Panasonic U-20ME1E81, Service Manual

Page: 56 / 177

2WAY SYSTEM
Control Functions - Indoor Unit
2 - 2
2
1. Room Temperature Control
1. Room Temperature Control
The body sensor or remote controller sensor detects temperature in the room. The detected temperature is
called the room temperature. The body sensor is the one contained in the indoor unit.
Body sensor is enabled Remote controller sensor is enabled
Set temp. Set temp. in remote controller Set temp. in remote controller
Detected temp. by
sensor Detected temp. by body sensor Detected temp. by remote controller
sensor
Room temp. Detected temp. by body sensor -
*correction temp. Detected temp. by remote controller
sensor
The thermostat is turned ON or OFF according to the following T.
T (Cooling) T = room temp. – set temp. (set temp. in remote controller)
T (Heating) T = set temp. – room temp.
Correction temperature (only during heating)
If the indoor unit is installed on the ceiling, temperature near the ceiling is higher than near the floor. When
the body sensor is enabled, lower temperature near the floor must be considered. To correct this difference in
temperature, the correction temperature is used.
The factory setting for the correction temperature is different depending on the model. Refer to “15. Parameter”.
Example: Cooling temperature correction
4-Way cassette (correction temperature: 0 degrees)
Body sensor is enabled
Set temp. in remote
controller
28
℃
28
℃
28
℃
Detected temp. by
sensor
30.0
℃
27.5
℃
27.0
℃
Detected temp. by
body sensor
30.0
℃
27.5
℃
27.0
℃
Detected temp. by
remote controller
sensor
30.0
℃
27.5
℃
27.0
℃
Room temp. = temp.
detected by body
sensor
30.0
℃
=30.0
27.5
℃
=27.5
27.0
℃
=27.0
T +2.0deg -0.5deg -1.0deg
Thermostat
ON Thermostat
ON Thermostat
OFF
Example: Heating temperature correction
4-Way cassette (correction temperature: 4 degrees)
Body sensor is enabled
Set temp. in remote
controller
20
℃
20
℃
20
℃
Detected temp. by
sensor
17.0
℃
22.0
℃
25.0
℃
Detected temp. by
body sensor
17.0
℃
22.0
℃
25.0
℃
Detected temp. by
remote controller
sensor
13.0
℃
18.0
℃
21.0
℃
Room temp. = temp.
detected by body
sensor – 4 deg 13.0
℃
=17.0-4
deg
18.0
℃
=22.0-4
deg
21.0
℃
=25.0-4
deg
T +7.0deg +2.0deg -1.0deg
Thermostat
ON Thermostat
ON Thermostat
OFF
SM830204-05_2WAY SYS.indb 2 2015/01/21 17:00:31