Monessen Hearth ARTISAN Series User manual
1
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
Installation Manual
Installation and Appliance Setup
INSTALLER: Leave this manual with party responsible for use and operation.
OWNER: Retain this manual for future reference.
NOTICE: DO NOT discard this manual!
In the Commonwealth of Massachusetts
installation must be performed by a licensed
See Table of Contents for location of
additional Commonwealth of Massachusetts
• DO NOT-
mable vapors and liquids in the vicinity of this
• What to do if you smell gas
- DO NOT
- DO NOTDO
NOT
- Immediately call your gas supplier from
-
- If you cannot reach your gas supplier, call
• Installation and service must be performed
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly
could result in serious injury, death, or
property damage.
ARTISAN
SERIES
Provisions for adequate combustion and
DO NOT install this appliance in a bedroom or
Models:
AVFL42NIP-BU/PIP-BU
AVFL42NIP-RB/PIP-RB
AVFL48NIP/PIP
AVFLST48NIP/PIP
AVFL60NIP-B/PIP-B
This appliance may be installed in an after-mar-
ket, permanently located, manufactured (mobile)
This appliance is only for use with the type of
ance is not convertible for use with other
2Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
Safety Alert Key:
• DANGER! Indicates a hazardous situation which, if not avoided will result in death or serious injury.
• WARNING! Indicates a hazardous situation which, if not avoided could result in death or serious injury.
• CAUTION! Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
• NOTICE: Used to address practices not related to personal injury.
Table of Contents
Installation Standard Work Checklist3
4
4
4
4
4
4
2 Getting Started
5
5
5
8
3 Framing and Clearances
10
14
18
18
4 Appliance Preparation
19
20
5 Gas Information
21
21
21
23
24
24
25
25
6 Electrical Information
27
7 Final Installation
29
30
30
30
32
35
8 Finishing
38
39
41
43
WARNING! RISK OF FIRE OR EXPLOSION AND ASPHYXIATION HAZARD
Improper adjustment, alteration, service, maintenance, or installation of this heater
Ź
Ź
Ź
Ź
Ź
Ź
3
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
Installation Standard Work Checklist
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4Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
those consisting entirely of steel, iron, brick, tile, concrete,
Materials that are reported as passing ASTM E 136,
Standard Test Method for Behavior of Materials in
a Vertical Tube Furnace at 750 ºC shall be considered
non-combustible materials.
Materials made of or surfaced with wood, compressed pa-
F. Electrical Codes
NOTICE: This appliance must be electrically wired
and grounded in accordance with local codes or, in the
absence of local codes, with National Electric Code
ANSI/NFPA 70-latest edition or the Canadian Electric
Code CSA C22.1.
-
tected with ground-fault circuit-interrupter protection,
in compliance with the applicable electrical codes,
when it is installed in locations such as in bathrooms
NOT INTENDED FOR USE AS A PRIMARY HEAT SOURCE.
This appliance is tested and approved as either supplemen-
NOTICE: This installation must conform with local codes.
In the absence of local codes you must comply with the
National Fuel Gas Code, ANSI Z223.1-latest edition in
the U.S.A.
1
C. High Altitude Installations
NOTICE: If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
When installing above 2000 feet elevation:
Check with your local gas utility to determine proper
GAS PRESSURES
NOTE:
NATURAL PROPANE (LP)
Inlet Minimum
Inlet Maximum
Setting
WARNING: This product and the
fuels used to operate this product (liquid
propane or natural gas), and the products
of combustion of such fuels, can expose
you to chemicals including benzene, which
is known to the State of California to cause
cancer and reproductive harm. For more
information go to: www.P65Warnings.
ca.gov.
MODEL: AVFL42NIP-BU, AVFL42PIP-BU, AVFL42NIP-RB,
AVFL42PIP-RB, AVFL48NIP, AVFL48PIP, AVFLST48NIP,
AVFLST48PIP, AVFL60NIP-B, AVFL60PIP-B
LABORATORY: UNDERWRITERS LABORATORIES, INC.
