Product Catalog. Cold Generator Compact Chiller Series Model CICB 30Tons (60 Hz) R-410A CG-PRC029E-EN. June 2017

Transcription

1 Product Catalog Cold Generator Compact Chiller Series Model CICB 30Tons (60 Hz) R-410A June 2017 CG-PRC029E-EN

2 Introduction Trane Cold Generator Compact Series model CICB water-cooled chillers are designed with flexibility, expandability and serviceability in mind.these high efficiency compact chillers provide quiet, reliable operation and are built to withstand demanding continuous duty cycles. Each compact chiller meets or exceeds ASHRAE energy efficiency standard that went into effect January 1, Mechanically cleanable and serviceable shell-and-tube water cooled condenser makes the compact chiller uniquely suitable for open loop cooling water systems with cooling towers. At the heart of the CICB product line is the highly efficient scroll compressor. Additionally the CICB utilizes dual refrigerant circuited brazed plate evaporators and dual refrigerant circuited shell-andtube condensers for increased redundancy and serviceability. CICB water-cooled compact chillers can be easily combined to meet higher capacity demands and are easy to install in most building layouts.this makes them the ideal choice for retrofit or new building designs where reliability, serviceability, high efficiency, flexibility, and expandability are critical Ingersoll Rand CG-PRC029E-EN

3 Introduction Copyright This document and the information in it are the property oftrane, and may not be used or reproduced in whole or in part without written permission.trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change. Trademarks Revision History All trademarks referenced in this document are the trademarks of their respective owners. Updated certification information in Mechanical Specifications. Updated AHRI logo on back cover. CG-PRC029E-EN 3

4 Table of Contents Introduction...2 Features and Benefits...5 Application Consideration...9 Model Number Descriptions...13 General Data...14 Performance Data...15 Controls...16 Electrical...22 Electrical Connections...23 Dimensions and Weights...26 Mechanical Specifications CG-PRC029E-EN

5 Features and Benefits Standard Features Trane Cold Generator Compact Series model CICB water-cooled chillers are complete, factoryassembled units designed for a wide range of comfort and process cooling applications, but also have the ability to be piped into a multistage array of up to ten (10) chillers for much larger capacities. All CICB compact chillers meet or exceed ASHRAE energy efficiency requirements effective 1/1/2015. All CICB compact chillers are AHRI performance certified under AHRI Standard 550/590(I-P) and ETL safety compliant under ANSI/UL1995, CAN/CSA C , 4 th edition. Mechanically cleanable and serviceable shell-and-tube water cooled condenser makes the chiller uniquely suitable for open loop cooling water systems with cooling towers. Removable water header section design allows the compact chiller to be pulled out of an array of chillers without disturbing water flow or operation of remaining chillers in the array. CICB compact chiller has low pumping power requirements for both chilled and condenser water circuits. Factory-assembled CICB compact chillers are pressure tested, dehydrated and charged with operating charge of POE compressor oil and 410A refrigerant before shipment. Every CICB compact chiller is run tested over a range of full and part load conditions before shipment, minimizing startup delay. A data log is retained at the factory for each unit shipped. CICB compact chiller dimensions: With removable water header section and all standard and optional valving: 30 wide X 72 tall X 60 deep. Without removable water header section: 30 wide X 72 tall X 48-7/8 deep. All CICB compact chillers have two (2) independent refrigerant circuits for redundancy. Each circuit has a scroll compressor, a dual-circuit brazed-plate evaporator, a dual-circuit shell-andtube condenser, a liquid line filter drier, a liquid line solenoid valve, a sight glass, a thermal expansion valve and a hot gas injection solenoid valve. Each refrigerant circuit on all CICB compact chillers has four (4) service ports, including one charging port located between the expansion device and the evaporator inlet. The standard hot gas injection feature is suction pressure actuated and is provided to stabilize the suction pressure/temperature in the evaporator during transient conditions which potentially avoids nuisance safety trips. Core temperature sensors are installed in every CICB evaporator as a redundant low water temperature safety. CICB compact chillers have manual isolation valves and Victaulic couplings making it easy to isolate the heat exchangers. UL-listed dual-circuit brazed-plate evaporators have chilled water inlet and outlet water pressure transducers that report water differential pressure to the unit controller which can be read from the keypad display for flow verification and system balancing. Mechanically cleanable dual-circuit shell-and-tube condensers have inlet and outlet water pressure gauge service ports for manually measuring the water differential pressure for flow verification and for system balancing. The condenser refrigerant side (shell side) is ASME stamped and the water side (tube side) has a maximum allowable working pressure of no less than 300 psig at 150 F. Every CICB compact chiller has a detachable water header section consisting of left-hand or right-hand chilled water or condenser water customer connections. Customer connections are CG-PRC029E-EN 5

