Daikin FTX25JVEA9, Руководство по обслуживанию

Страница: 122 / 410

Si18-201 System control
Main Functions 109
3. System control
3.1 Outline of System Control
YES
YES
YES
NO
NO
NO
BP unit BP unit
EVG
EVL
EVG
EVL
BP unit BP unit
EVG EVG
(M1003)
Power supply ON
Compressor / OFF
Compressor / ON
Unit stop (standby control)
· Warming-up function
· Cooling electrical switch box
Heating
· Oil return control
Cooling
· Oil return control
Operation start
· Initial frequency (differ from cooling and heating)
· Decision of initial motorized valve opening.
(differ from cooling and heating)
(Before equalizing)
· Standby operation
3-minutes standby
· Equalizing control
· Fan OFF delay
ON command
OFF command
ON
command
OFF control
ON control
OFF
command
Has
the previous
standby operation
completed?
Start-up standby operation
Command
ON ?
Defrost control
Feedback control
Cooling
Heating
Cooling SC control (Decision for EVL open/close)
BP unit capacity control (Decision for EVG open/close)
(1 or 2 step control)
EVL: Open
(Super-multi control)
EVL: Close
(Independent VRV control)
EVG: Close
(Super-multi control)
EVG: Open
(Independent VRV control)
SH control SC control
— —
—
SC control
Target discharge pipe temp. control
Target discharge pipe temp. control
Target discharge pipe temp. control Target discharge pipe temp. control
Reverse target discharge pipe control
Target discharge pipe control
Gas pipe isothermal control
<Excess refrigerant processing>:
Subcooling control in cooling
· Refrigerant is stored in the piping
before EV of BP unit. <Excess refrigerant treatment>:
Reverse target discharge pipe temp. control in heating
· Firstly refrigerant is stored inside the piping
in the no-operation room unit.
· When overflow command is generated,
refrigerant is stored in the receiver.
System protection control
· Gas shortage control
· Wet protection control
· Peak cut / Freeze protection control
· Discharge pipe temp. control
· Differential pressure securing fin control
· Year-round cooling
· Input current control
· Compressor protection control
· High pressure control
Completed
Is
heating oil
return control
required?
Cooling capacity control Heating capacity control