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SiUS121736EA
RA Indoor Unit Functions
Functions and Control
54
2.2
Fan Speed Control for Indoor Unit
Outline
Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH.
The airflow rate can be automatically controlled depending on the difference between the room
thermistor temperature and the target temperature.
Automatic Fan
Speed Control
In automatic fan speed control, the step SL is not available.
= The airflow rate is automatically controlled within this range when
FAN
button is set to
automatic.
Cooling
The following drawing explains the principle of fan speed control for cooling.
*The upper limit is M tap in 30 minutes from the operation start.
Heating
In heating operation, the fan speed is regulated according to the indoor heat exchanger
temperature and the difference between the room thermistor temperature and the target
temperature.
Note:
The fan stops during defrost operation.
COMFORT
AIRFLOW
Operation
CTXG, FTXR, CTXS, FTXS Series
The fan speed is controlled automatically within the following steps.
Cooling
L tap ~ MH tap (same as AUTOMATIC)
Heating
In order to obtain a comfortable airflow, the fan speed may be set to a rate different from
automatic fan speed control.
The latest command has the priority between POWERFUL and COMFORT AIRFLOW.
Step
Cooling
Heating
LLL
LL
L
ML
M
MH
H
HH (POWERFUL)
(R11681)
(R6834)
(R21654)
Fan speed
+2.5°C (+4.5°F)
+1.5°C (+2.7°F)
+0.5°C (+0.9°F)
MH*
M
ML
L
+3°C (+5.4°F)
+2°C (+3.6°F)
+1°C (+1.8°F)
Room thermistor temperature – target temperature
Содержание 2MXS-N Series
Страница 7: ...SiUS121736EA Table of Contents vi 3 Operation Limit 267 ...
Страница 23: ...SiUS121736EA Specifications 10 Part 2 Specifications 1 RA Indoor Unit 11 2 SA Indoor Unit 19 3 Outdoor Unit 22 ...
Страница 133: ...SiUS121736EA Wired Remote Controller BRC944B2 Remote Controller 120 6 Wired Remote Controller BRC944B2 ...