6 Features and Benefits Factory-Installed Options Victaulic and arrive ready for immediate connection to the customer supply/return lines and, if applicable, to other adjacent CICB compact chillers. All cold refrigerant and water surfaces are insulated with closed-cell flexible insulation. All CICB power distribution and control components are located in one (1) two-level control cabinet with operator keypad/display, non-fused disconnect, alarm light, run light and off/auto switch mounted on the exterior of the control cabinet door. The CICB unit controller is a microprocessor based controller capable of performing all of the operational, safety, data retention, communication and fault related functions of the chiller while providing compressor lead/lag logic. BACnet /IP and Modbus TCP/IP (or RTU) are standard chiller interface protocols for building automation and control network communication if needed. CICB compact chillers come with a complete unit parts warranty (excluding refrigerant) for one (1) year from startup or 18 months from shipment, whichever occurs first. The integral condenser water regulating valve option is available to stabilize and maintain the refrigerant condensing pressure within the operating limits of the CICB compact chiller. The valve would replace one of the manual isolating valves that come standard on every chiller and would also be used to isolate the condenser from the cooling water circuit when needed. A fused disconnect with through-the-door operator is available on most CICB models and would replace the standard non-fused disconnect. A 100kA SCCR electrical rating is available in lieu of standard 5kA SCCR electrical rating. Sound attenuation enclosures are exterior panels designed to completely enclose the compressor section of the CICB compact chiller. Compressor blankets are used to dampen the sound produced by the compressors and can be used alone or in combination with the sound attenuation enclosures. The factory-installed phase/power monitor is designed to protect the chiller from premature failure and damage due to common voltage faults such as voltage unbalance, over/under voltage, phase loss, reversal, incorrect sequencing and rapid short cycling. BACnet MS/TP, Johnson N2 and LonTalk protocols for building automation and control network communication are available for the CICB unit controller. A controller expansion board can be installed if advanced peripheral control is needed. 6 CG-PRC029E-EN

7 Features and Benefits Factory-Provided/Field-Installed Options Wye-strainers with removable stainless steel 20-mesh screen, epoxy paint, tapped NPT blowdown connection and inlet/outlet pressure gauge taps are available in sizes ranging from 2-8. Wye-strainers with a minimum of 20-mesh are required to be field-installed before the customer connection to the chiller s evaporator inlet. An evaporator flow-proving device is required for all CICB applications. A paddle style liquid flow switch is available with a NEMAType 4X enclosure for field-installation. When opting to connect more than one (1) CICB compact chiller together to form a larger capacity, multistage chiller array, the factory-provided/field-installed array controller can control up to ten (10) CICB compact chillers. The array controller package also includes: The entering and leaving chilled water temperature sensors and temperature wells to be field-installed in the array s common supply and return chilled water lines (factory-provided/ field-installed) All couplings and fittings needed to connect adjacent chillers (factory-provided/fieldinstalled) CICB header pipe size optimization for its position in the chiller array (factory-installed) Wireless router for wireless access to each individual chiller and the array control panel (factory-provided/field-installed, Ethernet cable field-provided) For critical cooling applications, the N+1 option allows for a dormant backup chiller to be available in a multiple CICB compact chiller array. If an active CICB compact chiller fails, the N+1 logic will open the chilled and condenser water valves and enable the backup chiller while closing the chilled and condenser water valves and disabling the failed chiller.the N+1 option package includes: The array controller package (factory-provided/field-installed) One (1) backup CICB compact chiller to be connected to the N number of CICB compact chillers needed to satisfy the design cooling load (factory-provided/field-installed) Array controller N+1 logic programming (factory-installed) Motorized valves on all CICB compact chillers chilled and condenser water outlets (factoryinstalled) Neoprene isolator pads can be provided for all (6) load bearing points on the CICB compact chillers. The wheel kit, containing (4) swiveling casters, is easily installed to predrilled holes in the base of each CICB compact chiller and allows the chiller to be easily maneuvered and rolled into position across smooth surfaces. The rigging bracket kit includes four (4) steel rigging brackets with 1-5/8 lifting holes designed for chiller s weight and easily mounted to predrilled holes on chiller frame. Hardware is included. The forklift pocket kit include four (4) steel forklift pockets designed for the chiller s weight and easily mounted to predrilled holes on chiller frame. Hardware included. Ice build logic can be factory programmed into the CICB unit controller for use with a fieldprovided and installed dry contact closure device in ice storage applications. Available for single chiller application only. Condenser water temperature sensors allow measurement and monitoring of the condenser entering and leaving water temperatures. Ambient temperature sensor allows for measuring and monitoring of ambient temperature. CG-PRC029E-EN 7

8 Features and Benefits Other Features and Benefits Flexibility & Expandability Serviceability Single Source Responsibility Trane Cold Generator CICB compact series scroll chillers were specifically scaled to fit through a standard 36 doorway and to fit onto a standard elevator, ensuring fast and easy delivery and installation. Because the CICB compact series can be applied as an individual chiller or applied as a high capacity multi-stage, multi-chiller array by using the optional array controller package, the CICB compact chillers can be configured to meet capacity needs ranging from 30 tons to 300 tons. For typical mechanical room configurations sometimes encountered with retrofit and renovation applications, CICB compact chiller arrays are not required to be installed side-byside. If limited on space or dealing with a challenging layout,trane will design custom pipe sizes to suit the unique needs of your facility s chiller array layout. The array controller option allows the CICB compact chiller to be an ideal solution for facilities with growing occupancy and structural expansion plans because chillers can be added as capacity needs increase. The CICB compact chiller was designed in such a manner that the compressors, evaporator, condenser, refrigerant specialties and water pipe components can all be easily serviced or removed. When installed in an array, these components can all be easily serviced or removed from any one chiller in the array while the other chillers in the array continue to operate. Standard, integral valving makes it possible to isolate the CICB heat exchangers for routine maintenance. Once isolated, both heat exchangers have inlet and outlet Victaulic connections readily accessible to allow for backflushing, chemical cleaning and/or rodding of the shell-andtube condenser without having to remove the exchanger. If a heat exchanger must be removed and replaced, all necessary work can be performed at the front of the chiller without having to remove other unrelated parts. If needed, an entire CICB compact chiller can be removed from an array of chillers by using the integral valving, Victaulic connections and the detachable water header section. Because the detachable water header section was designed with its own support frame, the water header section can be left in place to feed adjacent chillers allowing them to continue operating. In an array application, if the array controller fails or if communication is lost between the individual CICB compact chillers and the array controller, the individual chillers can be switched to standalone mode and continue operating on their own to control the chilled leaving water temperature within the control zone of a pre-set default setpoint. The CICB compact controller stores operational and diagnostic information that can be accessed locally using the chiller keypad/display or the PC connection inside the chiller control panel.this information can also be accessed from a remote location using an Ethernet or other type interface. Single source responsibility allows the customer to source all building comfort systems through their localtrane Sales Office. 8 CG-PRC029E-EN

