Monessen Hearth AVFL60NIP User manual

1
Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
Models:
AVFL60NIP
AVFL60PIP
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
plumber or gas tter.
See Table of Contents for location of
additional Commonwealth of Massachusetts
requirements.
• DO NOT store or use gasoline or other am-
mable vapors and liquids in the vicinity of this
or any other appliance.
• What to do if you smell gas
- DO NOT try to light any appliance.
- DO NOT touch any electrical switch. DO
NOT use any phone in your building.
- Leave the building immediately.
- Immediately call your gas supplier from
a neighbor’s phone. Follow the gas sup-
plier’s instructions.
- If you cannot reach your gas supplier, call
the re department.
• Installation and service must be performed
by a qualied installer, service agency, or the
gas supplier.
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly
could result in serious injury, death, or
property damage.
ARTISAN
SERIES
This is an unvented gas-red heater. It uses air
(oxygen) from the room in which it is installed.
Provisions for adequate combustion and ventil-
ation air must be provided. Refer to Page 6.
DO NOT install this unit in a bedroom or
bathroom. Please refer to page 6 Section F for
proper unit placement.

2Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
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 Checklist ....................3
1 Product Specic and Important Safety Information
A. Appliance Certication ............................4
B. BTU Specications ............................... 4
C. High Altitude Installations ..........................4
D. Non-Combustible Materials Specication. . . . . . . . . . . . . . 4
E. Combustible Materials Specication .................4
F. Electrical Codes ................................. 4
2 Getting Started
A. Design and Installation Considerations ...............5
B. Tools and Supplies Needed ........................5
C. Inspect Appliance and Components ..................5
D. Getting Started ..................................6
E. Planning the Installation ...........................6
F. Adequate Combustion Ventilation Air .................6
3 Framing and Clearances
A. Fireplace & Framing Dimension Diagrams. . . . . . . . . . . . . 8
B. Clearances and Height Requirements ................9
C. Good Faith Wall Surface TV Guidelines ..............10
D. Constructing the Appliance Chase .................. 11
E. Floor Protection ................................ 11
4 Appliance Preparation
A. Securing and Leveling the Appliance ................12
B. Installing Non-Combustible Facing Material .......... 13
5 Gas Information
A. Fuel Type .....................................14
B. Gas Pressure ..................................14
C. Gas Service Access .............................14
D. Connect to Gas ................................16
E. Valve Access ..................................17
F. Check Gas Pressure ............................17
G. Gas Connection ................................18
6 Electrical Information
A. General Information .............................19
B. Wiring Requirements ............................20
7 Final Installation
A. Dome Light Bulb Installation ......................22
B. Black Magic Glass Installation ..................... 22
C. Installation of Air Deection Glass ..................23
D. Fireglass Only Placement ........................ 23
E. Glass and Optional Stone Kit Placement .............23
F. Placement of Optional Logs .......................24
G. Lighting Instructions (IPI) ......................... 26
8 Finishing
A. Facing and Finishing Instructions ................... 27
B. Operation During a Power Outage .................. 29
C. Detailed Component Operating Instructions.—Intellire Plus
ODS .........................................30
D. Troubleshooting ................................ 31
E. Accessories ...................................33

3
Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
Installation Standard Work Checklist
Appliance Install Sections 2 and 4 (Pg. 5 & 12)
Verified that the chase is insulated and sealed.
Required non-combustible board is installed.
Gas Section 5 (Pg 14)
Proper appliance for fuel type.
Leak check performed and inlet pressure verified.
Verified proper air shutter setting for installation type.
Customer:
Lot/Address:
Model (circle one): AVFL60NIP, AVFL60PIP
Date Installed:
Location of Fireplace:
Installer:
Dealer/Distributor Phone #
Serial #:
Comments: Further description of the issues, who is responsible (Installer/ Builder/ Other Trades, etc) and corrective
action needed _____________________________________________________________________________________
Comments Communicated to party responsible ____________________ by ______________________on ___________
(Builder / Gen. Contractor/) (Installer) (Date)
?YHW , ON F I SEY
___________________________
___________________________
___________________________
___________________________
___________________________
Verifi ed clearances to combustibles.
Fireplace is level ed and secured.
Adequate provisions for combustion and ventilation air have been verified.
___________________________
___________________________
___________________________
___________________________
___________________________
Finishing Section 8 (Pg 27)
Combustible materials not installed in non-combustible areas.
Verifi ed all clearances meet installation manual requirements.
Finishing done correctly using inside fit or overlap fit method.
Bottom finishing template and finishing guards removed.
Mantels and wall projections comply with installation manual requirements.
___________________________
___________________________
___________________________
___________________________
___________________________
___________________________
___________________________
___________________________
___________________________
Manual bag and all of its contents are removed from inside/under
___________________________
___________________________
the appliance and given to party responsible for use and operation.
Started appliance and veried no gas leaks exist.
Lights work in all switched positions (if so equipped). ___________________________
4605-902A 05/17
 = Contains updated information.
Hearth & Home Technologies recommends the following:
• Photographing the installation and copying this checklist for your file.
• That this checklist remain visible at all times on the appliance until the installation is complete.
This standard work checklist is to be used by the installer in conjunction with, not instead of, the instructions contained in this
installation manual.
WARNING! Risk of Fire or Explosion! Failure to install appliance according to these instructions could
lead to a fire or explosion.
ATTENTION INSTALLER:
Follow this Standard Work Checklist
Glass & Stone Section 7 (Pg 22-25)
All packaging and protective materials removed (inside & outside of appliance).
Media installed correctly.
Glass assembly installed and secured.
Accessories installed properly.
Electrical Section 6 (Pg 19)
Unswitched power (110-120 VAC) provided to the appliance.
Switch wires properly installed.

4Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
This product is listed to ANSI standards for "Unvented
Room Heaters” and applicable sections of "Gas Burning
Heating Appliances for Manufactured Homes" and "Gas
Fired Appliances for Use at High Altitude."
A. Appliance Certication
D. Non-Combustible Materials Specication
Material which will not ignite and burn. Such materials are
those consisting entirely of steel, iron, brick, tile, concrete,
slate, glass or plasters, or any combination thereof.
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.
E. Combustible Materials Specication
Materials made of or surfaced with wood, compressed pa-
per, plant bers, plastics, or other material that can ignite
and burn, whether ame proofed or not, or plastered or
unplastered shall be considered combustible materials.
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.
• A 110-120 VAC circuit for this product must be pro-
tected with ground-fault circuit-interrupter protection,
in compliance with the applicable electrical codes,
when it is installed in locations such as in bathrooms
or near sinks.
NOT INTENDED FOR USE AS A PRIMARY HEAT SOURCE.
This appliance is tested and approved as either supplemen-
tal room heat or as a decorative appliance. It should not be
factored as primary heat in residential heating calculations.
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 Product Specic and Important Safety Information
B. BTU Specications
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 4500 feet elevation: Reduce input
rate 4% for each 1000 feet above 4500 feet.
Check with your local gas utility to determine proper
orice size.
MODEL: AVFL60NIP, AVFL60PIP
LABORATORY: CSA
TYPE: Unvented Room Heaters
STANDARD: ANSI Z21.11.2.2013
Models Maximum
Input BTU/h
Minimum
Input
BTU/h
Orice
Size
(DMS)
AVFL60NIP (0-4500 FT) 38,000 25,000 #44
AVFL60PIP (0-4500 FT) 37,000 29,000 #54
GAS PRESSURES
NOTE: For LP models an external regulator is required
to reduce supply pressure to a maximum of 13" w.c.
NATURAL PROPANE (LP)
Inlet Minimum 5.0" w.c. 11.0" w.c.
Inlet Maximum 10.5" w.c. 13.0" w.c.
Regulator Pressure
Setting
3.5" w.c. 10" w.c.
Pilot Regulator 3.5" w.c. —

