Marley C6012D, C6024D, C6027D, C7508D, C7512D Installation & Maintenance Instructions Manual

COVE HEATER

Patent Pending

Model D

Installation & Maintenance Instructions

WARNING

!

Read Carefully

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. TO
REDUCE RISK OF FIRE OR ELECTRIC SHOCK:

1. 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.

3. Verify the power supply voltage coming to heater matches the
ratings printed on the heater nameplate before energizing.

4. This heater is hot when in use. To avoid burns, do not let bare
skin touch hot surfaces.

- These instructions are written to help you

FILE #E21609

5. 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.

6. Do not block air intakes or exhaust in any manner. Keep com­bustible materials, such as crates, drapes, etc., away from
heater. Do not install behind door, furniture, towels, or boxes.

7. 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.

8. 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.

9. This heater is not approved for use in corrosive atmospheres
such as marine, green house, or chemical storage areas.

CAUTION

1. THE HEATER MUST BE MOUNTED AT LEAST 6' (182.8 cm) or
(1.83 m ) ABOVE THE FLOOR TO PREVENT ACCIDENTAL CONTACT.

2. TO PREVENT POSSIBLE OVERHEATING OR DAMAGE DUE TO
OVERHEATING, REFER TO FIGURES 1 AND 4 FOR SIDE, TOP,
AND BOTTOM CLEARANCE REQUIREMENTS.

!

GENERAL

When installing 2 or more heaters along one wall:

1. Mount heaters allowing adequate spacing between heaters as
shown in Table 1.

2. Install optional RCCSPC Splice Plate (if desired) per instructions
provided with RCCSPC.

When mounting heaters end to end add the “maximum allowable
expansion” of each heater and provide that clearance from end to end
of units. See Table 1.

Table 1

MAXIMUM ALLOWABLE MOUNTING SLOT

WATTS

450
600
750

900
1050
1200
1500
1800

EXPANSION DISTANCE (CTR-CTR)

1/8” (4mm)

1/4” (7mm)
1/2” (13mm)
3/4” (19mm)
7/8” (23mm)

1-1/8 (29mm)
1-3/8 (35mm)

1-1/2” (38mm)

27.75” (705mm)

40.75” (1,035mm)

52.75” (1,340mm)

64.75” (1,645mm)

76.75” (1,949mm)

87.75” (2,229mm)

111.75” (2,838mm)

125.75” (3,194mm)

SAVE THESE INSTRUCTIONS

MOUNTING THE HEATER

For 450 to 1200 Watt Heaters:

1. Select correct mounting distance from the ceiling material per
Figure 1. Using Table 1, determine the center to center distance
of the end wall brackets for the particular model (wattage) to be
mounted. Divide this value by 2 to determine the approximate
location to mount the center wall bracket. Mark these locations on
the chosen wall. Locate a stud nearest the center wall bracket
mark. Use this stud for the bracket location. (Disregard original
mark mentioned above) Assemble end wall brackets as shown in
Figure 3.

2. Using the template (provided), align the top of the template with
the ceiling and the center of the pre-punched holes with the
bracket marks on the wall. Choosing the proper ( end or middle)
bracket location holes, mark the bracket pilot hole locations using
the selected pre-punched holes provided on the template. With
the fasteners provided, mount the assembled end wall brackets
and center wall bracket to the wall. Using a tape measure, deter­mine the distance between the center (slot) of the left end wall
bracket and the hook of the center wall bracket. Add 3-5/8 inches
(92 mm) to this value and record it for center support bracket
location on the cove heater.

3. Orient the cove heater face down on a protective flat surface.
Using the value recorded in step 2, measure this distance from
the left end of the cove heater and mark this location on the back
surface of the panel. Slide the center support bracket to the
marked position on the panel, aligning the center of the bracket
with this mark.

4

” (102 mm) MIN. (DRY WALL CEILINGS)

6

” (152 mm) MIN. (LAY IN OR VINYL

CEILINGS OR PLASTIC MOLDING)

1

“ (25.4 mm) MIN. BETWEEN BOTTOM

OF HEATER AND ANY FABRIC

6‘ MINIMUM
(1.83 m)
CLEARANCE
TO FLOOR

CURTAINS

CEILING

WALL

FLOOR

MOUNTING RESTRICTIONS

}

4” (102 mm)(DRY WALL CEILINGS)
6” (152 mm) LAY IN OR VINYL CEILINGS
OR PLASTIC MOLDING)

BACK VIEW

MOUNTING SLOTS

MOUNTING BRACKETS

34” TO 132”

(0.86 M to 3.35 M)

CEILING

WALL

3”

2”

TOP VIEW

4-3/16“ (106.4 mm)

1-1/2” (38.1 mm)

HEATERS TO BE MOUNTED
AT LEAST SIX (6) FEET
(1.83 M) FROM THE FLOOR.

