Toshiba RBM-A101UPVA-E Manual Download Page 1

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VRF DX COIL INTERFACE

MODEL NAME

Dx-coil controller

TCB-IFDMX01UP-E

(Terminal block without relay)

TCB-IFDMR01UP-E

(Terminal block with relay)

Dx-valve kit

RBM-A101UPVA-E

RBM-A201UPVA-E

Design Guideline

DG003-03

Summary of Contents for RBM-A101UPVA-E

Page 1: ... DX COIL INTERFACE MODEL NAME Dx coil controller TCB IFDMX01UP E Terminal block without relay TCB IFDMR01UP E Terminal block with relay Dx valve kit RBM A101UPVA E RBM A201UPVA E Design Guideline DG003 03 ...

Page 2: ...ct DX COIL Design Guideline 22 7 5 DX COIL Guideline HP 23 7 6 DX COIL Guideline CO Pattern A 27 7 7 DX COIL Guideline CO Pattern B 31 7 8 DX COIL Guideline TF 35 7 9 DX COIL Manufacturing 37 7 10 DX Controller Installation 37 7 11 Sensor Connections 38 7 12 Dx valve KIT Installation 39 8 Control Outline 8 1 Cautions regard with DDC s programing 41 8 2 Protection Function Summary 42 9 Cable specif...

Page 3: ...of Toshiba Outdoor units connected to a DX COIL with a field supplied AHU It is compatible with either a Toshiba VRF system Settings for each type TA TF DDC Set with the SW501 switch on the control P C board MCC 1777 TA Type SW501 all Bit OFF TF Type SW501 Bit2 ON DDC Type 0 10V Stepped Control SW501 Bit3 ON DDC type 0 10V Linear Control SW501 Bit3 Bit４ ON Product Model name Capacity HP RBM A101UP...

Page 4: ...el MMY MAP 6HT8 P MMY MAP 6HT7 P SMMS e Cooling Only Model MMY MAP 6T8 P MMY MAP 6T7 P SHRM e MMY MAP 6FT8 P MMY MAP 6FT7 P 8 HP 10 HP only TA type Diversity 60 110 Overview For example schematic of system DDC type １１ only Diversity 75 100 Overview For example schematic of system Type SMMS u SMMS SMMS 7 SMMS e SHRM e communication TA type DDC type TF type TU2C LINK or TCC LINK TCC LINK 60 110 75 ...

Page 5: ...the specification the damage for the system may be caused Outdoor unit Refer to specification of outdoor unit 15 24 C WB 15 32 C WB Outdoor unit model or select cooling only mode with HP model Outdoor Suction air temp 46 52 C DB is also available but Temporaty operatable TF or DDC TA or DDC Control HP TA Heating Cooling Cooling Only Pattern A Pattern B HP TF Heating Cooling 18 43 C DB Heating mode...

Page 6: ...nd Dx coil is up to 5 m 28 34 36 42 Ø 38 1 Ø 22 2 76 92 Ø 54 0 94 Ø 25 4 44 52 54 Ø 41 3 56 60 62 74 Ø 44 5 8 Ø 19 1 Ø 12 7 10 Ø 22 2 12 Ø 28 6 14 18 Ø 15 9 20 22 Ø 19 1 24 26 Ø 34 9 Outdoor Unit Capacity Pipe diameter 1 Gas pipe 2 Liquid pipe 3 Liquid Pipe P4 ...

Page 7: ...2 3m H2 3m Indoor unit indoor unit Upper outdoor unit H2 Indoor unit indoor unit Lower outdoor unit H2 Amount of Additional Refrigerant Refer to specification of Outdoor unit Max Height Difference 40 m or the outdoor unit spec Whichever is shorter of outdoor unit 40m outdoor unit indoor unit Lower outdoor unit H1 20ｍ 30ｍ 130m 120m 100m 40m Furthest equivalent pipe length between outdoor unit Same ...

