MDH Series Blower Heater




MDH series blower heaters are suitable for freestanding, surface or flanged pipe mounting applications with 360 degree louvers. Please note Dexon does not provide a rigid mounting flange.

All MDH series blower heaters are available in a –HC (High Capacity) model for situations where a higher air pressure is required than what the standard MDH unit can provide.

Blower Heater Features:

  • Status Indication
  • Overheat Protection
  • Low Temperature Shut Down
  • Discharge Temperature Sensor
  • Adjustable Fan Speed in Auto Mode
  • Full Fan Speed in Manual Mode
  • Auto Reset
  • Fan Boost Start
  • Indication of Fan Stopped
  • CSA Certified

Blower Heater Specifications:

  • Electrical Requirements
    1. Controls Circuit – 120VAC, 60Hz
    2. Heating Element Circuit – can be 120, 208, 240, 480, or 600VAC, 1 or 3 phase
    3. Wiring Between Remote Dexon Status Board to Dexon Blower Heater (Typically cable supplied by Dexon)
    4. Connections Between Optional Alarm Module and External Alarms (when used)
  • Heating Capacity – Available in 3000 to 4050WATT, Single Staged Elements Only
    1. CFM  capacity – approximately 80 – 300CFM @ 0″ Static Pressure
    2. Variable Speed Brushless DC Fan
  • Dimensions 775mmH x 300mmSQ for MDH Model
  • Dimensions 865mmH x 300mmSQ for MDH-HC Model
  • 360 Degree Louvered Air Inlet
  • Six Inch (150mm) Diameter Flat Bottom Discharge Outlet
  • Four Inch (100mm) Diameter Flat Bottom Discharge Outlet Available Upon Request

Installation Requirements:

  • Status Indicator must be installed remote from hazardous location in appropriate enclosure
  • Class 1, Div. 2 units must be fused remote from hazardous location.
  • A pressure relief vent/gooseneck equivalent to the discharge outlet is required

Blower Heater Options:

  • Class 1, Division 2, Gas Groups C & D Locations or Ordinary Locations Certification
  • Optional “95ALM” Alarm Module for interfacing with external alarms
  • Manual Mode Interface to Initiate Full Fan Speed from External Dry Contact
  • Pre-mounted Status Enclosure

Please refer to owner’s manual for more information