Airwell AWAU-YBDE009-H11 Bedienungsanleitung

2013Catalogue

10Flexy MatchUnique solutions

100DK DN 205-255-305-405 TECHNICAL DATAIndoor units DK 205 DK 255 DK 305 DK 405Outdoor unitsCool only DN 205 DN 255 DN 305 DN 405Reversible DN 205RC D

101DK DN 505-605-755-905 TECHNICAL DATAIndoor units DK 505 DK 605 DK 755 DK 905Outdoor unitsCool only DN 505 DN 605 DN 755 DN 905Reversible DN 505RC D

102X ARVERTICAL AIR CABINETCOOLING ONLYLight CACPRODUCT ADVANTAGES Easy installation and maintenance. Split system with outdoor condenser fan unit.

103AIRWELL SOLUTIONSX AR TECHNICAL DATAIndoor units X 1100 AR X 1900 AR X 2450 AR X 3250 AR X 4650 AR X 6450 AROutdoor units UC 33 A UC 53 A UC 73 A U

104X AOVERTICAL WATER CABINETCOOLING ONLYLight CACPRODUCT ADVANTAGES Easy installation and maintenance. Monobloc system. Public or recycled water o

105AIRWELL SOLUTIONSX AO TECHNICAL DATAX AO Model CX 25 X 1100 AO X 1900 AO X 2450 AO X 3250 AO X 4650 AOPRODUCT CODES230V/1P/50 Hz Code 7XU012032 - -

106HANROOFTOP UNITCOOLING AND HEATING MODELight CACPRODUCT ADVANTAGES Weather resistant casing with external panels and drain pan coated with powder-

107AIRWELL SOLUTIONSHAN TECHNICAL DATAHAN Model HAN 13 HAN 15 HAN 17 HAN 19 HAN 25 HAN 31PRODUCT CODESStandard Code 7HL023002 7HL023003 7HL023004 7HL0

108Mini FlowLogic II Range[ MODEL NAME ]CAPACITY (HP) 7 9 12 16 18 24 28 30 38 48Cooling (kW) 2.2 2.8 3.6 4.5 5.6 7.1 8 9 11.2 14PageHeating (kW) 2.2

109[ MODEL NAME ]CAPACITY (HP) 7 9 12 16 18 24 28 30 38 48Cooling (kW) 2.2 2.8 3.6 4.5 5.6 7.1 8 9 11.2 14PageHeating (kW) 2.2 2.8 3.6 4.5 5.6 7.1 8 9

11Flexy MatchFLEXYMATCHq Same unit same logic for all application - Easy Service - Easy Logistic - Easy to upgradeq All in one> Minimum stock&g

110FlowLogic II, a high performance system for all those involved in the projectFlowLogic II is a range of variable refrigerant flow solutions for hea

111CASSETTE CBV 600 X 600FLOOR CEILING FAVCASSETTE CCV 900 X 900CONSOLE EAVDUCTED DBVHIGH WALL HAV DUCTED DAV FRESH AIR HRV (HEAT RECOVERY)OPTIMAL ENE

112PRODUCT ADVANTAGES COP can reach 4.1 Up to 9 units can be connected Single phase electrics Compact (0.32 m2 footprint) Minimum outdoor tempera

113PRECISE CONTROL180 DEGREE VECTOR CONTROL TECHNOLOGYPID CONTROLPID control adjusts the output of compressor and the open degree of EEV, balances the

114OPERATION RANGEMini FlowLogic II series permits a system design considering a heating range opera-tion under a low temperature condition from -15°C

115MINI FLOWLOGIC II TECHNICAL DATAOutdoor unit YCV 180Code 7SP14H009CAPACITYCoolingkBtu/H 61.4kW 18HeatingkBtu/H 68.2kW 20ELECTRICAL PARAMETERSPower

116RCV01(STD)Dimensions: 007-009-012 modelsDimensions: 018 modelHAVHIGH WALLHAV TECHNICAL DATAAIRWELL SOLUTIONSq EEV inside put: The EEV box inside p

117Dimensions: 009-012-016 modelsRCV01(optional)RWV01RWV03(optional)CBVCASSETTE 600x600CBV TECHNICAL DATAAIRWELL SOLUTIONSq New particular designq Q

