PRODUCT DOCUMENTATION
Contents
1. From To Temperature 21 C 40 C Room air conditions Humidity ratio 5 5 g kg 11 g kg Relative humidity 20 60 Storage conditions Temperature 20 C 50 C V 10 Power supply tolerances SC Liebert CRV PD 265086 15 05 2014 2 2 Application of Liebert CRV 2 3 2 For A units Outdoor temperature lower limit 20 C To install an air conditioner in places in which external temperature reaches very low values sometime in the year requires some means of control to maintain adequate condensing pressures to ensure proper liquid system opera tion With low temperatures the refrigerant condensates in pipeline and the liquid tends to fulfill the condenser It s mandatory to install the following components 1 NON RETURN VALVE liquid line Install a non return valve in the liquid line directly out of the condenser It doesn t allow the liquid to come back to the condenser that means efficiency loss and dangerous stress for the compressor 2 VARIEX FAN SPEED CONTROL Use Variex fan speed control to regulate the condensing pressure and have a continuous and better subcooling control It s suggested to have 3 HORIZONTAL CONDENSER POSITION The condenser horizontal disposition vertical flow is necessary to reduce subcooling variations due to direct wind exposure very important to have a good subcooling control For all exceptions contact the Liebert Sales Representative2. Installation depth mm 1250 1250 Weight kg 220 230 Liebert CRV PD 265086 15 05 2014 Installation drawings Fig 8b Hole on the raised floor for piping and electrical connections P d P P 2 J 1 3 R A CH 21 89 190 Liebert CRV PD 265086 15 05 2014 FRONT VIEW UNIT AREA UNIT AREA FRONT VIEW Installation drawings Fig 8c Electrical connections entry TOP INLET BOTTOM INLET N FRONT VIEW Liebert CRV PD 265086 15 05 2014 Fig 9a CRO11RA CRO21RA connections TOP CONNECTIONS F E 2 ILT E 8 oar 3 o HF o 2 lO S 3 pp l 58 5 EC HVT1 EC HVT2 n S EC LVT1 2 EC LVT2 g N e 2 P 84 60 116 40 Unit Top Connection ILT Refrigerant liquid line inlet ISO 7 1 OGT Refrigerant gas line outlet ISO 7 1 CD Condensate drain ISO 7 1 HF Humidifier feed opt ISO 7 1 HD Humidifier dr
3. 105 106 121 121 121 125 127 126 128 22 395 172 173 800 801 802 803 804 805 806 807 9 2 Liebert CRV PD 265086 15 05 2014 Refrigerant Hydraulic and Electrical Connections 9 1 Electrical field connections descriptions 50 Hz 15 Alarma de inundaci n liquistat La alarma de inundaci n detecta la presencia de agua y activa una alarma El sensor est conectado entre los bornes 105 y 106 Pueden conectarse hasta 5 sensores al mismo dispositivo de alarma de inundaci n para comprobar varios puntos bajo del equipo STANDARD ELECTRICAL CONNECTIONS 1 Primary high voltage entrance Quantity 2 28mm diameter concentric knockouts located in bottom of box Secondary high voltage entrance Quantity 2 35mm diameter concentric knockouts located in top of box Primary low voltage entrance Quantity 1 18mm diameter knockouts located in bottom of unit Secondary low voltage entrance Quantity 2 22mm diameter knockouts located in top of box Earth ground Terminal for field supplied earth grounding wire Remote unit shutdown Replace existing jumper between terminals 52 amp 53 with field supplied normally closed switch having a minimum 75VA 24VAC rating Use field supplied Class 1 wiring 7 Customer alarm inputs Terminals for field supplied normally closed contacts having a minimum 75VA 24VAC rating between terminals 61 amp 63 Use field supplied Class 1 wiring 8 General
4. 20 9 20 9 5 16 26 06 23 8 20 6 20 6 5 49 26 09 21 2 20 3 20 3 5 68 25 98 19 5 19 7 19 7 5 94 25 64 17 1 19 4 19 4 6 14 25 54 15 5 19 3 19 3 6 27 25 57 13 3 19 7 17 9 6 01 25 71 14 8 18 9 17 7 6 40 25 30 12 18 6 18 6 6 53 25 13 11 2 Specifications Air cooled 22 C DB 55 RH Net Total kW Net Sensible kW Unit Power Input kW Heat rejection kW Supply Air Temperature C 22 C DB 50 RH Net Total kW Net Sensible kW Unit Power Input kW Heat rejection kW Supply Air Temperature C 10 4 18 6 8 9 15 1 3 78 6 53 14 18 25 13 12 4 11 1 10 1 18 3 9 4 16 1 3 79 6 60 13 89 24 9 11 8 10 3 Cooling capacities are net values All capacities are nominal values actual performance will be 5 NOTE Data rated with Standard filter Some options or combinations of options may result in reduced airflow Consult factory for recommendations Refer to Tab 6f for standard air flow Liebert CRV PD 265086 15 05 2014 Specifications Electrical data 6 2 Tab 6b Electrical data Configuration Cooling Fan compressor Cooling Electrical heating dehumidification Fan compressor electrical heaters Cooling Humidification Fan compressor humidifier Without condensate pump option Electric data Power Model supply CRO11 230 1PH 50Hz CR021 400 3N 50 Hz CR011 230 1PH 50Hz CR021 400 3N 50 Hz CR011 230 1PH 50Hz
5. Outdoor temperature higher limit This limit is determined by coupled condenser model In any case the max external temperature is 48 CExceed ing of this limit or a lack of maintenance will caused a compressor stop by HP safety thermostat Reset to normal operation can only be carried out manually Remote Condenser To ensure correct operation best performance and longest life the units must be connected to remote condensers approved by Emerson Network Power The warranty clauses are no longer valid if unit is connected to a not approved remote condenser Relative position room unit vs 50 Hz remote condenser From unit to condenser max distance equivalent length m 1 100 From unit to condenser max geodetic height m Max above 30 Max below 8 Requirements Pipe diameter 1 see the User Manual Oil traps on vertical line of gas refrigerant m every 6 For lenght higher than 30m condenser oversized 15 1 For more details see User Manual 2 Positive difference in height condenser above conditioner Negative difference in height condenser below conditioner 2 4 Positioning Units placement This chapter provides some ideas of typical installation of the Liebert CRV unit s shows several examples of the server room layouts and applications using Liebert CRV units In order to eliminate the transmission of vibrations avoid any contacts between Liebert CRV unit and the racks of th