(UL)
TYPE: Unvented Room Heaters
STANDARD: ANSI Z21.11.2:19
Models Maximum
Input
BTU/h
Minimum
Input BTU/h
Size (DMS)
(0-2000 FT) 34,000 23,500
(0-2000 FT) 33,000
(0-2000 FT) 24,500 17,500
(0-2000 FT) 24,000 19,000
(0-2000 FT) 39,000 27,500
(0-2000 FT) 38,000 31,000
(0-2000 FT) 39,000 27,500
(0-2000 FT) 38,000 31,000
(0-2000 FT) 40,000 28,000
(0-2000 FT) 39,000 30,500
5
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
2 Getting Started
A. Design and Installation Considerations
jurisdiction over restrictions, installation inspection and
Before installing, determine the following:
Improper installation, adjustment, alteration, service or
Installation and service of this appliance should
C. Inspect Appliance and Components
• Carefully remove the appliance and components from
• The accessories and fronts may be shipped in separate
•Read all of the instructions before starting the instal-
lation. Follow these instructions carefully during the
WARNING! Risk of Fire or Explosion! Damaged parts
could impair safe operation. DO NOT install damaged, in-
complete or substitute components. Keep appliance dry.
B. Tools and Supplies Needed
Before beginning the installation be sure that the following
• Tape measure
• Pliers
•
•
•
• Level
• Manometer
•
• Phillips screwdriver
•
• Plumb line
• Safety glasses
•
•
•
•
•
•
• Piping which complies with local codes
•
for, and the warranty will be voided by, the following actions:
WARNING! Risk of Fire, Explosion or Electric Shock!
DO NOT use this appliance if any part has been under
appliance and to replace any part of the control system
and/or gas control which has been under water.
•
• Sediment trap
• Tee joint
• Pipe wrench
WARNING
This appliance is equipped for (natural or propane)
gas. Field conversion is not permitted.
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
D. Getting Started
have the following:
• Two (2) anchoring screws
appliances)
parts are missing or damaged, immediately inform the
Do not
attempt to install any part of the appliance unless you
have all parts in good condition.
F. Adequate Combustion Ventilation Air
unusually tight construction unless provisions are provided
3per kw)
of the aggregate input rating of all appliances installed in
3per kw) of the aggregate input rating of all
directly with the space in which the appliances are installed,
through openings not furnished with doors, are considered
where:
a alls and ceilings exposed to the outside atmosphere
have a continuous water vapor retarder with a rating of
112) or less with openings
gasketed or sealed, and
b eather stripping has been added to windows and
doors, and
c aulking or sealants are applied to areas such as joints
around window and door frames, between sole plates
panels, at penetrations for plumbing, electrical and gas
The following formula can be used to determine the maxi-
1+ L2
50
Consider two connecting rooms with an open area
between, with the following dimensions:
L1122
12 + 12) x (12) x (8)
50
If there were a door between the two rooms the calculation
12) x (12) x (8)
50
Do not install the heater:
•Where curtains, furniture, clothing, or
36" from the front of the heater.
•
•In windy or drafty areas.
E. Planning the Installation
When planning the installation of the appliance it is neces-
sary to determine where the appliance is to be installed
-
Appli-
ance Location (page 7, Figure 2.2) and Clearances and
Height Requirements (page 12, Figures 3.6 and 3.7)
sections and Appliance and Framing Dimensions (page
10 and 11, Figure 3.4 and 3.5) illustration found in this
NOTE: Be sure all packing material has been removed
Electrical Installation section (page 23). (Electrical con-
nections should only be performed by an experienced,
Connect the Gas (page 20, Figure 5.3)
WARNING
WARNING
Gloves are recommended when handling
with care.
7
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
W
H
Counter Appliance
If the area in which the heater may be
operated does not meet the required volume
for indoor combustion air, combustion and
ventilation air shall be provided by one
of the methods described in the National
Fuel Gas Code, ANSI Z223.1/NFPA 54, the
International Fuel Gas Code or applicable
local codes.
Figure 2.1
APPLIANCE LOCATION
This unvented gas heater requires no outside venting and
gas heater, it can be installed against (or recessed into)
Carefully select the best location for installation of your
•Clearance to side wall, ceiling, woodwork and window
Clearance and Height
Requirements section on Page 12 -
ances to combustibles must be maintained.
•
kitchen exhaust fans, ceiling fans, return air registers
• Installation must provide adequate ventilation and
• DO NOT INSTALL THIS MODEL IN A BEDROOM
OR BATHROOM.
