Daikin VRV, Reference Manual

Page 1: ...VRV Reference Guide ...

Page 2: ...oor comfort products and refrigeration systems for residential commercial and industrial applications Its consistent success is derived in part from a focus on innovative energy efficient and premium quality indoor climate and comfort management solutions A WORLD LEADING MANUFACTURER OF HVAC PRODUCTS OPERATING FOUNDED I N 1 9 2 4 R E S E A R C H DEVELOPMENT O V E R 3 0 0 M I L L I O N O V E R 6 0 ...

Page 3: ...ms with DZK 30 Heat Pump or Heat Recovery 32 Air Cooled or Water Cooled 35 Solutions For Ventilation 38 DESIGN OPTIMIZATION System Zoning 42 Branch Selector Boxes 44 Single or Multi BSV Boxes 45 Optimized Pipe Routes 47 Outdoor Unit Installation Space 48 Heat Pump Changeover 50 CONTROLS STANDARDS Controls Portfolio 54 Local Control Options 58 Featured Controls 59 Codes Standards 61 Tips Considerat...

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Page 5: ...System Overview ...

Page 6: ...one control for Advanced zoning capabilities Can operate up to 64 indoor fan coil units Auto charging function Continuous heating during defrost operation Flexible piping limitations to meet a variety of building needs Excellent energy efficiency especially at part load conditions IEER Daikin s optimized scroll compressor designed for R 410A provides a quiet reliable energy efficient operation Ant...

Page 7: ...rmance Optimum refrigerant system control sees Daikin VRV far exceed industry energy efficiency requirements From controlling temperature in individual areas to the remote monitoring and control of multiple sites the Daikin VRV system has a wealth of propriety control options to cover all end user requirements and ensuring exceptional levels of comfort control Wireless unit Controller Room or Grou...

Page 8: ...he entering air design conditions determined by the building load calculations BLOCK Load Outdoor units should be selected to meet the BLOCK Cooling Heating capacities The maximum simultaneous load demand of all attached indoor units at a given time of day determined by the same LOAD Calculations Optimizing VRV System Selection The most successful users of VRV equipment understand the importance o...

Page 9: ...ign conditions The VRVXpress tool can define diversity also as a percentage Example 8 x FXMQ30P connected to 1 x RXYQ168T Maximum Load required at any given time 170 269 btu Maximum Capacity of the ODU at design conditions 166 315 btu VRV defines the DIVERSITY of the system at 2 In this example if the maximum load is called for the outdoor unit will fall short of demand by 3 954btu This VRV design...

Page 10: ... condition is below 32 F The dry wet bulb temperature entering the coil Also known as air on or mixed air conditions Nominal conditions are typically 80 F db 67 F wb but rarely reflect actual conditions Design air on can also be given as db RH e g 74 F 50 RH AMBIENT Conditions PIPE LENGTH The design ambient temperature for the location of the project Both engineers and D B contractors should have ...

Page 11: ...U 70 2 Minimum Connection Ratio for all other standard Air Cooled and Water Cooled models 50 3 When systems are designed to 130 connection ratio indoor units in thermo ON are set to low fan speed by default This function can be overridden at commissioning stage if desired Capacity Index Table Indoor Unit Size 5 7 9 12 15 18 24 30 36 42 48 54 60 72 96 Indoor Unit Capacity Index 5 8 7 5 9 5 12 15 18...

Page 12: ... with Variable Refrigerant Volume technology can lead to indoor units overcooling the space and cycling on and off This results in poor temperature control In addition to large temperature swings an indoor unit that cycles on and off does not provide continuous de humidification This can lead to higher humidity levels than desired Oversized for heating In areas of very cold climates there is a tem...

Page 13: ...00 49 3 100 49 3 33 49 49 98 C Vertical Rise 130 295 1 130 295 130 295 98 98 130 130 D From 1st Joint 130 295 2 130 295 2 130 295 2 130 130 130 130 295 2 E Linear Length 540 540 540 164 230 390 540 Total Network 3280 3280 1640 820 984 980 980 1 Setting adjustment on condensing unit required 2 Application rules apply Refer to Installation Manual for further details 3 When linear length exceeds 390 ...

