Installation and Operating Manual

TK-SC6

System Regulator for Solar Thermal Systems

Solar Controller

Installation and operation instruction

Display Panel Illustration

Pos. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Button on display panel Green lamp On/Off adjust T Manual

OK C/F SET Pipe timing Recovery Temp. Display Clock Heating LCD display screen

Button description Power indication lamp Power switch on/off button Adjusting button To Set switch-on/off temperature difference of solar circulation Manual commissioning to trigger temperature difference controlled solar circulation Activate/deactivate one function Celsius / Fahrenheit transformation button To set time for hot water pipe circulation To recovery the display to factory set mode. Display temperature in different position one by one Clock set Electrical heating time set Transfer button

Solar Controller

Installation and operation instruction

Content
1. Safety information 1.1 Installation and commissioning 1.2 About this manual 1.3 Liability waiver 1.4 Description of symbols 2. Installation 2.1 Installation of display panel 2.2 Installation of controller 2.2.1 Fixing the hang panel of controller 2.2.2 Connection of power Open/close the cover of terminal panel Preparing before connection Terminal connection 3. Commissioning 3.1 Time set 3.2 Manual operation 3.3 Temperature query 4. Device setup 4.1 Clock set 4.2 On/Off button operation 4.3 System description 4.4 Temperature difference controlling function 4.5 Temperature controlled auxiliary heating during three time sections 4.6 Time controlled hot water pipe circulation 4.7 Temperature controlled hot water pipe circulation 4.8 Anti freezing protection of collector 4.9 High temperature protection function of tank ( 1) 4.10 High temperature protection function of tank ( 2) 4.11 oC/F button 4.12 Auto function 5. Troubleshooting 5.1 Trouble protection 5.2 Error signal indication 5.2 Trouble checking 6. Technical data

Solar Controller

Installation and operation instruction

1. Safety information
1.1 Installation and commissioning When laying cables, please ensure that no damage occurs to any of the constructional fire safety measures presented in the building. The controller must not be installed in rooms where easily inflammable gas mixtures are present or may occur. The permissible environmental conditions must not be exceeded at the site of installation. Before connecting the device, make sure that the energy supply matches the specifications of controller All devices connected to the controller must conform to the technical specifications of the controller. All operations on an open regulator are only to be conducted cleared from the power supply. All safety regulations for working on the power supply are valid. Connecting and /or all operations that require opening the regulator (e.g. changing the fuse) are only to be conducted by specialists. 1.2 About this manual This manual describes the installation, function and operation of a solar thermal controller. When installing the remaining components e.g. the solar collectors, pump assemblies and the storage unit, be sure to observe the appropriate installation instructions provided by each manufacturer. Installation, electrical connection, commissioning and maintenance of the device may only be performed by trained professional personnel. The professional personnel must be familiar with this manual and follow the instructions contained herein. 1.3 Liability waiver The manufacturer cannot monitor the compliance with these instructions or the circumstances and methods used for installation, operation, utilization and maintenance of this controller. Improper installation can cause damages to material and persons. This is the reason why we do not take over responsibility and liability for losses, damages or cost that might arise due to improper installation, operation or wrong utilization and maintenance or that occurs in some connection with the aforementioned. The manufacturer preserves the right to put changes to product, technical date or installation and operation instructions without prior notice. As soon as it becomes evident that safe operation is no longer possible (e.g visible damage). Please immediate take the device out of operation. Note: ensure that the device cannot be accidentally placed into operation. 1.4 Description of symbols Safety instruction: Safety instructions in the text are marked with a yellow warning triangle. They indicate measures, which can lead to injury of persons or safety risks. Operation steps: small triangle is used to indicate operation step. Note: contains important information for operation or function, it is written in blue color

Solar Controller

Installation and operation instruction

2. Installation
2.1 Installation of display panel Remove the back panel from display with screw in direction showed on picture 1 Fix the back panel with screw on the wall, please note dont drill hole on controller, see picture 2 Insert the upper case of display into the grooves of back panel, fasten them, see picture 3

Fixing hole

Picture 1

Picture 2

Picture 3

2.2 Installation of controller NoteController must only be installed in a place having an adequate level of protection. 2.2.1 Fixing the hang panel of controller selecting a proper place putting hang-panel on wall and marking the position of hole (note the up/down side of panel) see picture 4 drilling-hole and put the plastic expansion screw in it Screw hang-panel hanging the controller on this panel reliably

