Qmark CWH3000 User Manual [en, es, fr]

CWH 3000

!

(Series B)

Fan Forced

Wall Heaters

5-25/32"

1

(400mm)

9-3/16"

1

487mm)

(

FILE #E21609

1-1/2"
38mm)

(

-3/4"

3

(95mm)

8-1/4"

1

(464mm)

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 instructions 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

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.

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.

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, 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.

10. Do not install heater upside down or sideways. Do not use
heater without grille.

11. 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.

SAVE THESE INSTRUCTIONS

1

NOTE: This heater has a continuous fan-only feature. See
page 3 for details.

Installation of Recessed Back Box

in New Construction

1. Mounting Back Box (See Figure 1).
. Place the back box between two 16" (406 mm) center-to-

a

center wall studs at the desired mounting height but no
closer than 8" (203 mm) to adjacent wall or floor.

Note: If wall studs are spaced greater than 16” on center, addi­tional framing supports may be necessary.

ACK BOX

B

Fig. 1: Locating Recessed Back Box in New Construction

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" (12.7 mm) from fin­ished wall surface).

c. Secure the back box in position with wood screws or nails

as shown in Figure 1.

2. Power Supply Wiring (See Figure 1)

NOTE: Wire compartment volume - 119in

3

(1950cm3).

a. Run a power supply cable into the knockout area in the

upper right hand corner of the back box. All wiring must be
in accordance with National and Local Electrical Codes.
Refer to Table 1 for correct wire size.

b. Remove disconnect switch bracket by loosening two

screws on the right side.

c. Install a cable clamp in the “knockout” in the top of the

back box.

d. Insert power supply cable through cable clamp, allowing at

least 6" (152mm) of leads to extend inside the back box.
Connect the blue lead wires of disconnect switch to the
supply wire leads using wire connectors (see wiring dia­gram, pg. 3.)

e. Ground the back box by connecting the supply ground lead

wire to the green ground screw located in the inside top of
the back box.

f. Secure disconnect switch bracket in place by tightening

screws.

Installation of Recessed

Back Box in Existing Construction

1. Provide a wall opening 14-1/2" (362mm) wide by 18-1/2"

(470mm) high at the desired mounting height, but no closer
than 8" (203mm). (See Figure 2.)

Note: Locate so at least one side of opening is at wall stud.

2. Power Supply Wiring

NOTE: Wiring Compartment Volume - 119in
a. Run a power supply cable into the area above the top of the

wall opening. All wiring must be in accordance with National
and Local electrical codes. Refer to Table 1 for correct wire
size.

b. Remove disconnect switch bracket by loosening the two

screws on the right side.

c. Install a cable clamp in the “knockout” in the top of wall

back box.

d. Insert power supply cable through cable clamp, allowing

approximately 6" (152mm) of cable length to remain inside
the back box to facilitate connections.

3

(1950cm3).

ACK BOX

B

Fig. 2: Locating Recessed Back Box in Existing Construction

3. Mounting Back Box
a. Place the back box into wall opening flush with finished

wall surface on bottom and sides of box. (Top flange of
backbox should protrude approximately 1/2" or 12.7mm
from finished wall surface).

b. Secure the back box in place with wood screws or nails.

4. Wiring Disconnect Switch
a. Connect the power supply wires to the blue wires of the

disconnect switch using wire connectors (see wiring dia­gram, pg. 3)

b. Ground the back box connecting the supply ground lead

wire to the green ground screw located in the inside top of
the back box.

c. Secure disconnect switch bracket in place by tightening

screws.

