CIAT V6 User manual

Brand: CIAT

Model: V6

Type: User manual

THERMOSTAT V6

05 - 2023

EN7626224-00

Instruction manual

CONTENTS

1 - GENERAL INFORMATION ...................................................................................................................................................... 3

1.1 - Safety instruction ................................................................................................................................................................. 3

1.2 - Operating limit. ................................................................................................................................................................... 3

1.3 - Main Features ..................................................................................................................................................................... 3

1.4 - Screen display ..................................................................................................................................................................... 4

1.5 - Setting the ventilation .......................................................................................................................................................... 4

1.6 - Setting the operating mode ................................................................................................................................................. 4

1.7 - Changing the operating mode ............................................................................................................................................. 5

1.8 - Air temperature measurement ............................................................................................................................................. 5

2 - OPERATION ............................................................................................................................................................................ 6

2.1 - 2P AC and 2P EC ................................................................................................................................................................ 6

2.2 - 4P AC and 4P EC ................................................................................................................................................................ 9

3 - INSTALLING THE UNIT .........................................................................................................................................................11

4 - TECHNICAL SPECIFICATIONS ............................................................................................................................................ 14

5 - CONFORMITY ....................................................................................................................................................................... 15

6 - TROUBLESHOOTING ........................................................................................................................................................... 15

7 - ENVIRONMENTAL PROTECTION ........................................................................................................................................ 15

The images in these documents are solely for illustration and are not contractual. The manufacturer reserves the right to change the design at any time without notice.

Translation of the original document

THERMOSTAT V6 EN-2

1 - GENERAL INFORMATION

The CIAT V6 electronic thermostat is designed to actuate fan coil units, for 2- or 4-pipe applications with an AC or EC motor





ventilation with either:

■A 230 V 3-speed AC motor.

■A 0 -10 V 3-speed EC motor.



1.1 - Safety instruction



                



in France and BS7671 in the UK.

1.2 - Operating limit.

The thermostat has a pollution degree of 2

■Ambient temperature and humidity



■Operating environment





event:

-SO < 0.02 ppm

-H2S < 0.02 ppm

-NO, NO2 < 1 ppm

-NH3 < 6 ppm

-N2O < 0.25 ppm



1.3 - Main Features

■Control of a manual or automatic 3-speed fan.

■Manual or automatic heating/cooling switching.

■Potential-free input for window switch.

■



Designation Motor Valve actuator Coil Model Reference

AC-2P + CO thermostat AC 3-speed 2 pipes V6 A 7625601

AC-4P thermostat AC 3-speed 4 pipes V6 B 7625602

EC-2P + CO thermostat EC 3-speed 2 pipes V6 C 7625603

EC-4P thermostat EC 3-speed 4 pipes  7625604

EN-3 THERMOSTAT V6

1 - GENERAL INFORMATION

1.4 - Screen display





Heating

Air conditioning

Economy mode

Low speed ventilation

Medium speed ventilation

High speed ventilation

Auto ventilation



1.5 - Setting the ventilation

The ventilation is set using the 





1.6 - Setting the operating mode

The thermostat's operating mode is adjusted using the 



or air conditioning mode, or thermostat automatic mode selection.

THERMOSTAT V6 EN-4

1 - GENERAL INFORMATION

1.7 - Changing the operating mode

The 



The operating modes are displayed as follows:

Mode Display Result

Comfort Comfort mode uses the temperature setpoint for control

The user CAN change the setpoint

ECO

(moon icon)



The user CANNOT change the setpoint

Frost protection

(FP)





If the thermostat is in air conditioning only mode, frost protection

mode will no longer operate.

The user CANNOT change the setpoint

O

Thermostat o



In this case, frost protection mode will no longer operate,

regardless

of the fan coil unit operation

(heating and/or air conditioning)

1.8 - Air temperature measurement







150 cm

20 cm

min.

EN-5 THERMOSTAT V6

2 - OPERATION





2.1 - 2P AC and 2P EC

2.1.1 - Operating diagram

Valves

Fan

Setpoint 



Continuous ventilation

2.1.2 - Setting the temperature setpoint

 



The room temperature is the default display.

THERMOSTAT V6 EN-6

2 - OPERATION

2.1.3 - Water temperature measurement





Clamping collars Sensor adapter

Sensor

Water inlet pipe

Insulation

Sensor

Valve actuator Two-way valve

The changeover sensor measures the surface temperature of the pipe. There is obviously a dierence between

the actual water temperature and this surface temperature.



2.1.4 - Operating algorithm for automatic mode change (changeover)



Function Parameter 01 value CO function operation

Manual CO

Without CO sensor



Therefore the user must select the heating or air conditioning function.

