Air Purging Of The Piping And Indoor Unit - Carrier 42LUVH025N Service Manual

Caution:
Oil Traps: Oil traps must be fitted to vertical suction risers where outdoor unit is above indoor unit. Fit a trap at
the bottom of the vertical rise and then at 5m intervals.
If the outdoor unit is installed below the indoor unit – no trap is required in such installation.
If the units are installed at the same level – no trap is required in such installation.

6.4 Air purging of the piping and indoor unit

Required tools:
Hexagonal wrench; adjustable wrench; torque wrenches, wrench to hold the joints and gas leak detector.
Note:
The air in the indoor unit and in the piping must be purged. If air remains in the refrigeration piping, it will affect
the compressor, reduce the cooling capacity, and could lead to a malfunction of unit.
Be sure, using a torque wrench to tighten the service port cap (after using the service port), so that it prevents
the gas leakage from the refrigeration cycle.
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