17
PN 20009722 REV E, [02/11/2015]
ELECTRICAL WIRING
Low-Voltage Electrical Wiring
Low-voltage interconnect wiring must be 18 AWG.
1.
Locate 24Vac control transformer in air handler.
Provides low-voltage control power to both air handler
and chilled water valve. Low-voltage interconnect
control wiring may vary depending on model selected.
2.
Refer to wiring diagram for low voltage connection to
appropriate terminals.
3.
Replace control box cover with wiring diagram facing in
after making all connections. Secure with four screws.
Units rated 208/230Vac, primary side of transformer are
factory wired for 230Vac.
Change transformer tap from orange to red for 208V power
supply. Refer to wiring diagram located on inside control
box cover. See Figure 27.
Figure 26 - Low-Voltage Interconnections -
IR Handheld Remote Controls with
Optonal Wall Thermostat
OPTIONAL
TRANSFORMER
120/240V
TO FIELD
SUPPLIED WIRING
IN ACCORDANCE
WITH NEC
AND LOCAL CODES
Figure 25 - Low-Voltage Interconnections -
Wall Mounted Remote Thermostat
Figure 27 - Wiring Diagram Location
Figure 28 - Optional Transformer Wiring