TABLE 1

CATALOG WIRE
NUMBER VOLTS PHASE WATTS AMPS GAUGE

CWH3150 120 1 1500 12.5 12
CWH3180 120 1 1800 15.0 12

CWH3404* 240/208 1

CWH3407* 277/240 1
CWH3307* 277 1 3000/1500 10.8/5.4 14

CWH3408* 208 1 4000/2000 19.2/9.6 10
CWH34083 208 3 4000 11.1 14
CWH34043 240 3 4000 9.7 14
CWH3504 208/240 1 3600/4800 17.3/20.0 10
CWH3507 240/277 1 3600/4800 15.0/17.3 10
CWH3508 208 1 4800 23.1 10
CWH35083 208 3 4800 13.4 12
CWH35043 240 3 4800 11.6 14
CWH3203 347 1 2000 5.8 14
CWH3206 600 1 2000 3.3 14
CWH3153 347 1 1500 4.3 14
CWH3156 600 1 1500 2.5 14
CWH3303 347 1 3000 8.6 14
CWH3306 600 1 3000 5 14
CWH3403 347 1 4000 11.5 14
CWH3406 600 1 4000 6.7 14
CWH3503 347 1 4800 13.8 12
CWH3506 600 1 4800 8 14

* Factory wired for higher wattage. Field convertible to half wattage.

2

4000/3000 16.7/14.5 10
2000/1500 8.3/7.2 12
4000/3000 14.5/12.5 12
2000/1500 7.2/6.3 12

MMII NN.. SSUUPPPPLLYY

M

ANUAL

RESET

LIMIT

D

ISCONNECT

L

1

L2 or N

ELEMENT

ELEMENT

F

.D.

FAN MOTOR

T-STAT

L

1

OFF

CYC

L2

DISCONNECT

L1

L2 or N

F.D.

L1

OFF

CYC

L2

FAN MOTOR

MANUAL

RESET

LIMIT

ELEMENT

MANUAL

RESET

LIMIT

DISCONNECT

L1

L2 or N

ELEMENT

ELEMENT

F.D.

FAN MOTOR

T-STAT

L1

OFF

C

YC

L

2

T-STAT

DISCONNECT

L1

L2 or N

F.D.

L1

OFF

C

YC

L2

FAN MOTOR

MANUAL

RESET

LIMIT

ELEMENT

MANUAL

RESET

LIMIT

DISCONNECT

L

1

L2 or N

ELEMENT

ELEMENT

F.D.

FAN MOTOR

FAN MOTOR

MANUAL

RESET

LIMIT

T-STAT

L

1

OFF

CYC

L2

T-STAT

L1

OFF

CYC

L2

DISCONNECT

L1

L2 or N

F.D.

T-STAT

SEC

PRI

ELEMENT

ELEMENT

MOUNT BACK
BOX TO WALL

USING REAR

MOUNTING

RACKETS

B

3-13/16" (97mm)

19" (482mm)

. Push disconnect switch into ON position.

5

6. Mount the grille using the four (4) long screws provided.
The screws thread into holes located in the side flanges
of the back box.

7. Push thermostat knob onto thermostat shaft.

HANG FRAME

ON BACK

OX

B

15-5/32" (385mm)

Fig. 3: Surface Mounting Installation

Installation of Back box with

Surface-Mounting Frame

(See Figure 3)

. Secure back box to wall with knockouts in upper right hand

1

corner using screws and anchors.

2. Hang the surface-mounting frame on the back box. Ensure
that the back edge of the surface-mounting frame is flush
against the wall.

NOTE: If heater is located in a high traffic area where it may be
subjected to vandalism or abuse, take extreme care to see that
the box is firmly attached to the wall.

3. Power Supply Wiring

3

NOTE: Wiring Compartment Volume - 119in
a. Run a power supply cable into the area of the upper

right corner of the mounting frame. Arrangement of
wiring to this point must be in accordance with National
and Local codes. Refer to Table 1 on page 2 for
proper wire size.

NOTE: If the wiring is to run through the wall, cut a hole in the
area of the top of the wall box. Run the supply wire through this
hole. Then remove the “knockout” from the top of the box and
proceed to step C.

b. Remove the “knockout” on the top side of the frame.
c. Remove disconnect switch bracket by loosening the two

d. Feed the power supply cable through the frame allowing

screws on the right side.

