Installation
28
GY
WH
OR
GRYE
3
2
1
4
5
6
7
10
9
8
3
2
1
4
5
6
7
10
9
8
BL
C
1
2
Cylinder
thermostat
Room thermostat
A
B
MAINS
230V a.c.
Switched 3 Amp fused,
spur
L
N
Programmer
HTG
HW OFF
HW ON
L
N
Power supply
L
N
3
2
1
remove room
thermostat link
External control
terminal block
Room thermostat
A
B
5
4
Cylinder
thermostat
C
1
2
8
7
6
GY
WH
OR
GRYE
BL
2
3
8
5
7
MAINS
230V a.c.
Switched 3 Amp fused,
spur
L
N
2
3
1
Programmer
HTG
HW OFF
HW ON
L
N
2
1
4
6
7
Power supply
L
N
2
3
1
3
2
1
External control
terminal block
8
10 way
junction box
Valve colour key
WH --- White
GRYE --- Green/Yellow
GY --- Grey
OR --- Orange
BL --- Blue
Mid--- position
diverter valve
HTG = Heating
HW ON = Hot Water ON
HW OFF = Hot Water OFF
Fig. 6.17 --- Permanent live Y---plan
IN
ST
A
LL
ATION
