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JOHNSON CONTROLS
174
FORM 150.67-NM2 (209)
Unit Operation
TB3
TB1
TB2
TO PANEL 10 M
TO FAN #2 (EXIS TING HARNESS)
TO MICROBOARD (P7)
251
250
252
250A
251A
252A
WHT
BLK
TB3
TB1
TB2
TO PANEL 10 M
TO FAN #2 (EXIS TING HARNESS)
TO MICROBOARD (P7)
251
250
252
250A
251A
252A
WHT
BLK
TB3
TB1
TB2
TO PANEL 7 M
TO FAN #1 (EXIS TING HARNESS)
TO MICROBOARD (P4)
151
150
152
150A
151A
152A
WHT
BLK
TB3
TB1
TB2
TB3
TB1
TB2
TO PANEL 7 M
TO FAN #1 (EXIS TING HARNESS)
TO MICROBOARD (P4)
151
150
152
150A
151A
152A
WHT
BLK
FIG. 35
– INVERTER WIRING
LD11302
FAN STAGE
ON
OFF
CONTACTOR
MICROBOARD
FAN #
SYS 1
SYS 2
SYS 1
SYS 2
SYS 1
SYS 2
1:
VFD Control
(1 Fan
Variable Speed)
Fan Speed
Is A Function Of
Discharge
Pressure.
When The Liquid
Line Solenoid
Is Energized,
Speed Increases
With Pressure
FAN Will Turn
Off or Turn Very
Slowly When
Pressure Drops
Below 260 PSIG.
7M
10M
TB7-3
TB10-9
1
2
2:
1 Fan VFD
Control
2nd Fan
Full Speed
Under Contactor
Control
425 PSIG,
Both Fans
Will Be Running
Full Speed
Discharge
Pressure
< 260 PSIG
(Pressure Is
< Fan Control
ON Pressure of
425 PSIG Minus
Fan Differential
Pressure of
125 PSIG = 300
PSIG)
7M
&
8M
10M
&
11M
TB7-3
and
TB7-10
TB10-9
and
TB10-10
1
&
3
2
&
4
TABLE 25 –
YCAL0043-0066 VFD LOW AMBIENT OPTION – CONDENSER FAN CONTROL OPERATION
Содержание YCAL0019
Страница 55: ...FORM 150 67 NM2 209 55 JOHNSON CONTROLS 5 5 ELEMENTARY WIRING DIAGRAM CON T LD12699D...
Страница 57: ...FORM 150 67 NM2 209 57 JOHNSON CONTROLS 5 5 ELEMENTARY WIRING DIAGRAM CON T LD12693C...
Страница 59: ...FORM 150 67 NM2 209 59 JOHNSON CONTROLS 5 5 ELEMENTARY WIRING DIAGRAM CON T LD 12198...
Страница 61: ...FORM 150 67 NM2 209 61 JOHNSON CONTROLS 5 5 LD12702 ELEMENTARY WIRING DIAGRAM CON T...
Страница 63: ...FORM 150 67 NM2 209 63 JOHNSON CONTROLS 5 5 LD12696 ELEMENTARY WIRING DIAGRAM CON T...
Страница 65: ...FORM 150 67 NM2 209 65 JOHNSON CONTROLS 5 5 CONNECTION WIRING DIAGRAM CON T LD12703B...
Страница 67: ...FORM 150 67 NM2 209 67 JOHNSON CONTROLS 5 5 CONNECTION WIRING DIAGRAM CON T LD12697B...