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The qualified installer or agency must use factory- --authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing. Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. Consult local building codes and current editions of the National Electrical Code ( NEC ) NFPA 70. In Canada, refer to current editions of the Canadian electrical code CSA 22.1. Recognize safety information. This is the safety- --alert symbol When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words; DANGER, WARNING, and CAUTION. These words are used with the safety- --alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. ! WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label. INSTALLATION INSTRUCTIONS NOTE: In some cases noise in the living area has been traced to gas pulsations from improper installation of equipment. 1. Locate unit away from windows, patios, decks, etc. where unit operation sound may disturb customer. 2. Ensure that vapor and liquid tube diameters are appropriate for unit capacity. 3. Run refrigerant tubes as directly as possible by avoiding unnecessary turns and bends. 4. Leave some slack between structure and unit to absorb vibration. 5. When passing refrigerant tubes through the wall, seal opening with RTV or other pliable silicon- --based caulk. (See Fig. 1.) 6. Avoid direct tubing contact with water pipes, duct work, floor joists, wall studs, floors, and walls. 7. Do not suspend refrigerant tubing from joists and studs with a rigid wire or strap which comes in direct contact with tubing.(See Fig. 1.) 8. Ensure that tubing insulation is pliable and completely surrounds vapor tube. 9. When necessary, use hanger straps which are 1 in. (25.4 mm) wide and conform to shape of tubing insulation. (See Fig. 1.) 10. Isolate hanger straps from insulation by using metal sleeves bent to conform to shape of insulation. NOTE: Avoid contact between tubing and structure OUTDOOR WALL CAULK LIQUID TUBE VAPOR TUBE TUBEONLY) JOIST HANGER STRAP (AROUND VAPOR INSULATION VAPOR TUBE 1” (25.4 mm) MIN. LIQUID TUBE SUSPENSION A94026 Fig. 1 - --Piping Installation The outdoor unit contains system refrigerant charge for operation with ARI rated indoor unit when connected by 15 ft. (4.57 m) of field- --supplied or factory accessory tubing. 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. IMPORTANT: Always install the factory- --supplied liquid- --line filter drier. If replacing the filter drier, refer to Product Data Digest for appropriate part number. Obtain replacement filter driers from your distributor or branch. INDOORWALLINSULATION THROUGHTHEWALL 127A127A INSTALLATION Check Equipment and Job Site UNPACK UNIT Move to final location. Remove carton taking care not to damage unit. Inspect Equipment File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating plate on unit corner panel. It contains information needed to properly install unit. Check rating plate to be sure unit matches job specifications. Install on a Solid, Level Mounting Pad If conditions or local codes require the unit be attached to pad, tie down bolts should be used and fastened through knockouts provided in unit base pan. Refer to unit mounting pattern in Fig. 2 to determine base pan size and knockout hole location. For hurricane tie downs, contact local distributor for details and PE (Professional Engineer) certification, if required by local authorities. On rooftop applications, mount on level platform or frame. Place unit above a load- --bearing wall and isolate unit and tubing set from structure. Arrange supporting members to adequately support unit and minimize transmission of vibration to building. Consult local codes governing rooftop applications. Roof mounted units exposed to winds m...