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Reznor UDX User Manual

Reznor UDX
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I-UBX-UBZ-UDX-UDZ (03-21) 1034344-0
Figure 10. Supply Wiring Entrance and Control Connection Terminal Strip
The circuit board (see Figure 11) is located inside on the bottom of the control compartment. The circuit board is
polarity sensitive. It is advisable to check the electrical supply ensure that the black wire is the hot wire and that
the white wire is the neutral wire. The hot wire must be connected to terminal L1 on the circuit board.
C
C
Rear View Separated
Combustion Model
Rear View Standard
Power Vent Model
NOTE: The size of
heater illustrated
has a vertical
terminal strip.
Some sizes have
a horizontal
terminal strip.
Figure 11. Circuit Board (DSI Control Module)
INSTALLATION—CONTINUED
Electrical Connections—Continued

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Reznor UDX Specifications

General IconGeneral
ModelUDX
CategoryHeater
Fuel TypeNatural Gas or Propane
Ignition SystemDirect Spark Ignition
InstallationHorizontal or Vertical
Heat Exchanger MaterialAluminized Steel
DimensionsVaries by model
WeightVaries by model
Heating Capacity30, 000 to 400, 000 BTU/hr
Efficiency83%
Vent TypeSeparated Combustion
Voltage115V
Control TypeThermostat
TypeGas-fired unit heater

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