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Job Name:WA O <br /> • A Prepared By:Eve State Sheet Metal <br /> Unit Tag:Y4V-1 <br /> Quantity:1 <br /> Evaporator and Condenser Coils <br /> Evaporator Coils (only on T/YS*150, 180, 210, 240, 300G models)- <br /> Microchannel evaporator coils will be burst tested by the manufacturer. Internally finned, 5/16"copper <br /> tubes mechanically bonded to a configured aluminum plate fin shall be standard for evaporator coils. <br /> Coils shall be leak tested to ensure the pressure integrity. The evaporator coil shall be leak tested to <br /> 225 psig and pressure tested to 450 psig. <br /> Condenser Coils (available on T/Y**150, 180, 210, 240, 300G models) - Microchannel condenser coils <br /> shall be standard on all units. Coils shall be leak tested to ensure the pressure integrity. The <br /> condenser coil shall be leak tested to 225 psig and pressure tested to 450 psig. <br /> Gas Heating Section <br /> The heating section shall have a drum and tube heat exchanger design using corrosion resistant steel <br /> components. A forced combustion blower shall supply premixed fuel to a single burner ignited by a <br /> pilotless hot surface ignition system. <br /> In order to provide reliable operation, a negative pressure gas valve shall be used on standard <br /> furnaces and a pressure switch on furnaces with modulating heat that requires blower operation to <br /> initiate gas flow. On an initial call for heat, the combustion blower shall purge the heat exchanger 45 <br /> seconds before ignition. <br /> After three unsuccessful ignition attempts, the entire heating system shall be locked out until manually <br /> reset at the thermostat. Units shall be suitable for use with natural gas shall also comply with California <br /> requirements for low NOx emissions. <br /> Condenser Coil <br /> The microchannel type condenser coil is standard for the standard efficiency models. <br /> Due to flat streamlined tubes with small ports, and metallurgical tube-tofin bond, microchannel coil has <br /> better heat transfer performance. Microchannel condenser coil can reduce system refrigerant charge <br /> by up to 50% because of smaller internal volume, which leads to better compressor reliability. <br /> Compact all-aluminum microchannel coils also help to reduce the unit weight. All-aluminum <br /> construction improves re-cyclability. Galvanic corrosion is also minimized due to all aluminum <br /> construction. Strong aluminum brazed structure provides better fin protection. In addition, flat <br /> streamlined tubes also make microchannel coils more dust resistant and easier to clean. Coils shall be <br /> leak tested at the factory to ensure the pressure integrity. The evaporator coil and condenser coil shall <br /> be leak tested to 600 psig. The assembled unit shall be leak tested to 465 psig. <br /> Outdoor Fans <br /> The outdoor fan shall be direct-drive, statically and dynamically balanced, draw-through in the vertical <br /> discharge position. The fan motor(s) shall be permanently lubricated and shall have built-in thermal <br /> overload protection. <br /> Indoor Fan <br /> Units above shall have belt driven, FC centrifugal fans with adjustable motor sheaves. Units with <br /> standard motors shall have an adjustable idler-arm assembly for quick-adjustment of fan belts and <br /> motor sheaves. All motors shall be thermally protected. All indoor fan motors meet the U.S. Energy <br /> Policy Act of 1992 (EPACT). <br /> Multi-Speed Indoor Fan System <br /> Multi-speed indoor fan system is designed for use in applications for meeting the minimum <br /> requirement of CA Title 24. This system incorporates a multi-speed fan control to change the speed of <br /> the fan to 67% of full airflow based off of compressor stages. <br /> 1113 <br />