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Evergreen
™
C H I L L E R S
High-Efficiency Hermetic Centrifugal Liquid Chillers
19XR
Nominal cooling capacity 1000-5300 kW
Carrier’s Evergreen centrifugal chillers provide exceptional value by achieving energy efficiency levels as high as 6.8
(COP) utilizing proven technology designed specifically for chlorine-free refrigerant:
■
■
■
■ Unique concept of the hermetic compressor:
- Single-stage aerodynamic impeller
- Tunnel diffusers, based on aircraft engine technology
- Motor cooled by refrigerant gas injection
Use of high-efficiency evaporator and condenser tubes
Expansion sub-cooler integrated into the condenser
Patented float valve technology for optimised sub-cooling and refrigerant level in the evaporator
These advantages, together with the modularity of the units and their efficiency, economical operation and dimensional constraints allow the use of the Carrier Evergreen centrifugal chillers in any high-capacity water cooling applications.
Features
■ Environmentally-preferred HFC-134a refrigerant
The Evergreen chillers use chlorine-free HFC-134a refrigerant with zero ozone-depletion potential, the refrigerant of choice for automotive and appliance manufacturers.
■ Mix-match capabilities
The chillers provide a complete line of compressors and heat exchangers, ensuring the optimal combination of machine components regardless of capacity, lift, and efficiency specifications.
■ Heat exchangers feature:
European pressure vessel code certified construction, ensuring maximum heat exchanger safety, reliability and long life.
■ Single-stage hermetic compressor
This design:
- increases product reliability by eliminating the additional moving parts associated with multiple stage machines, such as additional guide vanes and complex economizers.
- eliminates refrigerant leaks from the compressor/motor transmission joints in open-drive compressors
■ Aerodynamically-contoured impellers
Impellers that utilize high back sweep main blades with lowprofile intermediate splitter blades are aerodynamically contoured to improve compressor full-load and part-load operating efficiency.
Table of contents
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Easy installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Power supply and controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Variable inlet guide vanes (capacity control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Simple to service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Options and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Starter features and options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Physical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Maximum outside temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unit operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristics of the motors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Refrigeration cycle (centrifugal chiller) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Compressor components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Machine components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Machine dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Application data, mounting arrangement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Unit levelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Soleplate accessory detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Waterboxes - nozzle arrangements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
A - Nozzle-in-head arrangement codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Sizes 4, 5 and 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Sizes 7 and 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
B – Marine nozzle arrangement codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Size 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Sizes 4, 5 and 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Sizes 7 and 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Technical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Typical piping and wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
19XR chiller with optional unit-mounted starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
19XR chiller with free-standing starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Easy installation
■ Modular construction
The cooler, condenser, and compressor assemblies are completely bolted together, making the Evergreen chillers ideally suited for replacement projects where ease of disassembly and reassembly at the jobsite are essential.
■ Water piping
The unit has quick and easy piping: the standard unit includes nozzle-in head water boxes with Victaulic grooves to allow for use of Victaulic couplings. Flanges are available as an option.
■ Optional unit-mounted starter
Carrier’s unit-mounted starter is available as a low-voltage version and provides a single point power connection, reducing machine installation time and expense.
■ Quick start-up
Quick start-up is assured once installation is complete, as each 19XR unit is manufactured at an ISO 9001 listed manufacturing facility to guarantee quality. All units are factory-tested to allow easy and reliable start-up at job site.
Compressors are run-tested to ensure proper operation of all compressor systems, including oil management, vibration, electrical, power transmission, and compression.
Power supply and controls
1-Electrical cabinets:
■ Serviceability and convenience have been “designed-in”, for example:
- Control transformer is fitted as standard
- Single-point mains power connection if unit-mounted starter is supplied
- All components are mounted using connectors to facilitate fast servicing and replacement
- Components are labelled and numbered according to wiring diagrams
- IP 23C protection on the whole unit
2 - Microprocessor controls features:
■ Numerical product-integrated control (PIC II)
The Carrier numerical control integrated into the secondgeneration products (PIC II Product Integrated Controls) provides unmatched flexibility and functionality. Each unit integrates directly with the Carrier Comfort Network (CCN), providing a system solution to controls applications.
■ Human Interface (CVC)
The CVC (Cooler Visual Control) interface, which can be configured to display units in Imperial or metric, provides unparalleled ease of operation. A 16-line by 40-character
LCD (Liquid Crystal Display) features 4 menu-specific soft keys. Default display offers easy, quick review of key chiller operation data, simplifying the interaction between machine and user.
Local languages are available upon request.
■ Chilled water reset
Reset can be accomplished manually or automatically from the building management system. Reset saves energy when warmer chilled water can be utilized.
2
■ Demand limiting
This feature limits the power draw of the chiller during peak loading conditions. When incorporated into the Carrier
Comfort Network building automation system, a red line command will hold chillers at their present capacity and prevent any other chillers from starting. If a load shed signal is received, the compressors are unloaded to avoid high demand charges whenever possible.
■ Ramp loading
Ramp loading ensures a smooth pulldown of water loop temperature and prevents a rapid increase in compressor power consumption during the pulldown period.
■ Automated controls test
The test can be easily executed prior to start-up to verify that the entire control system is functioning properly.
■ 365-day real time clock
This feature allows for the operator to programme a yearly schedule for each week, weekends, and holidays.
