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 onepackage system with two condensers having built-in sub
coolers, and a direct expansion cooler with two refrigerant*,
circuits, one for each condenser.
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.
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.
• 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
Chilled Water Rise...............................................................................10 F
Entering Condenser Water Temp .....................................................85 F
Fouling Factor (Cooler and Condenser)
FOR 30HR (WATER-COOLED CONDENSER):
Enter the Ratings table marked 44 F Leaving Chilled Water
Temperature. Read down the left column (CAP ) to 80 tons
Note that either a 080 or 090 unit may be selected. Final unit
selection should be based on present and future job requirements
and the economics of the job. For this example, data from the
table is shown below for a 080 unit.
..............................................
............................................
PERFORMANCE DATA
44 F
0005
II Determine from Ratings table operating data for selected unit.
Saturated Discharge Temp (SDT)
Compressor Motor Power input (KW)
Total Heat Rejection (THR) ....................................................101.5 Tons
Cooler Water Flow ..................................................................192.0 Gpm
Cooler Water Pressure Drop (PD)
Condenser Water Flow
Leaving Condenser Water Temp (Lwt)...........................................95.6 F
Condenser Water Pressure Drop (PD)
For fouling factors other than .0005 refer to the Correction For
Fouling Factors table to: adjust the required capacity, correct
the compressor power input, and correct the actual condenser
water quantity required. ForA t (SDT — entering cond water
temp) other than 30 F, refer to curve.
FOR 30HS (CONDENSERLESS):
Use the same method, with the exception that the condenser
water data do not apply. For the remote condenser data, refer to
appropriate Carrier condenser data publication.
Ratings are based on .0005 fouling factor in the cooler and
condenser. Correction factors for other fouling factors are given in
the following table:
CORR FACTOR
FOULING
FOR CAPACITY
FACTORAND COND WATER
Condenser
1 02
1.00
Clean
.0005
Cooler
1.01
1 00
.001.98
.002
To correct capacity, adjust as follows:
a Adjusted required capacity (use to enter table)
_______
cooler factor x condenser factor
b. Actual compressor power input
= compressor kw (from table) x correction factor for
power input
c. Actual condenser water quantity
= gpm (from table) x cooler factor x condenser factor
-
required capacity
.94
________
CORR FACTOR
FOR
POWER INPUT
Condenser
98
1.00
1 03
1.10
Ratings based on: 10 F chilled water rise (suitable for 5 F to
15 F rise without adjustment), .0005 fouling factor in cooler (and
condenser on model 30HR), 15 F subcooling, and R-22.
Ratings in boldface type (44 F chilled water page) are in
accordance with the latest ARI Standard 590. Conditions:
30HR — 44 F leaving chilled water temperature with 10 F rise,
95 F leaving condenser water temp with 10 F rise and .0005 fouling
factor in cooler and condenser.
30HS — 44 F leaving chilled water temperature with 10 F rise,
.0005 fouling factor in cooler, 105 F condensing temperature for
remote water-cooled or evaporative condenser, 120 F condensing
temperature for air-cooled condenser.
Ratings based on 15 F subcooling. On 30HR units this occurs at
30 F A t (SDT — entering condenser water temperature.) When a
30HR (water-cooled condenser) unit is selected at conditions other
than 30 F A t use the curve below to correct the ratings table
capacity.
RATINGS
The following ratings tables are for both 30HR (water-cooled
condenser) and 30HS (condenserless) models. Condenser water data
apply to model 30HR only. Ratings beyond limits shown and/or
brine ratings are available in Carrier Application Data publications.
Ratings shown for Saturated Discharge Temperature (SDT) over
120 F do not apply to model 30HR.
Correction = Ratings table capacity x percent capacity correction
(from above curve).
Above 30 F At add the correction to rating table capacity.
Below 30 F At subtract the correction from rating table capacity.
30HS units matched with remote condensers which have greater
than (less than) the 15 F subcooling in the ratings, increases
(decreases) system capacity. To adjust capacity, multiply capacity
ratings by 0,94, then adjust this result upward by 0 4 percent for
each degree F of available subcooling
CAP. — Capacity
KW — Compressor Motot Power Input at Rated Voltage
Lwt — Leaving Watei Temp (F)
I
Shaded areas show ratings foi 105 F and 1 20 F condensittg temp and ratings with 95 F leaving condenser water temp with 10 F rise
PD — Pressure Drop (ft)
SDT — Saturated Discharge Temp (F)
THR — Total Pleat Rejection (tons)
‘■Ratings for SDT above 120 F do not apply to 30FIR
14
Page 15
#
CAPACITY CONTROL STEPSCONTROL SEQUENCE
TRANS SW POS 1*
UNIT
CONTR
30HR
STEPS
30HS
1
040
050
- „.
