The heating equipment shall include an electric automatic fan forced air heater suitable for small area heating, as manufactured by QMark, a Marley Engineered Products brand, Bennettsville, SC. The heater shall be designed for wall mounting, recess or surface. Heater shall be cETLus listed.
The back box shall be designed as a recessed rough-in box in either masonry or frame installation and is also used when surface mounting frame are used in surface mounting installation|The back box shall be heavy gauge galvanized steel and shall contain knockout through which power lead enter|The heater assembly, which fit into the back box, shall consist of a heavy gauge steel fan panel to which all of the operational part of the heater are mounted|The inner frame assembly shall be completely prewired|The heating element shall be of the non-glowing design consisting of an 80/20 nickel chromium resistance wire enclosed in a steel sheath to which plate fins are copper brazed|The element shall cover the entire air discharge area to ensure uniform heating of all discharged air|A double-pole, single throw on/off switch shall be mounted on the back box for positive disconnect of power supply|It will be completely concealed behind the front cover|The fan motor shall be impedance protected, permanently lubricated|Fan control shall be bi-metallic, snap action-type and shall activate fan after heating element reach operating temperature and continue to operate the fan after the thermostat is satisfied and until all heated air has been discharged|The thermostat shall be single pole-type on all model|Thermal cutout shall be self hold (manual reset) type designed to shut-off heat in the event of over heating|The fan shall be four bladed aluminum|A backup (end of life) thermal fuse shall be provided for additional safety|The surface mounting frame shall be of heavy gauge steel designed to mount around the back box for a finished surface installation|Slot knockout shall be provided for power supply conduit|The louvered front cover shall be of heavy gauge steel with a powder paint finish|A plug button will be provided to replace the thermostat knob and render the unit tamper-resistant|All sheet metal part, except the galvanized steel back box, shall be phosphatized, then completely painted by a powder paint process
QMARK Heater, Automatic Electric Fan Forced, Series: CWH1000, 6826 Btu/hr Capacity, 208 to 240 V, 8.4 A, 2000 W Power, 10-5/8 in Width, 12-1/8 in Height, Wall Mounting, Steel, Northern White, Galvanized/Powder Coated