Refitting Components; Electrical - Bosch WORCESTER Greenstar Danesmoor 18/25 Installation, Commissioning And Servicing Instruction Manual

5.8

Refitting components

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 gases 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. 53 item A) is
in good condition before fitting the burner.
Replace the O-ring seal if defective.
Fig. 53 12/18 Burner O-ring seal shown
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.
1.
A
C
Fig. 54 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.
Greenstar Danesmoor Kitchen ErP+ and Kitchen System
A
6720821683-26.1Wo
2.
D
B
ErP+ - 6 720 821 686 (2018/04)
3.
E
Fig. 55 Refitting the control panel
5.9

Electrical

▶ CAUTION: ISOLATE THE 230v ELECTRICITY
SUPPLY
▶ Ensure that the electricity supply is safely Isolated
and secured to prevent inadvertent re-connection.
Information on safe isolation can be found in the
Health and Safety Executive guidance HSG85. Using
test equipment approved to GS38 confirm that the
electricity supply is disconnected.
▶ The mains electrical supply to the boiler and system
wiring centre must be common and through either a
common fused double pole isolator or a fused three
pin plug and unswitched socket.
▶ The isolator shall be sited next to the boiler for new
systems and where practicable, replacement boilers.
▶ The isolator must have a contact separation of 3mm
minimum between all poles.
▶ Any additional components that are connected to the
boiler with mains electrical supply must not have a
separate supply.
▶ External 5 Amps.
▶ When stripping wires ensure copper strands do not
fall into the control box.
Access to 230V connections
1. Remove the four fascia retaining screws (A) and position the fascia
assembly (B) on the two fascia location lugs (C) as shown.
2. Release screws (D) from cable clamp (E).
▶ Feed sufficient power cable (F) through the cable clamp (E) and
secure grip with screws (D).
▶ Separate wires from cable end and strip to 6mm.
230V connections
3. Connect LIVE wire (Brown) to terminal L.
▶ Connect NEUTRAL wire (Blue) to terminal N.
▶ Connect EARTH wire (Green/Yellow) to the earth terminal
Route the power cable down the side panel using the clip
provided on the support panel to the external connection
point avoiding any potentially hot surfaces allowing
sufficient cable to pivot the control box into the service
position.
NOTICE: External devices
▶ The boiler and any external devices connected to the
boiler must have a single point of isolation.
See the following pages of electrical diagrams for
details of different systems.
Installation
F
E
6720808218-40.1Wo
33