6. Unit Power Input kW Heat rejection kW Supply Air Temperature C 37 C DB 24 RH Net Total kW Net Sensible kW Unit Power Input kW Heat rejection kW Supply Air Temperature C 35 C DB 26 RH Net Total kW Net Sensible kW Unit Power Input kW Heat rejection kW Supply Air Temperature C 32 C DB 29 RH Net Total kW Net Sensible kW Unit Power Input kW Heat rejection kW Supply Air Temperature C 30 C DB 34 RH Net Total kW Net Sensible kW Unit Power Input kW Heat rejection kW Supply Air Temperature C 28 C DB 38 RH Net Total kW Net Sensible kW Unit Power Input kW Heat rejection kW Supply Air Temperature C 28 C DB 45 RH Net Total kW Net Sensible kW Unit Power Input kW Heat rejection kW Supply Air Temperature C 25 C DB 45 RH Net Total kW Net Sensible kW Unit Power Input kW Heat rejection kW Supply Air Temperature C 25 C DB 40 RH Net Total kW Net Sensible kW Unit Power Input kW Heat rejection kW Supply Air Temperature C Liebert CRV PD 265086 15 05 2014 Specifications Air cooled Performances air cooled CRO11RA Cond Temp 45 C 11 8 11 8 2 99 14 79 26 3 11 6 11 6 3 17 14 77 23 7 11 4 11 4 3 30 14 70 22 11 2 11 2 3 57 14 77 19 4 11 11 3 58 14 58 17 6 10 9 10 9 3 63 14 53 15 9 11 3 10 7 3 57 14 87 16 1 10 7 10 6 3 77 14 37 13 3 10 4 10 4 3 78 14 18 13 5 CRO21RA
7. 2 6 16 16 D 831 75 H 1112 W 2340 HCR43 230 1 50 46 0 17000 53 0 1 10 5 0 5 2 16 16 D 831 92 H1112 W 2340 HCR51 230 1 50 52 0 17000 53 0 1 10 5 0 5 2 22 16 D 831 93 H 1112 W 2340 HCR59 230 1 50 62 0 15600 53 0 1 10 5 0 5 2 22 16 D 831 102 H1112 W 3340 HCR76 230 1 50 78 0 25500 55 0 1 65 7 5 7 8 22 16 D 831 136 H 1112 W 3340 HCR88 230 1 50 92 0 23400 55 0 1 65 7 5 7 8 22 16 D 831 165 H 1112 W 4338 HCR99 230 1 50 130 0 32000 57 0 2 20 10 0 10 0 28 22 D 831 220 H 1112 Tab 7e Technical data and performance of air cooled condenser Liebert HCR 3ph Total Heat 3 Refrigerant Power Rejection Air deer Input SE ZP connections Model supply THR Volume dB A Power d A mm Dimensions Weight V Ph Hz R410A m3 h Smif kW A Gas line Liquid line mm kg kW Pid mm mm W 1340 HCR24 400 3 50 23 75 8600 53 0 0 55 1 3 1 3 16 16 D 831 60 H 1112 W 1340 HCR33 400 3 50 31 49 7400 53 0 0 55 1 3 1 3 16 16 D 831 75 H 1112 W 2340 HCR43 400 3 50 45 84 17000 56 0 1 10 2 4 2 4 16 16 D 831 92 H1112 W 2340 HCR51 400 3 50 51 5 17000 56 0 1 10 2 4 2 4 22 16 D 831 93 H 1112 W 2340 HCR59 400 3 50 61 03 15600 56 0 1 10 2 4 2 4 22 16 D 831 102 H1112 W 3340 HCR76 400 3 50 78 0 25500 58 0 1 65 3 6 3 6 22 16 D 831 136 H 1112 W 3340 HCR88 400 3 50 92 0 23400 58 0 1 65 3 6 3 6 22 16 D 831 165 H 1112 W 4338 HCR99 400 3 50 116 5 33200 59 0 2 20 4 8 4 8 28 22 D 831 220 H 1112 7 2 Liebert CRV PD 265086 15 05 2014 Heat Rejections A v
8. DX mode The compressors starts and either the air flow or the evaporator surface is reduced increasing modulation capacity of compressor thereby causing dehumidification refer also to Control manual e N B If during dehumidification the ambient temperature drops below a specified level dehumidification will be stopped if necessary see LOW LIMIT intervention in Control manual In dehumidification mode the air after passing over the coil it s reheated if needed by electrical heater to re stabilize the initial temperature 4 4 Humidification optional e The humidifier creates steam which is distributed into the air via the steam distribution pipe Liebert CRV PD 265086 15 05 2014 Microprocessor Controls 5 1 iCOM Control Fig 5 a amnphnnpbhjaan arans er Liebert CRV models are controlled by iCOM ppm Medium Board Fig 5 a m T P The control board is housed in the electrical panel and it is connected to the remote display to be installed in the container room connection cable is included e The standard user interface is a graphical display 128 x 64 pixels backlit showing parameter values and the relevant symbols codes in a tree menu It features navigation push buttons and status leds Self explanatory icons are used for the menu layout of the display e Status Report of the latest 400 event messages of the unit e Graphic Data Records for temperature and humidity e Both high and
9. Specifications 6 1 Performances air cooled 6 2 Electric data 6 3 Sound data Heat Rejections 7 1 Coupling of Liebert CRV A type 50Hz CE mark air conditioning units with remote air cooled condensers Liebert HCR Installation drawings Refrigerant Hydraulic and Electrical Connections 9 1 Electricalfield connections descriptions 50 Hz Refrigeration amp Hydraulic Circuits Product Description 1 1 Product Description The Liebert CRV is an air cooled full featured direct expansion Thermal Management unit to be installed within a row of high density computing racks in a hot aisle cold aisle configuration Air heated by the room equipment enters the unit from the hot aisle it is filtered cooled conditioned and subsequently returned to the cold aisle Supply air flow direction can be easily modified via the optional air discharge baffles to the left side or to the right side or to both directions so it may be placed between the racks or at the end of the row It maximizes cooling effectiveness reduces the occurrence of hot spots and improves the overall system efficiency The Liebert CRV provides all the necessary functions provided by a standard precision air conditionerincluding cooling heating humidification dehumidification air filtration condensate management temperature control alarm functions and data communications It is targeted for small and medium data centers and it is op
10. demands Our solutions are supported globally by local Emerson Network Power service technicians Learn more about Emerson Network Power products and services at www EmersonNetworkPower eu While every precaution has been taken to ensure accuracy and completeness herein Emerson assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions Specifications subject to change without notice EmersonNetworkPower eu Emerson Business Critical Continuity and Emerson Network Power are trademarks of Emerson Electric Co or one of its affiliated companies 2013 Emerson Electric Co Locations Emerson Network Power Global Headquarters 1050 Dearborn Drive P O Box 29186 Columbus OH 43229 USA Tel 1 6148880246 Emerson Network Power EMEA Via Leonardo Da Vinci 16 18 Zona Industriale Tognana 35028 Piove di Sacco PD Italy Tel 39 049 9719 111 Fax 439 049 5841 257 Cooling NetworkPower Eu Emerson com EMERSON CONSIDER IT SOLVED
