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Qmark MUH0321 Electric Fan Forced Horizontal Blower Unit Heater - 2200/3000 watts (2.2/3.0 kw) - 208/240 Volts - Single Phase

Part Number MUH0321
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Qmark MUH0321 Electric Fan Forced Horizontal Blower Unit Heater - 2200/3000 watts (2.2/3.0 kw) - 208/240 Volts - Single Phase
Qmark Marley Unit Heater
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Choose Options
Controls & Accessories MT1 Single Pole Thermostat [+$126.70]
MMB10 Bracket [+$104.00]
Disconnect Switch - Field Mounted [+$206.25]
Factory-installed Electrical Options [+$145.00]


Rugged - Light Weight - Advanced Design
Totally Versatile - All Models Mount Horizontally or Vertically
Voltages From 208 to 600 - 1 or 3 Phase -  3000 / 50,000 Watts

  • Unit mounts either horizontally or vertically. Totally versatile. For factories, warehouses, garages, stores, shipping rooms, power stations, aircraft hangers, etc. Can be used for primary, supplemental, spot or dual-system heating.

  • Wide range of optional control kits are field installable, increasing the MUH adaptability to the specification market.

  • Forced air unit heater with 10 power ratings; from 3kW to 50kW heating output; 208, 240, 277 and 480V; 10,230 to 170,500 BTU/hr.

  • 32 compatible models (no need to try to assemble a heating system from 70 or 80 models).

  • Heavy gauge die-formed steel housing. Two-toned smartly styled.

  • Advanced pull-through air flow design draws air across heating element for more even air distribution and cooler element operation.

  • Specially designed venturi outlet to meet that added throw as required in vertical position.

  • Branch circuit fusing (when required).

  • 1 or 3-phase wiring on 5 through 10kW 208/240V and 15kW 208V units (field interchangeable).

  • 24V control transformer standard on most models, providing a safer and more accurate means of temperature control. 3kW and 5kW 208-277V, have line voltage controls as standard (24V control available on made-to-order basis).

  • Automatic reset linear thermal cut-out, capillary type, provides protection over entire length of element areas (Manual reset protection available on made-to-order basis).

  • 2-speed fan selector switch (25 to 50kW models).

  • Fan delay feature eliminates cold drafts. Element heats up before fan cuts in, then fan continues to distribute heat after element shuts off.

  • Individually adjustable discharge louvers to control air flow.

  • All Standard Units Are Supplied With a Low Voltage Control Transformer and Contactor (24V) Except MUH03 & 05, 208, 240 & 277 Volt Models. Low Voltage Control On These Units Is Available On Made To Order. 

  • All Units Are Also Available On Special Order For 120V Control; Internal With Transformer or External Without Transformer.  Option 5A. Standard.  Option 5B offers a Made to Order - Amp Load Unbalanced on 3 Phase design.  Option 5C offers a Made to Order - Amp Load Balanced on 3 Phase.

Rating Apartment owner
In 1998 we bought 12 of these heaters, and have hade wonderful service from them. We have had to replace fan moters in 4, over the past two years, but after 15 years, I think that is understandable. We are very pleased. 12/06/2013
  Reviewed by:   from Phoenix AZ. on 12/6/2013

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