6" (152mm) of lead to remain inside the back box.

e. Secure the power supply cable to the back box

(using cable clamp, connector, or other suitable strain
relief) allowing 6" (152mm) of lead to remain inside the
back box.

f. Connect supply wires to blue wires of disconnect switch

using wiring connectors (see wiring diagram).

g. Ground the back box by connecting the supply ground

leadwire to the green ground screw located in the
inside top of the back box.

h. Secure disconnect switch bracket in place.

Installation of Heater Assembly and Grille

After back box is completely installed and no further construc­tion dirt is expected, clean debris from back box, remove heater
assembly from its carton, then refer to Figure 4 and proceed as
follows:

1. Insert the heater assembly into back box, placing
the four mounting holes (with key-hole slots) over the
screws in the back box. Tighten all screws securely.

2. If surface-mounting frame is used, ensure that the
frame is even with all four heater assembly tabs before
tightening screws.

3. Connect the two disconnected switch wires to the heater
control switch (thermostat) leads using wire nuts. After
connection, push wires back into the opening.

4. Turn thermostat to the extreme counterclockwise
position.

(1950cm3).

POWER LEADS

Fig. 4

ACK

B

OX

B

EATER

H

SSEMBLY

A

DISCONNECT

SWITCH

THERMOSTAT

KNOB

WIRING DIAGRAMS

iagram 1

D

ed

R

umper

J

ire

W

1500, 1800, 4800, 4000, & 3000 WATT HEATERS

120V, 208V, 240V, or 277V (Full wattage heaters can be converted to half
wattage by removing the red jumper wire connecting the top and bottom element
terminals.) See wiring diagram no. 6 for 4800W, 208V.

NOTE: Conversion to half wattage not applicable to CWH3150 and CWH3180.

Diagram 2

2000 & 1500 WATT HEATERS

208V, 240V, OR 277V

Diagram 3

4800, 4000, & 3000 WATT HEATERS

347V, 600V

3

GRILLE

!

!

S

ELEMENTS

F

AN

MOTOR

FAN

D

ELAY

RELAY

FIELD WIRING

G

ND

THERMOSTAT

M

ANUAL

RESET

1

684

6

2

WIRING DIAGRAM

FOR THREE PHASE WALL HEATERS

CYC

L1

L2

OFF

D

ISCONNECT

ELEMENTS

FIELD WIRING

G

ND

DISCONNECT

FAN

M

OTOR

FAN

DELAY

MANUAL

RESET

RELAY

1

0

8

4

6

2

CYC

L1

L2

OFF

E

LEMENTS

FAN

MOTOR

F

AN

DELAY

R

ELAY

FIELD WIRING

GND

THERMOSTAT

MANUAL

RESET

1

6

8

4

6

2

CYC

L1

L

2

OFF

DISCONNECT

E
C.

Transformer

Diagram 4

WIRING DIAGRAMS (Conʼt)

P
R

.

I

Motor

Element

Heat
Thermostat

Time Delay
For Fan

Manual
Reset

2

L

C

1

8

C

4

0

O

L1

Fan Only

witch

S

C

6

2

L2/N

L1

o

T
Disconnect
Switch

1500/2000 WATT

HEATERS

47V, 600V

3

OTE: For best results, the heater should be left “ON” constant-

N

ly during the heating season because the thermostat, when prop­erly set, will maintain the desired temperature.

Maintenance

TO RESET MANUAL RESET LIMIT
Your heater is equipped with a manual reset safety thermal limit
control that will automatically turn the heater off to prevent a fire if
the heater overheats. This control is located on the fan panel

ssembly between the element and fan blade and marked “reset”.

a
The red reset button can be seen through the front grille when the
heater is installed. To reset, allow the heater to cool, then push the
red button that is visible through the hole in the fan panel. The
heater should immediately return to normal operation.
Once each year the heater should be cleaned to remove dust and
other foreign material which has collected during the heating sea­son. This is a simple operation when performed as follows:

1. Turn off the electric power at main line switch (or remove all
uses) to disconnect electric power from the heater.

f
THIS IS IMPORTANT.

