Marley K404A Installation & Maintenance Instructions Manual
“K” Series
!
(
400mm)
15-3/4"
(485mm)
19-1/8"
(35mm)
1
-3/8"
(95mm)
3
-3/4"
(463mm)
18-1/4"
(Model A)
Fan Forced
Wall Heaters
FILE #E21609
Installation & Maintenance Instructions
Dear Owner,
Congratulations! Thank you for purchasing this new heater manufactured by Marley Engineered
Products. You have made a wise investment selecting the highest quality product in the heating industry. Please carefully read 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.
WARNING
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 installation time to a minimum.
To reduce risk of fire or electric shock:
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. This heater is hot when in use. To avoid burns, do not let
bare skin touch hot surfaces.
SAVE THESE INSTRUCTIONS
... The Employees of
Marley Engineered Products
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. To prevent a possible fire, 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 doors, furniture, towels, or boxes.
7. A heater has hot and arcing (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.
1
IMPORTANT
!!!
IN. 36” (915mm)
M
o ceiling
t
WARNING
DO NOT INSTALL HEATER UPSIDE DOWN OR SIDE-
AYS.
W
DO NOT USE HEATER WITHOUT GRILLE.
CAUTION
FOR WALL MOUNTING ONLY. DO NOT INSTALL HEATER
CLOSER THAN 8" (203 mm) TO THE FLOOR OR ANY
ADJACENT WALL SURFACE. DO NOT INSTALL CLOSER
THAN 36" (915 mm) TO THE CEILING.
Installation of Recessed Back Box
1. Mounting Back Box (See Figure 1).
a. Place the back box between two 16" (406mm)
center-to-center wall studs at the desired mounting
height but no closer than 8" (203mm) to adjacent wall
or floor.
Note: If wall studs are spaced greater than 16” on center,
additional framing supports may be necessary.
b. Align back box such that the bottom and sides will be
flush with finished wall surface (top flange of back box
should protrude approximately 1/2" (13mm) from fin-
ished wall surface).
c. Secure the back box in position with wood screws or
nails as shown in Figure 1.
GROUND
SCREW
BACK BOX
in New Construction
CABLE
CLAMP
POWER SUPPLY CABLE
8” MIN.
(203mm)
18-1/2” MIN.
470mm)
(
8” MIN.
203mm)
(
CABLE CLAMP
ROUND SCREW
G
BACK BOX
4-1/2” MIN.
1
(362mm)
” MIN.
8
(203mm)
OWER SUPPLY CABLE
P
NAIL OR SCREW
2 EACH SIDE)
(
Fig. 2: Locating Recessed Back Box in Existing Construction
Installation of Recessed
Back box in Exisiting Construction
1. Provide a wall opening 14-1/2" (362mm)wide x 18-1/2"
(470mm) high at the desired mounting height, but no
closer than 8" (203mm) to any adjacent wall or floor and
36” (915mm) to ceiling. (See Figure 2.)
NOTE: Locate so at least one side of the opening is at stud.
2. Power Supply Wiring
NOTE: (Wiring Compartment Volume - 119in3(1950cm3).
a. Run a power supply cable into the area above the top
of the wall opening.
b. Install a cable clamp in the knockout in the top of
back box.
c. Insert power supply cable through cable clamp, allow-
ing at least 6" (152mm) of cable length to remain
inside the back box to facilitate connections.
d. Ground the back box by connecting the supply ground
leadwire to the green ground screw located in the
inside top of the back box.
8” MIN.
(203mm)
NAIL OR SCREW
(2 EACH SIDE)
Fig. 1: Locating Recessed Back Box in New Construction
2. Power Supply Wiring (See Figure 1).
NOTE: Wire Compartment Volume - 119in3(1950cm3).
a. Run a power supply cable into the knockout area in
the upper right hand corner of the back box. Refer to
Figure 1.
b. Install a cable clamp in the “knockout” in the top of
the back box.
c. Insert power supply cable through cable clamp, allow-
ing at least 6" (152mm) of leads to extend inside the
back box.
d. Ground the back box by connecting the supply ground
leadwire to the green ground screw located in the
inside top of the back box.
3. Mounting Back Box
a. Place the back box into wall opening flush with fin-
ished wall surface on bottom and sides of box. (Top
flange of back box should protrude approximately 1/2"
(13mm) from finished wall surface).
b. Secure the back box in place with wood screws or nails.
NOTE: For correct wire sizing, please refer to the
National Electrical Code, Section 310. Only use copper
wire rated at least 75° C Do not use alluminum wire with
this unit.
2
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