10
How to measure the indoor air wet-bulb/dry-bulb temperature difference
1. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets
of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air
speed is high.
2. Attach at least 2 sets of wet-and dry-bulb thermometers to the outdoor air intake.
Cover the thermometers to prevent direct rays of the sun.
3. Check that the air filter is cleaned.
4. Open windows and doors of room.
5. Press the EMERGENCY OPERATION switch once to start the EMERGENCY COOL MODE.
6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
7. 10 minutes later, measure temperature again and check that the temperature does not change.
INDOOR UNIT
OUTDOOR UNIT
Wet-and dry-bulb
thermometers
Wet-and dry-bulb
thermometers
Indoor air WB temperature
difference (deg.)
5.6
6.3
7.1
7.8
8.6
9.4
MUX-A22WV-
E1
(MSC-A07WV-
E1
)
6.1
6.9
7.7
8.5
9.4
10.2
MUX-A22WV-
E1
(MSC-A12WV-
E1
)
B or C
A
9-1.CAPACITY AND THE INPUT CURVES
(ONE INDOOR UNIT WITH ONE OUTDOOR UNIT)
70
Dry-bulb temperature
Relative humidity (%)
50
60
20
25
30
9-2.OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation
①
Both indoor and outdoor unit are under
same temperature/humidity condition.
➁
Air flow should be set at MAX.
③
The unit of pressure has been changed to MPa on
the international system of units(SI unit system).
The conversion factor is : 1(MPa[Gauge]) =10.2(kgf/
f
f
[Gauge] )
Single operation (Unit B or C)
Outdoor unit current (A)
2.0
2.5
3.0
3.5
4.0
230V
230V
1.3
1.1
1.0
0.9
0.8
0.7
Outdoor low pressure (kgf/
F
[Gauge])
11
10
9
8
7
13
1.2
12
(kgf/
F
[Gauge])(MPa[Gauge])
Ambient temperature(˚C)
Ambient humidity(%)
20
50
25
60
30
70
(˚C)
(%)
Ambient temperature(˚C)
Ambient humidity(%)
20
50
25
60
30
70
(˚C)
(%)
1.2
1.0
0.9
0.8
0.7
0.6
(kgf/
F
[Gauge])(MPa[Gauge])
Outdoor low pressure (kgf/
F
[Gauge])
10
9
8
7
6
12
1.1
11
Outdoor unit current (A)
Single operation (Unit A)
4.0
5.0
6.0
7.0
230V
230V
Ambient temperature(˚C)
Ambient humidity(%)
20
50
25
60
30
70
(˚C)
(%)
Ambient temperature(˚C)
Ambient humidity(%)
20
50
25
60
30
70
(˚C)
(%)
MUX-A22WV-
E1
OB318--1.qxp 03.10.30 0:54 PM Page 10
