14
MUCFH-GA50VB
MUCFH-GA60VB
MUCFH-GA35VB
23.4
21.6
19.8
18.0
16.2
14.4
12.6
10.8
31.8
29.3
26.9
24.4
22.0
19.5
17.1
14.7
MCFH-GA50VB
18.6
17.2
15.7
14.3
12.9
11.5
10.0
8.6
MCFH-GA35VB
MCFH-GA60VB
Air in
Air out
Wet and dry-bulb
thermometers
FRONT VIEW
Wet and dry-bulb
thermometers
BACK VIEW
INDOOR UNIT
OUTDOOR UNIT
11.1
10.2
9.2
8.3
7.5
6.6
8.7
8.0
7.3
6.6
5.9
5.3
14.7
13.4
12.1
10.9
9.7
8.5
MUCFH-GA50VB
MUCFH-GA60VB
MCFH-GA50VB
MUCFH-GA35VB
MCFH-GA35VB
MCFH-GA60VB
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 inlet 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 inlet.
Cover the thermometers to prevent direct rays of the sun.
3. Check that the air filter is cleaned.
4. Open windows and doors of the room.
5. Press the EMERGENCY OPERATION switch once(twice) to start the EMERGENCY COOL(HEAT) 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.
Dry Bulb temperature (
˚C
)
20
25
30
Relative humidity (
%
)
50
60
70
OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation
1
Both indoor and outdoor units are under the same temperature/humidity condition.
OB381A--1.qxp 10.5.25 9:28 AM Page 14
