Reznor UEZ Series Gas-Fired Unit Heater

Key Features and Safety

The Reznor UEZ units are equipped with a titanium-stabilized primary heat exchanger and a MacroChannel® secondary heat exchanger. Safety is paramount, with detailed instructions and warnings provided for installation and operation. Key safety considerations include:

• Adherence to all safety warnings to prevent injury or property damage.
• Installation and service by qualified personnel only.
• Understanding the procedures for handling gas leaks.
• Awareness of potential hazards associated with halogenated hydrocarbons.

Installation and Venting

The manual outlines comprehensive installation requirements, including:

• Heater location and mounting height recommendations.
• Clearances to combustible materials.
• Detailed venting and combustion air system requirements, including piping sizes and materials (PVC/CPVC, UL-1738 compliant systems).
• Condensate drain requirements, emphasizing the use of non-copper materials.
• Electrical connection guidelines.

Specific sections detail the installation of vent terminals and condensate drain systems for various unit sizes.

Operation and Maintenance

Guidance is provided for the proper operation of the unit, including pre-startup and post-startup checklists. The operation sequences and vent system testing are explained. Regular maintenance procedures are detailed to ensure optimal performance and longevity, covering:

• Burner and ignition system maintenance.
• Fan and motor assembly checks.
• Combination gas valve and pressure switch servicing.
• Heat exchanger cleaning.

Troubleshooting

A dedicated troubleshooting section assists in identifying and resolving common issues, including guidance for using the DSI Control Module.

For detailed specifications, dimensions, and technical data, please refer to the tables and figures within the full manual.