Fig. 22 — 208/230-v ECM Motor with DDC Ready Controls
LEGEND
CBC — Control Box Connection
DDC — Direct Digital Controls
DISC — Disconnect Switch
EC — Electronically Commutated
ECM — Electronically Commutated Motor
ESP — External Static Pressure
FR — Fan Relay
FU — Fuse
GND — Ground
SW — Switch
TRAN — Transformer
Harness Connection
Connection Point Splice
Splice Terminal Connection
Component Tie Point
Optional Wiring
Factory Wiring
Chassis Ground
Earth Ground
NOTES:
1. Make electrical installation in accordance with job diagram, and in
compliance with national and local electrical codes.
2. Low limit thermostat (LLT) is installed on all units with water coils.
3. Wire YEL/EC5 factory connected to LOW. Positions MED, HIGH, and
MAX are for field use with increased ESP.
4. Transformers shown wired for 240-v; however, transformers are nor-
mally factory wired to match voltage listed on the unit nameplate.
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