Engineering Manual

B-46
MXZ-2C20NA2
2. 09-class unit in single operation
(1) COOL operation
Data is based on the condition of indoor humidity
50%
Air flow speed: High
Inverter output frequency: 40 Hz
(2) HEAT operation
65 70 75 80 85 90 95 100 105 110 115
120
130
140
150
160
170
Ambient temperature (°F)
(°F)
86
80
75
70
Indoor Dry-bulb temperature (°F)
65 70 75 80 85 90 95 100 105 110 115
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Ambient temperature (°F)
(°F)
(°F)
15 20 25 30 35 40 45 50 55 60 65 70 75
2.0
3.0
4.0
5.0
6.0
7.0
Ambient temperature (°F)
Outdoor low pressure
Outdoor unit current (A)
Outdoor unit current (A)
48 Hz
(PSIG)
40 Hz
40 Hz
65
75
70
86
80
75
70
Indoor Dry-bulb temperature (°F)
Indoor Dry-bulb temperature (°F)
<How to work fixed-frequency operation>
1. Set emergency switch to COOL or HEAT. The switch is located
on indoor unit.
2. Press emergency run ON/OFF button.
3. Compressor starts running at 40 Hz (COOL) or 48 Hz (HEAT).
4. Indoor fan runs at High speed and continues for 30 minutes.
5. To cancel this operation, press emergency run ON/OFF button
or any button on remote controller.
Data is based on the condition of indoor humidity
75%
Set air flow to High speed.
Inverter output frequency is 48 Hz.