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Daikin RXYQ38MY1B [13/42] Main features
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• Introduction
1
6
• Systems • Introduction
12
6Main features
6-1 Creating maximum comfort
6-1-4 PID control
Proportional Integral Derivative control with an automatic capacity balancing circuit:
– enables the use of lengthy piping up to 100 meters (actual length)
– consists of two control systems:
1Oil control system that controls the refrigerant oil volume to prevent it from raising or backing up in the pipes
2 Refrigerant flow stabilization mechanism: prevents refrigerant drift, caused by level difference of indoor units in the same system.
6-1-5 Operation control of small capacity indoor units
If the operating frequency is minimal, the refrigerant pressure and outdoor temperature are detected, the number of control steps are calculated, and
capacity of outdoor unit heat exchanger (refrigerant accumulates in coils) and air flow of outdoor unit fans (controls pole change of the two fans) are
controlled.
If operating a small-capacity indoor unit, the bypass valve is controlled (ON/OFF), with capacity control being executed at a minimum of 14% for a 5HP
outdoor unit (when operating one 20-class indoor unit), or a minimum of 8% for 8 and 10HP outdoor units (when operating one 20-class indoor unit.
6-1-6 Control flow
Minimum Frequency
(5HP Outdoor Unit: 30Hz)
(8/10HP Outdoor Unit: 30Hz)
No
Are you operating a
small-capacity indoor unit?
Yes
Detection of Refrigerant Pressure and Outdoor
Temperature
Step Control Calculation
Bypass Valve On/Off Control
Capacity Control of Outdoor Unit
Heat Exchangers
Air Flow Control of Outdoor
Unit Fans
Deviation (difference between
sensed pressure and desired value)
No Yes
Frequency Alteration of Inverter Compressor
On/Off of ON/OFF Compressor
Outdoor Coil Capacity
Control Air Volume
Control by Outdoor
Unit Fan
Step Control
Calculation
Detection of
Refrigerant Pressure
and Outdoor
Temperature
Sampling Timer Count
Operating Pressure Detection by Pressure Sensors
Calculation of Constant for Integral Control
Total capacity Decision by Multi-Variable P-Control
Optimal Load Decision
Minimum Frequency
Every T Seconds
Содержание
- I introduction table of contents 2
- Introduction 3
- Possible indoor units using r 410a 3
- Systems introduction 3
- 1 indoor unit capacity index 4
- Possible outdoor units using r 410a 4
- 1 indoor units 5
- Nomenclature 5
- 2 outdoor units 6
- Nomenclature 6
- Introduction 7
- Line up 7
- Systems introduction 7
- Technology 8
- Aero fitting grill aero spiral fan 9
- Dc fan motor 9
- E bridge circuit 9
- Technology 9
- Compact aero box 10
- E pass heat exchanger 10
- I demand function 10
- Technology 10
- 1 creating maximum comfort 11
- Main features 11
- 1 creating maximum comfort 12
- Main features 12
- 1 creating maximum comfort 13
- Main features 13
- 2 energy efficient solution 14
- Main features 14
- 2 energy efficient solution 15
- Main features 15
- 2 energy efficient solution 16
- Main features 16
- 3 high reliability 17
- Main features 17
- 3 high reliability 18
- Main features 18
- 4 eco friendly 19
- Main features 19
- 5 easy and flexible design 20
- Main features 20
- 5 easy and flexible design 21
- Main features 21
- 5 easy and flexible design 22
- Main features 22
- 6 simple and rapid installation 23
- Main features 23
- 6 simple and rapid installation 24
- Main features 24
- Main features 25
- Standard vrv system 25
- System 25
- 6 simple and rapid installation 26
- Main features 26
- 1 selection procedure system based on cooling load 27
- Selection procedure 27
- 1 selection procedure system based on cooling load 28
- Selection procedure 28
- 1 selection procedure system based on cooling load 29
- Selection procedure 29
- 2 capacity correction ratio 30
- Selection procedure 30
- 2 capacity correction ratio 31
- Selection procedure 31
- 2 capacity correction ratio 32
- Selection procedure 32
- 2 capacity correction ratio 33
- Selection procedure 33
- 2 capacity correction ratio 34
- Selection procedure 34
- 2 capacity correction ratio 35
- Selection procedure 35
- 2 capacity correction ratio 36
- Selection procedure 36
- 2 capacity correction ratio 37
- Selection procedure 37
- 3 refnet pipe system 38
- Selection procedure 38
- 3 refnet pipe system 39
- Selection procedure 39
- 4 refnet pipe selection 40
- Selection procedure 40
- Eede03 2 3 05 2003 prepared in belgium by vanmelle 42
- Specifications are subject to change without prior notice 42
- Systems 42
- Zandvoordestraat 300 b 8400 ostend belgium internet http www daikineurope com 42
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