Cool Operation; Heat Operation - Mitsubishi Electric MUZ-FH25VEHZ Service Manual

8-4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT

COOL operation

Both indoor and outdoor unit are under the same temperature/
humidity condition.
Operation: TEST RUN OPERATION (Refer to 8-3.)
Outdoor low pressure
MUZ-FH25VEHZ
(kgf/cm [Gauge])(MPa [Gauge])
2
0.9
9
0.8
8
0.7
7
0.6
6
0.5
5
0.4
4
15 20
50
Ambient temperature(°C)
Ambient humidity(%)
NOTE:
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/cm
Outdoor unit current
MUZ-FH25VEHZ
3.0
2.5
2.0
1.5
15 20 25
50 60
Ambient temperature (°C)
Ambient humidity(%)

HEAT operation

Condition:
Dry bulb temperature (°C)
Wet bulb temperature (°C) 14.5
Operation: Test run operation (Refer to 8-3.)
Outdoor unit current
MUZ-FH25VEHZ
6.0
5.5
5.0
4.5
4.0
15
0 5 10
Ambient temperature (°C)
OBH625A
(kgf/cm [Gauge])(MPa [Gauge])
2
25 30 35
60 70
MUZ-FH35VEHZ
4.5
4.0
3.5
3.0
2.5
30 35 15 20
70 50
Ambient temperature (°C)
Ambient humidity(%)
Indoor
20.0
MUZ-FH35VEHZ
6.0
5.5
5.0
4.5
4.0
20 25
0
Ambient temperature (°C)
Dry-bulb temperature (°C)
MUZ-FH35VEHZ
0.8
7
0.7
6
0.6
5
0.5
4
0.4
3
15 20 25 30
50 60 70
Ambient temperature(°C)
Ambient humidity(%)
2
[Gauge])
MUZ-FH50VEHZ
8
7
6
5
4
3
15
25 30 35
60 70
Outdoor
2 7 15 20.0
1 6 12 14.5
5 10 15 20 25
16
Relative humidity (%)
20
25
30
MUZ-FH50VEHZ
(kgf/cm [Gauge])(MPa [Gauge])
2
0.8
8
0.7
7
0.6
6
0.5
5
0.4
4
0.3
3
15
35
Ambient temperature(°C)
Ambient humidity(%)
20 25 30 35
50 60 70
Ambient temperature (°C)
Ambient humidity(%)
MUZ-FH50VEHZ
8
7
6
5
4
3
0 5 10 15 20
Ambient temperature (°C)
50
60
70
20 25 30 35
50 60 70
25