060
250.04
3
4
1
260 C6 4
380.08 6
4
1
267.0
383.0 10 6
4
1
2
070
0804
090466.7 126 6
100
no
120
140
160
NOTE: Circuits and compressors numbered from ieft to right when
*Transfer Switch, manuaily operated
tCompressor No. 2 on two-compressor units.
357.0844
4
5
6
7100.0 144
1
2
350.Q 8
5
6
7100 C 16
1
233 3
3
5
688.9 16
7100 0 18
1
230 06 6
340 08 4
4
5
6
790 0 18
8lOO.C
118 244
227 366
3
445 5
563.7 14 6
6
791 0
8
1
2
3
450 0
5
675 0 18
791.7 22
i 8
- —
129 G 6
257.0 12 6
3
4100.0
1
250 0
375.0
Li.
viewed from front of unit.
Ope
%
Cap.
Tot.
25 0
2
75.0
40 Ò
6
44
100.0 8 4
100.0 10
33.044
8
100.0
12 6 -
27.54
6
43 0
71 4 10
10
71 4
85.7
12
25.04
6
37.5
10
62.5
75 0 12
87 5 14 6 4
4
22.2
6
55 5 10
14 4 6 4
77.8
20.0 4" 4
50 0 10
14
70.0
80.0 166
20 6
8
36.3
10
72.8 166
20
100.0
22
4
16 7
25.06 6
41.7 10 4
12
16 6
66 7
100.0246
79 0 18
246 6
25 C 6 6
12
18
100 0 24
ider
r C
у Mr
Ck
Ckt
1
mpt
Co
ess
£
3t
1
2
_2_
2
_
4
-
—
—
_2_
6 -
„
—4—
4
_4—
_4_
— _6_
_
46_57 0
44
2
4 4
46
_
_4_
_ _6_
_
4
_
46_62 5
4 44
4
6
_
—
_
6 4
6 6 488 9 16 4 66
6 6 6
_
_ _ —
_ _
_ —
6
_
6
_
6 4
4
—_—
— —
4
_ —
6
_
__
6
6
6 6 6
_ _ _
4
_ _ _
-, —
6
—
_
6
6 6
— — —
6
_
6 6 6
_
66
6 6
6 6
TRANS SW POS 2*
s
2
or
4
_ —
275.0
4
-
— —
2
4
-
6~100.0
_
_
_
4
-
4—50 0
_
4_87 5 14 4 4
Ope
r C
%
Cap.
Tot.
25 o’ 2
50.04
6 24
100.0 8 4
20 0
60 06
80 08 4
100.0
33 04
67 0
83 0 10 4
—
2
10 64 -
8 4
12 6 - 6
14 32
27 54
43 C6 2 4
8
71 4 1024
85.7 12 2 4 6
100.0
14 4 4 6 -
25.044
37.56
8 4 4
10
75 0
12 4 4 4
6-100 0 16 6 4Ó
422 2 44
633 36 6
_
_
—
-
4
4 50 0 10_4 6
4 4 70.0
4 80 0 16
6
4 4 90 0 18 4 4 6 4
6 4 100.020 6
„
—
4 45 5
4
4 4 72 8
4
6
4
4
4 100 0 22
_
6 41.7 10
6 50.0
4 6 66.7
6 6
4 6 91 7 22 4
6 6
—
6
—
6
6
_
—
6
6
6
10 4
55.5
66.7 12
77 8 14 4 6 4
18 6 6 6
100.0
20.0 4
30.06
40.084 4
14 4 4 6
4
18.2
6
27 3
106 4
54 6 126 6
16
81 9 18 6 6
91.0 20 4 66 4
4
16 7
6
25 0
12
16 4 6 6
75.0 18 6 6 6
24
100.0
29 06
57 0 12 6
79 0 18 6
100 0 246 66 6
6
25 0
50.0 12
75.0 16
24
100 0
ELECTRICAL DATA
yl i
nde
rs
Ck
Ck
f 1
res
3t
2
2
2
4
-
—
2
_
2
_4_
_4—
_
6
_ _ _
_ _ _
_ _
4
4
_ _ _
_ —
_ _
_ _
4
6
_ _ _
_ — _
6
— _
4
6
6
4
6 4
4
4
6
6 6
6
6 6 4
_
4
6 4
6 6
Ó 6
6
—
6
_
6 6
6
_6_
6 6 6
♦ 2
sor
4
_
_
_
_
„
_
_
_
—
—
-
_
_
_
_
_
_
-—
—
—
—
—
_
_
_
—
—
—
—
6
—
_
—
Co
Ì
_
2
4
_ _4_
2
4
4
6
6
6 6
_ _
6
— —
— —
4
6
— _6—
_
—
66Ó 6
—^ —
— —
Ó
6—6 6
6
Controi circuit power is 115 voits; it can be suppiied from
separate source or thru field-instalied accessory transformer Crank
case heaters are in control circuit, ahead of the START-STOP
switch: they are always operative as long as control circuit power
switch is on. Heaters are not affected if unit shuts off by safety
device action.
