Discharge Pipe Temperature Control - Daikin E Series Service Manual

Control Specification

3.12 Discharge Pipe Temperature Control

Outline Overheating has a negative influence on the operating lifetime of a compressor. That's why this
function will limit the maximum operating frequency of the compressor if deemed necessary.
Detail Discharge pipe temperature (°C)
Correction value (a) = correction value by operation frequency (b)
Correction value by operation frequency (b)
Correction value by outdoor temperature (c)
When recovering from a total stop (return area) :
Up-area:
Steady area:
Step down area:
Stop area:
72
118 - correction value (a)
108 - correction value (a)
103 - correction value (a)
97 - correction value (a)
85 - correction value (a)
+correction value by outdoor temperature (c)
Operation frequency
50rps
35rps
Outdoor temperature
-10˚C
Frequency settings remain unchanged.
The maximum frequency increases with 2Hz / 60 seconds
Present frequency is maximum frequency.
The maximum frequency decreases with 4Hz per 30 seconds.
The compressor stops and will only restart when the sensor senses a temperature below set
point.
Stop
Step down
Steady
Correction value (b) = 0 deg
Correction value (b) = 8 deg
Correction value (b) = 12 deg
Correction value (c) = 0 deg
Correction value (c) = 7 deg
SiBE04-624
Up
Return
(R5913)
45rps
30rps
(R5914)
-9˚C
(R5915)
Function and Control