Make Electrical Connections
240-Volt or 120 Volt Installations
1. Disconnect all power supplies.
2. Remove the MX Series Air Handler access panel.
3. Route the field supply wires to the MX Series Air
Handler electrical connection box.
4. Using UL listed wire nuts; for 240 Volts connect the
field supply wires to the MX Series Air Handler (black
to black and yellow to yellow). For 120 Volts connect
the field supply wires to the MX Series Air Handler
(black to black and white to white).
5. Connect ground wire to ground terminal marked
“GND.”
6. Replace the MX Series Air Handler access panel.
208-Volt Conversion
1. Disconnect all power supplies.
2. Remove the MX Series Air Handler access panel.
3. Move the 2 connected black transformer leads from the
240-volt terminal on the transformer to the 208-volt
terminal on the transformer. See “Wiring Diagram –
Electric Heat.”
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