WARNING: if the demand does not correspond to the water temperature, correct

operation cannot be guaranteed (e.g. heating demand with cold water in the pipes).

Air conditioning only mode

Without CO sensor





conditioning and ventilation only modes with manual speed.

Heating only mode

Without CO sensor



The user can no longer switch to air conditioning mode manually. S/he can only switch



Automatic CO

With CO sensor

In this mode, the CO sensor is required





-

-

If the water temperature does not correspond to the demand, the thermostat stops the fan

and closes the valve.







the thermostat no longer complies with the temperature setpoint.

 pictograms.

If the CO sensor is disconnected, the 

sensor.

EN-7 THERMOSTAT V6

2 - OPERATION

2.1.5 - 2P conguration



simultaneously for 5 seconds until 01 is displayed at the top right of the screen.



Parameters Description Setting range Default setting

01 



2 heating pipes only

2 cooling pipes only





Manual CO

02 Select the 2 operating modes

0: comfort/OFF mode

1: comfort/ECO mode

2: comfort/Frost Protection

0: comfort/OFF mode

03 

ECO setpoint 2 °C ~10 °C 5 °C

04 Frost protection mode setpoint 5 °C ~10 °C 8 °C

05  -8 °C ~8 °C 0

06  5 °C ~35 °C 35 °C

07 Minimum comfort setpoint 5 °C ~35 °C 5 °C

08 Low speed and valves hysteresis 0,5 °C ~3 °C 1 °C

10  NO/NC NO

11 Permanent ventilation selected S: Stop

 NS

12  

 0

13 Water temperature value Read-only

14 Hot water detection threshold for CO 30 °C ~ 80 °C 35 °C

15 Cold water detection threshold for CO 5 °C ~ 35 °C 18 °C

17(1) Low speed voltage 0-100 % of 10 V 30 %

18(1) Medium speed voltage 0-100 % of 10 V 60 %

19(1) High speed voltage 0-100 % of 10 V 90 %

20  0~100 20 %

21 Reset default values 

22 Software version 1

23 Software version 2

 

P19

P08

P08 P08

P11

1 °C 1 °C

P08

P18

P17

THERMOSTAT V6 EN-8

2 - OPERATION

2.2 - 4P AC and 4P EC

2.2.1 - Operating diagram

Valves

Fan



5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

Air conditioning setpointHeating setpoint

Continuous ventilation

2.2.2 - Setting the temperature setpoints:

 



 

The dierence between the 2 setpoints depends on parameter 16 (see § 4P conguration). So, if P16 = 5 °C,

the dierence between the 2 setpoints will be at least 5 °C.





■Heating setpoint = 20 °C

■Air conditioning setpoint = 25 °C

■P16 = 5 °C



EN-9 THERMOSTAT V6

2 - OPERATION

2.2.3 - 4P conguration

simultaneously for 5 seconds until 01 is displayed at the top right of the screen.

Parameters Description Setting range Default setting

01 

Heating only

Cooling only

Heating/cooling

02 Select the 2 operating modes

0: comfort/OFF mode

1: comfort/ECO mode

2: comfort/Frost Protection

0: comfort/OFF mode

03 

ECO setpoint 2 °C ~10 °C 5 °C

04 Frost protection mode setpoint 5 °C ~15 °C 8 °C

05  -8 °C ~8 °C 0

06  5 °C ~35 °C 35 °C

07 Minimum comfort setpoint 5 °C ~35 °C 5 °C

08 Low speed and valves hysteresis 0,5 °C ~3 °C 1 °C

10  NO/NC NC

11 Permanent ventilation selected S: Stop

 NS

12  

 0

16 

conditioning setpoints 2 °C ~ 8 °C 5 °C

17(1) Low speed voltage 0-100 % of 10 V 30 %

18(1) Medium speed voltage 0-100 % of 10 V 60 %

19(1) High speed voltage 0-100 % of 10 V 90 %

20  0~100 20 %

21 Reset default values 

22 Software version 1

23 Software version 2

 

P17

P18

P08

P08 P08

P08

P16

P11 1 °C

1 °C1 °C

1 °C

P19

THERMOSTAT V6 EN-10

3 - INSTALLING THE UNIT

Mounting:

■

60 60

Electrical connection:

2P-AC and CO WALL THERMOSTAT

2 PIPES

Live

Neutral

High speed

Medium speed

Low speed

Valve actuator ph.

987 6 5 4 3 2 1

Window detect

HIGH



POWER

SUPPLY

CO SENSOR/



AC 230 V 50/60 Hz

VALVE FAN

LOW

VALVE



SENSOR

W - C

CO sensor



AC 230 V

50/60 Hz



LO.

