Q-Mark
Q-Mark MUH077 Fan Forced Electric Unit Heater 277V 7.5 kW
Wall- or ceiling-mounted fan-forced unit heater delivering 7.5 kW at 277 V with 650 cfm airflow and 37 °F temperature rise
- 5 kW output delivers 25,598 BtuH heating capacity
- Fan forced design moves 650 cfm for rapid warm-up
- 37 °F temperature rise across the air stream
- Wall or ceiling mounting with 18 ft horizontal throw
- Mechanical selector dial and 24 V AC contactor coil control
277 V 7.5 kW Fan-Forced Unit Heater
This Q-Mark electric heater mounts on a wall or ceiling and delivers 7.5 kW of fan-forced heat from a 277 V AC single-phase supply. It is built for commercial and industrial spaces that need permanent overhead heating.
27 A draw requires dedicated 277 V circuit
The unit pulls 27 A at 277 V AC, so the branch circuit and breaker must be sized for that load. Supplying it from a lower voltage or an undersized circuit will prevent the heater from reaching its rated output.
Mechanical dial and 24 V contactor coil simplify
A mechanical selector dial on the housing sets the heat level, while the internal contactor uses a 24 V AC coil for thermostat interfacing. The steel cabinet with powder-coated beige finish mounts horizontally, but installers must verify ceiling joist or wall stud spacing to support the 21 3/4 in height and 19 in width.
Highlights
- 5 kW output delivers 25,598 BtuH heating capacity
- Fan forced design moves 650 cfm for rapid warm-up
- 37 °F temperature rise across the air stream
- Wall or ceiling mounting with 18 ft horizontal throw
- Mechanical selector dial and 24 V AC contactor coil control
Specifications
| Brand | QMARK |
|---|
Questions about this item
How much area does the 7.5 kW output actually heat?
The unit delivers 25,598 BtuH with a 37 °F temperature rise, suitable for spot or supplemental heating in garages, workshops or vestibules.
What does the 277 V single-phase supply limit in practice?
It requires a dedicated 277 V circuit and draws 27 A, so the breaker and wiring must be rated accordingly; the internal contactor coil runs on 24 V AC.
What clearances are needed to mount the 21 3/4 in high steel cabinet?
The heater measures 21 3/4 in high, 19 in wide and 7 1/2 in deep, and is approved for both wall and ceiling mounting with an 18 ft horizontal air throw.
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