![Mitsubishi Electric PUHY-P168 Скачать руководство пользователя страница 173](http://html.mh-extra.com/html/mitsubishi-electric/puhy-p168/puhy-p168_service-handbook_1811176173.webp)
- 164 -
[
VII
Control ]
[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
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 (only for NU-GA model)
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
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
NU-G,
NU-GA
model
LEV1
2000
Liquid level
control
*1
Pressure
differential
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 for NU-GA
model)
LEV3
Superheat
control
*4
*4. Superheat control: The amound of superheat that is calculated on the bypass inlet and outlet temperature (NU-G, NU-GA:
TH12,TH15, NU-GB: TH22, TH25) is controlled every minute so as to be within a certain range.
Pressure
differential
control
*2
Pressure
differential
control
*2
NU-G: 1000
NU-GA: 2000
60
NU-GB
model
LEV3a
Superheat
control
*4
Superheat
control
*4
60
60
60
60
Operation
mode
Cooling only
Cooling main
Heating only
Heating main
Defrost
Stopped
SVM2
OFF
OFF
Pressure
differential
control
*1
*1. Pressure differential control: The detected differential pressure (PS1 and P3) is controlled every minute so
as to be within a certain range.
Pressure
differential
control
*1
OFF
OFF
Содержание PUHY-P168
Страница 11: ... 2 ...
Страница 23: ... 14 ...
Страница 25: ... 16 ...
Страница 38: ... 29 II Restrictions ...
Страница 42: ... 33 II Restrictions ...
Страница 46: ... 37 II Restrictions ...
Страница 50: ... 41 II Restrictions ...
Страница 54: ... 45 II Restrictions ...
Страница 58: ... 49 II Restrictions ...
Страница 75: ... 66 ...
Страница 99: ... 90 III Outdoor Unit BC Controller Components 2 RELAY BOARD RELAY 4 board 3 RELAY BOARD RELAY 10 board ...
Страница 101: ... 92 ...
Страница 111: ... 102 ...
Страница 113: ... 104 ...
Страница 126: ... 117 VI Refrigerant Circuit 1 Refrigerant Circuit Figure 119 2 Principal Parts and Functions 126 ...
Страница 127: ... 118 ...
Страница 134: ... 125 VI Refrigerant Circuit 3 CMB P104 and P108NU GB sub TH25 TH22 LEV3a CP Solenoid valves Block Check valves Block ...
Страница 145: ... 136 ...
Страница 147: ... 138 ...
Страница 185: ... 176 ...
Страница 187: ... 178 ...
Страница 241: ... 232 ...
Страница 243: ... 234 ...
Страница 366: ... 357 IX Troubleshooting ...
Страница 367: ... 358 ...
Страница 368: ... 359 X LED monitor display on the outdoor unit board 1 How to read the LED on the service monitor 361 ...
Страница 369: ... 360 ...