5
Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
2 Getting Started
A. Design and Installation Considerations
Installation MUST comply with local, regional, state and
national codes and regulations. Consult insurance carrier,
local building inspector, re ofcials or authorities having
jurisdiction over restrictions, installation inspection and
permits.
Before installing, determine the following:
• Where the appliance is to be installed.
• Gas supply piping.
• Electrical wiring requirements.
• Framing and nishing details.
• Whether optional accessories—devices such as a wall
switch or remote control—are desired.
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualied
service technician, service agency or your dealer.
Installation and service of this appliance should
be performed by qualied personnel. Hearth
& Home Technologies recommends HHT
Factory Trained or NFI certied professionals.
C. Inspect Appliance and Components
• Carefully remove the appliance and components from
the packaging.
• NOTE: Remove rear packaging brackets (2) before
installing unit. See Figure 2.1.
• The accessories and fronts may be shipped in separate
packages.
• Media may be packaged separately.
• Report to your dealer any parts damaged in shipment,
particularly the condition of the glass.
•Read all of the instructions before starting the instal-
lation. Follow these instructions carefully during the
installation to ensure maximum safety and benet.
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
tools and building supplies are available.
• Tape measure
• Pliers
• Hammer
• Gloves
• Voltmeter
• Level
• Manometer
• Framing material
• Phillips screwdriver
• Framing square
• Plumb line
• Safety glasses
• Reciprocating saw
• Flat blade screwdriver
• 1/2 - 3/4 in. length, #6 or #8 Self-drilling screws
• Non-corrosive leak check solution
• Electric drill and bits (1/4 in. magnetic)
• External regulator (for propane/LPG only)
• Piping which complies with local codes
• Pipe sealant approved for use with propane/LPG
(Resistant to sulfur compounds)
Hearth & Home Technologies disclaims any responsibility
for, and the warranty will be voided by, the following actions:
• Installation and use of any damaged appliance.
• Modication of the appliance.
• Installation other than as instructed by Hearth & Home
Technologies.
• Installation and/or use of any component part not approved
by Hearth & Home Technologies.
Any such action may cause a re hazard.
WARNING! Risk of Fire, Explosion or Electric Shock!
DO NOT use this appliance if any part has been under
water. Call a qualied service technician to inspect the
appliance and to replace any part of the control system
and/or gas control which has been under water.
• Manual shutoff valve
• Sediment trap
• Tee joint
• Pipe wrench
Rear View
Remove brackets before
installation and replace
screws
Figure 2.1 Bracket Removal

6Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
D. Getting Started
Verify that all listed parts have been received. You should
have the following:
• Unvented gas heater
• Two (2) anchoring screws
• Installation and Owner’s instructions
• 6" non-combustible board
• Deector glass
• Five (5) bags reglass
• Two (2) 90 watt bulbs
• RC300 remote control
Carefully inspect the contents for shipping damage. If any
parts are missing or damaged, immediately inform the
dealer from whom you purchased the appliance. Do not
attempt to install any part of the appliance unless you
have all parts in good condition.
F. Adequate Combustion Ventilation Air
This heater shall not be installed in a conned space or
unusually tight construction unless provisions are provided
for adequate combustion and ventilation air.
The National Fuel Gas Code, (ANSI Z223.1/NFPA54),
denes a conned space as a space whose volume is less
than 50 cubic feet per 1,000 BTU per hour (4.8m3per kw)
of the aggregate input rating of all appliances installed in
that space, and an unconned space as a space whose
volume is not less than 50 cubic feet per 1,000 BTU per
hour (4.8 m3per kw) of the aggregate input rating of all
appliances installed in that space. Rooms communicating
directly with the space in which the appliances are installed,
through openings not furnished with doors, are considered
a part of a conned space.
Unusually tight construction is dened as construction
where:
a. Walls and ceilings exposed to the outside atmosphere
have a continuous water vapor retarder with a rating of
1 perm (6 x 1011 kg per pa/sec-m2) or less with openings
gasketed or sealed, and
b. Weather stripping has been added to windows and
doors, and
c. Caulking or sealants are applied to areas such as joints
around window and door frames, between sole plates
and oors, between wall-ceiling joints, between wall
panels, at penetrations for plumbing, electrical and gas
lines and other openings.
The following formula can be used to determine the maxi-
mum heater rating per the denition of unconned space:
BTU/Hr = (L1+ L2) Ft x (W) Ft x (H) Ft
50
Consider two connecting rooms with an open area
between, with the following dimensions:
L1 = 151/2 Ft., L2 = 12 Ft., W = 12 Ft., H = 8 Ft.
BTU/Hr = (151/2 + 12) x (12) x (8)
50
If there were a door between the two rooms the calculation
would be based only on the room with the heater.
BTU/Hr = (151/2) x (12) x (8)
50
Do not install the heater:
•Where curtains, furniture, clothing, or
other ammable objects are less than
36" from the front of the heater.
• In high trafc areas.
•In windy or drafty areas.
E. Planning the Installation
When planning the installation of the replace it is neces-
sary to determine where the unit is to be installed and
whether optional accessories are desired. Gas supply
piping should also be planned. The following steps repre-
sent the normal sequence of installation. Each installation
is unique, however, and might require a different sequence.
1. Position replace in desired location. Refer to the Fire-
place Location (page 8, Figure 3.2) and Clearances
and Height Requirements (page 9, Figures 3.4 and 3.5)
sections and Fireplace and Framing Dimensions (page
8, Figure 3.2) illustration found in this manual.
NOTE: Be sure all packing material has been removed
from under and behind the unit.
2. Install following the instructions found in this manual.
3. Field wire main power supply to junction box. Refer to the
Electrical Installation section (page 19). (Electrical con-
nections should only be performed by an experienced,
licensed certied service person).
4. Plumb gas line. Gas line may be run either through
bottom of unit or left side. There is no right side access.
Refer to the Connect the Gas (page 16, Figure 5.4)
section found in this manual. (Gas connections should
only be performed by an experienced, licensed/certied
service person).
5. Complete nish wall material and/or surround.
WARNING
WARNING
Gloves are recommended when handling
ceramic ber logs to prevent skin irritation
from loose bers. Logs are fragile—handle
with care.