118Dimensions: 024-030-048 modelsRCV01(optional)RWV01RWV03(optional)CCVCASSETTE 900x900CCV TECHNICAL DATAAIRWELL SOLUTIONSq Compact designq Advance

119Dimensions: 012-024 modelsRCV01(optional)RWV01RWV03(optional)FAVFLOOR & CEILINGFAV TECHNICAL DATAAIRWELL SOLUTIONSq Ultra-thin unit body, only

12AdvancedcontrolUnique solutions

120Dimensions: 009 modelDAVDUCTED LOW STATIC PRESSUREDAV TECHNICAL DATAAIRWELL SOLUTIONSq 220 ultra thin design and space savingq Elegant outlook fi

121Dimensions: 018-028 modelsDBVDUCTED MEDIUM STATIC PRESSUREDBV TECHNICAL DATAAIRWELL SOLUTIONSq Flexible static pressure selection, meet the custom

122Mini FlowLogic IIIndoor unitRCV01(STD)Dimensions: 012 modelEAVCONSOLEEAV TECHNICAL DATAAIRWELL SOLUTIONSq High efficiency filterq Quiet runningq

123HRVFRESH AIR (HEAT RECOVERY)HRV TECHNICAL DATAAIRWELL SOLUTIONSq Two levels of air volume capacity 800 and 1000 m3/hq Three operation modes : Auto

124[ NAME ] Photo Code Model [ FONCTION ] [ FOR WHAT UNITS? ] [ OPTIONAL/COMMENTS ]INFRARED CONTROLLER 7ACELH001rCv01Unit operatingWall mountedConsole

125[ NAME ] Photo Code Model [ FONCTION ] [ FOR WHAT UNITS? ] [ OPTIONAL/COMMENTS ]INFRARED CONTROLLER 7ACELH001rCv01Unit operatingWall mountedConsole

126Drop height between indoor and outdoor unitsFirst branch pipingOutdoor unitfagbhcideIndoor unitLength of the longest piping L ≤ 70mLength of the lo

127EXAMPLE OF “PRINT SCREEN” FROM OUR SELECTION SOFTWARE PROGRAMDEFINITION OF THE ROOMSINDOOR UNIT SELECTION

128OUTDOOR UNIT SELECTION

129REFRIGERANT DIAGRAM PIPINGCABLE WIRING DIAGRAM

13Advanced control optionsADVANCEDCONTROL OPTIONSEasy installation and Service care q Tubing length up to 70mq Operating range, Heating -15°C, Cool

130

131

1BIS, AVENUE DU 8 MAI 1945 - 78280 GUYANCOURT, FRANCE TÉL. : +33 (0) 1 39 44 78 00 - FAX : +33 (0) 1 39 44 64 99 www.airwell-residential.com RAC GB 20

14SERVICE CAREModel Connect to Advantage / FeatureM2L IDU Monitoring and recording all system parameters.HMIMOSTOF ODU• Self installation test.• Sel

15ACCESSORY OPTIONSDesign Model FunctionREMOTE CONTROLSRC7/8 Wireless remote control.RCL Simple wired remote control (Option).RCW Wired RC Up to 32 ID

Unique solutions16Sterionizer™• Safety design, certified in Japan & USA• Performance and efficiency proof tested

17Sterionizer™q Kill bacteria and reduce allergies effect.q Generate natural environments free of virus.q Tested and certified in Japan.q Auto-self

18Airwell Residential Service We Airwell Residential have issued this Service Charter to demonstrate our commitment to providing our customers-focus

19We are continually improving our service: last actions areq New trained and multi language call center. [ www.airwell-residential.com/aftersales ]

2Contact UsAn international sales network[ COMMERCIAL ]E-mail: [email protected]: +33 (0)1 39 44 78 00Aftersales:[ AIRWELL HEADQUARTER ]

20HistoryServing inner well-being for over 60 yearsIt all began in 1947, when Paul Wallet developed and launched the very first air-conditioning syste

21[ REGULAR INNOVATION BRINGING EVEN MORE COMFORT ]A constant focus on developing and innovating on its initial know-how boosted Airwell’s internation

22Icon GuideSTERIONIZERGenerating sterionizer ions that leads to electrochemical reaction that deactivates bacteria, viruses and allergenic particles.

