Trane 2MCC05-C, Installation Manual

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MS-SVN056C-EN 35
Outdoor Unit Installation
Piping connection
Note:
• Do no allow the entry of air, dust or other pollutants into the pipe lines during installation.
• The connecting pipe must not be installed until both indoor and outdoor units have been properly
installed.
• Keep all piping dry and protected against any incoming humidity.
• To avoid leaks, apply insulation material on both sides of gas and liquid lines.
1. Drill a hole on the wall of sufficient size that allows the entry of conduit.
2. Join the connecting pipe plus electric cables firmly together forming a bundle with the use of appropriate
tape. Insert this bundle through the drilled hole entering from the external side of the wall. Make sure the
bundle will not be damaged.
3. Connect the pipe lines as indicated in the following section.
4. Use a vacuum pump to purge the air. Refer to the following corresponding section.
5. Open the shutoff valves in the outdoor unit to allow the flow of refrigerant into the indoor unit.
6. Verify the absence of any leaks. Check all couplings with a leak detector or with the use of soapy water.
7. Cover all line couplings with pipe a sleeve made of insulation material, and further cover these couplings
with the appropriate insulation material to avoid leaks.
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PRECAUTION!
Ensure that all exposed parts of the flare type couplings are properly covered with insulation material, as well
as all refrigerant piping on the liquid side and on the gas side. Verify the absence of any visible spacing. The
lack of insulating material could cause water condensation.
Piping connection
1. Flaring
• With the use of a tube cutter, cut the pipe. See following graphic.
• Insert a flared nut over the pipe and proceed with pipe flaring.
• Refer to the following table to see spacing dimensions for the flared nuts.
2. Nut adjustment
• Place connecting tubes in their appropriate places; tighten the nuts first with the hand, and then tighten
them simultaneously using two open end wrenches. See next graphic.
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PRECAUTION!
Excessive tightening torque can damage the tube couplings and insufficient tightening torque can
provoke leaking. Determine the tightening torque in the following table.
Uneven Irregular With debris