Worcester Greenstore SC Cylinder 120 litre, Installation And Maintenance Instructions Manual

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Installation
6 720 804 672 (2015/07) 15
Using the Worcester optional Internal Diverter valve
• The installation will use the cylinder sensor supplied with the Integral
Diverter Valve kit to control the hot water temperature.
• The installation, therefore, will NOT need to use the hot water control
thermostat of the cylinder's dual thermostat.
• The installation may require altered wiring of the dual thermostat
(depending on cylinder and thermostat manufacturer) to only use
the high limit thermal cut-out of the dual thermostat.
• The high limit thermal cut out of the dual thermostat MUST be wired
to interrupt the permanent live to the Greenstar i System or CDi
Classic System boiler.
• The 2-port valve supplied with the unvented cylinder will NOT be
used. If it is already physically installed in the pipe work it should be
removed and electrically disconnected from the wiring centre.
Fig. 14 Wiring to protect an unvented hot water cylinder from potentially dangerous high temperatures from the boiler circuit
ST10
DIVERTER VALVE
MOTOR PLUG
CYLINDER
TEMPERATURE
SENSOR
(SUPPLIED IN
DIVERTER KIT)
F1
F3
F2
ST10
ST6
LEAVE LINK
Greenstar CDi Classic System boiler ONLY
LEAVE LINK
SAFETY LIMIT
THERMOSTAT
Connector
Block
CONTROL
THERMOSTAT
NOT REQUIRED
USE CYLINDER SENSOR SUPPLIED
IMPORTANT NOTE:
UNDER NO CIRCUMSTANCES SHOULD THE FEED TO THE
LIMIT STAT BE TAKEN THROUGH THE CONTROL STAT.
COMBINED THERMOSTAT
230 V MAINS
SUPPLY
N E L
Blue Green/Yellow Brown
8
9
7
L
P
N
P
F
S
F
R
N
S
N L L
S
L
R
6 720 804 672-08.1O
Greenstar CDI Classic System wiring example