70
Correct the LEV opening according to the difference between target discharge temperature and discharge temperature.
Discharge temperature (
:
)
LEV opening
correction (pulse)
More than Target discharge temp10
Target discharge temp10 to Target discharge temp5
Target discharge temp5 to Target discharge temp2
Target discharge temp2 to Target discharge temperature-2
Target discharge temperature-2
to Target discharge temperature-5
Target discharge temperature-5
to Target discharge temperature-10
Target discharge temperature-10 or less
COOL
5
4
2
0
-1
-3
-4
HEAT
8
3
1
0
-1
-2
-3
MXZ-3A54VA
MXZ-4A71VA
Discharge temperature (
:
)
LEV opening
correction (pulse)
More than Target discharge temp10
Target discharge temp10 to Target discharge temp5
Target discharge temp5 to Target discharge temp2
Target discharge temp2 to Target discharge temperature-2
Target discharge temperature-2
to Target discharge temperature-5
Target discharge temperature-5
to Target discharge temperature-10
Target discharge temperature-10 or less
COOL
5
4
2
0
-1
-3
-4
HEAT
8
3
1
0
-1
-2
-3
MXZ-2A52VA
Discharge temperature (
:
)
LEV opening
correction (pulse)
More than Target discharge temp12
Target discharge temp12 to Target discharge temp5
Target discharge temp5 to Target discharge temp3
Target discharge temp3 to Target discharge temperature-3
Target discharge temperature-3
to Target discharge temperature-5
Target discharge temperature-5
to Target discharge temperature-12
Target discharge temperature-12 or less
COOL
4
2
1
0
-1
-3
-8
HEAT
6
2
1
0
-1
-2
-8
MXZ-4A80VA
(2) Separate correction (COOL,DRY)
(Correction by the separate super heat)
a) Correct the LEV separately by temperature difference between each gas pipe temperature and the minimum gas pipe
temperature of all.
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.
Superheat
LEV opening
correction (pulse)
more than 9
6 to 9
3 to 6
3 or less
3
2
1
0
MXZ-3A54VA MXZ-4A71VA
Superheat
LEV opening
correction (pulse)
more than 9
6 to 9
3 to 6
3 or less
12
8
4
0
MXZ-4A80VA
OBT14A--3qxp 06.1.12 1:10 PM Page 70