The 19 Series: Built to save energy,
save you money and get the job done right
Dr. Willis Carrier invented centrifugal refrigeration in 1922
and today, more than half a century and 25,000 machines
later. Carrier hermetic centrifugal liquid chillers still lead
the way in comfort air conditioning and process cooling.
What’s more, the modern day 19 Series centrifugals are
specifically designed to afford significant dollar savings on
utility bills, in every way possible.
The Carrier 19 Series centrifugal design philosophy has
always been to offer a variable line which meets each unique
specification while at the same time maintaining low first
costs and low operating costs. Incorporated in this
philosophy are such features as the 19 Series inline
impeller design, hermetically sealed compressor-motors,
gear drives and refrigerant options. The success of this
concept can be seen in the 25,000 plus machines which
have been applied to date.
Carrier’s hermetic centrifugals have always used various
refrigerants at different tonnage ranges in order to keep
the heat exchanger size and cost down. Now, over and
above the low first cost concept, Carrier offers refrigerant
options to meet your specific job requirements in the most
efficient way possible.
Tbe full hermetic line consists of four models, each with
a cycle, refrigerant and tonnage range specifically matched
to your application demands. From 100 tons (352 kW) to
2,000 tons (7034 kW), the Carrier hermetic centrifugals are
capable of performance at levels of .85 KW/Ton (3.0 KW/
kW) to .65 KW/Ton (2.3 KW/kW) and lower, depending on
design conditions. With features such as mix-match capa
bility, high performance heat exchangers, refrigerant
options, multi-pass water boxes as well as tbe 19 Series her
metic compressor designs, a Carrier centrifugal can be opti
mized to meet any job requirement. The “Low Energy Con
sumption Curve” illustrates performance levels possible
within the tonnage capabilities of the 19 Series hermetic line.
You get the most efficient, most reliable, energy-conscious
and completely packaged machine for your particular appli
cation. The hi-lift capabilities (up to 100 F) make the 19
line ideally suited for brine chilling, ice rink applications
and process cooling. In areas with cooling tower restric
tions, you can even specify a hi-lift Carrier centrifugal for
use with closed circuit water condensing systems. The
versatile Carrier centrifugals are also designed for low-lift
requirements of today’s energy-conscious market.
Not only can Carrier Sales Engineers optimize your
refrigeration requirements but they can optimize your total
system as well. Thru various specialized computer pro
grams, for example, a Carrier Sales Engineer can vary your
leaving chilled water temperature a degree or increase your
chilled water temperature differential from 10 to 14 F and
show how the total system is affected with respect to
operating costs. In this complex market of low energy con
sumption as well as low first cost, Carrier can offer you
productive ways to reduce your costs.
motor life, saves on
operating costs, increases
electrical efficiency
• Hermetic design
• Gear-drive compressors
• In-line impeller design
• Refrigerant-cooled motors
• Solid state capacity control
• Thermal purge
• 55 F (13 C) condenser water
• Flash and thermal economizer
• Multi-pass water boxes
• Compressor-motor-heat exchanger mix-match
Engineering excellence
provides lower first costs
and years of trouble-free
service
• Single-unit construction
• Factory-wired oil pump starter
• Permanent shipping bases
• Prepiped motor lubrication package
• Storage tank
• Factory start-up
• Integral chilled water sensor
• Elapsed-time indicator
Carrier’s computer approach to matching the machine
and capacity to a specific application gives you access to
literally thousands of condenser, compressor, cooler,
refrigerant and pass combinations. Initial costs arc lower
because you select only what you need — a smaller
package. Operating costs are reduced because the mix
matching of components allows lower energy consumption
selections. In addition, a Carrier Sales Engineer has the
ability to optimize selections, by varying conditions, thru
the use of the Performance Programs. Should your job
requirements demand performance other than what is
shown in this catalog, contact your Carrier Sales Engineer
(refer to page 50 for the office nearest you). Thru com
puterized selection he will be able to design your “custom
built” hermetic centrifugal.
D
Computer selection saves
time, cuts costs
Full line centrifugal service
centers assure optimal care
of your unit
Convenience options offered
for added energy efficiency,
‘tailor-made’ systems
Carrier centrifugals use refrigerant
(R-11, 114, 12 or 500) in a standard
compression, single- or two-stage
refrigeration cycle. System water in
the cooler is chilled as its heat is
transferred to refrigerant at low tem
perature and pressure. As heat is re
moved from the water, the refrig
erant vaporizes and is drawn into the
compressor at a rate controlled by
the degree of the guide vane opening.
As the compressor raises the vapor
pressure, the saturation temperature
of the refrigerant rises above that of
the condenser water. Refrigerant
vapor is discharged directly into the
condenser, where relatively cool
condenser water removes heat from
the vapor, causing it to condense
again to liquid. The heated water
leaves the system, returning to a
cooling tower or other heat rejection
device. The liquefied refrigerant then
leaves the condenser, draining into
a chamber where a variable metering
device regulates refrigerant flow and
maintains a liquid seal to prevept
vapor from passing into the cooler.
As the refrigerant liquid goes thru
this metering device, part of it vapor
izes because of reduced pressure,
cooling the remaining liquid to the
temperature at which the cycle
began.
Energy-saving, precision design: extends
compressor motor life, saves on operating
costs, increases electrical efficiency
Hermetic design
Hermetic compressor design keeps
motor free of airborne dirf and mois
ture. It also isolates motor to keep heat
and sound from equipment room.
Eliminates shaft seal with its potential
refrigerant leakage.
■ Gear driven compressors
Gear driven compressors allow more
flexibility in selection than direct drive
because gear ratios can be fitted to
19CB
particular application. Gear driven
compressors also allow optimum im
peller speed, higher head applications
and increased operating efficiency.
Multi-pass water boxes
The complete 19 Series line offers 1,2,3
and 4 pass water boxes on both the
coolers and condensers. The result is
better heat transfer when needed —
reducing operafing costs. In addition,
all pass arrangements are available at
no extra cost.
Refrigerant-cooled motor
All 19 Series compressors have
refrigerant-cooled motors that operate
at low, even temperatures throughout
the motor windings to insure long motor
life at high electrical efficiency.
19DH
Solid state capacity control
The capacity control module offers
solid state compactness and reliability,
with smooth and precise capacity mod
ulation from 100% to 10% of full load,
without hot gas bypass. It is more
efficient in maintaining leaving water
temperatures than any other type of
control. The convenient, centrally
located control center provides fully
automatic machine operation, com
plete with a full complement of safety
interlocks. Check operating status at a
glance, easily monitor all system oper
ating points. The highly sensitive,
factory-installed thermistor probe, solid
state amplifier, and guide vane actuator
are precisely matched and fully re
sponsive to changes in leaving chilled
water temperature. They help to main
tain your selected design temperature
throughout all operating load condi
tions. The result is efficient, trouble-free
operation with longer life expectancy.
All control connections can be made
quickly to a single terminal strip; and
once the solid state control has been
19EB
19FA
calibrated, control settings may be
changed without additional field
calibration.
55 F (13 C) condenser water
The Carrier metered refrigerant design
allows the 19 Series chillers to operate
efficiently with condenser water tem
perature as low as 55 F (13 C) without
condenser water bypass or mixing
tanks. The 55 F (13 C) condenser water
means reduced head pressures which in
turn means lower horsepower require
ments The end result is lower energy
costs and lower annual operating costs.
In addition, the absence of a condenser
water bypass and mixing tanks add up
to lower first costs and lower installation
costs.
m
LZZZ
Compressor-motor-
heat exchanger mix-match
Each model within the 19 Series line
has the capability of mix-matching
various heat exchanger sizes with an
array of compressor-motor combina
tions. As illustrated, mix-matching
allows you to mount a small capacity
compressor on a large heat exchanger.
This design concept optimizes specified
conditions, improving full and part load
performance.
19DH
In-line impeller design
In-line impeller design, with diaphragm
between stages, allows for more flexi
bility in compressor component selec
tion, which results in first cost savings
on other machine components. Also
provides higher head capabilities, pre
vents uneven loading and allows for
routine, easy maintenance.
— Motor End Bearing
— Gear Journal Bearing
— Driving Gear Bearing To Housing
— Thrust Clearance on Gear
Bearing (each side)
— Pinion Gear Journal Bearing
— Pinion Gear Bearing To Housing
— Thrust Bearing
LEGEND
8
9
10
11
12
13
— High-Speed Journal Bearing
— Front of Impeller to Volute Wall
— Impeller Eye to ID of Inlet Ring
— Labyrinth Behind Impeller to
Spacer Ring
— Labyrinth Behind Transmission
and Motor Shell
— End-Bell Bearing Labyrinth
Flash and thermal economizer
Two-stage models thru 1,600 ton
(5627 kW) capacity feature a thermal
economizer. The thermal economizer
shown brings warm condensed refriger
ant into contact with the inlet (coldest)
water tubes where water as low as 55 F
(13 C) may be flowing. This low tem
perature water subcools the refrigerant
so when it moves on in the cycle it
has greater cooling potential, thus im
proving cycle efficiency and reducing
power/ton requirements. In addition, all
two-stage models employ a flash econo
mizer, not shown, to further improve
cycle efficiency. The liquefied refrig
erant leaves the condenser thru a
metering device and flows into the flash
economizer where the normal flashing
of part of the refrigerant into vapor is
used to cool the remaining refrigerant.
