User`s Guide
Contents
1. C The default setting is 95 C 2 4 Tpmin Minimum temperature level of the solar panel It can be adjusted in the range between 20 and 50 C The default setting is 40 C 2 5 TPmax maximum allowed temperature of the solar panel It can be adjusted in the range between 80 and 110 C The default setting is 105 C 2 6 Tpaerosc defrost temperature level of the solar panel It can be fixed in the range between 0 up to 10 C The default setting is without defrosting 2 7 TDmin minimum water temperature level in the water heater It cannot be adjusted The default setting is 20 C Differential Thermostat DT 3 1 1 operation depends on the temperature sensor states as follows A Normal operation In case of a positive temperature difference At between the solar panel stove and the water tank greater than the set AT of 3 C the pump starts operation thus heating the tank from the panel A timer is being switched on when At gets equal to AT 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 At and AT 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 equal2. button five times more the temperatures 2 2 2 6 will be indicated Next pressing of SELECT button will return you to position 4 1 Inspection of water heater and solar panel temperatures The temperature inspection does not change the current operation of the Thermostat 4 3 Programming of temperatures 2 1 2 6 The digital display will automatically show the temperature mentioned at 2 1 AT after pressing PROGRAM button The temperature indication will start blinking 10 times after second pressing of PROGRAM button The adjustment of the same temperature can be done during the blinking time by repeatedly pressing of the SELECT button within the possible adjusted range If until the 10 blink SELECT button is not pressed or PROGRAM button is pressed the last blinking value will be accepted as adjusted one concerning the relevant temperature If you want to make some corrections concerning just adjusted temperature you need to press PROGRAM button again thus returning to above mentioned actions You can go to next temperature programming by pressing SELECT button The Thermostat will go into start mode after you finish with programming of all temperatures from 2 1 2 6 and the new adjusted values will become current After the adjustment of temperature 2 6 you can return to 4 1 Inspection of water heater and solar panel temperatures by pressing SELECT button V Emergency alerts 5 1
3. Indication Alarm The light indication Alarm will be activated in the following cases When the water heater temperature exceeds Tbpmax When the temperature of the solar panel is above Tpmax or bellow TPaetros in case a defrost mode is allowed 5 2 The solar panel and water heater temperatures are out of preliminary fixed ranges When one of the temperatures is grater than 120 C on the digital display is being indicated Hi When one of the temperatures is lower than 20 C on the digital display is being indicated Lo VI Wiring Pt1000 o 0060 O o 00 00 even of the controller i A w7 _ m a Start Stop The wiring comprises the connection of temperature sensors a power supply and the circulation pump according Figure 2 The sensors are Pt1000 non polar If necessary the length of connection cables can be prolonged considering the total resistance of both cables concerning indication sensibility of 1 C 4Q The recommended cable length which do not affect to measurement precision is up to 100m Terminals 7 and 8 are input for Pt1000 solar panel sensor Terminals 9 and 10 are input for Pt1000 water tank sensor To terminals 1 and 2 are to be connected respectively phase and neutral from the power supply The pump is to be connected to terminal 3 and 4 which are respectively neutral and phase Caution In order to discharge the static electricity whic
4. force in order to provide the solar panel cooling The previous mentions will be done despite of the water heater temperature can exceed Wb If at the previous mentioned emergency case the water heater temperature reaches its maximum allowed temperature level Tbmay the circulation pump will be stopped despite of this state can causes overheating of the solar panel In this way the temperature at the water heater as an overheating protection has a higher priority compare to the temperature of the solar panel stove D Water tank and solar panel protection When the water tank temperature Tb is above the assigned one Wb and in the same time is grater than the solar panel temperature in terms of preventing water tank overheating the circulation pump will be switched on Its operation goes on until the water tank temperature Tb is being decreased to the assigned one Wb In this case the water tank gives the excessive heat as it cool itself through the solar panel When a combine heating with electrical heating elements is being used then the assignation of the of the electrical part is to be a little bit lower than Wb 2 III Front panel indications On the front panel are located all elements for control and programming These are three digital display ten light indications and two buttons SELECT and PROGRAM The front panel vision is shown on Figure 1 bellow INTIEL ii dT 23 ec oc 050r Oc Sel gt T 37 87