23AUTO FANAdjust the air volumeaccording to the gapbetween set to room temperature.8°C CONSTANT TEMPERATURE HEATINGKeep 8°C room temperature to prote

24[ MODEL NAME ] Page92.5 kW123.5 kW185 kW247 kW308 kW3610 kW45-4812.5-14 kW6016-18 KWDC InverterHIGH WALLMONO & PREMIUM MULTIFLEXYMATCHHJD 26201

25[ MODEL NAME ] Page92.5 kW123.5 kW185 kW247 kW308 kW3610 kW45-4812.5-14 kW6016-18 KWDC InverterHIGH WALLMONO & PREMIUM MULTIFLEXYMATCHHJD 26201

26Monosplit DCIPRODUCT ADVANTAGES Multi layer air purification combine anti virus by sterionizer system and electrostatic filter for small particules

27AIRWELL SOLUTIONSHJD TECHNICAL DATAIndoor unitsAWSI-HJD009-N11AWSI-HJD012-N11AWSI-HJD018-N11AWSI-HJD024-N11AWSI-HJD030-N11Outdoor unitsAWAU-YBDE009-

28HGDEHIGH WALL MONOMonosplit DCIPRODUCT ADVANTAGES Super quiet 22 dB(A) (7 motor speed). Ultra compact design. Depth: 159 mm. Self diagnostic b

29AIRWELL SOLUTIONSHGDE TECHNICAL DATAIndoor units AWSI-HGDE009-N11 AWSI-HGDE012-N11Outdoor units AWAU-YGDE009-H11 AWAU-YGDE012-H11COOLINGRated Capaci

3EditorialJust feel wellA promise backed up by concrete commitmentsMore than just a promise, a state of mindJust feel well is the guiding principle fo

30HDDEHIGH WALL MONOMonosplit DCIPRODUCT ADVANTAGES A/A Class Efficiency. Minimum energy consumption. Automatic self clean and internal system dryin

31Indoor units AWSI-HDDE009-N11 AWSI-HDDE012-N11 AWSI-HDDE018-N11 AWSI-HDDE024-N11Outdoor units AWAU-YDDE009-H11 AWAU-YDDE012-H11 AWAU-YDDE018-H11 AWA

32Acc. Ref. Photo DescriptionAdditional accessory requiredFunctionRCW2 7ACEL1212 Wired group control.- Control up to 32 Indoor unit as a group or indi

33Indoor units AWSI-SXE009-N11 AWSI-SXE012-N11 AWSI-SXE018-N11Outdoor units AWAU-YBDE009-H11 AWAU-YBDE012-H11 AWAU-YBDE018-H11COOLINGRated Capacity k

34FWDEFLOOR CEILING MONOMonosplit DCIPRODUCT ADVANTAGES Dedicated design for wine cellars. Cooling operation up to -10ºC outside and go down up to 12

35Indoor units AWSI-FWDE012-N11 AWSI-FWDE018-N11 AWSI-FWDE024-N11Outdoor units AWAU-YBDE012-H11 AWAU-YBDE018-H11 AWAU-YBDE024-H11COOLINGCapacity kW

36FADEFLOOR CEILING MONOMonosplit DCIPRODUCT ADVANTAGES Wired and wireless remote controls provided as standard. Self diagnostic (error indications)

37AIRWELL SOLUTIONSFADE TECHNICAL DATAIndoor units AWSI-FADE024-N11 AWSI-FADE030-N11 AWSI-FADE036-N11 AWSI-FAD048-N11Outdoor units 1~230V - 50 Hz AWAU

38Acc. Ref. Photo DescriptionAdditional accessory requiredFunctionRCW2 7ACEL1212 Wired group control.- Control up to 32 Indoor unit as a group or ind

39Indoor units AWSI-CNE009-N11 AWSI-CNE012-N11 AWSI-CNE018-N11 AWSI-CNE024-N11Outdoor units AWAU-YBDE009-H11 AWAU-YBDE012-H11 AWAU-YBDE018-H11 AWAU-YB

4Table of contentsPAGEOUR UNIQUE SOLUTIONS7AIRWELL RESIDENTIAL SERVICE18HISTORY20ICON GUIDE22 DCI & FIXED SPEED RANGE24HJDHigh wall mono & pre

40CADECASSETTE 900x900 MONOMonosplit DCIACCESSORIES/OPTIONSq Cassette line available in capacities from 7 to 16 kW.q Cooling & heating operation