2. Remove the grille (Figure 4) and turn the disconnect switch to

the OFF position.

CAUTION

DO NOT USE WATER OR DAMP CLOTH FOR CLEANING AND DO
NOT DISTURB THE HEATING ELEMENT.

3. With a vacuum cleaner nozzle or dust cloth, remove dust

and other foreign material.

4. After cleaning, turn disconnect switch to ON position and

reinstall the grille.

5. Turn on the main line switch (or replace fuses) to restore

power to the heater. The heater is now ready for another
season of operation.

THREE PHASE

Diagram 5

Diagram 6

OPERATION OF THE MANUAL RESET SAFETY THERMAL LIMIT CON-

CAUTION

TROL IS AN INDICATION THAT THE HEATER HAS BEEN SUBJECTED
TO SOME ABNORMAL CONDITION. IT IS RECOMMENDED THAT THE
HEATER BE CHECKED BY A REPUTABLE ELECTRICIAN OR REPAIR
SERVICE TO ENSURE THE HEATER HAS NOT BEEN DAMAGED.

1. Rotate the thermostat knob fully clockwise. This should
energize the heating elements and fan causing warm air to
flow from the hot air discharge at the openings in the
bottom of the grille.

2. After the operation check, rotate the thermostat knob to
the desired position to obtain room comfort.

3. For continuous fan-only operation (elements will not be
energized) rotate thermostat knob where indicator dot on
knob is aligned with FAN.

4. There will be a short delay from the time the unit is turned
on until the fan engages. This is to allow the elements time
to warm up. The fan will also continue to run once the unit
is turned off to allow the elements time to cool.

Operation

WALL HEATERS

4800 WATT SINGLE

PHASE HEATERS

208V

NAMEPLATE

MODEL NO. CWH3408B DATE CODE: 0402
FAN FORCED WALL HEATER
APPAREIL DE CHAUFFAGE MURAL À AIR PULSÉ
VOLTS AC 60HZ WATTS PHASE

208 4000 1
MUST BE USED WITH BACK BOX
DO NOT OPERATE WITHOUT FRONT COVER IN PLACE.
DOIT ÉTRE UTILISÉ AVEC BOÎTIER ARRIÈRE AWH-BB
NE PAS UTILISER SI LE COUVERCLE AVANT NʼEST PAS EN PLACE.

MARLEY ENGINEERED PRODUCTS
BENNETTSVILLE, SC 29512 4104-2046-058

4

7746 LISTED

ROOM HEATER

Replacement Parts

a

b

c

d

e

f

g

Z

Y

Key
No. Description Part Number

1 Knob 3301-2016-000
2 Grille 2501-2019-001
3 Element: CWH1512 120V/1500W 302012827

CWH1812 120V/1800W 302012828
CWH3208B 208V/2000W 302015801
CWH3408B 208V/4000W 302012807
CWH34083B 208V/4000W/ 3Ph. 1802-2075-800
CWH3508B 208V/4800W 1802-2075-801
CWH35083B 208V/4800W/3Ph. 1802-2075-801
CWH3204B 240V/2000W 302015802
CWH3404B 240V/4000W 302012808
CWH34043B 240V/4000W/3Ph. 1802-2075-802
CWH3504B 240V/4800W 302012810
CWH35043B 240V/4800W/3Ph. 1802-2075-803
CWH3157B 277V/1500W 302015806
CWH3207B 277V/2000W 302015803
CWH3307B 277V/3000W 302012806
CWH3407B 277V/4000W 302012809
CWH3507B 277V/4800W 302012811
CWH3153B 347V/1500W 302012824
CWH3203B 347V/2000W 302012808
CWH3303B 347V/3000W 302012818
CWH3403B 347V/4000W 302012821
CWH3503B 347V/4800W 302012823
CWH3156B 600V/1500W 302012816
CWH3206B 600V/2000W 302012818
CWH3306B 600V/3000W 302012820
CWH3406B 600V/4000W 302012822