2.2.2 Connection of power

Picture 4

Remove the device from the mains supply before opening the case! All guidelines and regulations of the local electricity supplier must be observed Open and close the cover of terminal panel Loosen the screw direction, see picture 5 Close the cover : downwards close the cover fasten with screw and remove the upper case in an upwards

Picture 5

Solar Controller

Installation and operation instruction

Preparation before connection Power can only be switched on when the housing of controller is closed, an installer must make sure that the IP protection class of the controller is not damaged during installation. Depending on the type of installation, the cables may enter the device through the rear of the case or through the lower side of the case. See picture 6 Cable comes from the rear using an appropriate tool. Cable comes from the below: cut the left and right plastic flaps using an appropriate tool (e.g. knife) and break them out of the case. After connection the cable, please put the cable into groove and fix them by cable press plate. Terminals connection ( see picture 7) Picture 6 : remove the

plastic flaps from the rear side of the case

Picture 7 Abbreviation T1 T2 T3 T4 No:01 Power Heating Ton/ Toff Pipe circuit Function Input port of collector temperature sensor T1 Input port of tank temperature sensor T2, bottom Input port of tank temperature sensor T3, above Input port of hot water pipe temperature sensor, optional Connection port for display panel Power input port Output port of electrical heating H1 Output port of temperature difference circulation pump P1 Output port of hot water pipe circulation pump P2

Solar Controller

Installation and operation instruction

Input ports 1. Inputs T1, T2 and T3 (T4 optional): are temperature sensors. 2. Inputs No:01 is 3-core wire connected with display.

Output ports 1. Outputs P1 and P2: electromagnetic relays max. Switching current: 5A 2. Output H1: electromagnetic relay, max switching current 16A.

Power connection 1. Please note the type of power supply required from the type label on the case of the device 2. The protective conducting wire (earth wire) must also be connected

Reset: This button is on the terminal connection panel, when system program is out of working, press Reset to recover the program of system to the factory settings. Advice regarding the installation of temperature sensors: Only original factory equipped Pt1000 temperature sensors are approved for use with the collector, it is equipped with 1.5meter silicon cable and suitable for all weather conditions, the temperature sensor and cable are temperature resistant up to 280oC, not necessary to distinguish the positive and negative polarity of the sensor connection. Only original factory equipped NTC10K,B=3950 temperature sensors are approved for use with tank and pipe, it is equipped with 1.5meter PVC cable, and they are temperature resistant up to 105oC, not necessary to distinguish the positive and negative polarity of the sensor connection. All sensor cables carry low voltage, and to avoid inductive effects, must not be laid close to 230 volt or 400-volt cables (minimum separation of 100mm) If external inductive effects are existed, e.g. from heavy current cables, overhead train cables, transformer substations, radio and television devices, amateur radio stations, microwave devices etc, then the cables to the sensors must be adequately shielded. Sensor cables may be extended to a maximum length of ca. 100 meter, when cables length is up to 50m,
2 2 and then 0.75mm cable should be used. When cables length is up to 100m, and then 1.5mm cable

should be used. Note: PT1000 and NTC10K, B=3950 are different kind of temperature sensor, it may exist measuring error between these twos at the same ambient temperature, but it doesnt effect the operation of system.

3. Commissioning
Connect the sensors, pumps to the controller before you connect the power supply! After switching on power to the controller, firstly controller will ask to set clock 3.1 Time set After power is switched on, 00:00 displays on LCD screen. Press Clock button, hour selection area 00 blinks on display screen. Press button to adjust hour of clock Press Clock button again, the minute selection area 00 blinks Press button to adjust minute of clock After 6 seconds controller confirms the setting automatically, the current time is displayed on the screen.
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Solar Controller

