36
BOILER INSTALLATION SEQUENCE
Connection details for control systems utilising 2 x 2 port motorised valves
via external wiring centre/junction box
Diagram only applies to the specific controls mentioned
L
N
L
N
3
4
5
N
L
CENTRAL
HEATING
ON
HOT
WATER
ON
HOT
WATER
OFF
3 amp fused
main supply
THERMOcompact
terminal strip
Programmer
for programmer connections see fig. 16.d
L
N
L
N
3
4
5
5
3
6
7
8
External wiring centre/junction box*
3
4
5
6
7
8
9
10
N N L L
*Do not use pre-wired printed circuit board type
not used
EARTH
BLUE
BROWN
GREY
ORANGE
Hot water 2 port motorised valve
4
E
5
3
10
E
C
A
N
4
N
4
2
4
4
3
3
3
3
3
2
2
2
2
1
1
L
2
1
L
1
1
1
1
3
C
B
E
E
E
E
Vaillant VRT 9090
ACL Drayton Digistat 2, 3, 4
ACL Drayton RTS 1, 2
Danfoss Randall RX-1
Danfoss Randall RMT 230
Danfoss Randall RET 230
Tower SS
Honeywell T6360
Horstmann HRT 1
Siemens-Landys & Staefa RAD 1
Sunvic TLX 2000 series
5
9
6
L
N
E
Room thermostat
2
1
C
YL
3
3
2
2
BK
1
2
2
1
1
RED
C
1
1
3
ACL Drayton HTS3
Danfoss Randall ATC
Tower CS1
Honeywell L641
Horstmann HTC1
Siemens-Landis & Staefa RAM 1
Sunvic SA 2452
10 7
E
Cylinder thermostat
3
E
2
E
E
EARTH
BLUE
BROWN
GREY
ORANGE
Central heating 2 port motorised valve
4
E
5
3
9
N
L
2
3
4
5
3
not used
7
6
1
not used
Lifestyle LP241, LP 522, LP 722
Tempus 6, Tempus 7
Danfoss Randall CP 715, FP715
Note:
*Earth not required
Danfoss Randall Set 2E, Set 3E
Note:
*Earth not required,
Link L - 2 - 5
Grässlin Towerchron QE2
Honeywell ST699B, ST799A
Note:
Link L - 5 - 8
Honeywell ST6200, ST6300, ST6400
Horstmann Channel Plus H21, H27
Note:
*Earth not required,
Link L - 2 - 5
Siemens-Landis & Staefa RWB2, RWB9
Potterton Myson EP 2002, EP 3002, EP 6002
Note:
Link L - 5
Sunvic Select 207
N
L
2
3
4
5
3
not used
7
6
1
not used
N
L
2
3
4
5
3
not used
7
6
1
E
5
not used
N
L
2
3
4
5
3
7
6
1
E
not used
not used
N
L
2
3
4
5
3
7
6
1
not used
E
*
not used
N
L
2
3
4
5
3
7
6
1
E
*
not used
5
6
not used
N
L
2
3
4
5
3
7
6
1
not used
not used
N
3
5
6
7
5
6
not used
7
4
L
3
8
not used
N
L
2
3
4
5
3
7
6
1
not used
not used
N
L
2
3
4
5
3
7
6
1
E
*
not used
5
6
not used
N
L
2
3
4
5
3
7
6
1
not used
not used
Fig. I.19
Fig. I.20
THERMOcompact
