Mitsubishi Electric MXZ-18TV Service Manual page 11

10-3. Outdoor low pressure and outdoor unit current
1. 07-class unit in single operation (OUTDOOR UNIT : MXZ-18TV)
NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system).
The converted score against the traditional unit system can be gotten according to the formula below.
(1) COOL operation
1Both indoor and outdoor units are under the same
temperature/humidity condition.
Dry-bulb temperature(°C)
20
25
30
2Air flow speed : HI
3Inverter output frequency : 55Hz
(kgf/F• Gauge) (MPa•Gauge)
0.8
8
0.7
7
0.6
6
0.5
5
0.4
4
0.3
3
2
0.2
18
Ambient temperature(:)/ Ambient humidity(%)
(2) HEAT operation
Indoor
DB(°C) 20.0
WB(°C) 14.5
Set air flow to Hi speed.
Inverter output frequency is 80Hz.
1(MPa • G) =10.2(kgf/f f • G)
Relative humidity(%)
50
60
70
20 25 30 32
50 60 70
Outdoor
DB(°C)
WB(°C)
<How to work fixed-frequency operation>
1.Set emergency switch to COOL or HEAT.The switch is locat-
ed on indoor unit.
2.Press emergency run ON/OFF button.
3.Compressor starts running at 55Hz (COOL) or 80Hz (HEAT).
4.Indoor fan runs at HI speed and continues for 30 minutes.
5.To cancel this operation,press emergency run ON/OFF button
or any button on remote controller.
4
3.5
55Hz
3
2.5
2
1.5
0.5
(:) 18
(%)
Ambient temperature(:)/ Ambient humidity(%)
2 7 15 20.0
1 6 12 14.5
8
7
6
5
4
3
2
2
11
20 25 30 32
50 60 70
5 10 15 20
Ambient temperature(:)
55Hz
(:)
(%)
80Hz
25