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Welcome
Read this manual before installing or operating this vent-free firebox.
A. Congratulations
Congratulations on selecting a Monessen Hearth vent-free
firebox. It is designed to provide the utmost in safety, reli-
ability, and efficiency.
As the owner of a new vent-free firebox, you'll want to read
and carefully follow all of the instructions contained in this
manual. Pay special attention to all Cautions and Warn-
ings.
DEALER: Fill in
your name, address,
phone and email
information here and
firebox information
below.
Firebox Information:
Brand: ________________________________________________ Model Name: ___________________________
Serial Number: __________________________________________ Date Installed: __________________________
Hearth & Home Technologies
7571 - 215th Street West
Lakeville, MN 55044
CSA/ANSI Z21.91:20 VENTLESS FIREBOX ENCLOSURES FOR GAS-FIRED
UNVENTED GAS LOG TYPE ROOM HEATERS
FOR USE WITH LISTED CSA/ANSI Z21.11.2:19 GAS-FIRED UNVENTED
ROOM HEATERS NOT TO EXCEED 40,000 BTU/HR (11,723 W)
THIS INSTALLATION MUST CONFORM WITH LOCAL CODES OR, IN THE
ABSENCE OF LOCAL CODES, WITH THE NATIONAL FUEL GAS CODE,
ANSI Z223.1/NFPA 54, OR THE NATURAL GAS AND PROPANE
INSTALLATION CODES.
MFG. DATE:
ELECTRICAL: LESS THAN 3 AMPS, 115V., 60 Hz
DO NOT REMOVE OR COVER THIS LABEL
NOT FOR USE WITH SOLID FUEL
NOT FOR USE WITH GLASS DOORS
NOT INTENDED FOR USE AS A PRIMARY HEAT SOURCE
Model No:
Serial No:
Please retain this manual for future references.
Local Dealer Information
Dealer Name: ________________________________________________________
Address: ____________________________________________________________
____________________________________________________________
Phone: _____________________________________________________________
Email: _____________________________________________________________
SERIAL NO:
CLEARANCE TO COMBUSTIBLES:
FIREBOX BACK = 0 in.
FIREBOX SIDES = 0 in.
FIREBOX TOP = 0 in.
FIREBOX BOTTOM = 0 in.
SIDE WALL, FROM FIREBOX OPENING =
9 in.
CEILING, FROM FIREBOX OPENING = 42
in.
Combustible in.
Noncombustible in.
Monessen • BUF32/36/42 Owner's Manual • 4139-900 • Rev A • 01/21
This manual should be retained for future reference. We
suggest that you keep it with your other important docu-
ments and product manuals.
Your new Monessen vent-free firebox will give you years of
durable use and trouble-free enjoyment. Welcome to the
Monessen family of firebox products!
Monessen is a registered trademark of Hearth & Home
Technologies.
File No.: MH62953
A
B
C
D
E
F
6
7
8
9
10
11
3
4
5
6
7
8
Mantel Heights
15
14
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12
11
10
9
8
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5
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M
3
L
K
2
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1
H
G
F
E
D
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B
A
Measured from top of hood
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H
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M
N
O
12
13
14
15
16
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20
9
10
11
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18
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16
R
Q
P
O
P
Q
R
21
22
23
18
19
20
4137-990A
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