Page 14: ...6 18 37 240 20 41 264 22 3 45 288 24 4 49 312 26 54 336 28 58 360 30 3 3 62 384 32 4 64 408 34 230V 460V 5 64 AIR COOLED HEAT RECOVERY Capacity MBH Tn Voltage of Modules of Compressors Max IDU 1 72 6 3 Phase 208 230V 460V 575V 1 1 12 96 8 2 16 120 10 20 144 12 25 168 14 29 192 16 2 3 33 216 18 4 37 240 20 41 264 22 45 288 24 49 312 26 54 336 28 58 360 30 3 6 62 384 32 64 408 34 64 432 36 64 456 38...

Page 15: ...29 192 16 33 216 18 37 240 20 41 264 22 45 288 24 49 312 26 3 3 54 336 28 58 360 30 62 384 32 64 408 34 64 432 36 64 PC Series AURORA HP HR Capacity MBH Tn Voltage of Modules of Compressors Max IDU 1 72 6 3 Phase 208 230V 460V 575V 1 1 12 96 8 16 120 10 20 144 12 2 2 25 192 16 33 240 20 41 Heat pump Aurora will be available from April 2018 Capacity Range ...

Page 16: ...function Cooling operation for VRV IV Heat Pump single module systems RXYQ72 96 120 144 168T can be extended down to 10 F from the standard limitation of 23 F under defined conditions Contact your local Daikin manufacturer s representative or distributor for details A C H E G B F D 16 Communication Wiring should be 18 2AWG stranded no polarity no shielding maximum linear distance 3280ft maximum to...

Page 17: ...10A Btu h Tons 24 24000 2 60 60000 5 R EL Q 192 T A YC U Outdoor Unit Category Standard compatibility symbol R Air cooled RW Water cooled U United States of America Power supply symbol Mode of Operation TJ 3ø 208 230V 60 Hz XY Heat Pump EY Heat Recovery XT Heat Pump 1ø EL Heat Recovery cold climate XL Heat Pump cold climate YD 3ø 460V 60 Hz YC 3ø 575 60 Hz VJ 1ø 208 230V 60 Hz T Series Design Chan...

Page 18: ...Piping and Electrical Wiring Guide Condensing Unit Pipe Connections 18 ...

Page 19: ...tors UPSTREAM to ODU Cut first for 3 8 5 8 Connect as is for 1 4 1 2 Local pipe DOWNSTREAM to IDUs Model Suction Hi Lo Gas Liquid BS4Q54 7 8 3 4 3 8 BS6Q54 1 1 8 3 4 1 2 BS8Q54 1 1 8 3 4 1 2 BS10Q54 1 1 8 1 1 8 5 8 BS12Q54 1 1 8 1 1 8 5 8 NOTE Any pipe reducers required on the ODU side are field supply If connecting pipe is CUT THE PIPE If connecting pipe is CONNECT AS IS Multi Port Twinning Joint...

Page 20: ...Piping and Electrical Wiring Guide Oil Trap Requirements 20 Piping Rules REFNET Branch Pipe Kits ...

Page 21: ...t can be strung together Indoor Unit Model Size BtUh 21 FXFQ T FXZQ FXUQ FXEQ FXDQ FXMQ PB FXMQ M FXAQ FXHQ FXLQ FXTQ TA FXSQ FLA MCA FLA MCA FLA MCA FLA MCA FLA MCA FLA MCA FLA MCA FLA MCA FLA MCA FLA MCA FLA MCA FLA MCA 5 0 6 0 8 7 0 2 0 3 0 2 0 2 0 2 0 3 0 2 0 3 0 7 0 9 0 5 0 6 0 3 0 4 0 6 0 8 9 0 2 0 3 0 2 0 3 0 3 0 4 0 7 0 9 0 5 0 6 0 3 0 4 3 9 4 9 0 6 0 8 12 0 2 0 3 0 3 0 4 0 3 0 4 0 7 0 9 1...