■ Occupancy schedules
Schedules can be programmed into the controller to ensure that the chiller only operates when cooling is required.
■ Extensive service menu
Unauthorized access to the service menu can be passwordprotected. Built-in diagnostic capabilities assist in troubleshooting and recommend proper corrective action for preset alarms, resulting in less down time.
■ Battery backup
Battery backup provides protection during power failures and eliminates time consuming control reconfiguration.
Encapsulated circuit boards are designed, built and tested inhouse. Each board meets Carrier’s stringent quality standards for superior reliability compared to open board designs.
■ Other control features include:
Display of over 125 operating, status, and diagnostic messages for improved user interface
- Monitoring of over 100 functions and conditions to protect the chiller from abnormal conditions
- Modular pull-out/plug-in design, reducing wiring requirements and providing easy installation
- Low-voltage (24 V ac) design, providing the ultimate assurance of personal safety and control integrity.
■ Microprocessor-controlled oil heater
The heater prevents excessive absorption of refrigerant into the oil during compressor shutdown, ensuring a plentiful supply of undiluted lubrication oil in the oil sump.
■ Safeties
Unit is automatically shut down when any of the following conditions occur: (each of these protective limits shall require manual reset and cause an alarm message display on the
LCD screen, informing the operator of the shutdown cause.)
- Motor overcurrent
- Over voltage*
- Under voltage*
- Single cycle dropout*
- Bearing oil high temperature
- Low evaporator refrigerant temperature
- High condenser pressure
- High motor temperature
- High compressor discharge temperature
- Low oil pressure
- Prolonged surge
- Loss of cooler water flow
- Loss of condenser water flow
- Starter fault
* Do not require manual reset or cause an alarm if auto-restart after power failure is enabled.
■ Alarm file
This file maintains the last 25 time- and date-stamped alarm and alter messages in memory; this function reduces troubleshooting time and cost.
■ Overrides
The control system detects conditions which approach protective limits and takes self-corrective action prior to an alarm occurring.
The system automatically reduces chiller capacity when any of the following parameters are outside their normal operating range:
- High condenser pressure
- High motor temperature
- Low evaporator refrigerant temperature
- High motor current
During the capacity override period, a pre-alarm (alert) message is displayed, informing the operator which condition is causing the capacity override. Once the condition is again within acceptable limits, the override condition is terminated and the chiller reverts to normal chiller water control. During either condition, if the protective limit is reached, the chiller shuts down and a message is displayed informing the operator which condition has caused the shut down and alarm. This function increases unit life.
■
Variable inlet guide vanes
Capacity control is by means of variable inlet guide vanes located at the impeller inlet. Load modulation is from 100% to 15% of compressor full load under nominal ARI conditions without the use of hot gas bypass. The guide vanes are precisely positioned by a PID (proportionalintegral-derivative) control algorithm to ensure precise control of desired chilled water temperature without hunting or overshooting the set point.
■
■
■
Simple to service
Mechanically cleanable cooler and condenser.
The machine concept allows the refrigerant to be stored inside the chiller during servicing, reducing refrigerant loss and eliminating time-consuming transfer procedures. As a self-contained unit, the Evergreen chillers can be applied to applications that incorporate more than one type of refrigerant without the costly penalty of requiring additional remote storage systems.
Easy-access suction and discharge pressure and temperature information using enhanced display module.
3
Model number nomenclature
19XR 52 51 CQ 475 1 S P EE
Description
19XR - High-Efficiency Hermetic
Centrifugal Liquid Chiller
Cooler size
- 6 sizes
- 3 lengths
Condenser size
- 6 sizes
- 3 lengths
Motor code
- 4 sizes
- 27 models
Internal codes
European pressure vessel code:
P: PED
Motor efficiency code
H — High efficiency
S — Standard efficiency
Chronology
Compressor code
4
Options and accessories
ITEM
Marine codes (L.R.-B.V.-A.B.S.-G.L.-D.N.V.-R.I.N.A. – see legend)
Shipped factory charged with refrigerant
One, two or three-pass cooler or condenser water-side construction
Hot gas bypass
Protective aluminium insulation on the evaporator and compressor motor insulation
Nozzle-in-head waterbox (2068 kPa)
Marine waterboxes (1034 kPa or 2068 kPa)***
CCN/JBus Interface (BMS application)
Cupronickel pipes for condenser (1034 kPa) with cupronickel tube sheets, division plate, nozzles and couplings***
Flanged cooler and condenser waterbox nozzles****
IP 44C (unit)
Unit-mounted low-voltage electronic starters
Export crating
Customer factory performance testing (depending on unit size)
Mounted pumpout unit
Delivery in four sections
Stand-alone pumpout unit
Separate storage tank and pumpout unit
Soleplate package
Spring isolator kit
* Factory installed.
** Field Installed.
*** Optional marine waterboxes. Standard waterboxes are nozzle-in-head type (1034 kPa).
**** Standard waterbox nozzles are victaulic type. Flanged nozzles are available as an option with either nozzle-in-head type waterboxes or marine waterboxes.
X
X
X
X
X
Option *
Special
X
X
X
X
X
X
X
X
Special
X
L.R.
B.V.
A.B.S.
G.L.
Lloyd’s Register
Bureau Veritas
American Bureau of Shipping
Germanischer Llloyd
D.N.V.
Det Norsk Veritas
R.I.N.A.
