Qmark CWH User Manual

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91/4”

(235 mm)

FILE #E21609

SWH ARCHITECTURAL

SERIES

121/8”

(308 mm)

1011/16”

(271 mm)

11/4”

(32 mm)

11”

(279 mm)

4”
(102 mm)

Fan Forced Wall Heaters

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. 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. 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,
boxes, or in ceilings.

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.

1

IMPORTANT

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WARNING

TO PREVENT HAZARD OF FIRE OR ELECTRICAL SHOCK, DO NOT
INSTALLWITHOUT BACK BOX.

CAUTION

TO PROVIDE FOR SAFE OPERATION, THE FOLLOWING CLEAR­ANCES MUST BE MAINTAINED.
WALL MOUNTING: • MINIMUM FOUR (4) INCHES (102MM) TO
FLOUR • MINIMUM TWELVE (12) INCHES (305MM) TO ADJACENT
WALLS • MINIMUM THIRTY SIX (36) INCHES (915MM) TO CEILING
CEILING MOUNTING: • MINIMUM TWELVE (12) INCHES (305MM TO
ANY WALL

CAUTION

THE HEATER IS HOT WHEN IN USE. DO NOT INSTALL THE
HEATER BEHIND DOOR, BEHIND TOWEL RACK, IN CLOSET,
WHERE CURTAINS OR DRAPES COULD TOUCH OR BECOME
SCORCHED BY HEATER, OR WHERE AIRFLOW TO HEATER MAY
BE OBSTRUCTED. KEEP ELECTRICAL CORDS, BEDDING, FURNI­TURE AND OTHER COMBUSTIBLES AWAY FROM HEATER.

GENERAL

The heater is designed for recessed installation in 2” X 4” (50 mm X 101
mm) stud or larger wall sections using the wall box provided. The heater
may also be surface mounted by using the Surface Mounting Frame,
Model SWHSM or semi-recess mounted by using a SWHS1 (for 1” (25
mm) recess frame) or a SWHS2 (for 2” (50 mm) recess frame). All three
accessories are ordered separately. The heater may be wired with stan­dard building wire (60°C). Refer to specification chart (see pg. 4) for cor­rect supply voltage and wire size.

NOTE: The optimum mounting height for this heater is 18" to 24" (450 to
600 mm) from floor to bottom of back box. Do not install closer than
4”(101 mm) from the floor.

For surface or semi-recess mounting, consult Installation Instructions
packed with SWHSM, SWHS1, SWHS2.

INSTALLATION OF BACK BOX IN NEW CONSTRUCTION

NOTE: If the finished wall surface is already up, follow instructions for

“INSTALLATION OF BACK BOX IN EXISTING CONSTRUCTION”.

1. Determine which side of the back box is to be mounted against a
stud and bend the tabs at the rear corners out 90 degrees so that
the back box will be square with the stud after installation. (See
Figure 1).

2. Remove one of the knockouts on socket side of the back box and
install a cable or conduit connector.

3. Positionback box against sideof studsandsecureusing nailsorscrews
as shown in Figure 1.

NOTE: The back box must be installed with the front edge flush with
the finished surface.

4. Run power supply cable through the connector, leaving about 8” of
wire inside the box.

5. Connect thesupply cableground wiretogreen ground screwprovided.

BEND

OUT
TAB

CABLE CLAMP

LEAD

HOLES

BACK BOX

SUPPLY
WIRING

CABLE

NOTE: Lead holes for a #8 sheet metal screw have been provided in the
sides of the back box.. After the finished wall or ceiling has been put up,
drive a # 8 sheet metal screw (recommended 1” long) through the side of
the box not mounted to the stud. This will prevent the back box from
pulling out when installing the heater assembly. (See Figure 1)

INSTALLATION OF BACK BOX IN

EXISTING CONSTRUCTION

1. Carefully mark and cut a holemeasuring 9-3/8" (235mm) wide by 11­1/8" (283mm) long. One edge of the hole must be cut along the
edge of a stud.

CAUTION

AN ELECTRICAL SHOCK, FIRE OR WATER DAMAGE COULD
RESULT IF WIRING OR PIPING IS DAMAGED DURING CUTTING.
MAKE SURE ALL WIRING AND PIPING ARE CLEAR OF AREA
BEFORE CUTTING.

2. Proceed to No. 1 through 5 (Installation of Back Box in New
Construction).

FIELD CONVERSION FOR LOWER WATTAGE RATING

NOTE: Refer to specification chart for lower wattage ratings which are

available.
To convert heater to lower wattage rating, completely remove red jumper

wire from both heating elements (See Figure 2). Discard this jumper. Be
sure remaining wires are securely connected.

Remove red
jumper for
lower wattage
rating

Figure 2

a

CAUTION

DO NOT USE A REMOTE THERMOSTAT WITH THIS HEATER.
BUILT IN THERMOSTAT CYCLES THE HEATING ELEMENT ONLY.
FAN DELAY CONTROL AUTOMATICALLY TURNS FAN ON AND
OFF, AND PROVIDES A FAN DELAY OFF FEATURE TO REMOVE
RESIDUAL HEATAFTER THERMOSTAT HAS TURNED HEATING
ELEMENTS OFF. WIRING OF HEATER IN ANY MANNER WHICH
DEFEATS THE FAN DELAY OFF FEATURE CAN RESULT IN
OVERHEATINGAND PERMANENT DAMAGE TO HEATER,AND
WILL VOID THE WARRANTY.

INSTALLATION AND WIRING OF HEATER / FAN ASSEMBLY

1. Following wiring diagram (Figure 3) connect supply wiring to heater
lead wires in back box.

NOTE: For 120 and 277 volt heaters connect the white neutral supply
lead to the heaters white pigtail lead, and connect the black supply lead
to the heater black pigtail lead. For 208 and 240 volt heaters change the
color of the heaters white pigtail lead to black by wrapping with black
electrical tape. (Most electrical codes require the supply leads to be con­nected to black leads). Then connect the two black supply leads to the
two black receptacle leads.

2. Secure supply ground wire under green ground screw in back box.

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Figure 1

NAILS OR

SCREWS (2)

2