34
BOILER INSTALLATION SEQUENCE
Connection details for external time
switches and boiler terminal strip.
Fig. I.15 shows the connection details
where a time switch is used without a
room thermostat to control the boiler.
Important:
The arrowed numbers
indicate connection into the relevant
terminal in the boiler terminal strip.
If a room thermostat is to be
connected in addition to a time switch
the wire between the time switch
„ON“ terminal and boiler terminal 4
should be broken by the contacts of
the room thermostat (see schematic
layout, Fig. I.16).
Vaillant optional plug in timer
accessories
Refer to the instructions supplied with
the optional accessories for
connection details.
Upon completion of all electrical
connections refit the terminal box
cover by pushing into place. The
cover is secured by two locking clips.
L
N
2
3
4
L
N
3
4
1
ACL Drayton
Tempus 1, Tempus 2
Lyfestyle LP111, LP711
ACL Drayton
Switchmaster
SM300
ACL Drayton
Switchmaster 980
Danfoss Randall
103 Series
Danfoss Randall
Set 1E, TS975
Danfoss Randall
TS715
Grässlin Towerchron
QE1, QM1
Honeywell
ST610A, ST6100C
Horstmann
Channel Plus
H11, H17, 425 Coronet
Horstmann
Centaur Plus
C11, C17
L
N
2
3
4
L
N
4
3
1
Potterton Myson
EP 4002, EP 5002
Smiths Timeguard
SupplyMASTER
FST11, FST17
Sunvic
Select 107
N
1
A
B
C
N
4
2
L
L
3
3
4
1
2
6
5
E
4
L
3
N
3
E
N
E
2
3
4
N
E
1
L
L
3
5
6
4
L
N
2
3
4
L
N
3
4
1
L
N
2
3
4
L
N
3
4
1
L
N
2
3
4
L
N
3
4
1
N
E
2
3
4
N
E
1
L
L
3
5
6
4
N
E
2
3
4
N
E
1
L
L
3
4
L
N
2
3
4
L
N
3
4
1
L
N
2
3
4
L
N
3
4
1
A
B
D
L
N
L
N
C
N
E
3
1
2
4
3
4
5 E
1
2
4
4
3
2/L 1/N
3
6
5
mains supply
L
N
E
E
Landis & Staefa
RWB7, RWB30
Fig. I.15
Connection details for time switch
3
9
8
7
MAINS
SUPPLY
230 V
50 Hz
L
L
L N
N
N
N
20 VDC
DO NOT USE IN UK!
3 A FUSE
SWITCH
CONTACTS
ROOM
THERMOSTAT
CLOCK
4 5
Fig. I.16
GU_Ecomax_20/0GB
TURBOmax Plus
