Mitsumi electronic MSZ-FDNA Air Conditioner User Manual


 
27
(1) LEV opening correction by discharge temperature
The target discharge temperature is determined according to frequency zone and number of operation unit of the com-
pressor.
<Correction>
COOL DRY HEAT
Discharge temperature
2
2
Each correction
• (Each gas pipe temperature thermistor - Minimum gas pipe temperature thermistor) 1
• (Main indoor coil thermistor - Sub indoor coil thermistor)
1 Perform this, when number of operation units is 2 units or more.
(MXZ-2A20NA
and
MXZ-3A30NA only)
2 Correct the LEV opening by discharge temperature.
MXZ-2A20NA
Operation frequency
of compressor (Hz)
Target discharge temperature (°F/°C)
COOL HEAT
Number of operating unit
1 unit 2 units 1 unit 2 units
Minimum ~ 23 95/35 136.4/58 122/50 122/50
24 ~ 38 104/40 140/60 132.8/56 122/50
39 ~ 54 120.2/49 149/65 140/60 132.8/56
55 ~ 69 136.4/58 154.4/68 140/60 140/60
70 ~ 85 149/65 158/70 140/60 140/60
86 ~ Maximum 158/70 158/70 140/60 140/60
MXZ-3A30NA
Operation frequency
of compressor (Hz)
Target discharge temperature (°F/°C)
COOL HEAT
Number of operating unit
1 unit 2 units 3 units 1 unit 2 unit 3 units
Minimum ~ 14 95/35 131/55 134.6/57 125.6/52 143.6/62 122/50
15 ~ 23 104/40 131/55 134.6/57 136.4/58 150.8/66 131/55
24 ~ 32 120.2/49 136.4/58 145.4/63 149/65 165.2/74 140/60
33 ~ 41 136.4/58 140/60 149/65 154.4/68 172.4/78 152.6/67
42 ~ 50 149/65 149/65 158/70 154.4/68 172.4/78 161.6/72
51 ~ 59 154.4/68 154.4/68 163.4/73 154.4/68 172.4/78 168.8/76
60 ~ 68 158/70 158/70 167/75 154.4/68 172.4/78 168.8/76
69 ~ 77 167/75 163.4/73 176/80 154.4/68 172.4/78 168.8/76
78 ~ 86 167/75 167/75 179.6/82 154.4/68 172.4/78 168.8/76
87 ~ Maximum 167/75 176/80 179.6/82 172.4/78 172.4/78 168.8/76
MXZ-2A20NA-
1
,
2
MXZ-2B20NA MXZ-2B20NA-
1
Operation frequency
of compressor (Hz)
Target discharge temperature (°F/°C)
COOL HEAT
Number of operating unit
1 unit 2 units 1 unit 2 units
Minimum ~ 23 95/35 136.4/58 122/50 122/50
24 ~ 38 104/40 140/60 132.8/56 122/50
39 ~ 54 120.2/49 149/65 140/60 132.8/56
55 ~ 69 136.4/58 154.4/68 145.4/63 140/60
70 ~ 85 149/65 158/70 150.8/66 140/60
86 ~ Maximum 158/70 158/70 152.6/67 140/60