Registro Italiano Navale
Accessory **
X
X
X
X
Starter features and options
ITEM
IP 44D
Carrier starter management module (I.S.M.)
Branch oil pump circuit breaker
Controls/oil heater transformer with branch circuit breaker
Microprocessor based overload trip protection
High interrupt oil pump/heater circuit breaker
High interrupt capacity main circuit breaker (40 kA)
Phase loss/reversal imbalance protection*
Ground fault protection
Three phase digital ammeter*
Three phase voltmeter*
Three phase over/under voltage protection*
Digital watt meter*
Digital power factor meter*
LEGEND
S - Standard
O - Optional
* Values shown on the display (CVC) and measured with unit current transformers and power supply.
S
S
S
S
S
S
O
S
S
S
S
S
S
Electronic starter
S
Physical data
Nominal capacity kW Heat exchanger size
19XR
1000-5300
5
6
3
4
7
8
* Two-pass heat exchangers with nozzles on the same end
Dimensions, mm
Length *
Standard
Length *
Extended
4172
4242
4370
4261
4978
5118
4693
4763
4769
4782
5588
5607
Width
1670
1880
1994
2096
2426
2711
Maximum outside temperatures
■ For transport and storage of the 19XR units the minimum and maximum allowable temperatures are –20°C and +48°C.
Unit operating range
Evaporator
Evaporator entering water temperature* °C
Evaporator leaving water temperature* °C
Condenser (water-cooled)
Minimum
7
3.3
Minimum
Maximum
29
12
Maximum
Condenser entering water temperature* °C
Condenser leaving water temperature* °C
10
29
35
46
* The operating range of the selected unit must always be verified at full load and part load by the selection programme for the chosen configuration. The values from the selection programme apply. Applications at temperatures below zero at the evaporator are possible, depending on the temperatures at the condenser.
Unit selections are obtained from the Carrier sales force.
Height
2073
2153
2207
2257
2985
3029
Average operating weight, kg
8000
10204
12698
15420
17765
25712
5
6
General electrical data
Standard voltages:
50 Hz
Volt
230
346
400
3000
3300
6300
For use on supply voltages
220 to 240 V systems
320 to 360 V systems
380 to 415 V systems
2900 to 3100 V systems
3200 to 3400 V systems
6000 to 6600 V systems
Notes:
Motor nameplates can be stamped for any voltage within the listed supply/ voltage range. Chillers shall not be selected at voltages above or below the listed supply voltage range.
Auxiliary ratings (3 Phase, 50 Hz)
Item Average kW
Design Min./max.
centre motor kVA voltage
V-Ph-Hz voltage
V
Oil pump 1.50
1.50
230-3-50
393-3-50
220/240
346/440
IkW = Compressor motor power input (kW)
RLA = (rated load amperes) = Sealed kVA x 1000/ 33 x volts
LRA = (locked rotor amperes) = Inrush kVA x 1000/ 33 x volts
11.15
8.30
kVA
1.93
1.76
Auxiliary ratings (115/230 V, 1 phase, 50 Hz)
Item Voltage Sealed kVA Average W
Controls
Oil sump heater
24 V a.c.
115/1/50
0.16
—
160
1800
Notes:
1. Oil sump heater only operates when the compressor is off.
2. Power to oil heater/controls must be on circuits that can provide continuous service when the compressor is disconnected.
Notes:
• 19XR units have a single power connection point.
• The control box includes the following standard features:
- Starter and compressor motor protection devices, or
- protection and control elements only
• Field connections:
All connections to the system and the electrical installations must be in full accordance with all applicable codes.
• The Carrier 19XR units are designed and built to ensure conformance with local codes.
The recommendations of European standard EN 60204-1 (corresponds to IEC 60201-
1) (machine safety - electrical machine components - part 1: general regulations) are specifically taken into account, when designing the electrical equipment.
Notes:
• Generally the recommendations of IEC 60364 are accepted as compliance with the requirements of the installation directives. Conformance with EN 60204-1 is the best means of ensuring compliance with the Machines Directive and § 1.5.1.
• Annex B of EN 60204-1 describes the electrical characteristics used for the operation of the machines.
1. The operating environment for the 19XR units is specified below:
Environment* - Environment as classified in IEC 60364 § 3:
- ambient temperature range: +5°C to +40°C, class AA4*
- humidity range (non-condensing)*:
50% relative humidity at 40°C
90% relative humidity at 20°C
- altitude: ) 2000 m
- indoor installation
- presence of water: class AD2* (possibility of water droplets)
- presence of hard solids, class AE2* (no significant dust present)
- presence of corrosive and polluting substances, class AF1 (negligible)
- vibration and shock, class AG2, AH2
Competence of personnel, class BA4* (trained personnel - IEC 60364)
2. Power supply frequency variation: ± 2 Hz.
3. The neutral (N) conductor must not be connected directly to the unit (if necessary use a transformer).
4. Overcurrent protection of the power supply conductors is not provided with the unit.
5. The factory-installed disconnect switch(es)/circuit breaker(s) is (are) disconnect devices of a type suitable for power interruption in accordance with EN 60947-3 (corresponds to
IEC 60947-3).
6. The units are designed for connection to TN networks (IEC 60364). For IT networks the earth connection must not be at the network earth. Provide a local earth, consult competent local organisations to complete the electrical installation.
