PMGB0406B rev.1
19
You must make all electrical connections to air handlers with copper conductors. Direct connection of
aluminum wiring to air handlers is not approved.
If aluminum conductors are present, you must follow all applicable local and national codes when converting
from aluminum to copper conductors prior to connection to the air handler.
The chosen conductor and connections all must meet or exceed the amperage rating of the overcurrent
protector (service disconnect or fuse) in the circuit.
Existing aluminum wire within the structure must be sized correctly for the application. Refer to your local
codes to determine the correct wire size. Use Caution when sizing aluminum rather than copper conductors,
as aluminum conductors are rated for less current than copper conductors of the same size.
Figure 9. Line Power Connections
Power may be brought into the unit through the supply air end of the unit (top left when unit is in the up
À
ow
vertical position) or the left side panel. Use the hole appropriate to the unit’s orientation in each installation
to bring conduit from the disconnect. Terminate the power lead conduit at the electrical control box. Refer to
Tables 6 through 9 to determine proper wire sizing. Refer to local codes to determine the correct wire size. To
minimize air leakage, seal the wiring entry point at the outside of the unit.
9. Line Power Connections
(Ins)DX-Kit̲4e-rev1.indd C-19
(Ins)DX-Kit̲4e-rev1.indd C-19
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