•
away from furniture and draperies due to heat from
Figure 2.2
• -
•
to
• Do not install in the vicinity where gasoline or other
-
box must be kept clear and free from the combustible
NOTICE:
FOR DESIGN PURPOSES ONLY. Illustrations/diagrams
are not drawn to scale. Actual installation could vary due
to individual design preference.
-
tions step by step to ensure proper placement of appli-
WARNING
Appliance
8Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
•Any change to this appliance or its controls can be dangerous.
•
explosion or carbon monoxide poisoning.
•
•Do not use a blower insert, heat exchanger insert or other accessory, not approved for use with
this heater where applicable.
of high surface temperature and should stay away
an appliance, must be replaced prior to operating
before use and at least annually by a professional
required due to excessive lint from carpeting,
compartments, burners, and circulating air pas-
CARBON MONOXIDE POISONING: Early signs of
the absence of local codes, with the National Fuel
Gas Code, ANSI Z223.l/NFPA54.
appliance, and annual cleaning are necessary to avoid
from improper installation or operation, can settle on
Caution:
or aromatics (scents) may be reburned in the vent-free
unless the required volume of indoor combustion air is
provided by the method described in the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, the International
Fuel Gas Code
-
tight construction, additional mechanical ventilation is
components of this appliance are treated with certain
harmful but may produce annoying smoke and smells
appliance; possibly causing headaches or eye or lung
The initial break-in operation should last three to four
maximum ventilation by opening windows or doors to
initial break-in period will be slight and will disappear
feet, input ratings should be reduced 4 percent for each
G. Important Safety and Operating Information
WARNING
9
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
Figure 3.2 General Operating Parts
General Operating Parts
WARNING! Risk of Fire or Explosion! Appliance must
be set up for compatible gas type!
• This appliance is designed to operate on either natural
appliance and the section of this manual in which they are
CLEAR SPACE
SECTION 3.A.
DECORATIVE DOORS
SECTION 4
GLASS ASSEMBLY
SECTION 4
OPERATION DURING
A POWER OUTAGE
SECTION 3.I
WARNING! Risk of Fire! Comply with all minimum
instructions.
be disconnected from the gas supply piping system
during any pressure testing of that system at test pres-
sures in excess of 12
any pressure testing of the gas supply piping system at
test pressures equal to or less than 12
to inspect the room heater and to replace any part of
the control system and any gas control which has been
of the burner clean may result in sooting and property
insert or other accessory not approved for use with this
BUILDING CODE INFORMATION
Adhere to all local codes or, in their absence, the latest
American National Standards Institute, Inc.
1430 Broadway
or
National Fire Protection Association, Inc.
Batterymarch Park
10 Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
3 Framing and Clearances
Figure 3.1 - Appliance Dimensions
A. Appliance and Framing Dimensions/Weight
13-3/8 in
3 in 3-1/8 in
6-1/2 in
9-1/8 in
7-1/4 in
8 in
17 in
8-1/8 in
A
B
C
40-1/4 in
33 in
3-3/4 in
3-1/8 in
5-3/8 in
39-1/2 in
AVFL42 AVFL48 AVFL60
A 42 in 48 in
B
C
Model Weight
(Pounds)
195
220
250
Appliance Weight
11
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
Figure 3.2 - AVFLST48 Appliance Dimensions
Figure 3.3 - AVFLST48 With Outdoor Kit Appliance Dimensions
7-1/4 in
8 in
17 in
8-1/8 in
40-1/4 in
33 in
3-3/4 in
3-1/8 in
5-3/8 in
39-1/2 in
48 in
51-1/4 in
52-1/8 in
13 in
3-1/8 in 3-1/8 in
6-1/2 in
8-7/8 in
14-7/8 in
3-3/4 in
3-1/8 in
5-3/8 in
39-1/8 in
55-1/2 in
52-1/8 in
21-1/8 in
6-1/8 in
6 in
5-7/8 in
33-1/4 in
3-1/8 in
6 in
8-3/8 in
39-1/2 in
Model Weight
(Pounds)
205
Appliance Weight
12 Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
Figure 3.4 - Framing Dimensions
C
1/2”
1/2”
C
D
13-1/8”
39-3/4”
Framing
A
B
13-3/4” if nishing
with Option 2 on
page 37
AVFL42 AVFL48 AVFL60
A 42 in 48 in
B
C
D
If nishing with Option 2 on
Page 37, move nailing anges
so they attach as shown. Attach
to the appliance using the top
screw hole in the ange.
