Bosch Worcester Danesmoor Utility Regular ErP+ 12/18 - Refitting Components

Installation
Greenstar Danesmoor Utility
ErP+
and Utility System
ErP+
- 6 720 821 720 (2018/04) 31
Oil pump - two pipe connection
Converting the oil pump for a double pipe system:
1. Check the inlet pipe connection.
▶ Unscrew the return plug [1].
▶ Screw in by-pass screw [2] that is supplied in a plastic bag attached
to the oil pump.
2. Connect the flexible oil pipe return hose [3] (not supplied) to the oil
pump and return pipe fixing and tighten to secure (for routing see
figure 45.
Fig. 51 Converting to double pipe system
[1] Return plug
[2] By-pass screw
[3] Return pipe connection
5.8 Refitting components
Fig. 52 12/18 Burner O-ring seal shown
Refer to figure 53
1. Align burner combustion head into the boiler collar.
▶ Locate the burner retainer [A] over the threaded lug on the collar [B],
ensure that the burner is level and push the burner firmly onto the
flange ensuring the O-ring seal is fully engaged. Support the burner in
position and secure with the retaining nut [C]. Tighten sufficiently to
hold the burner but do not over tighten.
▶ Check that the burner is seated correctly on its mounting flange and
that the oil hose/s are routed correctly as shown in Fig. 37 and not
trapped in front of or underneath the burner.
2. Attach air duct and tighten clip (D) to secure to the burner air intake.
Fig. 53 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.
Fig. 54 Refitting the control panel
WARNING: Flue gas leakage
The seal between the burner and the mounting flange
must form a gas tight seal to prevent leakage of
potentially dangerous gas from the combustion
chamber.
▶ Unless the burner is level when pushing the burner
into the flange the O-ring may not seat properly
allowing flue gas to escape!
▶ Always check that the O-ring seal (Fig 52 item A) is in
good condition before fitting the burner.
Replace the O-ring seal if defective.
6720813344-19.1Wo
1
3
2
6720821683-26.1Wo
A
1.
2.
A
B
C
D
6720805460-42.1Wo
3
E
E
F
6720809436-11.1Wo