Installation and operation instruction

3.2 Manual operation When operating the device first time, or when testing the function, the outputs of controller can be operated manually. To do like the following steps: Temperature difference controlled pump operated manually Press Manual Press Manual T button, temperature difference controlled solar circulation pump is triggered T button again to shut off this output immediately, or program switches off the pump immediately, the relevant signal is lighted. in 10 minutes automatically. Hot water pipe circulation pump operated manually In the status that power is on, press On/Off button, the hot water pipe circulation pump is triggered immediately, The relevant signal is lighted. Press On/Off button again to shut-off this operation, or program stops pump in 3 minutes automatically. Heating operated manually Press Heating button for 6 seconds, the auxiliary electricity heating or gas, oil boiler is triggered. Press Heating button again to shut off this output immediately. 3.3 Temperature query Press Temp. Display button to check different temperature value of collector (T1), tank (bottom T2), tank (above T3) and hot water pipe circulation (T4) one by one. Temperature of bottom tank (T3) is displayed automatically when no more operation within 6 seconds. 4. Device setup 4.1Clock set Press Clock button, the hour selection area 00 blinks on display screen. Press button to adjust hour of clock Press Clock button again, the minute selection area 00 blinks Press button to adjust minute of clock After 6 seconds controller confirms the setting automatically, the current time is displayed on the screen 4.2 On/Off button operation After power is switched-on, as default set controller is in open status, it displays water temperature of tank and clock time, all functional buttons are ready for setting operational parameters. Press On/Off button, 3 minutes water circulation function becomes into affect (hot water pipe circulation pump), circulation signal is indicated on screen, 3 minutes later program stops water circulation pump automatically. Press On/Off button for 3 seconds, controller is closed, only tank temperature and time are displayed on screen. In the status that controller is closed, press this button again, controller reopened.

Solar Controller

Installation and operation instruction

4.3 System description 4.3.1 1 collector array 1 storage tank 1 pump ( 1 sensor on tank)

Description: The solar circuit pump (P1) is triggered immediately when the switch-on temperature difference between the collector array (T1) and the storage tank (T2) is reached. When the temperature difference between the collector array (T1) and storage tank (T2) drops below the switch-off temperature difference, then the solar circuit pump ( P1) is ceased. T1: Temperature sensor for collector T2: Temperature sensor in the bottom part of tank (for controlling temperature difference circulation and auxiliary heating). P1: Temperature difference solar circuit pump P2: Hot water circuit pump Note: H1 is port for connecting with auxiliary electrical heating booster, T4: is temperature sensor positioned on the pipe of user side.

4.3.2 1 collector array 1 storage tank 1 pump (2 sensors on tank)

Description: The solar circuit pump (P1) is triggered when the switch-on temperature difference between the collector array (T1) and the storage tank (T2) is reached. when the temperature difference between the collector array (T1) and storage tank (T2) drops below the switch-off temperature difference, then the solar circuit pump ( P1) is ceased. T1: Temperature sensor for collector T2: Temperature sensor in the bottom part of tank (for temperature difference circulation). T3: Temperature sensor in the top part of tank (for auxiliary heating). P1: Temperature difference solar circuit pump 1 P2: Hot water circuit pump Note: H1 is port for connecting with auxiliary electrical heating booster, T4 is temperature sensor positioned on the pipe of user side. When the sensor T3 (in top part of tank) is damaged, controller will adopt the signal from sensor T2 (in bottom part of tank) to control the electrical heater.

Solar Controller

Installation and operation instruction

4.4 Temperature difference controlling function Functional description: Solar circuit pump P1 is triggered by temperature difference, so long as the preset temperature difference between collector and tank is reached, solar pump is switched on. For example: if we set the switch-on temperature difference is 8 oC, the switch-off temperature difference is 4oC. Then when the temperature in bottom part of tank is 20oC, the collector temperature must rise up to 28oC, pump is triggered, when collector temperature falls below 24oC, pump stops. Important information: the switch-on temperature difference 8oC and the switch-off temperature 4oC are standard system setting according to many years experiences. Only in special application cases it can be changed (e.g. far distance heat transferring), switch-on and switch-off temperature difference are alternating set. Note: to avoid mistake the minimum difference between two temperature differences (Ton - Toff ) is set as 2oC. Setup steps: Press T button, temperature setting area blinks. Press button to adjust switch-on temperature difference. (Adjustable range: 2oC ~ 15oC, default valve is 8oC.) Press T button again. Press button to adjust switch-off temperature difference. (Adjustable range: 0oC ~ (on- 2oC), default valve is 4oC.) After 6 seconds, controller confirms the setting.