13
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
39-3/4”
Framing
48”
52-5/8”
52-5/8”
1/2”
1/2” 55-7/8”
13-1/2”
1/2”
52-5/8”
11-5/8” 12-7/8” if nishing with
Option 2 on page 37
Figure 3.5 - AVFL48ST Framing Dimensions
Exterior Wall Installation
Interior Wall Installation
Attach to the appliance using the top screw
14 Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
B. Clearances and Height Requirements
-
Sidewall and Mantel Clearances
the inside of the appliance to any combustible adjacent
Ceiling Clearance
Back Wall Clearance
The dimensions shown in Figures 3.6, 3.7, 3.8
and 3.9 are minimum clearances to maintain
when installing this appliance. Left and right
clearances are determined when facing the front
of the heater.
Follow these instructions carefully to ensure
safe installation. Failure to follow instructions
Floor Clearance
with appropriate framing for support so that no cold air can
Mantel clearances -
Figure 3.6 - Combustible Mantel Clearances
(AVFL42N(P)IP-BU, AVFL48N(P)IP, AVFL60N(P)IP-B, AND
AVFLST48N(P)IP appliances)
Figure 3.7 - Combustible Mantel Clearances
(AVFL42N(P)IP-RB)
Ceiling
Wall
Stud
Non-Combustible
Board
Stando
36
Top of Appliance
Opening
22
8
20
3
17-1/2
19
6
SIDE VIEW
Sidewall
Appliance
Opening
TOP VIEW
WARNING
Ceiling
Wall
Stud
Non-Combustible
Board
Stando
36
Top of Appliance
Opening
18
14
15-1/2
8
SIDE VIEW
TOP VIEW Sidewall
Appliance
Opening
15
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
SIDE VIEW
TOP VIEW
Ceiling
Wall
Stud
Non-Combustible
Board
Stando
36
Top of Appliance
Opening
20
8
19
3
17-1/2
19
6
Figure 3.8 - Non-Combustible Mantel Clearances
(AVFL42N(P)IP-BU, AVFL48N(P)IP, AVFL60N(P)IP-B, AND
AVFLST48N(P)IP appliances)
Figure 3.9 - Non-Combustible Mantel Clearances
(AVFL42N(P)IP-RB)
SIDE VIEW
TOP VIEW
Ceiling
Wall
Stud
Insulation
Board
36
Top of Appliance
Opening
16
13-1/2
8
12
12
6
7"
Appliance
Opening
7
7
Sidewall
7"
Appliance
Opening
7
7
Sidewall
Note: Reducing clearances further requires non-com-
bustible construction materials (eg: steel studs, du-
rock, etc) to a height of 12 inches above the framing
height.
Note: Reducing clearances further requires non-com-
bustible construction materials (eg: steel studs, du-
rock, etc) to a height of 12 inches above the framing
height.
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
Figure 3.10 - Good Faith TV Guidelines
C. Good Faith Wall Surface TV Guidelines
(AVFL42N(P)IP-BU, AVFL48N(P)IP, AVFL60N(P)IP-B, AND AVFLST48N(P)IP appliances)
Combus ble Mantel A
inch 22.00
Non-Combus ble Mantel
inch 20.00
Good Faith Guidelines for TV on’s above a Typical Gas Fireplace
TV on the wall TV recessed into the wall
Notes:
1. These are good faith recommended clearances only and not a guarantee of compliance with all TV
manufacturers’ maximum allowable operating temperatures.
2. Since every home has unique air ow characteristics and maximum allowable operating temperatures can
vary from manufacturer to manufacturer and from model to model, actual TV temperatures should be
validated at the time of each installation. TVs should not be used in situations where the actual TV
temperature exceeds the manufacturers’ maximum allowable operating temperatures identied in the
TV’s technical specications. Contact the TV’s manufacturer directly if you cannot locate this information
or have questions regarding the information.
3. Mantel height and depth must conform to mantel requirements specied in the installation manual.
4. “A” dimension taken from the top of the appliance opening.
5. Suggestions on how to further reduce TV temperatures:
-Increase “A” and/or 28” minimum TV height dimensions.
