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[
VII
Control ]
- 159 -
HWE0913A
GB
[3] Controlling BC Controller
1. Control of SV
A, SV
B, and SV
C
SV
A, SV
B, and SV
C turn on or off depending on the operation mode of the branch.
2. Control of SVM1, SVM1b
SVM turns on or off depending on the operation mode.
3. Control of LEV
LEV
opening (sj) is controlled as follows depending on the operation mode.
4. Control of SVM2, SVM2b
Mode
Cooling
Heating
Stopped
Defrost
Port
SV
A
ON
OFF
OFF
OFF
SV
B
OFF
ON
OFF
OFF
SV
C
ON
OFF
OFF
OFF
Operation
mode
Cooling only
Cooling main
Heating only
Heating main
Defrost
Stopped
SVM1,1b
ON
Pressure dif-
ferential con-
trol
*1
*1. Pressure differential control: The detected differential pressure (PS1 and P3) is controlle every minute so
as to be within a certain range.
OFF
OFF
ON
OFF
Operation mode
Cooling only
Cooling
main
Heating only
Heating
main
Defrost
Stopped
G,GA,
HA
type
LEV1
2000
Liquid level
control
*1
dif-
ferential
control
*2
*1. Liquid level control: The liquid level detected by the liquid inlet temperature (TH11 sensor) is controlled so as to be within
a certain range.
*2. Pressure differential control: The detected differential pressure (PS1 and P3) is controlle every minute so as to be within
a certain range.
110
110
*3
*3. Can be 110 or more due to pressure rise on the liquid side (PS1).
2000
1200
LEV2
(only GA,HA type)
LEV3
Superheat
control
*4
*4. Superheat control: The amound of superheat that is calculated on the bypass inlet and outlet temperature (G,
GA,HA:TH12,TH15, GB, HB: TH12, TH15) is controlled every minute so as to be within a certain range.
Pressure dif-
ferential con-
trol
*2
Pressure dif-
ferential con-
trol
*2
G:1000
GA,HA:2000
60
GB,HB
type
LEV3
Superheat
control
*4
Superheat
control
*4
60
60
60
60
Operation
mode
Cooling only
Cooling main
Heating only
Heating main
Defrost
Stopped
SVM2,2b
OFF
OFF
Pressure differ-
ential control
*1
*1. Pressure differential control: The detected differential pressure (PS1 and P3) is controlled every minute so as to be with-
in a certain range.
Pressure differ-
ential control
*1
OFF
OFF
Summary of Contents for PURY-P120TJMU-A
Page 1: ......
Page 11: ... 2 ...
Page 25: ... 16 ...
Page 36: ... II Restrictions 27 HWE0913A GB ...
Page 50: ... II Restrictions 41 41 HWE0913A GB ...
Page 67: ... 58 II Restrictions GB HWE0913A ...
Page 69: ... 60 ...
Page 95: ... 86 III Outdoor Unit Components GB HWE0913A ...
Page 97: ... 88 ...
Page 105: ... 96 IV Remote Controller GB HWE0913A ...
Page 107: ... 98 ...
Page 125: ... 116 ...
Page 145: ... 136 ...
Page 175: ... 166 VII Control GB HWE0913A ...
Page 177: ... 168 ...
Page 203: ... 194 ...
Page 363: ... 354 IX Troubleshooting GB HWE0913A ...
Page 365: ... 356 ...
Page 411: ......