Page 8: ...20 18 18 3 3 4 2 4 14 14 14 14 4 4 58 HP 3 20 20 18 3 3 60 HP 3 20 20 20 3 3 62 HP 4 16 16 16 14 4 4 64 HP 2 32 32 4 2 4 16 16 16 16 4 4 66 HP 4 18 16 16 16 4 4 68 HP 4 18 18 16 16 4 4 70 HP 4 18 18 18 16 4 4 72 HP 2 36 36 4 2 4 18 18 18 18 4 4 74 HP 4 20 18 18 18 4 4 76 HP 4 20 20 18 18 4 4 78 HP 4 20 20 20 18 4 4 80 HP 2 40 40 4 2 4 20 20 20 20 4 4 82 HP 5 18 16 16 16 16 5 5 5 18 18 16 16 16 6 5...

Page 9: ... combination is available In the other way two or more AHU over 14 HP combination is available Please see examples below Dx TA type with RBMA101UPVA E can mix AHU with normal IDUs Combination AHU from 12 HP and below HP with VRF FCU is available Combination AHU over 14 HP with VRF FCU is prohibited For example For the AHU prepared on site please design by reference of AHU submittal a refrigerant c...

Page 10: ... remote controller not supplied HP 8 10 12 14 16 18 20 24 DN 11 0021 0023 0024 0025 0026 0027 0028 0031 HP 28 32 34 36 38 40 DN 11 0047 0035 0048 0037 0049 0039 Only Heating and Cooling Modes are available on the DDC Type No Automatic or Fan Only Components supplied loose requires brazing and local pipework Only outdoor units that support TU2C LINK can be set 2 Valve kit type name speciﬁcation Thi...

Page 11: ...ority is given The FAN priority control is switched by the DN setting of 4A0 0000 Default no change in FAN mode by 4 20 mA input 0001 FAN control by 4 20 mA input but priority is given to FAN control from the outdoor unit 0002 FAN control 4 20 mA input with priority The FAN mode switching threshold value for 4 20 mA input can be changed in the DN setting The change in FAN speed with 4 20 mA input ...

Page 12: ...10 00 0 1 2 3 4 5 6 7 8 9 10 11 12 V STEP SW501 Bit4 ON Liner 0 10V Analogue input capacity control Cooling Mode ON OFF Heating Mode Capacity Control STEP Linear Stepped Capacity Control STEP 10 00 10 00 V STEP 13 100 ON OFF 9 00 9 70 Max demand Approx ΔT 2 Stepped Linear Linear Stepped 9 50 8 80 10 00 10 00 V 8 00 8 95 STEP 12 90 STEP 11 100 8 75 7 80 9 50 8 20 Max demand Approx ΔT 2 Stepped Line...

Page 13: ...ure can be changed according to the 0 10 V input of AI3 In the set temperature with the remote controller and this control the post setting is prioritized The set temperature can be changed only for cooling and heating operations AI4 Nothing Cannot be used Analog Input 2 DC 0 10 V Available Prohibition Shield wire MAX 200m P11 ...

Page 14: ...than 1 minute the check code P10 is generated and the Dx coil controller switches off automatically MODE 2 Normally open DC12 V When Bit1 of SW505 is ON If this contact is short for more than 1 minute the check code P10 is generated and the Dx coil controller switches off automatically Available Prohibition MAX 100m MAX 100m MAX 100m MAX 100m MAX 100m MAX 100m P12 ...

Page 15: ...op the air conditioner from the outside Used by switching functions with settings of Code No DN Code Notice code is continuously issued while input signal is ON 201 is displayed in the Notice code history when there is input in DI4 Notice code is a function dedicated to TU2C Link communication Set data corresponding to Notice code to be used to one of Code No 180 to 189 in accordance with followin...

Page 16: ...by turning on this terminal External trouble Input signal type pulse static is selectable by umper Wire 01 on the Indoor DX P C board MCC 1777 Connect Default Pulse Cut Static Note the unit will not operate until there is an appropriate 0 10V Capacity Control signal Available Prohibition P14 ...

Page 17: ...eration level is lower than capacity command 2 Outdoor unit s operation level is higher than capacity command 3 Cooling oil recovery Heating refrigerant recovery control 4 Cooling operation output 5 Heating operation output 6 Thermostat ON 7 15 Do not use 16 Under Hz upper limit regulation due to heat sink overheating DO6 DO_2 Digital Output2 Output function set using rotary switch SW504 on the DD...

Page 18: ... the output changes by changing the fan speed from the remote controller DOD FAN mode Output Output Fan Mode DOD Mid If select the fan output from interface use this output For TA and TF types the output changes by changing the fan speed from the remote controller DOE FAN mode Output Output Fan Mode DOE Low If select the fan output from interface use this output For TA and TF types the output chan...