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Page 23: ...System Selection ...

Page 24: ...5 18 1 WAY FLOW CASSETTE FXEQ 7 9 12 15 18 24 4 WAY FLOW UNDER CEILING FXUQ 18 24 30 36 1 WAY FLOW UNDER CEILING FXHQ 12 24 36 WALL MOUNTED FXAQ 7 9 12 18 24 FLOOR MOUNTED FXLQ 7 9 12 18 24 CONCEALED FLOOR MOUNTED FXNQ 7 9 12 18 24 MULTI POSITION AHU FXTQ 9 12 18 24 30 36 42 48 54 60 36 IDU sizeavailable FilterIncluded FilterOptions PumpIncluded PumpOptions OAConnection OAKitOption ...

Page 25: ...48 54 HSP CONCEALED DUCTED FXMQ P 7 9 12 15 18 24 30 36 48 54 HSP HIGH CAPACITY CONCEALED DUCTED FXMQ M 72 96 Accessories The best location to find a list of all accessories for every unit type size is via WEBXpress Click on the options link located at the bottom of the IDU properties window to reveal the following page Example Options Page ...

Page 26: ...ble but limited Considerations Is there a ceiling void space What is the height of the void space What type of ceiling grid or hardboard Is there a requirement to introduce fresh air Note In hard board ceilings service hatches are required Cassette Range Model Size In Ceiling Height Air Throw Maximum Outside Air FXFQ 07 30 10 14 ft per outlet 20 of unit air flow rate 36 48 11 FXZQ T All 11 12 ft p...

Page 27: ...ents Bulkheads Hotels Assisted Living DUCTED units offer the ultimate in flexibility of design air distribution and integration of ventilation It also tends to be the most expensive installed cost option However cost can be minimized by serving multiple rooms with a single unit the loss of individual room units can be countered with thoughtful control design Ducted Range Model Size In Ceiling Heig...

Page 28: ... of the system floor standing units are sometimes installed around the perimeter of a building for optimum air flow FXNQ All 24 Minimal 10 AFR FXTQ 09 36 45 0 9 20 AFR 42 48 53 54 60 58 Application Examples FXNQ FXTQ Perimeter Heating Hallways Condo s Closet spaces Retrofits Considerations Is there an existing unitary type system Is heating the primary requirement Does the client prefer not to see...

Page 29: ...nt the most economical installed cost solution on a VRV system These types of units are most often used when there are budget constraints or where an area has no void space enclosure to conceal other unit types None of these units have integral condensate pumps fitted Considerations How big is the space Where can the unit be located Is piping condensate run clear Is the client accepting of exposed...

Page 30: ...net Gateway Module The DZK BACnet Gateway module allows individual room control via any BACnet IP compatible Building Management System Zoning Box The zoning box is a plenum with motorizeddampers that constantly modulate the conditioned air flow into each zone through standard ductwork in response to the demand from the individual zone thermostat Wireless Thermostat The Wireless thermostat is a ba...

Page 31: ... costs Reduces the amount of refrigerant required in the installation Increases the flexibility of the VRV application design Zoning Box Range Product Reference DZK030E4 DZK030E5 DZK048E4 DZK048E6 Compatible Ducted Unit FXMQ15PB FXMQ24PB FXMQ30PB FXMQ54PB No of Air Duct Outlets 4 x ø8 5 x ø6 4 x ø8 6 x ø6 Number of Zones 2 to 4 2 to 5 2 to 4 2 to 6 Note The FXMQ indoor unit must still be connected...

Page 32: ...pendently of each other When demand is met by an indoor unit the unit will work on fan only or the fan will cycle on off until demand returns or mode change occurs Heat Recovery The 3 pipe Heat Recovery system is the equivalent of a 4 pipe chilled water system A heat recovery system has the ability to provide simultaneous heating AND cooling When both heating and cooling occur simultaneously syste...

