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Installation
GRD
2
120
GRD
2
220
GRD
2
181
GRD
2
281
CTB3
FIG. 7 – CTB3 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 volt-
ages are present inside the panel after disconnecting power, prior to working on
equipment.
22
CONTROL WIRING
GROUND
NEUTRAL
120VAC SIGNAL
GROUND
NEUTRAL
120VAC SIGNAL
GROUND
NEUTRAL
120VAC SIGNAL
GROUND
NEUTRAL
120VAC SIGNAL
}
LIQUID LINE SOLENOID VALVE 1
SYSTEM 1
}
LIQUID LINE SOLENOID VALVE 1
SYSTEM 2
(YCUL0125 - YCUL0275)
}
LIQUID LINE SOLENOID VALVE 2
SYSTEM 1
}
LIQUID LINE SOLENOID VALVE 2
SYSTEM 2
(YCUL0125 - YCUL0275)
LD04833
YORK INTERNATIONAL
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