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505059M 0511
protection, minimum circuit ampacity, as well as
operating voltage.
S
The power supply must be sized and protected
according to the specifications supplied on the
product.
S
This air handler is factory−configured for 240 volt,
single phase, 60 cycles. For 208−volt applications, see
208 Volt Conversion" later in this section.
S
For optional field-installed electric heat applications,
refer to the instructions provided with the accessory
for proper installation.
WARNING
USE COPPER CONDUCTORS ONLY
1. Disconnect all power supplies.
2. Remove the air handler access panel.
3. Route the field supply wires to the air handler electrical
connection box.
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.
4. Use UL−listed wire nuts to connect the field supply
conductors to the unit black and yellow leads, and the
ground wire to ground terminal marked GND."
5. Replace the air handler access panel.
GND
CONNECT BLACK
TO BLACK
CONNECT UNIT ’S
YELLOW CONDUC-
TOR TO WHITE
FIELD SUPPLY
CONDUCTOR
CONNECT
GROUND WIRE TO
GROUND TERMI-
NAL MARKED GND"
Figure 12. Making Electrical Connections
208 VOLT CONVERSION
WARNING
Electric shock hazard! − Disconnect all
power supplies before servicing.
Replace all parts and panels before op-
erating. Failure to do so can result in death
or electrical shock.
1. Disconnect all power supplies.
2. Remove the air handler access panel.
3. Using the wiring diagram in figure 13 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.
