The Burnham Commercial RTC Return Temperature Control provides an economical and effective means of boiler protection from thermal shock and sustained condensing operation. The RTC monitors the boiler return water temperature and operates a 3-way diverting valve and boiler circulator to maintain a minimum return temperature of 135°F or greater. An outdoor reset function is also available to reset the system water temperature based on outdoor air temperature. Studies indicate that resetting the boiler and system water temperature increases efficiency and reduces operating costs. The control is available in two configurations: Basic RTC Kit and RTC Kit with Outdoor Reset Control.
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