CWH3000 Series Submittal

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.
ON/OFF SWITCH: A double-pole, single throw on/o switch
shall be mounted on the back box for positive disconnect of
power supply. It will be completely concealed behind the
front cover.
MOTOR AND CONTROLS: The fan motor shall be totally
enclosed, impedance protected, permanently lubricated and
with a totally enclosed rotor. Fan control shall be of the bi-
metallic, snap-action type and shall activate fan after heating
element reaches operating temperature, and continue to
operate the fan after the thermostat is satised and until
all heated air has been discharged. The thermostat shall be
single-pole type on all models. Thermal cutout shall be bi-
metallic, snap-action type designed to shut o heat in the
event of overheating. The fan shall be ve-bladed aluminum.
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 specications
without notice.
Catalog Number Volts Amps Watts Phase BTU/HR
CWH3SM Surface mounting frame for surface installations
CWH3S1 1” deep surface mounting frame for semi-recessed installation
CWH3S2 2” deep surface mounting frame for semi-recessed installation
LFKSFC 14 gauge security front cover
Accessories
CWH3150F
CWH3180F
CWH3404F
CWH3407F
CWH3307F
CWH3408F
CWH34083F
CWH34043F
CWH3504F
CWH3507F
CWH3508F
CWH35083F
CWH35043F
CWH3203F
CWH3206F
CWH3153F
CWH3156F
CWH3303F
CWH3306F
CWH3403F
CWH3406F
CWH3503F
CWH3506F
120
120
240/208
277/240
277
208
208
240
240/208
277/240
208
208
240
347
600
347
600
347
600
347
600
347
600
1500
1800
4000/2000 - 3000/1500
4000/2000 - 3000/1500
3000/1500
4000/2000
4000
4000
4800/3600
4800/3600
4800
4800
4800
2000
2000
1500
1500
3000
3000
4000
4000
4800
4800
12.5
15.0
16.7/8.3 - 14.5/7.2
16.7/8.3 - 14.5/7.2
10.8/5.4
19.2/9.6
11.1
9.7
20/17.3
20/17.3
23.1
13.4
11.6
5.8
3.3
4.3
2.5
8.6
5
11.5
6.7
13.8
8
1
1
1
1
1
1
3
3
1
1
1
3
3
1
1
1
1
1
1
1
1
1
1
5115
6138
13,640/6820 - 10,230/5115
13,640/6820 - 10,230/5115
10230/5115
13,640/6820
13,640
13,640
16375/12280
16375/12280
16,375
16,375
16,375
6820
6820
5115
5115
10,230
10,230
13,640
13,640
16,375
16,375
ZSS-QCWH3 | 9-2014