Page 33: ...in each case to determine an appropriate selection GEOGRAPHY The location or the project will often dictate what type of system will be required Projects in temperate climates tend to use Heat Recovery due to the changeable load demands that can occur through the course of a day However areas with defined seasons or little demand for simultaneous heating or cooling throughout the year will usually...

Page 34: ... is always important to establish from the outset if an office application is to have multiple tenants Ultimately there are many applications where the answer will be both Heat Pump AND Heat Recovery BUILDING LAYOUT Sites with open plan areas and or similar orientation will often be satisfied by a heat pump system irrespective of geography On the other hand if the site has many aspects individual ...

Page 35: ...al source Air Cooled or Water Cooled Factors that Benefit the use of VRV Water Cooled Series Water Cooled VRV Existing Water Loop By utilizing an existing water loop in the building the advantages of greater energy efficiency can be promoted without having to offset capital costs In addition VRV Water Cooled Series CUs are usually located locally to the area they are serving and will typically att...

Page 36: ... The constant ambient conditions below ground also ensure that these savings are realized year round There are two main types of systems closed loop and open loop Closed loops bury water pipes either in solid ground or in a water source like a pond or lake An open loop draws from groundwater like a well and returns it back to source Closed Loop Buried in Ground Closed Loop in Surface Water Open Lo...

Page 37: ...ied with an open loop system a 3rd party heat exchanger is required to ensure the plate heat exchanger of the VRV condensing unit operates in a closed loop system The VRV condensing units have a heat output into the adjacent mechanical room see table Where multiple units are placed in an enclosed area any potential heat buildup must be addressed either with adequate ventilation or even a fan coil ...

Page 38: ...d Coil up to 34 ton 3 kits on one HP system Destiny AHU Only 600 15000 cfm options Vision AHU Only 900 100 000 cfm options Rebel Rooftop DOAS 6 28 tons 900 7 500 cfm Maverick II Rooftop DOAS 15 75 ton or 4500 23 000 cfm FXMQ_MF OA Processing Unit 630 1230 38 Solutions for Ventilation Range Limitations of our Ventilation Options ...

Page 39: ...humb is based upon introducing OA at nominal conditions Basic Rules 1 COOLING Any percentage of OA can be used as long as the resulting mixed air is between 57 and 77 FWB and 80 RH or lower 2 HEATING Any percentage of OA can be used as long as the resulting mixed air is between 59 and 80 FDB and 80 RH or lower Note Space temperature sensing should be done via the room zone controller or remote sen...

Page 40: ...on system and VRV system VAM Cooling 122 FDB No Limits Heating 5 FDB FXMQ MF Cooling Std Config 90 FWB Dedicated Std Config 50 100 Enhanced Config 78 82 FWB Enhanced Config 50 130 Heating Std Config 23 FDB Combined Std Config 50 100 FXMQ MF 30 Enhanced Config 59 50 FDB Enhanced Config 50 130 FXMQ MF 50 Separate de coupled 1 Pretreated ventilation directly to the space 2 Suitable for all applicatio...

Page 41: ...Design Optimization ...

Page 42: ...or correct heating cooling demands to be met Typical Zoning of Heat Recovery Conversely with heat recovery it is better to ensure that units on different orientations are matched together This ensures more potential for heat recovery to occur at any given time and thereby optimizing energy savings Note Changing systems from HR to HP through the design process is not uncommon It does NOT affect ini...

Page 43: ...educe costs further without compromising flexibility When to use MULTIPLE MODULES There are several advantages to linking VRV condensing units together Less piping total refrigerant needs superior efficiencies due to more outdoor unit heat exchange surface area at partial load and a greater likelihood of heat recovery on 3 pipe to occur due to increase in varying zones on the systems Note This des...

