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Heatrex
P.O. Box 515,
Meadville, PA 16335
Phone: (814) 724-1800
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All Categories > Explosion-Proof Heaters > 233 Series Explosion-Proof Unit Heater > Item # HX-233-FB-0156U  
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Item # HX-233-FB-0156U, 233 Series Explosion-Proof Unit Heater


Heatrex's 233 Series Exp explosion-proof unit heater is designed with both safety and versatility in mind. Unique 233 Series features include :
  • Industry's Lowest Ignition Temperature Code Rating : T3C, 320°F (160°C)
  • Dual Over temperature Protection: With both automatic and manual reset over temperature cutouts for additional safety.
  • Nontoxic Propylene Glycol Heat Transfer Fluid
  • Low 70 PSIG Relief Valve Setting : This assures that in an emergency, the initial escaping vapor temperature remains below the 320°F (160°C) ignition temperature.
  • Corrosive Resistant Options : Heatrex offers three constructions suitable for most applications. Standard construction for use in dry non-corrosive areas includes : Welded steel heat exchanger; powder-coated cabinet; epoxy-coated motor. A 316 stainless steel construction suitable for Waste Water Treatment Plants includes : 316 stainless steel heat exchanger, headers and tubes with aluminum fins; stainless steel cabinet; corrosive resistance hardware; epoxy-coated motor. Third construction is suitable for use in Chemical Plants where chlorides are present and includes : Heresite® coated heat exchanger, cabinet, fan blade; corrosive resistance hardware; epoxy-coated motor.




Specifications  · Standard Construction Features  · Applications  · Standards

Specifications

Power
15 kW

Voltage Rating
480 V

Phase
3

Total Amps1
19 A

Frame Size
2

Approx. Air Temperature Rise
27 ºF
15 ºC

Availability
1 Week

Factory Built-in Options

 View
C1 - 316 Stainless Steel Corrosion Resistant Construction (Waste Water Treatment Plants)
C2 - Dirty Duty Corrosion- Resistant Construction (Chemical Plants)
D - Disconnect Switch
E - Group E (Metal Dust ) Construction
H - 50 Hertz Motor
K - Warning Pilot Light
L - "Heater on" pilot light
M - Manual Reset Thermal Cutout with Backup Contactor
S - Auto/Fan Selector Switch
T - Adjustable Thermostat
V - 120 Volt Control Circuit
1 Total Amps = Heating element amps and motor amps.


Standard Construction Features
  • Heat Exchanger - Efficient liquid-to-air design utilizes an all welded steel headers and finned tube construction with spiral wound aluminum fins. Industrial grade Heatrex heating elements are immersed in a nontoxic, inhibited, propylene glycol heat transfer fluid that provides freeze protection down to -49°F (-45°C). The heat exchanger is hydrostatically tested at 350 psig. A pressure relief valve provides excess pressure protection and is set at 70 psig.
  • Fan Motor Assembly - Consists of an explosion-proof motor fitted with an aluminum fan blade. The motor has double-shielded, permanently lubricated ball bearings and automatic reset line breaking thermal overload protection. Motors furnished on standard units operate at line voltage and are prewired to the control enclosure so separate field wiring to the motor is not required. The standard motor is rated for Class I, Groups C and D, Class II, Groups F and G. The minimum operating temperature is -14°F (-25°C) and the minimum storage temperature is -49°F (-45°C).
  • Cabinet/Louvers - Industrial grade, corrosion resistant construction fabricated from powder coated 14-gauge galvanized steel. The adjustable louvers have minimum opening safety stops.
  • Controls - Factory mounted on the unit heater. Standard built-in controls include automatic and manual reset over temperature cutouts, controlling magnetic contactor, 24-volt control circuit transformer and incoming power terminal blocks housed in a NEMA 7, 9 cast aluminum enclosure.


Applications
  • Aircraft Hangars/Service Areas
  • Chemical Storage/Handling Areas
  • Coal Preparation Plants
  • Compressor Stations
  • Grain Elevators
  • Oil Refineries and Rigs
  • Paint Storage Areas
  • Petrochemical Plants
  • Sewage Pump Stations/Treatment Plants
  • Spray Booths


Standards
    Class I, Divisions 1 and 2, Groups C and D
    Class II, Divisions 1 and 2, Groups E, F and G
    Class I, Zones 1 and 2, Group IIB
    Temperature Code T3C, 320°F (160°C)


 MORE IMAGES 

·  233 Series Dimensional Drawing


 DOWNLOADS 

Use of Electric Heaters in Hazardous Locations
(PDF, 114KB)

233 Series Standard Construction
(PDF, 136KB)

Ceiling Mounting Kit IOM
(PDF, 38KB)

Wall Mounting Kit IOM
(PDF, 27KB)

Pole Mounting Kit IOM
(PDF, 36KB)

Unit Heaters Limited Warranty
(PDF, 90KB)



 Accessory Items 


Accessory Items (Ceiling Mounting Kit)
Accessory Items

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