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INTIEL TD-3.1.1 Programmable Differential Thermostat User Manual

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INTIEL

THE ELECTRONICS ON YOUR SIDE

Programmable Differential Thermostat

TD-3.1.1

User’s Manual

І. Application

Programmable Differential Thermostat DT-3.1.1 is used for domestic hot water preparation in water heaters, where the

heating energy is provided in combined way, by solar panels (fireplace) and electrical heating elements. It is designed to control

the circulation pump operation, installed in the water circuit between the solar panels (fireplace) and the water heater

serpentine, thus regulating the heat exchanging between them.

II. Operation

The thermostat has two temperature sensors mounted respectively in the boiler and solar panels. During an operation the

thermostat monitors the following parameters:

2.1. ∆Т, ∆t – adjusted and current (real) difference between the water heater and solar panel temperatures. ∆Т can be

adjusted in the range of 2 up to 20°С. The default setting is 10°С

2.2. Wb – adjusted temperature level of the water heater to which it can be heated from the solar panels. The

temperature can be adjusted in the range between 30 and 90°С. The default setting is 60°С.

2.3. Tb_max– maximum allowed water heater temperature. It can be adjusted in the range between 80 and 100 °С. The

default setting is 95°С.

2.4. Tp_min– minimum temperature level of the solar panel. It can be adjusted in the range between 20 and 50 °С. The

default setting is 40°С.

2.5. Tp_max– maximum allowed temperature of the solar panel. It can be adjusted in the range between 80 and 110°С.

The default setting is 105°С.

2.6. Tp_defrost– defrost temperature level of the solar panel. It can be fixed in the range between -20 up to 10°С. The

default setting is “- -“, without defrosting.

2.7. H (Thset) - set temperature in the boiler, up to which it can be heated by electric heaters. It is set in the range from

5 to Wb-5 ° С. Default setting 45 ° C;

2.8. Pr - priority of heating the boiler by electric heaters.

2.9. tc - delayed cooling time of the boiler. It is set in the range from 0 to 5 hours. Default setting 0.

2.10. Tb_min– minimum water temperature level in the water heater. It cannot be adjusted. The default setting is 20°С

Differential Thermostat DT-3.1.1 operation depends on the temperature sensor states, as follows:

А) Normal operation

- In case of a positive temperature difference Δt between the solar panel (stove) and the water tank, greater than the set

ΔT of 3 ° C, the pump starts operation, thus heating the tank from the panel.

A timer is being switched on when ∆t gets equal to ∆T, as from this moment the controller counts 10 minutes of

circulation pump operation. That time can vary within above range of 10 minutes as decreasing the difference between ∆t and

∆T to 0 relates to less operation time of the pump, which the device count automatically. The pump operation stops if the

previous mentioned difference becomes 0 or less than 0.

- Heating the water tank under the above conditions can be made only until the temperature in the water tank gets equal

to the set one Wb, then the pump switches off, stopping the heating.

- If the above conditions are fulfilled, and the solar panel (stove) temperature falls below Tpmin, the pump stops, even

the following conditions ∆t>∆Т+3° and Тб< Wб are fulfilled.

- If the temperature of the panel falls below Tpdefrost the pump is being switched ON, although it has been switched off

because solar panel temperature is below Tpmin.

- Heating the boiler with electric heaters. By setting Pr, the heating priority is selected as follows:

0 - heating with electric heaters is disabled;

1 - heating with electric heaters is allowed when there are no conditions for heating from the panel, the temperature in

the boiler is lower than Thset and 10 minutes have passed during which the pump has not worked.

VIEW FULL SCREEN PDF MANUAL

General	Details
Name	INTIEL TD-3.1.1 Programmable Differential Thermostat User Manual
Make	INTIEL
Language	English
Filetype	PDF (Download)
File size	0.17 MB

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INTIEL Instructions & User Manuals

INTIEL DT-3.1 Programmable Differential Thermostat User Manual

Get the free PDF manual for the INTIEL TD-3.1.1 Programmable Differential Thermostat User Manual and access setup steps, usage instructions, and troubleshooting tips. 👉 View online or download now to keep your thermostat running smoothly!

Intiel TD-3.1.1 Differential Manual: Questions and Answers

Intiel TD-3.1.1 Differential specifications

Power supply	230V / / 50-60Hz
Accuracy	1°
Humidity	0-80%

Full specifications, page 6

Can the Intiel TD-3.1.1 Differential work with 110V power supply?

No. The unit requires 230V AC at 50-60Hz.

What does ∆T mean on the Intiel TD-3.1.1 Differential thermostat display?

The adjusted temperature difference between the water heater and solar panel. When the real difference exceeds this by 3°C, the pump starts. User Manual, p. 1

What do the temperature sensor abbreviations Wb, Tbmax and Tpmin stand for?

Wb is the target water heater temperature. Tbmax is its maximum allowed temperature. Tpmin is the minimum solar panel temperature.

Abbreviation	Meaning
Wb	Target water heater temperature from solar panels
Tbmax	Maximum allowed water heater temperature
Tpmin	Minimum solar panel temperature

User Manual, p. 1

What does the Pr setting control on the Intiel TD-3.1.1?

Priority determines whether electric heater heating is disabled or allowed only when solar heating conditions aren't met and 10 minutes pass without pump operation. User Manual, p. 1

Intiel TD-3.1.1 Differential compared with other room thermostats

Specification	Intiel TD-3.1.1 Differential	BECA BHP-8000	BECA BHT-6000	BECA BHT-7000
Power supply	230V / / 50-60Hz	24VDC/AC ±10%	95 ~ 240 VAC, 50 ~ 60HZ	95 ~240 VAC, 50~60Hz or 24V DC/AC, 50~60Hz
Accuracy	1°	±1℉	±0.5℃ or ±1℉	±1°C
Humidity	0-80%	5~95%RH(Non Condensing)	5 ~ 95 % RH (Non Condensing)	5 ~ 95 % RH (Non Condensing)