Garage Standard Combustion Unit Heaters
LF25Introducing a high-performance horizontal natural gas unit heater/duct furnace, designed for reliable heating in a range of professional environments. This unit offers a heating capacity input ranging from 60,000 to 150,000 BTU/hr, with an impressive 83% steady-state efficiency to ensure consistent and efficient warmth. Built with an aluminized steel heat exchanger for enhanced durability, it delivers 1950 CFM of airflow to quickly and effectively heat large spaces. The unit is housed in a sturdy, painted steel cabinet, with dimensions of 42-1/4″ in length, 36″ in width, and 26-1/2″ in depth, making it suitable for a variety of commercial and industrial applications. It also includes comprehensive documentation, such as installation manuals, parts lists, and product specifications, to support easy setup and reliable operation.
Starting As Low As
$64/month
Heating
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Experience superior heating efficiency with our versatile Radiant Garage Heater, designed for optimal performance in a variety of settings. With a high thermal efficiency of up to 83%, this unit provides a broad heat capacity range from 30,000 to 400,000 Btuh, making it ideal for both compact and standard-sized environments.
Key Features:
High Thermal Efficiency: Achieve up to 83% efficiency, ensuring cost-effective heating.
Two-Stage Heating: Standard on models from 250,000 to 400,000 BTU/hr, offering improved control over heating levels.
Durable Tubular Heat Exchanger: Built for long-lasting performance, maximizing heat output while minimizing wear and tear.
Curved Design: Optimizes heat transfer by exposing more surface area to the air stream for enhanced warmth distribution.
Reduced Air Resistance: Rounded surfaces reduce metallic stress and promote quieter operation by minimizing air turbulence.
Low Maintenance: Features an in-shot burner assembly and a no-maintenance, lubricated blower motor, making upkeep simple and hassle-free.
Flexible Venting Options: Suitable for both horizontal and vertical installation, providing versatility to meet various space requirements.
Reliable Warranty: Includes a 15-year limited warranty on stainless steel heat exchangers, 10-year warranty on aluminized heat exchangers, and a 1-year warranty on covered components.
Perfect for garages and non-confined living spaces, our Radiant Garage Heater delivers reliable, efficient heating backed by rigorous factory testing and comprehensive warranty coverage. Its easy installation, combined with robust construction, ensures long-term performance and comfort.
For more details, explore the product specifications and benefits at Allied Commercial.
Specification
Performance | LF25-30A | LF25-45A | LF25-60A | LF25-75A | LF25-90A | LF25-105A |
---|---|---|---|---|---|---|
Heating Capacity Input (Btuh) | 30,000 | 45,000 | 60,000 | 75,000 | 90,000 | 105,000 |
Heating Capacity Output (Btuh – Natural) | 25,020 | 37,665 | 50,220 | 62,550 | 75,420 | 87,675 |
Steady State Efficiency (Natural) | 83.4% | 83.7% | 83.7% | 83.4% | 83.8% | 83.5% |
Temperature Rise (F) | 37 | 52 | 47 | 56 | 43 | 54 |
Connection Table
Connections | LF25-30A | LF25-45A | LF25-60A | LF25-75A | LF25-90A | LF25-105A |
---|---|---|---|---|---|---|
Flue Size (round) | 4 | 4 | 4 | 4 | 4 | 4 |
Gas Piping Size (in.) | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 |
Fan Table:
Fan Data | LF25-30A | LF25-45A | LF25-60A | LF25-75A | LF25-90A | LF25-105A |
---|---|---|---|---|---|---|
Number of Fans | 1 | 1 | 1 | 1 | 1 | 1 |
Fan Diameter (in.) | 10 | 10 | 14 | 14 | 16 | 16 |