The flash vapor is diverted directly to
Thermal purge
The thermal purge effectively removes
air, water, and noncondensables from
the refrigerant system, promoting
greater operating efficiency and lower
maintenance costs. It needs no water
connections or air-cooled condenser.
It performs normal system purging
during periods of operation on R-11 and
R-114 machines. In addition, on R-11
machines it doubles as a pump for leak
testing or machine evacuation after
servicing. It also provides recovery of
refrigerant under normal purging
conditions.
19FA THERMAL ECONOMIZER
the compressor’s second stage so that it
does not have to be pumped thru the full
compression cycle. The flash econo
mizer generates savings and signifi
cantly lowers operating costs.
16 — Refrigerant Liquid Drain Line
17 — Condenser Water Inlet
J6 17
LEGEND
19DH
Engineering excellence provides lower first
costs and years of trouble-free service
Single unit construction
Carrier centrifugals are the most com
pletely packaged units of their kind.
Chiller is shipped as a single unit com
plete with integral storage tanks where
required. Ready for quick connection
to water and electrical sources at the
job site. (Compressor is field installed
on the 1,600-2,000 ton (5627-7034 kW)
models; the heat exchanger and
economizer are factory assembled.) In
addition. Carrier centrifugals arrive at
the job site with controls mounted and
pre-wired including the chilled water
thermistor. All control connections can
be made to a single terminal strip. Single
unit construction assures minimum in
stallation time, minimum installation
costs.
Factory-wired oil pump starter
Models available for U.L. listing feature
a factory-wired oil pump starter The
starter is factory wired to the machine
with overloads and contactors sized by
Carrier for U.L. compliance. The entire
assembly is factory mounted to save in
stallation time and field labor costs.
Permanent shipping bases
Rigging can be done faster and the need
for costly concrete bases and supports
is eliminated with 19 Series permanent
shipping bases.
Prepiped motor lubrication
package
The oil pump, motor, filter, cooler,
pressure controls, and electrical ter
minals are all prepiped and wired to
save on-site labor costs and installation
headaches.
Storage tank
The storage tank is an integral part of
the machine design on all R-12 and
R-500 units. No additional pipings,
fittings or valves are needed. No in
creased floor space is required which
saves you first cost dollars. Servicing or
testing may be easily accomplished
without time-consuming transfer to
separate containers which saves you
service dollars. Models using R-114
offer the storage tank as an option at
minimal cost. They are constructed to
ASME code requirements and include
all necessary connections for refrig
erant transfer system.
Factory start-up
Carrier start-up service for your ma
chine is included in the purchase price.
This assures you of trouble-free, work
ing installation right from the start. It
includes refrigerant transfer, leak test
ing and precision calibrating of the solid
state control settings and safety control
settings.
Integral chilled-water sensor
A chilled-water thermistor probe is fur
nished, installed in the leaving chilled
water nozzle as part of the machine’s
standard control system. A signal from
the sensitive solid-state device to the
central control module automatically
initiates immediate adjustments to com
pressor capacity. This eliminates the
need for accessory pneumatic equip
ment, separate sensing devices, saves
you initial equipment cost, and makes
installation easier, more economical. As
part of the machine’s standard control
system, it does not have to be specified
in another portion of the job, and thus
further reduces first and installation
costs.
Elapsed-time indicator
Every Carrier centrifugal features an
elapsed-time indicator to provide an
immediate and constant record of
machine operating hours. No over- or
underestimating when scheduling
maintenance. Mounted outside of the
control box for easy visibility.
Full line centrifugal
service centers assure
optimal care of your unit.
When you specify Carrier, you get a complete service
organization unequaled in the industry. Carrier Service
j Operations is a national organization in over 150 key loca
tions throughout the United States and Canada. This is
the one service organization that has grown up with the
air conditioning industry. Today, more and more owners
rely on Carrier Service Operations for an in-depth, practical
approach to energy conservation. This extraordinary full
time commitment to quality maintenance and service
proves Carrier’s interest in continued customer satis
faction. Your centrifugal, in fact your entire HVAC system,
will be in the care of people who are fully versed on the
design, manufacture, installation, start-up and maintenance
of your equipment.
Computer selection means “custom built”
machinery — saves design time and lowers
cost.
Supplementing the selections in this publication, Carrier
has, for your convenience, developed computer selection
and performance programs for 19 Series hermetic units
that incorporate 800,000 combinations of condenser,
compressor, and cooler components. Computerization of
this data allows you to take full advantage of Carrier’s
tremendous job-matching flexibility.
Only Carrier features the truly optimized selection and
performance programs which are far superior to the limited
combination, manual/ computer compromise selection
systems. With Carrier you have the ultimate flexibility —
you can specify an entering OR a leaving condenser water
temperature; a temperature differential or a water flow rate.
This unique service takes a minimal amount of time and
it’s completely free when you select Carrier.
Remember these advantages you’ll get from using
Carrier’s computer selection service when choosing your
19 Series hermetic centrifugal:
• Fast, accurate equipment selection.
• Comprehensive data, comparing best first cost and best
operating cost selection.
• Accurate matching of components at full and part load.
• Reliable forecasting of owning and operating costs.
• A clear picture of how the chiller functions with the
other components of your system.
• The capability to vary conditions, optimize selections
and define part load conditions with the performance
programs.
• Comparative flow rates applied to various condenser
water temperatures to assist you in selecting the cooling
tower.
• Savings all year long.
Convenience options offered for added
energy-efficient, ‘tailor-made’ systems
Pneumatic capacity control
Complete pneumatic control systems
are available, if desired, for the centri
fugals in the 100 to 2000 ton (3527034 kW) sizes.
Safety indicator panel
This accessory provides the operator
with an instant trouble-shooting capa
bility. Seven panel lights monitor high
motor or bearing temperature, low
refrigerant temperature, high con
denser pressure, starter (overloads and
protective devices), low water flow
(chilled or condenser), low oil pressure,
low chilled water temperature. When
safety is tripped, the light goes on. Panel
does not affect the integrity of the
central control system, is easily con
nected to the machine without disturb
ing factory wiring. In addition, a remote
sound or light alarm can be easily field
installed to alert you, should a safety
light be tripped on the indicator panel.
Only a simple two-wire hook-up is
required.
Selective insulation
The 19 Series machines are adequately
insulated at the factory to meet most
application demands. However, addi
tional insulation packages are available
for specific machine applications.
Isolation assembly
A combination of soleplates, jacking
screws, leveling pads and neoprene
pads are available in isolation packages.
Specify this option for installations
requiring special mounting. Isolation
pads are shipped at no charge.
Remote control set point
Select or alter machine chilled water
temperature from a remote location by
specifying this optional solid state
control.
Pumpout unit
Factory mounted, complete with
starter, controls and all necessary inter
connecting refrigerant piping. Permits
easy transfer of refrigerant between
machine and storage tank. Speeds
servicing and minimizes downtime. On
multiple machine applications, a single
pumpout unit saves first costs. Not
required for R-ll units.
Lead-lag control
Desirable when two or more machines
are installed in series or parallel. Cen
tralized control features the following
capabilities;
• parallel operation
• series operation with split or common
point control
• two or more chiller operations
• uneven sized chillers working
together
• independent control of chillers both
manually and automatically
• automatic lead-lag operation
• reassignment of lead-lag hierarchy
• automatic standby
Panel lights indicate system operating
mode.
Hot gas bypass
When a machine is expected to run at
light load and elevated condensing tem
peratures or at minimum load for ex
tended periods of time, a hot gas bypass
is recommended. The hot gas bypass is
factory mounted and wired, manual or
automatic. It virtually eliminates com
pressor surging at extreme part-load
conditions and smooths out the ma
chine’s full operating cycle, whatever
the load fluctuation.
Additional energy-saving options
Chilled water self-reset control
This device permits the leaving chilled water tempera
ture to rise as the load on the machine decreases.
The higher the leaving chilled water temperatures, the
less work the compressor is forced to do.
The power monitor control
An electronic, energy-saving device which continuously
monitors building electric demand and sheds preselected
loads in stages during peak power usage periods. The
power monitor control reduces power consumption and
minimizes power demand charges.
Chilled water reset-dual input
A device that causes the leaving chilled water tempera
ture control set point to change in proportion to a change
in a remote temperature such as return chilled water or
outdoor air temperature.