Page 19: ...2 BLK GND BLU 3 BLU Output 4 BLK GND WHI 1 WHI Input 2 BLK GND WHI 3 WHI Input 4 BLK GND WHI 3 BLU Input 4 BLK GND WHI 5 YEL Input 6 BLK GND 1 TX temperature sensor is an option accessory part TX can be used with application TA type or TF type TC1 Specification PMV1 82 BLU PMV2 84 BLK Function Connector No CN Connector collar Pin No Wire collar Input1 0 10V Input2 0 10V No function Input1 4 20mA I...

Page 20: ... OFF Input GRN 4 ORN Input Notice Input GRN 5 GRN Input Operation Mode Input Cool Heat GRN 6 YEL Input Modbus A WHI 5 YEL Modbus B WHI 4 ORN Degital output1 user defined RED 2 RED Output Degital output2 user defined RED 3 WHI Output 2 Safety SW701 output will depend on combinations For more detail please refer to Terminal DI1 DI1 Specification Function Connector No CN Connector collar Pin No Wire ...

Page 21: ...P19 ...

Page 22: ... corrected capacity of the selected outdoor unit by all multiplying Correction of indoor temperature condition Refer to Chart 1 Correction of outdoor temperature condition Refer to Databook of Outdoor unit Correction of connecting pipe length and lift between AHU FAHU and Outdoor units by both the longest length and the largest height Refer to Databook of Outdoor unit Correction of outdoor unit di...

Page 23: ...applicable only for SMMS u and SMMS 4 Corrective amount of refrigerant depending on the outdoor unit diversity Connected ratio of indoor units to outdoor units Corrective amount of refrigerant depending on the Dx coil Interface Capacity HP Guideline HP cooling only pattern A and B 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 1 4 1 8 2 1 2 5 2 9 3 2 3 6 3 9 4 3 4 ...

Page 24: ...he counter flow principle must be observed for the DX COIL design A Drain Pan must be fitted even if only used in Heat mode due to defrost cycles How to select Dx COIL Design AHU Operating mode Cooling Only use or Cooling Heating use Confirm with AHU s 1 Cooling mode coil Air On Temp and 2 Evaporator Air Suction temp Design temp Guideline HP Guideline TF Cooling Heating use Guideline CO Pattern A ...

Page 25: ...HP 40 0 54 0 30 0 38 0 18 0 22 0 HP 8 10 12 14 16 18 20 22 24 Std 3 600 4 200 5 300 6 140 7 200 7 800 8 400 9 520 10 370 Min 2 880 3 360 4 240 4 920 5 760 6 240 6 720 7 620 8 290 Max 4 320 5 040 6 400 7 420 8 640 9 360 10 080 11 490 12 510 Min 3 400 4 250 5 100 5 950 6 800 7 650 8 500 9 350 10 200 Max 4 600 5 750 6 900 8 050 9 200 10 350 11 500 12 650 13 800 Copper Tube Dia mm Ø12 7 Ø9 52 Ø8 00 Re...

Page 26: ...50 52 54 56 58 60 Std 18 820 19 660 20 400 21 350 22 200 23 400 23 890 24 730 25 200 Min 15 050 15 730 16 320 17 080 17 760 18 720 19 110 19 780 20 160 Max 22 710 23 730 24 480 25 760 26 780 28 080 28 820 29 840 30 240 Min 18 700 19 550 20 400 21 250 22 100 22 950 23 800 24 650 25 500 Max 25 300 26 450 27 600 28 750 29 900 31 050 32 200 33 350 34 500 Copper Tube Dia mm Ø12 7 Ø9 52 Ø8 00 Recommende...

Page 27: ...2 84 86 88 90 92 94 96 Std 34 020 34 870 35 710 36 560 37 400 38 250 39 090 39 940 40 780 Min 27 220 27 890 28 570 29 250 29 920 30 600 31 270 31 950 32 630 Max 41 050 42 070 43 090 44 110 45 130 46 150 47 170 48 190 49 210 Min 34 000 34 850 35 700 36 550 37 400 38 250 39 100 39 950 40 800 Max 46 000 47 150 48 300 49 450 50 600 51 750 52 900 54 050 55 200 Copper Tube Dia mm Ø12 7 Ø9 52 Ø8 00 Recom...

