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P/N 0501930_A
REFRIGERANT
The correct type of refrigerant will be
stamped on each merchandiser's serial plate.
The case refrigeration piping is leak tested,
factory sealed and pressurized. Before
making refrigeration hookups, depress the
universal line valve to ensure that coils have
maintained pressure during shipment.
WARNING
!
Refrigeration lines are under pressure
and should be depressurized before
attempting to make any connections.
REFRIGERANT PIPING
Connection Location
The refrigerant line connections are at the right-
hand end of the merchandiser (as viewed from the
back) at the back of the canopy.
Multiplexing
Piping of merchandisers operating on the same
refrigeration system may be run from case to
case. D
O NOT RUN REFRIGERANT LINES
THROUGH MERCHANDISERS THAT ARE NOT ON
THE SAME REFRIGERATION SYSTEM BRANCH
this may result in poor refrigeration control and
compressor failure.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
REFRIGERATION / ELECTRICAL
as
Refrigeration Connection
Case-to-Case
Electrical Connection
Piping
Location
D6X-URLE
Pan
Floor
Line Sizing
Refrigerant lines should be sized as shown on
the refrigeration legend that is furnished for the
store or according to ASHRAE guidelines.
Refer to the information on the next page for
branch line piping of Hussmann Equipment.
Oil Traps
P-traps (oil traps) must be installed at the base of
all suction line vertical risers.
Pressure Drop
Pressure drop can rob the system of capacity. To
keep the pressure drop to a minimum, keep the
refrigerant line run as short as possible using a
minimum number of elbows. Where elbows are
required,
USE LONG RADIUS ELBOWS ONLY
Ultra Low Front Rear Load
C
O
O
L
E
R
W
A
L
L
Fan
Plenum
.
Excel
2-1
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