Daikin D-Series User Manual

Si18-525B Basic Control
Function 113
2.4 Cooling Operation Fan Control
In cooling operation with low outdoor air temperature, this control is used to provide the
adequate amount of circulation air with liquid pressure secured by high pressure control using
outdoor unit fan.
Outline In cooling operation fan control, outdoor unit fans are controlled by PI control to come the
cooling Tc to 34°C.
However in normal operation, the fan control restricts lower limit of the number of rotations
according to outdoor air temperature.
Lower Limit Restriction for Cooling Operation Fan Control
Lower limit
STEP7
Ta≤17ºC Ta≥20ºC
Lower limit
STEP5
Ta≤15ºC Ta≥18ºC
Lower limit
STEP1
Ta≤9ºC Ta≥12ºC
Ta: Outdoor air temperature
No limitation
850rpm
715rpm
580rpm
445rpm
360rpm
285rpm
400rpm
250rpm
0rpm
M1F
815rpm
680rpm
545rpm
410rpm
325rpm
250rpm
0rpm
0rpm
0rpm
M2F
STEP3
STEP4
STEP5
STEP6
STEP7
STEP8
STEP2
STEP1
STEP0
Cooling
Fan Steps
850rpm
250rpm
815rpm
M1F
0rpm
M2F
STEP8*
STEP1
Heating
There are 2 steps in heating operation.
* Depends on models
Reference
(Q0373)

Daikin D-Series Specifications

General

HSPF Rating	Up to 10.0
Cooling Capacity	9, 000 - 36, 000 BTU/h
Heating Capacity	9, 000 - 36, 000 BTU/h
Energy Efficiency Ratio (EER)	Up to 12.5
Sound Level	19 - 50 dB (Indoor), 49 - 60 dB (Outdoor)
Noise Level	19 - 50 dB (Indoor), 49 - 60 dB (Outdoor)
Power Supply	208/230V, 1-phase, 60Hz