Adjustable stepped-rcset control
A device that permits leaving chilled water tempera
ture to rise in predetermined adjustable steps. Operator
is in control of demand limit so amount of reset is not
dependent on machine load but on the amount of change
of resistance in the probe circuit.
Stepped power demand limiter
This option makes it possible to limit power demand in
four ways:
1. At start-up each chiller can be held to a preselected
maximum current draw for any time period of up to
one hour.
2. During normal operation, chiller load can be auto
matically reduced in up to 3 stages in response to
increased total building power consumption.
Chiller demand can semi-automatically be lowered in
3.
a single stage in response to increased total building
power consumption.
4.
Chiller demand can also be lowered manually.
Stepped power demand limiter minimizes the likeli
hood of getting demand charges. Also has timer which
increases flexibility of operator. Operator can change
demand limit without being at controls and can also
adjust demand limit manually.
#
10
PASS-RISE TEMPERATURE ADJUSTMENT (F/C*)
*To convert the temperature adjustment factor to °C, divide by 1 8
Metric
tech
Area
cm2100
cm3
m31 0
m2
Length
mm1.0
mm0 03937
mm0 003281
m1 0
m
Mass
kg
kg
Power
kcal/h1 163
kcal/h3 968Btu/h0 2931
HP metric
HP metric
Mcal/h1 163
Mcal/h
X =
0 1550
10 76
3 281ft
2 205
0 9863
0 3307
English
unitX =
ip2
«2
in
ft
lb
HP(550
Ton refr3 517
645 2
0 09290
25 4
304 8
0 3048
1 0
0 4536
0 7355
0 7457
CONVERSION TABLE
SI unit
mm2
mm2
m2
m2
mm
mm
mm
m
m
kg
kg
w
w
kW
kW
kW
kW
Metric
tech
Pressure
mm w g 4°C
mm w g, 4°C
mm Hg 0°C
mm Hg 0°C
kg/cm^
kg/cm^
Temperature”
Interval
°C
y
Velocity
m/s
m/s
__
m/s _
Volume/Time
m®/h
m^/h
m^/h
L/h
__
L/h
Metric
tech
Temperature
“C
°C
0 03937
0 03937
^14 22
1 8
3.281
196.9
0 5886
4 403
4 403x10-3
Conversion
factor =
(»Cx18)+32 °F
English
unit
inHjO 39 2 F
in Hg 32“ F
psi
°F
ft/s
ft/min
fH/min
U S gal/min
U S gal/min
nEhglish
Un»
0 009806
0 2491
0 1333
3.386
98.07
6 895
1 0
0^5556
1 0
0 3048
0.00508
0 2778
0 4719
0 06309
2 778x10-“'
0 06309 _
Conversion
factor =
“C+273 15
(°F-32)-r1.8
SI unit
kPa
kPa
kPa
kPa
kPa
kPa
K
°C
m/s
m/s
m/s
Us
L7s
tVs
Us
Us
____
SI unit
K
°c
_
#
12
Using the 19DH,EB,CB model numbers
When ordering 19DH, 19EB or 19CB chillers, use the
ordering code described below. Chiller nozzle arrange
ment and compressor voltage must be listed separately.
Using the 19FA model number
When ordering 19FA chillers, use the ordering system
described below.
List chiller model in first 4 code number positions
Obtain Unishell or heat exchanger size from step V of the Selec
tion Procedure and enter in positions 5 & 6
Obtain compressor size from step V of the Selection Procedure
and enter in positions 7 & 8
Obtain motor size from step VII of the Selection Procedure and
enter in positions 9 & 10
-----------------------
13FA563-B-500-2425-L-EC
Cooler -
Heat Exchangers (HE)
Condenser-
Base Size (S, small or L, large)
Motor Size (MS)-------------------------------------------------------------
1 List chiller model in first 4 code number positions
2 Obtain compressor size from step V of the Selection Procedure
and enter in positions 5, 6 and 7
3 Also from step V of the Selection Procedure, obtain gear size
and refrigerant used Enter gear size in position 8, next enter
refrigerant in 9-11 (May only need to use 9 & 10 )
4 Obtain heat exchanger size from step V of the Selection Pro
cedure and enter the cooler size in positions 12 & 13 and the
condenser size in positions 14 & 1 5
5 Base size is indicated in position 16
6 Obtain motor size from step VII of the Selection Procedure and
enter in positions 17 & 18
Part-load energy requirements
At part load, chiller energy requirements are aifected by
many variables, such as degree of load, chilled water flow,
condenser water flow, entering condenser water tempera
ture, leaving chilled water temperature, and the percentage
of compressor loading at design conditions.
Because of these many variables, a typical part-load
curve (% Standard Rating Tons versus % Standard
Rating Kw Input) may have appreciable inaccuracies
when applied to a specific chiller and set of conditions.
Carrier, therefore, does not recommend the use of
such curves in making operating cost studies.
Instead, thru computer analysis. Carrier will provide
you with accurate and detailed information on the energy
requirements for your selected chiller at the expected
jobsite conditions.
Energy savings can be significant if the chiller can be
operated with a relatively low entering condenser water
temperature. And, since conditions of design load and
design wet-bulb temperature can occur rather infrequently,
the opportunity for such savings exists during most of the
operating season. Each chiller is capable of operating
efficiently with entering condenser water temperatures
down to 55 F (13 C). This capability assures you of both
energy conservation and excellent part-load performance,
because “custom-made chillers” give the best part-load
11702150 i
1170
1225
13062400 i
130123901084
13122410
13882550 i
138825501157
1405
1405
1513
1513
1513
1535
1535
1530
1660
16603050 1
16823090
1715
2250
2580 !
2580 !
2780
2780 1
3050
3100
3150 >
R-500
(lb) j
2150 1
2780 i
2820 j
2820 !
2810 f
AREA
TO
INSULATE
{k9>
975
975200 i
1021200 :
1089
1093213 1
1157213 :19.8
1170213 i
1170213 i
1261213 i19.8
1261213 i
1261213 i
1279
1279
1275
1383
1383
1406
1402
1429
(sq ft) i
200 i18.6
200 •
200 i18.6
'■”'Tî3~T“
213 ;19.8
213 1
213 i
242 !
242 i
242 i
242 1
242 1
(m*)
18.6
18.6
18.6
19.8
19.8
19.8
19.8
19.8
19.8
19.8
22.5
225
22.5
22.5
22.5
Electriccd data
MTR
DM
DP
EA968225070251800
EB
EC11882770865522186930
ED
MAX
KW
7461768
8751768
10802510784520106275
13103050954024407630
460 V575 V
LRA
StarDeltaStar
1.39 FLA/Kw1.11 FLA/Kw
1.38 FLA/Kw
5523
55231414
LRA
Delta
1414
1.10 FLA/Kw
4418900
4418
56201346
2400 V4160 V
LRALRA
.270 FLA/Kw
1060
.264 FLA/Kw.153 FLA/Kw
1502866
1660958
18281053
31
.156 FLA/Kw
519
613
770
6900 V
LRA
.094 FLA/Kw
313
370
.092 FLA/Kw
469
523
577
636
FLA — Full Load Amps
KW — Compressor Power Input (kilowatts)
LRA — Locked Rotor Amps
NOTE: Overload Trip Amps = FLA x 1 08
19CB Selection data
19CB*
1600-2000 TONS
(5627-7034 kW)
1600 Ton Selections (5627 kW)
ADJ LVG.
CONO. WTR
TEMP.
iC)¡4.4!
(F)
85
90
92.5
95
97.536.4
100
HE7777
CS
29.4RE114114
MS
KW1144
HE77
CS4141
RE114
32.2
MSBYBY
KW
HE7777
CS
RE114114114
33.6
MS
KW
HE7777
CS4141
RE114114114
35.0
MSBYBYBY
KW12921257
HE77
CS4141
RE114114
MSBYBY
KW
HE
CS
RE
37.8
MSXXBY
KW
1700 Ton Selections (5979 kW)
ADJ. LVG.
COND. WTR.
TEMP.
(F) ; (C)
85 : 29.4
90 ; 32.2RE
92.5 ' 33.6 RE114114
95 35.0RE114114
97.5 36.4 RE
;
100 : 37.8
HE7777
CS414141
RE114114114
MSBYBYBX
KW1223
HE77
CS
MSBYBYBY
KW13001264
HE7777
CS
MSBYBY
KW13441304
HE
CS414141
MS
KW
HE7777
CS
MS
KW14671392
HE
CS424141
RE114114
MS
KW1514
ADJUSTED LVG. CHILLED WATER
40
4244
fS.S)(6.7!(7.2)
41
4141
BXBX
1120
7777
114114
12081180
4141
BYBY
12481215
777777
1340 13011267
77
7777
4241
114
114114
1409134913101294
ADJUSTED LVG. CHILLED WATER
4042
(4.4!
114114114
XXBY
138813471312
114114
XXXX
XX
TEMPERATURE — F (C)
¡5.6!