11. low priority alarms activate a visual indicator and buzzer e Input for remote on off and volt free contacts for simple remote monitoring of low and high priority alarms high low temperature high low refrigerant pressure fan control failure compressor control failure and others are available e LAN management functions provided as standard include stand by in case of failure of the unit in operation the second one starts automatically and automatic rotation e All settings are protected through a 3 Level password system D e Automatic restart is provided after a power failure Tab 5a Technical Data Technical Data iCOM Medium E2prom 4Mbit 512kbit Flash memory 32Mbit RAM memory space 128Mbit Microcontroller Coldfire 32Mbit Analogue Input 3 x 0 10V 0 5VA 20mA selectable 2 PTC NTC 3 NTC Digital Input 9 x opto coupled Analogue Output 2x0 10V Digital Output 7 triacs output and 2 relay output Time and date function buffered by Ll battery Hirobus Lan connectors 2 RJ45 sockets for unit in LAN remote display Ethernet network connectors 1 RJ45 socket CAN bus connectors 2 RJ12 sockets Hironet connectors 1 RJ9 socket for RS485 direct connection to proprietary supervision Liebert CRV PD 265086 15 05 2014 Microprocessor Controls 5 2 CDL Graphic Display option e Large graphic display 320
12. o contacts for remote indication of unit alarms LIQUI TECT SENSOR Is a solid state water sensor that has no moving parts and is hermetically sealed to keep out dust and dirt When the sensor detects the presence of moisture the alarm system is activated Liebert CRV PD 265086 15 05 2014 3 2 Operation Unit operation is completely automatic The below sequence explains how the unit operates e The air sucked in by the continuously operating fans enters the unit e The air is immediately filtered The TEMPERATURE sensor or HUMITEMP temperature rel humidity sensor depends on unit configuration verifies the state of the inlet air and relays this information to the control system e The air is treated and then blown out of the unit e The control system compares the relayed information to the set point and proportional band values programmed into its memory it then commands the air conditioner to treat the air as follows see also Control manual 4 1 Cooling e Direct expansion mode DX The compressor is started and the cold refrigerant flows through the evaporator thus cooling the air passing over it For compressor operation see Control manual 4 2 Heating e Electrical heating optional the heating elements heat the air passing over them There is one heating steps activate in case of dehumidification if supply air temperature is too low for heating logic see Control manual 4 3 Dehumidification e
13. ooo g Q e e x x te SS NA S IS e e D kian Ho d QE SER aus a S e jl of g kel P a c ei LL H B Q c D H E B ic a L aa 1 LIN op mo s Wire bridge m Le els ete CM o X9 deg oleo Let S e Le I Jeu Je le ler Je La e IP le len les Le Jee SP Ssigissig SPRING TERMINALS oS SSS es SPRING TERMINALS X1 2 29
14. 0 3 50 58 60 16250 53 50 1 60 3 60 4 40 28 28 D 1509 156 H 1105 W 2602 MCMO070 230 1 50 69 00 16000 53 10 0 94 3 46 8 80 35 35 D1269 200 H 972 W 2602 MCMO80 230 1 50 89 56 21200 55 00 1 55 7 50 8 80 35 35 D1269 200 H 972 W 3102 MCL110 400 3 50 117 20 32500 57 00 3 20 7 20 8 80 35 35 D 1509 273 H 1102 W 5045 MCM160 230 1 50 179 12 42400 60 00 310 1500 17 60 28 28 D 1269 380 H 972 W 4527 MCL165 400 3 50 175 80 48750 66 80 4 80 10 8 13 2 35 35 D 1509 404 H 1105 The nominal heat rejection capacities refer to the following operative conditions e refrigerant R410A e temperature differences 15 K e T condensation dew point Toutdoor e liquid sub cooling 3K e height of the installation 0 m above the sea level e for different conditions refer to NewHirating program e clean exchange surfaces The levels of sound pressure here included are measured in the same operative conditions and are referred to 5 m far from the unit at 1 5 m in height in free field conditions All Liebert HCR air remote condensers are Liebert CRV PD 265086 15 05 2014 7 3 Heat Rejections A version CE marked Conform to the following European Directives Machine Directive 98 37 CE PED 97 23 CEE LVD 2006 95 EC EMC 2004 108 EC EN61000 6 2 EN 61000 6 3 Frame is made up of a sturdy aluminium structure Units are factory equipped with electric board 230V 1ph 50Hz T with main disconnector IP65 and with
15. 21 6 5 6 5 6 5 6 5 19 57 19 57 6 5 6 5 0 8 0 8 At nominal operating condition condensing Temp 45 C inlet air condition 37 C 24 RH FLA Max operating current LRA Locked rotor Amps Liebert CRV PD 265086 15 05 2014 LRA A 3x0 1 5x0 1 18 36 NOMINAL 3x2 3 5x2 3 2 72 4 66 1 5 1 5 4 5 4 5 0 75 0 75 POWER kW Specifications Sound data 6 3 Sound data Tab 6c Liebert CRV Sound Data The following tables show sound levels for every octave band frequency CRO011 Air Cooled Tested E Airflow Octave band frequency Hz Sound Unit SPL Level Speed Level 31 5 63 125 250 500 1000 2000 4000 8000 dB A 2m f f m3 h eve dBA 100 3128 79 3 793 818 81 808 776 798 748 678 84 8 71 9 80 2700 PWL 755 755 78 772 77 788 76 T1 o 81 69 2 50 1527 635 635 66 652 65 618 64 59 52 69 65 3 CRO241 Air Cooled Tested EUR Airflow Octave band frequency Hz Sound unit SPL Level suction Speed 31 5 63 125 250 500 1000 2000 4000 8000 dB A 2m f f m3 h Level dB A dBA 100 4630 80 1 80 1 826 818 81 6 784 806 756 686 85 6 72 6 85 4050 PWL 774 774 799 791 789 757 779 729 659 82 9 69 1 50 2183 647 64 7 67 2 664 662 63 652 60 2 532 70 2 64 5 Level PWL Sound Power Level Liebert CRV PD 265086 15 05 2014 Heat Rejections A version 7 1 Coupling of Liebert CRV A type
16. 50Hz CE mark air air cooled conditioning units with condensers Liebert HCR HCR condensers are especially designed to be coupled with the Liebert CRV A type air conditioning units power supplied at 50Hz CE market within a standard range of external air temperature from 20 C to 46 C The HCR family comes with a factory installed stepless fan speed controller especially designed and setted for usage with R410A refrigerant and digital scroll refrigerant circuit remote Tab 7a Coupling of Liebert HCR Condensers with Liebert CRV 300DX air conditioning units External temperature up to 35 C External temperature up to 40 C External temperature up to 46 C MODEL standard noise low noise standard noise low noise standard noise low noise CRO11RA 1x HCR17 1x HCR33 1x HCR33 1x HCR43 1x HCR43 1x HCR51 CRO21RA 1 x HCR33 1x HCR43 1x HCR43 1x HCR51 1x HCR51 1x HCR59 Tab 7b Coupling of Liebert MMC Premium Condensers with Liebert CRV 300DX External temperature up to 35 C External temperature up to 40 C External temperature up to 46 C MODEL standard noise standard noise standard noise CRO11RA 1x MCS028 1x MCM040 1x MCM040 CRO21RA 1x MCM040 1x MCM055 1x MCL055 Tab 7c Coupling of Liebert MMC Basic Condensers with Liebert CRV 300DX External temperature up to 35 C External temperature up to 40 C External t
