Daikin RXS60E3V1B [42/150] Controls at mode changing start up

Daikin FDKS35EAVMB [42/150] Controls at mode changing start up

Control Specification SiBE07-618_D

32 Function and Control

3.3 Controls at Mode Changing / Start-up

3.3.1 Preheating Operation

Outline The inverter operation in open phase starts with the conditions of the outdoor temperature, the

discharge pipe temperature, and the radiation fin temperature (internal temperature of PM1).

Detail Outdoor temperature

≥

10°C

→

Control A (preheating for normal state)

Outdoor temperature < 10°C

→

Control B (preheating of increased capacity)

Control A



ON condition

Discharge pipe temperature < 6°C

Radiation fin temperature < 85°C



OFF condition

Discharge pipe temperature > 8°C

Radiation fin temperature

≥

90°C

Control B



ON condition

Discharge pipe temperature < 10.5°C

Radiation fin temperature < 85°C



OFF condition

Discharge pipe temperature > 12°C

Radiation fin temperature

≥

90°C

3.3.2 Four Way Valve Switching

Outline In heating operation, current is conducted, and in cooling and defrosting, current is not

conducted. In order to eliminate the switching sound when the heating is stopped, as the four

way valve coil switches from ON to OFF, the OFF delay switch of the four way valve is carried

out after the operation stopped.

Detail OFF delay switch of four way valve:

The four way valve coil is energized for 150 seconds after the operation is stopped.

3.3.3 Four Way Valve Operation Compensation

Outline At the beginning of the operation as the four way valve is switched, the differential pressure to

activate the four way valve is acquired by having output frequency which is more than a certain

fixed frequency, for a certain fixed time.

Detail Starting Conditions

1. When starting compressor for heating.

2. When the operation mode changes to cooling from heating.

3. When starting compressor for defrosting or resetting.

4. When starting compressor for the first time after the reset with the power is ON.

5. When starting compressor for heating next to the suspension of defrosting.

6. When starting compressor next to the fault of switching over cooling / heating.

Set the lower limit frequency A Hz for B seconds with any conditions 1 through 6 above.

A (Hz)

B

(seconds)

48 70

Содержание

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