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INTIEL DT-3.1 Programmable Differential Thermostat User Manual

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INTIEL

THE ELECTRONICS ON YOUR SIDE

Programmable Differential Thermostat

DT-3.1

User’s Manual

І. Application

Programmable Differential Thermostat DT-3.1 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, this 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. 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 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.

В) VACATION Mode - The current mode is useful in case of not using the water tank for a long time. In case of the mode

activation the adjusted temperature is being automatically set to 40 °С, as the heating elements switching on is not allowed. The

pump is being switched on when it is necessary in order to prevent the overheating of the tank or the solar panel. The mode can

be activated by means of pressing “PROGRAM” button for 3 seconds, as after its releasing on the display appears ON/OFF

indication. When activated, the indication flashes “HOL”.

В) Emergency operation

- If during water heater warming the solar panel (stove) temperature exceeds Tp_max, the circulation pump will be

switched on by force in order to provide the solar panel cooling. The previous mentions will be done despite of the water heater

temperature can exceed Wb.

VIEW FULL SCREEN PDF MANUAL

General	Details
Name	INTIEL DT-3.1 Programmable Differential Thermostat User Manual
Make	INTIEL
Language	English
Filetype	PDF (Download)
File size	0.18 MB

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INTIEL Instructions & User Manuals

INTIEL TD-3.1.1 Programmable Differential Thermostat User Manual

Get the free PDF manual for the INTIEL DT-3.1 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 DT-3.1 Differential Manual: Questions and Answers

Intiel DT-3.1 Differential specifications

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

Full specifications, page 5

What does HOL mean on Intiel DT-3.1 display?

Flashing HOL indicates VACATION Mode is active. In this mode the thermostat sets temperature to 40°С and prevents electrical heating elements from turning on. User Manual, p. 1

What happens if solar panel temperature exceeds maximum on Intiel DT-3.1 Differential?

The pump forces on to cool the solar panel, regardless of whether water tank temperature has reached the target setting Wb. User Manual, p. 1

How long is the warranty period on the Intiel DT-3.1?

24 months from purchase or installation, but not more than 28 months after the production date. User Manual, p. 5

Intiel DT-3.1 Differential compared with other room thermostats

Specification	Intiel DT-3.1 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)