DAIKIN NORTH AMERICA LLC TEL: 866-4DAIKIN

1645 Wallace Drive, Suite 110 FAX: 972-245-1038

Carrollton, TX 75006 USA www.daikinac.com

VRV Modeling
With eQuest
 DAIKIN NORTH AMERICA LLC TEL: 866-4DAIKIN
1645 Wallace Drive, Suite 110 FAX: 972-245-1038
Carrollton, TX 75006 USA www.daikinac.com

Curve Creation
Importing the VRV efficiency curves requires the user to edit the project .inp file within eQuest.
The file location of the .inp file can be easily located by clicking ToolsView File Locations
View Current Project Directory.

Navigate to the project’s .inp file and open using Notepad. Once the .inp file is opened, scroll to
the section labeled Performance Curves. This can also be done easily be using ctrl+f and
searching for “Performance”.
 DAIKIN NORTH AMERICA LLC TEL: 866-4DAIKIN
1645 Wallace Drive, Suite 110 FAX: 972-245-1038
Carrollton, TX 75006 USA www.daikinac.com

VRV performance
curves are inserted here

Insert the Daikin performance curve data by copy‐pasting the text from the Performance Curves section
of the VRV performance curves.inp file. This text will populate the appropriate curve coefficients within
eQuest.

Once the text has been inserted, save and close the .inp file. Save the project within eQuest, then close
and reopen the project file. This is necessary to incorporate the changes made to the .inp.
 DAIKIN NORTH AMERICA LLC TEL: 866-4DAIKIN
1645 Wallace Drive, Suite 110 FAX: 972-245-1038
Carrollton, TX 75006 USA www.daikinac.com

System Modeling
eQuest does not incorporate a VRF specific system‐type within the program. This example utilizes the
Packaged Single Zone system type for purposes of modeling the system. It is up to the software user to
evaluate the calculation methodology of the various system types within eQuest.

It is necessary to add (6) curves for modeling each VRV system. There are (3) cooling curves required for
each system and (3) heating curves for each system.

Cooling Curves
The cooling curves are:
 Total Capacity; f(t entering wetbulb, t enter condenser)
This curves models equipment capacity based on ambient and indoor unit temperature
conditions. This curve can be found on the Cooling tab under Capacity Curves. Input the total
system capacity at AHRI rated conditions and 100% connection ratio under the Coil
Capacity/Control tab.
 Electric Input Ratio; f(t entering wetbulb, t enter condenser)
This curve models equipment power input based on ambient and indoor unit temperature
conditions. This curve can be found on the Cooling tab under Unitary Power. Input the system’s
cooling input power ratio on this tab.
 Electric Input Ratio; f(part load ratio)
This curve adjusts system power input based on the part load ratio of the condensing unit. This
curve can be found on the Cooling tab under Unitary Power.
 DAIKIN NORTH AMERICA LLC TEL: 866-4DAIKIN
1645 Wallace Drive, Suite 110 FAX: 972-245-1038
Carrollton, TX 75006 USA www.daikinac.com

Ensure that Crankcase Power is set to 0 kW; crankcase heat energy is already included within the power
input values in the engineering data tables. Ensure the Cooling Compressor is modeled as Single Speed.
Changing the Cooling Compressor to Variable Speed would require the creation of a curve based on
compressor RPM data; the curves included in the .inp file are derived from the published data in the
engineering data manual rather than compressor RPM speed.