41AIRWELL SOLUTIONSCADE TECHNICAL DATAIndoor unitsAWSI-CADE024-N11AWSI-CADE030-N11AWSI-CADE036-N11AWSI-CAD048-N11AWSI-CAD060-N11Outdoor units 1~230V -

DLFUnique solutions42[ BEFORE ]

43COMPREHENSIVE STRUCTURE DESIGNA Drain panB CoilC DC motorD Water pump + water levelE FanF ControllerG Air lterq Vertical installation with Compac

44Acc. Ref. Photo DescriptionAdditional accessory requiredFunctionRCW2 7ACEL1212 Wired group control.- Control up to 32 Indoor unit as a group or ind

45Indoor units AWSI-DLF009-N11 AWSI-DLF012-N11 AWSI-DLF018-N11 AWSI-DLF024-N11Outdoor unitsAWAU-YBDE009-H11AWAU-YBDE012-H11AWAU-YBDE018-H11AWAU-YBDE02

Unique solutions46DLS Plus VAV

4723°18°24°20°22°

48VAVProduct rangeq Flexy Match DLS ducted 5/7/8/10/12KW.q Most advanced ducted unique line with comprehensive horizontal fan design.q Two options of

49ROUND TYPE ACCESSORIESPart Description Product CodeMain Controller VAV Kit 7ACEL1641Motorized Round Damper (D=150mm) Kit 7ACEL1648Motorized Round D

5Table of contentsPAGEFIXED SPEED RANGE70HHFHigh wall 72FAFFloor ceiling 74FSFFloor standing 76CAFCassette 600x600 78CAFCassette 900x900 80DAFDucted

50Acc. Reference Photo DescriptionAdditional accessory requiredFunctionRCW2 7ACEL1212 Wired group control.- Control up to 32 Indoor unit as a group or

51Indoor unitsDLS 18 DCI R410A AWDLS 24 DCI R410A AWDLS 30 DCI R410A AWDLS 36 DCI R410 AW DLS 43 DCI R410 AWOutdoor unitsAWAU-YBDE018-H11AWAU-YBDE024-

52Monosplit DCIACCESSORIES/OPTIONSAcc. Reference Photo DescriptionAdditional accessory requiredFunctionRCW-4 7ACEL1613 Wired group control. - Contro

53AIRWELL SOLUTIONSDBDE TECHNICAL DATAIndoor unitsAWSI-DBDE024-N11AWSI-DBDE030-N11AWSI-DBDE036-N11AWSI-DBD048-N11AWSI- DBD060-N11Outdoor units 1~230V

54YX1FAELIANEPORTABLEMonosplit Fixed SpeedAELIANE TECHNICAL DATAAIRWELL SOLUTIONSq Portable line available in capacities from 2.64 and 3.5 kW.q Coo

55

56 Multi DCI RangeCombination Table[ MODEL NAME ]KW BTU/HMax. Num. of Indoors Page[ CLASSIC INDOORS UNITS ]High Wall HJDFLEXYMATCHFloor Ceiling SXE

57[ MODEL NAME ]KW BTU/HMax. Num. of Indoors Page[ CLASSIC INDOORS UNITS ]High Wall HJDFLEXYMATCHFloor Ceiling SXEFLEXYMATCHCassette CNEFLEXYMATCHD

58YAZEPREMIUM MULTI DUO/TRIO/QUATTRO/CINCOMultisplit DCIPRODUCT ADVANTAGES Flexy match with wide range of indoor unit including HJD, SXE, CNE, DLS, D

59Outdoor unitsAWAU-YAZE218-H11AWAU-YAZE318-H11AWAU-YAZE324-H11AWAU-YAZE430-H11AWAU-YAZE536-H11COOLINGRated Capacity kW 5 (1.2-6.4) 5.20 (1.0-6.6)

6New regulation ofDirective 2009/125/ECThe New regulation have been initiated by the European Parliament as part of the long term plan to reduce the

60Mandatory to connect all IDUIndoor unitscombinationsCOOLING HEATINGCapacity (kW) Power input (kW)SEERCapacity (kW) Power input (kW)SCOPA B C D Total

61Mandatory to connect all IDU Indoor unitscombinationsCOOLING HEATINGCapacity (kW) Power input (kW)SEERCapacity (kW) Power input (kW)SCOPA B C D Tota

