JB machines all of the brass fittings at the factory in Aurora, Illinois using the highest level of brass, consisting of 65% copper and 35% zinc. This gives our brass fittings and access valves high tensile strength while resisting corrosion. Many import fittings use lower quality brass with lower copper content and higher failure rates. Our brass fittings may be used with copper, brass, aluminum, steel and plastic tube provided an acceptable flare could be generated with the material. Vacuum pressures of 5,000 psi can be handled depending on the size, material and conditions. Using a 4:1 safety factor, the following general rule is used: 3,000 psi to 1/4", 2,000 psi to 1/2" and 1,500 psi to 1". Long nuts are recommended when vibration is a factor. Tubing should be double flared in extreme applications to minimize flare thinning on over-tightening. Our brass fittings general comply with SAE, ASA, ASME and MS standards. However, when design make dimensions critical, please contact us at 800-323-0811. Heavy-duty ACR tube fittings generally conform to SAE, ASA and ARI standards for marine, hydraulic and refrigeration service. Long dry seal pipe threads minimize leakage and provide more clearance for tightening flare nuts. Shapes, elbows, tees, etc. are made from forged brass to maximize strength and eliminate cracks. Tube size listed are OD. To determine nominal size, subtract 1/8". Pipe sizes listed are standard J513 whenever possible. In some cases, slight deviations will occur when full compliance fittings are not available. Our tube fittings are make and brake, have good vibration resistance, economical, easy to assemble and are avialbe in a wide variety.

Features & Benefits

• 82 to 83% thermal efficient
• 50 to 60 Deg F rise range
• TCORE2® titanium stabilized aluminized steel heat exchanger
• Patented A single burner combustion system including a one-piece burner assembly
• Transformer for 24-volt controls
• Integrated circuit board with diagnostic indicator lights
• Multi-try direct ignition with timed lockout
• External gas connection
• Improved cabinet design with less visible hardware
• Sealed junction box for supply wiring
• Fully gasketed door panel with safety door switch

Specifications

• Type: Separated Combustion
• Voltage Rating: 115 Volt AC
• Current Rating: 11 Amp
• Power Rating: 1086 Watt
• Number of Phases: 1
• Capacity: 300000 BTU/Hour (Input), 249000 BTU/Hour (Output)
• Fan/Motor Type: Vibration/Noise Isolated Fan and Venter Motor
• Air Flow Rate: 3843 CFM
• Mounting: Ceiling Mount
• Application: Commercial/Industrial Heating
• Approval: CSA, CQS
Power Rating 1/2 HP (Open), 1/2 HP (Enclosed); Speed Rating 1050 RPM; Thermal Efficiency 83 Percent; Gas Connection Size 3/4 Inch; Vent Connection Size 6 Inch; Maximum Over Current Protection Rating 20 Amp; Discharge Air Temperature Rise 60 Deg F; Discharge Air Opening Area 4.79 Square Foot; Output Velocity 802 FPM; Sound Level 59 Decibel; Includes Relay