V1 V2 V3 V4 V5 N L/PhV

ME. HI.

230 V

50/60 Hz

power supply

AC motor speeds

AC motor connection

to unit terminal strip.

AC 230 V 50 / 60 Hz

Unit terminal strip.

Valve actuator

phase.

AC 230 V 50 / 60 Hz

N L

 

EN-11 THERMOSTAT V6

3 - INSTALLING THE UNIT

4P-AC and CO WALL THERMOSTAT

4 PIPES

Live

Neutral

High speed

Medium speed

Low speed

Cold Valve actuator ph.

Hot Valve actuator ph.

9 8 7 6 5 4 3 2 1

LO.

H V1 V2 V3 V4 V5 N L/PhV/C

ME. HI.

Window detect

HIGH



POWER

SUPPLY



AC 230 V 50/60 Hz

AC 230 V

50/60 Hz



N L

VALVE FAN

LOW

C - VALVE

H - VALVE



W - C



230 V

50/60 Hz

power supply

AC motor speeds

AC motor connection

to unit terminal strip.

AC 230 V 50 / 60 Hz

Unit terminal strip.

Valve actuator

phases

AC 230 V 50 / 60 Hz

2P-EC and CO WALL THERMOSTAT

2 PIPES

Live

Neutral

Valve actuator phase

Fan control 0 - 10 V



9 8 7 6 5 4 3 2 1

V- N L/Ph

Window detect

VALVE

Not used

POWER

SUPPLY

CO SENSOR /



AC 230 V 50/60 Hz AC 230 V

50/60 Hz



N L

VALVEFAN

Not used

0 - 10 V



SENSOR

W - C

CO sensor

230 V

50/60 Hz

power supply

Valve actuator phase.

AC 230 V 50 / 60 Hz

Unit terminal strip.

EC motor control.

AC 230 V 50 / 60 Hz

 

THERMOSTAT V6 EN-12

3 - INSTALLING THE UNIT

4P-EC and CO WALL THERMOSTAT

4 PIPES

Live

Neutral

Cold valve actuator phase

Hot valve actuator phase

Fan control 0 - 10 V



9 8 7 6 5 4 3 2 1

V/CH- N L/Ph

C - VALVE

H - VALVE

POWER

SUPPLY



AC 230 V 50/60 Hz AC 230 V

50/60 Hz



N L

VALVEFAN

Not used

0 - 10 V



W - C

Not used

Window detect

230 V

50/60 Hz

power supply

Valve actuator

phases.

AC 230 V 50 / 60 Hz

Unit terminal strip.

EC motor control.

AC 230 V 50 / 60 Hz

 



Beware of cable errors. No. 8 is a window switch, only one potential-free (dry) contact can be connected.

EN-13 THERMOSTAT V6

4 - TECHNICAL SPECIFICATIONS

18 18



60 mm

All dimensions in mm

Power supply 230 V 50/60 Hz Internal sensor NTC 10K, 3950K at 25 °C

Consumption <1 W CO sensor (2P) NTC 10K 3977K at 25 °C

Maximum current for 230 V relays 5 A Temperature measurement range 0~50 °C

Setpoint setting range 5 °C to 35 °C Accuracy ± 1 °C



Maximum cable cross-section 2,5 mm² Relative humidity 85 %

Stripped length 6 mm IP protection IP30

Tightening torque 0,4 N.m Housing ABS, UL94-5

Electrical protection class Class 2 Min./max. cable cross-section 1 - 2,5 mm²

THERMOSTAT V6 EN-14

5 - CONFORMITY



This unit complies with the provisions of the following European

directives:

■

■

■

■



This unit complies with the requirements of:

■

■

■

in Electrical and Electronic Equipment Regulations 2012

■UK REACH Regulations 2019

UK Importer:

■      



6 - TROUBLESHOOTING

Problems Possible solutions

The (2P only) -

-

 -

the parameter menu.

7 - ENVIRONMENTAL PROTECTION



EN-15 THERMOSTAT V6

Carrier S.C.S, Rte de Thil - 01120 Montluel, France. Printed in the European Union.

The manufacturer reserves the right to change the product specications without notice.

The quality management system of the assembly site for this product has been certied as compliant with the requirements of ISO 9001 (latest version) after an audit

conducted by an authorised independent third party.

The environmental management system of the assembly site for this product has been certied as compliant with the requirements of ISO 14001 (latest version) after

an audit by an independent third party.

The occupational health and safety management system of the assembly site for this product has been certied as compliant with the requirements of ISO 45001 (latest

version) after an audit by an independent authorised third party.

Please contact your sales representative for more information.

CIAT V6 User manual

CIAT V6 User manual

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