Cold Weather Catalog - Chromalox Precision Heat and Control

ComfortKUHHorizontalBlower HeaterFORCED AIR• 20 - 45 kW• 68,000 - 153,000 Btuh• 208, 240, 277, 480 and 600 Volt• 1 or 3 Phase• Wall or Ceiling MountedConfigurationsDescriptionType KUH self-contained heater provides quiet,reliable fan-forced heating in all types of commercialand industrial applications.Applications• Shipping and Receiving Areas• Pump Houses• Power Generating Stations• Aircraft Hangars• Factories• Warehouses• GaragesConstructionDie Formed Cabinet — Heavy 18 gauge steel,phosphate undercoated for corrosion resistanceand fi nished in gray polyester powdercoat.Louvers — Individually adjustable louversdirect air fl ow up or down as needed.Fintube Heating Elements have corrosionresistant steel fi ns that are furnace brazed tothe tubular heating element to assure long lifeand superior heat transfer.Refer toWR-80, RTC, WR-90,WT-121, WT-122 and WTL-121in the Controls section.Fan Motor — Totally enclosed fan motor israted for continuous duty with built-in thermalcutout and operates on same voltage as theheating circuit.Dynamically Balanced Fan is attached withrubber vibration insulators for smooth, quietoperation. Blade pitch is carefully selected sothat the volume of air moved results in theoptimum discharge air temperature.Features• Sub-divided Circuits with Individual FuseProtection — Standard on all heaters witha total current draw of 48 Amps or greater.The fuse compartment is convenientlylocated for easy access.• Integral 24V Control Transformer — Standardon 480V models, eliminates the needfor an external control source.• Heavy Duty Magnetic Contactors are standardon all models.• Thermal Cutouts open the control circuitand disconnect power to the heating elementsif overheating occurs. AutomaticReset allows the control circuit to recloseand restore power when temperature returnsto normal.• Mounting Confi gurations — Recessedwelded fasteners on top of the heater cabinetare internally threaded for suspension of unitwith threaded rods. Ceiling and UniversalWall Swivel brackets are optional. The ceilingbracket lets you mount heater directlyto ceiling or over-head member, simply andeasily. The swivel mounting allows you toreadily adjust the direction of warm air fl owfor maximum comfort up to 180 degrees.Optional Features (Factory Installedor Field Installation Kits)Summer Fan Switch Kit — Field installablefor circulating warm stratifi ed air. Availablefor all models.Thermostat Kit — Field installable on allmodels. Range 40°F - 90°F.Disconnect Switch — Field installable switchenables power to be disconnected while servicingheater. 40, 80 and 100 Ampmodels available. Mounts in the back of theheater.• Ceiling Bracket(shown above)• Wall Mounting BracketAdvantages• Self Contained• Versatile, Flexible and High Performance• Easy Installation• Minimum Maintenance• Long Life• Attractive AppearanceBecause it has individually adjustable dischargelouvers to direct air fl ow,and can be wall or ceiling (plus swivel)mounted, the KUH heater may be usedin a variety of heating applications:• Primary Heating• Supplementary Heating• Dual System Heating• Spot Heating• Entryway Air-Curtain Heating11