Normal Control; Compressor Control - Daikin VRV-WIII RWEYQ72PTJU Service Manual

Normal Control

5. Normal Control

5.1

Compressor Control

5.1.1 Compressor Control

Compressor PI Control
Carries out the compressor capacity PI control to maintain Te at constant during cooling operation
and Tc at constant during heating operation to ensure stable unit performance.
[Cooling operation]
Controls compressor capacity to adjust Te to
achieve target value (TeS).
Te setting
[Heating operation]
Controls compressor capacity to adjust Tc to
achieve target value (TcS).
Tc setting
[Cooling/Heating simultaneous operation]
Controls compressor capacity to adjust Te to achieve target value (TeS) and Tc to achieve target value
(TcS) at the same time.
Te setting
Tc setting
50
L M (Normal)
(factory
setting)
37.4 42.8 48.2
L M (Normal)
(factory
setting)
109.4 114.8 120.2
L M (Normal)
(factory
setting)
37.4 42.8 48.2
L M (Normal)
(factory
setting)
109.4 114.8 120.2
Te: Low pressure equivalent saturation temperature
(°F)
(°F) TeS: Target temperature of Te
(Varies depending on Te setting, operating
H
frequency, etc.)
Tc: High pressure equivalent saturation temperature
(°F)
(°F) TcS: Target temperature of Tc
(Varies depending on Tc setting, operating
H
frequency, etc.)
(°F)
H Te: Low pressure equivalent saturation temperature
(°F)
TeS: Target temperature of Te
(Varies depending on Te setting, operating
frequency, etc.)
(°F)
H Tc: High pressure equivalent saturation temperature
(°F)
TcS: Target temperature of Tc
(Varies depending on Tc setting, operating
frequency, etc.)
SiUS30-1301
Function and Control