7
Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
W
H
Counter
Fireplace
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 2.12
FIREPLACE LOCATION
This unvented gas heater requires no outside venting and
burns cleanly and efciency. As a zero-clearance unvented
gas heater, it can be installed against (or recessed into)
any wall that is accessible to a gas line.
Carefully select the best location for installation of your
unvented replace. The following factors should be taken
into consideration.
•Clearance to side wall, ceiling, woodwork and window
or other combustibles. Refer to Clearance and Height
Requirements section on Page 9. Minimum clearances
to combustibles must be maintained.
• Location must not be affected by drafts caused by
kitchen exhaust fans, ceiling fans, return air registers
for forced air furnaces / air conditioners, windows or
doors.
• Installation must provide adequate ventilation and
combustion air.
• DO NOT INSTALL THIS MODEL IN A BEDROOM
OR BATHROOM.
• Location should be out of high trafc areas and
away from furniture and draperies due to heat from
rebox.
FP3029
replace locations
Figure 2.3
• Never obstruct the front opening of the unvented re-
place or restrict the ow of combustion and ventilation
air.
• Minimize modications to existing construction. Refer
to Figure 2.2 below for location suggestions.
• Do not install in the vicinity where gasoline or other
ammable liquids may be stored. The unvented re-
box must be kept clear and free from the combustible
materials.
NOTICE: Illustrations reect typical installations and are
FOR DESIGN PURPOSES ONLY. Illustrations/diagrams
are not drawn to scale. Actual installation could vary due
to individual design preference.
It is important to follow the framing and nishing instruc-
tions step by step to ensure proper placement of replace
in the surrounding framing/nishing materials.
WARNING

8Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
3 Framing and Clearances
Figure 3.1 Fireplace and Framing Dimensions
A. Fireplace and Framing Dimensions
Figure 3.2 - Optional Facing Installation
"
NON COMBUSTIBLE BOARD
SUPPLIED
16-1/8” 18”
55-7/8”
67-3/16”
67-3/16”
95”
11” 1-7/8”
36-3/8”
51”
55-3/8”
16”
6”
6-7/8”
29-3/4”
2-3/8” 7”
Corner Framing
Gas
Rough
Opening
Height
Rough Opening Width
Rough
Opening
Depth
Actual
Actual
Actual
Electrical
View
NON-COMBUSTIBLE
NON-COMBUSTIBLE
6”
ONLY NON-COMBUSTIBLE
MATERIAL ON FACE OF UNIT.
ONLY
NON-COMBUSTIBLE
MATERIAL ON FACE
OF UNIT.
ONLY NON-COMBUSTIBLE
MATERIAL ON FACE OF UNIT.
ONLY
NON-COMBUSTIBLE
MATERIAL ON FACE
OF UNIT.

9
Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
B. Clearances and Height Requirements
Ensure that minimum clearances shown in Figures 3.4
and 3.5 are maintained. Left and right clearances are
determined when facing the front of the rebox.
Follow these instructions carefully to ensure safe instal-
lation. Failure to follow these requirements may create a
re hazard.
Sidewall Clearances — The clearance from the inside of
the appliance to any combustible adjacent wall should not
be less than 6". Figure 3.4.
Ceiling Clearance — The ceiling or any other combustible
material must be at least 36" from the rebox opening.
Figure 3.4
Back Wall Clearance — The appliance may be placed
against a combustible back wall.
The dimensions shown in Figures 3.4 and
3.5 are minimum clearances to maintain
when installing this heater. 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 exactly can create a re hazard.
Floor Clearance — The replace may be installed directly
on a combustible oor or a raised platform of an appropri-
ate height. Do not place replace on carpeting, vinyl, tile or
other soft oor coverings. It may, however, be placed on at
wood, plywood, particle board or other hard surfaces. Be
sure replace rests on a solid continuous oor or platform
with appropriate framing for support so that no cold air can
enter from under the rebox.
Mantel clearances — Must meet the clearance require-
ments detailed in Figures 3.4 and 3.5.
Figure 3.4 Sidewall and Ceiling Clearances
Figure 3.5 – Mantel Clearances
28"
6"
18"
12"
23"
Wall
Stud
Insulation
Board
Stando
Top of Fireplace
Opening
2-1/2"
SIDE VIEW
6"
5"
3"4¹⁄₂"45°
1"
3¹⁄₂"
1¹⁄₂"
2¹⁄₂"
Fireplace
Opening
TOP VIEW
36"Minimum
From Opening
12"Max.
Depth
21/2"Max
Depth
18"Min.
From Opening
28"Min.
From Opening
6"Min.
Rear View
Remove brackets before
installation and replace
screws
Figure 3.3 Bracket Removal
WARNING
See Good Faith Guidelines for TV Installations on
page 10, Figure 3.6.

