York ECO R-22 - Manual (Page 62)

YORK INTERNATIONAL 62
DUAL-POINT POWER SUPPLY WIRING
FIG. 3 – DUAL-POINT POWER SUPPLY WIRING
NOTES:
1. All field wiring must be provided through a field-supplied fused disconnect switch to the unit terminals (or optional molded
disconnect switch).
2. All electrical wiring must be made in accordance with all N.E.C. and/or local code requirements.
3. Minimum Circuit Ampacity (MCA) is based on U.L. Standard 1995, Section 36.14 (N.E.C. Section 440.34).
4. Maximum Dual Element Fuse size is based on U.L. Standard 1995, Section 36.15 (N.E.C. Section 440.22)
5. Use copper conductors only.
6. On units with an optional disconnect switch, the supplied disconnect switch is a “Disconnecting Means” as defined in the N.E.C. Section
100, and is intended for isolating the unit from the available power supply to perform maintenance and troubleshooting. This disconnect
switch is not intended to be a Load Break Device.
Field Power
Supply #2
Field Power
Supply #1
Earth
Ground
Earth
Ground
Line 3
Line 2
Line 1
Control Side
Wiring Terminal
Block
Line 3
Line 2
Line 1
Power Side
2L2 2L1 G
ND
2
L
3
1L1 1L2 G
ND
1
L
3
Electrical / Controls Box
TB2 TB1
LD06416
Power Wiring
(continued)