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R
2-2
efRIgeRatIon
As shown in Figure 2-3, rotate and center the
shroud over the refrigeration outlet foam pad,
then fasten to the interior liner of the bottom.
Center shroud over refrigeration outlet
foam pad and fasten to interior liner.
After connections have been made, seal this
outlet thoroughly. Seal both the inside and the
outside. We recommend using an expanding
polyurethane foam insulation. Cover foam
with silicone to prevent water from entering
foam.
Multiplexing
Piping of merchandisers operating on the same
refrigeration system may be run from mer-
chandiser to case. d
o not run refrigerant
lines through merchandisers that are
not on the same refrigeration system
as this may result in poor refrigeration
Branch
control and compressor failure.
Interconnecting piping inside the merchandiser
must be located as shown below to allow room
for lifting the hinged fan plenums and for
clearance beneath the display pans.
Alternately, the interconnecting piping may
be run outside the merchandiser in the area
shown.
P/N 0515388_L
/ e
lectRIcal
Figure 2-3
U.S. & Canada 1-800-922-1919 • Mexico 01-800-890-2900 • www.hussmann.com
Refrigeration
Connection
Piping
Locations
Line Sizing
Refrigerant lines should be sized as shown on
the refrigeration legend that is furnished for
the store or according to ASHRAE guide-
lines. 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,
.
only
Pan
Fan Plenum
use long radius elbows
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