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AIR PROVING SWITCH
13
14
13
20
13
LOAD LIMIT INPUT
21
CTB1 – DISCHARGE AIR TEMPERATURE CONTROL
FIG. 5 – CTB1 FIELD CONTROL WIRING
**
CTB2
FIG. 6 – CTB2 FIELD WIRING
It is possible that multiple sources of power can be supplying the unit power panel. To prevent
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.
YORK INTERNATIONAL
CONTROL WIRING
REMOTE START/STOP
CONTACTS
PWM INPUT
LD04288
(NEUTRAL)
(HOT)
AIR PROVING SWITCH
13
14
16
13
20
13
LOAD LIMIT INPUT
21
*YCUL0125 - YCUL0275
CTB1 – SUCTION PRESSURE CONTROL
GROUND
120VAC POWER
REMOTE EMERGENCY CUTOFF
EVAP. BLOWER START CONTACTS
SYSTEM RUN STATUS CONTACTS
SYS. 1
SYSTEM RUN STATUS CONTACTS
SYS. 2 (YCUL0125 - YCUL0275)
SYS. 1 ALARM STATUS CONTACTS
SYS. 2 ALARM STATUS CONTACTS
(YCUL0125 - YCUL0275)
** Remove Factory Installed Jumper When Field Wiring
Remote Emergency Cutoff Contacts
FORM 150.63-NM2
SYS 1 ZONE T'STAT
* SYS 2 ZONE T'STAT
PWM INPUT
LD04831
LD04832
21
1
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