Note:
If particular aspects of an actual installation do not conform to the conditions described above, or if there are other conditions which should be considered, always contact your local Carrier representative.
* The protection level required to conform to this class is IP21B (according to reference document IEC 60529). All 19XR units are protected to IP23C and fulfil this protection condition.
Electrical characteristics of the motors
50 Hz - Standard efficiency motors
Size B
Low voltage
Motor size
BDS
BES
BFS
BGS
BHS
Motor electrical data
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
Max.
IkW
100
135
170
204
247
Low voltage
230 V 346 V
2.85
546
1763
2.80
655
2114
2.78
801
2585
2.79
1033
3333
2.72
1192
4133
1.87
339
1093
1.86
438
1414
1.85
534
1723
1.84
615
1983
1.81
784
2729
400 V
1.62
300
966
1.61
372
1200
1.60
475
1533
1.59
532
1715
1.56
627
2191
50 Hz - Standard efficiency motors
Size D
Low, medium and high voltage
Motor Motor size electrical data
DBS
Low voltage
Max.
Medium voltage
Max.
High voltage
Max.
lkW 230 V 346 V 400 V lkW 3000 V 3300 V lkW 6300 V
DCS
DDS
DES
DFS
DGS
DHS
DJS
RLA per IkW 340
LRA Star
LRA Delta
RLA per IkW 366
LRA Star
LRA Delta
RLA per IkW 394
LRA Star
LRA Delta
RLA per IkW 416
LRA Star
LRA Delta
RLA per IkW 449
LRA Star
LRA Delta
RLA per IkW 485
LRA Star
LRA Delta
RLA per IkW 528
LRA Star
LRA Delta
RLA per IkW 597
LRA Star
LRA Delta
2.70
1.79
1.55
339 0.218
0.197
1679 1160 963
5468 3776 3142
-
332
-
301
2.70
1.79
1.55
370 0.216
0.197
1681 1163 965
5483 3794 3147
-
373
-
344
2.70
1.79
1.55
395 0.217
0.197
1821 1184 1025
5926 3865 2248
-
439
-
378
2.68
1.78
1.54
419 0.217
0.197
2185 1418 1260 -
7083 4609 4096 439 378
2.68
1.78
1.54
453 0.216
0.196
2189 1421 1262 -
7110 4626 4108 419 427
-
-
-
2.68
1.78
1.54
499 0.215
0.196
2644 1581 1402 -
8593 5150 4563 480 422
2.74
1.78
1.54
525 0.213
0.192
2397 1837 1561 -
7490 5972 5075 513 563
1.78
1.54
565 0.214
0.193
1727 1437 -
5640 4692 513 565
-
-
-
-
-
-
391
415
447
492
527
563
0.103
-
312
0.103
-
309
0.103
-
313
-
-
-
-
-
-
0.103
-
252
0.103
-
256
0.103
-
256
50 Hz - Standard efficiency motors
Size C
Low and medium voltage
Motor size
Motor electrical data
Max.
lkW
Low voltage Medium voltage
230 V 346 V 400 V 3000 V 3300 V
CDS
CES
CLS
CMS
CNS
CPS
CQS
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
199
219
243
267
295
323
360
2.92
1.95
1432 959
4495 3008
2.86
1.86
1523 921
4784 2904
2.93
1.92
1727 1082
5404 3394
2.79
1.83
1542 833
4820 2603
2.79
1.83
1446 2670
4518 854
2.76
1.83
1534 1020
4795 3187
2.76
1.94
1542 1303
4820 4072
1.63
653
0.22
-
2055 194
1.62
653
0.22
-
2055 214
1.65
825
0.21
-
2591 241
1.60
730
0.22
-
2281 258
1.68
896
0.22
-
2800 291
1.62
952
0.21
-
2973 325
1.6
952
0.21
-
2973 346
0.2
-
236
0.2
-
254
0.19
-
285
0.2
-
292
0.19
-
343
0.20
-
194
0.2
-
212
To establish electrical data for your selected voltage, if other than listed voltage, use the following formula:
RLA = listed RLA x
Listed voltage
Selected voltage
OLTA = listed OLTA x
Listed voltage
Selected voltage
LRA = listed LRA x
Listed voltage
Selected voltage
EXAMPLE: Find the rated load amperage for a motor listed at 1.14 amps per kW input and 550 volts.
50 Hz - Standard efficiency motors
Size E
Low and medium voltage
Motor Motor size
Low voltage electrical Max.
data lkW 400 V
Medium voltage
Max.
lkW 3000 V
EHS
EJS
EKS
ELS
EMS
ENS
EPS
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
603
646
692
746
809
876
931
Legend
IkW - Compressor motor power input (kW)
LRA Star - Locked rotor amperes, star configuration
LRA Delta - Locked rotor amperes, delta configuration
OLTA - Overload current (= RLA x 1.08)
RLA - Rated load amperes
1.62
1.988
6.308
1.62
2.289
7.266
1.58
2.192
6.984
1.60
2.493
7.927
1.59
2.493
7.927
1.64
3.394
10.498
1.62
3.466
11.004
607
648
701
756
819
886
943
0.214
-
675
0.213
-
753
0.211
-
767
0.210
-
940
0.210
-
937
0.209
-
1058
0.210
-
1061
3300 V
0.194
-
578
0.192
-
631
0.192
-
749
0.191
-
838
0.191
-
841
0.190
-
963
0.191
-
965
RLA = 1.14 x
575
550
= 1.19
7
8
Electrical characteristics of the motors (cont.)
