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F ItA li U <br />REFRIGERATION SYSTEM (CONTINUED) <br />Refrigerant Flow Control <br />Units applicable to expansion valve systems or RFC <br />systems when matched with specific indoor coils. <br />RFCIV METERING SYSTEM <br />IFICE BODY RFCIV <br />(On Co,q <br />r <br />ORIFICE <br />O-RING <br />LIQUID <br />LIQUID <br />LINE <br />LINE <br />SCREEN <br />SEAL <br />NUT <br />SWEAT <br />CONNECTION <br />RFCIV: <br />Accurately meters refrigerant in system. <br />Refrigerant control is accomplished by exact sizing of <br />refrigerant metering orifice. <br />The principle involves matching indoor coil with proper <br />bore size of orifice in metering device. <br />Equalizes pressure shortly after compressor stops, unit <br />starts unloaded, eliminating need for additional controls. <br />Furnished with air conditioner. See Specifications table <br />for orifice size furnished. <br />OPTIONS <br />Expansion Valve Kits <br />Must be ordered separately and field installed on certain <br />indoor units. See Specifications table. <br />Chatleff-style fittings. <br />Freezestat <br />Installs on or near the vapor line of the indoor coil or on <br />the suction line, <br />Senses suction line temperature and cycles the <br />compressor off when suction line temperature falls <br />below it's setpoint. <br />Opens at 29°F and closes at 58°F. <br />High Pressure Switch Kit <br />Protects the system from high pressure conditions that <br />can be a result of fan failure or a blocked/dirty coil. <br />Manual reset. <br />Loss of Charge Switch Kit <br />Helps protect the compressor from damage due low <br />refrigerant charge conditions <br />SPST, normally -closed switch, automatic reset switch <br />mounted on suction line. <br />Refrigerant Line Kits " <br />Refrigerant lines (suction 8 liquid) are shipped <br />refrigeration clean. Lines are cleaned, dried. <br />Pressurized and sealed at factory. <br />Suction line fully insulated. <br />Lines are stubbed at both ends. <br />Not available for .060 models. Must be field fabricated. <br />COMPRESSOR <br />© Scroll Compressor <br />Compressor features high <br />efficiency with uniform suction <br />flow, constant discharge flow, high <br />volumetric efficiency and quiet <br />operation. <br />Compressor consists of two <br />involute spiral scrolls mat,hed <br />together to generate a series of <br />crescent shaped gas pockets <br />between them. <br />During compression, one scroll <br />remains stationary while the <br />other scroll orbits around it. Gas is drawn into the outer <br />pocket, the pocket is sealed as the scroll rotates. As the <br />spiral movement continues, gas pockets are pushed to <br />the center of the scrolls. Volume between the pockets is <br />simultaneously reduced. When the pocket reaches the <br />center, gas is now at high pressure and is forced out of <br />a port located in the center of the fixed scrolls. <br />During compression, several pockets are compressed <br />simultaneously resulting in a smooth continuous <br />compression cycle. <br />Continuous Plank contact, maintained by centrifugal <br />force, minimizes gas leakage and maximizes efficiency. <br />Scroll compressor is tolerant to the effects of slugging <br />and contaminants. If this occurs, scrolls separate, <br />allowing liquid or contaminants to be worked toward the <br />center and discharged <br />Low gas pulses during compression reduces <br />operational sound levels. <br />Compressor motor is internally protected from <br />excessive current and temperature. <br />Compressor is installed in the unit on resilient rubber <br />mounts for vibration free operation. <br />OPTIONS <br />Compressor Crankcase Heater <br />Protects against refrigerant migration that can occur <br />during low ambient operation. <br />Compressor Sound Cover <br />A reinforced vinyl compressor cover containing a 1-112 <br />inch thick batt of fiberglass insulation. <br />All open edges are sealed with a one -inch wide hook <br />and loop fastening tape, <br />LCS13DC - 1.5 to 5 Ton Air Conditioner I Page 3 r 3 <br />