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Manafacture: Trane File size: 945.33 kb File name: 4b449f18-6a0c-4e99-bd90-77cace58450f.pdf Language of manual:

These instructions do not cover all variations in systems nor provide for every possible contingency to be met in connection with installation. All phases of UNiT CONTAINS R-410A REFRIGERANT! this installation must comply with NATIONAL, STATE AND LOCAL CODES. Should further information be R-410A OPERATING PRESSURE EXCEEDS THE desired or should particular problems arise which are not LiMiT OF R-22. PROPER SERVICE EQUIPMENT IS covered sufficiently for the purchaser's purposes, the matter REQUIRED. FAILURE TO USE PROPER SERVICE should be referred to your installing dealer or local distributor. TOOLS MAY RESULT IN EQUIPMENT DAMAGE OR PERSONAL iNJURY. A. GENERAL The following instructions cover 4TWX6 Heat Pump Units. SERVICE NOTICE: USE ONLY R-410A REFRIGERANT AND These outdoor units may be used with indoor units APPROVED POE COMPRESSOR OiL. equipped with Thermostatic Expansion Valve only. © 5 FT. ABOVE UNIT=UNRESTRICTED 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 POE oil that readily absorbs moisture from the atmosphere. To limit this "hygroscopic" action, the system should remain sealed whenever pos sible. Never break a vacuum with air and alwa_Ls change the driers when opening the system for component replacement. Check for transportation damage after unit is uncrated. Report promptly, to the carrier, any damage found to the unit. To determine the electrical power requirements of the unit, refer to the nameplate of the unit. The electrical power available must agree with that listed on the nameplate. The Weathertron ®Heat Pump has been designed and manufactured to withstand and operate in severe winter unit base pan are not obstructed preventing conditions. However, there are precautionary steps which draining of defrost water. should be taken at the time of installation which will help 2, If possible, avoid locations that are likely to accumulate assure the efficient operation of the unit. It is recom snow drifts. If not possible, a snow drift barrier should be mended that these precautions be taken for units installed around the unit to prevent a build-up of snow being installed in areas where snow accumulation and on the sides of the unit and should be of sufficient prolonged below freezing temperatures occur. distance from the unit to prevent restriction of airflow to 1, Units should be elevated 3 to 12 inches above the pad or and from the unit. Also allow for proper maintenance rooftop, depending on local weather. This additional space. The barrier should be constructed of materials height will allow better drainage of snow and ice (melted which will blend in with the building design. during defrost cycle) prior to its refreezing. This should 3, Avoid locating the unit where condensation and freezing prevent a build-up of ice around the unit which occurs of defrost vapor may annoy the customer. For instance, when unit is not elevated. Insure that drain holes in |nsta||er's Guide The indoor end of the recommended refrigerant line sets may @ BASEPAN TAB REMOVAL be straight or with a 90 degree bend, depending upon installing the unit under a bedroom, kitchen, or picture window may be annoying to the customer since condensate and fog will occur during the defrost cycle. 4. Avoid locating the unit under the eaves or other overhead structures as sizeable icicles may form and the unit may be damaged by these falling icicles. B. LOCATION AND PREPARATION OF THE UNiT 1. When removing unit from the pallet, notice the tabs on the basepan. Remove tabs by cutting with a sharp tool as shown above in Figure 2, and slide unit off of pallet. 2. The unit should be set on a level support pad at least as large as the unit base pan, such as a ...

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