62Mandatory to connect all IDU Indoor unitscombinationsCOOLING HEATINGCapacity (kW) Power input (kW)SEERCapacity (kW) Power input (kW)SCOPA B C D Tota

63Mandatory to connect all IDU Indoor unitscombinationsCOOLING HEATINGCapacity (kW) Power input (kW)SEERCapacity (kW) Power input (kW)SCOPA B C D Tota

649 2.5 - - - - 2.5 1.50 3.5 0.76 0.40 1.01 3.29 3.4 - - - - 3.4 0.95 5.2 0.69 0.40 0.86 4.9612 3.5 - - - - 3.5 1.50 4.2 1.03 0.40 1.29 3.40 4.3 - - -

65

66YBZEHIGH WALL RESIDENTIAL MULTI DUO/TRIO/QUATTROMultisplit DCIPRODUCT ADVANTAGES A/A Class Efficiency. Minimum energy consumption. Rapid operatio

67Outdoor unit AWAU-YBZE218-H11 AWAU-YBZE324-H11 AWAU-YBZE430-H11COOLINGRated Capacity kW 5.0 (2.05-6.2) 7.1 (2.2-10) 8.0 (2.2-10.0)Pdesignc kW 5.0 7

68YBZE3-24RESIDENTIAL MULTI TRIOIndoor unitscombinationsCOOLING HEATINGCapacity (kW) Power input (kW)SEERCapacity (kW) Power input (kW)SCOPA B C DNomi

69YBZE4-30RESIDENTIAL MULTI QUATTROIndoor unitscombinationsCOOLING HEATINGCapacity (kW) Power input (kW)SEERCapacity (kW) Power input (kW)SCOPA B C DN

7Our unique solutionsunique technologiesunique applications

70[ MODEL NAME ] Page72 kW92.5 kW123.5 kW185 kW247 kW308 kW3610 kW4512.5 kW6014 kW68-13620-39.5 kWHIGH WALLHHF72FLOOR CEILINGFAF74FLOOR STANDING FSF76

71[ MODEL NAME ] Page72 kW92.5 kW123.5 kW185 kW247 kW308 kW3610 kW4512.5 kW6014 kW68-13620-39.5 kWHIGH WALLHHF72FLOOR CEILINGFAF74FLOOR STANDING FSF76

72HHFHIGH WALLFixed SpeedPRODUCT ADVANTAGES Wide angle air distribution for excellent comfort. Self diagnostic by digital failure code indication.

73Indoor unitsAWSI-HHF007-N11AWSI-HHF009-N11AWSI-HHF012-N11AWSI-HHF018-N11AWSI-HHF024-N11Outdoor unitsAWAU-YGF007-H11AWAU-YGF009-H11AWAU-YGF012-H11AWA

74FAFFLOOR CEILINGFixed SpeedPRODUCT ADVANTAGES Wired and wireless remote controls provided as standard. Self diagnostic (error indications) in remo

75AIRWELL SOLUTIONSFAF TECHNICAL DATAIndoor unitsAWSI-FAF012-N11AWSI-FAF018-N11AWSI-FAF024-N11AWSI-FAF030-N11AWSI-FAF036-N11AWSI-FAF042-N11AWSI-FAF060

76FSFFLOOR STANDINGFixed Speedq Floor standing available in 12.4 kW capacity.q Cooling & Heating mode.q “I feel” function with precise room tem

77AIRWELL SOLUTIONSFSF TECHNICAL DATAIndoor unit AWSI-FSF045-N13Outdoor unit AWAU-YFF045-H13COOLINGCapacity kW 12.4Input power kW 4.94EER/Energy Lab

78CAFCASSETTE 600x600Fixed SpeedPRODUCT ADVANTAGES Wired and wireless remote controls provided as standard. Self diagnostic (error indications) for

79AIRWELL SOLUTIONSCAF TECHNICAL DATAIndoor units AWSI-CAF012-N11 AWSI-CAF018-N11Outdoor units AWAU-YIF012-H11 AWAU-YIF018-H11COOLINGCapacity kW 3.50

Unique Flexy MatchHIGH LIGHTSq Same unit same logic for all application Easy Service Easy Logistic Easy to upgradeq All in oneUni

