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Mechanical Specifications <br /> General Indoor Air Fan <br /> The units shall be horizontal airflow as shipped and Constant Torgue,forward-curved,centrifugal wheel in <br /> convertible to downflow. a Composite Vortica®Blower housing. Motor shall <br /> All units shall be factory assembled, piped,internally have thermal overload protection and permanently <br /> wired and fully charged with refrigerant. Units shall be lubricated motor bearings. Motor/blower assembly <br /> certified to UL Standard 1995. Units shall be designed isolated from unit with rubber mounts. <br /> to operate at ambient temperatures as high as 1151F. Outdoor Fan <br /> Cooling performance shall be rated in accordance with One direct-drive,statically and dynamically balanced <br /> AHRI standards.The YC heating/cooling unit design is propeller fan shall be used in a draw-through vertical <br /> certified to ANSI 221.47/CSA 2.3,specifically for discharge configuration. Permanently lubricated <br /> outdoor applications using natural gas or propane.All weather proof motor shall have built-in thermal <br /> units shall be designed for outdoor rooftop or ground overload protection. <br /> level installation. <br /> Unit Casing System Controls <br /> System controls include condenser fan,evaporator fan <br /> All components shall be mounted in a weather- and compressor contactors. <br /> resistant steel cabinet with an enamel finish.Access <br /> panels shall be provided for unit controls and indoor Accessories Roof Curb <br /> coil and fans. Indoor air section compartment shall be The roof curb shall be designed to mate with the unit <br /> completely insulated with fireproof, permanent, and provide support and complete weathertight <br /> odorless fiber material. Knockouts shall be provided for installation when properly installed.Adhesive back <br /> utility and control connections. Drain connections shall polyurethane sealing strips shall be provided to ensure <br /> be provided to accommodate indoor water runoff. an airtight seal between supply and return openings of <br /> Compressor the curb and unit.The roof curb design allows field <br /> fabricated ductwork to be connected directly to the <br /> The compressor shall be hermetically sealed, high curb.Curb ships knocked down for field assembly,and <br /> efficiency scroll compressors. Internal overcurrent and includes factory installed wood nailer strips. <br /> over temperature protection,internal pressure relief <br /> shall be standard.Other features include centrifugal oil Heating System <br /> pump,low vibration and noise. Gas-Fired Heating Section <br /> Refrigeration System Models shall provide completely assembled,wired and <br /> piped gas fired heating systems within unit. Design <br /> All units shall have refrigerant control. Service pressure certified by UL,specifically for outdoor application. <br /> tap ports and a refrigerant line filter shall be standard. Threaded gas connection on the unit. <br /> Evaporator Coil (5 Ton Model) Internally enhanced 3/ Electric Ignition System <br /> 8" OD seamless copper tubing mechanically bonded to <br /> aluminum fins,factory pressure and leak tested at 480— Main burner is lit each time thermostat calls for heat. <br /> 650 psig.All units have TXV to control refrigerant flow. Flame sensor proves flame and keeps the main burner <br /> on. Should a loss of flame occur,the main valve closes <br /> Condenser Coil and the spark recurs within 0.8 seconds.When <br /> The Spine Fin T"I condenser coil shall be continuously thermostat is satisfied, main burner is extinquished. <br /> wrapped,corrosion resistant all aluminum with Forced Combustion Blower <br /> minimum brazed joints.This coil is 3/8" OD seamless <br /> aluminum tubing glued to a continuous aluminum fin. Insures flame stability under varying wind conditions. <br /> Coils are lab tested to withstand 2.000 pounds of Gives higher combustion efficiency and location <br /> pressure per square inch.The outdoor coil provides flexibility. <br /> low airflow resistance and efficient heat transfer.The Heat Exchanger <br /> coil is protected on all four sides by louvered panels. Stainless steel tubes. Free floating design. <br /> Burners <br /> Stainless steel. Multi-port inshot. <br /> 4YCC4060A-SUB-1 F-EN 13 <br />