Lennox CBX25UH Series Installation And Service Procedure page 17

Figure 26. Making Electrical Connections
CONNECT BLACK AND
YELLOW WIRES TO
FIELD-PROVIDED
CONDUCTORS.
CONNECT GROUND
WIRE TO GROUND
TERMINAL MARKED
"GND"
Page 17
208 VOLT CONVERSION
1. Disconnect all power supplies.
2. Remove the air handler access panel.
3. Using the wiring diagram located on the unit access
panel as a reference, move the 2 connected black
transformer leads from the 240 volt terminal on the
transformer to the 208 volt terminal on the transformer.
WARNING
Electrically ground air handler. Connect
ground wire to ground terminal marked
"GND".
Failure to do so can result in death or elec­
trical shock.