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Solar Controller

Installation and operation instruction

4.5 Temperature controlled auxiliary heating during three time sections Functional description: Solar system can be combined with electrical booster or gas, oil boiler; controller can achieve automatically temperature and time controlled heating. During the preset time sections electrical booster is triggered o when the temperature (T3) of top part of tank is 6 C below the preset switching-off temperature of electrical booster. When T3 exceeds or equals the preset temperature, electrical booster stops heating. Note: When it is outside of the preset time section, electrical booster doesnt work automatically even when the tank temperature reaches the start temperature of electrical heating. Setup steps: Press Heating button, timing area blinks on display, you can set turning on time and temperature of electrical heating now, Press button to set hour, Press button to shift to minute setting, Press to set minute. Press again to shift to temperature area, Press to set turning off temperature of electrical heating. Press Heating button again, you can set turning off time of electrical heating. Press button to set hour. Press button to shift to minute setting. Press to set minute. 6 seconds later controller confirms the settings Doing like above described steps, three timing sections can be set. ( 1-3 displays on screen to indicate the preset time section) Default setting: First heating time section: 4:00 turning on, 5:00 turning off Second heating time section: electrical heater doesnt work, setting is 10:00 ~10:00 Third heating time section: 17:00 turning on, 22:00 turning off o Default turning off temperature of electrical booster is 55 C. If you want to shut off heating in one time section, then you can set the turning on time and turning off time same value (for example, the second time section no this function, then you can set turning on time is 10:00, turning off time is 10:00 also). Controller has memory function, your setting is remembered, and you dont need to set everyday. Pressing Heating button can check the setting. Manual operation: Press Heating button for three seconds, electrical heater is triggered immediately, the corresponding signal is lighted, Press Heating button again, electrical booster switches off immediately. Note: when heating signal displays on screen, it means this function is in operation.

Gives an example 1.when no temperature sensor (T3) is installed in the top part of tank or T3 is damaged, controller will take the signal from bottom temperature sensor (T2) automatically and control auxiliary heating function. 2.within one time section of the timing heating, press Heating button to exit the timing heating function of

this time section.

For example: if you set the switch-on time of timing heating is 17:00 and set switch-off time is 06:00, then heating in this time section is ineffective; the right setting is like following:
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Solar Controller

Installation and operation instruction

This setting should be divided into two time sections, the first time section is from 17:00 to 23:59, then second time section is from 00:00 to 06:00. 4.The set switch-on time of heating should be later than the current clocks time, otherwise the setting can not effect in this day. If you set the switch-on time is earlier than the current clocks time, then the heating will be effective in next day. For example: if the current clocks time is 8:00 am and you set the switch-on time of heating is 7:00, switch-off time is 9:00, then heating in current day is ineffective , time heating function will start from next day.

4.6 Time controlled hot water pipe circulation Functional description: Solar system can provide time-controlled hot water pipe circulation function; through this function can realize to get hot water immediately when man opens the tap. This function needs an extra circulation pump (P2), and this pump can be triggered automatically within the preset time section. Within the preset time section pump (P2) operates for three minutes, and then stops for 15 minutes, after then it triggers again for 3 minutes, stops for 15 minutes, same process continues so. Three time sections can be set within one day. Setup steps: Press Pipe timing button, timing setting area blinks, to set the start time of circulation. Press button to adjust hour Press transfer button to minute area Press button to adjust minute Press Pipe timing button again to set the end time of circulation Press button to adjust hour Press transfer button to minute area Press button to adjust minute After 6 seconds, controller confirms setting automatically Doing like above steps. Within one day, three time sections can be set ( 1-3 displays on screen to indicate the preset time section) If you want to shut off one timing circulation, then you can set the turning on time and turning off time same value (for example, deactivate the function in the second time section, then you can set turning on time is 10:00, and then set turning-off time is 10:00 also) Controller has memory function, setting is remembered, it neednt to set everyday. Everyday when the preset time is coming, water circuit pump is triggered automatically. Pressing Pipe timing button can check the setting. Manual operation: At the status that controller is in operation, hot water circuit pump can be triggered immediately by pressing On/Off button, pipe circulation signal displays. If the time of this operation is happened at the preset time section, it works as normal situation, namely works for 3 minutes, then stops for 15 minutes, same process continues within the time section. If the time of this operation is not within the preset time section, it works for 3 minutes, and then it stops automatically, no more restart. At the status that hot water circuit pump is in operation, press Pipe timing again to stop pump immediately.

