INSTALLATION
Greenstar i System Compact - 6 720 807 726 (2013/05)
30
EXTERNAL 230V PROGRAMMER AND TWO HEAT ZONES WITH UNVENTED CYLINDER (S-PLAN PLUS)
Fig. 53 External controls with unvented cylinder
EXISTING INSTALLATIONS
For boiler replacements on an existing system, it is not necessary to zone
the upstairs and downstairs separately, compliance with the zone
requirements can be achieved by a single room thermostat or
programmable room thermostat.
While the system is drained down, a TRV must be fitted to all radiators
except in bathrooms and the room with the thermostat.
SYSTEM WIRING CENTRE
External components are connected to the Wiring centre junction box.
Fig. 54
All of these points are wired to
this point
All of these points are wired to
this point
All of these points are wired to
this point
Table 11 Connection legend
L
E
N
230V Mains Voltage
Double Pole Fused Spur
6720646609-48.1Wo
C
Dual
Thermostat
N
N
M
~
L
N
E
M
~
L
N
E
E
N
L
L
N
E
4
5
6
7
8
9
10
Heating
Zone 1 Valve
Cylinder
Zone Valve
M
~
L
N
E
Heating
Zone 2 Valve
Room T/Stat
Zone 2
Room T/Stat
Zone 1
230V
IN
230V
OUT
FR FS LR LR
L
N
L
N
L
N
L
N
L
N
SYSTEM BOILER CONNECTIONS
PRE WIRED LINK
CH ON
HW ON
L
N
Programmer
EMS
L
L
N
N
E
E
Remove any links from the boiler terminal block.
230V
MAINS
SUPPLY
N
E
L
230V
IN
230V
OUT
FR FS LR LR
L
N
L
N
L
N
L
N
L
N
6720646609-16.1W
o
N E
SW
L
Wiring Centre/Junction Box