For proper unit operation, check refrigerant charge using charging information located on control box cover and/or in the Check Charge section of this instruction. IMPORTANT: Maximum liquid--line size is 3/8--in. OD for all residential applications including long line. Refer to Residential Piping and Longline Guideline for further information. IMPORTANT: Always install the factory--supplied liquid--line filter drier. If replacing the filter drier, refer to Product Data Digest for appropriate part number.
There are no buried--line applications greater than 36--in. (914.4 mm) allowed. If refrigerant tubes or indoor coil are exposed to atmosphere, they must be evacuated to 500 microns to eliminate contamination and moisture in the system. Install Liquid-- Line Filter Drier Indoor UNIT DAMAGE HAZARD Outdoor Unit Connected to Factory Approved Indoor Unit Outdoor unit contains correct system refrigerant charge for operation with factory approved AHRI rated indoor unit when connected by 15 ft. (4.
Final Tubing Check IMPORTANT: Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment. Ensure tubes are not rubbing against each other or any sheet metal or wires. Pay close attention to feeder tubes, making sure wire ties on feeder tubes are secure and tight. Installing with Indoor Piston Outdoor Unit Connected to Factory Approved Indoor Unit Check piston size shipped with indoor unit to see if it matches required indoor piston size.
Table 2 – Rating Plate (required) Subcooling Temperatures R --- 410A Required Liquid Line Temperature _F (_C) Measure Liquid Pressure (psig) _F (_C) _F (_C) _F (_C) _F (_C) _F (_C) _F 6 3 8 4 10 6 12 7 14 8 16 9 251 78 26 76 24 74 23 72 22 70 21 68 20 259 80 27 78 26 76 24 74 23 72 22 70 21 266 82 28 80 27 78 26 76 24 74 23 72 22 274 84 29 82 28 80 27 78 26 76 24 74 23 283 86 30 84 29 82 28 80 27 78 26 76 24 291 88 3
Table 4 – Required Suction--Line Temperature SUPERHEAT TEMP (_F) SUCTION PRESSURE AT SERVICE PORT (PSIG) 107.8 112.2 116.8 121.2 126 130.8 138.8 140.8 145.
Make Electrical Connections Final Wiring Check Be sure field wiring complies with local and national fire, safety, and electrical codes, and voltage to system is within limits shown on unit rating plate. Contact local power company for correction of improper voltage. See unit rating plate for recommended circuit protection device. NOTE: Operation of unit on improper line voltage constitutes abuse and could affect unit reliability. See unit rating plate.
3-- Phase Monitor Check Charge In 3--phase units a small circuit board is factory installed to monitor line voltage. A small led will flash if a phase problem exists. See code descriptions on monitor. If LED is flashing, disconnect power to unit and interchange 2 field--wiring leads on unit contactor. Factory charge amount and desired subcooling are shown on unit rating plate. Charging method is shown on information plate inside unit.
Table 6 – Accessory Usage ACCESSORY REQUIRED FOR LOW --- AMBIENT COOLING APPLICATIONS (Below 55F/12.8_C) REQUIRED FOR LONG LINE APPLICATIONS* REQUIRED FOR SEA COAST APPLICATIONS (Within 2 miles/3.
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