Mitsubishi Electric MSC-A07WV-E1 Service Manual page 99

1
COOL 200
HEAT 160
Capacity code 1
Indoor unit 07
<Correction>
1 Suction super heat
(MIN gas pipe temperature thermistor - Evaporation temperature thermistor)
2 Each correction w 1
• (Each gas pipe temperature thermistor - Evaporation temperature thermistor)
3 Discharge temperature
w 1 Perform this, when number of operation units is 2 units or more.
w 2 When the correction opening of suction super heat is 0, correct the LEV opening by discharge temperature.
(1) LEV opening correction by suction super heat (COOL, DRY)
(Suction super heat) = (Minimum gas pipe temperature) - (Evaporation temperature)
When COOL and DRY, correct the LEV openings corrected from the table below.
Suction superheat (S.H.) LEV opening
more than 12
10 to12
8 to 10
6 to 8
6 or less
(2) Separate correction (COOL,DRY)
(When number of operation unit is 2 units)
(a) Correction by the separate super heat
Correct the LEV separately by temperature difference between each gas pipe temperature thermistor and evaporator
temperature thermistor.
1 Calculate each super heat of the unit from the expression below;
(Super heat) = (Each gas pipe temperature) - (Minimum gas pipe temperature)
2 Separate correction is performed according to each super heat in the table below.
LEV opening
Superheat
correction (pulse)
more than 9
6 to9
3to 6
6 or less
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Standard opening (pulse)
2 3 4 5 6
210 220 230 240 240
170 180 190 200 210
2 3 4
09 12 18
correction (pulse)
7
5
4
3
0
10
8
4
0
Difference in
capacity
7 8 Code2 Code3
250 250 25
210 220 20
COOL
•
•
99
Difference in
operation number
2
50 -60
40 -70
DRY HEAT
•
-
• •
w 2 w 2