Page 44: ...iple port BSQ branch selector boxes Note When multiple units are grouped together on a single port although a single heat cool zone is created units still operate independent of each other irrespective of whether they are grouped together on one room controller or individual controllers Connection Limitations Model Max Units per PORT Max Capacity per PORT Max Capacity per BOX BSQ36 4 36 MBH 36 MBH...

Page 45: ...10 10 10 10 4 TOTAL PIPING REQUIRED REFNET JOINT SETS BRAZED CONNECTIONS BSQ BOX HANGING RODS 1392 ft 0 54 4 however if it is possible to incorporate multiport boxes a reduction in installation costs can be realized This example using a single 12 port multi box requires no refnet joints and demonstrates a marked reduction in brazed connections and hanging rods 12 28 44 60 76 92 12 28 44 60 76 92 1...

Page 46: ...20 4 port 48 10 10 10 12 28 44 8 32 12 32 16 16 2 2 46 As shown in this scenario being able to select single or multiple BSV boxes in addition to zoning some units together on a single port Daikin heat recovery allows the ultimate in flexibility even on a single system Single or Multi BSV Boxes ...

Page 47: ...route and order of unit attachment can realize significant reduction in pipe REFNET joint sizes as well as refrigerant charge Example 1 LINEAR PIPE ROUTE Example 2 BRANCHING PIPE ROUTE MAIN LINE PIPING ODU to Last REFNET JOINT SIZES 70 ft of 11 8 5 x Large size 72 20 ft of 7 8 2 x Med size 33 4 ft of 1 x Small size 22 NO 5 8 TOTAL REFRIGERANT 37 5 lbs MAIN LINE PIPING ODU to Last REFNET JOINT SIZE...

Page 48: ...y the bespoke nature of project application Therefore it is important to have a grasp of minimum space requirements The 3 criteria to overcome are AIR STARVATION SHORT CIRCUITING SERVICE SPACE There are two constants regardless of the application system type or series VRV ODU s require a minimum of 11 75 300mm at the Rear or air side of the unit VRV ODU s require a minimum of 19 625 500mm at the F...

Page 49: ...the service engineer The minimum service space 20 allows for the removal of a compressor however if rows of units are to be located in one area then place the units front to front and allow 40 between each row 24 air side to air side The minimum space between units of 0 75 can make removing the top plate awkward If space allows always leave at least 4 between units although this is not a necessity...

Page 50: ...ly is to nominate a master unit When the unit s return air sensor measures outside the temperature set point limitation he unit switches itself and all other units on the system to the different mode Master Controller Similar to the option above except mode selection is made manually by via a designated master controller Again all other units on the system then switch mode in unison Note A common ...

Page 51: ...such as hotels where heat pump was installed in an exclusively cooling region 3rd Part Ambient Sensor This option was developed to provide an automatic version of the summer winter switch A remote ambient sensor will dictate when mode change occurs Occasionally used in temperate climates where budget constraints push the application towards heat pump but is an option rarely seen in this market Not...

Page 52: ... the set point against the room temperature Modes are regularly changed accordingly This method can be tailored on each application by weighting the demand of a room based on it s importance Note that this method can be used for units grouped together on a single port of a heat recovery system Note Both Group changeover methods require a Daikin i Touch Manager to operate GROUP In Summary With ALL ...

Page 53: ...Controls Standards ...

Page 54: ...tional iTM Plus Adaptor Advanced Multi Zone Control DCS601C71 Intelligent Touch Controller Shown with Optional D3 Plus Adaptor Multi Zone Control DCS302C71 Centralized Remote Control DCS302C71 x 2 for 128 Indoor Groups Individual Zone Control BRC1E73 Remote Controller BRC2A71 Simplified Remote Controller Wireless Remote Controls Indoor Unit Groups 1 16 64 128 256 512 1024 Groups Individual Zone Co...

