1. Introduction and Overview
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Reznor UDXC-150 natural gas unit heater. The UDXC-150 is a 150,000 BTU commercial-grade forced air heater designed for various indoor spaces such as garages, workshops, and warehouses. It features an 83% thermal efficiency rating and is built for durability and quiet operation.
2. Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.
General Safety Precautions:
- Installation and service must be performed by a qualified installer, service agency, or gas supplier.
- Ensure adequate ventilation is provided as per local codes and manufacturer instructions.
- Maintain proper clearances from combustible materials as specified in the installation guide.
- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
- Never obstruct the air intake or exhaust vents.
- Regularly inspect the unit for any signs of damage or malfunction.
3. Product Features
The Reznor UDXC-150 unit heater incorporates advanced technology for reliable and efficient heating:
- High Thermal Efficiency: Achieves an 83% AFUE (Annual Fuel Utilization Efficiency) rating.
- Durable Heat Exchanger: Features a TCORE2 titanium-stabilized aluminized steel heat exchanger for extended lifespan.
- Advanced Ignition: Equipped with multi-try direct spark ignition with time lockout.
- Quiet Operation: Designed for low noise with vibration-isolated fan and venter motors.
- Diagnostic Display: Includes a 7-segment display board for simple troubleshooting and a status-indicating LED light.
- Flexible Mounting: Offers 2- and 4-point suspension options for ceiling or wall mounting (mounting hardware sold separately).
- Easy Maintenance: External gas connection for simplified service access.
- Safety Certified: ETL Approved.
- Heating Flexibility: Single-burner design with two BTU outputs for varying temperature needs.
This image displays the Reznor UDXC-150 unit heater and highlights its key standard features, including 83% AFUE efficiency, multi-try direct spark ignition with time lockout, a TCORE2 titanium-stabilized aluminized steel heat exchanger, and low noise operation due to vibration-isolated fan and venter motors.
This image shows the Reznor UDXC-150 unit heater and details further standard features such as a status-indicating LED light, a 7-segment display board for troubleshooting, options for 2- and 4-point suspension, an external gas connection for ease of maintenance, and ETL approval.
4. Package Contents
Your Reznor UDXC-150 unit heater package includes the following components:
- Reznor UDXC-150 Natural Gas Unit Heater
- Vertical Category 1 Double Wall B-Vent Kit (for venting out of a roof)
Vertical B-Vent Kit Components:
- 1x Reznor CCI Vent Cap
- 1x Draft Hood Connector
- 2x 12" Length Straight Pipe (5" diameter)
- 2x 24" Length Straight Pipe (5" diameter)
- 2x 60° Adjustable Elbow (5" diameter)
- 1x 90° Adjustable Elbow (5" diameter)
- 1x Roof Flashing (up to 5/12 Pitch)
- 1x 5" Diameter Storm Collar
This image displays the various components included in a 5-inch diameter double wall B-vent kit for vertical Category I venting. The kit includes a Reznor CCI Vent Cap, a Draft Hood Connector, 12-inch and 24-inch straight pipes, 60-degree and 90-degree adjustable elbows, roof flashing, and a storm collar.
5. Setup and Installation
Installation of the Reznor UDXC-150 unit heater requires adherence to all local codes and regulations, as well as the detailed instructions provided in the full installation manual. It is strongly recommended that installation be performed by a qualified and licensed professional.
Key Installation Considerations:
- Mounting: The unit can be ceiling-mounted or wall-mounted using appropriate suspension points. Mounting hardware is sold separately. Ensure the mounting structure can safely support the weight of the unit.
- Venting: This model includes a vertical Category 1 double wall B-vent kit. Proper venting is crucial for safety and efficiency. Follow all instructions for vent pipe assembly and roof flashing.
- Gas Connection: Connect the unit to a natural gas supply line. All gas connections must be leak-tested by a qualified professional. The external gas connection is designed for ease of access.
- Electrical Connection: The unit requires a 24V electrical connection. Ensure all wiring is done according to electrical codes and the manufacturer's specifications. The unit includes an external terminal strip for 24V wiring and a built-in enhanced disconnect switch.
- Clearances: Maintain specified clearances from combustible materials around the heater and vent system.