10 Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
Figure 3.6 Good Faith TV Guidelines
C. Good Faith Wall Surface TV Guidelines
Good Faith Guidelines for TV Installaons above a Typical Gas Fireplace
Notes:
1. TV installation as shown requires the mantel be constructed entirely of noncombustible material
as it is below the allowable height for a combustible mantel.
2. These are good faith recommended clearances only and not a guarantee of compliance with all TV
manufacturers’maximum allowable operating temperatures.
3. 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 identied in the
TV’s technical specications. Contact the TV’s manufacturer directly if you cannot locate this information
or have questions regarding the information.
TV on the wall TV recessed into the wall
TV
TV
6” Min.
4” Min.
12”
Min.
28”
4” Min.
28”
12”
Min.
Measured from top
of rebox opening.
Noncombustible
Mantel (required)

11
Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
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! Maintain specied air space
clearances to appliance and vent pipe:
• Insulation and other materials must be secured to prevent
accidental contact.
• The chase must be properly blocked to prevent blown
insulation or other combustibles from entering and
making contact with replace or chimney.
• Failure to maintain airspace could cause overheating
and re.
Figure 3.7 Floor Protection
D. Constructing the Appliance Chase
A chase is a vertical box-like structure built to enclose the
gas appliance.
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-
lems. The chase should not break the outside building
envelope in any manner.
Walls, ceiling, base plate and cantilever oor of the chase
should be insulated. Vapor and air inltration barriers
should be installed in the chase as per regional codes for
the rest of the home. Additionally, in regions where cold
air inltration may be an issue, the inside surfaces may be
sheet rocked and taped (or an equivalent method may be
used) to achieve maximum air tightness.
To further prevent drafts, the wall shield and ceiling re-
stops should be caulked with caulk with a minimum of
300ºF continuous exposure rating to seal gaps. Gas line
holes and other openings should be caulked with caulk
with a minimum of 300ºF continuous exposure rating or
stuffed with unfaced insulation. If the appliance is being
installed on a cement surface, a layer of plywood may be
placed underneath to prevent conducting cold up into the
room.
Note: Figure 3.4 and Figure 3.5, and Figure 3.7 show the
replace installed on the oor. However, this replace can
be elevated off the oor provided that the replace is properly
supported by framing materials and the ceiling clearances are
maintained.

12 Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
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
standoffs. Failure to maintain air space clearance could
cause overheating and re.
To properly position, level, and secure the appliance, see
below. Nailing tabs are provided to secure the appliance
to the framing members.
• Bend out the two nailing tabs on each side.
• Place the appliance into position.
• Keep nailing tabs ush with the framing. See Figure 4.2.
• Level the appliance from side to side and front to back.
• Shim the appliance as necessary. It is acceptable to use
wood shims underneath the appliance.
• Secure the appliance to the framing by using nails or
screws through the nailing tabs.
Some gures in manual show the replace installed on the
oor. However, this replace can be elevated off the oor
provided that the replace is properly supported by framing
materials and the ceiling clearances are maintained.
Figure 4.2 Securing Fireplace to Framing
Combustible
Material
Framing Members
6 in.
Nailing Flange
Nailing Flange
Nailing Flange
Screws
Screws
Figure 4.1 Noncombustible Facing Installation
6"
MOUNTING
POINTS
55-3/8"
Standoffs
35-3/4"
Framing
55-7/8"

13
Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
Setting the Fireplace into the Framing
The left and right nailing tabs were designed as a means
to ensure the replace is mounted ush with the framing
materials. See Figures 4.2 and 4.3.
1. Bend out all nailing tabs. The AVFL60 has four nailing
tabs, two on each side in the middle of the unit.
2. Screw each nailing tab to the adjoining framing ma-
terial. See Figures 3.1-3.7 for framing and clearance
details.
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
re.
• No materials may be substituted without authorization
by Hearth & Home Technologies.
• Non-Combustible facing material needs to be at least 6”
high and the full width of the unit.
• Attach non-combustible facing material to the framing
members with regular sheetrock screws.
• Use a wet or dry towel or soft brush to remove dust or
dirt from facing material.
• See Section 8 for nishing materials guidelines.