6" Min.
A Min.
28" Min.
12" Min.
TV
28" Min.
A Min.
12" Min.
TV
Top of appliance
opening
Top of appliance
opening
17
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
Good Faith Wall Surface TV Guidelines (continued)
(AVFL42N(P)IP-RB)
Combus ble Mantel A
inch 14.00
Non-Combus ble Mantel
inch 14.00
Good Faith Guidelines for TV on’s above a Typical Gas Fireplace
TV on the wall TV recessed into the wall
Notes:
1. These are good faith recommended clearances only and not a guarantee of compliance with all TV
manufacturers’ maximum allowable operating temperatures.
2. Since every home has unique air ow characteristics and maximum allowable operating temperatures can
vary from manufacturer to manufacturer and from model to model, actual TV temperatures should be
validated at the time of each installation. TVs should not be used in situations where the actual TV
temperature exceeds the manufacturers’ maximum allowable operating temperatures identied in the
TV’s technical specications. Contact the TV’s manufacturer directly if you cannot locate this information
or have questions regarding the information.
3. Mantel height and depth must conform to mantel requirements specied in the installation manual.
4. “A” dimension taken from the top of the rebox opening.
5. Suggestions on how to further reduce TV temperatures:
-Increase “A” and/or 18” minimum TV height dimensions.
6" Min.
A Min.
" Min.
" Min.
TV
8" Min.
A Min.
" Min.
TV
Top of appliance
opening
Top of appliance
opening
Figure 3.11 - Good Faith TV Guidelines
18 Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
E. Floor Protection
NOTICE: Install appliance on hard metal or wood surfaces
extending full width and depth. DO NOT install directly
on carpeting, vinyl, tile or any combustible material other
than wood.
WARNING! Risk of Fire!
clearances to appliance and vent pipe:
• Insulation and other materials must be secured to prevent
• The chase must be properly blocked to prevent blown
insulation or other combustibles from entering and
Figure 3.12 - Floor Protection
D. Constructing the Appliance Chase
A chase is a vertical box-like structure built to enclose the
NOTICE: Construction of the chase may vary with the type
of building. These instructions are not substitutes for the
requirements of local building codes. Therefore, you MUST
check local building codes to determine the requirements
to these steps.
Chases should be constructed in the manner of all out-
side walls of the home to prevent cold air drafting prob-
should be installed in the chase as per regional codes for
sheet rocked and taped (or an equivalent method may be
-
stops should be sealed with caulk with a minimum of
holes and other openings should be sealed with caulk
installed on a cement surface, a layer of plywood may be
placed underneath to prevent conducting cold up into the
Note:
Vinyl Flooring
depth hearth extension is recommended when using vinyl
guidelines could result in damage or buckling to the vinyl
-
-
Figure 3.13 - Vinyl Flooring Exception
Vinyl Flooring
Appliance width min.
14 in. min.
19
Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
4 Appliance Preparation
A. Securing and Leveling the Appliance
WARNING! Risk of Fire! Prevent contact with:
• Sagging or loose insulation
• Insulation backing or plastic
• Framing and other combustible materials
Block openings into the chase to prevent entry of blown-
in insulation. Make sure insulation and other materials
are secured.
DO NOT notch the framing around the appliance
To properly position, level, and secure the appliance, see
• Secure the appliance to the framing by using nails or
Figure 4.2 - Securing Appliance to Framing
Nailing Flange
Non-Combustible
Board
Framing Members
7-1/4 in.
Nailing Flange
Nailing Flange
Screws
Screws
Figure 4.1 - Non-Combustible Board Installation
51-1/4”
7-1/4”
51 1/4”
Standos
39-3/8”
by framing materials and the ceiling clearances are
20 Monessen • AVFL Series Installation Manual • 4099-901 Rev. E • 01/22
Setting the Appliance into the Framing
The left and right nailing tabs were designed as a means
-
Figure 4.3 - Nailing Tabs
Figure 4.4 - Install Non-Combustible Facing Material
B. Installing Non-Combustible Facing Material
WARNING! Risk of Fire!
• Follow these instructions exactly.
• Facing materials must be installed properly to prevent
• No materials may be substituted without authorization
by Hearth & Home Technologies.
• Attach non-combustible facing material to the framing
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