ELECTRICAL CONNECTIONS
4.8
Connect the electricity supply and external controls (using suitable
mains cable) as follows:
Wire the cable(s) into the appropriate connections in the electrical plug
provided, referring to Figure 15. Live supply to L1, Neutral and Earth as
indicated. Check that L2 and L3 are linked.
To provide correct cable retention, fit the piece of tubing supplied over
the cable as it passes through the clamping arrangement. The cable will
be held in position as the plug cover is fitted.
If a programmer/room thermostat is to be fitted remove the red link
between L2 and L3 and connect the device across these terminals. Any
external controls fitted must be rated at 230V 50Hz and have volt free
contacts.
15
Room
thermostat
Cylinder
thermostat
Heating
valve
Hot water
valve
230V
mains input
A
B
C 1
2
4
5
6
1
1
3
2
4
5
2
3
1
5
L
N
8
5
9 10 3 2 1
9 2 3
3
4
5
6
7
E
L
N
8
9
10
2
1
HW
HTG N
L
2
1
10
3
8
2
1
10
3
1
2
3
Not
used
Brown
Blue
Grey
Orange
Green/
yellow
Brown
Blue
Grey
Orange
Green/
yellow
CT200
L641A
V4043H
V4043H
Programmer
Or
Time
controller
Boiler
Pump
N
E
L
6 3
3 4
N L
N L
Honeywell ST6998 1002
(Link L-5-3)ST 799A
2= Pump live
1=Switched live
L=Permanent live
ST6400 ST6300
ST6200
6 4 3 2
2 1 E N L
L N E
1
Optional
T4360A
Frost thermostat
Opens heating
circuit only
T6360B Room thermostat
230V 50Hz
Pump
Boiler
L2
L3
E
N
L1
Motor
Motor
V4043H
Zone valve
heating
V4043H
Zone valve
DHW
T6360B
Room
thermostat
L641A
Cylinder
thermostat
2
1
3
1
C
Br
own
G
re
y
G
re
y
Blu
e
Blu
e
Gr
e
en Y
ellow
Gr
e
en
Y
ellow
Br
own
Or
ang
e
Or
ang
e
16
FULLY PUMPED ‘S’ PLAN
L1
L2
N
L3
MAINS
PUMP
PROGRAMMER
19
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