14 Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
A. Fuel Type
• This appliance is equipped for either natural or propane
gas. Field conversion is not permitted.
• Make sure the appliance is compatible with available gas
types.
B. Gas Pressure
• Optimum appliance performance requires proper input
pressures.
• Gas line sizing requirements will be determined in ANSI
Z223.1 National Fuel Gas Code in the USA.
• Pressure requirements are:
5 Gas Information
Note: Have the gas supply line installed in accordance with
local codes, if any. If not, follow ANSI 223.1. Installation
should be done by a qualied installer approved and/or
licensed as required by the locality. (In the Commonwealth
of Massachusetts installation must be performed by a
licensed plumber or gas tter).
Note: A listed (and Commonwealth of Massachusetts ap-
proved) 1/2 in. (13 mm) T-handle manual shut-off valve
and exible gas connector are connected to the 1/2 in. (13
mm) control valve inlet.
• If substituting for these components, please consult
local codes for compliance.
Fire Risk.
Explosion Hazard.
High pressure will damage valve.
• Disconnect gas supply piping BEFORE
pressure testing gas line at test pressures
above 1/2 psig.
• Close the manual shutoff valve BEFORE
pressure testing gas line at test pressures
equal to or less than 1/2 psig.
WARNING
WARNING! Risk of Fire or Explosion! High pressure
will damage valve. Low pressure could cause explosion.
• Verify inlet pressures. Verify minimum pressures when
other household gas appliances are operating.
• Install regulator upstream of valve if line pressure is
greater than 1/2 psig.
• Valve pressure taps are accessible by removing the
control door. See Figures 5.1 & 5.2.
Figure 5.1. Valve Pressure Tap
NOTE: This appliance does include a manual gas shutoff
valve that is located in the valve compartment. This manual
gas shutoff valve is accessible for service by removing the
control door. See Figure 5.2. The valve is most accessible
if it is located forward in the control cavity of the appliance.
Depending upon local code, an additional manual gas
shutoff, in a readily accessible area may be required and
located upstream from the appliance.
C. Gas Service Access
NATURAL PROPANE (LP)
Inlet Minimum 5.0" w.c. 11.0" w.c.
Inlet Maximum 10.5" w.c. 13.0" w.c.
Regulator Pressure
Setting
3.5" w.c. 10" w.c.
Pilot Regulator 3.5" w.c. —
TEST PORT "A"

15
Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
Led
Buttons
Valve
Control
Module
ODS
Module ODS
Adapter
Battery
Backup
Aux
Figure 5.2 Valve Access

16 Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
D. Connect to Gas
NOTICE: A qualied gas appliance installer must connect
the heater to the gas supply. Consult all local codes.
Use new black iron or steel pipe. Internally
tinned copper or copper tubing can be used
per National Fuel Code, section 2.6.3, providing
gas meets hydrogen sulde limits, and where
permitted by local codes. Gas piping system
must be sized to provide minimum inlet
pressure (Listed on Data Plate) at the maximum
ow rate (BTU/hr). Undue pressure loss will
occur if the pipe is too small.
A manual shutoff valve must be installed
upstream of the appliance. Union tee and
plugged 1⁄8" NPT pressure tapping point should
be installed upstream of the appliance. Figure
5.3
A sediment trap should be installed upstream
to prevent moisture and contaminants from
passing through the pipe to appliance controls
and burners. Failure to do so could prevent the
appliance from operating reliable. Figure 5.3
IMPORTANT: Loosen the pipe adapter on the ex tube
before installing to the system piping.
Always use an external regulator for all propane/LPG heat-
ers only, to reduce the supply tank pressure to a maximum
of 13" w.c. This is in addition to the internal regulator in the
heater valve.
When tightening the joint to the valve, hold the valve
securely to prevent movement.
Test all gas joints from the gas meter to the heater valve for
leaks using a gas analyzer or soap and water solution after
completing connection. DO NOT USE AN OPEN FLAME.
CHECK GAS TYPE: The gas supply must be the
same as stated on the heater’s rating plate. If
the gas supply is different, DO NOT INSTALL
THE HEATER. Contact your dealer for the
correct model.
Connecting directly to an unregulated
propane/LP tank can cause an explosion.
DO NOT USE OPEN FLAME TO CHECK
FOR GAS LEAKS.
GAS LINE IN
GAS LINE IN
Figure 5.3 Gas Line In
When an appliance is connected to a xed piping sys-
tem, the 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 International Fuel Gas
Code.
THIS APPLIANCE IS EQUIPPED FOR
EITHER NATURAL OR PROPANE GAS.
FIELD CONVERSION IS NOT PERMITTED.
WARNING
WARNING
WARNING
WARNING