17. CR021 400 3N 50 Hz FLA A 16 48 16 48 19 20 19 20 32 27 29 20 LRA A 19 70 37 70 26 20 44 20 39 27 44 20 type B 25 A C 25 A C 32 A C 32 A C 40 A C 32 A C RESIDUAL CURRENT CIRCUIT BREAKERS lAn 0 3A 400V The cables have to be sized in compliance with local standards and according to the type and characteristics e g Amperes of installation The specific power of the user installed switch must be lower than 300 000 A x s Prescriptions on the differential relay required to the user e For special places healthcare facilities etc comply with the local regulations e Forordinary places a low sensitivity is suggested 300mA coordinated with the value of the ground heater IEC364 Ra lt 50 la Art 413 1 4 1 CEI 64 8 only universal type B B RCD protective devices are permitterd e Incase of frequent over voltages with mains impulse it is advisable to install a selective differential and to evaluate the need for adopt ing other devices COMPONENT FAN COMPRESSOR HUMIDIFIER ELECTRICAL HEATER CONDENSATE PUMP POWER SUPPLY 230 V 1 PH 50 Hz 400 V 3 PH 50 Hz 230 V 1 PH 50 Hz 400 V 3 PH 50 Hz 230 V 1 PH 50 Hz 400 V 3 PH 50 Hz 230 V 1 PH 50 Hz 400 V 3 PH 50 Hz 230 V 1 PH 50 Hz 400 V 3 PH 50 Hz MODEL CRO11 CRO21 CRO11 CRO21 CRO11 CRO21 CRO11 CRO21 CRO11 CRO21 OA A FLA A 3x0 9 3x1 7 5x1 7 3 75 11
18. H Thermal Management For Business Critical Continuity Liebert CRV300DX 50 Hz 10 21 kW A Version PRODUCT DOCUMENTATION Ze EMERSON Network Power Liebert CRV PD 265086 15 05 2014 Contents Contents The product conforms to European Union directives 2006 42 EC 2004 108 EC 2006 95 EC 97 23 EC Units are supplied complete with a Test Certificate Conformity Declaration and Component List concerning mechanical electrical electromagnetic and pressure equipment safety Liebert CRV units are CE marked as they comply with the European directives C Liebert CRV PD 265086 15 05 2014 Product Description Application of Liebert CRV Liebert CRV Operation Microprocessor Controls Specifications Heat Rejections Installation drawings Refrigerant Hydraulic and Electrical Connections Refrigeration amp Hydraulic Circuits Contents 1 General Overview 1 1 Product Description 2 Application of Liebert CRV 2 1 First check 2 2 Selection of Lieber CRV unit s 2 3 Operating limits 2 4 Positioning units placement 2 5 Temperature sensors 3 Liebert CRV 3 1 Standard features 3 2 Optional features 4 Operation 4 1 Cooling 4 2 Heating 4 3 Dehumidification 4 4 Humidification optional Liebert CRV PD 265086 15 05 2014 10 Microprocessor Controls 5 1 iCom Control 5 2 CDL Graphic Display option
19. Vs and two IntelliSlot communication card housings are included as standard 2T RACK TEMPERATURE SENSORS Consist of a vented case with two temperature probes Up to 10 2T housings 20 temperature probes can be connected to a Liebert CRV One 2T housing and both sensor probes are to be attached to a rack the cooling unit is conditioning The sensors provide real time direct feedback to the cooling unit to optimize the amount of cooling and airflow required increasing energy efficiency and ensuring proper rack inlet air temperatures The sensor data can also be reported to remote BMS and monitoring systems The sensor network consists of one CAN wire leaving the cooling unit and connecting to a 2T sensor Each remaining 2T sensor is connected to the previous sensor often referred to as a daisy chain configuration REMOTE SHUTDOWN TERMINAL Provides the customer with a location to remotely shut down the unit COMMON ALARM CONTACT Provides the customer with a set of normally open n o contacts for remote indication of unit alarms CABINET The exterior steel panels are custom powder coated to protect against corrosion The double wall constructed side panels separate the 1 2 2 0 Ib ft insulation from the airstream The unit is mounted on casters for quick installation and provided with levelling feet Version without casters and levelling feet is available as an option This version is meant for unit installation on base frame in case the ra
20. ain ISO 7 1 DP Pump drain ISO 7 1 EC HV1 Electrical supply high voltage EC HV2 Electrical supply high voltage EC LV1 Electrical supply low voltage EC LV2 Electrical supply low voltage Liebert CRV PD 265086 15 05 2014 BOTTOM CONNECTIONS Refrigerant Hydraulic and Electrical Connections EC LVB2 712 OGB EC HVI 94 77 5 39 CRO11RA CR21RA OD 12 Rp 1 2 CU SWEAT OD 16 Rp 5 8 CU SWEAT Rp 1 2 Rp 5 8 Hole 48 Hole 48 Hole 22 Hole 22 co 5 Unit Bottom Connection Refrigerant liquid line inlet ISO 7 1 Refrigerant gas line outlet ISO 7 1 Condensate drain ISO 7 1 Humidifier feed opt ISO 7 1 Humidifier drain ISO 7 1 Pump drain ISO 7 1 Electrical supply high voltage Electrical supply high voltage Electrical supply low voltage Electrical supply low voltage CRO11RA CR21RA OD 12 Rp 1 2 CU SWEAT OD 16 Rp 5 8 CU SWEAT ID 48 ID 48 H
21. alarm On any alarm normally open dry contact is closed across terminals 400 401 for remote indication 2 AMP 24VAC max load Use Class 1 field supplied wiring 9 Warning alarm On any alarm normally open dry contact is closed across terminals 300 301 for remote indication 2 AMP 24VAC max load Use Class 1 field supplied wiring 10 Compressor motor on On any call for compressor operation normally open dry contact is closed across terminals 72 amp 73 2 AMP 24VAC max load Use Class 1 field supplied wiring 11 Fan motor on On any call for fans operation normally open dry contact is closed across terminals 70 amp 71 2 AMP 24VAC max load Use Class 1 field supplied wiring N Paro OPTIONAL ELECTRICAL CONNECTIONS 12 Smoke sensor alarm with smoke sensor option The smoke sensor is factory installed and senses the delivery air it is connected across terminals 61 62 and send a visual and an audible alarm This smoke sensor is not intended to function as or replace any room smoke detection system that may be required by local or national codes 1 AMP 24VAC max load Use Class 1 field supplied wiring 14 Condensate alarm with condensate pump option On pump high water indication normally open dry contact is closed across purple wire for remote indication install inside the box near the pump 1 AMP 24VAC max load Use Class 1 field supplied wiring OPTIONAL LOW VOLTAGE TERMINAL PACKAGE CONNECTIONS 15 Fl
