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Taco PC705-2 Add-On Variable Speed Pump Injection Mixing Control for -EXP Controls The PC705-2 is a microprocessor-based PID control designed to regulate the supply water temperature to a heating system by controlling a boiler and the speed of an injection pump.
The PC705-2 controls the system supply water temperature based on the outdoor air temperature (outdoor reset). A boiler sensor can be connected in order to prevent corrosion in the boiler due to flue gas condensation. If the PC705-2 is controlling the boiler supply water temperature, the control continuously adjusts the boiler differential in order to optimize the firing cycles of the boiler, prevent large water temperature swings, and increase the efficiency of the system.
A wiring harness is provided to be easily connected to the Taco Expandable (-EXP) Controls. The PC705-2 also includes features such as an automatic reset ratio calculation, warm weather shut down (WWSD), and a maximum supply water temperature setting.
Came from plumbing company surplus.
We are not in the heating business and no application information other than what is listed which is on the box. Please make sure that this item is what you need for your application.
New in Opened Factory Box