Description This reliable, rugged, self-contained HDH heater is an ideal heat source for freeze protection or comfort heat in dusty, dirty, or corrosive non-hazardous environment. Applications   • Waste Water Treatment Plants   • Coal Handling Areas   • Food Processing Plants   • Foundries   • Steel Mills   • Cement Plants   • Ships   • Construction Sites

  • Car Washes
  • Swimming Pool Areas
  • Canneries
  • Hose Down (for cleaning)
  • Corrosion Resistant for Harsh Environments and Dairies.

Construction

Roll Formed Case is constructed of 20 gauge corrosion resistant type 304 stainless steel.
Adjustable Discharge Grille directs air flow up or down as needed.
NEMA 4X Control Enclosure houses the heater controls, contactors and control voltage transformer.
Heating Elements -- High quality, long-life, Stainless Steel Fintube ® (type 316) with stainless steel threaded fittings, which form a watertight seal between the elements and junction box, offer maximum resistance to corrosion
Totally Enclosed Motor -- The motor is permanently lubricated, ball bearing type and is epoxy painted for moisture and corrosion resistance.
Dynamically Balanced Fan -- Aluminum fan is epoxy coated and provides optimum air flow across the heating elements.

Features
Transformer provides a 120V control circuit (24V optional). Standard on all units except 2 kW and 3 kW, 120V, 208V or 240V single phase.
Heavy Duty Contactors for heating circuit and motor are included.
Automatic Reset Thermal Cutout is provided for fast heat response and overheat protection.
Epoxy Sealed Fan Delay dissipates residual heat build-up after shutdown.
Swivel Mounting Brackets made of Stainless Steel for swivel wall and ceiling mounting.

  •   Aircraft Servicing Areas
  •   Oil Refineries
  •   Areas Containing Metal Dusts

Construction
Cabinet -- 14 gauge steel construction with polyester powder coat paint finish.
Adjustable Louvers -- Control the direction of airflow as needed.
Rugged, Seamless, Copper Heating Elements -- are immersed in the sealed liquid-to-air heat exchanger.
Factory Sealed Heat Exchanger -- Features steel tubes with integral aluminum fins and filled with glycol-water heat transfer fluid.
Safety Pressure Relief Device on the heat exchanger is factory helium leak tested to assure a leak-proof design.
Explosion Proof Ball Bearing Motor -- Permanently lubricated and equipped with built-in thermal overload protection.
Epoxy Coated Aluminum Fan -- Prevents sparking

Features
Pre-Wired Explosion Proof Control Center with magnetic contactor and control circuit transformer.
Quick-acting Manual Reset Cutout Pole, Wall and Ceiling Mounting Kits -- Optional. Recessed threaded fasteners on top of heater for mounting with threaded rods.
Warranty -- Limited Three Year

Optional Features
  •   Built-in Thermostat 50F to 90 F
  •   Built-in Manual Disconnect Switch
  •   Pilot Light
  •   Fan Selector Switch

Designed for Areas Classified
Low operating temperature for atmospheres having an ignition temperature higher than 165C (329F) code T3B.
  •   Class I, Group C, D - Divisions 1 & 2
  •   Class II, Groups E, F, G - Divisions 1 & 2