All units, ЗОН R,HS040 thru 160, have multiple-step temperature
controller, factory set to maintain capacity control thru return
chilled water temperature. On units 30HR,HS070 thru 120 the
Capacity Control system includes a chilled water temperature
controller, a step controller, and solenoid-operated cylinder
unloaders on two compressors. All other units have a four-step
temperature controller. Units ЗОН R,HS040,050,060 have a
solenoid-operated unloader on each compressor. Units
30HR,HS140,160 have no unloaders.
Units 30HR,HS070 thru 120 have a separate control circuit
power switch, and each side of line is fused. Units
30HR,HS040,050,060,140 and 160 have one double-pole circuit
breaker, which serves as control circuit power switch and circuit
protection
Units 30HR,HS040,050,060 — Assume control circuit is powered
and circuit breaker is on. When START-STOP switch is turned to
"Start,” panel light will come on, control relays will be energized,
and timer motor will start. If temperature controller is calling for
cooling, no 1 compressor will energize in 0 to 5 minutes
depending on position of timer. If no 2 compressor is required, it
will start 15 seconds after no. 1. Timer motor stops at 15-second
point and temperature controller takes over, cycling compressors off
and on and loading and unloading cylinders in each compressor to
control cooling capacity in response to load requirements.
A recycle relay energized thru the timer ensures automatic
restart after power interruption, with a 5-minute delay from time
power is restored. Starting sequence same as above
Units 30HR,HS070 thru 120; When START button is depressed, a
24-volt transformer in the step controller is energized to provide
power to a low-voltage motor wired for rotating a camshaft
clockwise (unloading) and counterclockwise (loading) Factory-set
cams operate load switches which start or stop compressors and load
or unload cylinders to increase or decrease unit capacity as required.
Motor windings of camshaft drive motor are energized by a
balancing relay which contains windings in temperature bridge
circuit between chilled water temperature controller and motor
balancing potentiometer located at end of camshaft. When unit is
loading or unloading, chilled water temperatures correspond to
respective positions of the camshaft. Camshaft rotation is limited in
each direction by limit switches.
Step controller also includes a recycle relay which ensures that
camshaft is fully recycled to unloaded position at start-up or after a
power interruption. After camshaft has recycled to unload position,
temperature controller starts camshaft rotation in load direction
which starts compressors in sequence, assuring staggered compressor
starting. While unit is operating, the cams on the step controller
protect compressors against rapid cycling.
To restart after power interruption, START button must be
manually depressed
Units 30HR,HS140,160 — Assume control circuit is powered and
circuit breaker is on. When START-STOP switch is turned to
"Start," panel light will come on, control relays 1 thru 4 will be
energized and timer motor will start. If temperature controller is
calling for cooling, one compressor will energize after delay of 10
seconds to 6 minutes depending on position of timer. Depending on
cooling demand, the other compressors will energize at brief
intervals until load requirements are satisfied. Thereafter, tempera
ture controller will cycle compressors off and on to control cooling
capacity in response to load requirements
A recycle relay energized thru the timer ensures automatic
restart after power interruption, with a 5-minute delay from time
power is restored. Starting sequence same as above.
15
Page 16
ELECTRICAL DATA
COMPLETE CHILLER
VOLTS
NDSV
UNIT 30
HR
*^070
HS
VOLTS
NDSV
UNIT
30t
HR
HS
HR
HS
HR
HS
208
208
KW
WSAICFICI
040
52 2188524457
050
53 0196561 494174
060
64 2
232597494
070
75.4
080
090
100
107.6
no
1 18 2
120
128 8
140
159 2
160
190 0
040
050
060
08095.4
107 1
090
1 19 3
100
no
131 1
120
142.8
140
180 4
160
212 4
040,
050,
060
070
thru
120
140,
160
263601237
86 0
96 6
295633
328
■ :95
227
'>95
227
666
602
734
766
284 "! 887
1071
326
59.5
61 1
207
213568
531
74.2250605494
290617268559
83.6
322
355
213
246
36G
COMPR
06E
150
266
275
250
266
275
150
275
250
275
275
299
275
299
650
682626170
682
759
2'I3^ .