1195
41
4141
777777
4141
7777
42
4141
777777
XXXX
1446
r“lÌ5”
7777
114
BX
1098
BX
1160
BY
11891176
4141
1226
4141
114114
BYBY
41
BYBY
4445
(6.7!
1174
1236 1221
114114114
BYBY
1272
114
BY
114114
BY
1355
114114
13991379
41
114
BX
1088
77^
4141
114
BX
114811371118
7777
4141
114
BY
77
7777
114
BY
1213
1251
7777
4141
1141 14
(7.2)
77
7777
41
114
BX
11631152
4141
114
BY
7777
4141
1257
7777
41
114114
BYBY
1295
77
7777
41
BY
1338
77
41
XXBY
(7.8)(8.9)
7777
41
114
BX
10791057
7777
4141
1 141 14
BXBX
77
41
1 14
BXBX
11691149
41
1 14
BY
1198
77
4141
1141 14
BYBY
1238
BYBY
12781249
46
(7.8)(8.9)
4141
1141 14
BX
77
1 141 14
BYBY
12091186
77
41
BY
1243
77
4141
1280
4141
114
BYBY
1320 1291
77
4141
1 14
1365 1331
41
114
BX
77
41
1 14
77
41
114
BY
1176
77
1210
77
41
114
48
77
BX
1128
77
41
77
41
1 14
BY
1218
77
114
BY
1253
77
114
77
114
BY
1800 Ton Selections (6330 kW)
ADJ. LVG.
COND. WTR.
TEMP.
(F)(C)
8529.4
90
32.2RE
92 5
33.6
95
35.0
97.5
36.4
100
37.8
HE
CS41
RE
MSBY
KW
HE
CS
MS
KW
HE
CS42
RE
MSXXXX
KW
HE
CS4241
RE
MS
KW
HE
CS42
RE
MSXX
KW
HE
CS42
RE
MS
KW
ADJUSTED LVG. CHILLED WATER
TEMPERATURE — F (C)
i (4.4)(5.6)(6.7)
77
777777
114
131812831252
114114114
XXBYBYBY
140113611322
114114
1492
1 14
XXXX
15361447
1 14
15851537
114
XX
1597
4141
114114114
BYBY
7777
414141
77
1400
7777
114114
77
114
XXXX
887777
114114
XX
15831504
7777
77
41
41
114
BY
13631344
41
XXXX
14021382
7777
424141
114114
14511427
4241
XX
7777
77
1900 Ton Selections (6682 kW)
ADJ. LVG.
COND. WTR.
TEMP.
.Jfl _
85
29.4RE
90
32.2
92.5
33.6
95
35.0
97.536.4RE
100
37.8
LEGEND
CS — Compressor
GR — Gear-Refrigerant
HE — Heat Exchanger
KW — Power Input
MS — Motor Size
RE — Refrigerant
UN — Unishell
32
(C)
HE
CS41
MSXXXX
KW
HE
CS42
RE
MSXX
KW
HE
CS42
RE
MSXX
KW
HE
CS
RE
MS
KW
HE
CS
MS
KW
HE
CS
RE
MS
KW
ADJUSTED LVG. CHILLED WATER
4042
(4.4!(5.6)
114114
14221374
1 14114
15641465
114114114
15931562
TEMPERATURE — F (C)
77
77
787777
*
1590
**
*
(6.7)(7.2)
7777
41
BYBY
1341
7777
414141
XXXX
14161395
4241
XXXX
1460
7877
4241
114114
XXXX
15101485
XXXX
1541
*
XXXX
1574
41
114114
114114
78
4141
114114
88787777
4141
114114
(7.2)
<7.8)(8.9)
41
BY
1238
41
1141 14114
1308
4141
114114
BY
41
1141 14
XX
77
41
114114
XXXX
1479
45
77
41
1325
77
XX
77
41
114
XX
1439
77
41
114
XX
77
1535
1566
7777
41
1 14114
BY
1224
7777
4141
BYBY
1293
7777
BYBY
13301300
7777
4141
BY
1369
77
7777
4141
114114
XXXX
14081372
7777
4141
14551417
46
(7.8)48(8.9)
7777
4141
114
BYBY
13091278
7777
4141
114
XXBY
13781350
7777
4141
114114
XX
14181384
7777
4141
114114
XX
1463 1421
77
4141
114
XXXX
15111466
4141
114114
XXXX
1 563
1201
1513
41
BY
1264
41
114
77
114
BY
1338
114
XX
114
14
XX
XX
77
114
t
2000 Ton Selections (7034 kW)
ADJ. LVG.
CONO WTR.
TEMP.
(C)
85
29.4
90
32.2
92.5
33.6
95
35.0
97.5 36.4
100 37.8
HE
CS
RE
MS
KW
HE '
CS
RE
MS
KW
he'
CS
RE
MS
KW
'he'"
CS
RE
MS
KW
he'
CS
RE
MS
KW_
he'
CS
RE
MS
KW
ADJUSTED LVG. CHILLED WATER
TEMPERATURE - F (C)
40
42
44
(4.4>
(5.6)
87
41
114
XX
1461
^ 88
42
114
XX
1590
(6.7)
8'7
41
114
XX
1414
41
114
XX
1486
'"si"
41
114
XX
1534
88'
41
114
XX
1586
'T'45 "
i (7.2)
I '8'7
I
I 1 14
88'
41
XX
1397
88'
41
114
XX
1462
88"
41
1 14
XX
1508
41
1 14
XX
1558
(7.:8)
1380_
1458
1484
1530_
1582
46
87
41
114
XX
87
41
114
XX
88'
41
114
XX
88
41
114
XX
88
41
114
XX
48
(8.3)
87
41
114
BY
1350
"s'f '
41
114
XX
1423
87
41
114
XX
1462
88
41
114
XX
1486
' 'is'
41
114
XX
1533
88
41
114
XX
1582
LEGEND
CS
GR
Gear-Refrigerant
HE
Heat Exchanger
KW
Power Input
MS
Motor Size
RE
Refrigerant
UN
Unishell
Compressor
COOLER
I 0
20 30 40 5060
20 40 60
FLOW RATE.GPM (lOO's)
10 20 30 40 50 60
255075100
FLOW RATE L/s
80
200 25
I50g
100^
50 (/)
LlI
cc
0 CL
200
I 50
! 00
50
0
CONDENSER
0 10 20 30 40 50 60 70
80
Q_
Û
3
60
''
3PASS
40
20
80
40
20
/
zi
0 10 20 30 40 50 60 70 8 0
|4 PASS
T
/
/'
2550
I ^ ^ ^ p
!
3PASS
/
1
/
z'
■■
255075100125
3A
2
|2 PASS
; 7 CONucNScR
iSi
75100
8 CONDENSER
,1 PASS
P
200
150
100
50
0
200
150
100
Ï-
- 50
- 0
*For additional tonnage and performance selections contact your nearest Carrier Sales Office (see page 50)
33
19CB Selection data (cont)
Physiccil data
r
MACHINE
SIZE
(cooler & condenser)
77
78
87
88
Electrical data
MAX
MTR
BX
BY
XX
1176
1376
1602
KW
VOLTS440
FLA/Kw
LRA Star
LRA Delta
OLTA
FLA/Kw
LRA Star
LRA Delta
OLTA
FLA/Kw
LRA Star
LRA Delta
OLTA
RIGGING
WEIGHT
(Heavy Section)
(lb)
34,40015,60464,240
34,900
35,400
35,900
1 423
2100
6600
1.537
1 437 1 38 1 318
2650
8400
1.549 1.48 1.422
1 428
3000
9400
1 543
(kg)
15,830
16,057
16,284
460480550
1 37
1 305
2190
2280
6950 7300 5300 1310
1.47
1.410 1.230
2775 2900 2100
8800
9150
1.37 1 305 1 141
3100
3200
9750
10100
1 47 1 414
OPERATING
(lb)
64,930
65,430
66,110
1 139272
1680
1 150
6650
1.242
2400
7500
1 234296
WEIGHT
2300
—
.294
274
—
1370
.296
273
—
1750
(kg)
29,139
29,452
29,679
29,987
4160
735
_ ^ _
830
^.164
" 15Ì
1050
164
OPERATING
CHARGE
R-114
(lb)(kg)
54ÒÒ
5400
5400
5400
244Q350 i 32.5
2449350 ■; 32.5
2449
2449
AREA
TO
INSULATE
(sq ft) i
350 ;
350 i 32.5
(m2)
32.5
FLA — Full Load Amps per ea kw input
KW — Compressor Power Input (kilowatts)
LRA — Locked Rotor Amps
OLTA — Overload Trip Amps per ea kw input
f
34
Typiceil piping and wiring
LEGEND
— Cooling Tower Fan Starter
1
Condenser Water Pump Starter
2
Cooler Water Pump Starter
3
Pilot Relay
4
— Oil Pump Starter
5
6 — Fused Disconnect for Oil Heater and Thermostat
7 — Fused Disconnect for Purge System
8 — Fused Disconnect
9 — Compressor Motor Terminal Box
10 — Compressor Motor Starter
11 — Cooler Water Pump
12 — Condenser Water Pump
NOTES:
1
Wiring and piping shown are for general point-of-connection only
and are not intended to show details for a specific installation
Certified field wiring and dimensional diagrams for specific 19
Series machines are available on request
All wiring must comply with applicable codes
Refer to Carrier System Design Manual for details regarding piping
techniques
A separate 115-volt fused power source for controls is required
unless compressor motor control is furnished with a transformer
Provide a separate fused 115-volt power source for oil heater and
thermostat
35
Nozzle arrangements
19DH
COOLER
NOZZLE NO.
