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5200-2083-004 Electric/Hydronic
Baseboard Heaters
(Model D)
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 heat-
ing 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 industrys leader in design, manufacturing, quality and service.
... The Employees of
Marley Engineered Products
Read Carefully - This instruction sheet contains vital infor-
mation for the proper installation, use and efficient opera-
tion of the heater. Carefully read the manual before instal-
lation, operation, or cleaning of the heater. Failure to
adhere to the instructions could result in fire, electric
shock, death, serious personal injury or property damage.
Save these instructions and review frequently for continu-
ing safe operation and instructing future users.
WARNING: HAZARD OF FIRE OR ELECTRICAL SHOCK.
1. Keep all electrical cords, foam filled articles, drapes,
bedding and other household furnishings away from
contact with heater. It is recommended all items be
kept a minimum of six (6") inches (152mm) from heater.
2. Do not install baseboard heater below electrical con-
venience receptacles (outlets).
3. Do not install baseboard heater against vinyl wallpa-
per, paperboard or low density fiberboard surface. Do
not install vinyl drapes or vinyl blinds above heater.
4. Do not recess heater in wall.
5. The installation must comply with applicable local, and
National Electrical Code and utility requirements.
6. Do not remove or by-pass thermal cutout.
7. To reduce the risk of fire, do not store or use gasoline
or other flammable vapors and liquids in the vicinity of
the heater.
8. Personal injury or death could result from electric
shock. Disconnect all power to heater at main panel
before attempting to install or service this heater.
9. Supply voltage must be the same as heater voltage.
Check heater nameplate and supply voltage before
energizing.
10. Supply wiring must be suitable for 90°C.
Installation & Maintenance Instructions
FILE #E37116
SAVE THESE INSTRUCTIONS
1
!
WARNING CERTAIN FABRICS DISCOLOR IN TIME FROM INDIRECT SUNLIGHT AND
NORMAL ROOM TEMPERATURE - MOSTLY ORGANIC AND SYNTHETIC
MATERIAL. THEY WILL DISCOLOR MORE RAPIDLY WHEN EXPOSED TO
DIRECT SUNLIGHT AND WARM CURRENTS. HANG DRAPES TO PROVIDE
MINIMUM OF 2 INCHES (51mm) AIR SPACE BETWEEN HEATER FRONT
AND NEAREST DRAPE FOLD AS SHOWN IN EXAMPLE 1, FIGURE 1, OR 6
INCHES (152mm) AIR SPACE BETWEEN TOP OF HEATER AND BOTTOM
OF DRAPES AS SHOWN IN EXAMPLE 2, FIGURE 1. ALLOW MINIMUM
CLEARANCE OF 1 INCH (25mm) FROM DRAPES TO CEILING AND TO TOP
OF FLOOR COVERING TO PERMIT AIR CIRCULATION.
CLEARANCES
FLOORS & CARPETING: HEATERS MAY BE MOUNTED DIRECTLY ON ANY
FLOOR SURFACE, INCLUDING CARPETING. WHERE WALL-TO-WALL CAR-
PETS ARE INSTALLED AFTER THE BASEBOARD INSTALLATION, THE CAR-
PETING CAN BE RUN UP TO THE FRONT AND AROUND THE HEATER BODY.
FULL LENGTH DRAPES: FOR THE MOST SATISFACTORY OPERATION OF
HEATERS, THE FOLLOWING CLEARANCES MUST BE MAINTAINED:
1. HANG DRAPES SO THAT, IN USE, THEY EXTEND BELOW THE CENTER
LINE OF THE HEATER, BUT WITH AT LEAST 1 (25mm) CLEARANCE FROM
THE TOP OF THE FINISHED FLOOR COVERING, SUCH AS CARPET, TILE,
ETC.
2. HANG DRAPES SO THERE IS AT LEAST 2 (51mm) BETWEEN THE
EXTREME FRONT OF THE HEATER AND THE NEAREST FOLD OF
DRAPES, IN THE FOLDED BACK POSITION (OPEN DRAPE POSITION).
3. HANG DRAPES SO THERE IS AT LEAST 1 (25mm) BETWEEN THE TOP OF
THE DRAPES AND THE CEILING.
SHORT DRAPES: HANG DRAPES SO THERE IS AT LEAST 6 (152mm) CLEAR-
ANCE ABOVE THE TOP OF THE HEATER.
FURNITURE: DO NOT PLACE FURNITURE AGAINST HEATER. IT IS RECOM-
MENDED ALL ITEMS BE KEPT A MINIMUM OF 6 (152mm) FROM HEATER.
INSTALLATION OF SINGLE UNIT
Liquid filled baseboard heaters are designed for installation in new or existing con-
struction. In existing construction, baseboard molding should be removed and the
heaters mounted flush against the wall surface. When replacing molding allow 1/16
(1 mm) clearance between molding and ends of heaters.
NOTE: This heater can be wired in either the right or left hand junction box.
See Table 1 for wiring compartment volumes.