792
246
1116
KWFLALRA
20 9
31 3
32 1
24 074337104
35.5106457141
37 11 1 1
21 6
32 2101464141
23 9
35.7
32.1
47 5
37 1
53 1160636209
WSA
1 66
205
266
295
464
176 ■
204
17 c ■
204692194347
636
252
636
290
457190
494199
232535 4321 17 26821692
301
464
232
198
232
925636
233
6363241022 590
208
208
67
25090
97
457
103494
494
69
33296
77387107
109
464
103494141
145
111
636198
494153
230
220-240440-480
ICFICIWSA ICFICI
470
4108523520569
492
43288 24621669197173J275
523432104
544
573134286
601
544420
664
460
575
550-600Compr No.
WSA ICFICI
188
26221681209173J275
119271
149
301
164
272210
179332
96218B150A150
229J275
107
241
1 18
132
218
266
143
277J275
155
164
168
781590238392295189313236F299
977590
4804109323820576191
502432
592152
,
625420
695205349163
729
823590275420295
490
276
98
295221 392236F299
249
21678
135280
297
314
314210150251
187
367176
222
523295242
323
164
200 173J275
173
214
109
225
238J275A250
122
251J275F275J275
135
210 328
168J275A250
279J275F275
292
236F299F275F299
407236F299
INDIVIDUAL COMPRESSORS
230460
440-480
FLA
LRAMTA
301 15"41
44205
21664
46
155
216
52
15043
31
210
17549
35
21073
52
21664
295
65
216
52
295106
MTA
131
141
153
153
220-240
FLALRAMTA
^235^
60'
85410
91
432
70
3109833
41013448205
96
103432
30087
62
91
42012746
69
35097
103
420
91432
84
1 16
127
144
144
12746
129590178
103
432
144
144 .59020276
COMPR 06E USAGE*
Ckt 1 T Ckt 2
1
B266
234
_
B150
_
B150
-
J275
J275
J275
J275
A150
F275
A150
J275
J275
J275
J275F275J275
F275J275
F275F299
F299
B266
J275-
—
_
F299F299
B250
3250
J275
B250A250J275
J275
J275
J275
J275F275
J275
F299F299F299
575
550-600
62
46
67
73
64
88
73
FLA
_ 52
"7l
24
36
36
27
39
41
25
36
29
41
36
57
LRA
97
164
173
124
164
173
125
168
140
168
173
236
173
236
_
_
_
A150
A150
F275
F275
_
_
__
-
A250
A250
F275
F275
MTA
33~ '
50
5]
“ 38
54
58
'^35”"'
51
40
58
51
70
78
FLA ICF -
ICI
KW -
LRA -
MTA -
Terminal block for each of two circuits For 30HR,HS110,
upper WSA isckt 1, lower WSA is ckt 2 For other 4-compr
units, listed values are same for both circuits
Full Load Amps
Max Instantaneous Current Flow during starting (Any
point in starting sequence where sum of LRA for starting
compressor plus FLA for all running compressors is max )
Maximum Incremental Current Inrush (LRA for largest
compressor motor)
Maximum Power Input
Locked Rotor Amps
Must Trip Amps
NDSV — Nominal Distribution System Voltage (Application
Range). Motors and controls will operate satisfactorily
within ±10 percent of NDSV
WSA — Wire Sizing Amps per NEC, Section 430-24 Where one
terminal block is used, WSA is for all compressors Where
two terminal blocks are used (one for each circuit), WSA
is for each circuit
*Prefix letters: B,J — has unloader; A,F — no unloader. Circuits and
compressors numbered from left to right; when viewed from front
of unit
tCompressor motors for 30HR,HS040, 050, 060, 140, 160 designed
for solid state protection Compressor motors for 30HR,HS070
thru 120 designed for thermotector protection.
16
Page 17
ELECTRICAL DATA (cont)
GENERAL NOTES
1. Compressor models 1 50, 250 and 266 are 4-cyl; 275 and 299 are
6-cyl.
