pump

CAUTION: MAINS SUPPLIES
▶ Isolate the oil & water mains supply before starting
any work and observe all relevant safety precautions.
Oil burner
1. Check that the nozzle (A) and the electrode (B) alignment settings
are correct as shown in figure 49.
▶ Ensure that the nozzle (A) is aligned centrally within the combustion
head (C).
▶ Inspect for any visible defects.
NOTICE: IMPORTANT INFORMATION
▶ Before removing or fitting a nozzle (A), loosen screw
(6 figure 50) and move the electrodes (B) forward.
After refitting check that the electrode gaps are
correct, as shown in figure 49.
▶ Whenever replacing the combustion head, ensure
that the photocell is lined up with the sight hole.
▶ The 12/18 model has a brass deflection washer and
locating circlip behind the nozzle. These must be in
place for the correct operation of the burner.
A
5mm
5mm
B C
Fig. 49 Nozzle and electrode alignment
Oil pump
Connecting the oil pump for a single pipe system:
▶ The pump is factory set for single pipe operation with the flexible oil
pipe fitted.
▶ Check connections before use.
Converting the oil pump for a double pipe system:
1. Check the inlet pipe connection (1).
▶ Unscrew return plug (2).
▶ Screw in by-pass screw (3) which will be found attached to the oil
pump.
2. Connect the flexible oil pipe return hose (not supplied) to the oil
pump and return pipe fixing and tighten to secure.
Greenstar Danesmoor Utility ErP and Utility System
1.
3.5 - 4.0mm
B
B
A A
2.0 - 2.5mm
6720805460-38.1Wo
ErP - 6 720 813 286 (2014/09)
1
3
2
4
5
Fig. 50
[1] Inlet pipe connection
[2] Return plug
[3] By-pass screw
[4] Brass air defector washer (12/18 models only)
[5] Locating circlip
[6] Electrode fixing screw
5.8

Refitting components

1. Align burner combustion head into boiler collar.
▶ Locate the burner retainer (A) over the threaded lug on the collar (B),
push the burner firmly onto the flange and secure in place with the
retaining nut (C). Tighten sufficiently but do not overtighten.
▶ Check that the burner is seated correctly on its mounting flange and
that the oil hose/s are not trapped in front of or underneath the
burner.
2. Attach air duct and tighten clip (D) to secure to the burner air intake.
1.
A
C
Fig. 51 Refitting the burner
3. Swing control box back up into operating position and retain in place
by replacing the two securing screws (E) in the bottom locations.
▶ Plug burner lead (F) into control box.
3
E
Fig. 52 Refitting the control panel
Installation
6
2.
6720805460-39.1Wo
2.
D
B
F
E
29