80CAFCASSETTE 900x900Fixed SpeedPRODUCT ADVANTAGES Wired and wireless remote controls provided as standard. Self diagnostic (error indications) for

81AIRWELL SOLUTIONSCAF TECHNICAL DATAIndoor units AWSI-CAF024-N11 AWSI-CAF030-N11 AWSI-CAF036-N11 AWSI-CAF042-N11Outdoor units 1~230V - 50 Hz AWAU-YIF

82DAFDUCTED 9-12-18Fixed SpeedPRODUCT ADVANTAGES Wired and wireless remote controls provided as standard. Self diagnostic (error indications) in rem

83AIRWELL SOLUTIONSDAF TECHNICAL DATAIndoor units AWSI-DAF009-N11 AWSI-DAF012-N11 AWSI-DAF018-N11Outdoor units 1~230V - 50 Hz AWAU-YIF009-H11 AWAU-YIF

84DAFDUCTED 24 TO 60Fixed SpeedPRODUCT ADVANTAGES Wired and wireless remote controls provided as standard. Self diagnostic (error indications) in re

85AIRWELL SOLUTIONSDAF TECHNICAL DATAIndoor unitsAWSI-DAF024-N11AWSI-DAF030-N11AWSI-DAF036-N11AWSI-DAF042-N11AWSI-DAF060-N11Outdoor units 1~230V - 50

86DAFDUCTED 68 TO 136Fixed SpeedPRODUCT ADVANTAGES Wired and wireless remote controls provided as standard. Self diagnostic (error indications) in r

87AIRWELL SOLUTIONSDAF TECHNICAL DATAIndoor units AWSI-DAF068-N13 AWSI-DAF085-N13 AWSI-DAF102-N13 AWSI-DAF136-N13Outdoor units 3~400V - 50 Hz AWAU-YIF

Unique solutions88CAO/GCAOwater condensingsolution

89[ HHF LINE ][ CAF LINE ][ CAO LINE ][ SPLIT SOLUTION ] [ PACKAGE SOLUTION ]Easy and simple installationFeaturesq Ideal for building with local rest

23°18°24°20°22°HIGH LIGHTSq Advanced fuzzy logic by controling the inverter and room temperature per zoneq Cost & energy savingq The best added

90CAOWATER CONSOLEFixed SpeedPRODUCT ADVANTAGES Ideal indoor solution when the building structure or aesthetic reasons forbid a condensing outdoor un

91AIRWELL SOLUTIONSCAO TECHNICAL DATAIndoor units CAO 230 CAO 370 CAO 580COOLINGCapacity kW 2.3 3 4.7Power input kW 0.66 0.85 1.3EER/Energy Label 3.

92GCAOWATER SOURCEPRODUCT ADVANTAGES Water flow protection by presostat valve. High pressure switch with manual reset. Super quiet. Connection to

93Outdoor units GCAO 9N GCAO 12N GCAO 18N GCAO 24NCOOLINGCapacity kW 2.85 3.65 5.85 7.15Input power kW 0.68 0.94 1.34 1.90EER/Energy Label 4.19/A 3

94YX1FWCFWINDOWMonosplit Fixed SpeedWCF TECHNICAL DATAAIRWELL SOLUTIONSq Window line available in capacities from 2.5 and 3.5 kW.q Cooling operatio

95

96[ MODEL NAME ] Page307.8 kW4512.5 kW4814 kW6017 kW 19 kW 25 kW 30 kW 40 kW 45 kW 55 kW 70 kW 85 kWMOnOSpLItAIR TO AIR SPLIT SYSTEMDK Dn98vertICAL CA

97[ MODEL NAME ] Page307.8 kW4512.5 kW4814 kW6017 kW 19 kW 25 kW 30 kW 40 kW 45 kW 55 kW 70 kW 85 kWMOnOSpLItAIR TO AIR SPLIT SYSTEMDK Dn98vertICAL CA

98DK DNAIR TO AIR SPLIT SYSTEMCOOLING AND HEATING MODELight CACPRODUCT ADVANTAGES Weather resistant casing with external panels coated with powder-ba

99AIRWELL SOLUTIONSDK DN 125-155-185 TECHNICAL DATAIndoor units DK-V 125 DK 155 DK 185Outdoor unitsCool only DN 125 DN 155 DN 185Reversible DN 125RC D