9 Application Consideration Unit Location Trane Cold Generator Compact Series model CICB water-cooled chillers are designed for indoor installations only that remain above 32 F and below 125 F at all times. Locate the chiller away from sound-sensitive areas on a level foundation or flooring strong enough to support 150 percent of the operating weight and large enough to keep with service clearances. Also, the chiller foundation or flooring must be rigid enough to minimize vibration transmission. Please see General data, p. 14 for compressor sound data and Dimensions and Weights, p. 26 for unit operating weights and clearances to ensure the chiller will work for your application. If necessary, options are available for sound attenuation and vibration reduction. Water Circuit Requirements CICB compact chillers are equipped with brazed plate evaporators. As always, the water/fluid circuits to be used with these chillers should be designed and installed following sound engineering practices and procedures as well as any applicable local and industry standards. However, for the evaporator circuit, it is imperative the utmost attention be focused on filtration and water quality. Prior to connecting a CICB compact chiller into a newly installed or existing water piping system, it is required to flush the system with a detergent and hot water mixture to remove previously accumulated dirt and other organics. In old piping systems with heavy encrustation of inorganic materials, a water treatment specialist should be consulted for proper passivation and/or removal of these contaminants. For more specifics on the flushing procedure and for the type of strainers to be used during the procedure, please see Appendix A Piping System Flushing Procedure, p. 35. Filtration Particulate fouling is caused by suspended solids (foulants) such as mud, silt, sand or other particles in the heat transfer medium.the best way to avoid particulate fouling is to have good water treatment and keep all system water clean and with open loop system water, maintain proper bleed rates and make up water. A strainer with a 20-mesh screen (or screen with 0.5 mm sized openings or less) is required to be installed at the individual compact chiller (or compact chiller array) inlet to protect the brazed plate evaporator. Chilled water wye strainers are available as a factory-provided, field-installed option. In keeping with best practices, inlet condenser water must also have appropriate filtration and water treatment. If an application is highly susceptible to foulant contamination, additional filtration methods should be investigated. Water quality Poor water quality can cause another type of fouling called scaling. Scaling is caused by inorganic salts in the water circuit of the heat exchangers. Scaling increases pressure drop and reduces heat transfer efficiency. The likelihood of scaling increases with increased temperature, concentration and ph. In addition to scaling, poor water quality can cause other issues like biological growths and corrosion. Therefore, water quality and water quality control needs to be an application consideration. Please review the water quality requirements for use with the brazed plate heat exchanger on the CICB compact chiller. For more specifics on the water treatment requirements, please see Appendix A Piping System Flushing Procedure, p. 35. Table 1. Water property limits Water Property Concentration Limits Alkalinity (HCO - 3 ) ppm Sulfate (SO 2-4 ) Less than 70 ppm HCO 3 - / SO 4 2- Greater than 1.0 Electrical Conductivity μs/cm ph Ammonia (NH 3) Less than 2 ppm CG-PRC029E-EN 9

10 Application Consideration Table 1. Water property limits (continued) Water Property Chlorides (Cl - ) Less than 300 ppm Free Chlorine (Cl 2) Less than 1 ppm Hydrogen Sulfide (H 2S) Less than 0.05 ppm Free (aggressive) Carbon Dioxide (CO 2) Less than 5 ppm Total Hardness ( dh) Nitrate (NO 3) Less than 100 ppm Iron (Fe) Less than 0.2 ppm Aluminum (Al) Less than 0.2 ppm Manganese (Mn) Less than 0.1 ppm Evaporator Fluid Temperatures and Flow Requirements Standard evaporator leaving water temperature range for the CICB compact chiller is 42 F - 60 F. For evaporator loops containing the appropriate amount of glycol, the chilled water leaving temperature range can be shifted to 15 F - 60 F. The evaporator minimum and maximum flow rates are listed in General Data, p. 14. In general, the listed flow rate ranges will develop temperature differentials across the evaporator between 7 F - 20 F. If your application conditions are unconventional or do not fit these requirements, please contact your localtrane representative to determine if the CICB compact chiller is the correct chiller for your needs. For all CICB compact chiller applications, the flow to the evaporator must be proven using a chilled water flow-proving device. A factory-provided flow-proving device is available as a field-installed option. Chilled Water System Volume Concentration Limits As a minimum, a 3-minute loop time is required for the evaporator chilled water system. For your specific application, you can calculate the required chilled water system volume by multiplying the design evaporator flow rate in GPM by 3 minutes. Depending on the system, a tank with baffles for mixing may need to be installed into the loop to meet the required volume. Condenser Fluid Temperatures and Flow Requirements Standard condenser entering water temperature range for the CICB compact chiller is 65 F F. The condenser leaving water temperature (LWT) maximum is 130 F, and the condenser LWT minimum is 77 F. When the condenser LWT is lower than 77 F, the refrigerant condensing temperature can drop below 80 F and fall outside of the CICB compressors operating envelope. For these applications, provisions must be made to control the condenser water that results in a stable refrigerant condensing temperature/pressure that remains above 80 F (235 psig) throughout all steady state, part load and transient operating conditions. The integral factory-installed condenser water regulating valve option is perfect for these applications and is highly recommended. The condenser minimum and maximum flow rates are listed in General Data, p. 14. In general, the listed flow rate ranges will develop temperature differentials across the condenser between 5 F - 30 F. If your application conditions are unconventional or do not fit these requirements, please contact your localtrane representative to determine if the CICB compact chiller is the correct chiller for your needs. 10 CG-PRC029E-EN