22. d a signal to the local alarm and shut down the unit upon high water condition HUMIDIFIER A steam generating canister humidifier is factory installed in the cooling unit and is operated by the iCOM control system It is complete with disposable cylinder all supply and drain valves steam distributor and electronic controls The need to change the canister is inticated on the iCOM display if available The humidifier is designed to operate with water conductivity from 125 500 50Hz microS cm System automatically fills and drains as well as maintains the required water level based on conductivity An air gap within the humidifier assembly shall prevent backflow of the humidifier supply water The humidifier is removable from the rear of the cabinet ELECTRIC REHEAT The electric reheat coils are low watt density 304 stainless steel fin tubular construction protected by thermal safety switches and controlled in one stage INTELLISLOT UNITY CARD IS UNITY DP Provides monitoring via SNMP Modbus RS485 IP BACnet RS485 IP and HTTP Web protocols INTELLISLOT SITESCAN CARD IS 485EXI Provides monitoring via Liebert SiteScan Web 4 0 Protocol FILTER The optional F5 class following EN779 filters are two deep pleated 60 mm located within the cabinet and accessible from the rear of the unit A filter clog alarm is included as an option ONE 1 EXTRA COMMON ALARM CONTACT Provides the customer with a total of two sets of normally open n
23. e server room If coverage e g Smart Aisle is installed avoid its contemporary contact with both racks and CRV For best performances of Liebert CRV is important to e reduce at minimum recirculation from hot aisle around the ends and or over the top of the racks prevent gaps between the racks e reduce at minimum recirculation from hot aisle through server racks by using blanking panels e ensure cold air is being distributed across the front of all neighboring equipment racks by properly placed Liebert CRV unit s e distribute load within the rack it is generally advised to distribute the load as much possible uniformly across the rack height For more details refer to following details or contact Emerson Network Power Sales Representative Liebert CRV PD 265086 15 05 2014 Application of Liebert CRV 2 4 14 Single Row Placement The Liebert CRV can be placed either at the end of a row or in between server racks Locating a Liebert CRV at the end of a row helps to isolate the end of the cold aisle from the surrounding space protecting it from hot air wrapping around the sides of the aisle The 2T rack temperature sensors sample supply and return air temperatures When deploying multiple Liebert CRV it is recommended that units be installed at the end of rows with their baffles set to direct cold supply air towards the server equipment Fig 2b Depending on row length heat density and airflow requirem
24. emperature up to 46 C MODEL standard noise standard noise standard noise CRO11RA 1x MCS028 1x MCM035 1x MCM040 CRO21RA 1x MCM035 1x MCM040 1x MCL055 The table shows the recommended combinations of the Air cooled Condensers Liebert HCR 50Hz CE mark with the air conditioners Liebert CRV 50Hz CE mark according to the indicated max external air temperature Connecting a too large capacity condenser 5096 higher than the nominal capacity indicated in Tab 7a to the CRV unit can cause malfunctioning and incorrect condenser regulation at low ambient temperature e g in cold season The above indications are approximate and must be checked on the basis of other specific operating conditions For operating conditions other than those indicated in the table refer to the New Hirating calculation software and to the Liebert HCR service manual Liebert CRV PD 265086 15 05 2014 Heat Rejections A version Tab 7d Technical data and performance of air cooled condenser Liebert HCR Total Heat e Refrigerant Power Rejection Air es Input eric ELA connections Model supply THR Volume dB A Power pri A mm Dimensions Weight V Ph Hz R410A m3 h Smif kW A Gasline Liquid line mm kg kW DANT mm mm W 1120 HCR17 230 1 50 17 0 4410 44 5 0 27 1 2 1 2 16 16 D 856 60 H 934 W 1340 HCR24 230 1 50 23 98 8600 50 0 0 55 2 5 2 6 16 16 D 831 60 H 1112 W 1340 HCR33 230 1 50 32 2 7400 50 0 0 55 2 5
25. ents additional cooling units can be installed throughoutthe row with their baffles set to direct supply air left and right Fig 2b Liebert CRV Single Row Placement Cold Supply Air 2 4 2 Two Rows Placement Cooling becomes more effective when there is a barrier or a second row of racks in front of the Liebert CRV unit Also in this case it is recommended to install one Liebert CRV unit at each end of the 2 rows with their baffles directed towards the IT equipment Depending on the row length heat density and airflow requirements additional cooling units can be installed throughout the row with their baffles set to direct supply air left and right Fig 2c Fig 2c Liebert CRV Two Rows Placement Hot Return Air Hot Aisle Hot Return Air Hot Aisle Cooling unit location within a row becomes less critical when deployed in SmartAisle containment but it is recommended that the Liebert CRV be evenly spaced in each row Using room barriers such as walls shown in Fig 2 d and Fig 2 e it can be very effective in simulating aisle containment When the depths of a Liebert CRV and neighboring server rack are not the same it is important to align the front edges of the Liebert CRV with the front edges of the neighboring server racks to allow for proper air distribution Liebert CRV PD 265086 15 05 2014 2 4 Application of Liebert CRV Fig 2d Simulated aisle containment using room barriers sing
