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Mechanical Specifications <br /> General have thermal overload protection and permanently <br /> The units shall be horizontal airflow as shipped and lubricated motor bearings. Motor/blower assembly <br /> convertible to downflow.All units shall be factory isolated from unit with rubber mounts. <br /> assembled,piped, internally wired and fully charged Outdoor Fan <br /> with refrigerant. Units shall be certified to UL Standard One direct-drive,statically and dynamically balanced <br /> 1995.All units shall be factory run tested to check propeller fan shall be used in a draw-through vertical <br /> cooling operation,fan and blower rotation and control discharge configuration. Permanently lubricated <br /> or TXV sequence. Units shall be designed to operate at weather proof motor shall have built-in thermal <br /> ambient temperatures between 115°F and 55°F in overload protection. <br /> cooling as manufactured.Cooling performance shall be <br /> rated in accordance with AHRI standards. System Controls <br /> Unit Casing System controls include condenser fan,evaporator fan <br /> All components shall be mounted in a weather- <br /> and compressor contactors. <br /> resistant steel cabinet with an enamel finish.Access Accessories Roof Curb <br /> panels shall be provided for unit controls and indoor The roof curb shall be designed to mate with the unit <br /> coil and fans. Indoor air section compartment shall be and provide support and complete weathertight <br /> completely insulated with fireproof, permanent, installation when properly installed.Adhesive back <br /> odorless fiber material. Knockouts shall be provided for polyurethane sealing strips shall be provided to ensure <br /> utility and control connections. Drain connections shall an airtight seal between supply and return openings of <br /> be provided to accommodate indoor water runoff. the curb and unit.The roof curb design allows field <br /> Compressor fabricated ductwork to be connected directly to the <br /> curb.Curb ships knocked down for field assembly,and <br /> The compressor shall be hermetically sealed, high includes factory installed wood nailer strips. <br /> efficiency scroll compressors. Internal overcurrent and <br /> over temperature protection,internal pressure relief Electric Heaters <br /> shall be standard.Other features include centrifugal oil Each heater assembly shall include power supply <br /> pump,low vibration and noise. fusing if over 48 amps,automatic resetting limit <br /> Refrigeration System switches and heat limiters for thermal protection. <br /> Heaters shall be provided with polarized plugs for quick <br /> All units shall have refrigerant control. Service pressure connection to unit low voltage wiring. Electric heat <br /> tap ports and a refrigerant line filter shall be standard. modules shall be UL listed. <br /> Evaporator Coil Internally enhanced 3/8" OD seamless Single Source Power Entry <br /> copper tubing mechanically bonded to aluminum fins, <br /> factory pressure and leak tested at 480—650 psig.All This accessory when used with electric heat accessory <br /> units have TXV to control refrigerant flow. shall allow single source power connection to unit and <br /> heater combination. Single source power entry kits <br /> Condenser Coil shall have specific matching heater(s). Kit shall include <br /> The Spine Fin TM condenser coil shall be continuously high voltage terminal blocks,fuse blocks and fuses, <br /> wrapped,corrosion resistant all aluminum with cut-to-length interconnecting wiring,and junction box <br /> minimum brazed joints.This coil is 3/8" OD seamless (if required)to provide power sources with fuse <br /> aluminum tubing glued to a continuous aluminum fin. protection as required for both the unit and accessory <br /> Coils are lab tested to withstand 2.000 pounds of heater. Kit components shall install within the heater <br /> pressure per square inch.The outdoor coil provides cabinet in the heater access section. Single source <br /> low airflow resistance and efficient heat transfer.The branch power circuit shall be protected and wired in <br /> coil is protected on all four sides by louvered panels. accordance with local codes. <br /> Indoor Air Fan <br /> Constant Torgue,forward-curved,centrifugal wheel in <br /> a Composite Vortica®Blower housing. Motor shall <br /> 4WCC4024E-SUB-1A-EN 11 <br />