Daikin GYEQ20AN, Руководство по обслуживанию

Страница: 117 / 245

SiAUY361411EA Actuator Control
Control and Functionality 106
[Cooling main, heating main A, heating, heating main B]
• This valve is closed (turned OFF).
• During oil return, recovers refrigerating machine oil by switching from the discharge gas pipe
to the low pressure gas pipe.
„
SV37
[Cooling, cooling main, heating main A, heating, heating main B]
• Switches from the intake gas line to the circuit that passes through the waste heat recovery
heat exchanger.
„
SV3A/3B/3C/3D/3E/3F
[Cooling, cooling main, heating main A, heating, heating main B]
∗
Depending on the control, may turn ON/OFF.
„
SV3G/3H
[Cooling]
• Adjusts the supercooling degree of the condenser to the optimal level.
[Cooling main, heating main A]
• Adjusts the supercooling degree of the condenser to the optimal level.
• Adjusts the fluid pressure to the optimal level.
[Heating, heating main B]
• This valve is closed (turned OFF).
„
Throttle valve
[All modes]
• When the engine starts up:
The throttle valve turns from the standby opening degree (30 pulses) to the start-up opening
degree (120 pulses).
• After startup
The throttle valve opening degree is controlled to maintain the engine at the target speed.
• When the engine stops:
The throttle valve temporarily fully closes (0 pulse) at the same time as the gas solenoid
valve, and then returns to the standby opening degree.
„
Fuel control valve
[All modes]
• The opening degree of the control valve is adjusted depending on the engine load.
SV Cooling
Cooling main,
heating main A
Heating, heating main B
SV3A
This valve is open
(turned ON).
This valve is open
(turned ON).
This valve is closed
(turned OFF).
SV3B
This valve is open
(turned ON).
This valve is open
(turned ON).
This valve is closed
(turned OFF).
SV3C
This valve is open
(turned ON).
This valve is closed
(turned OFF).
This valve is closed
(turned OFF).
SV3D
This valve is open
(turned ON).
This valve is closed
(turned OFF).
This valve is closed
(turned OFF).
SV3E
This valve is closed
(turned OFF).
This valve is closed
(turned OFF).
This valve is open
(turned ON).
SV3F
This valve is closed
(turned OFF).
This valve is open
(turned ON).
This valve is open
(turned ON).