26. ersion Tab 7f Technical data and performance of air cooled condenser Liebert MC Premium Total Heat Refrigerant Power Rejection Air Noise input Current connections Model supply THR Volume Level ower Absorp x mm Dimensions Weight V Ph Hz R410A mi BAJE kw ton l Gasline Liquid line mm kg kW 5 m f f A mm mm W 1283 MCS028 230 1 50 32 96 8831 49 8 0 473 0 99 4 3 22 22 D 1180 70 H 955 W 1381 MCM040 400 3 50 41 97 11264 54 0 0 636 1 23 1 5 22 22 D 972 105 H 1269 W 1676 MCLO055 400 3 50 59 55 15451 62 00 0 920 1 72 3 5 28 28 D 1509 156 H 1105 W 2602 MCMOB80 400 3 50 83 94 22528 57 00 1 272 2 46 3 28 28 D1269 200 H 972 W 3102 MCL110 400 3 50 112 30902 65 00 2 11 3 96 7 35 35 D 1509 273 H 1102 W 5045 MCM160 400 3 50 168 45056 60 00 2 54 4 92 6 28 28 D 1269 380 H 972 W 4527 MCL165 400 3 50 179 46353 68 00 3 68 2 76 10 5 35 35 D 1509 404 H 1105 Tab 7g Technical data and performance of air cooled condenser Liebert MC Basic Total Heat Refrigerant Power Rejection Air Noise Input Current F connections Model supply THR Volume CO ower E A mm Dimensions Weight V Ph Hz R410A min BAE mat n IN Gasline Liquid line mm kg kW m f f A mm mm W 1283 weng 220 1 50 29 6 7452 5010 047 1 73 2 30 22 22 oss 70 W 1381 MCMO35 230 1 50 3450 8000 5010 047 um 2 30 22 22 1126 105 W 1381 MCM040 230 1 50 44 78 10600 52 00 0 78 3 75 4 40 22 22 D 972 105 H 1269 W 1676 MCLO55 40
27. he most accurate temperature reading In InRow configuration the temperature sensor monitors the temperature of the air entering the rack equipment The reading is used to control the operation of the unit so the sensor must be placed as directed below or the equipment will not operate properly Insert the rack temperature sensor connector in the temperature sensor port at the iCOM interface Secure the temperature sensor in front of the warmest heat source in the enclosure Do not secure in front of a blanking panel The sensors must be installed where lack of sufficient cooling air is most likely The optimum position of the rack temperature sensors will vary from installation to installation Servers most likely to have insufficient or inadequately cooled cooling air due to the recirculation of hot air from the hot aisle include e Servers positioned at the top of a rack e Servers positioned at any height in the last rack at an open end of a row e Servers positioned behind flow impairing obstacles such as building elements e Servers positioned in a bank of high density racks Servers positioned next to racks with air removal units Servers positioned very far from the equipment e Servers positioned very close to the equipment Liebert CRV PD 265086 15 05 2014 2 6 Liebert CRV 3 1 Standard features Air cooled models DX COOLING COIL The evaporator coil has 0 59m face area 2 or 3 rows deep It is constructed of cop
28. ised floor structure is not able to bear the load of the unit The perforated inlet and outlet panels have 81 open area SERVICE ACCESS All service and maintenance is performed through the front and rear of the unit including any component removal No side access is required All electrical and piping connections are made through the top and or bottom of the unit Liebert CRV PD 265086 15 05 2014 Liebert CRV FILTER The unit is equipped with two air filters rated G2 following EN779 located within the cabinet and accessible from the rear of the unit Air filter F5 are available as option A filter clog alarm is included as an option LOCKING DISCONNECT SWITCH A molded case circuit interrupter disrupts the flow of power to the unit The electric panel high voltage compartment can only be accessed with the switch in the off position It is located behind the back door for a quick access 3 2 Optional features Air cooled models SUPPLY AIR BAFFLE A field adjustable modular supply air baffle is located in the discharge air stream It can be quickly and easily reconfigured to redirect airflow The angles of the vanes have been optimized to effectively distribute air to heat generating equipment in a wide variety of applications DUAL FLOAT CONDENSATE PUMP It has a capacity of 22 7 l min at 9 m head Pump is complete with integral primary and secondary float switches pump motor assembly and reservoir The secondary float shall sen
29. le row Hot Return Air 1 8m Maximum Distance to Barrier Cold Supply Air Fig 2e Simulated aisle containment using room barriers multiple rows Hot Return Air Nw Cold Supply N Hot Return Air 2 5 Liebert CRV PD 265086 15 05 2014 Application of Liebert CRV 2 4 8 Liebert CRV Applied in SmartAisle Cold Aisle Containment Using the Liebert CRV with the SmartAisleTM is always recommended to ensure top efficiency but not required It is an excellent solution when attempting to cool widely varying heat loads ie exceeding 10kW per rack and when seeking the highest efficiency systems Fully containing the cold aisle will allow to automatically balance the Liebert CRV cooling capacity and airflow to the server rack s requirements in real time The 2T rack temperature sensors installed in the sensor boxes of the containment can be used to control the fan speed of the unit in the SmartAisleTM mode Version Without Air Discharge Baffles can be used in SmartAisleTM applications Fig 2f Liebert CRV Placement in SmartAisle Cold Aisle Containment Application Hot Return Air Hot Aisle Rack C Rack Rack Rack Rack R V Cold Supply Air Cold Aisle Containment Hot Return Air Hot Aisle RT 2 5 Temperature sensors The sensor may be placed where desired or left coiled inside the unit It is recommended that the sensor be routed to the front of the heat load for t
30. ngen der Europ ischen Richtlinien gerecht wird Le Fabricant d clare que ce produit est conforme aux directives Europ ennes El Fabricante declara que este producto es conforme a las directivas Europeas O Fabricante declara que este produto est em conformidade com as directivas Europeias Tillverkare f rs krar harmed att denna produkt 6verensstammer med Europeiska Uniones direktiv De Fabrikant verklaart dat dit produkt conform de Europese richtlijnen is Vaimistaja vakuuttaa t ten ett tama tuote tayattaa seuraavien EU direktiivien vaatimukset Produsent erkl rer herved at dette produktet er i samsvar med EU direktiver Fabrikant erkl rer herved at dette produkt opfylder kravene i EU direktiverne O Kataokevaot s Snhovet t TO nap y xpol v siva KATAOKEVAOU VO AVUPOVA ue tig Odnyies TS E E 2006 42 EC 2004 108 EC 2006 95 EC 97 23 EC Ensuring the High Availability Of Mission Critical Data And Applications About Emerson Network Power Emerson Network Power a business of Emerson NYSE EMR delivers software hardware and services that maximize availability capacity and efficiency for data centers healthcare and industrial facilities A trusted industry leader in smart infrastructure technologies Emerson Network Power provides innovative data center infrastructure management solutions that bridge the gap between IT and facility management and deliver efficiency and uncompromised availability regardless of capacity