Pass
*3-pass available on 50 thru 78 Size Unishells only
t4-pass available on 61 thru 78 Size Unishells only
Complete nozzle arrangement consists of the cooler arrangement
followed by the condenser arrangement For example
In
11 ”8 ”
1
4t
8
12
97
12^7 "
9
12
97J
2-pass cooler with leaving nozzle Number 10 = Arr R
1 -pass condenser with leaving nozzle Number 2 = Arr X
Complete nozzle arrangement consists of cooler arrangement
followed by condenser arrangement For example
In
11
1
I
8
12 ”
9
9731z
12
o
o
910
12 ■
A
9
2-pass cooler with leaving nozzle Number 10 = Arr R
1-pass condenser with leaving nozzle Number 2 = Arr X
Complete nozzle arrangement = RX
ARR NOZZLE NO
Out
s'2
11
10
7 ~
Q ^
R 2
T -
u ^
H ' \ '
7
J ^
(j$ (¡2)
MOTOR END
CONDENSER
Pass
1" ^
52
6
34i\F
61N
6^4k'
31
Out
5w
4 ~
ARR
X
V
L
36
19FA19CB
COOLER
NOZZLE NO
Pass
In
.
T2’
1
15
1 1 '
13
14
16
11
13
14
16
11
13
14
16
Complete nozzle arrangement consists of coder arrangement
followed by condenser arrangement For example:
2-pass cooler with leaving nozzle Number 14 = Arr F
1-pass condenser with leaving nozzle Number 3 = Arr R
Complete nozzle arrangement = FR
Out
12
13
11
16
14
14
16
11
13
13
11
16
14
ARR
À
B
c
D
E
F
G
H
J
K
L^
M
N
P
CONDENSER
NOZZLE NO.
Pass
In
1
10
ARR
Out
3
8
8
51
4
9
4 "22
97
Q
3RNOZZLE NO.
S
6T
7
u17
V
w
X
.
.......
COOLER
PassInOut
1317
141812
2
1416
18
141 1
1815
FRAME
SIZE
7 & 8
Cooler
Condenser
Complete nozzle arrangement consists of the cooler arrangement
followed by the condenser arrangement For example
2-pass cooler with leaving nozzle Number 16 = Arr S
1 -pass condenser with leaving nozzle Number 8 = Arr E
Complete nozzle arrangement = SE
'“Î
ARR
13
R
16
S
T
12
u
V
w
NOZZLE SIZE (in.)
Schedule 20 pipe
Passes
2
16
12
16
14
CONDENSER
NOZZLE NO.
Pass
1
3
101010
10
n Out
3 ~ 8
8
2
7
1
10
6
1
6
10
ARR
3
4
9
5
5
E
X
Y
Z
0
N
A
C
37
Dimensions
MOTOR STATOR AND
ROTOR REMOVAL
(SEE SERVICE
CLEARANCE FOR
MOTORS TABLE)
19DH
SPACE FOR SERVICE
AND ACCESS
ALLOW 2'-0"(6IOmm) MIN
CLEARANCE ALL AROUND
UNIT
Certified dimension drawings available on request
UNISHELL
SIZES
19DH
42,44,46 ’
50,51,53,
55,57
61,63,65
71,72;73
76.77,78
‘Length shown is chiller with nozzle on drive end only For length with nozzles at both ends, add 6-1/4 in (159 mm)
II.
Length*
14-3-3/4
14-3-3/4
14-3-3/4'
14-3-3/4'
14-3-3/4'
A
4362
4352
"4362
4352
4352
SERVICE CLEARANCE FOR MOTORS (ft-in.)
DESIGN
CENTER
VOLTAGES
208,230,
460,575
2400 & 4160
Service access should be provided per ANSI Standard B9.1, NFPA
70 (NEC) and local safety codes Clear space adequate for inspec
tion, servicing and rigging of all major components of the chiller is
required Selected component removal spaces, with no allowance
for access or rigging are shown in phantom
Unishell
4i2 thru 65
50 thru 78
50 thru 78
6lThru'78
SIZE
Cornpr I Motor
i 2 thru 38 I AA thru AE
43 thru 68
72 thru 98
43 thru ës
72 thru 98
DIMENSIONS (ft-in.) (mm)
Width
B
3- 7-1/4
3- 7-1/4
4- 5-1/2 ■
4-11-1/4 '
4-1 i-1/4'
.........
CB thru CL
CD thru CQ
CA thru CL ' - , „
1099
1099
'Ts'sé''
1505
1505
AE
6- 4-3/4
6-10-1/2
8- Ò-Ì/2
8- 9-1/2
8- 9-1/2'
CLEARANCE
_
.....................
(in.)
1-1
1-3-1/4 387
B c5 thTë'ë^2-°;^
Height
330
Cooler Passes ^ Condenser Passes
..
1
6
8
8
1088
MACHINE CONTACT SURFACES WITH
OPTIONAL SOLEPLATES
UNISHELL
SIZE*
19DH
42-57
61-65
71-78
*See machine informative plate
r^Al
i 3-103-8
; 914
^ 3-11
: 1194
i 4- 75-1
Ì1397 1549
DIMENSIONS (ft-in.) (mm)
B
1118
4-50-5
1346
NOZZLE SIZE (in.)
4 ■ ■
2 '3
4
—
66
666io
86
8
D
C
0-4 0-4
102;
102
0-3'
1277638152!
0-30-10-50-2
0-5
1277625
12" "'3'
6
—
8
—
6108
Ì210'8'
E
38
0-4 0-2-1/2
102!
