Trane 2MCC05-C, Руководство по установке

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MS-SVN056C-EN 37
Outdoor Unit Installation
Note:
– Folding angle should not exceed 90ª.
– It is preferable to fold the pipe in its middle section.
– Do not fold pipe more than three times.
– Ensure you use the same insulation material when you acquire piping (thickness to be more than
9mm/0.35 in).
2. Piping installation
• Make a hole in the wall large enough to allow the introduction of conduit.
• Join the connecting pipe plus electric cables firmly together forming a bundle with the use of
appropriate tape. From the external side of the wall, insert this bundle through the drilled hole. Make
sure the bundle will not be hampered.
3. Piping connection
• Purge air using a vacuum pump. See the following corresponding section.
• Open the outdoor unit shutoff valves to allow the flow of refrigerant towards the indoor unit.
• Verify the absence of leaks. Check all couplings with a leak detector o with soapy water.
• 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.
4. Air purging
• Loosen and remove nuts from A and B shutoff valves and connect the manifold to the charging port of
shutoff valve A. Verify that both A and B valves are closed.
• Connect charging hose to the vacuum pump.
• Totally open manifold low pressure valve.
• Activate vacuum pump. As pumping is starting, partly loosen nut on valve B to verify if air is penetrating
(a change in the operation of the pump will be heard and gauge indicator will move below zero). Tighten
nut once more.
• Once pumping has ended, close manifold low pressure valve and shut off the vacuum pump. After 15
minutes of pumping have elapsed, confirm that manifold indicator reads -1.0X105 Pa (-76cmHg).
• In order to open valves, loosen and remove caps on A and B shutoff valves. Replace caps once more.
• Disconnect hose from A valve charging port and tighten nut once again.
Note: Both shutoff valves must be opened before the operation test. Each air
conditioning unit will show two different sized shutoff valves.