21
UT66000806 - 02
UTN
All copying, even partial, of this manual is strictly forbidden
RD
BU/GY
BK
WH
N
4
6
8
3
2
1
7
ACC
9 8 7 6 5 4
M
1
GNYE
L
N
F
IL
230 / 1 / 50
VK-C
VK-H
CN
C
T
S
SF
TD4T
10.9
UTN
units with
TD4T
wall mounted control with speed selector,
electromechanical thermostat and summer winter selector (heating/
cooling) for 2/4 pipe systems with valves:
BK
=
black, high speed
BU
=
blue, medium speed
CN
=
faston connector
F
=
protection fuse, not supplied
GNYE
=
green/yellow, ground
GY
=
grey, medium speed
IL
=
mains switch, not supplied
M
=
fan motor
RD
=
red, low speed
SF
=
centralised mode selector, not supplied
TD4T
=
wall mounted control with speed selector,
electromechanical thermostat and summer winter selector
for 2/4 pipe systems with valves.
VK-C
=
on/off valve for cooling circuit
VK-H
=
on/off valve for heating circuit
WH
=
white, common
10
WIRING DIAGRAMS
Wiring diagram notes
WARNING! Turn off the power supply before beginning any wiring
connections.
The dashed lines connections must be carried out by the installer.
Each fan-coil thermal-ventilating unit requires a switch (IL) on the feeder
line with a distance of at least 3 mm between the opening contacts, and a
suitable safety fuse (F).