0-1-1/2
0-1-1/20-6'
127
F
4
6
8" “6"
0-1-1/2
—
4
6
G
64
38
50
38
19EB
{225 mm)
Certified dimension drawings available on request
COMPR
SIZE
51-8985,87
*IVIachine length including nozzles on one end Add 8 in (203 mm) if
nozzles are on both ends
fWith high-voltage(2400-4160 v)terminal box, add 1 ft-2 in (356 mm)
to dimension A if any nozzles are on suction end (shown) Add 6 in
UNISHELL
SIZE
19EB
71,72 ^14-14293
73,75
76,7714-1/243056-8
81,82,8314-14293
85,87
8914-0
81,82,83
89
Length
A*t
14-1
14-1-1/4 :
14-1
14-1-1/4 :
14-04267
4293
42998- 2-1/2
42678- 4-3/4
4293
4299
DliyiENSIONS (
Width
B
6- 1-1/2
6- 5-1/2
7-10-3/4
7-10-3/4
8- 2-1/2
8- 4-3/4
1867
1969
2032
2407
2502
2559
24079-3
2502
2559
MACHINE CONTACT SURFACES WITH OPTIONAL SOLEPLATES
ft-in.J (mm)
Height
ct
8-0
2438
8-4
2540
8-6
2591
9-0
2743
9-3
2819
9-6
2896
28194- 2-1/2
9-6
2836
9-9
29724-10-1/2
FLOOR CONTACT SURFACE
SPACE FOR SERVICE AND ACCESS
;ZLE
D
3- 4-3/8
3- 6-3/810761088
3-10-3/8
4- 2-1/2
4- 6-5/8
4-10-1/2
4- 6-5/8
(152 mm) only, if suction-end water boxes are blank
^Subtract 1 ft-1 in {330 mm) from height on high-voltage (2400-
4160 v) machines
UNISHELL
SIZE*
71,72
73,75
76,773- 4
81,82,83
85,87
89
*See machine informative plate
1026
1178
1283
1387
1486
1283
1387161210
1486
2-10
3- 0
3-8-1/8
4-0-1/41226
4-4-1/8
C("lwier
10
12
14
161210816
16
Ì4
1612
DIMENSIONS (ft-in.) (mm)
A
8643-10
914
1016
1121
13245-3-7/8
N02
’asse
2
8
88
10
10
12816
12
10To
12
4- 0
4- 4i 1321
4-7-7Z8
5- 0
3
6
SIZE
(in,:)
Cor
s
4
6
61210
6121088
6
6
816121010
8
B
dense r Pas 3ses
"^8
10
16
“T6
16121212
: 1168
: 1219
1413
15240-5-7/8149
1622
8
8
12
1010
12
1010
12
12
lo^^
C
^ 0-6
0-6
0-6
0-5-7/8143
0-5-7/8149
4
12
10
152
152
152
6
8
Service access should be provided per ANSI Standard B9 1, NFPA 70
(NEC) and local safety codes. Clear space adequate for inspection,
servicing and rigging of all major components of the chiller is required
Selected component removal spaces, with no allowance for access or
rigging are shown in phantom
39
Dimensions (cont)
—
-----
5
-A OR A'
19FA
SPACE REQUIRED FOR TUBE
REMOVAL, EITHER END
SPACE REQUIRED FOR FLOAT
BOX MAINTENANCE
SPACE REQUIRED FOR REMOVAL
OF STATOR AND ROTOR
Certified dimension drawings ava
COMPR
SIZE
BASE
SIZE
COOLER
ShortLong
10,11,1240,41,42
421
thru
469
421
thru
569
531
th ru
569
14,15,1644,45,46
18,19
20,21,22
24,25,2654,55,56
27,28,2957,58,59
SIZE
48,49
50,51,52
DIMENSIONS (ft-in.) (mm)
CONDENSER
SIZE
10,11,12
14,15,16
10,11,12
14,15,16
18,19(4382)
14,15,16
18,19
14-4-1/2
20,21,22
18,19
20,21,22
24,25,26
20,21,2214-8-3/4
24,25,26(4480)
27,28,29
24,25,26
27,28,29
LENGTH*
A
A'
18-11-1/4
(5772)
19- 0-3/4
(5810)
19- 1-1/2
(5829)
19- 6-1/2
(5956)
WIDTH
B
8-6
(2591)
10-0
(3048)
HEIGHT
CDD'
7-4-1/2
7-6-1/4
7-2-3/4
8-1-1/4
8-1 1
9-8-1/4
9-9-3/4
10- 3
10- 5
11-0
11- 2
7- 7
7- 9
7- 7
7- 9
9- 3
2248
2292
2203
2311
2362
2311
2362
2470
2718
2819
2953
2991
3124
3175
3353
3404
MACHINE CONTACT SURFACE
SPACE FOR
Tubes
Cooler *
12-3
(3734) (5207)
17-1
Cond
E
12-3
(3734) i (305)
Econ
1-0
‘Length including nozzles on both ends Dimensions A' and D' apply to machines with long coolers (Sizes 40 thru 59)
40
NOZZLE SIZES
NOZZLE SIZES (in )*
COOLERCONDENSER
SIZESIZE
10,11,12
40,41,42
14,15,16
44,45,46
18,19
48,49
20,21,22
50,51,52
24^25,26~
54,55,56
27,28,29
57,58,59
*5- and 6-in nozzles are Schedule 40 8-, 10-, and 20-in nozzles are
Schedule 20 12-in nozzles are 250W, 31 2W, or 375W 14-, 16-, and
18-in nozzles are 312Wor 375W
10,11,12
14,15,1610
18,1912
20,21,22
24,25,26
27,28,29201412
Cooler
PassesPasses
1
2
106
86
1081410
16
181012
41
3
5510865
612
10
1010
1020
Condenser
234
161812
12
14
86
10108
12
8
10
10
MACHINE CONTACT SURFACES
6
8
BASE
SIZE
]
1 12-11
3937
1 13-2-3/4
4032
DIMENSIONS (ft-in ) (mm)i
1
1 8-6
1 2591 : 203 Î
1 10-0
1 3048 i 305 j2438 1 152 Ï1
^”'1 TM "1
0-8 1
1981 j
1 1-0 1
8-0 I
N iP 1
. 0^ j
102 i
0-6 >
3734. 1
12-2-3/4 1
12-3 i
Q
^ -_o~~
305
1-0
305
SERVICE CLEARANCE FOR MOTORS (ft-in.)
COMPRMOTOR
SIZE
421CB-CN1-9
thru
469
531
thru
569
Service access should be provided per ANSI Standard B9 1, NFPA 70 (NEC)
and local safety codes Clear space adequate for inspection, servicing and
rigging of all major components of the chiller is required Selected com
ponent removal spaces, with no allowance for access or rigging are shown
in phantom
SIZE
DB-DH1-11-1/4
DK-DM
DF-DH1-11-1/4
DK-DP
EA-ED
SERVICE SPACE REQ'D (ft-in
G diamH length
2- 7-1/4
3- 7-1/2
3- 7-1/2
3-10-1/4
1-11-1/4
1-11-1/4
2- 2-3/4
533
591
591
591
591
879
3-2
3-2
794
9S5
n05
96S
110S
'175
41
Dimensions (cont)
19CB
ENTRANCE SPACE FOR
HEAT EXCHANGER
PACKAGE (COOLER,
CONDENSER a ECONOMIZER)
<E_ COMPRESSOR
Certified dimension drawings available on request
HEAT
EXCHANGER
COMBINATION
(cooler & condenser)
77,78,87,88
HEAT
EXCHANGER
(cooler & condenser)J
77,78,87,88
Service access should be provided per ANSI Standard 89 1, NFPA 70 (NEC) and
local safety codes Clear space adequate for inspection, servicing and rigging of
all major components of the chiller is required Selected component removal
spaces, with no allowance for access or rigging are shown in phantom
Length
A
18-0-7/8 114-4-5/8 1 9-10 16-0-5/8
5509' "p TiSSS • I 2997 | 4893
16-11
■ 5Î66 " '
DIMENSIONS
(ft-in ) (mm)
Width I Height
B 1 C
KL1 MN !iPQ
0-6-3/4
.......
iW2943
9-7-7Z8
Cooler
Passes
2
12
CONTACT SURFACES (ft-in.) (mm)
1 1-32-11-3/8 16-8
■ 1 381
NOZZLE
SIZES (in.)
4
10
Condenser
Passes
_2_T3__
14 110
899 ;2032 i 152
-REFERENCE LINE
SPACE FOR TUBE REMOVAL
EITHER END)
SPACE FOR REMOVAL OF
MOTOR STATOR AND ROTOR
MACHINE CONTACT SURFACES
MINIMUM
SERVICE
CLEARANCE
(ft-in.) (mm)
Tubes E
Cooler
15-3
4648 Î4140 12794 i 27.43 1 3145
0-6
Motor
Cond
13-7
9-2
I
R
I 1-7-1/2
: 495
j____________1
F
MINIMUM
ENTRANCE
(ft-in.) (mmj
Width
G
9-0
REQ.
Height
H
10-4
s
5-10
1778
42
Electrical data (all models)
CONTROL TRANSFORMER REQUIREMENTS
MODEL
Standard Met
Control Circuit
Inrush va1800
Sealed va
Purge System
Inrush va
Sealed va
Oil Heater
Inrush va
Sealed va
‘Values shown are for electronic control circuit Values for pneu
matic control circuit are Inrush va, 350, Sealed va, 250
NOTE Oil heater must be on separate circuit providing continuous
service
19DH
550550
3014
528
10001500
—
19EB J 19FA
^ANsTc89 1/NEMA Slf
1800390*
——
——
270*
1000
—
1000
19CB
511
133
44
27
750
Compressor motor controllers
Compressor motors as well as controls and accessories
require the use of starting equipment systems specifically
designed for 19 Series chillers. Refer to Application Data,
Starting Equipment publications or consult Carrier regard
ing design information for selection of controllers.
Capacitors
Power factor considerations may indicate use of capaci
tors Properly sized capacitors improve power factors as
illustrated in the Typical Power Factors curve
However, the P.F. of Carrier are so high that correc
Listed motor voltages are design voltages Motors are suitable
for use with supply voltages as noted, and will operate satis
factorily at 10% below the minimum and at 10% above the
maximum supply voltage
200 v — for use on 200- to 208-v systems
230 V — for use on 220- to 240-v systems
380 V — for use on 360- to 400-v systems
460 V — for use on 440- to 480-v systems
575 V — for use on 550- to 600-v systems
2400 V — for use on 2300- to 2500-v systems
41 60 V — for use on 4000- to 4300-v systems
6900 V — for use on 6600- to 7200-v systems
To establish electrical data for your selected voltage, if other
than listed voltage, use the following formulas
FLA
OLTA = listed OLTA x
LRA
EXAMPLE Find the full load amperage for a motor listed at
1 12 amps per kw input and 550 volts
Refrigerant High Pressure (Condenser)
Refrigerant Low Pressure (Cooler)
Refrigerant Low Temperature (Cooler)
Oil Pump Motor Overload
Lube Oil Low Pressure
Impeller Displacement Limit
Cooler and Condenser Water Flow Switches
INTERLOCKS:
Unloaded (Vanes Closed) Start
Pre-Lube and Post-Lube (via Program Timer)
Starting Sequence (via Program Timer)
Low Chilled Water Temp/Recycle Sequence (via Program Timer)
Oil Cooler Water Flow (Solenoid)
Machine Manual Reset after Safety Cutout
CAPACITY CONTROL:
Guide Vane Actuator
Solid State Leaving Chilled Water Control
Motor Current (demand) Limit — Adjustable 40-100%
Manual Leaving Chilled Water Reset
OTHERS:
Elapsed Time Indicator
Start Counter
Manual (Local) Start
Auto. (Remote) Start
Pneumatic Leaving Chilled Water Control
Pneumatic LCW Control Transducer
Safety Indicator panel
The safety controls of each Carrier centrifugal chiller are
factory wired and mounted to ensure machine protection
against condenser high pressure, cooler low temperature,
bearing or motor overtemperature, motor overload and oil
low pressure. Other safety controls ensure no-load starting
of compressor and prevent compressor restart until a safe,
preset interval has elapsed.