50 Hz - High-efficiency motors
Size B
Low voltage
Motor size
BDH
BEH
BFH
BGH
BHH
Motor Max.
electrical data lkW
99 RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
134
171
206
241
230 V
2.87
801
2585
2.87
1033
3333
2.72
1040
3598
2.75
1455
5023
2.73
1453
5047
346 V
1.91
534
1723
1.86
615
1983
1.83
791
2739
1.80
787
2742
1.79
786
2745
50 Hz - High-efficiency motors
Size C
Low and medium voltage
Motor size
Motor electrical data
Max.
lkW
Low voltage Medium voltage
230 V 346 V 400 V 3000 V 3300 V
CDH
CEH
CLH
CMH
CNH
CPH
CQH
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
196
214
239
263
292
320
358
2.86
1.90
1586 1061
5002 3345
2.77
1.88
1577 1142
5087 3685
2.76
1.83
1768 1165
5703 3758
2.92
1.93
1959 1253
6765 4343
2.87
1.90
1922 1233
6663 4278
2.83
1.91
1897 1385
6592 4801
2.88
1.89
2243 1384
7751 4812
1.70
1278
4417
1.67
1263
4370
1.65
1263
4389
1.64
902
2848
1.63
1013
3266
1.59
1032
3328
1.63
928
3227
0.22
-
393
0.22
-
395
0.22
-
460
0.22
-
331
0.22
-
333
0.22
-
236
0.22
-
288
0.20
-
364
0.20
-
369
0.20
-
389
0.20
-
287
0.20
-
291
0.20
-
229
0.20
-
242
To establish electrical data for your selected voltage, if other than listed voltage, use the following formula:
RLA = listed RLA x
Listed voltage
Selected voltage
OLTA = listed OLTA x
Listed voltage
Selected voltage
LRA = listed LRA x
Listed voltage
Selected voltage
EXAMPLE: Find the rated load amperage for a motor listed at 1.14 amps per kW input and 550 volts.
400 V
1.67
475
1533
1.61
532
1715
1.58
656
2282
1.58
821
2842
1.56
819
2846
50 Hz - High-efficiency motors
Size D
Low, medium and high voltage
Motor size
DBH
DCH
DDH
DEH
DFH
DGH
DHH
DJH
Motor electrical data
Low voltage
Max.
lkW
Medium voltage
Max.
High voltage
Max.
230 V 346 V 400 V lkW 3000 V 3300 V lkW 6300 V
333 RLA per IkW 337
LRA Star
LRA Delta
RLA per IkW 361
LRA Star
LRA Delta
RLA per IkW 390
LRA Star
LRA Delta
RLA per IkW 413
LRA Star
LRA Delta
RLA per IkW 438
LRA Star
LRA Delta
RLA per IkW 480
LRA Star
LRA Delta
RLA per IkW 513
LRA Star
LRA Delta
RLA per IkW 552
LRA Star
LRA Delta
-
-
-
-
-
-
2.68
1.78
1.54
1831 1228 1027
5966 4008 3350
2.69
1.78
1.54
2064 1297 1097
6707 4230 3574
2.68
1.78
1.54
2016 1401 1161
6567 4561 3790
2.68
1.78
1.55
2017 1399 1240
6564 4570 4038
-
-
-
2.69
1.78
1.54
2544 1648 1292
8288 5366 4217
1.78
1740
5673
1.54
1478
4817
1.78
1.54
1740 1478
5679 4823
1.78
1.54
1741 1480
5689 4837
365
391
414
442
488
516
550
0.218
0.197
-
440
-
395
0.216
0.197
-
468
-
423
0.217
0.197
-
506
-
450
0.216
0.197
-
546
-
523
0.215
0.195
-
580 510
0.215
0.197
-
624 615
0.213
0.193
-
894 832
0.21
-
851
0.194
-
928
-
-
-
-
391 0.103
-
278
414 0.104
-
304
446 0.103
-
302
489 0.102
-
321
523 0.103
-
367
556 0.103
-
403
50 Hz - High-efficiency motors
Size E
Low, medium and high voltage
Motor size
Motor electrical Max.
data
Low voltage lkW 400 V
Medium voltage
Max.
lkW 3000 V 3300 V
EHH
EJH
EKH
ELH
EMH
ENH
EPH
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
RLA per IkW
LRA Star
LRA Delta
602
645
689
744
808
875
930
1.60
2.075
6.600
1.58
2.192
6.984
1.57
2.347
7.505
1.57
2.347
7.505
1.58
2.738
8.720
1.61
3.541
11.257
1.60
3.499
11.124
604
646
692
750
811
879
937
Legend
IkW - Compressor motor power input (kW)
LRA Star - Locked rotor amperes, star configuration
LRA Delta - Locked rotor amperes, delta configuration
OLTA
RLA
- Overload current (= RLA x 1.08)
- Rated load amperes
0.210
-
1047
0.210
-
1154
0.210
-
1151
0.210
-
672
0.210
-
807
0.210
-
872
0.210
-
1055
0.191
-
901
0.191
-
1137
0.191
-
1130
0.193
-
697
0.190
-
707
0.192
-
827
0.191
-
901
High voltage
Max.
lkW 6300 V
608
651
696
754
817
883
941
0.100
-
465
0.100
-
586
0.100
-
586
0.100
-
338
0.100
-
397
0.100
-
426
0.100
-
467
RLA = 1.14 x
575
550
= 1.19
19XR Refrigeration cycle (centrifugal chiller)
■ The compressor continuously draws refrigerant vapour from the cooler, at a rate set by the amount of guide vane opening.
