6
2
4
1
(N)
2
1
3
1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
9
10
S/L
L
N
N
N
L
L
Bro
wn
Orange
Gre
y
Blue
Bro
wn
Orange
Gre
y
Blue
Selector
Switch
Heating
Switch
Timed
OFF
ON
3020P
Terminals
Mains
Supply
N
L
Danfoss Randall
ATC Cylinder Stat
3 core
2 core +
3 core
2 core
3 or 4 core
Flying lead
Flying
lead
Danfoss Randall
HP22 or HP28
SRZV (Hot Water)
Danfoss Randall
HP22 or HP28
SRZV (Heating)
Danfoss Randall WB12
12-way junction box
Danfoss
Randall
RMT230
Room Stat
Permanent line
supply for boiler
if required
Boiler
Pump
Wiring
continued
W
iring