11 Application Consideration Variable Flow Applications CICB compact chillers can be applied in variable flow applications where the flow is varied and controlled by others. The flow being delivered to the chiller must not go outside the stated minimum and maximum flow rates in General Data, p. 14. Also, the chilled water system volume should be calculated using the highest evaporator flow rate to be delivered to the chiller, and the rate of change in flow rate must not exceed 10% of design flow GPM per minute. Multiple Chiller Applications Anytime more than one (1) CICB compact chiller is piped together (to form an array of chillers) for higher capacity and/or redundant chiller applications, a field-installed array controller package will be provided from the factory. The array controller included in the package can control up to (10) CICB compact chillers. The number of compact chillers that can be physically piped together to form an array and share a common header is limited to approximately 250 total tons. In general, if the total tonnage is 250 tons or less, one common evaporator supply/return line and one common condenser supply/return line can be used. If the total tonnage needed is greater than 250 tons, the flow from these common lines can be split between two arrays of chillers. Figure 1 shows examples of acceptable and unacceptable array piping configurations. For help with determining the most effective array configuration for your application, please contact your localtrane sales representative. Figure 1. Chiller configuration examples The header system on an array of chillers has optimized chilled and condenser water pipe sizes suited for the flow rates specific to each chiller s location in the array.this means that the header pipes will not all be the same size, but will graduate down from larger to smaller to keep velocities up at each chiller. The customer would tie into the array's header system at the end of the array with the largest piping. All left-hand or all right-hand customer connections must be specified. See Figure 6, p. 27 for CICB array dimension details. CG-PRC029E-EN 11

12 Application Consideration To provide power to an array, power must be connected to each individual compact chiller. Depending on the size of the application, an alternative method for powering an array may be available. Please contact your localtrane sales representative for more information. 12 CG-PRC029E-EN

13 Model Number Descriptions Digits 1-3 Unit Type CIC = Compact indoor chiller Digit 4 Model B = Model B Brazed plate evaporator Shell and tube condenser Digits 5-7 Nominal Tons 030 = 30 nominal tons Digit 8 Unit Voltage A = 208/60/3 B = 230/60/3 F = 460/60/3 G = 575/60/3 Digits 9, 10 Design Sequence ** = Factory Assigned Digit 11 Agency Listing E = ETL/ETL-C listed to meet US and Canadian safety standards Digit 12 Remote Interface (Digital Comm) 0 = None 2 = LonTalk 4 = BACnet MS/TP 5 = BACnet IP 6 = Modbus 8 = Johnson N2 Digit 13 Water Piping Package Evaporator Entering 0 = None without piping package 1 = 2-inch chilled water piping 2 = 2.5-inch chilled water piping 3 = 3-inch chilled water piping 4 = 4-inch chilled water piping 5 = 5-inch chilled water piping Digit 14 Water Piping Package Evaporator Leaving 0 = None without piping package 1 = 2-inch chilled water piping 2 = 2.5-inch chilled water piping 3 = 3-inch chilled water piping 4 = 4-inch chilled water piping 5 = 5-inch chilled water piping Digit 15 Water Piping Package Condenser Entering 0 = None without piping package 1 = 2-inch chilled water piping 2 = 2.5-inch chilled water piping 3 = 3-inch chilled water piping 4 = 4-inch chilled water piping 5 = 5-inch chilled water piping Digit 16 Water Piping Package Condenser Leaving 0 = None without piping package 1 = 2-inch chilled water piping 2 = 2.5-inch chilled water piping 3 = 3-inch chilled water piping 4 = 4-inch chilled water piping 5 = 5-inch chilled water piping Digit 17 Motorized Control Valves 0 = None manual balancing isolating valves only 1 = Integral discharge pressure control condenser water regulating valve 2 = Motorized chilled water isolating valve 3 = Both chilled water and condenser water control valves Digit 18 Evaporator Temperature Range 0 = Standard cooling 42 to 60 F (5.6 to 15.6 C) 1 = Standard cooling/ice-making 20 to 60 F (-6.7 to 15.6 C) Digit 19 Power Connection D = Standard non-fused disconnect switch F = 100kA SCCR fused disconnect switch Digit 20 Sound Attenuator 0 = No sound attenuation 3 = Compressor sound blankets 4 = Factory sound enclosure cabinet 5 = Both sound enclosure cabinet and compressor blankets Digit 21 Power Monitor 0 = None 1 = With power monitor Digit 22 Neoprene Isolators 0 = None 1 = Neoprene isolators (ship loose) Digit 23 Evaporator Fluid Type 0 = Water 2 = Ethylene glycol 3 = Propylene glycol 4 = Methanol Digit 24 Condenser Fluid Type 0 = Water 2 = Ethylene glycol 3 = Propylene glycol Digit 25 Special Options 0 = None 1 = With special option(s) CG-PRC029E-EN 13

