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Mechanical Specifications <br />Fully Modulating Economizer <br />This accessory shall be field installed and be composed <br />of the following items: 0-100 % fresh air damper, <br />damper drive motor, fixed dry bulb enthalpy control, <br />and low voltage pigtails for electrical connections. <br />Solid state enthalpy or differential enthalpy control is <br />optional. Economizer operations shall be controlled by <br />the preset position of the enthalpy control. A <br />barometric relief damper shall be standard with the <br />economizer and provide a pressure operated damper <br />that shall be gravity closing and prohibit entrance of <br />outside air on equipment "off" cycle. Economizer <br />requires BAYRLAY004A relay kit to interface the <br />economizer to the heat pump. <br />Manual Outside Air Dampers <br />Rain hood and screen shall be field installed. Suitable <br />for up to 25% outside air. <br />Start Kit <br />Extra compressor starting capacity for single phase <br />equipment. <br />Control Options <br />Standard Indoor Thermostats <br />Two stage heating/cooling or one stage heating/cooling <br />thermostats shall be available in either manual or <br />automatic changeover. <br />Programmable Electronic Night Setting Thermostat <br />Programmable electronic thermostat shall provide <br />heating setback and cooling setup with 7—day <br />programming capability. 1H/1C or 21-1/2C models <br />available. <br />OTUS <br />Sm <br />Intertek <br />The manufacturer optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, <br />the leader in creating and sustaining safe, comfortable and energy efficient environments, the manufacturer offers a <br />broad portfolio of advanced controls and HVAC systems, comprehensive building services, and parts. For more <br />information, visit www.IRCO.com. <br />Them an ufacturer has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice. <br />©2014 Tra n e <br />4WCC4036A—SUB-1 E-EN 11 Dec 2015 / // Ingersoll Rand <br />Supersedes 4WCC4036A—SUB-1D-EN (June2015) 0 <br />