This image shows the Reznor UDXC-150 unit heater installed on a ceiling, emphasizing its compact and durable design. It highlights its suitability for larger commercial garages, warehouses, and industrial workspaces, and its capability for ceiling or wall mounting with multiple venting options.
This image highlights the simplified installation and advanced features of the Reznor UDXC-150 unit heater. It points out the updated cabinet structure with a removable front face, a hinged access door panel with a quarter-turn latch, threaded-nut retainers for ceiling or wall mounting, an enhanced integrated circuit board with a 7-segment display, a built-in enhanced disconnect switch, a status-indicating LED, and an external terminal strip for 24V wiring.
6. Operating Instructions
Once properly installed and connected, the Reznor UDXC-150 unit heater is designed for straightforward operation, typically controlled by an external thermostat (not included).
Basic Operation:
- Power On: Ensure the main power supply to the unit is switched on.
- Thermostat Control: Set your external thermostat to the desired temperature. The heater will automatically cycle on and off to maintain the set temperature.
- Heat Output: The single-burner design offers two BTU outputs. The unit will automatically adjust between high fire for colder conditions and low fire for milder temperatures to ensure efficient heating.
- Air Circulation: The low static pressure axial fan provides effective air circulation, distributing heat evenly throughout the space.
- Status Indicator: Observe the status-indicating LED and the 7-segment display board for operational status and any diagnostic codes.
For detailed startup procedures and advanced settings, refer to the complete operating manual.
7. Maintenance
Regular maintenance ensures the longevity and efficient operation of your Reznor UDXC-150 unit heater. All maintenance should be performed by a qualified service technician.
Recommended Maintenance Schedule:
- Annual Inspection: Have a qualified technician inspect the heat exchanger, burner, ignition system, fan motor, and all gas and electrical connections annually.
- Cleaning: Ensure the fan blades and heat exchanger fins are free from dust and debris to maintain optimal airflow and efficiency.
- Vent System Check: Inspect the entire vent system for any blockages, leaks, or corrosion.
- Safety Devices: Verify the proper operation of all safety controls and limit switches.
Always disconnect power to the unit before performing any maintenance or cleaning.
8. Troubleshooting
The Reznor UDXC-150 is equipped with diagnostic features to assist in identifying operational issues. Refer to the full service manual for detailed troubleshooting steps.
Common Indicators and Actions:
- No Heat/Unit Not Starting: Check power supply, gas supply, and thermostat settings. Consult the 7-segment display for error codes.
- Unusual Noises: Could indicate fan imbalance, motor issues, or debris. Disconnect power and inspect. If persistent, contact a technician.
- Status LED: The status-indicating LED provides a quick visual cue of the unit's operational state. Refer to the manual for specific flash codes.
- 7-Segment Display: This display will show diagnostic codes that pinpoint specific issues. Note the code and consult the troubleshooting section of the detailed manual.
If you are unable to resolve an issue, contact a qualified HVAC service technician.
9. Specifications
| Feature | Detail |
|---|---|
| Brand | Reznor (Distributed by 1HVAC) |
| Model Number | UDXC-150 |
| BTU Rating | 150,000 BTU |
| Thermal Efficiency | 83% AFUE |
| Fuel Type | Natural Gas |
| Heating Method | Forced Air |
| Form Factor | Mounted (Ceiling/Wall) |
| Indoor/Outdoor Usage | Indoor |
| Product Dimensions (D x W x H) | 48.44" x 38.19" x 20.13" |
| Number of Speeds | 2 |
| Vent Kit Included | Vertical Category 1 Double Wall B-Vent Kit (5-inch diameter) |
This image illustrates the physical dimensions of the 150,000 BTU Reznor UDXC-150 unit heater, showing its height of 20 1/8 inches, width of 38 3/16 inches, and depth of 48 7/16 inches.
10. Warranty and Support
For specific warranty information regarding your Reznor UDXC-150 unit heater, please refer to the documentation included with your purchase or contact the seller directly. Warranty terms typically cover manufacturing defects and may vary.
For technical support, service inquiries, or to purchase replacement parts, please contact 1HVAC, the distributor of this product. You can visit the 1HVAC Store for more information.