14 General Data Table 2. General data Size 30 Compressor Quantity 2 Nominal 60 Hz tons 15/15 Compressor Sound Data (a) dba 81 Compressor Sound Data with Sound Blankets Only (b) dba 75 Compressor Sound Data with Sound Cabinet Only (c) dba 68 Evaporator Water Storage gal 2.95 Minimum Flow gpm 45 Maximum Flow gpm 102 Condenser Water Storage gal 4.3 Minimum Flow gpm 35 Maximum Flow gpm 99 General Unit Number of Independent Refrigerant Circuits 2 Nominal Horsepower per Circuit 15 Refrigerant R-410A Refrigerant Charge per Circuit lbs 15.5 Oil Type Trane OIL00080 Oil Charge per Compressor oz 122/122 (a) Compressor manufacturer sound power is given at rated compressor AHRI conditions measured in free space for tandem compressor sets. (b) Manufacturer data taken at compressor AHRI conditions measured in free space for tandem compressor sets using compressor blanket option. (c) Manufacturer sound level data (uncertified) taken at AHRI conditions measured in free space 4 feet from the chiller with sound cabinet installed. 14 CG-PRC029E-EN

15 Performance Data Table 3. CICB performance data Unit Size 30 % Load Tons kw % Load EER IPLV EER 20.4 Notes: 1. Rated in accordance with AHRI Standard 550/ , based on TOPSS version 185: evaporator temperatures of 54 F/44 F, condenser temperatures of 85 F/ 94.3 F with condenser relief at part loads, evaporator fouling of F.ft 2.h/Btu and condenser fouling of F.ft 2.h/Btu. 2. Consult Trane representative for additional performance information. 3. EER - Energy Efficiency Ratio (Btu/w-h) CG-PRC029E-EN 15

16 Controls CICB compact chiller control panel is designed to save space and provide one convenient area for all necessary field-wiring.the control panel consists of two levels which separate the power and control components. The power distribution section is located on the fixed back panel and contains the input power ground lug and non-fused disconnect switch for customer connection, power distribution block, across-the-line contactors, current transformers and control circuit power transformer with primary and secondary fuses. The controls section is located on the hinged interior panel and contains the unit controller with expansion board, display with keypad (control panel door), power monitor (optional) and service friendly terminal strips to facilitate circuit diagnosis and connection of field wiring. Microprocessor-Based Controller The unit controller is a durable microprocessor-based controller designed to be the primary manager of the CICB compact chiller.the controller is capable of performing all operational, data retention and communication functions for the chiller while providing lead/lag logic to equalize run time on the individual compressors. When necessary, it will perform appropriate evasive actions in the event a sensor input returns a reading that is out of range based on setpoints. The data retention capabilities of the unit controller include storage of up to 1,008 packets of information that can be graphically presented based on an adjustable, set time interval. The controller also maintains a fault history including the date and time of day for each fault (up to the last 99 occurrences). If a fault results in a compressor lockout, 120 seconds of history prior to the lockout is saved.the history leading up to the lockout gives the technician a clear picture of what the chiller was experiencing just before the failure and is very helpful for diagnosing the causes. 16 CG-PRC029E-EN

17 Controls Operator Interface The unit controller can be accessed using the keypad-display screen and uses a clear language format for easy interpretation by the user.the keypad-display is mounted to the front of the control panel door along with the non-fused disconnect switch actuator, off/auto switch, run indicator light and alarm indicator light. All information needed to run the chiller is available and can be changed and viewed using the keypad-display screen; however, a laptop or PC is invaluable for ease of use, for viewing dynamic on-line display screens, for better graphing capability and for downloading data files. A free PC/ laptop software package called MCS-Connect is available for download at Once installed, the unit controller can be accessed from the PC or laptop by using one (1) of the four (4) different ports located inside the control panel: 1. RS-485 network access through RS-232 serial port located on backside of keypad-display 2. RS-485 network access port located on backside of keypad-display 3. RS-485 network access port located on corner of unit controller 4. Ethernet port located on corner of unit controller Note: If only one of the RS-485 network accesses is already being used (#1-#3) for BMS communication or for an array controller, the Ethernet port would be the only port that can be used for PC or laptop access. CG-PRC029E-EN 17

18 Controls Building Communications When thetrane Cold Generator CICB compact chiller is used in conjunction with a building management system (BMS) such astracer, the chiller can be monitored and given input from a remote location.the chiller can be set up to fit into the overall building control strategy by using remote run/stop input, remote demand limit reset and/or remote chilled water reset functions. As standard, the unit controller Ethernet port is always ready to talk BACnet IP and Modbus TCP/ IP (Modbus RTU uses the RS485 network port). BACnet MS/TP, Johnson N2 and LonTalk are optional protocols that can be factory-installed.the unit controller can facilitate the following BMS communications: Remote Off/Auto signal (input from BMS) Demand Limit Reset signal (input from BMS) Chilled WaterTemperature Reset signal (input from BMS) Customer Alarm relay (view only) Chiller Run Indication (view only) Entering Chilled WaterTemperature (view only) Leaving Chilled WaterTemperature (view only) Chilled Water Flow Switch input (view only) Condenser Pump relay (view only) Chilled Water Pump relay (view only) 18 CG-PRC029E-EN

