Hussmann ASC-LG, Инструкция по установке и эксплуатации

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Rev. 0506
5
Plumbing
WASTE OUTLET AND P-TRAP
The waste outlet is located off the center of the case
on one side allowing drip piping to be run lengthwise
under the fixture.
A 1-1/2” P-trap and threaded adapter are supplied with
each fixture. The P-trap must be installed to prevent
air leakage and insect entrance into the fixture.
NOTE: PVC-DWV solvent cement is recommended.
Follow the manufacturer’s instructions.
INSTALLING CONDENSATE DRAIN
Poorly or improperly installed condensate drains
can seriously interfere with the operation of this re-
frigerator, and result in costly maintenance and prod-
uct losses. Please follow the recommendations listed
below when installing condensate drains to insure a
proper installation:
1. Never use pipe for condensate drains smaller
than the nominal diameter of the pipe or P-trap
supplied with the case.
2. When connecting condensate drains, the P-trap
must be used as part of the condensate drain
to prevent air leakage or insect entrance. Store
plumbing system floor drains should be at least
14” off the center of the case to allow use of the
P-trap pipe section. Never use two water seals
in series in any one line. Double P-traps in se-
ries will cause a lock and prevent draining.
3. Always provide as much down hill slope (“fall”)
as possible; 1/8” per foot is the preferred mini-
mum. PVC pipe, when used, must be supported
to maintain the 1/8” pitch and to prevent warp-
ing.
4. Avoid long runs of condensate drains. Long
runs make it impossible to provide the “fall” nec-
essary for good drainage.
5. Provide a suitable air break between the flood
rim of the floor drain and outlet of condensate
drain. 1” is ideal.
6. Prevent condensate drains from freezing:
a. Do not install condensate drains in contact
with non-insulated suction lines. Suction lines
should be insulated with a nonabsorbent insu-
lation material such as Armstrong’s Armaflex.
b. Where condensate drains are located in dead
air spaces (between refrigerators or between
a refrigerator and a wall), provide means to
prevent freezing. The water seal should be
insulated to prevent condensation.
DIPPER WELL
An optional NSF approved dipper well may be installed
on the back of case. The exact location of the dipper
well will be determined by the customer.
1. Ensure dipper well is properly sealed by
applying NSF certified silicone to seam between
dipper well and back cover of case.
2. The plumbing required must be done by a
certified plumber.
Refrigeration
GELATO/SOFT ICE CREAM
These display cases are designed to hold product at
temperatures that will allow operators to scoop or dip
gelato and soft ice cream into cones, containers or
dishes. The temperatures will fall in the range of plus
4F to plus 12F depending on amount of sugar and
butterfat in product. The temperature and condition
of product must be checked after being in case the
first four hours of operation. Because of the sensitive
condition of these products, defrost is very critical. The
fans do NOT run during defrost periods. The maximum
time is 20 minutes for electric and 10 minutes for hot
gas and Kool Gas. The fans are on a 2 minute delay
after defrost to avoid adding heat to case.
If, because of ambient conditions, the defrost must be
changed, amount of defrosts not time is necessary.
i.e., 3 by 20 minutes instead of 2 x 40 minutes.
REFRIGERANT TYPE
The standard refrigerant will be R-404 unless other-
wise specified on the customer order. Check the serial
plate on the case for information.
Piping for more than one case on a condensing
unit is run underground with either common suction
and liquid lines from the machine room or individual
suction and liquid lines joined together in the machine
room.
REFRIGERATION LINES
LIQUID SUCTION
3/8” O.D. 5/8” O.D.
NOTE: The standard coil is piped at 5/8” (suction); however, the store
tie-in may vary depending on the number of coils and the draw
the case has. Depending on the case setup, the connecting
point in the store may be
5
/
8
”,
7
/
8
”, or 1
1
/
8
”. Refer to the particular case you are hooking up.
Refrigerant lines should be sized as shown on the
refrigeration legend furnished by the store.
Install P-traps (oil traps) at the base of all suction line
vertical risers.
Pressure drop can rob the system of capacity. To keep
the pressure drop to a minimum, keep refrigerant line