Qmark CRN User Manual

N Series

!

Overhead Infrared

Heaters

Installation & Maintenance Instructions

Dear Owner,

Congratulations! Thank you for purchasing this new heater 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 - This instruction sheet contains vital infor-

mation for the proper installation, use and efficient opera­tion of the heater. Carefully read the manual before installa­tion, 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 continuing safe opera­tion and instructing future users.

RISK OF FIRE, ELECTRICAL SHOCK OR FALLING:

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 NOT suitable for use in hazardous loca­tions as described by the National Fire Protection
Association (NFPA). This heater has hot and arcing or
sparking parts inside. DO NOT use in areas where
gasoline, paint or other flammable liquids or stored.

5. Do not use this heater in areas where corrosive agents
such as

Muriatic Acid • Ethylene Dichloride (Mastics-Glues-Adhesives)

• Chlorine • Chlorides • Fluorides • Perchlorethylene •
Trichlorethylene • Hydrochloric Acid • Halogenated
Hydrocarbons • Industrial Caustics.

6. This heater is intended for ceiling installation ONLY. The
following clearances MUST be maintained:
a) Top of heater to ceiling - 3 in (76 mm).
b) Bottom of heater to floor - 10 ft (3048 mm).
c) Side of heater to wall - 12 in (305 mm).
d) End of heater to wall - 12 in (305 mm).
e) Side of heater to side of adjacent heater - 36 in

f) End of heater to end of adjacent heater - 36 in (914

7. Heater MUST be securely fastened to the building
structure to prevent it from falling.

8. DO NOT stack or store combustible materials in the
radiation path under the heater. At least 5 feet (1524
mm) clearance MUST be maintained between bottom
of heater and combustibles stored.

9. Do NOT use as a residential or household heater.

Ammonia • Carbon tetrachloride • Sulphuric acid •

(914 mm).

mm).

SAVE THESE INSTRUCTIONS

SPECIFICATIONS

Ø1.125

SERVICE

ENTRANCE

OPENING

4X1/4" Ø MOUNTING
HOLE FOR "S" HOOKS

1.000±.062

(3.500)

90˚

(8.375)

(4.500)

(10.000)

Ø.475

VIEW SHOWN WITH
COVER REMOVED

("B")

("A")

TOP VIEW

Heater

Wall

Wall

12" (304.8mm) Min.

12" (304.8mm) Min.

SIDE VIEW

H

Wall

Floor

Ceiling

Chain

1

3" (76.2mm) Min.

10' (3048mm) Min.

!

Model Dimensions Wire Ga.
Number Volts Watts Amps BTU A Length B Width D Depth (Min.)

N1011B 120 8.3
N1081B 208 4.8 27.125” 8.375” 3.5”
N1021B 240 1000 4.2 3412 (689 mm) (212 mm) (88.9) 14 Ga.

1511B 120 12.5

N
N1581B 208 7.2 35.625” 8.375” 3.5”
N1521B 240 1500 6.3 5118 (905 mm) (212 mm) (88.9) 14 Ga.
N1571B 277 5.4
N1531B 347 4.3

N2001B 208 9.6
N2021B 240 2000 8.3 6824 46.625” 8.375” 3.5” 14 Ga.

2071B 277 7.2 (1184 mm) (212 mm) (88.9)

N
N2031B 347 5.8

N2501B 208 12.0
N2521B 240 2500 10.4 8530 53.375” 8.375” 3.5” 14 Ga.
N2571B 277 9.0 (1356 mm) (212 mm) (88.9)
N2531B 347 7.2

INSTALLATION

The Marley Engineered Products
N Series radiant heater is shipped fully
assembled. The heater can be hung from
the ceiling by chains or rigid angle brackets
attached to the heater

rackets located on the back of the heater.

b
Hanging chain kits are available for these
heaters that will allow for installations to 6
feet from the ceiling.) (Model MHK)
Minimum spacings:

Ceiling to top of heater is 3 in.

Wall to sides of heater is 12 in.

loor to bottom of heater is 10 feet.

F

CAUTION

Installer should consult state and local
codes and meet any applicable
requirements regarding the installation.

a

Figure 1

Figure 2

2