York MILLENNIUM YCUL0045SC, Installation Operation & Maintenance

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YORK INTERNATIONAL
20
Control Panel
See electrical note 9
Power Panel
Micropanel
Field Unit Power
Supply
1L1
1L2 1L3
N-F Disconnect
Sw. OR Molded
Case Circuit
Bkr.
Field 120-1-50 Micropanel
Power Supply if control
transformer not supplied
GRD
CTB2
2
L
13
14
CTB1
Air Proving Switch
CTB3
To Field Installed Liquid Line Solenoid Valves
Electrical Notes and Legend located on Page 24.
FIG. 4 – OPTIONAL SINGLE POINT POWER WIRING
OPTIONAL SINGLE-POINT POWER WIRING
N-F DISC SW OR CIRC BKR (0045 - 0275)
LD04830
Installation
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.