
JOHNSON CONTROLS
140
FORM 150.66-NM1 (708)
Unit Operation
FIG. 20 – INVERTER WIRING
LD11302
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
SYS 1
SYS 2
NOTE: Fans must run in the forward direction (AIR
↑
)
On chillers with the low ambient op-
tion, wire 127 is removed from TB7-3.
Wire 227 is removed from TB10-9 and
connected to TB10-3.
150A
L1
T1
150
151A
L2
T2
151
152A
L3
T3
152
CONDENSER
FAN NO. 1
SPEED
CONTR.
250A
L1
T1
250
251A
L2
T2
251
252A
L3
T3
252
CONDENSER
FAN NO. 2
SPEED
CONTR.
10M
Wiring
VFD wiring is simple and requires only 3-phase power
in, 3-phase power out, and a 2-wire signal from the
transducer. No start, stop, or other alternate power
requirements are needed to run the VFD. Fig’s 19 and
20 show the power and control wiring schematically as
well as the actual connections. The VFD controlled fan
will operate whenever the liquid line solenoid on the
respective system is energized.
FIG. 19 – INVERTER POWER WIRING SCHEMATIC
LD11301
Содержание YORK YCAL0041EC
Страница 12: ...JOHNSON CONTROLS 12 FORM 150 66 NM1 708 THIS PAGE INTENTIONALLY LEFT BLANK...
Страница 57: ...FORM 150 66 NM1 708 57 JOHNSON CONTROLS 6 ELEMENTARY DIAGRAM CON T LD13248 FIG 4 CON T CONTROL CIRCUIT DUAL...
Страница 59: ...FORM 150 66 NM1 708 59 JOHNSON CONTROLS 6 ELEMENTARY DIAGRAM CON T FIG 5 CON T CONTROL CIRCUIT DUAL LD13260...
Страница 167: ...FORM 150 66 NM1 708 167 JOHNSON CONTROLS NOTES...