The capacity control system is a fully automatic, modular,
solid state system for precise control of machine capacity
at all loads. When it is desirable to use pneumatic controls
to interface with a complete pneumatic system, control
interface devices or complete pneumatic control systems
are available.
The operating capacity of each chiller is matched directly
with the need for cooling. As cooling needs change, guide
vanes in the refrigerant vapor stream entering the com
pressor change position to maintain the selected chilled
water (brine) temperature.
The changes in vane position are initiated by a solid state
thermistor in the chilled water line. This probe constantly
relays any variations in water temperature to a solid state
capacity control module in the chiller control center. The
control module, in turn, amplifies and modulates the probe
signals. The amplified signals cause a guide vane actuator
motor to adjust the guide vane position as required.
If chilled water temperature drops below the selected
design temperature, the actuator moves the guide vanes
towards a closed position; the rate of refrigerant evap
oration slows and chiller capacity decreases. A rise in
chilled water temperature above the set point causes the
actuator to move the vanes towards a more open position.
Refrigerant begins to evaporate at a more rapid rate and
chiller capacity increases.
Built-in safeguards in the capacity control system
prevent motor overload. When motor full load current is
reached, the guide vanes stop opening immediately If
motor current continues to increase, the guide vanes begin
to close until motor current is reduced. To minimize start
up current demand, capacity control interlocks keep the
guide vanes in a closed (minimum capacity) position until
the compressor motor reaches run condition.
44
Control sequence
Before the chiller can start, the condenser and chilled water
pumps must be operating. Field-supplied pilot relays for
pumps and fan are normally applied as shown in the Typical
Control Wiring Schematic.
Closing the chiller ON-STOP switch energizes the tem
perature control circuits in the compressor safety system.
Once these temperature sensing circuits have been ener
gized, the circuits containing pressure sensing devices can
be energized. If condenser pressure and cooler refrigerant
pressure/temperature are satisfactory, the machine control
circuit can then be energized by pressing chiller START
button. A program timer now begins a series of 4 timed
steps (PT-1 thru -4) to ensure the proper sequencing of the
oil pump and compressor start.
When the compressor motor reaches RUN condition, a
normally open contact closes to energize holding relay K3.
This locks in control circuit power to oil pump and water
pump motors whenever the chiller compressor is operating.
Energizing the K2 and K3 relays also permits the capacity
control circuit to position the compressor guide vanes as
required to maintain the selected chilled water temperature.
To guard against stress or damage to the compressor
motor, the program timer keeps the chiller control circuit
de-energized for approximately 15 minutes after a com
pressor stop.
The chiller is stopped by pressing the ON-STOP switch.
The auxiliary water pumps and fan motor are stopped by
pressing the field-supplied STOP button.
Typical control components
Condenser high-pressure cutout (manual reset) —
Shuts down compressor if condenser pressure rises above
cutout set point.
Bearing high-temperature cutout — Prevents damage
to motor and compressor bearings from excessive tem
perature. Keeps compressor from starting or shuts com
pressor off if bearing temperature reaches set point. Chiller
ON-STOP button must be opened and reclosed to reset this
safety circuit.
Motor winding high-temperature cutout — Prevents
compressor start or shuts compressor off if motor
winding temperature reaches set point. Requires opening
and reclosing chiller ON-STOP button to reset.
Cooler low-refrigerant cutout — Switch trips when
refrigerant charge is low, shutting off compressor. Switch
protects the cooler tubes from freeze-up if water flow drops
off or chilled water thermostat is set too low. Switch re
quires manual reset.
until oil pressure is adequate for good bearing lubrication.
Automatically stops compressor if oil pressure falls to
set point. Coastdown lubrication is provided in the
compressor.
Chilled water low-temperature recycle switch — Stops
compressor when chilled water temperature drops to a
point indicating minimum refrigeration load. Allows
chiller to recycle automatically when water temperature
rises to a point that indicates need for further cooling. Also
provides protection against tube freeze-up.
compressor inlet guide vanes are in closed position. Ensures
no-load starting.
Capacity control module (solid state) — Transmits
signals from temperature sensing element in the chilled
water line to compressor guide vane actuator. Provides
precise control of vane position, and hence, machine
capacity at all loads. Module contains a motor load control
that overrides the chilled water temperature control and
closes the guide vanes to prevent motor overload.
Guide vane actuator — Motor opens and closes com
pressor guide vanes in response to signals from capacity
control module.
Program timer — Sequences the start of oil pump and
compressor motor to ensure adequate lubrication before
compressor starts during operation and as the compressor
coasts down at shutdown. The program timer also provides
a 15-minute delay between any compressor stop and
subsequent start-up.
45
Typical control schematic
LEGEND
C — Common
CMS — Compressor Motor Starter
CT — Current Transformer
HPS — High-Pressure Cutout Switch
HTS — High-Temperature Cutout Switch
K — Relay
LTS — Low-Temperature Cutout Switch
NC — Normally Closed
NO — Normally Open
OL — Overload
RD — Signal Resistor
o Component Terminal
______
Factory Wiring
—
------
Field Wiring
A Junction
46
Guide specifications
Furnish and install — Hermetic centrifugal liquid chilling
package(s) suitable for chilling water as shown when sup
plied with condenser water and electric power as shown on
the plans.
Selection — Each unit shall allow for water side fouling
factor of .0005 in the cooler tubes and .0005 in the con
denser tubes. Cooler and condenser water pressure drops
shall not exceed those shown on plans. The kw power
draw shall not exceed that shown on plans. Machine shall
be rated in conformance with the most recent ARI Standard
550. Each unit shall conform to ANSI/ASHRAE 15-1978
Safety Codes.
Water chiller shall be complete with compressor and
motor, evaporator, condenser, lubrication system, capacity
control and controller, motor starter, instrument and
control panel mounted and factory wired on the machine,
purge system and other items as herein specified.
For capacities thru 1500 tons, the machine shall be
shipped completely factory assembled with all refrigerant
piping and control wiring factory installed. Models utilizing
R-12 and R-500 shall be shipped pre-charged. Machines
operating on R-11 and R-114 shall be charged at thejob site.
Compressor shall be of high performance single- or multi
stage hermetic design. Multi-stage designs shall include
interstage flash economizer for maximum cycle efficiency
and lowest operating cost. A thrust bearing of the Kingsbury
type with forced-feed lubrication shall axially position the
shaft under unidirectional thrust loading. To prevent
potential machine hazards, the impeller shall be designed so
that the thrust loading is positive and unidirectional under
all operating conditions.
Friction losses shall be maintained at a minimum by an
impeller design utilizing precision shaft placement. Impeller
shall be of an in-line design for even unloading and ease of
maintenance. Multi-stage compressors shall have dia
phragms between stages. Impellers shall be overspeed
tested a minimum of 20% above operating conditions.
Babbitt-lined journal bearings to be self-aligning type,
pressure lubricated. Compressor transmission gears must
be arranged for visual inspection without disassembly or
removal of compressor casing or impeller. The gears are to
be of the double-helical design, symmetrical and center
supported by a spherically seated, self-aligning bearing.
Compressor shall be capable of operation without surge,
cavitation or undue vibration from full load to 10% load
without hot gas bypass when supplied with design entering
water quantity.
Force-feed lubrication system with a hermetic motor
driven oil pump shall be furnished as part of the water
chiller. System shall be complete with oil pump, oil cooler,
pressure regulator, oil filters, thermostatically controlled
oil heater and necessary motor controls. Oil pumps shall
be energized prior to chiller motor energization. Oil pump
starter shall be factory supplied and mounted on the chiller
and factory wired with only field power leads required. (On
19DH and 19EB units only.) Should a substitute oil pump
[starter be offered that is not factory mounted, all required
extra field mounting and wiring is to be done at no cost to
the owner.
Oil pump controls are to have delayed action so that oil
pressure is provided during machine coastdown. Oil pump
is to be provided with a separate 460-volt, 3-phase, 60-Hertz
power source. Oil pump shall have momentary switches to
permit only manual operation of pump when compressor is
not operating. When compressor is not operating, auto
matic operation modes are unacceptable since they are con
ducive to refrigerant absorption.