As the compressor suction reduces the pressure in the cooler, the remaining refrigerant boils at a fairly low temperature
(typically 3 to 6°C). The energy required for boiling is obtained from the water flowing through the cooler tubes.
With heat energy removed, the water becomes cold enough for use in an air-conditioning circuit or process liquid cooling.
■ After taking heat from the water, the refrigerant vapour is compressed. Compression adds still more heat energy and the refrigerant is quite warm (typically 37 to 40°C) when it is discharged from compressor into condenser.
■ Relatively cool (typically 18 to 32°C) water flowing into the condenser tubes removes heat from the refrigerant and the vapour condenses to liquid.
■ The liquid refrigerant passes through orifices into the FLASC
(Flash Subcooler) chamber. Since the FLASC chamber is at a lower pressure, part of the liquid refrigerant flashes to vapour, thereby cooling the remaining liquid. The FLASC vapour is recondensed on the tubes which are cooled by entering condenser water. The liquid drains into a float valve chamber between the FLASC chamber and cooler. Here a float valve forms a liquid seal to keep FLASC chamber vapour from entering the cooler. When liquid refrigerant passes through the valve, some of it flashes to vapour in the reduced pressure on the cooler side. In flashing, it removes heat from the remaining liquid. The refrigerant is now at a temperature and pressure at which the cycle began.
19XR REFRIGERANT CYCLE
17
1.
FLASC chamber
2.
Condenser water
3.
Condenser
4.
Condenser isolation valve
5.
Transmission
6.
Diffuser
7.
Guide vane motor
8.
Motor
9.
Guide vanes
10. Impeller
11. Compressor
12. Back pressure orifice
13. Oil cooling
14. Oil filter
15. Oil pump
16. Stator
17. Rotor
18. Refrigerant cooling isolation valve
19. Float valve chamber
20. Filter drier
21. Orificed fitting
22. Moisture/flow indicator
23. Orificed fitting
24. Thermostatic expansion valves (TXV)
25. Distribution pipe
26. Cooler isolation valve
27. Evaporator
28. Chilled water
29. Refrigerant liquid
30. Refrigerant vapour
31. Refrigerant liquid/vapour
9
10
Compressor components
1 2 3 4 5 6
16
1.
2.
3.
4.
5.
Motor stator
Motor rotor
Motor shaft journal bearings
Low speed bull gear
High speed shaft thrust bearing
6.
High speed shaft journal bearing
7.
Variable inlet guide vanes
8.
Impeller shroud
15 14 13 12 11 10 9 8
9.
Impeller
10.
Pipe diffuser
11.
High speed pinion gear
12.
Oil heater
13.
High speed shaft journal bearing
14.
Oil pump motor
15.
Oil filter
16.
Oil filter cover
7
Machine components
Front view
1 3 2
4
5
14
6
13
12
11
10
9
7
1.
Guide vane actuator
2.
Suction elbow
3.
Compressor
4.
Cooler, auto reset relief valve*
5.
Cooler pressure transducer
6.
Condenser in/out temperature thermistors
7.
Cooler in/out temperature thermistors
8.
Machine identification nameplate (situated on the starter cabinet side) - see figure ‘Rear view’ below
9.
Refrigerant charging valve
10. Typical flange connections
11. Oil drain valve
12. Oil level sight glass
13. Refrigerant oil cooler (hidden)
14. Branch circuit control box
Rear view
32
15
8
17
16
18 19
20
15. Condenser auto reset relief valves*
16. Circuit breaker
17. CVC
18. Unit-mounted starter (optional)
19. Motor sight glass
20. Cooler return-end waterbox cover
21. Cooler nameplate
22. Condenser nameplate
23. Typical waterbox drain port
24. Condenser return-end waterbox cover
25. Refrigerant moisture/flow indicator
26. Refrigerant filter/drier
27. Liquid line isolation valve (optional)
28. Linear float valve chamber
29. Vessel take-apart connector
30. Discharge isolation valve (optional)
31. Pumpout valve
32. Condenser pressure transducer
* One relief valve is standard. The valve option consists of two valves plus a changeover per heat exchanger.
21
31
30
29 28
27 26 25 24 23 22
11
12
Dimensions
1
2
D
C
E
5
A
4
B
3
1.
Motor service space (1219 mm)
2.
Recommended clearance above the machine
(915 mm)
3.
610 mm
4.
362 mm
5.
Tube removal space
E.
Float valve removal space - variable, depending on the unit height - see rear view on the previous page, item 28
Heat exchanger size
30 to 32
35 to 37
40 to 42
45 to 47
50 to 52
55 to 57
60 to 62
65 to 67
A (length, with nozzle-in-head waterbox)
2-pass* mm
1 or 3 pass** mm
4172
4693
4242
4763
4248
4769
4261
4782
4350
4870
4426
4947
4439
4959
4451
4972
B (width) mm
1670
1670
1880
1880
1994
1994
2096
2096
70 to 72
75 to 77
80 to 82
85 to 87
4978
5588
4997
5607
5194
5804
5220
5829
2426
2426
2711
2711
* Assumes both cooler and condenser nozzles on same end of chiller.
