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
850 rpm
715 rpm
580 rpm
445 rpm
360 rpm
285 rpm
400 rpm
250 rpm
0 rpm
M1F
815 rpm
680 rpm
545 rpm
410 rpm
325 rpm
250 rpm
0 rpm
0 rpm
0 rpm
M2F
STEP3
STEP4
STEP5
STEP6
STEP7
STEP8
STEP2
STEP1
STEP0
Cooling
Fan Steps
850 rpm
250rpm
815rpm
M1F
0 rpm
M2F
STEP8*
STEP1
Heating
There are 2 steps in heating operation.
* Depends on models
Reference
(Q0373)
Содержание D-Series
Страница 1: ...Si18 525B Applied Models Super Multi Plus Cooling only Super Multi Plus Heat Pump D Series ...
Страница 33: ...List of Functions Si18 525B 20 List of Functions ...
Страница 34: ...Si18 525B Specifications 21 Part 2 Specifications 1 Specifications 22 1 1 Cooling Only 22 1 2 Heat Pump 42 ...
Страница 71: ...Specifications Si18 525B 58 Specifications ...
Страница 107: ...Printed Circuit Board Connector Wiring Diagram Si18 525B 94 Printed Circuit Board Connector Wiring Diagram ...
Страница 117: ...Refrigerant Flow for Each Operation Mode Si18 525B 104 Refrigerant Circuit ...
Страница 171: ...Indoor Unit SkyAir Models Si18 525B 158 Function ...
Страница 207: ...Test Operation and Field Setting for RA Indoor Unit Si18 525B 194 Test Operation ...
Страница 336: ...Si18 525B Service Check Function Troubleshooting 323 ...
Страница 443: ...BP Unit Si18 525B 430 Removal Procedure The clamps are to be kept in stock Step Procedure Points Clamps Q0529 ...
Страница 469: ...Wiring Diagrams Si18 525B 456 Appendix ...
Страница 475: ...Si18 525B vi Index ...