19 Controls System Protection A complete safety lockout system with alarms protects the CICB compact chiller operation to potentially avoid compressor and evaporator failures. The unit controller directly senses pressures, temperatures, amperage, motor faults, etc. All control variables that govern the operation of the chiller are evaluated every second for exact control and protection.the following is an abbreviated list of safeties that are incorporated into the standard chiller algorithm control. For a complete list, please refer to the more detailed controls manual, CG-SVX030*-EN. No Flow Protection To protect the chiller from no water flow to the evaporator, the chiller is enabled to run only if the required flow proving device indicates there is flow present. If the chiller is active and flow is lost; the chiller will lock out, and an alarm is generated. Low Suction Pressure To protect the compressors and evaporator, if the refrigerant suction pressure drops below the set point value for a specified period of time, a safety trip occurs.this safety is bypassed when the compressor is in a Pump Down state. Unsafe Suction Pressure To protect the compressors and evaporator, if the refrigerant suction pressure drops below the set point value for a specified period of time, the chiller will immediately lock out, and an alarm is generated. Freeze Protection To protect the evaporator from low water temperatures, the chilled water temperature is monitored inside the core of the evaporator and leaving the evaporator. If theses temperatures fall below their set point temperatures for the set period of time, the entire system will lock out and an alarm is generated. Hot Gas Injection Working in conjunction with the low suction pressure and freeze protection safeties to avoid nuisance safety trips, the hot gas injection valve is opened when the suction pressure goes below the lower set point value and allows hot discharge gas to be injected into the line directly before the inlet to the evaporator. The valve will stay open until the suction pressure rises safely above the upper set point level. High & Low Discharge Pressure, High & Low Superheat, High & Low Compressor Amps The compressors will be locked out if any one of these control variables rises above the upper set point value or falls below the lower set point value for the set amount of time for each, and an alarm is generated. Optional Phase/Power Monitor The factory-installed phase/power monitor continuously monitors the incoming power supply to the chiller for low voltage, phase rotation reversal, loss of phase and phase imbalance. Should one of these parameters be incorrect, the phase/power monitor relay will lock out (de-energize) and the fault LED on the monitor will blink.the unit controller will indicate the lockout, and an alarm is generated. As an additional layer of system protection, mechanical high and low pressure switches are used in conjunction with the refrigerant circuit high and low pressure transducers and unit controller. CG-PRC029E-EN 19

20 Controls Standard Peripheral Control Features The following peripheral control features and program logic come standard on all CICB compact chillers. Designated terminals on the field connection terminal strip in the control panel are provided for field connection of: Remote Off/Auto (dry contact closure from a remote device - input) Required Chilled Water Flow Proving Device (dry contact closure from a remote device - input) Remote Alarm (dry contact closure to a remote device - output) Standard Capacity Control Optional Capacity Control Required Chilled Water Pump Enable (dry contact closure for 1 chilled water pump - output) Condenser Water Pump Enable (dry contact closure for 1 condenser water pump - output) Standard capacity control on the CICB compact chillers is accomplished by staging the scroll compressors on and off. The unit controller will maintain a set point leaving chilled water temperature within a control zone using proportional, integral derivative (PID) logic. If the leaving chilled water temperature starts to decrease and falls below the set point, the unit controller will turn one compressor off. A further reduction in temperature will result in the second compressor being turned off. The reverse is true as the leaving chilled water temperature increases. Lead/lag logic is used to even the run time on the individual compressors. Chilled water temperature reset can be accomplished in two ways. In buildings with a building management system, the CICB unit controller allows the BMS to communicate an offset to the chilled water temperature set point. If a BMS is not being used, the unit controller can accept a fieldprovided 0 to 5 VDC analog input signal. As the input voltage varies away from center (2.5V), the chilled water temperature set point will be offset proportionally. Note:This control logic is factoryinstalled and must be denoted at the time of ordering. Demand limiting is a form of capacity control that limits the number of capacity steps the compact chiller is allowed to operate. It can be accomplished in the same two ways as the chilled water temperature reset: through BMS or field-provided 0 to 5 VDC input signal. Note:This control logic is factory-installed and must be denoted at the time of ordering. 20 CG-PRC029E-EN

21 Controls Array Control The optional array controller package offers yet another form of capacity control.this option allows up to ten (10) CICB compact chillers to be controlled and operated like a single, much higher capacity, multistage chiller. With this option, capacity modulation and equalization of compressor run time is shifted to the array controller. The array controller uses the same standard capacity control logic as an individual CICB unit controller but with more stages of capacity.there are other similarities and some differences in CICB array control when compared to individual CICB unit control. The list below briefly summarizes the comparison of the two: The factory-provided, field-installed CICB array control panel uses the same microprocessorbased controller and keypad-display as an individual CICB unit control panel. Power (115VAC) must be provided to a circuit breaker inside the array control panel to power the array control circuit.the array control panel also contains a field connection terminal strip and door-mounted off/auto switch, run indicator light and alarm indicator light. The array controller is accessed in the same manner as the unit controller, through the keypaddisplay or PC/laptop. Note: If only one of the RS-485 network accesses is already being used (#1- #3) for BMS communication, the Ethernet port would be the only port that can be used for PC or laptop access; or vice versa, if the Ethernet port is already being used (#4) for BMS communication, one of the RS-485 network access ports would be the only means for PC or laptop access. The array controller can facilitate the same standard and optional BMS protocols and communications for an array as with a single chiller application. In addition, the array controller can also communicate the optional array condenser entering and leaving water temperatures for viewing by the BMS (if applicable). System protection is still provided by the individual unit controllers with the addition of the following being monitored and recorded by the array controller: Chiller Array Fault Low/No array chilled water flow Chiller Array Fault Low array chilled LWT Chiller Unit Fault Displays chiller unit number for unit where fault occurred The same peripheral control features can be controlled by the array controller for an array of CICB compact chillers as with an individual unit application, but with a few extras: Required Chilled Water Pump Enable and optional 2nd Chilled Water Pump Enable (dry contact closures for 2 chilled water pumps - output) Condenser Water Pump Enable (dry contact closures for 2 condenser water pumps - output) Array On/Off Status (dry contact closure for remote device output) If communication between the individual CICB compact chiller unit controllers and the array controller is lost or the array controller fails for whatever reason, the individual CICB compact chillers can be shifted into manual mode to operate independent from the array controller and will maintain a manual mode chilled LWT set point. CG-PRC029E-EN 21