Heating Curves
The heating curves are:

 Total Capacity; f(t entering wetbulb, t enter condenser)

This curves models equipment capacity based on ambient and indoor unit temperature
conditions. This curve can be found on the Heating tab under Cap Curves/Waste Heat. Input
the system heating capacity at AHRI rated conditions and 100% connection ratio under the Coil
Capacity/Control tab.
 Electric Input Ratio; f(t entering wetbulb, t enter condenser)
This curve models equipment power input based on ambient and indoor unit temperature
conditions. This curve can be found on the Heating tab under Unitary Power. Input the
system’s heating input ratio on this tab.
 Electric Input Ratio; f(part load ratio)
This curve adjusts system power input based on the part load ratio of the condensing unit. This
curve can be found on the Heating tab under Unitary Power.
DAIKIN NORTH AMERICA LLC TEL: 866-4DAIKIN
1645 Wallace Drive, Suite 110 FAX: 972-245-1038
Carrollton, TX 75006 USA www.daikinac.com
 DAIKIN NORTH AMERICA LLC TEL: 866-4DAIKIN
1645 Wallace Drive, Suite 110 FAX: 972-245-1038
Carrollton, TX 75006 USA www.daikinac.com

The naming convention given to the Daikin‐specific curves is as follows:

VRV Cooling Capacity AC* VRV Cooling EIR‐F‐EWB/ODB AC*

VRV Cooling Capacity WC72** VRV Cooling EIR‐F‐EWB/ODB WC72**
VRV Cooling Capacity WC84*** VRV Cooling EIR‐F‐EWB/ODB WC84***
VRV Heating Capacity AC* VRV Heating EIR‐F‐EWB/ODB AC*
VRV Heating Capacity WC72** VRV Heating EIR‐F‐WEB/ODB WC72**
VRV Heating Capacity WC84*** VRV Heating EIR‐F‐WEB/ODB WC84***
VRV Cooling PLR AC* VRV Heating PLR AC*
VRV Cooling PLR WC72** VRV Heating PLR WC72**
VRV Cooling PLR WC84*** VRV Heating PLR WC84***

*Use for all air‐ cooled model numbers

**Use for all water‐cooled systems based on the RWEYQ72 module, i.e. RWEYQ72, 144, 216
***Use for all water‐cooled systems based on the RWEYQ84 module, i.e. RWEYQ84, 168, 252

Indoor unit fan energy consumption can be modeled on a kW/CFM basis on the Fan Power and Control
tab for each system. The indoor unit CFM and power input during operation can be found in the
electrical characteristics section of the engineering data manual.

For example, the FXMQ48PVJU has a nominal HH speed CFM of 1377, with a corresponding input of
460W. This results in a kW/CFM of 0.000334.
 DAIKIN NORTH AMERICA LLC TEL: 866-4DAIKIN
1645 Wallace Drive, Suite 110 FAX: 972-245-1038
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Power Input Ratio

Cooling Power Input Ratio Heating Cap Power Input Ratio
Model
Cap (btu/h) Input (kW) (btu/btu) (btu/h) Input (kW) (btu/btu)
RXYQ72PBTJ 72,000 4.62 0.2189 81,000 5.91 0.2489
RXYQ96PBTJ 96,000 7.22 0.2566 108,000 7.92 0.2502
RXYQ120PBTJ 120,000 9.08 0.2582 135,000 10.10 0.2553
RXYQ144PBTJ 144,000 9.24 0.2189 162,000 11.80 0.2485
RXYQ168PBTJ 168,000 11.60 0.2356 188,000 13.80 0.2505
RXYQ192PBTJ 192,000 13.70 0.2435 216,000 16.00 0.2527
RXYQ216PBTJ 216,000 16.00 0.2527 243,000 18.00 0.2527
RXYQ240PBTJ 240,000 18.20 0.2587 270,000 20.20 0.2553
RXYQ264PBTJ 264,000 19.00 0.2456 297,000 21.70 0.2493
RXYQ288PBTJ 288,000 20.70 0.2452 324,000 23.90 0.2517
RXYQ312PBTJ 312,000 22.80 0.2493 351,000 26.10 0.2537
RXYQ336PBTJ 336,000 25.10 0.2549 378,000 28.10 0.2536
RXYQ360PBTJ 360,000 27.20 0.2578 405,000 30.30 0.2553
RXYQ72PBYD 72,000 4.62 0.2189 81,000 5.91 0.2489
RXYQ96PBYD 96,000 7.22 0.2566 108,000 7.92 0.2502
RXYQ120PBYD 120,000 9.08 0.2582 135,000 10.10 0.2553
RXYQ144PBYD 144,000 11.00 0.2606 162,000 12.40 0.2612
RXYQ168PBYD 168,000 11.60 0.2356 188,000 13.80 0.2505
RXYQ192PBYD 192,000 13.70 0.2435 216,000 16.00 0.2527
RXYQ216PBYD 216,000 16.00 0.2527 243,000 18.00 0.2527
RXYQ240PBYD 240,000 18.20 0.2587 270,000 20.20 0.2553
RXYQ264PBYD 264,000 19.00 0.2456 297,000 21.70 0.2493
RXYQ288PBYD 288,000 20.70 0.2452 324,000 23.90 0.2517
RXYQ312PBYD 312,000 22.80 0.2493 351,000 26.10 0.2537
RXYQ336PBYD 336,000 25.10 0.2549 378,000 28.10 0.2536
RXYQ360PBYD 360,000 27.20 0.2578 405,000 30.30 0.2553
REYQ72PBTJ 72,000 4.52 0.2142 81,000 5.60 0.2359
REYQ96PBTJ 96,000 7.35 0.2612 108,000 8.30 0.2622
REYQ120PBTJ 120,000 9.41 0.2676 135,000 10.50 0.2654
REYQ144PBTJ 144,000 11.00 0.2606 162,000 12.40 0.2612
REYQ168PBTJ 168,000 12.70 0.2579 188,000 14.40 0.2613
REYQ192PBTJ 192,000 15.60 0.2772 216,000 16.90 0.2670
REYQ216PBTJ 216,000 18.70 0.2954 243,000 19.50 0.2738
REYQ240PBTJ 240,000 21.80 0.3099 270,000 22.00 0.2780
REYQ264PBTJ 264,000 22.50 0.2908 297,000 22.90 0.2631
REYQ288PBTJ 288,000 23.60 0.2796 324,000 25.40 0.2675
REYQ312PBTJ 312,000 26.70 0.2920 351,000 27.90 0.2712
REYQ336PBTJ 336,000 29.60 0.3006 378,000 30.50 0.2753
 DAIKIN NORTH AMERICA LLC TEL: 866-4DAIKIN
1645 Wallace Drive, Suite 110 FAX: 972-245-1038
Carrollton, TX 75006 USA www.daikinac.com

Power Input Ratio

Cooling Power Heating Power
Input Ratio Input Ratio
Model Cap Input Cap Input
(btu/btu) (btu/btu)
(btu/h) (kW) (btu/h) (kW)
RWEYQ72PTJU 72,000 4.20 0.1990 81,000 4.00 0.1685
RWEYQ84PTJU 84,000 5.60 0.2275 94,500 5.40 0.1950
RWEYQ144PTJU 144,000 8.40 0.1990 162,000 8.00 0.1685
RWEYQ168PTJU 168,000 11.20 0.2275 189,000 10.80 0.1950
RWEYQ216PTJU 216,000 12.60 0.1990 243,000 12.00 0.1685
RWEYQ252PTJU 252,000 16.80 0.2275 283,000 16.20 0.1953
RWEYQ72PYDN 72,000 4.20 0.1990 81,000 4.00 0.1685
RWEYQ84PYDN 84,000 5.60 0.2275 94,500 5.40 0.1950
RWEYQ144PYDN 144,000 8.40 0.1990 162,000 8.00 0.1685
RWEYQ168PYDN 168,000 11.20 0.2275 189,000 10.80 0.1950
RWEYQ216PYDN 216,000 12.60 0.1990 243,000 12.00 0.1685
RWEYQ252PYDN 252,000 16.80 0.2275 283,000 16.20 0.1953