2 Max incoming wire size for 208, 230 volts Two- and three
compressor units have one terminal block, 3 wires, 350 MCM for
040-060, 500 MCM for 070-090 Four-compressor units have
two terminal blocks, 3 wires per block; 350 MCM for 100-120,
500 MCM for 140, 160
3 Max incoming wire size for 460, 575 volts; All units have one
terminal block, 3 wires; 0000 for 040-060, 350 MCM for
070-120, 500 MCM for 140, 160
4 Across-the-line start is standard for all units at all voltages To
obtain part-winding start, make following modifications
208-230 volts —
All units (040 thru 160) all compressors are factory wired thru
1. Wiring and piping shown are general points-of-connection guides only and are not intended to be used,
or to include all details, for a specific installation
2 All wiring must comply with applicable local and national codes
3 All piping must follow standard piping techniques Refer to Carrier System Design Manual for details.
GUIDE SPECIFICATIONS
Furnish and Install „ .factory-assembled 30HR water-cooled
(30HS air- or evaporative-cooled) multiple hermetic compressor
liquid chilling package(s) with a capacity of .tons using
Refrigerant 22 Unit shall cool gpm of water from _ F
to F,with. . gpm of condenser water entering at . For
when operating at F saturated discharge temperature Fouling
factor shall be _ in cooler and _ _ in condenser Cooler water
pressure drop shall not exceed _ ft Condenser water pressure
drop shall not exceed „ft
Construction and Ratings shall be in accordance with lastest ARI
Standard 590 and shall comply with USAS B9 1 safety code.
National Electrical Code, and applicable ASME Code
Compressors shall be reciprocating, serviceable, hermetic type,
and shall have an automatically reversible oil pump and an operating
oil charge Compressors shall be equipped with suction and
discharge shutoff valves, and shall be mounted on spring vibration
isolators Each compressor motor shall be cooled by suction gas
passing around the motor windings and shall have thermal pro
tectors embedded in the windings Manual restart of unit shall be
required after motor stoppage due to thermal overload Each
compressor shall be equipped with an insert-type crankcase heater
to control oil dilution during shutdown
For each compressor there shall be a factory-installed contactor
and a calibrated manual reset, ambient Insensitive magnetic circuit
breaker The circuit breakers shall open all three phases should an
overload occur on any phase
Cooler shall be shell-and-tube type, with removable heads; it
shall have two direct expansion refrigerant circuits Seamless 1/2-in
OD copper tubes shall be rolled into the tube sheets Shell shall be
covered with 1-in layer of closed-cell foam plastic, vapor barrier
insulation
Each Refrigerant Circuit shall include: hot gas muffler; com
bination moisture indicator and sight glass; refrigerant filter-drier;
liquid line solenoid valve; thermal expansion valve; charging valve.
Manufacturer reserves the right to change any product specifications without notice.
CARRIER
Tab 15
AIR CONDITIONING COMPANY • SYRACUSE,
Form ЗОНR,HS-5P Printed in U S A
Supersedes ЗОНR ,HS-4P, ЗОНR,HS-1 GS
All suction lines shall be insulated with close-fitting cellular
insulation Condenserless units shall have discharge line check valves
furnished for installations using remote condensers
Water-Cooled Condensers (2 per unit) shall be shell-and-tube
type with integral-finned copper tubes, and shall have removable
heads Construction shall comply with applicable ASME code Each
condenser shall be constructed to provide positive subcooling of the
liquid refrigerant A pressure relief valve, purge cock and a liquid
shutoff valve shall be provided on each condenser
Unit shall have a control box which contains high and low
pressure cutout switches for each refrigerant circuit; a manual reset
low water temperature cutout switch; a multiple-step chilled water
temperature controller to ensure staggered starting of compressors
and to provide _ ..steps of capacity control
Mounted on control box of 30HS units, as standard equipment,
shall be an oil pressure safety switch for each compressor The
control panel shall have mounted on it a control power indicator
light, individual compressor indicator lights; a START-STOP button
(switch); control power fuses (circuit breaker); a manual switch to
change starting sequence of compressors from one refrigerant circuit
to the other, and (except for 30HR ,HS040,050,060 units) a suction
pressure gage and a discharge pressure gage for each refrigerant
circuit
Unit shall operate on volt, phase, . Hz power It
shall be capable of operating within line voltage limits of
to . volts Control power shall be 115 V, 60-Hz
_____________________
Maximum Dimensions of Unit shall be length .width
, height
Accessories available for all size units shall include: oil-pressure
safety switches (HR only), control circuit transformer; chilled water
flow switch; insulated enclosure panels For all sizes except
30HR160: condenser water manifold package For 30HR,HS040,
050,060 units only: two gage panels, each with a suction and a dis
charge pressure gage
NEW YORK
6-69
Codes C and MA
Catalog No 523-013
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