These units are power vented to eliminate heat losses up the flue pipe. UDX and UBX models are available in 14 sizes ranging from 30,000 to 400,000 BTUH gas input and are approved for installation in the United States and Canada by ETL. UBX unit heaters feature a two-tone black and white powder-coated, scratch-resistant paint scheme. Each unit has clean rounded corners and edges with no visible screws or fasteners. Each size cabinet is easily suspended from 4 suspension points. The low voltage terminal strip on the outside of the cabinet makes connecting control wiring easy with no panels to remove. The addition of a terminal to the strip, along with the new design of the circuit board, allows for fan-only operation (without adding relays).
Note:For installations where dirt, dust, and other airborne contamination is presenet in the indoor envirmonet, it is recommended to use seperated combustion units (Model UBZ). These models use air from outside the space for combustion. This will help reduce the build up of contaminates on the burner which would affect the combustion process. Refer to the installation manuals for recommended frequency of maintenace and cleaning.
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