Page 28: ...CWB Max Capacity kW 308 0 315 0 318 0 324 0 330 0 339 0 343 0 350 0 357 0 Coil on Air Temp 12 28 CWB Condensating Temp 52 C Sub Cooling 4K 20 CDB HP 116 118 120 Std 49 230 50 080 50 920 Min 39 380 40 060 40 740 Max 59 400 60 420 61 440 Min 49 300 50 150 51 000 Max 66 700 67 850 69 000 Max Capacity kW 324 8 330 4 336 0 Coil on Air Temp 15 24 CWB 18 32 CDB Evaporating Temp 6 5 C Superheat 6K 27 CDB ...

Page 29: ...CODE DN code 0F 0000 to 0001 by a wired remote controller HP 8 10 12 14 16 18 20 22 24 Std 3 600 4 200 5 300 6 140 7 200 7 800 8 400 9 520 10 370 Min Max Min 3 400 4 250 5 100 5 950 6 800 7 650 8 500 9 350 10 200 Max 6 400 8 000 9 600 11 200 12 800 14 400 16 000 17 600 19 200 Copper Tube Dia mm Ø12 7 Ø9 52 Ø8 00 Recommended Ø9 52 or Less Max Capacity kW 22 4 28 0 33 5 40 0 45 0 50 4 56 0 61 5 67 0...

Page 30: ...58 60 Std 18 820 19 660 20 400 21 350 22 200 23 400 23 890 24 730 25 200 Min Max Min 18 700 19 550 20 400 21 250 22 100 22 950 23 800 24 650 25 500 Max 35 200 36 800 38 400 40 000 41 600 43 200 44 800 46 400 48 000 Copper Tube Dia mm Ø12 7 Ø9 52 Ø8 00 Recommended Ø9 52 or Less Max Capacity kW 125 0 130 0 140 4 140 4 145 8 151 2 160 0 162 4 168 0 Coil on Air Temp 15 24 CWB 18 32 CDB Evaporating Tem...

Page 31: ...2 94 96 Std 34 020 34 870 35 710 36 560 37 400 38 250 39 090 39 940 40 780 Min Max Min 34 000 34 850 35 700 36 550 37 400 38 250 39 100 39 950 40 800 Max 64 000 65 600 67 200 68 800 70 400 72 000 73 600 75 200 76 800 Copper Tube Dia mm Ø12 7 Ø9 52 Ø8 00 Recommended Ø9 52 or Less Max Capacity kW 224 0 230 4 240 0 241 2 246 6 252 0 257 6 263 2 270 0 Coil on Air Temp 15 24 CWB 18 32 CDB Evaporating T...

Page 32: ... 19 CWB Max Capacity kW Coil on Air Temp Condensating Temp Sub Cooling HP 116 118 120 Std 49 230 50 080 50 920 Min No restriction Max No restriction Min 49 300 50 150 51 000 Max 92 800 94 400 96 000 Max Capacity kW 324 8 330 4 336 0 Coil on Air Temp 15 24 CWB 18 32 CDB Evaporating Temp 6 5 C Superheat 6K 27 CDB 19 CWB Max Capacity kW Coil on Air Temp Condensating Temp Sub Cooling Cooling Air Sucti...

Page 33: ...n CODE DN code 0F 0000 to 0001 by a wired remote controller HP 8 10 12 14 16 18 20 22 24 Std 3 600 4 200 5 300 6 140 7 200 7 800 8 400 9 520 10 370 Min Max Min 1 800 2 250 2 700 3 150 3 600 4 050 4 500 4 950 5 400 Max 4 000 5 000 6 000 7 000 8 000 9 000 10 000 11 000 12 000 Copper Tube Dia mm Ø12 7 Ø9 52 Ø8 00 Recommended Ø9 52 or Less Max Capacity kW 22 4 28 0 33 5 40 0 45 0 50 4 56 0 61 5 67 0 C...

Page 34: ...0 Std 18 820 19 660 20 400 21 350 22 200 23 400 23 890 24 730 25 200 Min Max Min 9 900 10 350 10 800 11 250 11 700 12 150 12 600 13 050 13 500 Max 22 000 23 000 24 000 25 000 26 000 27 000 28 000 29 000 30 000 Copper Tube Dia mm Ø12 7 Ø9 52 Ø8 00 Recommended Ø9 52 or Less Max Capacity kW 125 0 130 0 140 4 140 4 145 8 151 2 160 0 162 4 168 0 Coil on Air Temp 15 32 CWB 18 43 CDB Evaporating Temp 6 5...

