Daikin FTXS-L Series - Discharge Pipe Temperature Control

SiUS091133 Control Specification
Function and Control 46
3.3.5 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency is set as follows. (The
function is not activated when defrosting.)
3.4 Discharge Pipe Temperature Control
Outline The discharge pipe temperature is used as the internal temperature of the compressor. If the
discharge pipe temperature rises above a certain level, the upper limit of frequency is set to keep
the discharge pipe temperature from rising further.
Detail
09/12 class 15/18 class 24 class 30/36 class
A (Hz) 48 55 55 46 ~ 55
B (Hz) 64 70 65 65
C (Hz) 88 85 80 80
D (seconds) 240 120 120 120 ~ 500
E (seconds) 360 200 200 100 ~ 200
F (seconds) 180 470 470 470
(sec.)
Time
(R13528)
(Hz)
Frequency
C
B
DEF
A
Zone Control
Stop zone When the temperature reaches the stop zone, the compressor stops.
Dropping zone The upper limit of frequency decreases.
Keep zone The upper limit of frequency is kept.
Up zone The upper limit of frequency increases.
Reset zone The upper limit of frequency is canceled.
09/12 class 15/18 class 24/30/36 class
A 110°C (230°F) 110°C (230°F) 120°C (248°F)
B 105°C (221°F) 103°C (217.4°F) 111°C (231.8°F)
C 101°C (213.8°F) 101.5°C (214.7°F) 109°C (228.2°F)
D 99°C (210.2°F) 100°C (212°F) 107°C (224.6°F)
E 97°C (206.6°F) 95°C (203°F) 107°C (224.6°F)
(R14711)
Discharge pipe
temperature
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
E
A
B
C
D