Number of Blades | 4 | 4 | 4 | 4 | 4 | 4 |
Motor Output (hp) | 1/25 | 1/25 | 1/15 | 1/15 | 1/10 | 1/10 |
rpm | 1550 | 1550 | 1075 | 1075 | 1075 | 1075 |
Air Volume (cfm) | 625 | 665 | 1000 | 1050 | 1600 | 1500 |
Air Throw at 8 ft. Mounting Height (ft.) | 27 | 29 | 34 | 41 | 46 | 43 |
Weight Data Table:
Weight Data | LF25-30A | LF25-45A | LF25-60A | LF25-75A | LF25-90A | LF25-105A |
---|---|---|---|---|---|---|
Net Weight (lbs.) | 55 | 60 | 85 | 90 | 115 | 120 |
Shipping Weight (lbs.) | 60 | 65 | 90 | 95 | 120 | 125 |
Electrical Data
Electrical Data | LF25-30A | LF25-45A | LF25-60A | LF25-75A | LF25-90A | LF25-105A |
---|---|---|---|---|---|---|
Fan Motor Full Load Amps | 2.0 | 2.0 | 2.0 | 2.0 | 3.0 | 3.0 |
Maximum Overcurrent Protection (MOCP) | 15 | 15 | 15 | 15 | 15 | 15 |
High Altitude Pressure Switch Kits:
High Altitude Pressure Switch Kits | LF25-30A | LF25-45A | LF25-60A | LF25-75A | LF25-90A | LF25-105A |
---|---|---|---|---|---|---|
Factory | Factory | Factory | Factory | |||
3000-5000 ft. | Factory | Factory | Factory | 22K44 | 2001-4000 ft. | 22K44 |
5001-6000 ft. | Factory | Factory | 22L26 | 22K44 | 4001-6000 ft. | 22L26 |
6001-9000 ft. | 22L27 | 22L27 | 22L26 | 22L27 | 6001-7000 ft. | 22L27 |
9001-10,000 ft. | 22L27 | 22L27 | 22L28 | 22L27 | 7001-10,000 ft. | 22L27 |
Optional Accessories
Optional Accessories – Gas Heat | US | Canada |
---|---|---|
Natural Gas to LPG/Propane Conversion Kits (0 – 5000 ft.) | 18L11 | 18L11 |
Natural Gas to LPG/Propane Conversion Kits (5001 – 8000 ft.) | 19A10 | 19A12 |
Natural Gas to LPG/Propane Conversion Kits (8001 – 10,000 ft.) | 19A11 |
High Altitude Conversion Kits
High Altitude Conversion Kits – Natural Gas | US | Canada |
---|---|---|
5001 – 7000 ft. | 19A17 | 19A17 |
7001 – 10,000 ft. | 19A18 |
Installation Clearance Table
Installation Clearances | in. | mm |
---|---|---|
Top | 1 | 25 |
Side opposite control box/access panel | 1 | 25 |
Control Box/Access Panel Side | 24 | 610 |
Back | 18 | 457 |
Bottom | 1 | 1 |
Flue | 6 | 152 |
Maximum Mounting Heights Table
Maximum Mounting Height | ft. | m |
---|---|---|
LF25-30-45-60-75 | 10 | 3 |
LF25-90-105 | 12 | 3.7 |
Horizontal Venting Length Table
No. of Elbows | Maximum Length (feet) of Straight Vent Pipe |
---|---|
1 | 25 |
2 | 20 |
3 | 15 |
4 | 10 |
5 | 5 |
Vent Adaptor Kits:
Vent Adaptor Kits (For Retro-Fit Installations) | Unit Heater Description | Catalog No. |
---|---|---|
LF25-45A Combustion Air Inducer Mounting Plate Kit | Required for 4 inch to 3 inch vent pipe applications | 19U97 |
LF25-30A, LF25-45A Vent Adaptor Kit (Upslope) | 4 inch unit flue pipe to 3 inch Category III vent pipe | 19V95 |
LF25-30A, LF25-45A Vent Adaptor Kit (Downslope) | 4 inch unit flue pipe to 3 inch Category III vent pipe | 19V96 |
Horizontal Vent Kits and Elbow Table
Required for Residential Horizontal Venting Applications | Unit Heater Model No. | Vent Diameter (in.) | Upslope Vent Kit | Downslope Vent Kit | 45 Elbow | 90 Elbow | 1 Minimum Vent Length (ft.) |
---|---|---|---|---|---|---|---|
LF25-30A, LF25-45A, LF25-60A, LF25-75A, LF25-90A, LF25-105A | 4 | 75W63 | 75W67 | 87W80 (Optional) | 75W71 (Optional) | 5 |
Straight Vent Pipe for Horizontal Venting Table:
Straight Vent Pipe – For Horizontal Venting | Unit Heater Model No. | Vent Diameter (in.) | Length (in.) | Catalog No. |
---|---|---|---|---|
LF25-30A, LF25-45A, LF25-60A, LF25-75A, LF25-90A, LF25-105A | 4 | 6 | 75W77 | |
LF25-30A, LF25-45A, LF25-60A, LF25-75A, LF25-90A, LF25-105A | 4 | 12 | 75W78 | |
LF25-30A, LF25-45A, LF25-60A, LF25-75A, LF25-90A, LF25-105A | 4 | 36 | 75W79 |