INTIEL TD-3.1.1 Programmable Differential Thermostat User Manual

1

2

3

4

5

6

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

Download PDF

(1 votes, average: 5.00 out of 5)

Loading...

• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• INTIEL

INTIEL TD-3.1.1 Programmable Differential Thermostat User Manual Overview

Summary of Contents

• Page 1: Programmable Differential Thermostat DT-3.1.1 is used for domestic hot water preparation in water heaters. It is designed to control the circulation pump operation between the solar panels and the water heater. The thermostat has two temperature sensors mounted in the boiler and solar panels. The adjusted and current difference between the water heater and solar panel temperatures can be set between 2 to 20°C. The adjusted temperature level of the water heater can be set between 30 and 90°C. The maximum allowed water heater temperature can be adjusted between 80 and 100°C. The minimum temperature level of the solar panel can be set between 20 and 50°C. The maximum allowed temperature of the solar panel can be adjusted between 80 and 110°C. The defrost temperature level of the solar panel can be fixed between -20 to 10°C. The operation depends on the temperature sensor states, including conditions for pump operation and heating priorities.
• Page 2: Heating with electric heaters is allowed until the set temperature is reached without considering the pump condition. Heating with electric heaters is prohibited when the vacation mode is activated. Vacation mode automatically sets the adjusted temperature to 40 °C, and the heating elements are not allowed to switch on. The pump operates to prevent overheating of the tank or solar panel during vacation mode. In emergency operation, if the solar panel temperature exceeds the maximum, the circulation pump will activate to cool the panel. The water heater temperature takes priority over the solar panel temperature in emergency situations. The pump will operate to cool the boiler if the water heater temperature exceeds the set level and there is no hot water consumption. When combined heating with electric heaters is used, their settings must be lower than the water heater's set temperature. The front panel includes three digital displays, ten light indications, and two buttons for control and programming. The digital display shows various temperature readings and operational statuses, including water heater temperature and circulation pump operation.
• Page 3: IV. Programming The thermostat automatically goes into start mode after connection to the power supply, showing the water heater temperature. When the thermostat is not in program mode, the digital display indication is switched over between the water heater temperature and the solar panel temperature. After pressing the PROGRAM button, the digital display will automatically show the temperature mentioned at 2.1 - ∆T. The adjustment of the temperature can be done during the blinking time by repeatedly pressing the SELECT button. The thermostat will go into start mode after you finish programming all temperatures from 2.1 - 2.6. For quick change of selected value, hold the SELECT button. V. Emergency alerts The light indication Alarm will be activated when the water heater temperature exceeds Tb max. The digital display indicates Hi when one of the temperatures is greater than +120°C. The digital display indicates Lo when one of the temperatures is lower than -20°C. VI. Wiring The wiring comprises the connection of temperature sensors, a power supply, and the circulation pump. The recommended cable length that does not affect measurement precision is up to 100m. Caution: A ground connection is to be provided to discharge static electricity that could appear on the solar panels.
• Page 4: Hydraulic connections Domestic hot water preparation only by solar panels Domestic hot water preparation by means of solar panels and electrical heating elements of the water tank Water tank operation thermostat Water tank emergency (blocking) thermostat
• Page 5: Domestic hot water preparation only by means of a stove and a magnetic ON/OFF valve, installed at the water tank. Domestic hot water preparation by means of a stove and electrical heating elements of the water tank. Water tank operation thermostat. Water tank emergency (blocking) thermostat.
• Page 6: Supply voltage: 230V / AC / 50-60Hz Maximal rated current: 3 A / 250V / AC / 50-60Hz Outputs: 2 standard relay Switch-on difference: ΔT 2…20°C adjustable Sensors: 2 temperature sensors Pt1000 (-50° to +200°C) Range of temperature measuring: from -20 up to +120°C Digital display: Three positional Measurement precision: 1°C Warranty period is 24 months following the purchase date of the unit. The warranty does not relate to malfunctions corresponding to not-qualified installation.