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Solar Controller

Installation and operation instruction

4.7 Temperature-controlled hot water circuit pump Note: T4 sensor isnt included in the standard delivered product; user needs to have a extra temperature sensor T4 when he wants to have this function. Functional description: Solar system can provide temperature-controlled hot water circulation function, this function needs an extra hot water circulation pump ( P2) and a sensor (T4), which is positioned on the return pipe of hot water . When the temperature signal of sensor T4 is less than the preset turning on temperature, the hot water circulation pump (P2) is triggered and works till the temperature exceeds the turning off temperature. o o If the preset turning-on temperature of this function is 40 C, then when T4 is less than 40 C, for example it o is 39 C, this circulation pump is triggered and it is ceased o until T4 temperature reaches 45 C. Activate/deactivate this function: Press SET button 2 times, the hot water circulation temperature setting area blinks, default setting is OFF mode, ----displays. Press OK button to activate this function. Press button to adjust the temperature of circulation pump, (adjustable range: 20oC 50oC), after 6 seconds, controller confirms the setting automatically. In the status of setting the temperature for circulation pump, press OK button to deactivate this function, ----- displays. Note: Temperature controlled hot water circulation function is priority to trigger than time-controlled hot water circulation function. If the temperature-controlled hot water circulation function is triggered, then time-controlled hot water circulation function is ceased automatically. If the temperature-controlled hot water circulation function is ceased, then time-controlled hot water circulation function is triggered automatically. The position of the sensor T4 should be minimum 1.5m far from tank, so that avoid the measuring error. 4.8 Anti freezing protection of collector Note: this function is only useful in the system, which doesnt use anti-freezing liquid. Functional description: o In Winter when the temperature of collector is below the preset start temperature (2-10 C) of anti-freezing protection, solar circuit pump is triggered. While the anti-freezing protection function works, if the tank
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Solar Controller

Installation and operation instruction

temperature is less than 10oC, electrical booster will be triggered immediately and is switched off until water up to 15oC or when frost protection function is deactivated. When temperature of collector is 5oC higher than preset start temperature of frost protection, controller stops solar circuit pump and exits the program. This function is used in the system which uses water as heat transfer medium to avoid freezing problem. Activate/deactivate this function: Press SET button 1 time, the frost protection setting area blinks; default setting is off, display ----. Press OK button to activate this function. Press button to adjust the switch-on temperature of frost protection, (adjustable range: 2oC 10oC), after 6 seconds, controller confirms the setting automatically. In the status of setting frost protection temperature, press OK button to cease this function, ---- appears on screen. When the signal of frost protection displays on screen, it indicates frost protection function is activated. Note: this function is allowed to be used in the solar system, which doesnt use anti-freezing heat transfer liquid, in the area where only few days in whole year the ambient temperature may be closed to the freezing temperature. But for a safety system and in the area where anti-freezing must be considered, we suggest using proper anti-freezing liquid to resolve freezing problem. 4.9 tank high temperature protection ( 1) In order to avoid the high temperature of tank, controller will check the temperature of bottom part of tank (T2), when T2 rises to 95 C,this function is activated, and solar pump is ceased. When temperature of bottom part of tank (T2) drops less than 85 C, this function is deactivated automatically. When the signal of high temperature protection (1) displays on screen, it indicates this function is activated. Note: this function is a default design; its parameters cant be set. 4.10 tank high temperature protection ( 2) Note: this function is only useful in the solar system, which uses tank with two heat exchangers. (Default setting of this function is closed). Functional description: It needs an extra valve on the inlet pipe, in order to avoid the high temperature of tank, controller will check the temperature of bottom part of tank (T2), if T2 is higher than the preset switching-on temperature of this function, this extra valve will be opened. When T2 drops 5oC below the switching-on temperature of this function, the extra valve will be closed automatically.
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o o

Solar Controller

Installation and operation instruction

Activate /deactivate this function: Press SET button 3 times, maximal tank temperature setting area blinks; default setting is off, display ----. Press OK button to activate this function. Press button to adjust the
o

maximum

temperature of tank, (adjustable range: 80 C 99oC), after 6 seconds, controller confirms the setting automatically. In the status of setting maximal temperature of tank, press OK button to cease this function, ----appears on screen. When the signal of high temperature protection (2) displays on screen, it indicates this function is activated.

