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Installation and safety advice
Caution! This device is intended to be used for comfort applications. Where a device failure endangers human life and/or
property, it is the responsibility of the owner, designer and installer to add additional safety devices to prevent or detect a
system failure caused by such a device failure. Vector Controls or its affiliates cannot be held liable for any damage
caused by such a failure. Failure to follow specifications and local regulations may endanger life, cause equipment damage
and void warranty.
Connection diagram
X
24V AC/DC
COM
2
5
G
M
1
3
G0
G0
COM
0V (COM)
OUT
Description:
G0
Power supply:
G
Power supply:
M
Signal common:
X1
External temperature input:
TCY-MT2:
X2
Changeover input:
U1
Analog output:
TCY-MT4:
U1
Analog heating output:
U2
Analog cooling output:
Mechanical Design and installation
The unit consists of two parts: (a) The power case with attached mounting plate and (b) the front part.
Mounting location
On an easy accessible interior wall, approx. 1.5 m (4.5') above the floor in an area of average temperature.
Avoid exposure to direct sunlight or other heat sources, e.g. the area above radiators and heat emitting electrical
equipment.
Avoid locations behind doors, outside walls and below or above air discharge grills and diffusers.
Location of mounting is less critical if external temperature sensors are used
Installation
1.
Connect the wires to be connected to the terminals of the power case according to wiring diagram
2.
Install the mounting plate to the flush mounting box. Make sure that the nipple with the front holding screw is
facing to the ground. Make sure the mounting screw heads do not stand out more than 5 mm (0.2") off the
surface of the mounting plate.
3.
Ensure that the jumpers are set correctly.
4.
Slide the two latches located on the top of the front part into the hooks at the upper side of the mounting plate.
5.
Carefully lower the front part until the interconnector reaches the mounting-plate. Continue pressing in a gentle
way until the front part is fully connected. While inserting the connectors, a slight resistance can be felt. This is
normal. Do not use excessive force!
6.
With a Philips-type screw driver of size #2, carefully tighten the front holding screw to secure the front part to
the mounting plate. This screw is located on the front lower side of the unit. There is no need to tighten the
screw too much.
Doc: 70-00-0058 V1.2, 20160322
Subject to alteration
X
T CO
T EXT
COM
IN
IN
Cool
OUT
6
7
8
X2
M
X1
4
TCY-MT2
U1
H/C
24V AC/DC
2
X
T INT
G
1
3
G0
G0
Signal
0V (COM)
COM
0V, -24VDC, internally connected to signal common
24VAC, +24VDC
Common 0 potential for analog inputs and analog outputs.
NTC 10kΩ @ 25°C (77°F)
NTC 10kΩ @ 25°C (77°F)
0...10 V DC
0...10 V DC
0...10 V DC
© Vector Controls GmbH, Switzerland
www.vectorcontrols.com
TCY-MT
Technical specifications
Signal
X
T EXT
COM
IN
7
8
M
X1
4
5
6
U1
G0
U2
Heat
Signal
Cool
OUT
COM
OUT
X
T INT
TCY-MT4
Page 3
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