Motors shall be of the single-speed, non-reversing squirrel-
cage induction type, and shall be suitable for voltage as
shown on plans. The design speed shall be 3550 rpm. The
motor shall be suitable for operation in a refrigerant
atmosphere. Compressor motor to be cooled by atomized
subcooled refrigerant in contact with the motor windings.
Water jacket designs are not acceptable, as they produce
substantial temperature gradients throughout the motor
windings. Motor stator shall be arranged for service or
removal without complete compressor disassembly or
breaking of main refrigerant piping connections. Full-load
operation of the motor shall not exceed nameplate rating.
Motor shall be built for connection to Star Delta type
reduced voltage starter.
Evaporator and condenser shall be fabricated with
integrally-finned copper tubing rolled into the tube sheets
in both the evaporator and condenser as well as expanded
into the tube support sheets in the evaporator. Tubing shall
be finned except in the area adjacent to and in contact with
the tube and tube support sheets. Tube support sheets shall
be spaced at approximately 2-1/2 ft. intervals to maintain
proper tube spacing and to minimize tube vibration
and wear.
Tubes shall be removable from either end of the heat
exchanger without affecting strength and durability of
the tube sheet and without causing leakage at adjacent
tubes.
Water boxes are to be machine welded to the heat
exchanger tube sheet and to be equipped with tapped drain
and vent connections.
Machines using R-12 and R-500 shall be equipped with a
thermal economizer built into the condenser for increased
cycle efficiency.
Construction and materials for the heat exchangers shall
conform to ANSI B9.1 Safety Code for mechanical refrig
eration (which in turn requires conformance to the ASME
Code for Unfired Pressure Vessels where applicable).
Cooling tower bypass valve and associated piping are not
required for proper operation of the specified chiller at
design load. If a substitute chiller is supplied, it must be
capable of operating with condenser water temperatures
as low as 55 F without the need of cooling tower bypass.
Otherwise, a cooling tower bypass valve, bypass piping
and all associated controls must be supplied and installed
by the contractor at no cost to the owner. Working draw
ings pertaining to cooling tower bypass shall be prepared
by the contractor and submitted for approval.
Structural steel shipping skids shall be furnished with
each machine to facilitate transfer of machine from trans
porting conveyance to job site and to provide most effective
lifetime support for the machine. Substitute machines with
out these supports shall be properly supported by the
contractor at no cost to the owner. Vibration isolation
shall be provided in accordance with specifier’s
recommendations.
47
Guide specifications (cont)
Controls shall be solid state, fully automatic and “fail-safe.”
Safety shutdown shall be provided for low refrigerant
temperature or pressure, bearing high temperature, high
refrigerant pressure, motor temperature and motor over
load. Each of the above controls shall have manual reset
flags. Recycle shutdown shall be provided for low oil
pressure and low chilled water temperature. These con
trols shall be automatic reset. Motor shall be protected
against drawing more than rated full load amperes. Motordriven elapsed running time meter shall be factory in
stalled on each machine. Solid state chilled water controller
shall be located within control panel and capable of
throttling range setting of 1.5 F. Pneumatic control with
automatic reset, which meets the 1.5 F throttling range
requirements, will be acceptable. If such pneumatic con
trol is used, the refrigeration machine manufacturer shall
furnish the chilled water controller and shall be responsible
for all required pneumatic work and any additional elec
trical work not shown on plans.
Each safety switch shall be wired across its own set of
terminals for easy isolation.
Demand limiter — Demand Limiter Device shall be pro
vided within the standard control panel so that maximum
current may be manually set to any fraction between 40%
and 100% of full load amperes. Limiters with 4-point settings
in the control panel are not acceptable.
Chiller shall be equipped with instrument gage and
control panel indicating condenser pressure, evaporator
pressure and oil pressure. Panel shall contain switches per
mitting manual or automatic operation of oil pump and
purge pump. In addition to gages, pilot lights and switches,
the panel shall contain evaporator low temperature or pres
sure cutout, condenser high pressure cutout, and differ
ential oil pressure controller interlocked so that compressor
will only operate if adequate oil pressure is maintained to
bearings. High pressure cutout and evaporator low tem
perature cutout shall be arranged in a lockout circuit
provided with reset buttons. Panel shall also operate the
capacity control mechanism to limit the load on compressor
motor to a safe maximum.
Purge system supplementing the instrument and control
panel shall be a self-contained purge system provided with
any necessary devices for evacuating air and water vapor
from the system and for condensing, separating and
returning refrigerant to the system. Compression type
purges are not acceptable as they are susceptible to leaks.
If city or other water piping is required for purge operation,
chiller manufacturer shall include same in his bid.
Refrigerant — If low-pressure (R-11) refrigerant is used,
machine shall be furnished with a factory-installed, wired
and piped purge unit suitable for removing noncondensible
gases and water which may enter the machine and for
reclaiming refrigerant. If high-pressure (R-12 or R-500)
refrigerant is used, machine shall come factory equipped
with a refrigerant storage vessel and pumpout compressor
(for multiple
external to the cooler and condenser and of sufficient
capacity that the entire charge may be transferred to the
_____
may be used). Storage vessel shall be
vessel with 20% excess volume remaining in the vessel and
a pumpout compressor factory installed (for multiple
machine installations one pumpout may be used).
Refrigerant flow control shall be by means of a positive
metering device either float or pressure operated. The
chiller shall be capable of operating with entering con
densing water temperatures of 55 F. If a tower water
bypass valve is required to maintain a condensing pressure
head with 55 F entering water, the chiller manufacturer
shall include same in his bid.
Chiller manufacturer shall furnish magnetic motor
starters, Star-Delta closed transition type, with suitable
3-leg overloads. Starters shall be furnished with NEMA 1
enclosures for installation by the electrical contractor.
The disconnect, protection devices and control voltage
shall be provided by others.
Electrical — Electrical contractor shall furnish and install
all electrical lines, disconnect switches, circuit breakers,
auxiliary starters, and shall install the main starter and the
control wiring according to the diagram furnished by the
centrifugal refrigerating machine manufacturer.
Piping — Piping contractor shall make water connections
to the oil cooler, and such other water supply, drain and
vent connections as are required by the drawings and local
codes.
Initial refrigerant and oil charge shall be provided.
Water chiller unit performance data shall be submitted
for approval.
Nameplates — Chiller shall bear firmly attached metal
plates which state name of manufacturer, chiller unit
model number, compressor type and refrigerant used.
Operating and maintenance instructions prepared by
chiller manufacturer shall be included in Operating and
Maintenance Instructions herein before specified.
Start-up — Chillers shall be leak tested, refrigerant
pressure tested, evacuated, dehydrated, charged, started,
controls calibrated, and operating instructions given to
owner’s personnel by a factory trained service mechanic
employed by the chiller manufacturer. Start-up super
vision will not be acceptable.
The drawings are based on a Carrier machine. If another
manufacturer is substituted, that manufacturer shall be
responsible for all electrical, mechanical, structural or
architectural changes.
Equivalent material which qualifies to meet the above
specification will be acceptable. Manufacturers other than
Carrier, shall submit a 1/2-in. scale plan and section drawing
showing proper fit and clearance for tube pull, motor or
compressor removal, other maintenance clearances re
quired and rigging clearance needed within the mechanical
room.
Guarantee — All equipment furnished under this section
of the specifications shall be guaranteed against defective
workmanship and material for a period of one (1) year from
date of beneficial use to the owner or 18 months from time
of delivery whichever occurs first.
48
Build your system around
matched Carrier components
ABSORPTION
REClPROCATiNG
HERMET5C CENTRiFUGAL
OPEN-DRIVE
CENTRiFUGAL
COILS
CENTRAL
STATION
FANS
VARIABLE
VOLUME
PLUS — many other speciedized product
lines. . .both packaged units and system
PACKAGED FAN COILS
SMALL FAN COILS
components. CaU your Carrier representative
for information.
For systems that involve centrifugal and absorption machinery,
process cooling, and related air system equipment, contact your
Carrier Machinery & Systems Division offices listed below:
Albany, New York
Albuquerque, New Mexico
Atlanta, Georgia
Baltimore, Maryland
Birmingham, Alabama
Boston, Massachusetts
Buffalo, New York
Charlotte, North Carolina
Chicago, Illinois
Cincinnati, Ohio
Cleveland, Ohio
Clifton, New Jersey
Columbia, South Carolina
Columbus, Ohio
Dallas, Texas
Denver, Colorado
Detroit, Michigan
Ft, Worth, Texas
Grand Rapids, Michigan
Greensboro, North Carolina
Greenville, South Carolina
Raleigh, North Carolina
Richmond, Virginia
Roanoke, Virginia
Rochester, New York
St Louis, Missouri
Salt Lake City, Utah
San Antonio, Texas
San Diego, California
San Francisco, California
San Jose, California
Seattle, Washington
Syracuse, New York