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UBX-UBZ-UDX-UDZ-IOM (07-23) 1034344-K
GENERAL INFORMATION—CONTINUED
Important Safety Information
Please read all information in this manual thoroughly and become familiar with the capabilities and use of your
appliance before attempting to operate or maintain this unit. Pay attention to all dangers, warnings, cautions, and
notes highlighted in this manual. Safety markings should not be ignored and are used frequently throughout to
designate a degree or level of seriousness.
DANGER: A danger statement describes a potentially hazardous situation that if not avoided, will result in severe
personal injury or death and/or property damage.
WARNING: A warning statement describes a potentially hazardous situation that if not avoided, can result in severe
personal injury and/or property damage.
CAUTION: A caution statement describes a potentially hazardous situation that if not avoided, can result in minor
or moderate personal injury and/or property damage.
NOTE: A note provides important information that should not be ignored.
⚠ WARNING ⚠
• Gas-fired appliances are not designed for use in hazardous atmospheres containing flammable
vapors or combustible dust, in atmospheres containing chlorinated or halogenated hydrocarbons,
or in applications with airborne silicone substances.
• Should overheating occur, or the gas supply control system fail to shut off the flow of gas, shut
off the manual gas valve to the unit before shutting off the electrical supply.
• Do not use this appliance if any part has been under water. Immediately call a qualified service
technician to inspect the appliance and replace any gas control that has been under water.
• Installation should be done by a qualified agency in accordance with these instructions. The
qualified service agency installing this heater is responsible for the installation.
• This appliance is not intended for use by persons with reduced physical, sensory, or mental
capabilities or lack of experience and knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the appliance.
⚠ CAUTION ⚠
To prevent damage to the unit or to its internal components, it is recommended that two wrenches
be used when loosening or tightening nuts. Do not over tighten!
Warranty
Refer to the limited warranty form in the literature bag provided with the unit. The warranty is void if:
• Wiring is not in accordance with the diagram furnished with the heater.
• The unit is installed without proper clearance to combustible materials.
• A fan model is connected to a duct system or if the air delivery system is modified.
Model Configuration
Table 2. Model Configuration
Model Configuration Model Configuration
UBX Standard power-vent blower-type UBZ Separated-combustion blower-type
UDX Standard power-vent fan-type UDZ Separated-combustion fan-type
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