Page 35: ...2 94 96 Std 34 020 34 870 35 710 36 560 37 400 38 250 39 090 39 940 40 780 Min Max Min 18 000 18 450 18 900 19 350 19 800 20 250 20 700 21 150 21 600 Max 40 000 41 000 42 000 43 000 44 000 45 000 46 000 47 000 48 000 Copper Tube Dia mm Ø12 7 Ø9 52 Ø8 00 Recommended Ø9 52 or Less Max Capacity kW 224 0 230 4 240 0 241 2 246 6 252 0 257 6 263 2 270 0 Coil on Air Temp 15 32 CWB 18 43 CDB Evaporating T...

Page 36: ... 28 CWB Max Capacity kW Coil on Air Temp Condensating Temp Sub Cooling HP 116 118 120 Std 49 230 50 080 50 920 Min No restriction Max No restriction Min 26 100 26 550 27 000 Max 58 000 59 000 60 000 Max Capacity kW 324 8 330 4 336 0 Coil on Air Temp 15 32 CWB 18 43 CDB Evaporating Temp 6 5 C Superheat 6K 33 CDB 28 CWB Max Capacity kW Coil on Air Temp Condensating Temp Sub Cooling Cooling Air Sucti...

Page 37: ...10 5 170 Mid 1 440 1 800 2 130 2 580 2 900 3 260 3 620 4 340 Low 1 200 1 470 1 770 2 130 2 400 2 700 3 000 3 600 Min 1 720 2 150 2 580 3 010 3 440 3 870 4 300 5 160 Max 3 520 4 400 5 280 6 160 7 040 7 920 8 800 10 560 Copper Tube Dia mm Ø12 7 Ø9 52 Ø8 00 Recommended Ø9 52 or Less Max Capacity kW 22 4 28 0 33 5 40 0 45 0 50 4 56 0 67 0 Coil on Air Temp 10 32 CWB 19 46 CDB Evaporating Temp 6 5 C Sup...

Page 38: ...d Ø9 52 or Less Max Capacity kW 80 0 90 0 101 0 112 0 Coil on Air Temp 10 32 CWB 19 46 CDB Evaporating Temp 6 5 C Superheat 6K 33 CDB 28 CWB Max Capacity kW 90 0 100 0 113 0 126 0 Coil on Air Temp 10 15 CWB Condensating Temp 52 C Sub Cooling 4K 0 CDB Outdoor Suction air temp 46 52 C DB is also available but Temporaty operatable Heating Air Suction Temp Design temp AHU Air Flow rate m3 hr DX Coil I...

Page 39: ... may leak settle or be generated Avoid installation near machines emitting high frequency waves Avoid places where acidic solutions are frequently used Avoid places where sulphur based or other sprays are frequently used Avoid places where vibrations may occur When installing the Dx valve kit and the Dx coil controller into the Air handling unit do not install it where it is exposed to the cooled ...

Page 40: ...ntroller must be located right position position for TOSHIBA control not demand control The cooling heating demand is determined from the DDC Following the below example picture TA DDC TF Return air only Fresh air only FA mixed with RA Heat recovery coil AHU Return Air Supply Air TA sensor position Dx coil Fan supply Fresh Air Supply Air TA sensor position Fresh Air Supply Air TA sensor position R...

Page 41: ...he component s temperature does not exceed 120 C B Whilst brazing nitrogen gas must flowed through the PMV body and pipework to prevent internal oxidization C Prevent cooling water from getting inside the PMV body and connector of the lead during brazing D Take care not to damage the PMV cables during brazing Sensor holders To ensure reliable operation all Sensor holders must be fitted by brazing ...

Page 42: ...the color of the wiring of the PMV side and Connections the controller side For the PMV sensor wiring do not bundle it with the motor wiring The wrong operation may result in The PMV cable is supplied at the maximum permissible length of 5m P40 ...

