Carrier 30HR User Manual
Carrier
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Carrier
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Hermetic Reciprocating
Compressors
40 thru 160 Tons
зон R
160
30HR,HS040, 050,060
30HR,HS070thru 160
DESCRIPTION
These modern multiple-compressor liquid chilling pack
ages offer all the conveniences and economy of packaged
design, for use in chilled water air-conditioning systems and
various types of process cooling applications. Every
machine is completely factory engineered and assembled to
ensure a perfectly balanced refrigeration system. All com
ponents are matched to perform with high efficiency and
low power consumption. Only external water and electrical
connections must be completed to make the water-cooled
unit operational. Condenserless models require, in addition,
only refrigerant line connections to the remote condenser.
The water-cooled model (30HR) is a complete one-
package system with two condensers having built-in sub
coolers, and a direct expansion cooler with two refrigerant*,
circuits, one for each condenser.
Model 30HS is a condenserless 30HR, designed for use
with remote water-cooled, air-cooled or evaporative type
condensers Includes all features of the 30HR.
Multiple serviceable compressors are mounted on spring
vibration isolators to minimize sound and vibration trans
mission to the unit frame and the building structure.
Hot-gas mufflers dampen compressor gas pulsations, giving
smooth, quiet operation.
Each refrigerant circuit includes a thermal expansion
valve, a liquid line solenoid valve, a filter-drier and
combination liquid line sight glass and moisture indicator.
Compact construction allows passage thru 36-inch door
way. Little floor space required for installation.
FEATURES
•
Low Inrush and Running Current because of sequential
starting and stopping
Multiple Compressors*.
•
Easy to Service bolted-hermetic compressors.
•
Wide Range of Distribution Voltages (208 v to 600 v)
allowed by
Carrier Voltage Standards*.
•
Protection against Single-Phasing of compressor motors,
assured by manual reset,
magnetic-trip circuit breakers.
•
Internal Motor Protection against overheating, provided
by
quick-sensing elements
embedded in motor windings.
•
Optimum Control of Chilled Water Temperature for
closer
Capacity
Control
provided
by
Multiple-Step
Controller.
•
Balanced Wear on Compressors assured by
manual
transfer switch,
which changes the lead compressor in the
starting sequence.
•
Increased System Capacity, without raising horsepower
requirements, afforded by
refrigerant subcooling.
•
Protection against Refrigerant Migration and Oil Dilution
provided by
compressor crankcase heaters,
which are on
during compressor off cycle.
•
Reduced Power Costs because of partial load operation
at higher suction temperatures made possible by
two
separate refrigerant circuits.
©Carrier Corporation 1969
^Single feature sheet available
Form 30HR,HS-5P