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1 Installer s Guide eat umps 4TWB ALL phases of this installation must comply with NATIONAL, TATE AND LOAL ODE 18-B85D1-1 IMORTANT This Document is customer property and is to remain with this unit. Lease return to service information pack upon completion of work. These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with the installation.

Hould further information be desired or should particular problems arise which are not covered sufficiently for the purchaser s purposes, the matter should be referred to your installing dealer or local distributor. Note: The manufacturer recommends installing only approved matched indoor and outdoor systems. All of the manufacture s split systems are ARI rated only with TXV/EEV indoor systems. Ome of the benefits of installing approved matched indoor and outdoor split systems are maximum efficiency, optimum performance and the best overall system reliability. Table of ontents ection 1. Unit Location onsiderations. Unit reparation.

Etting the Unit. Refrigerant Line onsiderations. Refrigerant Line Routing. Refrigerant Line Brazing.

Refrigerant Line Leak heck ection 9. Evacuation ection 10. Ervice Valves ection 11. Electrical - Low Voltage ection 12. Electrical - igh Voltage ection 13.

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Tart Up ection 14. Ystem harge Adjustment ection 15. Heckout rocedures and Troubleshooting. 23 2 ection 1. WARNING This information is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience. Any attempt to repair a central air conditioning product may result in personal injury and/or property damage. The manufacture or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.!

WARNING These units use R-410A refrigerant which operates at 50 to 70% higher pressures than R-22. Use only R-410A approved service equipment. Refrigerant cylinders are painted a Rose color to indicate the type of refrigerant and may contain a dip tube to allow for charging of liquid refrigerant into the system.

All R-410A systems use a OE oil that readily absorbs moisture from the atmosphere. To limit this hygroscopic action, the system should remain sealed whenever possible. If a system has been open to the atmosphere for more than 4 hours, the compressor oil must be replaced. Never break a vacuum with air and always change the driers when opening the system for component replacement. For specific handling concerns with R-410A and OE oil reference Retrofit Bulletins -AG006-EN and A-AG011-EN or AAG012-EN.!

WARNING LIVE ELETRIAL OMONENT! During installation, testing, servicing, and troubleshooting of this product, it may be necessary to work with live electrical components. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.! AUTION If using existing refrigerant lines make certain that all joints are brazed, not soldered.! AUTION croll compressor dome temperatures may be hot.

Do not touch the top of compressor; it may cause minor to severe burning.! WARNING UNIT ONTAIN R-410A REFRIGERANT! R-410A operating pressures exceed the limit of R-22. Roper service equipment is required. Failure to use proper service tools may result in equipment damage or personal injury. ERVIE UE ONLY R-410A REFRIGERANT AND A- ROVED OE OMREOR OIL.! WARNING Extreme caution should be exercised when opening the Liquid Line ervice Valve.

Turn counterclockwise until the valve stem just touches the rolled edge. No torque is required. Failure to follow this warning will result in abrupt release of system charge and may result in personal injury and /or property damage B85D1-1 3 ection 2. Unit Location onsiderations 2.1 Unit Dimensions and Weight Table 2.1 Unit Dimensions and Weight Models x D x W (in) Weight.

(lb) 4TWB x 30 x TWB x 30 x TWB3030B 33 x 30 x TWB3036B 33 x 34 x TWB3042B 33 x 34 x TWB3048B 37 x 34 x TWB3060B 41 x 34 x. Weight values are estimated. W When mounting the outdoor unit on a roof, be sure the roof will support the unit s weight. D roperly selected isolation is recommended to alleviate sound or vibration transmission to the building structure.

2.2 Refrigerant iping Limits 1. The maximum length of refrigerant lines from outdoor to indoor unit should NOT exceed sixty (60) feet. The maximum vertical change should not exceed sixty (60) feet. Ervice valve connection diameters are shown in Table 5.1. Note: For line lengths greater than sixty (60) feet, Refer to Refrigerant iping Application Guide, -AG006-EN or Refrigerant iping oftware rogram, (or latest revision). Tandard Line et 60 Max Line Length 60 Max Vertical hange 60 Max Vertical hange 18-B85D1-1 3 4 2.3 uggested Locations for Best Reliability Ensure the top discharge area is unrestricted for at least five (5) feet above the unit.

Avoid Install Near Bedrooms Three (3) feet clearance must be provided in front of the control box (access panels) and any other side requiring service. It is not recommended to install in a location where noise may distract the building occupants. Ome examples of these types of locations are sleeping quarters and by windows of a living area. Lease discuss location with the building owner prior to installation. 12 to hrubbery Min 5 Unrestricted Min 3 Unrestricted Access anel Avoid locations such as near windows where condensation and freezing defrost vapor can annoy a customer. Osition the outdoor unit a minimum of 12 from any wall or surrounding shrubbery to ensure adequate airflow.

Outdoor unit location must be far enough away from any structure to prevent excess roof runoff water or icicles from falling directly on the unit. 12 to hrubbery Min. 12 to Wall 2.4 old limate onsiderations NOTE: It is recommended that these precautions be taken for units being installed in areas where snow accumulation and prolonged below freezing temperatures occur.

Units should be elevated 3-12 inches above the pad or roof top, depending on local weather. This additional height will allow drainage of snow and ice melted during defrost cycle prior to its refreezing.

Ensure that drain holes in unit base pan are not obstructed preventing draining of defrost water. If possible, avoid locations that are likely to accumulate snow drifts.

If not possible, a snow drift barrier should be installed around the unit to prevent a build-up of snow on the sides of the unit. 12 now Barrier now Legs ad 3-12 Elevation 4 18-B85D1-1 5 2.5 oastal onsiderations If installed within one mile of salt water, including seacoasts and inland waterways, models without factory supplied eacoast alt hields require the addition of BAYEA001 (eacoast Kit) at installation time. Unit reparation 3.1 repare The Unit For Installation TE 1 - heck for damage and report promptly to the carrier any damage found to the unit. TE 2 - To remove the unit from the pallet, remove tabs by cutting with a sharp tool. Etting the Unit 4.1 ad Installation When installing the unit on a support pad, such as a concrete slab, consider the following: The pad should be at least 1 larger than the unit on all sides. The pad must be separate from any structure.

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The pad must be level. The pad should be high enough above grade to allow for drainage. The pad location must comply with National, tate, and Local codes. 18-B85D1-1 5 6 ection 5.