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UBXC-UDXC-IOM (01-24) 1042980-0
INSTALLATION—CONTINUED
Electrical Connections—Continued
Figure 17. Supply Wiring Entrance and Control Connection Terminal Strip
Supply Wiring Connection
• Check the rating plate on the heater for the supply voltage and current requirements. A dedicated line voltage
supply with a disconnect switch should be run directly from the main electrical panel to the heater.
• All external wiring must be within approved conduit and have a minimum temperature rise rating of 140°F (60°C).
Conduit must be run so as not to interfere with the heater access panel.
• The supply wiring enters at the rear of the heater as shown in Figure 17 and connects to the disconnect toggle
switch.
• The circuit board (see Figure 18) is located inside on the bottom of the control compartment. The circuit board is
polarity sensitive. The circuit board is factory-wired, but it is advisable to check to ensure that the black wire is the
hot wire connected to terminal L1 and that the white wire is the neutral wire.
UBXC
UDXC
SUPPLY WIRING
ENTRANCE
SUPPLY WIRING
ENTRANCE
DISCONNECT
SWITCH
DISCONNECT
SWITCH
TERMINAL
STRIP
TERMINAL
STRIP
Figure 18. Circuit Board (DSI Control Module)
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