Outside Air Sensor for Geothermal Systems PRD TB PRD-RD Round Barometric By-Pass Damper TB PRD Rectangular Barometric By-Pass Damper PS4.
The Model OAS-GT Outside Air Sensor allows precise real time monitoring of the Outside Air temperature on your Zoned Geothermal HVAC system. The OAS-GT consists of dual 10k Thermistors factory wired in parallel which wire directly into the BMPlus series or UZC series control panels allowing the Control System to monitor the outside air temperature in heating mode for very-cold climates. Using the adjustable potentiometer on the Ultra-Zone Control Panel, the installer can set the desired outdoor temperature changeover setting, to engage supplemental or backup heating systems. The Model OAS-GT CANNOT be used with the Model HK2000 Economizer or Model 072000 Humidistat For more information go to: http://www.ewccontrols.com/acrobat/090377a0149.pdf http://www.ewccontrols.com/acrobat/090377a0140.pdf