Intiel TD-3 User manual

INTIEL
THE ELECTRONICS ON YOUR SIDE
Electronic Differential Thermostat
TD-3
User’s Manual
tel.:[phone] ||| fax:[phone] ||| i[email protected] ||| www.intiel.com
9 Peter Beron Str, Pomorie 8000, Bulgaria

І. Application
The Electronic Differential Thermostat DT-3 is designed to control the operation of the circulation pump and
electrical heating elements of the water heater in relation to the temperature difference between the solar panel (fireplace) and
the water heater.
ІІ. Elements for indication, settings and signalization
The main elements for indication, settings and buttons are shown bellow (see Figure 1)
Figure.1
ndications
1 digital display indication
2 indication for a switched on circulation pump
3 indication for a low solar panel temperature
4 button for switching over the digital display indication between solar panel and water heater tempereature
5 button for indication of the adjusted temperature difference between the solar panel and the water heater
6 knob for adjusting the temperature difference between the solar panel and the water heater
ІІІ. Operation
The Еelectronic Differential Thermostat DT-3 controls the solar panel (fireplace) and the water heater temperature by
means of two sensors. f the temperature difference between them is within the range of 2….20
0C (adjusted by means of
element 6, see Figure 1) in favor of the solar panel (fireplace), the circulation pump will start working until both temperatures
will be equalized. The pump operation is being shown by a light indication marked with “pump” symbol (see position 2 of
Figure 1).
When the solar panel temperature is lower than 40 0C, the Differential Thermostat DT-3 will not allow the circulation
pump to operate and that state is being shown by a light indication for a low solar panel temperature (position 3 of Figure 1).
When no one button is pressed the digital dispaly shows the solar panel temperature (fireplace) and after pressing the
button for switching over the digital dispaly state (position 4 of Figure 1) the water heater temperature will be indicated.
The temperature difference (from 2 0 up to 20 0C) can be fixed by pressing the button for indication of the adjusted
temperature difference (position 5 of Figure 1) and by turning the knob for adjusting that temperature difference (position 6 of
Figure 1), thus selecting its value from 2 up to 20 С.
Technical data
Supply voltage: 230V/ АС /50Hz
Maximal rated current of terminals: 10А/250V
nputs: 2 temperature sensors LM335
Outputs: 1 standard relay (changeover contacts)
Switch-on difference: ΔT 2…20 С adjustable
Water temperature that blocks the system: 40 С (2 С)
Range of temperature measuring: от -40 до +100 С
tel.:[phone] ||| fax:[phone] ||| [e-mail] ||| www.intiel.com
9 Peter Beron Str, Pomorie 8000, Bulgaria
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dT
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IV. Installation
The sensors are semi-conductors and polars, type LM335 which can be made longer, taking into account their polarity.
The solar panel sensor has to be mounted in thermal contact with the heated water from the solar panel outlet.
The water heater sensor has to be installed in a thermal contact with the heated water at the lowermost possible place of
the water heater to prevent any impact of the water heater heat-exchanger operation. t has not to be installed on the water
heater inlet pipe or close to it.
Attention! n order to obtain better results with the sensors, place them in immersion pockets. n case you do not have
immersion pockets you can install the sensors directly on the pipes, wrapping them with an insulation tape.
V. Wiring schemes
А) Domestic hot water preparation only by a solar panel
B) Domestic hot water preparation by a solar panel and water heater electrical elements
OТ – water hetaer operation thermostat
BТ – water heater safety (blocking) thermostat
tel.:[phone] ||| fax:[phone] ||| [e-mail] ||| www.intiel.com
9 Peter Beron Str, Pomorie 8000, Bulgaria
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Solar panel
sensor
Water
heater
Circulation
pump
Water heater
sensor
Solar
panel
LNPE
L
N
PE
++
_ _
Differential
Thermostat DT-3
Solar panel
sensor
BТ
OТ
Circuit closer for switching
on the water heater electrical
heating elements
Water
heater
Circulation
pump
Water heater
sensor
Solar
panel
LNPE
L
N
PE
++
__
Differential
Thermostat DT-3

C ) Domestic hot water preparation by a fireplace and a motor actuator “open – close” for the water heater.
D ) Domestic hot water preparation by a fireplace and water heater electrical elements.
OТ – water heater operation thermostat
BТ – water heater safety (blocking) thermostat
tel.:[phone] ||| fax:[phone] ||| [e-mail] ||| www.intiel.com
9 Peter Beron Str, Pomorie 8000, Bulgaria
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Fireplace
sensor
Fireplace
Heating
N
PE
L2
L1
м
Water heater sensor
Water
heater
Open
Close
+
+
-
-
Differential
Thermostat DT-3
L
N
PE
Pump –
heating
Circuit closer for switching
on the water heater electrical
heating elements
OТ
BТ
LNPE
Fireplace
sensor
Fireplace
Heating
Pump –
heating
Water heater sensor
Water
heater
+
+
-
-
Differential
Thermostat DT-3
L
N
PE

VІ. Warranty
The warranty period is 24 months following the purchase date of the unit or its installation by an authorized
Engineering Company, but not exceeding 28 months after the production date. The warranty is extended to the malfunctions
that occur during the warranty period and are result of the production reasons or defective used parts.
The warranty does not relate to malfunctions corresponding to not-qualified installation, activities directed to the
product body interference, not regular storage or transport.
The repairs during the warranty period can be done after correct filling of the manufacturer warranty card
Warranty Card
Manufacturer: INTIEL
Product type Differential Thermostat DT-3
Production number
Production date
Dealer confirmation
Purchase date
Invoice number
Dealer’s name, address and stamp
Seller’s name and signature
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9 Peter Beron Str, Pomorie 8000, Bulgaria
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