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Caleffi iSolar2 Controller 257220A Buy Page
Solar with 1 electronic output relay for pump speed control, includes 3 temperature sensors
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Caleffi Solar iSolar2 Controller 257220A Standard Functions:
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- Delta T Cotrol - When the switch-on difference is reached, the pump is
activated until the differential temperature drops below
- Maximum tank temperature - When the adjusted maximum tank
temperature is exceeded, the pump switches off
- Collector emergency shutdown - If adjusted collector temperature
is exceeded, the solar pump is switched off
- System cooling - If the temperature rises to the maximum collector
temperature the solar pump remains on until the temperature drops
- Minimum collector temperature - a minimum set temperature
which must be exceeded before the solar pump is switched-on
- Antifreeze function - If the adjusted temperature drops, the solar
pump is switched on to protect the fluid from freezing
- Tank Cooling Function - In the evening, the solar pump continues
running until the storage tank is cooled down
- Tube Collector Function - The controller measures an increase of heat
rise in the collector and adjusts operation for maximum efficiency
- Heat Generation Measrurement KWh (BTu) - The heat generated is
measured by the flow and the temperature of feed and return sensors
- Operating hours counter - Operating hours counter stores the
solar operating hours of the respective relay
- Manual operating mode - For control and servicing, the operating
mode of the controller can be switched manually
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Caleffi Solar iSolar2 Controller 257220A Advanced Functions:
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- Selectable programs - 1
- Speed Control Triac Output (30 to 100%) - 1
- Sensorinputs (temperature) - 4
- Max. Solar collector arrays - 1
- Max. Solar Storage tanks - 1
- Drainback pump peed control - Yes
- Collector freeze protection - Yes
- Evacuated tube collector function - Yes
- Min collector temperature - Yes
- Collector cooling functions - Yes
- Tank (nighttime) cooling - Yes
- Emergency shutdown functions - Yes
- Operating hours counter - Yes
- Energy metering measurement - Yes
- Vbus data commincation - Yes
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Caleffi iSolar2 257220A Controller PDF Manuals and Brochures - Click Here
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