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R
2-6
efRIgeRatIon
ABOUT QUICK CONNECT COUPLINGS
Quick Connect fittings are provided on
both the case inlet and outlet lines, and on
Hussmann's TCMXA404A, TCMXB404A,
TCMXC404A and TCMXD404A series of
con densing units. The case and condensing
unit are pre-charged with the correct amount
of refrigerant, and the lines are sealed.
Connecting the Quick Connects together
breaks the seals to connect the refrigera-
tion lines of the unit to the case. The Quick
Connects must be properly torqued to avoid
refrigerant leaks.
CONNECT LINES
Mount the suction line and liquid line to the
condensing unit. When ready to connect,
remove protector caps and plugs from the
Quick Connect couplings. If necessary, care-
fully wipe coupling seats and threaded surfac-
es with a clean cloth to prevent the inclusion
of dirt or any foreign material in the system.
Lubricate male half diaphragm and synthetic
rubber seal with refrigerant oil. Thread the
coupling halves together by hand to ensure
proper mating of threads. Use proper size
wrenches (on coupling body hex and on union
nut) and tighten until coupling bodies
"bottom" or a definite resistance is felt.
INSULATE REFRIGERANT LINES
Suction lines are insulated to prevent conden-
sation; extra insulation is provided to cover
the field connected tubing sections. These
exposed sections must be covered with
insulation. Check that all suction lines are
adequately covered with insulation, as some
insulation may have been dislodged during
shipping and installation. Avoid locating the
tubing above the electrical box to prevent
condensation from dripping onto electrical
components.
P/N 0527427_M
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U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
U
se a toRqUe wRench to tIghten the
qUIck connect coUplIngs to these
settIngs to get a leak
Coupling Size
(inches)
3
/
8
7
/
8
-
.
pRoof seal
Foot Pounds
(Ft. Lbs.)
10–12
50-65
Outlet Quick Connect
Inlet Quick Connect
Inlet Quick Connect
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