31. ole 28 Hole 28 Hole 18 Refrigerant Hydraulic and Electrical Connections Fig 9b Electrical board layout 7 Spo gt of oak he GN o i CAL JI CH gt E oo R d yo S i dp 8 8 CH CS OU cm X1 1 E X1 1 8 O Oo o o o o D 0 9 o X1 2 b X1 2 hy d bj o o o o lii N pop op op opop op op op op op 9 P Op op op op op op op op opo J B b olo o ob ob ob ob ob ob ofp o b ob ob ob ob ob cb ofo ob ob ob ol e oo ooo ooo ooojooojooo doo OOo 999 Soo SOO OOo 990 Ooo ooo ooo 990 ooo ooojooo
32. oling of IT electronic equipments which enhance the overall cooling system efficiency In particular cases when a high dehumidification is required for example in combination with High Density cooling Liebert XD system it is suggested to use the Liebert CRV also in combination with Emerson Network Power Floor mount units e g Liebert PDX Liebert PCW or Liebert HPM 2 1 4 Hot Cold aisle configuration A best practice is to use rows of equipment racks in an alternating arrangement of cold aisles and hot aisles In the cold aisle the equipment racks are arranged face to face so the cold air discharged from the Liebert CRV unit s is drawn into the front of the servers and exhausted out through the rear into the hot aisles Hot aisles are literally hot because the objective of the alternating cold and hot aisle design is to separate the source of cooling air from hot air discharge which returns to the Liebert CRV unit s Therefore hot and cold aisle should be separated otherwise there would be a mix of hot and cold air and thereby lower the temperature of the air returning to the CRV units which reduces their usable capacity Cold aisle Hot aisle Hot aisle Cold aisle x Fig 2a Example of high density installation with cold aisle and hot aisle alternation Liebert CRV PD 265086 15 05 2014 Application of Liebert CRV 2 1 2 Combination with other Cooling systems Liebert CRV may be combined with o
33. ooding alarm liquistat The flooding alarm detects the presence of water and activate an alarm The sensor is connect across terminals 105 amp 106 and up to 5 sensors can be connected to the same flooding alarm device to control many points in the bottom of the unit Liebert CRV PD 265086 15 05 2014 9 3 Refrigeration amp Hydraulic Circuits Fig 10a Liebert CRO11RA CRO21RA eS V V X X Q to disconnect for bottom connections EXTERNAL TO CRV UNIT POS DESCRIPTION POS DESCRIPTION 1 Compressor 12 Shut off valve 2 Crankcase heater 13 Evaporating coil 3 High pressure switch HP 14 Low pressure transducer 4 Air cooled condenser 15 Access valve 1 4 5 Liquid receiver 16 Shut off solenoid valve 6 Access valve 5 16 17 High pressure transducer 7 Safety relief valve 18 Vibration absorber 8 Filter dryer 19 Cup and fitting sweat joint 9 Sight glass 20 Temperature sensor for EEV 10 Electronic expansion valve EEV 21 Liquid Temperature sensor 11 Check valve 10 1 Liebert CRV PD 265086 15 05 2014 I Fabbricante dichiara che questo prodotto conforme alle direttive Europee The Manufacturer hereby declares that this product conforms to the European Union directives Der Hersteller erklart hiermit dass dieses Produkt den Anforderu
34. ore units so if any of the unit s fail the remaining unit s will cover the heat load Always consider the layout of the room when defining number of units see chapter 2 4 Positioning unit placement 2 2 2 Air Flow Requirements Liebert CRV is optimized to provide precision cooling for IT equipment with temperature raise delta T of cooling air passing through the equipment around 15 to 20 degrees Celsius or higher Such temperature raise is typical for Blade servers and standard pizza servers For applications with very low delta T around 10 degrees Celsius typical for old fashion servers it is necessary to de rate cooling capacity of the Liebert CRV due to higher air flow equipment In case of application with Cold Aisle Containment Smart Aisle it is necessary to carefully investigate the air flow through IT equipment and to define number of Liebert CRV units in order to provide at least 5 more airflow excluding redundant unit s Otherwise there may occur a situation with negative pressure in the Smart Aisle containment and hot air possibly leaking inside the containment 2 3 Operating limits The units are designed to operate within working ranges These limits are referred to new machines or to those that have been correctly installed and serviced The warranty clauses are no longer valid for any possible damage or malfunction that may occur during or due to operation outside the application values 2 34 For all units
35. per tubes and hydrophilic coated aluminium fins The hydrophilic coating provides superior water carryover resistance A stainless steel condensate drain pans are provided REFRIGERATION SYSTEM Single refrigeration circuit includes a liquid line filter drier a refrigerant sight glass with moisture indicator an electronic expansion valve and a liquid line solenoid valve COMPRESSOR The compressor is an R410A DC inverter scroll type with variable capacity operation from 30 10096 The compressor has a suction gas cooled motor vibration isolators internal thermal overloads manual reset high pressure switch low pressure and high pressure transducer crankcase heater internal centrifugal oil pump and an operating speed of 3000RPM Q2 50Hz ELECTRONIC EXPANSION VALVE DEVICE EXV The valve is designed for modulating control of refrigerant circuits with high speed and high precision It is suitable for use as expansion device in refrigerant circuits with DC Inverter Scroll compressor with organic safety refrigerants i e R410A For variable capacity systems an EXV provides superior performance as compared to a traditional thermostatic expansion valve TXV due to e Precise flow control e Positioning time Electronic expansion valve ensure a better control on superheating at the outlet of the evaporator ensuring at same that compressor will never be filled by liquid Moreover the EXV v alve let the condensing temperature goes down to 33 C
