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Cassette Air Handler
16
REFRIGERANT PROCESSING
Finish all pipe connecting before
proceeding to charging the system.
Follow the instructions in the outdoor
unit for line evacuation, opening service
valves, and nal charge adjustments. Op-
eration charts and charge tables can be
found in the EMI Condenser IOMs.
IMPORTANT:
It is illegal to discharge refrigerant into
the atmosphere. Use proper reclaiming
methods and equipment when installing
or servicing this unit.
1. Clean the ends of tubing and insert into
ttings.
2. Protect the valves by wrapping with a wet
rag "heat sink" before brazing.
3. The use of a heat shield is recommend-
ed to protect the paint. (A heat shield
can be made from scrap metal.)
4. Braze tubing into ttings.
5. Attach manifold set.
Refer to Charts in condenser manual to
“ne tune” the refrigerant charge.
Heat sink
Shield
S1CA
Shown
Manifold Vacuum Pump Micron Gage
S1CA
Shown
6. Evacuate line to 500 microns or less to
ensure all moisture has been removed
and there are no leaks.
7. Once certain of a good evacuation and
leak free joints, back-seat the valves
(counter-clockwise) to open and allow fac-
tory charge to ll lines and indoor unit.
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