Electrics - Worcester Greenstar Heatslave II External 12/18 Instruction Manual

1
2
E
Low voltage terminal strip
1
NOT USED
2 EMS bus connections
3 Service mode switch
4 Outdoor compensation sensor
5 NOT USED
6 NOT USED
30

ELECTRICS

C
G H
Mains voltage socket (provided)
B Shown here from top view,
wiring access is from other side.
NOTE: on both plug & socket
Earth is wired centrally.
Mains supply plug (pre-wired)
A Mains supply plug & lead is pre-
wired to the boiler control box,
see diagram & table below.
Pre wired links
Mains voltage terminal strip
7 External 230V AC frost thermostat
8 230 VA.C. switched live inputs
9 230 VA.C. mains output to wiring
centre
10 NOT USED
11 NOT USED
12 NOT USED
13 Boiler 230 VA.C. mains supply
pre-wired to plug
INSTALLATION & SERVICING INSTRUCTIONS FOR GREENSTAR HEATSLAVE II EXTERNAL 12/18-18/25-25/32
ELECTRICS
ISOLATE THE MAINS ELECTRICITY
D
SUPPLY BEFORE STARTING ANY
WORK AND OBSERVE ALL RELEVANT
SAFETY PRECAUTIONS.
IMPORTANT: THIS APPLIANCE
PROVIDES A PERMENANT EXTERNAL
ELECTRICAL SUPPLY FOR SERVICING
AND MUST THEREFORE BE FED VIA A
CIRCUIT BREAKER INCORPORATING
EARTH LEAKAGE PROTECTION.
IMPORTANT: OBSERVE ELECTRO-STATIC
DISCHARGE PRECAUTIONS.
DO NOT TOUCH THE PCB CIRCUITS.
WARNING: EXTERNAL EQUIPMENT
OPERATED AT 230 VOLTS SHOULD NOT
BE SERVICED OR REPAIRED UNDER
ADVERSE WEATHER CONDITIONS.
• The boiler is pre-fitted with a mains supply
cable and plug (A).
• The 230V supply to the boiler must be wired
to the socket provided (B).
B
• The mains electrical supply to the boiler must
be through a fused double pole isolator and
must have earth leakage protection.
• The isolator must have a contact separation
of 3mm minimum in both poles.
• Any additional equipment connected to the
N L
boiler must not have a separate electrical
supply.
• External fuse rating 5A.
IMPORTANT: When wiring mains and
control cables ensure that the cable has
sufficient length for the control box to be
slid forward and tilted over.
Access to electrical connections:
Access to wiring connections is via the Installer access
cover at the bottom front of the control board.
A
14Release the 3 captive screws (C) and remove
the Installer access cover (D).
Electrical connections:
2 E. Low voltage connections.
G. Mains voltage connections.
H. Fuse carrier.
NOTE: DHW LR switched live:
DANGER - 230V:
This input provides the live feed in from a
connection for a proprietary twin channel
control to time the tank reheat function on
the DHW. All Worcester twin channel digital
controls provide this functionality, but the
link is required for them to function.
6 720 805 210-01