36. stepless fan speed controller The electrical board is designed to allow a local or remote switch from high to low fan speed set point and viceversa by means of terminal contact 70 71 The entire units have IP54 type of protection Motorized fans are IP54 DIN60529 protection class F Maintenance free ball bearings Most important technical data are gathered in Tab 7b Heat rejection capacity have been measured according to the norm EN327 Sound power level have been measured according to the norm UNI EN ISO 3741 2001 Sound pressure level have been evaluated according to the norm EN13487 at 5m distance with free field conditions Max working pressure is 43 barg Liebert CRV PD 265086 15 05 2014 Fig 8a Overall dimensions service area FRONT VIEW Liebert CRV PD 265086 15 05 2014 HOT AIR we str Installation drawings REAR VIEW 300 300 300 Rear access diagram Front access diagram o oof m REAR VIEW TOP VIEW with display 300 300 300 FRONT VIEW Installation drawings Access required to install the unit between existing racks within the row only Front or Rear clearance required Tab 8a Overall dimensions Models Height Depth mm mm CR11RA 2000 1100 CR21RA 2000 1100
37. ther cooling systems such as underflow CRAC units e g retrofit of current installation until there is proper setting of both systems without influencing each other Otherwise there is a risk of cycling or increased power consumption of both systems in worst case causing malfunction of the units For details contact Emerson Network Power sales representative 2 2 Selection of Liebert CRV unit s 2 2 14 Number and size When designing a cooling solution using the Liebert CRV unit s the initial steps are similar to those required to cool a conventional critical space The total heat load must be calculated including sensible and latent cooling requirements These should be increased by the reserve capacity needed for pull down situations e g after power failure where the room temperature must be reduced and to cover unexpected increases in the heat load Consider also redundant capacity which is usually not in use in the normal operation but takes duty if any of the running unit s fail So the different steps are e Check the heat load of IT equipment and apply safety margin if required e Define size and number of Liebert CRV units in order to provide enough net sensible cooling capacity to cover the heat load Typical air inlet temperatures to be considered for normal operation of the unit s are between 33 C and 37 C Please refer also to point 2 2 3 Air Flow Requirements e When N X typical N 1 redundancy is required use m
38. timized to ensure maximum cooling capacity in a minimal footprint The extremely energy efficient components of the system are managed by the Liebert iCOM Control system The control monitors the environment in real time by locating sensors on the inlet of the racks that the unit is cooling This information allows the unit to optimize its operations in terms of performance and energy efficiency Service and maintenance are performed through the front and rear of the unit including all component replacement All piping and electrical connections are made through the top or bottom of the unit Liebert CRV PD 265086 15 05 2014 1 1 Application of Liebert CRV 2 1 First check Before proceeding with Liebert CRV application please make sure the unit selected is suitable for your site Liebert CRV is targeted for small and medium data centers and it is optimized for maximum cooling capacity in a minimal footprint It is designed for high air inlet temperature up to 40 C therefore it is advised to accomplish Hot Cold aisle configuration Liebert CRV is able to modulate the cooling capacity in order to quick adjust to any changing heat load Liebert CRV is designed to provide proper control of the room temperature humidity and air filtration The specific design of Liebert CRV is optimized in order to be extremely efficient without providing unnecessary latent cooling dehumidification not specifically required for co
39. while TXV works well with a condensing pressure as much as possible constant For such reason with TXV the condensing temperature is kept around 45 C as set point But during the coldest period the condensing temperature can be lowered and the electronic expansion valve adapts to this new situation This permits an increased cooling capacity of the unit a decreased power input of the unit and so a better efficiency of the entire Liebert CRV unit FAN The unit is equipped with five CRO21 or three CRO1 1 direct driven radial fans with backward curved blades and Electronically Commutated DC motors commonly referred to as EC plug fans The fan speed is variable and automatically regulated by the iCOM control through all modes of operation Each fan has a dedicated motor which provides a level of redundancy The fans pull air through the coil and are located on the front side of the unit iCOM CONTROL SYSTEM The Liebert CRV is controlled by the iCOM Control System The standard user interface is the Large Graphical Display 320x240 pixels backlit which presents system information and allows all parameters to be viewed and adjusted It features push button navigation operational status LEDs and a 3 level password protection system iCOM without display is available as option Unit without display can be controlled through a display of another unit in the same group or through a service display Unit to Unit communication with other Liebert CR
40. x 240 pixels e Self explanatory icons are used for the menu layout of the CDL Display e Status Report of the latest 400 event messages of the unit system e Graphic Data Records for temperature and humidity selectable timeframes from 8 minutes to 2 weeks e Semi or Full Manual Mode software management including all safety devices e 4 Level Password system to protect all settings e Ergonomic design for use also as portable device start up and flying connections by service personnel Technical Data CDL Graphic Display Microcontroller Coldfire 32Mbit Ethernet network connectors 2 RJ45 sockets for unit in LAN remote display CAN bus connectors 2 RJ12 sockets Powersupply ssesessss via CAN bus or external 12Vdc supply 5 3 iCOM without Display option e 3 color LED light status e switch for local ON OFF CRV units without display can be controlled by a service display or through LCD of another CRV unit in the same network group The service dipslay must connected on the rear side of the unit There are two cables supply and Ethernet available inside the compressor chilled water valve compartmentfor connection of the service display All parameters can be managed through this display same as from iCOM display Liebert CRV PD 265086 15 05 2014 6 1 Tab 6a Air cooled 40 C DB 20 RH Net Total kW Net Sensible kW
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