Leak Testing The System - Lennox EL23XCV Series Manual

IMPORTANT
The Environmental Protection Agency (EPA) prohibits
the intentional venting of HFC refrigerants during
maintenance, service, repair and disposal of appliance.
Approved methods of recovery, recycling or reclaiming
must be followed.
IMPORTANT
If this unit is being matched with an approved line set
or indoor unit coil that was previously charged with
mineral oil, or if it is being matched with a coil which
was manufactured before January of 1999, the coil and
line set must be flushed prior to installation. Take care to
empty all existing traps. Polyvinyl ether (PVE or POE)
oils are used in Lennox variable-capacity units charged
with HFC-410A refrigerant. Residual mineral oil can
act as an insulator, preventing proper heat transfer. It
can also clog the expansion device and reduce system
performance and capacity. Failure to properly flush the
system per this instruction and the detailed Installation
and Service Procedures manual will void the warranty.

Leak Testing the System

When using a high pressure gas such as
nitrogen to pressurize a refrigeration or air
conditioning system, use a regulator that can
control the pressure down to 1 or 2 psig (6.9
to 13.8 kPa).
Leak detector must be capable of sensing HFC
refrigerant.
Refrigerant can be harmful if it is inhaled. Refrigerant
must be used and recovered responsibly.
Failure to follow this warning may result in personal
injury or death.
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WARNING
IMPORTANT
WARNING