16
!
WARNING
OSO Hotwater (UK) Limited can not be held responsible
if alternative wiring plans are used.
Important:
Before resetting the safety cut-out or altering
the thermostat setting isolate electrical supply to the
unit before removal of the lid. Ensure the lid to the elec-
trical box is replaced before power is switched back on.
4.9 S-plan wiring
OSO DELTA Twin Coil VIP cylinders can be fitted with
all types of boilers. Standard boilers operate using
room and cylinder thermostats. Please follow upper
diagram: ‘Wiring for Standard Boiler’.
4.9.1 Thermistor controlled boilers
Many popular boilers now use a thermistor principle.
A thermistor temperature sensor is supplied with the
boiler to attach to the cylinder. Temperature infor-
mation is relayed back to the boiler control system.
A Pocket is provided (see below to secure the sensor
on the DELTA Twin Coil VIP cylinder. The probe is run
through a channel from base of cylinder to the immer-
sion housing and housed there in a pocket. The ther-
mistor cable should be secured using the supplied
clamps in the bottom opening of the channel. The
supplied motorised valve must be used in accordance
with Building Regulation G3. This is wired from the
supplied cylinder thermostat, wired as high limit stat.
Please follow lower diagram: ‘Wiring for Thermistor
Controlled Boiler’.
1 2
E
2
3
1
T6360B
B1
Br
G
O
G/Y
3
5
7
3
4
N
L
C
NO
NC
L
N
E
N
L
E
N
L
ST6400
Boiler
Pump
3
2
1
3
2
3
2
2
2
3
1
V4043H
Zone Valve (DHW)
(supplied)
OSO cylinder thermostat
(supplied)
Isolated Mains
Supply From
Fused Spur
L N E
Zone Valve (Htg)
(not supplied)
Room
thermostat
6
B1
Br
G
O
G/Y
2
2
3
1
1
V4043H
4
8
10
9
HTG
ON
HW
ON
1 2
E
2
3
1
T6360B
B1
Br
G
O
G/Y
3
5
7
3
4
N
L
C
NO
NC
L
N
E
N
L
E
N
L
ST6400
Boiler
Pump
3
2
1
3
2
3
2
2
2
3
1
V4043H
Zone Valve (DHW)
(supplied)
OSO cylinder thermostat
(supplied) - Wired as
high limit thermostat
Isolated Mains
Supply From
Fused Spur
L N E
Zone Valve (Htg)
(not supplied)
Room
thermostat
6
B1
Br
G
O
G/Y
2
2
3
1
1
V4043H
4
8
10
9
HTG
ON
HW
ON
Thermistor wire
Connected to
boiler control
system
Ther
mist
or
Wiring diagram
for Standard
Boiler
Wiring diagram
for Thermistor
controlled Boiler
Please contact
boiler manufact-
urer for boiler
specific wiring.
Summary of Contents for Delta Twincoil DTC 200
Page 26: ...26 NOTES ...
