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JOHNSON CONTROLS
27
FORM 150.63-NM6 (1020)
1
It is possible that multiple sources of power can be supplying the unit power panel. To pre-
vent serious injury or death, the technician should verify that NO LETHAL VOLTAGES are
present inside the panel AFTER disconnecting power, PRIOR to working on equipment.
CONTROL WIRING
LD04288
FIG. 5
– CTB1 FIELD CONTROL WIRING (CTB1 LOCATED BELOW MICROPROCESSOR BOARD)
LD04376
*YCUL0125 - YCUL0275
CTB1 – DISCHARGE AIR TEMPERATURE CONTROL
21
13
20
13
14
13
AIR PROVING SWITCH
REMOTE START/STOP
CONTACTS
PWM INPUT
LOAD LIMIT INPUT
CTB1 – SUCTION PRESSURE CONTROL
13
20
13
16
14
13
AIR PROVING SWITCH
PWM INPUT
SYS 1 ZONE T'STAT
LOAD LIMIT INPUT
21
* SYS 2 ZONE T'STAT
Summary of Contents for YCUL0045
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Page 141: ...JOHNSON CONTROLS 141 FORM 150 63 NM6 1020 4 LD08801...
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