Table 1. Field Wiring Compartment Volumes
Est. Net Total Volume
Description
CM3
In3
Heater Wiring Compartment (One End)
200
13.25
Heater Wiring Compartment with
T1 or T2 Thermostat Accessory
175
11.25
Accessory Blank Section (No Controls)
2400
145
AC Accessory Section
2300
140
DR Accessory Section
2300
140
CDS2 Accessory Section
2300
140
LVR Accessory Section
2100
130
CAUTION
TO PREVENT POSSIBLE DAMAGE TO INTERNAL HEATER WIRING, ALL
DRILLING OF END CAPS MUST BE DONE WITH END CAPS REMOVED
FROM HEATER.
CAUTION
CAUTION
IMPORTANT
!
2
!
!
!
HEATER MAY BE INSTALLED ABOVE THE FLOOR SUCH AS ATOP A BASE-
BOARD. HOWEVER, THE POWER SUPPLY MUST ENTER THE HEATER
THROUGH THE KNOCKOUT IN THE BACK OF THE HEATER IF INSTALLED
ABOVE THE FLOOR.
2" (51mm) CLEARANCE
(MIN)
1" (25mm) CLEARANCE
(MIN)
BASEBOARD HEATER
EXAMPLE 1
W
ALL
FLOOR
CEILING
1" (25mm) CLEARANCE
(MIN)
DRAPERY
6" (152mm) CLEARANCE
(MIN)
BASEBOARD HEATER
EXAMPLE 2
W
ALL
FLOOR
CEILING
DRAPERY
1" (25mm) CLEARANCE
(MIN)
Figure 1. Positioning Drapery Near Heater
NOTE: ALLOW 1/8" (3mm) MINIMUM
CLEARANCE AT ENDS OF HEATER FOR
EXPANSION AND CONTRACTION
NAIL POINTS
FLOOR
Figure 2. Installation of Heater
1. Position the heater at the desired location on the wall as shown in Figure 2. For
maximum heating comfort, position the heater under a window.
2. Mark the location on the wall or floor for the power supply entry into the heater.
Remove the heater from the wall and drill appropriate hole in the wall or floor.
3. Remove the left or right junction box end cap by removing the screw in the end
of the heater and sliding the cap outward from the heater (Figure 3).
4. Remove the front cover of the heater by removing the screws in the lower cor-
ners. Pull the bottom of the cover outward and lift the top of the cover off the
junction box. Repeat for the opposite end. Snap the top of the cover off the cen-
ter bracket and off the intermediate supports. See Figure 4.
5. Remove the appropriate electrical knockout from the back of the heater or
accessory if necessary. Supply wiring may also enter the raceway through the
floor or wall without using a knockout. 3
6. If one or more heaters are connected to a single branch circuit, determine the
total ampere load (see Nameplate), then determine the power supply wire size
and the circuit breaker or fuse size required. (See Table 2)
Table 2.
Minimum
Circuit
AWG Wire
Breaker
Total
Size
or Fuse
Amps
(Copper)
Size
0 thru 12
#14
15 Amp
12.1 thru 16
#12
20 Amp
16.1 thru 24
#10
30 Amp
7. Install the power supply wire to the heater location and thermostat location as
determined by the thermostat option selected. If the power supply enters
through the knockout in back of the heater, install a cable connector (not includ-
ed) on the power supply wire and insert in knockout, leaving 6 (152mm) to 8
inches (203mm) of wire for heater connection.
8. If the power supply enters the heater through the hole in bottom portion of the
junction box, a cable connector is not required.
9. Position the heater on the wall and locate wall studs. Drill, punch, or use nail dri-
ver to put holes through the enclosure back (above the element) at stud loca-
tions.
NOTE: The heater enclosure is provided with nail point marks showing cor-
rect locations for mounting holes.
The following methods of mounting the heaters to common types of wall sur-
faces are suggested:
a. Plaster Walls: Use toggle or molly screw anchors.
b. Wall Studs: Use #12 round head screws penetrating at least 3/4" (19mm)
into stud.
c. Masonry Walls: Use #12 round head screws into lead, plastic, or fiber
expansion anchor.
Tighten all screws snugly, then back off 1/2-turn to allow the back panel to
expand and contract.
10. Connect supply wiring to heater as described in Figure 6, or as shown in the
wiring diagrams supplied with the accessory kits intended for use with this
heater.
11. Secure the desired accessories to baseboard as shown in the accessory
instruction sheet, and use the wiring diagram supplied with the accessory.
NOTE: Baseboard heaters must be thermostatically controlled.
12. Replace the front cover by fitting the top lip of the cover onto the tabs on each
junction box and top edge of the element support bracket(s). Rotate the cover
downward, pushing the bottom corners inward. Install two screws (removed
in Step 4) through the cover into the junction boxes. See that the bottom of
the cover is engaged onto the bottom of each element support bracket. See
Figure 7.
13. Replace the end cap(s) by installing screw(s) (removed in Step 3).
INSTALLATION OF MULTIPLE UNITS
1. With heaters mounted end-to-end, allow 1/32-inch (1mm) of expansion space
per heater between each heater.
2. For each heater to be installed, refer to and follow Installation of Single Unit,
Steps 1 through 8.
3. If the power sup