Hussmann ISCGG-D, Инструкция по установке и обслуживанию

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Page 9
SECTION 4
REFRIGERATION - REMOTE MODELS
REFRIGERANT TYPES
These refrigerators are equipped for operation using the refrigerant listed in the following table
unless otherwise specified on the factory order. The correct type of refrigerant will be stamped
on the refrigerators serial plate located in the display area.
MODEL REFRIGERANT
All Models – ISF / GG / RGG R–22 or R(404a), R507
ISMGG / RGG R–22, R134a
REFRIGERANT PIPING
Refrigerant line connection sizes:
All models
LIQUID
LINE 3/8” OD
SUCTION LINE 5/8” OD
OUTLET LOCATION
The refrigerant line outlet is located at the right hand end of the refrigerator beneath the display
pans. After connections have been made, seal this outlet thoroughly both on the inside and the
outside. An aerosol dispensed urethane type of insulation is recommended.
LINE SIZING
Refrigerant lines should be sized as shown on the refrigeration legend prepared for the store and
as (furnished by the owner). If a legend has not been furnished, refer to Section 12 of the
Hussmann Application Engineering Manual for guidance.
OIL TRAPS
P-traps (oil traps) must be installed at the base of all suction line vertical risers.
PRESSURE DROP
Pressure drop reduces capacity of the refrigeration system. To minimize pressure drop, use
proper size tubing, keep the refrigerant line runs as short as possible and use a minimum number
of elbows. Where elbows are needed, use long radius elbows only.