17
Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
E. Valve Access
The valve and controls are located in the appliance con-
trol box. See Figure 5.4.
The control box and controls can be accessed by lifting
engine assembly and shown in Figure 5.4.
• Make sure unit is off and cool.
• Remove media and deection glass panel from
hearth pan.
• Remove two (2) screws securing burner assembly to
appliance, set aside.
• Lift the burner assembly and place the two engine
supports, provided under the Engine, against lower
front space at the bottom of the face, and slide into
the slots at the bottom of the engine assembly. See
Figure 5.4.
• Locate valve on face of engine assembly.
• Gas line sizing requirements will be determined in
ANSI Z233.1 National Fuel Gas Code in the USA.
• Pressure requirements are:
These pressures can be veried by lifting engine and
removing control cover to reveal the valve.
When an appliance is connected to a xed piping sys-
tem, the 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 International Fuel Gas
Code.
Engine Support
Figure 5.4 Valve Access
F. Check Gas Pressure
Check the gas pressure with the appliance burning and
the control set to HIGH.
Open control access door at bottom front of unit to nd
valve and regulator referred to below.
The valve regulator controls the burner pressure which
should be checked at the pressure test point.
Turn captured screw counterclockwise two or three turns
and then place tubing to pressure gauge over test point.
Use test point “A” closest to gas inlet. After taking pres-
sure reading, be sure and turn captured screw clockwise
rmly to reseal. Do not over torque. Check for gas leaks.
See Figure 5.5.
TEST PORT 'A'
Figure 5.5 Pressure Test Point Location
Screen Access
Panel
Figure 5.6 Gas and Electrical Access - Remove Screen

18 Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
Figure 5.7 Gas Fitting Access
G. Gas Connection
• Refer to Figure 5.7 for location of gas ex line access in
appliance.
• Gas line may be run through the left side or right bottom
of the appliance. See Figure 5.3.
• The gap between supply piping and gas access hole
may be caulked with caulk with a minimum of 300ºF
continuous exposure rating or stuffed with non-
combustible, unfaced insulation to prevent cold air
inltration.
• Ensure that gas line does not come in contact with outer
wrap of the appliance. Follow local codes.
• Pipe incoming gas line into valve compartment.
• Connect incoming gas line to the 1/2 in. (13 mm)
connection on manual shutoff valve.
WARNING! Risk of Fire or Explosion! Support control
when attaching pipe to prevent bending gas line.
• A small amount of air will be in the gas supply lines.
WARNING! Risk of Fire or Explosion! Gas build-up dur-
ing line purge could ignite.
• Purge should be performed by qualified service
technician.
• Ensure adequate ventilation.
• Ensure there are no ignition sources such as sparks
or open ames.
H. 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 4500 feet elevation reduce input
4% for each 1000 feet above 4500 feet.
Check with your local gas utility to determine proper ori-
ce size.
Gas
Valve
Control
Module
Battery
Backup
Light the appliance. It will take a short time for air to purge
from lines. When purging is complete the appliance will
light and operate normally.
WARNING! Risk of Fire, Explosion or Asphyxiation!
Check all ttings and connections with a non-corrosive
commercially available leak-check solution. DO NOT use
open ame. Fittings and connections could have loos-
ened during shipping and handling.
WARNING! Risk of Fire! DO NOT change valve settings.
This valve has been preset at the factory.
18" Flex Line

