Delta T1D DIGIT User Manual

T1D digit

Digital display differential electronic thermostat

The T1D digit is a differential electronic thermostat designed to control the transfer of a heat transfer
fluid (e.g. hot water) from its collection source to its exchange or storage location.

1) Description

2) T echnical characteristics

3) Mounting

T1D digit is mounted on a DIN rail in an electrical cabinet

• Power supply 230 V ± 10%, 50 Hz

• Insulation class II

• Consumption: 2 VA

• 1 changeover contact output, 5 A, 230 V

• 1 "maximum" difference adjustable from +3.5
°C to +30 °C

• 1 "minimum" difference adjustable from +0.2
°C to +3 °C

• 1 safety setpoint adjustable from
0 (Off) to +90 °C

• 3 probe inputs: NTC type 1000 O at 25 °C

• Digital display (measured temperatures, output
state)

• Modular case: 3 modules, h = 58 mm

• DIN rail mounting

• Protection index: IP 40

Cat. no. 6150026

8) Probes

The DELTA DORE probe range covers all applications.
These probes are interchangeable:

Self-adhesive projecting ambient temperature probe ..................Cat. no.: 6300003

Built-in projecting ambient temperature probe (Mosaic)..............Cat. no.:6300004

Ambient temperature probe for places of assembly.....................Cat.no.: 6300017

Ambient temperature probe for industrial premises.....................Cat. no.: 6300019

Outdoor probe..............................................................................Cat. no.: 6300001

Ground/piping/blower probe.........................................................Cat. no.: 6300002

9) Guarantee

This thermostat is guaranteed for 3 years from the date of purchase.
This guarantee is applied under the conditions defined in articles 1641 and seq. of the civil code
(France only).
To benefit from the guarantee, you must return your faulty thermostat with the proof of purchase
bearing the date of acquisition.
The guarantee covers the replacement of faulty parts, labour and return carriage to the customer.

The following are excluded from the guarantee :

- Thermostats on which the serial number has been damaged, altered or erased.

- Thermostats that have not been connected or used as indicated on the thermostat or in the
instructions.

- Thermostats modified without prior agreement by the manufacturer.

- Thermostats damaged by impacts.

FRANCE :

Bonnemain - 35270 COMBOURG

Tél. : [phone] - Fax : [phone]

E-mail : [e-mail]

Internet : www.deltadore.com

2690170 Rév.1

10

1 2

3

9
8

4

5

67

Probe inputs

1

Selector switch:

2

User mode/Installer mode
Output state : Lit = On

3

Temperature display

4
5

Scroll button
Changeover relay output

6

Power supply

7

Fault indicator (flashing)

8
9

Modification buttons
Displayed temperature type indicator

10

(On = Setpoint, Off = Measured temperature)

4) Connection

5) Installer commissioning

Place the switch in the PROG position.
Press the or buttons to display the required value.
Press to accept and go to the next parameter.

If the safety setpoint is "Off", setpoint 3 is not displayed.

When all the settings have been defined, the switch

must be

returned to the position.

PROG

6) Use

T1D digit continuously compares the

temperature measured by probe 1 with
the temperature measured by probe 2.

If T° probe 1 - T° probe 2 > maximum
difference the output switches to On.

If T° probe 1 - T° probe 2 < minimum
difference the output switches to Off.

The safety setpoint (e.g.5 °C frost protection) is used to "force"
the output to On in the case where the temperature measured
by probe 3 falls below this setpoint.

User mode

T1D digit continuously displays the measured temperature.

You can display all the measured temperatures
by pressing the button repeatedly:
probe 1, probe 2 or probe 3.

7) Alarm

The "Alarm" warning light flashes to indicate that a fault has occurred.

For clarity, only schematic diagrams are given here. They do not show the protective
devices and other accessories required by the standards.

- The UTE C15-100 standard and good practice must be complied with.

- Connected or adjacent appliances must not generate excessive interference
(directive 89/336/EEC).

Probe 1

NL

Probe 2

12

34

230 V~

230 V~

5A max

50 Hz

NL

7 8 9 1011

Probe 3

56

Probe 1 :Highest temperature

(collection source)

Probe 2 :Lowest temperature

PROG

T1D digit

(storage, e.g. hot water tank)

Probe 3 :Safety temperature (e.g. outside T˚)

Control
(e.g. Circulator)

Minimum
difference

Maximum
difference

123

Temperature

probe 1

Temperature

probe 2

On

Output
state

Off

PROG

Function no. Description

Maximum difference From + 3.5 ˚C to + 30 ˚C in 0.5 ˚C steps

Minimum difference

Safety setpoint From 0 (Off) to + 90 ˚C in 1 ˚C steps

Probe 1 correction

Probe 2 correction

Probe 3 correction

From + 0.2 ˚C to + 3 ˚C in 0.1 ˚C steps

From - 2 ˚C to + 2 ˚C in 0.5 ˚C steps

From - 2 ˚C to + 2 ˚C in 0.5 ˚C steps

From - 2 ˚C to + 2 ˚C in 0.5 ˚C steps 0˚C

Setting Default value

+ 7˚C

+ 2˚C

Off

0˚C

0˚C

Problem

When the measured
temperature is
consulted, the
thermostat displays:

When the measured
temperature is
consulted, the
thermostat displays:

The temperature display is correct,
but the "Alarm" light is flashing.

The probe is cut off

Check the probe or its connection.

The probe is short-circuited

Check the probe or its connection.

There is a problem inside the thermostat

Switch off, then switch on again.
If the problem persists, contact the installer.

Diagnosis / Solution

123

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