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Caleffi iSolar Relay Controls
Differential Temperature Controllers for Solar Water Heating Systems
Caleffi iSolar Differential Temperature Controllers
Caleffi Solar multi-functional temperature differential controller with add-on system functions, the iSolar series can be used for a wide variety of applications and has inputs for four PT1000 sensors. Preset factory defaults are defined for control of a standard solar water heating system with a second relay (some models) to divert any surplus heat. The auxiliary relay can be used to maintain the tank temperature, protect the system from overheating, or use another source to heat the storage tank.

This controller features a large Liquid Crystal Dispaly (LCD) user interface with three function keys. The easy-to-use icons assist to operate and customize a solar heating system.


Caleffi Solar Differential Controller Features:
  • User-friendly operation
  • System screen LCD display with 16-segment display and 8 symbols for system status
  • Operating LED control lamp
  • 3 push-button controls
  • Attractive design and compact dimensions
  • Easy to install

See prices and buy options for Caleffi iSolar Differential Temperature Controllers

Caleffi iSolar Techs

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Related Items:


Stiebel Eltron Solar Panels
Stiebel Eltron Solar Panels



Stiebel Eltron Indirect Tanks - Heat Flo Indirect Storage Tanks
Solar Water Heating Indirect Tanks
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  Just Some of our Winter Products - Click Images for more info:
High Efficiency Gas Boilers. Embassy ONEX Gas Boiler, Triangle Tube Gas Fired Boiler, Heat Flo Indirect Storage Tanks! Hydronic Heating - Pumps, Controls, Valves and more. Taco Pumps, Taco Zone Valves, Honeywell Controls, Watts, Azel, Taco Mixing Valves, Cash Acme, Caleffi and more. Gas Space Heaters. Rinnai Space Heaters, Monitor Gas Heater, Eskabe Heaters, Robur Heaters, Empire Gas Heaters PEX Tubing - PEX Radiant Heat! PEX Underfloor heating. Efficient and Warm. PEX tube in 3/8 to 1 inch sizes. Bosch Gas Tankless Water Heaters! Bosch Instant Hot Water Heater for single and multi use. Bosch Water Heaters! Electric Boilers for Hydronic Heating Systems, Radiant PEX Tubing Systems or any hydronic appication where electric rates are inexpensive Solar Heating - Solar Pumps, Solar Controls and more! Solar Panels for use on domestic hot water or pex radiant heating systems. Fantech Heat Recovery Ventilators. HEPA Whole House Filters. HEPA Fitlers. Energy Recovery Fans.
Gas Boilers Heating Supplies Gas Space Heaters PEX Tubing Tankless Water Heaters Electric Boilers Solar Heating Heat Recovery Ventilators

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