Submittal Sheet
ARCHITECT’S AND ENGINEER’S SPECIFICATIONS*
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. Heaters shall be cETLus listed.
BACK BOX: The back box shall be designed as a recessed
rough-in box in either masonry or frame installations and is
also used when surface mounting frames are used in surface
mounting installations. The back box shall be heavy gauge
galvanized steel and shall contain knockouts through which
power leads enter.
INNER FRAME ASSEMBLY: The heater assembly, which ts
into the back box, shall consist of a heavy gauge steel fan
panel to which all of the operational parts of the heater are
mounted. The inner frame assembly shall be completely pre-
wired.
HEATING ELEMENT: 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 ns
are copper brazed. The element shall cover the entire air
discharge area to ensure uniform heating of all discharged air.
It shall be warrantied for 5 years.
MOTOR AND CONTROLS: The fan motor shall be a shaded
2 pole, impedance protected, class B”insulation with
permanently lubricated. The thermostat shall be single-
pole type on all models. Thermal cutout shall be to self-hold
(manual-reset), snap-action type designed to shut o heat in
the event of overheating. The fan shall be tangential blower for
whisper quiet operation.
SURFACE MOUNTING FRAME: The surface mounting frame
shall be of heavy gauge steel designed to mount around the
back box for a nished surface installation. Slot knock outs
shall be provided for power supply conduit.
FRONT COVER: The louvered front cover shall be of heavy
gauge steel with a powder paint nish. A plug button will be
provided to replace the thermostat knob and render the unit
tamper-resistant.
FINISH: All sheet metal parts, except the galvanized steel
back box, shall be phosphatized, then completely painted by a
powder paint process.
*In the interest of continual improvements in product and performance,
Marley Engineered Products reserves the right to change specications
without notice.
Catalog Number Volts Amps Watts TStat Max BTU/HR
GFRTSP Single Pole Built-In Thermostat 25 Amps @ 120-240V 45 - 85 degrees range
GFRTDP Double Pole Built-In Thermostat 25 Amps @ 120-240V 45 - 85 degrees range
GFRSM Surface Mounting Frame
GFRBB Single backbox for GFR heater
GFRBB6 Multi-pack backbox (6pcs)
Accessories
GFR1500F
GFR2004F
GFR2404F
GFR1500T2F
GFR2004T2F
GFR2404T2F
120
240*
240*
120
240*
240*
1500/1125/750/375
2000/1500/1000/500
2400/1800/1200/600
1500/1125/750/375
2000/1500/1000/500
2400/1800/1200/600
12.5/9.4/6.3/3.1
8.3/6.3/4.2/2.1
10.0/7.5/5.0/2.5
12.5/9.4/6.3/3.1
8.3/6.3/4.2/2.1
10.0/7.5/5.0/2.5
No
No
No
Double Pole
Double Pole
Double Pole
5118
6824
8189
1705
6138
8184
ZSS-QGFRO | 9-2014