22 Electrical Table 4. Electrical data Size Rated Voltage Qty 30 Compressor # Refrigerant Nominal Circuits Tons RLA (each) LRA (each) Control kw Minimum Circuit Ampacity Unit Wiring Max Fuse Size Recommended Dual Element Fuse Size /60/ /60/ / /60/ Notes: 1. Use copper conductors only. 2. Local codes may take precedence. 3. Voltage Utilization Range: ± 10% of rated voltage. Rated voltage (use range): /60/3 ( ), 460/60/3 ( ), 575/60/3 ( ). 22 CG-PRC029E-EN

23 Electrical Connections Figure 2. Field wiring CICB unit control panel, single chiller application Representation - Front Panel Representation - Back Panel PANEL GROUND Unit Controller Voltage 115v DSW1 TBA WARNING Hazardous voltage! Disconnect all electrical power including remote disconnects before servicing unit. Follow proper lockout/ tagout procedures to ensure power cannot be inadvertently energized. Failure to do so can cause death or serious injury. CAUTION Use copper conductors only! Unit terminals are not designed to accept other type conductors. Failure to use copper conductors may cause equipment damage. CAUTION Do not energize the unit until checkout and start-up procedures have been completed REQUIRED: Chilled Water Pump #1-125 VAC Max OPTIONAL: Condenser Pump #1-125 VAC Max OPTIONAL: Remote Alarm VAC Max REQUIRED: Flow Switch/Flow-Proving Device - Input from Dry Contact Closure Only OPTIONAL: Remote Off/Auto - Input from Dry Contact Closure Only Notes: 1. All customer control-circuit wiring must have a minimum rating of 150V. All field wiring must be in accordance with National Electric Code and State & Local requirements. (Required) Factory supplied or approved alternate field installed flow proving device connection. 3 CG-PRC029E-EN 23

24 Electrical Connections Figure 3. Field wiring CICB unit control panel, array application Representation - Front Panel Representation - Back Panel RELAY M-1 RELAY M-2 RELAY M-3 RELAY M-4 RELAY M-5 RELAY M-6 RELAY M-7 RELAY M-8 RELAY M-9 RELAY M-10 Ethernet Cable to 16 Port Ethernet Switch in Array Control Panel PANEL GROUND Unit Controller Voltage 115v DSW1 TX RS-485 ETHERNET TBA First Chiller in Array To TX RS-485 on Next Chiller in Array 7 _ + TERMINATION TX485 JP4 _ GND TX RS Middle Chiller(s) in Array, if Applicable OPTIONAL: Remote Alarm VAC Max OPTIONAL: Remote Off/Auto - Input from Dry Contact Closure Only 6 7 Last Chiller in Array 7 TERMINATION TX485 JP4 To TX RS-485 on Next Chiller in Array _ + _ GND TX RS TERMINATION TX485 JP4 _ GND TX RS _ + _ + _ From Array From TX RS-485 on From TX RS-485 on Controller MCS I/O Previous Chiller in Array Previous Chiller in Array WARNING Hazardous voltage! Disconnect all electrical power including remote disconnects before servicing unit. Follow proper lockout/ tagout procedures to ensure power cannot be inadvertently energized. Failure to do so can cause death or serious injury. CAUTION Use copper conductors only! Unit terminals are not designed to accept other type conductors. Failure to use copper conductors may cause equipment damage. Notes: 1. All customer control-circuit wiring must have a minimum rating of 150V. 2. All field wiring must be in accordance with National Electric Code and State & Local requirements. 3. All field provided RS-485 network cable must be 24 GA, shielded, 2-conductor with drain wire (Belden 9841 or equivalent). 4. All field provided ethernet cables must be Cat 5 or higher ethernet straight (patch) cables. 5. Only the first chiller in array is connected from TX RS-485 port to the Array Controller MCS I/O port in the Array Control Panel. 6. Consecutive chillers in array are daisy-chained through TX RS-485 ports. 7. Ensure all TX RS-485 Berg Termination Jumpers are removed EXCEPT on the last chiller in the array. CAUTION Do not energize the unit until checkout and start-up procedures have been completed. 24 CG-PRC029E-EN

25 RELAY M-1 Yellow Electrical Connections Figure 4. Field wiring CICB array control panel Ethernet Cables From Each Chiller Module (Field Provided) Ethernet Cable From Wireless Router (Factory Provided) Power Cord From Wireless Router (Factory Provided) 16 Port Ethernet Switch PANEL GROUND REQUIRED: Evap EWT REQUIRED: Evap LWT OPTIONAL: Cond EWT OPTIONAL: Cond LWT OPTIONAL: Ambient Temp Black Shield White Black Shield White Black Shield White Black Shield White Black Shield White OPTIONAL: Shield CHW Reset 0-5VDC Analog Signal REQUIRED: ROUTE RS-485 NETWORK CABLE TO "TX RS-485" ON CONTROLLER OF FIRST CHILLER IN ARRAY SENSOR 1SENSOR 2SENSOR 3 SENSOR 4SENSOR 5 SENSOR 6 Array Controller 115V RELAY M-2 RELAY M-3 RELAY M-4 RELAY M-5 RELAY M-6 RELAY M-7 RELAY M-8 RELAY M-9 RELAY M ETHERNET OPTIONAL: MCS I/OTX RS-485 Array On/Off Status VAC Max MCS I/O GND _ REQUIRED: -+ Flow Switch/Flow-Proving Device - + Input from Dry Contact Closure Only Circuit Breaker VAC Neutral OPTIONAL: Remote Alarm VAC Max REQUIRED: Chill Water Pump #1-125 VAC Max OPTIONAL: Chill Water Pump #2-125 VAC Max OPTIONAL: Condenser Pump #1-125 VAC Max OPTIONAL: Condenser Pump #2-125 VAC Max OPTIONAL: Remote OFF/Auto - Input from Dry Contact Closure Only WARNING Hazardous voltage! Disconnect all electrical power including remote disconnects before servicing unit. Follow proper lockout/ 2. tagout procedures to ensure power cannot be inadvertently energized. requirements. Failure to do so cause death or serious injury. CAUTION 4. Use copper conductors only! Unit terminals are not designed to accept other type conductors. Failure to use copper conductors may cause equipment damage. CAUTION Do not energize t he unit until checkout and start-up procedures have been completed. NOTES: 1. All field provided control-circuit wiring must have a minimum rating of 150V. All field wiring must be in acco rdance with NEC, State & Local 3. All field provided ethernet cables must be Cat 5 or higher ethernet straight (patch) cables. All field provided RS-485 network cable must be 24 GA, shielded, 2- conductor with drain wire (Belden 9841 or equivalent) CG-PRC029E-EN 25

