Mitsubishi Electric MSC-GE-VB Service Manual page 29

• The standard opening is on the straight line, which connects an each standard point in the section where divided into seven
according to the operation frequency of compressor as shown in the figure below.
(LEV opening is controlled in proportion to the operation frequency.)
NOTE: Opening is adjusted at the standard opening according to the indoor unit conditions.
However, inclination of standard opening in each point of opening does not change with the original curve.
• Add opening provided in Difference in Capacity in the table below to the standard opening from 1 to 8 (MXZ-2B)/ 1 to 15 or
above (MXZ-3B/4B/5B/3C/4C/5C/6C), when capacity of the indoor unit is excluding code 1.
• Add opening provided in Difference in Operation number in the table below to determined LEV opening for each indoor unit,
when 2, 3, 4, 5 or 6 indoor units are operated at the same time.
NOTE: Even when the adjusted standard opening exceeds the driving range from 59 to 500 pulse, actual driving output opening
is in a range from 59 to 500 pulse.
10
09
08
07
06
05
04
03
02
01
MXZ-2B30VA
LEV Opening(code) 1 2
COOL 340 360 360 360 390 390 390 390 400 410
HEAT 200 220 250 280 300 320 340 360 380 400
MXZ-2B40VA
LEV Opening(code) 1 2
COOL 240 260 280 300 330 350 370 390 400 410
HEAT 200 220 250 280 300 320 340 360 380 400
MXZ-2B52VA
LEV Opening(code) 1 2
COOL 340 360 360 360 390 390 390 390 400 410
HEAT 200 220 250 280 300 320 340 360 380 400
Operation number
Code3,4
COOL
HEAT
33 55 76 98 120 142 163 185 207
23 38 54 69 84 100 115 131 146
14 23 32 41 50
20 30 40 49 59
Compressor operating frequency (Hz)
Standard opening (pulse)
3 4 5 6
Standard opening (pulse)
3 4 5 6
Standard opening (pulse)
3 4 5 6
Difference in capacity
Code5,6
10 20
5 10
4Hz
MXZ-2B30/2B40VA
MXZ-2B52/3B/4B71/3C/4C71VA
59 68 77 86 MXZ-4B80/5B100/4C80/5C100VA
69 79 89 99 MXZ-6C120VA
7 8 9 10
7 8 9 10
7 8 9 10
Code7,8
30
15
29
Difference in operation number
2
-60
-100