5. 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 At gt AT 3 and T6 lt W6 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 The water tank heating by means of electrical heating elements is allowed if there are no conditions for heating from the solar panel the water tank temperature is 15 C lower than the adjusted one Wb and 10 minutes have passed since the pump has not been worked The water tank heating by means of the the electrical heating elements is prohibited in case of activated vacation mode B 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 C 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 C Emergency operation If during water heater warming the solar panel stove temperature exceeds Tpmax the circulation pump will be switched on by
6. INTIEL THE ELECTRONICS ON YOUR SIDE Programmable Differential Thermostat TD 3 1 1 User s Manual AIII I DEES INTIEL Far 9 0 Ar Sel 4A VW L2 2 4 EET amp O amp 0000900 Cc as e u tel 00359 596 333 66 Ill fax 00359 596 325 80 Ill info intiel com Ill www intiel com 9 Peter Beron Str Pomorie 8200 Bulgaria I 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 AT At adjusted and current real difference between the water heater and solar panel temperatures AT can be adjusted in the range of 2 up to 20 C The default setting is 10 C 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 C The default setting is 60 C 2 3 Tbmax maximum allowed water heater temperature It can be adjusted in the range between 80 and 100
7. h could appear on electrical the solar panels as well their metal supports a ground connection is to be heating provided Otherwse there is dangerous of damage concerning the sensors Terminals 5 and 6 are an independent contact which provides start stop signal to the electrical heating elements VI Hydraulic connections A Domestic hot water preparation onlv bv solar panels Differential Thermostat Temperature sensor solar panel Boiler Temperature sensor Circulation Pump B Domestic hot water preparation by means of solar panels and electrical heating elements of the water tank Temperature sensor Solar panel Differential Thermostat Boiler Temperature sensor Circulation Pump ZIE Electrical heating element switch PT water tank operation thermostat BT water tank emergency blocking thermostat C Domestic hot water preparation only by means of a stove and a magnetic ON OFF valve installed at the water tank Temperature Differential enti Thermostat Boiler Magnet Valve Temperature sensor Kettle A T lan gt u D Domestic hot water preparation by means of a stove and electrical heating elements of the water tank Temperature sensor Differential Thermostat Circulation Pump Temperatu re sensor Kettle Electrical heating element switch m Central heating Cal m erm PT water tank operat
8. hid 1008 Prg f I Ox G Fig 1 Indications on the digital display Tb shows the water heater temperature Tp shows solar panel temperature AT shows the adjusted temperature difference between the solar panel and the water heater Wb shows the water heater temperature level which has to be kept TDmax shows the maximum allowed water heater temperature Tpmin shows the fixed minimum temperature level of the solar panel Tpmax shows the adjusted maximum temperature level of the solar panel Tpaefrost Shows the adjusted temperature level for solar panel defrosting Pump shows the circulation pump operation Heater Electrical heater is ON Alarm shows emergency operation p LB D N O O E IV Programming The Thermostat automatically goes into start mode after connection to the power supply showing the water heater temperature 4 1 Inspection of water heater and solar panel temperatures When the Thermostat is not in program mode by consecutively pressing of SELECT button the digital display indication is being switched over between the water heater temperature and the solar panel one activating their relevant indications Tb or Tp 4 2 Inspection of temperatures mentioned at points 2 1 2 6 see II Operation page 2 After pressing PROGRAM button the digital display will automatically show the temperature mentioned at 2 1 AT Then after pressing SELECT
9. ion thermostat bT water tank emergency blocking thermostat Technical data Supply voltage 230V AC 50 60Hz Maximal rated current 3A 250V AC 50 60Hz Outputs 2 standard relay Switch on difference AT 2 20 C adjustable Sensors 2 temperature sensors Pt1000 50 mo 200 C Sensor current 1 mA Range of temperature measuring from 20 up to 120 C Digital display Three positional Measurement precision 1 C Humidity 0 80 Protection IP20 VIL 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
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