Controls At Mode Changing / Start-Up - Daikin FTXS20G2V1B Service Manual

SiENBE04-808_A
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 preheating command from
the indoor unit, the outdoor temperature, and the discharge pipe temperature.
„ RK(X)S20-42G2V1B, ARXS20-42G2V1B
Detail
ON Condition
Š When the discharge pipe temperature is below 10ºC, the inverter operation in open phase
OFF Condition
Š When the discharge pipe temperature is higher than 12ºC, the inverter operation in open
„ RK(X)S20-35G2V1B9, ARXS20-35G3V1B
Outdoor temperature ≥ 7°C → Control A
Outdoor temperature < 7°C → Control B
Control A
Š ON condition
Š OFF condition
Control B
Š ON condition
Š OFF condition
„ RK(X)S50G2V1B, ARXS50G2V1B
Outdoor temperature ≥ 10°C → Control A
Outdoor temperature < 10°C → Control B
Control A
Š ON condition
Š OFF condition
Control B
Š ON condition
Š OFF condition
Function and Control
starts.
phase stops.
Discharge pipe temperature < 10°C
Discharge pipe temperature > 12°C
Radiation fin temperature ≥ 90°C
Discharge pipe temperature < 20°C
Discharge pipe temperature > 22°C
Radiation fin temperature ≥ 90°C
Discharge pipe temperature < 6°C
Discharge pipe temperature > 8°C
Radiation fin temperature ≥ 90°C
Discharge pipe temperature < 10.5°C
Discharge pipe temperature > 12°C
Radiation fin temperature ≥ 90°C
Control Specification
48