Page 43: ...efrigerant recovery and oil lubricant recovery control during cooling and heating operation When RSW503 504 is set as 3 when recovery control starts output signal will be from DO5 DO5 DO6 DO6 Please check outdoor units Service Manual for more detail 4 Defrost control Full Defrost Defrost control is designed to performed according to the amount of frost on the outdoor unit s time heat exchanger or ...

Page 44: ...ee Heating Recovery operation normally takes place after defrosting In the case of the coupled system when any of the outdoor units satisfies the defrosting start condition all the units in the group to which the unit belongs start defrosting operation and the other Gr units continue heating operation High Pressure release This control function is aimed at automatically shutting down a compressor ...

Page 45: ...9 Cable specifications P43 ...

Page 46: ...10 Modbus setting method P44 ...

Page 47: ...de bit2 temperature setting bit4 FAN 30008 Analogue Input Capacity Control 2 0 15 30009 30019 Reserved 30020 CN90 DI1 Safty contact input 2 0 OFF 1 ON 30021 CN90 DI2 External error input 2 0 OFF 1 ON 30022 CN90 DI3 Forced Thermo OFF input 2 0 OFF 1 ON 30023 CN90 DI4 Notice input 2 0 OFF 1 ON 30024 30039 Reserved 30040 TC1 2 10 times values 30041 TC2 2 10 times values 30042 TC 2 10 times values 300...

Page 48: ...s 30107 Heating lower limit set temperature 2 10 times values 30108 Dry upper limit set temperature 2 10 times values 30109 Dry lower limit set temperature 2 10 times values 30110 Automatic mode upper limit set temperature 2 10 times values 30111 Automatic mode lower limit set temperature 2 10 times values 30112 Dual Set point Function Status 2 0 OFF 1 ON 30113 Setting capacity 2 Similar setting t...

Page 49: ...y 0000 Unfixed 0000 Unfixed 0021 0023 0024 0025 0026 0027 0028 0031 8HP 10HP 12HP 14HP 16HP 18HP 20HP 24HP 0047 0035 0048 0037 0049 0039 28HP 32HP 34HP 36HP 38HP 40HP 12 Line address 0001 No 1 unit to 0030 No 30 unit 0000 Unfixed 13 Indoor unit address 0001 No 1 unit to 0064 No 64 unit 0099 Unfixed 28 Automatic restart of 0000 None 0001 Restart 0000 None power failure 33 Temperature unit select 00...

Page 50: ...12 Dx coil Controller Dx valve kit Dimensions P48 ...

Page 51: ...12 Dx coil Controller Dx valve kit Dimensions P49 ...

Page 52: ...13 Wiring Diagram P50 ...

Page 53: ...P51 ...

Page 54: ...etwork and analog interface 91 ９A Advanced central control BMS CT2560U E Central remote controller TCB SC640U E Central remote controller RBC AMSU51 EN ES BACnet IP BMS IFBN1280U E Appliance name Model Name and appearance Appliance name Model Name and appearance Wired remote controller RBC AMTU31 E TR Modbus Interface BMS IFMB1280U E RBC ASCU11 E TR Touch Screen Controller ...

Page 55: ...X0TLR E Schedule timer TCB EXS21TLE Smart device control interface Wired remote controller Central remote controller TCB CC163TLE2 Modbus Interface BMS IFMB0TLR E BMS IWF0320E RBC ASC11E RBC AS41E Smart BMS Manager with data analyzer NRC 01HE Touch Screen Controller BMS SM1281ETLE LON Interface RBC AMS54_55E ES EN BACnet IP BMS IFBN640TLE Appliance name Model Name and appearance Appliance name Mod...

Page 56: ...of TC1 sensor Check for trouble in indoor P C board Check whether the TC1 sensor is correctly installed in its place F10 TA Sensor trouble Check the connection of TA sensor connector and wiring Check resistance characteristics of TA sensor Check for trouble in indoor P C board F11 TF Sensor trouble Check connection of TF sensor connector and wiring Check resistance characteristics of TF sensor Che...

Page 57: ...control If the error display appears on the remote controller do not reset an error by yourself Contact the service firm or the dealer Refer to the data book for system controller when using the system controller 4 Service Regular maintenance is required to prolong the life of the units It is recommended that the maintenance contract be concluded with a maintenance firm 17 Warranty Specifications ...

Page 58: ...VRF Dx coil interface Design Guideline May 2022 Third Edition DG003 03 ...

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