Electrical - Worcester GREENSTAR 24i Junior Installation, Commissioning And Servicing Instructions

2.
Fig. 46 Fitting syphon
Maintenance
There is no need to remove the Syphon Assembly for servicing unless
cleaning is required.
To drain debris from the syphon, during the annual service:
▶ Release the clips and remove the drainage cap (1) from the bottom of
the syphon.
▶ Empty the debris and condensate from the syphon into a suitable
container.
▶ Ensure that the drainage cap and seal are completely clean.
▶ Re-fit the drainage cap to bottom of the syphon.
Fig. 47
4.7

ELECTRICAL

CAUTION: ISOLATE THE MAINS ELECTRICITY SUPPLY
BEFORE STARTING ANY WORK AND OBSERVE ALL
RELEVANT SAFETY PRECAUTIONS.
The boiler is pre-wired with a mains supply cable.
A spare strain relief block is supplied in case the pre-
wired cable is not used.
• The mains electrical supply to the boiler must be through either a
fused double pole isolator or a fused three pin plug and unswitched
socket.
• The isolator shall be situated next to the boiler for new systems and,
where practicable, replacement boilers.
• The isolator must have a contact separation of 3mm minimum in both
poles. Any system connected to the boiler must not have a separate
electrical supply.
• External fuse rating 3A.
6 720 802 047 (2013/05)
1.
6720643895-37.2Wo
1
6720643895-38.2Wo
ACCESS TO ELECTRICAL CONNECTIONS:
▶ Remove boiler casing to access control panel.
Refer to figure 48.
1. Remove the screw securing the control panel.
2. Lower the control panel into the horizontal service position.
1.
2.
Fig. 48 Moving control panel into the service position
When stripping wires always ensure copper strands do
not fall into the control box.
Refer to figure 49
1. Unscrew the three screws in the control panel.
2. Remove the connections cover.
1.
Fig. 49 Removing the connection cover
▶ Pass the 230 V mains power cable, from the control box, through the
grommet at the right hand side of the pre-plumbing manifold and
route to the mains isolator next to the boiler.
SI1 Fuse F1 2.5A
ST6 Frost thermostat connection
ST10 Mains in & external controls connections
ST18 Code plug
ST10
S11
ST18
Fig. 50 Electrical connector information
INSTALLATION
1.
2.
1.
ST6
27