26 Dimensions and Weights Dimensions Figure 5. CICB unit dimensions 5 1/4" 15 1/2" 1 7/8" 6" TYP 42 7/8" TYP 3" TYP 2X 24" 6X 1 1/2" 3/4" ID X 2 1/2" OD CLIPPED PLATE WASHERS SHALL BE PLACED OVER THE 1 1/2 BASE PLATE HOLES WHEN SECURING THE UNIT TO THE FOUNDATION AND/OR SUPPORT STRUCTURE- FACTORY SUPPLIED. 2X 3" QTY " VIC CUSTOMER CONNECTIONS, LEFT SIDE (FLUSH WITH MOUNTING FRAME) 4X 0" QTY " VIC CUSTOMER CONNECTIONS, RIGHT SIDE (INSET FROM MOUNTING FRAME) 4X 1 7/8" 72" 30" 48 7/8" 56 1/8" TO EVAP LINES 56 3/4" TO COND LINES 60" SEE NOTE /2" COND IN 30 1/4" COND OUT 40 1/8" EVAP IN 5" EVAP OUT CHILLER HEADER NOTES: 1. IN SOME VIEWS, PARTS MAY BE HIDDEN FOR CLARITY THE HEADER RACK/PIPING CAN BE SEPARATED FROM THE CHILLER FOR SIZE RESTRICTIVE INSTALLATIONS OR MAINTENANCE. HEADER PIPES TO BE CAPPED ON OPPOSITE END FROM CUSTOMER CONNECTIONS. CAPS AND COUPLINGS ARE FACTORY SUPPLIED. 26 CG-PRC029E-EN

27 CG-PRC029E-EN 30" TYP 2X 3" 1" TYP 2X 7" TYP 2X 24" TYP "W" 4X "R" 72" QTY 4 -"A" VIC CUSTOMER CONNECTIONS, (IF RIGHT CONFIG IS ORDERED) 6n X 1 1/2" 3/4" ID X 2 1/2" OD CLIPPED PLATE WASHERS SHALL BE PLACED OVER THE 1 1/2 BASE PLATE HOLES WHEN SECURING THE UNIT TO THE FOUNDATION AND/OR SUPPORT STRUCTURE- FACTORY SUPPLIED "R" NOTES: 1. THE "RIGHT" CONFGURATION IS SHOWN. PARTS MAY BE HIDDEN FOR CLARITY. 2. THE HEADER RACK/PIPING CAN BE SEPARATED FROM THE CHILLER FOR SIZE RESTRICTIVE INSTALLATIONS OR MAINTENANCE. 3. HEADER PIPES TO BE CAPPED ON OPPOSITE END FROM CUSTOMER CONNECTIONS. CAPS AND COUPLINGS ARE FACTORY SUPPLIED. 4X "L" QTY 4 -"A" VIC CUSTOMER CONNECTIONS, (IF LEFT CONFIG IS ORDERED) 3" TYP 42 7/8" TYP 6" TYP 15 1/2" TYP 15 1/2" TYP 60" pipes (Left Configuration ONLY**) customer connections at the end of header connections at the left most frame edge to from right most frame edge to customer When facing the control boxes, dimension right most frame edge 5" EVAP OUT 40 1/8" EVAP IN 30 1/4" COND OUT 15 1/2" COND IN customer connections, see Note 3. **Header pipes will be capped on opposite end from lower or higher than normal design flowrates needed. *Contact Engineering for approval/module header sizes if at the header pipes (Left Configuration ONLY**) left most frame edge to customer connections "L" Dimension = When facing the control boxes, dimension from "R" Dimension = 56 1/8" TO EVAP LINES 56 3/4" TO COND LINES 48 7/8" SEE NOTE 2 flowrates ONLY* Pipe Size) for "n" # of chillers for standard Customer connection size (Victaulic Sch 40 "W" Dimension = Width of array from left most frame edge to "A" Dimension = Figure 6. CHILLER HEADER 5 1/4" Dimensions and Weights CICB array dimensions 27

28 Dimensions and Weights Clearances Notes: Clearance of 42 is required in front of chiller to other electrically grounded parts. Two units facing each other or other live parts require a clearance of clearance is recommended above the chiller. See Figure 8 and Figure 9, p. 29 for recommended clearance requirements for array installations. Figure 7. Clearance CICB 30 ton, single chiller application 36" 36" 36" 42" 28 CG-PRC029E-EN