CWH3506B 600V/4800W 302012824
4 Manual Limit 4520-2017-000
5 Fan Delay 410740000
6 Fan Blade 490030103
7 Motor: 120V 3900-2010-003

208V 3900-2010-000

240V 3900-2010-000

277V 3900-2010-001

347V *3900-2010-000

600V *3900-2010-000
8 Thermostat 5813-2059-000

Reference Data

atalog

C
Number Volts Ph. Watts

CWH-3208 1 2000
CWH-3408 208 1 4000
CWH-34083 3 4000

CWH-3204 208/ 1 1500/2000
CWH-3404 240 1 3000/4000

CWH-34043 240 3 4000
CWH-3207 240/ 1 1500/2000

CWH-3407 277 1 3000/4000

Catalog
Number Volts Ph. Watts

CWH-3157
CWH-3307 1 3000

CWH-3508
CWH-35083 3 4800

CWH-3504

CWH-35043 240 3 4800

CWH-3507

277

208

208/

240

240/

277

1 1500

1 4800

1 3600/4800

1 3600/4800

9 Disconnect 120V, 208V/1PH, 240V/1Ph., 277V 410170001

208V/3Ph., 240V/3Ph., 347V, 600V 5216-2019-000

10 Motor Transformer 347V Heaters 5714-2014-001

600V Heaters 5814-2014-000

* See item 10. These heaters use a transformer to convert heater voltage to motor voltage.

LIMITED WARRANTY

All products manufactured by Marley Engineered Products are warranted against defects in workmanship and materials for one year from date of installation,
except heating elements which are warranted against defects in workmanship and materials for five years from date of installation. This warranty does not apply
to damage from accident, misuse, or alteration; nor where the connected voltage is more than 5% above the nameplate voltage; nor to equipment improperly
installed or wired or maintained in violation of the productʼs installation instructions. All claims for warranty work must be accompanied by proof of the date of
installation.
The customer shall be responsible for all costs incurred in the removal or reinstallation of products, including labor costs, and shipping costs incurred to return
products to Marley Engineered Products Service Center. Within the limitations of this warranty, inoperative units should be returned to the nearest Marley autho­rized service center or the Marley Engineered Products Center, and we will repair or replace, at our option, at no charge to you with return freight paid by Marley.
It is agreed that such repair or replacement is the exclusive remedy available from Marley Engineered Products.
THE ABOVE WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED. AND ALL IMPLIED WARRANTIES OF MER­CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE AFORESAID EXPRESSED WARRANTIES ARE HEREBY DIS­CLAIMED AND EXCLUDED FROM THIS AGREEMENT. MARLEY ENGINEERED PRODUCTS SHALL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES
ARISING WITH RESPECT TO THE PRODUCT, WHETHER BASED UPON NEGLIGENCE, TORT, STRICT LIABILITY, OR CONTRACT.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you. This war­ranty gives you specific legal rights, and you may also have other rights which vary from state to state.
For the address of your nearest authorized service center, contact Marley Engineered Products in Bennettsville, SC, at 1-800-642-4328. Merchandise returned
to the factory must be accompanied by a return authorization and service identification tag, both available from Marley Engineered Products. When requesting
return authorization, include all catalog numbers shown on the products.

HOW TO OBTAIN WARRANTY SERVICE AND
WARRANTY PARTS PLUS GENERAL INFORMATION

1. Warranty Service or Parts 1-800-642-4328

2. Purchase Replacement Parts 1-800-654-3545

3. General Product Information www.marleymep.com

Note: When obtaining service always have the following:

1. Model number of the product

2. Date of manufacture

3. Part number or description

ECR 38696 6/09 Part No. 5200-2299-007

470 Beauty Spot Rd. East
Bennettsville, SC 29512 USA