Belimo EXT-T24-D201 User manual

Installation manual

V1.3 · 09.2017 · Subject to modification

EXT-T24-D201 LCD Temperature Controller

Installation

Dimensions and wiring diagram

2 4 VA C

┴

Inpu t

┴

V +

┴~

Modulating Control

Cooling/ Heating

2-10 V

Input

Remote Sensor

1. Open the back panel with screwdriver. 2. Connect the wires per the wiring diagram.

3. Secure the base with the screws provided. 4. Reattach the front panel.

1. On/ Off

2. Setpoint

Press “ ” button to display the set point, press “ ” to reduce the setpoint, press “ ” to increase the

setpoint, the setpoint step is 0.5°C, the setpoint will be confirmed automatically after 5 seconds.

3. Mode With thermostat on, press “ ” to change the working mode – Cooling “ ”，Heating “ ”.

4. Sleep mode Press “ ” button for 3 seconds till “ ” display, there is a number of count down in the center of LCD.

Use “ ” or “ ” to adjust the desired sleep time: the max. = 48 hours; thermostat will return to the

working status after 5 seconds, “ ” is flashing to start counting down. The setpoint should be replaced

by the sleep setpoint.

When thermostat get into Sleep function, “ ” will flash, press “ ” or “ ” to quit.

5. Exit setup menu

6. Keypad lock Press “ ” and “ ” for 10 seconds till to “ ” display to activate, under this function, any keypad is

locked. Press “ ” and “ ” for 10 seconds till “ ” disappear to quit the function.

Setup menu

Press “ ” buttons to turn on; press “ ” again to turn off.

7. Backlight Press “ ” to activiate the backlight. Avoid pressing “ ”, “ ” or “ ” to activate backlight as it will

change the setting at the same time.

V1.3 · 09.2017 · Subject to modification

EXT-T24-D201 LCD Temperature Controller

Parameter setting

Parameter table

With thermostat off, press “ ” for 10 seconds to enter menu to set the parameters. It will confirm itself 20 seconds later after setting and

return to Off state.

D e sc rip tio n

D e fa u lt

R a ng e

S te p

P ow er on sta tu s (0 : O ff; 1 : O n ; 2 : Last status)

0 - 2

2-3

N/A

S e ns o r s ele ctio n (0 : In te rn al; 1 : R e m o te )

0 - 1

Tem perature fo rm at (0 : C elsius; 1 : Fahren h eit)

0 - 1

0.1

Tem perature calibra tion

-2 0 .0 -

﹢

20.0

0.1

M in im u m se tp oin t

5℃/41 ℉

0 - 99.5

0.5

M a xim u m se tp oin t

35℃/96 ℉

℉

0 - 99.5

0.5

N/A

H e a tin g & A u to s le e p s e tp o in t

7℃/45 ℉

0 - 99.5

0.5

C o olin g sle ep s etp oin t

28℃/82 ℉

℉

0 - 99.5

0.5

N/A

In pu t S ig na l M o de

0: Inva lid

1: N/A

2: th e rm ostat will be slee p witho u t in p u t signal

3: th e rm ostat will be O ff with ou t inp u t signal

2 0 - 3

H e atin g integral tim e

90 sec.

10 - 300 sec.

10 sec.

C o olin g integral tim e

90 sec.

10 - 300 sec.

10 sec.

Valve m o de (0 : M o du latio n ; 1: O n /O ff)

0 - 1

V alve sta tu s a s tu rn o ff (0 : C lo se ; 1 :H o ld ; 2 : O p en )

0 - 2

Valve M o du latio n dire ction(0 :10 V O p en ; 1 :1 0V C lo se )

0 - 1

Valve M o du latio n m in im u m s ig na l

1 B it 0-128Bit (5V /10m A) 0.04V /B it (0.08m A /Bit)

Valve M o du latio n p ro po rtio na l

1 - 20

0.5

21-22

Switch

There is a 5-pole DIP sw itch o n P C B . The m ea ning is be lo w :

Location

Pole

Default value

Valve Modulation - 20m A or 0- 20mA

O ff

Valve Modulation 2- 10VDC or 0 - 10VDC

O n

N/A N/A

N/A

ON DIP

2345

ON DIP

2345

23 Port2 Modulation proportional 2 1 - 20 0.5

24-27 N/A

Note:

Keep last status of Parameter 20: If Parameter 20 is reset to valule other than default “2” and the value needs to keep upon power reset,

Parameter 23 is needed to set to the same value as Parameter 20.

EXT-T24-D201 LCD Temperature Controller

V1.3 09. 2017 · Subject to modification

External sensor

The performance specifications above are nominal and subject to tolerances and application variables of generally acceptable industry standards.

Belimo shall not be liable for damages resulting from misapplication or misuse of its products.

Table 1 - Resistance versus Temperature

The probe type sensor is included in the

EXT-T24-D201 temperature controller.

Specifications

Sensing Element NTC Thermistor, 10 kΩ@25ºC, See Table 1 for Characteristics

Range

Maximum Length of Connecting Wires 1.5 m

Ambient / Storage Temperature Limits -10°C...40°C (avoid air corrosion or sunlight)

Dimensions See Fig. 1: Dimensions in mm

Temperature

°C

Resistance

Temperature

°C

Resistance

Temperature

°C

Resistance

32116

26399

25150

23965

22842

21776

20764

19783

11939

11418

10921

10418

10000

9571

9164

8775

8405

8052

7716

7396

7090

6798

6520

6255

6002

5760

5529

5309

Temperature

°C

Resistance

18892

18026

17204

16423

15681

14976

14306

13669

13063

12487

-40°C...105°C

Ambient / Storage Humidity ≤75% RH

30570

29105

Fig. 1

2651 26 # 105ºC white double row wire

1500±10

5±1

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