Williams 2001622A,2001621A,3501522A,3501521A,3501922A,3501921A,5001522A,5001521A,5001922A,5001921A,6501522A,6501521A,6501922A,6501921A Product Sheet

VENTED ROOM HEATERS

Enjoy instant warmth plus lower heating cost with
traditional enclosed glass-front “fireplace-look”
heaters. These vented room heaters provide comfort
for hard-to-heat areas and are designed to give you
maximum efficiency, low fuel consumption and
quiet operation.

FEATURES

• No electricity required

• “Matchless” pilot igniter

• Burners engineered for quiet operation
and maximum heat efficiency

• Louvered-top design and front grille
for improved heat circulation

• Factory-installed ceramic fiber logs

(fireplace-look models)

• Natural or propane models
(conversion kits available)

• Automatic temperature and safety controls

• Resettable vent-limit safety switch

35,000 - 65,000 BTU/hr.

ENCLOSED COMPACT MODEL

FOR SMALLER ROOMS

35,000 - 65,000 BTU/hr. 20,000 BTU/hr.

VENTED ROOM HEATERS

MODEL NO.

NATURAL PROPANE

2001622A 2001621A

3501522A 3501521A

3501922A 3501921A

5001522A 5001521A

5001922A 5001921A

6501522A 6501521A

6501922A 6501921A

FEATURES

OPERATES W/O

ELECTRICITY

RESETTABLE

VENT SWITCH

CONVERTIBLE

GAS VALVES

NATURAL PROPANE WIDTH DEPTH HEIGHT

3502522A 3502521A NO BLOWER 35,000 25,000

3502922A 3502921A INCLUDED 35,000 25,000 25 16 28 ⅞

5002522A 5002521A NO BLOWER 50,000 34,500 30 17 33 ¼

5002922A 5002921A INCLUDED 50,000 34,500 30 17 33 ¼

6502522A 6502521A NO BLOWER 65,000 47,000 34 20 ½ 33

6502922A 6502921A INCLUDED 65,000 47,000 34 20 ½ 33

BLOWER

OPTION

NO BLOWER

NO BLOWER

INCLUDED

NO BLOWER

INCLUDED

NO BLOWER

INCLUDED

MODEL NO.

BTU/hr.

INPUT

20,000 15,500 23 12 3/8 21 9/16 MILLIVOT 3 45

35,000 25,000 25 16 28 ⅞ MILLIVOT 4 74

35,000 25,000 30 16 28 ⅞ MILLIVOT 4 83

50,000 34,500 30 17 33 ¼ MILLIVOT 4 103

50,000 34,500 30 17 33 ¼ MILLIVOT 4 112

65,000 47,000 34 20 ½ 33 7/8 MILLIVOT 5 128

65,000 47,000 34 20 ½ 33 7/8 MILLIVOT 5 137

BLOWER

OPTION

BTU/hr.

OUTPUT

BTU/hr.

INPUT

ENCLOSED FRONT

FIREPLACE FRONT

BTUHR.
OUTPUT

DIMENSIONS (INCHES)

WIDTH

DIMENSIONS (INCHES) THERMOSTAT

25

DEPTH HEIGHT

16 28 ⅞

CABINET OR WALL

CABINET OR WALL

CABINET OR WALL

CABINET OR WALL

7

/8

CABINET OR WALL

7

/8

CABINET OR WALL

THERMOSTAT

TYPE SOLD

SEPARATELY

TYPE SOLD

SEPARATELY

VENT SIZE

INCHES

VENT

SIZE

INCHES

4 81

4 90

4 108

4 117

5 135

5 144

SHIPPING

WEIGHT

LBS.

SHIPPING

WEIGHT

LBS.

Elevation rating from sea level to 2,000' Consult Owner’s Manual for installation of product at elevations over 2000' 1/2ʺ Gas Connection

FEATURES

“MATCHLESS” PILOT IGNITER

All models include a “matchless” pilot igniter that assures convenient pilot
lighting without matches.

CONTEMPORARY FINISH

Black, powder-coat, heat-resistant finish to compliment any decor.

INTERIOR FURNACE CLEARANCES

MODEL

SERIES

200 SERIES

350 SERIES

500 SERIES

650 SERIES

A B C D E

2 36 3 24 17

6 57 6 24 21 ¼

6 57 6 24 23

6 57 6 24 25 ½

A

B

D

C

E

WARNING: This product can expose you to chemicals including epichlorohydrin which is known to the State of California

to cause cancer and birth defects and/or other reproductive harm. For more information go to www.p65warnings.ca.gov

ACCESSORIES

THERMOSTAT SOLD SEPARATELY part number P322016

BLOWER
MODEL 2102 quiet, heavy-duty blower is available for larger rooms where faster heat

circulation is desired. 150 CFM, 120V. Shipping weight 9 lbs.

FLOORBOARDS

Contemporary black color to match the heater with scratch-resistant powder-coat finish.

Model 4163 for 50,000 and 65,000 BTU/hr. models. (Oversized) shipping weight 16 lbs.
Model 4167 for 20,000 and 35,000 BTU/hr. models. (Oversized) shipping weight 10 lbs.

CONVERSION KITS

MODEL

SERIES

200 SERIES

350 SERIES

500 SERIES

650 SERIES

ANY WARRANTY CONSIDERATIONS ARE CONTINGENT ON INSTALLATION BY
A QUALIFIED INSTALLER (CONTRACTOR). SELF-INSTALLATION IS PROHIBITED
AND WILL INVALIDATE YOUR WARRANTY.

• Read owner’s manual before using/installing.

• Photographs are representative only.

• Check local codes and ordinances for permitted uses.

• Consult installation manual for clearances prior to installation.

• We reserve the right to amend product specifications without notice.

• Installation and servicing recommended by a qualified service person.

•

Please read the warranty for any limitations of disclaimers. Combustion chamber carries a 10-year
limited warranty. All other parts carry a one-year limited warranty.

•

Venting must comply with the “Venting and Chimney Requirements” section of the instruction manual.

•

Massachusetts Approval Gl-0816-23.

NATURAL TO

PROPANE

PROPANE TO

NATURAL

8945 8949

8946 8950

8947 8951

8948 8952

IMPORTANT

250 W. Laurel Street · Colton, CA 92324 USA Subject to change without notice © 2021 Williams L1013, 4/21