MINIMUM CLEARANCES:

• 4” (102 mm) MIN. TO DRY WALL CEILING.

• 6” (152 mm) MIN. TO LAY-IN OR VINYL CEILING
OR PLASTIC MOLDING.

CEILING

2-1/2”

13/16”

Figure 1

HEATE R

HEATE R

4”

4”

MOUNTING THE HEATER (Continued)

4. To mount cove heater, attach center support bracket to the center
wall bracket by tilting the heater back and allowing the upper slot

to fall onto the bracket hook per Figure 2. Attach the junction

boxes to the end wall brackets in a similar manor. Bring the cove

heater forward to lock into place.
For 1500 to 1800 Watt Heaters:
The 1500 & 1800 watt cove heaters require the additional support of

(2) center wall brackets due to the extra length. The mounting steps
are similar to the 450 to 1200 watt cove heater with the following
exceptions:

1. After the approximate center location between the end wall brack-

ets has been determined, measure 30 inches (762 mm) on each
side of this location to determine the approximate location to
mount the center wall brackets. Locate a stud nearest each mark.
Use these studs for the center wall bracket locations. (Disregard
original 30 inch location marks)

2. Using the provided template, align the top of the template with the

ceiling and the center of the pre-punched holes with the bracket
marks on the wall. Choosing the proper bracket location holes,
mark the bracket pilot hole locations using the selected pre­punched holes provided on the template. With the fasteners pro­vided, mount the assembled end wall brackets and center wall
brackets to the wall. Measure the distance between the center
(slot) of the left end wall bracket and the hook of the left center
wall bracket. Add 3-5/8 inches (92 mm) to this (left end) value and
record it for the left center support bracket location on the cove
heater. Determine the distance between the center of the right
end wall bracket and the hook of the right center wall bracket.
Add 3-5/8 inches (92 mm) to this (right end) value and record it
for the right center support bracket placement on the cove heater.

3. Orient the cove heater face down on a protective flat surface.

Using the left end value recorded in step 2, measure this distance
from the left end of the cove heater and mark this location on the
back surface of the panel. Using the right end value recorded in
step 2, measure this distance from the right end of the cove
heater and mark this location on the back surface of the panel.
Slide the center support brackets to the marked positions on the
panel, aligning the center of the brackets with each mark.

4. To mount cove heater, attach center support brackets to the cen-

ter wall brackets by tilting the heater back and allowing the upper
slot to fall onto the bracket hook per Figure 2. Attach the junction
boxes to the end wall brackets in a similar manor. Bring the cove

heater forward to lock into place.

5. The cove heater can be wired from either end of the heater.

Install a cable clamp (supplied by others) in one of the knockouts
located in back of the junction boxes you plan to use. Insert the
power supply cable through the cable clamp allowing approxi­mately 6” (152mm) of cable length to remain inside the box to
facilitate wiring. Add at least 2 inches of cable loop between wall
and knockout entering the junction box to allow for heater expan­sion.

ALIGN JUNCTION
BOX SLOT WITH
BRACKET HOOK

Figure 2

#10-16 X 1-1/2”
LONG SCREWS

JUNCTIONBOX

ELEMENT LEAD

Figure 3

MOUNTING HEATER

TO END BRACKET

ASSEMBLY

HEATER LOCKED IN
POSITION ON END
WALL BRACKET

END WALL

BRACKET ASSEMBLY

CENTER WALL
BRACKET

CENTER
SUPPORT
BRACKET

CROSSOVER LEAD

END CAP

#8-18 X 1” LONG SCREWS

CUTAWAY SHOWING
CENTER MOUNTING
BRACKET DETAILS

CENTER
SUPPORT
BRACKET

BACK WRAP
HEAT SHIELD

COVE HEATER
FRONT PANEL

OP

T

LANGE

F

BACK
WRAP

WIREWAY

Figure 4

6. Refer to wiring diagrams on next page.

7. Attach end caps (found in parts bag) as shown in Figure 3.

1. Heaters must be located so that the ends of each heater are
4 inches (102 mm) from side wall. See Figure 4.

2

INSTALLATION AT CORNER