Misol 220V controller of solar water heater, used for separated pressurized solar hot water system, for 4000W electrical heater

Description: This listing includes: 1 unit of controller for pressurized solar water heating system, 220V. It can connect 4000w(Max.) electrical element heater @ 220V. Application: It can be used for the solar hot water heating system: 1 collector array – 1 storage tank – 1 pump and auxiliary heating. Delivery list 1 * SR81 controller 1 * accessory bag 1 * user manual 1 * PT1000 temperature sensor (φ6*50mm,cable length 1.5meter) 2 * NTC10K temperature sensor (φ6*50mm,cable length 3meter) (remark:there’s no power cable in the package, please prepare a power cable of 2.5mm2) Function Introduction: The solar circuit pump (R1) is switched on as soon as the switch-on temperature difference (△T on) between the collector array (T1) and the storage tank (T2) is reached. If the temperature difference between the collector array (T1) and storage tank (T2) drops below the switch-off temperature difference (△T off), , or the temperature of storage tank (T3) reaches the preset maximum storage temperature, then the solar circuit pump (R1) is switched off. Back-up heating by auxiliary boiler: within the preset time section of back-up heating, if the temperature T3 is below the switch-on temperature, then the circulation pump ( H1) of back-up heating is triggered, when T3 is heated to the switch-off temperature, circulation pump H1 of back-up heating is ceased. APPLICATIONS CAPACITY Max.number of collectors:1 Max.number of storage tanks:1 Max.number of relays:4 Max.number of sensors:5 Max.number of visualization application system: 1 Size of Keypad:120mm x 120mm x 18mm Size of Controller(1.5KW version): 200mm x140mm x43mm Power supply: AC220-240V, 50-60Hz Power consumption: < 2.5W Rated impulse voltage: 2.5KV Housing: Plastic ABS Protection type: IP41 Mounting: Wall mounting Operation: 10 push buttons at the front cover. Accuracy of temperature measuring: ± 0.1℃ Range of collector temperature measuring: -10℃ ~220℃ Range of tank temperature measuring: 0℃ ~110℃ Suitable power of pump: 3 pumps possible to be connected Suitable power of HK (backup electrical heater): 1pc : ˂=4000KW (@220-240V) Inputs: 3 sensors 1pcs*Pt1000 sensor (≤500℃) for collector (silicon cable≤280oC) 2pcs*NTC10K B3950 sensor (≤ 135℃) for tank (PVC cable ≤105oC) Outputs: 4 relays for circulation pump and backup heating 3*Electronmagnetic relay Max.current: 2A HK relay(4KW version):20A Ambient temperature: -10℃ ~ 50℃ Water proof grade: IP41 MAIN FUNCTION: DATE---Date setting Timed heat---backup heating Circle---Hot water circulation LOAD---Setup Loading tank1 COL---Collector1 PUMP---Pump control mode COOL---Cooling function AUX---Auxiliary function MAN---Manual mode BLPR---Blocking protection function OTDI---Thermal disinfection function FS---Flow meter type selection. UNIT---C-F unit switch RST---factory setting PASS--- password set Holiday function Screen Protection Trouble Protection Trouble Checking Display illustration: