7.4 How to select DX COIL Design Guideline
AHU / DX COIL Design Notes:
Cooling & Heating output figures are based on calculations and ‘general’ test data. All figures are to be taken as
approximations. The properties of the 3rd Party DX COIL will have an effect on the performance of Outdoor units.
・ For the AHU/DX COIL prepared on site, please design with referring to submittal of AHU.
・ The DX COIL must be suitable for R410A.
・ The design should allow operation an Evaporator and a Condenser depends on selected usage.
(Features: Multiple circuits / Liquid Capillary Distributor / Gas Header)
・ The 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
Guideline CO - Pattern
1)Cooling mode coil "Air On" Temp : [15-24
℃
WB]
and
2)Evaporator Air Suction Temp : [27
℃
DB/19
℃
DB]
1)Cooling mode coil "Air On" Temp : [15-32
℃
WB]
and
2)Evaporator Air Suction Temp : [33
℃
DB/28
℃
DB]
Desired
application to
control by RA or
discharge air?
[Cooling only use]
RA
discharge air
TA or DDC
TF or DDC
TA system can mix with VRF FCU
(only RBM-A101UPVA-E
)
Application (type)
P22
Содержание RBM-A101UPVA-E
Страница 21: ...P19 ...
Страница 45: ...9 Cable specifications P43 ...
Страница 46: ...10 Modbus setting method P44 ...
Страница 50: ...12 Dx coil Controller Dx valve kit Dimensions P48 ...
Страница 51: ...12 Dx coil Controller Dx valve kit Dimensions P49 ...
Страница 52: ...13 Wiring Diagram P50 ...
Страница 53: ...P51 ...
Страница 58: ...VRF Dx coil interface Design Guideline May 2022 Third Edition DG003 03 ...