** 1 or 3 pass length applies if either (or both) cooler or condenser is a 1 or 3 pass design.
C (height)
- not shown) mm
2073
2073
2153
2153
2207
2207
2257
2257
2985
2985
3029
3029
A (length, marine waterbox
2-pass* mm
4496
5017
4591
5099
4591
5099
4591
5112
5385
5994
5398
6007
1 or 3 pass** mm
4997
5518
5099
5620
5099
5620
5111
5632
6058
6668
6121
6731
D mm
3747
4343
3757
4343
3747
4343
3747
4343
4267
4877
4267
4877
Frame size
3
4
5
6
7
8
Nozzle inlet/outlet size (in.) (nominal pipe size)
Cooler
1-Pass
10
10
10
10
14
14
Notes:
1. Service clearance must comply with local regulations.
2. Certified drawings available upon request.
2-Pass
8
8
8
10
12
14
3-Pass
6
6
6
8
10
12
Condenser
1-Pass
10
10
10
10
14
14
2-Pass
8
8
10
10
12
14
3-Pass
6
6
8
8
12
12
E mm
250
250
250
250
250
250
250
250
460
460
460
460
Application data, mounting arrangement
Unit levelling
Typical isolation Standard isolation
Support plate
Elastomeric pad
Jacking screw(s)
Soleplate
Level pad(s) standard isolation
Accessory soleplate package - levelling
Isolation with isolation package only (standard)
1. Support plate
2. Machine foot
3. 10 mm level base line
4. Shear flex pad (10 mm)
Note: Isolation package includes 4 shear flex pads.
Accessory soleplate detail - levelling
See note (1)
25 mm HRS soleplate
Support plate
Machine foot
Jacking screw
See note (2)
35 mm
Level base line
See note (3)
Floor line
Levelling pad
Notes:
1. Accessory soleplate package includes 4 soleplates,
16 jacking screws, leveling pads and shear flex pads.
2. Jacking screws to be removed after grout has set.
3. Thickness of grout will vary, depending on the amount necessary to level chiller. Use only pre-mixed nonshrinking grout, Celcote HT-648 or Master Builders
636, 38 to 57 mm thick, or equivalent.
13
Waterboxes - nozzle arrangements
A - Nozzle-in-head arrangement codes
Y
12
Sizes 4-5-6 11
10
Z
9
8 5
6
Z
7 4
3
Y
2
1
W X
Sizes 7 and 8
14
W Motor end
X Compressor end
Y Condenser
Z Evaporator
Standard waterbox arrangement codes
Pass Cooler waterboxes
In Out
Condenser waterboxes
1
2
8 5 A 11
5 8 B 2
7 9 C 10
4 6 D 1
3
* See certified drawings
7 6 E 10
4 9 F 1
2
11
12
3
3
12
P
Q
R
S
T
U
B - Marine nozzle arrangement codes
Size 3
Waterbox arrangement codes
Pass Cooler waterboxes
1
In Out
8 5 A
5 8 B -
-
Condenser waterboxes
2 7 9 C 10
4 6 D 1
3
* See certified drawings
7 6 E -
4 9 F -
-
-
-
-
12
3
Sizes 4-5-6
-
-
-
-
R
S
Waterbox arrangement codes
Pass Cooler waterboxes
In Out
Condenser waterboxes
1 9
6
6
9
A
B -
-
2 7 9 C 10
4 6 D 1
3
* See certified drawings
7 6 E -
4 9 F -
-
-
-
-
12
3
W Motor end
X Compressor end
Y Condenser
Z Evaporator
-
-
-
-
R
S
15
B - Marine nozzle arrangement codes (cont.)
Sizes 7 and 8
Waterbox arrangement codes
Pass Cooler waterboxes
1
2
Condenser waterboxes
In Out
8
5
5
8
A
B
-
-
7 9 C 10
4 6 D 1
-
-
12
3
3
* See certified drawings
7 6 E -
4 9 F -
-
W Motor end
X Compressor end
Y Condenser
Z Evaporator
-
-
-
-
R
S
16
Technical description
■ Water-cooled packaged liquid chiller for indoor installation, equipped with numerical control, and operating with chlorine-free refrigerant HFC-134a.
■ Regulations
◆ The unit characteristics must be published in accordance with ARI standards.
◆ The machines with CE marking must comply with the following European directives:
- Pressurised equipment directive (PED) 97/23/EC
- Machinery directive 98/37/EC, modified
- Low voltage directive 73/23/EEC, modified
- Electromagnetic compatibility directive 89/336/EEC, modified and the applicable recommendations of
European standards:
- Machine safety: electrical equipment in machines, general regulations, EN 60204-1
- Electromagnetic emission EN 50081-2
- Electromagnetic immunity EN 50082-2.
■ Quality assurance
◆ The unit shall be designed, manufactured and tested at a facility with a quality assurance system certified ISO 9001.
◆
◆
The unit shall be manufactured at a facility with an environment management system certified ISO 14001.
The unit must satisfy the quality control tests in the factory
(pressure and electrical tests).
■ Designed to ensure maximum compliance with European standard EN 60 204-1 (electrical safety), EN 50082-2 (EMC immunity), EN 50081-2 (EMC emissions) and with EN 378
(safety).
