1. Uvod
The Reznor UDXC-45 is a 45,000 BTU natural gas unit heater designed for indoor use in various spaces, including commercial, industrial, and residential garages, workshops, and warehouses. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your heater. Please read all instructions thoroughly before proceeding with installation or operation.
2. Sigurnosne informacije
UPOZORENJE: Nepravilna instalacija, podešavanje, preinake, servis ili održavanje mogu uzrokovati oštećenje imovine, ozljede ili smrt. Prije instaliranja ili servisiranja ove opreme temeljito pročitajte upute za instalaciju, rad i održavanje.
- Snabdijevanje plinom: Ensure the gas supply is turned off before any installation or maintenance. All gas connections must be leak-tested.
- ventilacija: Proper venting is critical to prevent carbon monoxide poisoning. Ensure the vertical Category 1 B-vent kit is installed correctly and maintained.
- Električni priključci: All electrical wiring must comply with local codes and be performed by a qualified electrician. Disconnect power before servicing.
- Dozvole: Održavajte dovoljne udaljenosti od zapaljivih materijala kako je navedeno u uputama za instalaciju.
- Profesionalna instalacija: Installation and service should be performed by a qualified installer, service agency, or gas supplier.
3. Proizvod je gotovview
The Reznor UDXC-45 unit heater is engineered for durability and efficient heating. It features a robust design suitable for demanding environments.

Slika: Front view of the Reznor UDXC-45 unit heater highlighting standard features such as 83% AFUE efficiency and TCORE2 heat exchanger.
Ključne karakteristike:
- Visoke performanse: Rated for 45,000 BTU with an 83% thermal efficiency rating.
- Izdržljiva konstrukcija: Sadrži TCORE2 izmjenjivač topline od titanom stabiliziranog čelika s aluminijskim premazom.
- Napredno paljenje: Patented single-burner combustion with multi-try direct spark ignition and time lockout.
- Korisničko sučelje: Integrated circuit board with a 7-segment display for troubleshooting and status-indicating LED.
- tihi rad: Low noise operation with vibration-isolated fan and venter motors.
- Fleksibilnost instalacije: Držači s navojnim maticama na četiri točke ovjesa za montažu na strop ili zid (montažni pribor se prodaje zasebno).
- Pristup za održavanje: Hinged access door panel with a quarter-turn latch and external gas connection for ease of maintenance.

Image: Visual representation of the heater's attributes including scratch resistance, durable build, modern design, and quiet operation.
4. Specifikacije
Detailed technical specifications for the Reznor UDXC-45 unit heater.

Image: Diagram illustrating the physical dimensions of the 45,000 BTU Reznor UDXC-45 heater.
| Specifikacija | Vrijednost |
|---|---|
| Broj modela | UDXC-45 |
| Izlaz toplote | 45,000 britanskih termalnih jedinica (BTU) |
| Termička efikasnost | 83% |
| Vrsta goriva | Prirodni gas |
| Metoda grijanja | Forced Air |
| Unutrašnja/vanjska upotreba | Indoor |
| Form Factor | Plafonski |
| Dimenzije proizvoda (D x Š x V) | 29.75" x 27" x 13.75" |
| Broj brzina | 2 |
5. Instalacija
The Reznor UDXC-45 is designed for ceiling or wall mounting. A vertical Category 1 double wall B-vent kit is included for roof venting. Consult a qualified professional for installation to ensure compliance with all local codes and safety standards.
Montaža:
- The unit features threaded-nut retainers at four suspension points for secure mounting.
- Mounting hardware is sold separately and should be selected based on the specific installation environment and structural requirements.
- Ensure the mounting location can support the weight of the unit and provides adequate clearance from combustible surfaces.

Image: A Reznor UDXC-45 heater mounted on a ceiling, demonstrating a typical installation in a garage or workshop setting.
Odzračivanje:
The included vertical Category 1 double wall B-vent kit is essential for safely expelling combustion byproducts. Follow the kit's instructions and local codes for proper installation.
- The kit typically includes components such as a Reznor CCI Vent Cap, Draft Hood Connector, Straight Pipes (12" and 24" lengths), Adjustable Elbows (60° and 90°), Roof Flashing, and a Storm Collar.
- Ensure all vent connections are sealed properly to prevent leaks.

Image: Various components of a 4-inch diameter double wall B-vent kit, used for vertical venting applications.
6. Operacija
Once properly installed and connected to the natural gas and electrical supplies, the Reznor UDXC-45 heater is ready for operation. This unit utilizes forced air for efficient heat distribution.
Pokretanje grijača:
- Provjerite je li ventil za dovod plina u grijač otvoren.
- Uključite struju na jedinicu.
- Podesite termostat na željenu temperaturu. Grijač će pokrenuti sekvencu paljenja.
- Observe the status-indicating LED and 7-segment display for operational status.
Cirkulacija zraka:
The low static pressure axial fan and power venting system are designed to reduce heat loss and ensure effective air circulation throughout the heated space.

Image: A diagram showing the air circulation patterns generated by a unit heater, indicating effective heat distribution.
7. Održavanje
Regular maintenance ensures the longevity and efficient operation of your Reznor UDXC-45 heater. Always disconnect electrical power and turn off the gas supply before performing any maintenance.
- Godišnja inspekcija: Have a qualified service technician inspect the heater annually, including the heat exchanger, burner, ignition system, and venting.
- čišćenje: Keep the area around the heater clean and free of obstructions. Periodically clean the fan blades and motor to prevent dust buildup.
- Provjera ventilacijskog sistema: Inspect the vent system for any signs of corrosion, blockages, or leaks. Ensure the vent cap is clear.
- Izmjenjivač topline: The TCORE2 titanium-stabilized aluminized steel heat exchanger is designed for durability, but should be inspected for any signs of damage or wear during annual service.
8. Otkrivanje problema
The Reznor UDXC-45 is equipped with an integrated circuit board and a 7-segment display for diagnostics, along with a status-indicating LED to assist in troubleshooting. Refer to the specific error codes displayed on the 7-segment display for detailed guidance.
Uobičajeni problemi:
- Bez vrućine: Check if the thermostat is set correctly, the gas supply is open, and the electrical power is on. Look for error codes on the display.
- Pilot Light/Ignition Failure: The multi-try direct spark ignition system will attempt to light the burner multiple times. If it fails, an error code will be displayed. This may indicate a gas supply issue or a problem with the ignition components.
- Neobični zvukovi: While designed for quiet operation, any new or unusual noises should be investigated. This could indicate a fan issue or other mechanical problem.
- Heater Cycles On/Off Frequently: This could be due to an improperly sized unit, thermostat placement, or airflow restrictions.
Za uporne probleme ili složene probleme, obratite se kvalificiranom servisnom tehničaru.
9. Garancija i podrška
For warranty information, please refer to the documentation provided with your Reznor UDXC-45 unit heater or contact the manufacturer directly. Support for this product may also be available through the seller, 1HVAC. Keep your purchase receipt and model number (UDXC-45) handy when contacting support.





