Fan Speed Control For Indoor Units - Daikin FTXD60JV1B User Manual

SiBE04-101.book Page 27 Monday, October 15, 2001 3:08 PM
SiBE04-101
1.7

Fan Speed Control for Indoor Units

Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature
and the room temperature.
Phase Steps Phase control and fan speed control contains 8 steps: LLL, LL, L, ML, M, MH, H and HH.
LLL (Heating thermostat OFF)
LL
L
ML
M
MH
H
HH (Powerful)
Refer to automatic airflow control on page 27.
Note: Fan stops during defrost operation.
Automatic Air Flow
The following drawing explains the principle for fan speed control for heating:
Control for Heating
Note: When there is no operation and the night set mode turns on, the step is low. Refer to "Night set mode" on
page 31.
Automatic Air Flow
The following drawing explains the principle of fan speed control for cooling:
Control for Cooling
Main Function
Step Cooling
(R1025)
= Within this range the airflow is automatically controlled when the AIRFLOW ADJUSTING button
is set to AUTOMATIC
Thermostat
Phase control
setting
temperature
-0.5˚C
-1.5˚C
fan speed
fan speed
+1.5˚C
+0.5˚C
Thermostat
setting
Phase control
temperature
Heating Dry mode
FTXD :
50class : 750-1000 (1080) rpm
60class : 750-1040 (1120) rpm
71class : 750-1040 (1120) rpm
FLX :
50class : 400-980 (1060) rpm
60class : 400-1060 (1140) rpm
∗ ( ) for powerful operation
(R1025)
L
-1˚C
Temperature difference between
ML
ambient and set temperature
-2˚C
M
M
+2˚C Temperature difference between
ML
ambient and set temperature
+1˚C
L
(R1027)
General Functions
(R1026)
27