4.11 C/F button Press C/F button to achieve display of temperature between Celsius and Fahrenheit. 4.12 Protection function a.Memory protection when power is failure In case power failure occurs, controller keeps the parameter settings unchanged. b.Anti-bacteria protection In order not to effect the health of customer and to prevent to occur bacteria when tank temperature is lower for a long time, controller will check the temperature of tank every 7 days in a period automatically, if the temperature of tank is never over 70 during the period, then at the default time of 23:00 on the seventh day of the period auxiliary heating system is triggered automatically, when the temperature rises to 70, the auxiliary heating stops, bacteria is killed. C.Screen protection When no any press on button for 60 minutes, screen protection is activated, and then LED light lamp is switched-off. Through press any button to light LED lamp again. d.. System comeback When mistakes or problems occur in system, press OK button, which is on display panel, to recover system to factory set.
o

5. Trouble shooting
5.1 Trouble protection When there is a break or short circuit between the connection of temperature sensors, controller switches off the corresponding functions and no more output signals are given, at the same time error indications are showed on the display. 5.2 Error messages indication

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Solar Controller

Installation and operation instruction

If control unit does not work correctly, please check following error messages and error rectification indication. Warning signal is displayed on screen. Error messages and handling indication (LCD display warning signal blinks) Error Meaning Cause of error message T1 T1 sensor fault Sensor wiring interrupted, not connected or short circuit blinks T2 T2 sensor fault Sensor wiring interrupted, not connected or short circuit blinks o T3 99 C T3 sensor fault Sensor wiring interrupted, not blinks connected or short circuit E0 Connection fault between display and controller Connection cable is interrupted or short circuit

Error rectification Check resistance value, replace sensor if necessary Check resistance value, replace sensor if necessary Check resistance value, replace sensor if necessary Check and replace if necessary

Note: when the error of sensor appears, its corresponding function will be switched off automatically. 5.3 Error checking The controller is quality product, conceived for years of continuous trouble-free operation. If a problem occurs, the cause of the problem very often lies not in the controller but in the peripheral components. The following description of some well-known problems should help the installer and operator to isolate the problem, so that the system can be place back into operation as quickly as possible and to avoid unnecessary costs. Of course, not all possible problems can be listed here. However, most of the normal problems encountered with the controller can be found in the list below, only return the controller when you are absolutely sure that none of the problems listed below is responsible for the fault. a. A potentially defective sensor can be checked using an ohmmeter. To do this, the sensor must be disconnected, its resistance measured, and the value compared with the figures in the table below, small deviation are acceptable, (note: remove the device from the mains supply before opening the case) PT1000 resistance value oC 0 1000 10 1039 20 1077 30 1116 40 1155 50 1194 60 1232 70 1270 80 1309 90 1347 100 1385 110 1422 120 1460

NTC 10K B=3950 resistance value oC 0 33620 10 20174 20 12535 30 8037 40 5301 50 3588 60 2486 70 1759 80 1270 90 933 100 697 110 529 120 407

b. Cause of failures Symptoms Controller does not appear to function at all Secondary symptoms Display shows nothing, no display illumination Possible cause Controller power supply is interrupted Procedure Check the controller power cable and connection cable between controller and display. The solar pump doesnt operate, despite the fact that switch-on conditions are satisfied The pump symbol in the display blinks Pump power supply is interrupted Check the pump power cable

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Solar Controller

Installation and operation instruction

Pump doesnt operate

The pump symbol in the display doesnt blink, error message signal blinks on the display screen.

Fault ( short circuit or open circuit) in a temperature sensor

On the controller, request the current values from all connected temperature sensors, replace all defective sensors and /or cabling

The solar pumps operated, despite the fact that the switch-on conditions are not satisfied. C. Guarantee

The pump symbol in the display blinks.

The frost protection function is activated.

No problem, it is normal. If necessary to deactivate the corresponding functions.

The warranty expires within 24 months after the date of purchasing the controller.

6. Technical data
Appearance of display see product itself (dimension: 120mm x120mm x18mm) Appearance of controller: see product itself (dimension: 200mm x140m x 45mm) Power supplyAC220V 10% Power consumption< 3W o Accuracy of temperature measuring 2 C Range of temperature measuring 0 ~120 oC Suitable power of pump: 2 pumps possible to be connected, power of each pump < 600W Suitable power of valve: 1 valve possible to be connected, possible power < 600W Suitable power of electrical boosterstandard 2000W, Inputs 4 sensors, 1 Pt1000 sensor (500oC) for collector (silicon cable280oC), 1 or 2 NTC10K, B3950 sensor ( 135oC) for tank, (PVC cable 105oC), o o 1 NTC 10K, B3950 sensor ( 135 C) for hot water circuit pump. (PVC cable 105 C), Note: sensor for hot water circuit pump is optional. Outputs4 relays, one for electrical booster, 2 for circulation pumps, 1 for valve. Ambient temperature -10oC ~ 50oC. Water proof gradeIP40. Socket Choice by customer (Europe, American, Chinese or others, please note in order)

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