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i <br /> , <br /> • , A. Construct unit cabinet of galvanized steel,bonderized and coated <br /> , with a baked enamel finish. Insulate cabinet interior with 1" thick, <br /> . fireproof, neoprene coated fiberglass. Cabinet panels shall be <br /> i removable for service to operating components. Provide <br /> icondensate drain for indoor coil. Condensate pan shall be insulated <br /> � with 1" foam insulation. <br /> I <br /> � B. Indoor air fan shall be forward curved, centrifugal,belt-driven. <br /> � Motor pulley shall be adjustable pitch. Indoor fan motor shall have <br /> � ermanentl lubricated bearinas Outdoor fan shall be ro eller <br /> � P Y � • p P <br /> I type, with direct driven permanently lubricated motor. Fans shall <br /> idischarge upward. <br /> IC. Indoor and outdoor coils shall be nonferrous construction with <br /> ( aluminum plate fins mechanically bonded to seamless copper tubes <br /> iwith a11 j oints brazed. <br /> D. Unit compressor(s) shall be welded, fully hermetic with crankcase <br /> ' heater(s) and suitable vibration isolators. Compressors shall be <br /> same manufacture as unit,tested and designed in unit to operate to <br /> -20 F OAT on heating cycle without shutting off. Standard unit <br /> � shall be capable of operating to 35 OAT on cooling cycle. <br /> Compressors shall have a 5-year warranty. <br /> E. Provide electric resistance heaters as scheduled on drawings. <br /> Heaters shall consist of open wire nichrome elements with controls <br /> necessary for operation. Safety controls shall include primary over- <br /> � temperature and overcurrent protection. Heaters shall be UL listed <br /> I when either factory or field installed. <br /> F. Roof curb shall be by same manufacturer as unit and shall include <br /> insulated panel under compressor section to prevent condensation <br /> from forming on bottom. Curb dimensions shall allow for easy <br /> duct location and connection to roof curb prior to unit placement. <br /> � Roof curb shall be minimum of 12" high. Curb design shall comply <br /> with National Roofing Contractors Association requirements. <br /> i G. Heat pump cooling/heating system shall be protected with high <br /> pressurestat, low pressurestats, loss of charge protection, indoor <br /> coil freezestats, and current and temperature sensitive overload <br /> devices. Each device shall be wired to prevent compressor restart <br /> until reset at thermostat. Room thermostat shall contain a <br /> • ; "compressor malfunction light" designed to illuminate if any safety <br /> , <br /> i controls trip out compressor thru lockout circuit. <br /> ' ; <br /> � ICT 99184 <br /> , SECTION 15775 - 3 <br /> � <br /> , I <br />