Compressor
■ One centrifugal compressor of the high-performance, singlestage type. Connections to the compressor casing use O rings instead of gaskets to reduce the occurrance of refrigerant leakage.
■ The open type impeller with machined shroud contours and impeller diameter optimize compressor efficiency for each specified application.
Cooler and condenser
■ Tubing is copper, high-efficiency type, with integral internal and external enhancement. Tubes are nominal 3/4-in. OD with nominal wall thickness of 0.635 mm measured at the root of the fin. Tubes are rolled into tube sheets and are individually replaceable. Tube sheet holes are double grooved for joint structural integrity. Intermediate support sheet spacing does not exceed 914 mm.
■ Waterboxes and nozzle connections are designed for 1034 kPa maximum working pressure unless otherwise noted.
Nozzles have grooves to allow use of Victaulic couplings.
■ The tube sheets of the cooler and condenser are bolted together to allow for field disassembly and reassembly.
■ Waterboxes have vents, drains, and covers to permit tube cleaning within the space shown on the drawings. A thermistor type temperature sensor is factory installed in each water nozzle.
■ The heat exchangers display a European code nameplate which shows the pressure-temperature data. A pressure relief valve is installed on each heat exchanger. A pressure relief valve device is installed on each heat exchanger which permits verification of the set point without transfer of the charge.
■ Cooler is designed to prevent liquid refrigerant from entering the compressor.
■ Tubes are individually replaceable from either end of the heat exchanger without affecting the strength and durability of the tube sheet and without causing leakage in adjacent tubes.
■ The condenser shell includes a FLASC (flash subcooler) which cools the condensed liquid refrigerant to a reduced temperature, thereby increasing the refrigeration cycle efficiency.
Starter, auxiliary box and control box
■ Galvanized sheet steel, polyester paint finish, colour light grey, with hinged access doors, containing:
◆ Starter (option)
◆ Auxiliary box includes control transformer for the CVC, and the oil heater.
◆ Control box includes the processor board and the Human
Interface (CVC).
Control functions
■ Set point function
The control provides the capability to view and change the leaving chilled water set point, entering chilled water set point, and demand limit set point at any time during chiller operating or shutdown periods. The controls allow for the specification of capacity control by either leaving chilled water or entering chilled water.
■ Service function
The control provides a password protected service function which allows authorized individuals to:
◆ View an alarm history file which contains the last 25 alarm/alert messages with time and date stamp. These messages are displayed in text form, not codes.
◆
◆
Execute a chiller controls test function for quick identification of malfunctioning components
View/modify chiller configuration
◆
◆
◆
View/modify chiller occupancy periods
View/modify schedule holiday periods
View/modify schedule override periods
◆ View/modify system time and date
■ Lead/lag function
Lead/lag function automatically controls two chillers, including the reversing sequence.
A third chiller can be added to the lead lag system as a standby chiller.
■ Communication
Interface with other CCN devices is available as standard. A
CCN/JBus (Carrier Comfort Network) interface facilitates communication with other BMS systems.
17
Typical piping and wiring
19XR Chiller with optional unit-mounted starter
17
18
19
3
13
12
8
7
15
1.
2.
3.
4.
5.
6.
7.
Disconnect
Unit mounted starter with control
(factory-installed)
Guide vane motor
Oil pump terminal box
Vents
Pressure gauges
Chilled water pump
8.
9.
Condenser water pump
Chilled water pump starter
10.
Condenser water pump starter
11.
Cooling tower fan starter
12.
To cooling tower
13.
From cooling tower
14.
To load
15.
From load
16.
Drain
17.
Piping
18.
Control wiring
19.
Power wiring
16
Important: Ensure correct phasing is followed for proper motor rotation.
2.
3.
4.
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 are available on request.
All wiring must comply with applicable codes.
Refer to Carrier System Design Manual for details regarding piping techniques.
Wiring not shown for optional devices such as:
• remote start-stop
• remote alarm
• optional safety device
• 4 to 20 mA resets
• optional remote sensors
18
Typical piping and wiring (cont.)
19XR Chiller with free-standing starter
20
21
22
15
13.
14.
15.
16.
17.
9.
10.
11.
12.
18.
19.
20.
21.
22.
5.
6.
7.
8.
1.
2.
3.
4.
Disconnect
Freestanding compressor motor starter
Compressor motor terminal box
Oil pump terminal box
Control cabinet
Vents
Pressure gauges
Chilled water pump
Condenser water pump
Chilled water pump starter
Condensing water pump starter
Cooling tower fan starter
Disconnect
Oil pump disconnect (see note 5)
To cooling tower
From cooling tower
To load
From load
Drain
Piping
Control wiring
Power wiring
18
17
19
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 are available on request.
2. All wiring must comply with applicable codes.
3. Refer to Carrier System Design Manual for details regarding piping techniques.
4. Wiring not shown for optional devices such as:
• remote start-stop
• remote alarm
• optional safety device
• 4 to 20 mA resets
• optional remote sensors
5. Oil pump disconnect may be located within the enclosure of item 2 - free-standing compressor motor starter.
19
Order No. 11995-20, 05.2004. Supersedes order No: 11995-20, 01.1998.
Manufacturer reserves the right to change any product specifications without notice.
The cover photo is solely for illustration purposes, and is not contractually binding.
Manufactured by: Carrier SA, Montluel, France.
Printed on Totally Chlorine Free Paper.
Printed in the Netherlands.
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