Page 55: ...rge commercial projects Advanced multi zone control with scheduling logic and calendar Automatic cooling heating changeover for heat pump systems Single input batch shutdown of all connected air handlers Web browser control and monitoring via Intranet and Internet E mail notification of system alarms and equipment malfunctions Multiple tenant power billing for shared condenser applications Tempera...

Page 56: ...ling logic and calendar Automatic cooling heating changeover for heat pump systems Single input batch shutdown of all connected air handlers Web browser control and monitoring via Intranet and Internet E mail notification of system alarms and equipment malfunctions Multiple tenant power billing for shared condenser applications Temperature set point range restrictions Graphical user interface with...

Page 57: ...control with scheduling logic and calendar Automatic cooling heating changeover for heat pump systems Single input batch shutdown of all connected air handlers Web browser control and monitoring via Intranet and Internet E mail notification of system alarms and equipment malfunctions Multiple tenant power billing for shared condenser applications Temperature set point range restrictions Graphical ...

Page 58: ...iority 7 day Schedule Up to 5 actions per day 7 days 5 1 1 5 2 everyday Off timer from 30 mins to 3 hours Temperature Limiting Configurable upper lower limit restriction for the occupied cool and heat setpoints Control Lockout Ability to restrict all or some of the buttons Ability to limit operation mode selection Run On Timer Allows a unit to be turned on outside time clock settings for an extend...

Page 59: ...n enable the iTM to monitor and control external equipment through the BACnet IP protocol Object Types AI AO AV DI DO DV MSI MSO MSV Applications Integrate the iTM with sensors lighting pumps fan DOAS and etc DCM014A51 iTM BACnet Server Gateway Option With iTM BACnet Server Gateway Option Building Management Systems BMS can monitor and control VRV indoor units via the BACnet IP protocol This optio...

Page 60: ...oint linking DTA116A51 DIII Net Modbus Communication Adaptor The DIII Net Modbus Communication adaptor can be used for Home automation system integration With the adaptor up to 16 indoor units can be controlled through Modbus RTU DMS504C71 Interface for use in LonWorks Interface for use in LonWorks is a hardware gateway solution that enables the BMS to monitor and control the VRV indoor units thro...

Page 61: ...AQ requirements Federal Trade Commission Buy American Act Trade Agreements Act U S DOE has issued waiver for Ductless and VRV products All projects need to be confirmed through the Daikin legal dept who can formally issue waiver notice and explanation for compliance purposes Installation Application Int l Building Code Int l Energy Conservation Code Int l Mechanical Code Wind Loads Use tie down dr...

Page 62: ...lways trump installation instructions Recommendations for optimum piping design No Drier 40 between REFNET etc are not rules they are recommendations that can help prevent issues in certain circumstances If in doubt never be afraid to ask and seek clarification Common Mistake Best Practice Thinking VRV is just a big multi split DX system VRV is a chiller circulating refrigerant instead of water It...

Page 63: ... of Best Practice Guides Hard copies are available and can also be obtained online via daikincity com Best Practice Guides Outdoor Unit Layout Guide BPG VRV4OD Building Automation BPG BAS VRV Extreme Climates BPG EXTAMB Water Cooled VRV BPG WTVR Codes and Standards BPG CS Daikin Zoning Kit BPG DZKAPP VRV LIFE Reference Guide PM DKLIFE Single and Multi Zone Systems Reference Guide PM DCRG Reference...

Page 64: ...mmary Table Electrical Drawings Dimension Piping Wiring Performance Capacity Correction Piping Airflow ESP Sound Level Installation Piping Wiring Fundamentals Sizing Charging Operation How to use Controls Accessories Specification Installation Characteristics Functions Set up Commissioning Service Test Operation Troubleshooting Flow Charts Replace Procedure ...

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Page 68: ...e information Sales and Technical Support 1 855 DAIKIN1 www daikincomfort com or daikinac com PM DVRV 03 18 www daikincity com 2018 Daikin and its design VRV and REFNET are trademarks of Daikin Industries Ltd ...