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Qmark MUH252 Electric Fan Forced Horizontal Blower Unit Heater - 18750/25000 watts (18.75/25.0 kw) - 208/240 Volts - Three Phase

Part Number MUH252
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Qmark MUH252 Electric Fan Forced Horizontal Blower Unit Heater - 18750/25000 watts (18.75/25.0 kw) - 208/240 Volts - Three Phase
Qmark Marley Unit Heater
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Volts / Phase
MUH252 - 208 / 240 volt / 3 phase
MUH254 - 480 volt / 3 phase (+$49.00)
MUH256 - 600 volt / 3 phase (+$293.00)


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.

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