19
Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
A. General Information
WARNING! Risk of Shock or Explosion! DO NOT wire
110-120 VAC to the valve or to the appliance wall switch.
Incorrect wiring will damage controls.
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.
• Wire the appliance junction box to unswitched 110-
120 VAC. This is required for proper operation of the
appliance.
• A 110-120 VAC circuit for this product must be protected
with ground-fault circuit-interrupter protection, in
compliance with the applicable electrical codes, when
it is installed in locations such as in bathrooms or near
sinks.
• Low voltage and 110/120 VAC voltage cannot be shared
within the same wall box.
6 Electrical Information
Electrical Service and Repair
WARNING! Risk of Shock! Label all wires prior to dis-
connection when servicing controls. Wiring errors can
cause improper and dangerous operation. Verify proper
operation after servicing.
WARNING! Risk of Shock! Replace damaged wire with
type 105º C rated wire. Wire must have high temperature
insulation.
Junction Box Installation
WARNING! Risk of Shock! Label all wires prior to dis-
connection when servicing controls. Wiring errors can
cause improper and dangerous operation. Verify proper
operation after servicing.
WARNING! Risk of Shock! Replace damaged wire with
type 105° C rated wire. Wire must have high temperature
insulation.
Accessories Requirements
• This appliance may be used with a wall switch, or optional
wall mounted thermostat and/or a remote control.
Wiring for optional Hearth & Home Technologies approved
accessories should be done now to avoid reconstruction.
Follow instructions that come with those accessories.
Figure 6.1 Cover Plate for Junction Box
Junction Box Wiring
1. This should be done before framing the replace. Wire
the receptacle into an electrical circuit.
2. The junction box cover has a Romex style strain relief
connector located in the Owner’s Manual. After con-
necting the wires, route the wire leads through this
connector. Refer to the wiring diagram in Figure 6.2.
Electrical connections should only be performed
by a qualied, licensed electrician. Main power
must be off when connecting to main electrical
power supply or performing service. All wiring
shall be in compliance with all local, city and
state codes. The appliance, when installed,
must be electrically grounded in accordance
with local codes or in the absence of local
codes, with the National Electrical Code ANSI/
NFPA 70 (latest edition) and Canadian Electrical
Code, CSA C22.1.
CAUTION
Label all wires before disconnecting when
servicing controls. Wiring errors can cause
improper and dangerous operation.
Do not connect wall switch to 110 V circuit.
Figure 6.2 - Junction Box Wiring Diagram
120V AC
60Hz
Factory Supplied
Not Supplied
Junction Box
WARNING
WARNING

20 Monessen • AVFL60 Installation Manual • 4605-901 Rev. A • 05/17
Figure 6.3 IntelliFire™ Plus ODS Wiring Diagram
B. Wiring Requirements
Intellire™Plus ODS Ignition System Wiring
NOTICE: Batteries should only be used as a power source
in the event of an emergency power outage. Batteries
should not be used as a primary long-term power source.
Battery polarity must be correct when installing batteries.
When using batteries as a power source, the 6-volt
transformer must be unplugged from the receptacle.
Do not store batteries in the battery pack when the
appliance is powered by the 6 volt transformer connected
to permanent electrical service.
• Wire the appliance junction box to 110-120 VAC for
proper operation of the appliance.
WARNING! Risk of Shock or Explosion! DO NOT wire
IFP ODS controlled appliance junction box to a switched
circuit. Incorrect wiring will override IFP ODS safety lock-
out.
• Refer to Figure 6.3 or 6.4, IFP ODS Wiring Diagram.
• This appliance is equipped with an Intellire™ Plus
control valve which operates on a 6 volt/1.5 AMP system.
• Plug the 6 volt transformer plug into the appliance junction
box to supply power to the unit OR install 4 AA cell
batteries (not included) into the battery pack before use.
Accessories Requirements
• This appliance ships standard with a remote control.
Wiring for optional Hearth & Home Technologies approved
accessories should be done now to avoid reconstruction.
Follow instructions that come with those accessories.
TO JUNCTION
BOX (120V)
I
S
RC300 4.5V DC
(AAA X 3)
TO JUNCTION
BOX 120VAC
TO OPTIONAL
COMPONENTS
GROUND
ORANGE
(PILOT)
GREEN
(MAIN)
BROWN
BLACK
RED
BROWN/RED
OPTIONAL ON/OFF
SWITCH
BATTERY PACK
6V DC
FLAME
MODULATION
AUX300 MODULE
AUX 1 AUX 2
FAN
WHITE
ORANGE
CONTROL MODULE
6V DC
SUPPLY
PILOT
THERMOCOUPLE MODULE
19026-GM931 Control Box ODS
19093-Thermalcouple Module Wire
K19084 8K-1 Adapter Box
K99085 GM8K-1
ODS Adapter Box
THERMOCOUPLE
THERMOCOUPLE
SENSOR
SENSOR