Qmark KCJ User Manual
J Series (Model B)
Institutional Convector
Dear Owner,
Congratulations! Thank you for purchasing this new heater manufactured by a division of Marley
Engineered Products. You have made a wise investment selecting the highest quality product in the heating industry. Please carefully read and follow the installation and maintenance directions shown in this
manual. You should enjoy years of efficient heating comfort with this product from Marley Engineered
Products... the industry’s leader in design, manufacturing, quality and service.
... The Employees of
Marley Engineered Products
Read Carefully - These instructions are written to help
you prevent difficulties that might arise during installation
of heaters. Studying the instructions first may save you
considerable time and money later. Observe the following
procedures, and cut your mounting time to a minimum.
1. To prevent electrical shock, disconnect all power coming to
heater at main service panel before wiring or servicing.
2. All wiring must be in accordance with the National and Local
Electrical Codes and the heater must be grounded as a precaution against possible electric shock.
3. Verify the power supply voltage coming to heater matches
the ratings printed on the heater nameplate before energizing.
4. Do not insert or allow foreign objects to enter any ventilation
or exhaust opening as this may cause an electric shock,
fire, or damage to the heater.
5. To prevent a possible fire, do not block air intakes or exhaust
in any manner. Keep combustible materials, such as boxes,
crates, drapes, etc., away from heater.
6. A heater has hot and arcing or sparking parts inside. Do not
use it in areas where gasoline, paint or flammable liquids are
used or stored.
7. Use this heater only as described in this manual. Any other
use not recommended by the manufacturer may cause fire,
electric shock, or injury to persons.
8. This heater is not approved for use in hazardous atmospheres
or corrosive atmospheres such as marine, green house
or chemical storage areas.
Installation & Maintenance Instructions
FILE #E21609
1
SA VE THESE INSTRUCTIONS
WARNING
!
MOUNTING AND WIRING
NOTE: Electrical wiring is to be sized in accordance with National
Electric Code and local codes using at least 75°C type RH, THW
or equivalent insulated wire. See chart located on page 3 for
amp. loads.
1. Locate on vertical wall with length of heater positioned
horizontally.
2. When selecting a mounting location, the following minimum
distances must be observed to insure proper operation.
a. Six (6") inches (152mm) from bottom of heater to floor.
b. One (1.5") inch (38mm) from wall or other obstruction to
the right or left side of heater.
3. Do not mount heater in a recess, since such mounting
interferes with free air circulation, increases temperature and
prevents proper thermostat operation.
NOTE: Unit is shipped with non-tamper resistant screws securing
front cover. Remove screws and discard.
4. Mount the rear panel assembly of the heater to the wall using
the 11/32" (8.7mm) diameter holes (bolts and wall anchors to be
supplied by customer).
5. Install the perforated cover by hooking the top edge of the
cover over the top edge of rear panel.
6. Attach the bottom lip of the perforated cover to the wall using
the 1/4 - 20 x 1" tamper proof screws provided (Wall anchors
to be supplied by customer).
7. Electrical wiring must be brought into heater through 1-3/32"
(27.8mm) diameter hole located in the rear panel.
8. Grounding conductor must be connected to the green pigtail
lead.
9. Make the proper connections following the wiring diagram.
Install disconnect switch cover assembly with (2) #8 x 5/8"
tamper proof screws (provided).
10. Adjust thermostat to the desired setting. Install top access
cover with (4) #8 x 5/8" tamper proof screws (provided).
OPERATION AND MAINTENANCE
To assure efficient operation, follow the simple instructions listed
below.
TO CLEAN HEATER
Because of the convection heating principle which depends upon
a circulation of air through the finned element, dust particles will
periodically be deposited between the fins, and should be
removed occasionally for maximum efficiency of the heater. With
front cover removed, a vacuum cleaner with proper attachments
can easily be worked along the top and bottom of the finned element to clear it of dust deposits.
TO REPAINT, IF DESIRED
The baked enamel finish was chosen to blend with interior decors.
If you wish to repaint the heaters, use high quality household
enamel. No primer is necessary. Do not use rubber base paint.
Paint heater front cover only. Do not paint heating element.
HAZARD OF ELECTRIC SHOCK. DISCONNECT ALL
POWER BEFORE A TTEMPTING TO SERVICE THE
HEA TERS.
WATTAGE
DIMENSIONS
A
24"
608mm
28"
709mm
36"
912mm
48"
1216mm
60"
1520mm
72"
1824mm
96"
2432mm
18"
456mm
18.25"
462mm
B
19.1”
485 mm
11.5"
291mm
15.0"
380mm
14.3"
362mm
13.75"
348mm
16.75"
424mm
C
-
11.5"
291mm
16"
405mm
14.3"
362mm
13.75"
348mm
16.75"
424mm
400
500
750
1000
1250
1500
2000
2
other obstruction
TO POWER
CIRCUIT
!
DANGER
(1000W thru 2000W)
(1250W thru 2000W)
120V thru
277V ONLY
347V and
600V ONLY
(347V) N
(600V)L2
TO POWER
CIRCUIT
Wiring Diagrams
L1
N
A
B
C
(all models)
(1000W, 1 250W, 1 500W)
center line of
1-3/32" dia. hole
in rear panel
for customer entry.
19"
Min.
(481mm)
5"
(127mm)
6" to floor Min.
(152mm)
(25mm)
Top
Access
Cover
Disconnect
Switch
1"
3"
(76mm)
Min.
1 3/4"
(25mm)
Tamper Proof
Screws 10 - 32 x 1/2"
Conduit Entrance
Disconnect Switch Cover
Mounting holes 11/32" (8.7mm) dia. for mtg.
front cover to wall by using 1/4 - 20 x 1"
tamper proof screws supplied.
Thermostat
Element
High
Limit
L1
N
Disconnect
Switch
L1
Thermostat
Limit
Disconnect
Switch
L2 or N
Element
Transformer
Relay
Red
White
Red
Blue
Black
or other obstruction
C
C
(1250W & 1500W o nly)
Mounting holes 11/32" (8.7mm)
dia. for mtg. rear panel to wall
(25mm)
10" 16"
(253mm)
3 7/16"
(87mm)
(6.3mm)
1/4"
Min.
1"
(405mm)
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