FMI UM36 Series User manual

For more information, visit www.fmiproducts.com
WARNING: If the information in this manual is not
followed exactly, a re or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other ammable
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.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’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.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
PFS
®
US
UNVENTED (VENT-FREE)
UNIVERSAL FIREBOX
OWNER’S OPERATION AND
INSTALLATION MANUAL
INDOOR VENT FREE (V)UM(36,42,50) SERIES
INDOOR/OUTDOOR VENT FREE (V)QM(36,42,50) SERIES
MASONRY FIREBOX WITH INSULATION

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TABLE OF CONTENTS
Safety .................................................................. 2
Local Codes......................................................... 4
Product Features................................................. 4
Locating Firebox.................................................. 4
Product Specications......................................... 5
Air For Combustion and Ventilation ..................... 8
Installation ......................................................... 10
Firebrick Wall Installation................................... 14
Gas Line Installation.......................................... 16
Technical Service............................................... 17
Replacement Parts............................................ 17
Parts .................................................................. 18
Warranty ..............................................Back Cover
WARNING: Improper installation, adjustment, al-
teration, service or maintenance can cause injury or
property damage. Refer to this manual for correct in-
stallation and operational procedures. For assistance
or additional information consult a qualied installer,
service agency or the gas supplier.
WARNING: Carefully review the instructions sup-
plied with the decorative type unvented room heater for
the minimum replace size requirement.
DO NOT INSTALL THE APPLIANCE IN THIS FIREBOX,
UNLESS THIS FIREBOX MEETS THE MINIMUM DIMEN-
SIONS REQUIRED FOR THE INSTALLATION.
WARNING: FOR USE ONLY WITH A LISTED, GAS-
FIRED UNVENTED DECORATIVE ROOM HEATER NOT
TO EXCEED 40,000 BTU/H.
DO NOT BUILD A WOOD FIRE.
SAFETY
This appliance may be installed
in an aftermarket,* permanently
located, manufactured (mobile)
home, where not prohibited by
local codes.
* Aftermarket: Completion of sale, not for
purpose of resale, from the manufacturer
This rebox has been tested
under Z21.91b-2004 for use
with approved ANSI Z21.11.2
decorative type unvented room
heater.
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, op-
erate or service this replace.
Improper use of this replace
can cause serious injury or
death from burns, re, explo-
sion, electrical shock and carbon
monoxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!

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122274-01G 3
WARNING: Any change to
this rebox or its controls can
be dangerous.
WARNING: Do not allow fans
to blow directly into the rebox.
Avoid any drafts that alter burner
ame patterns. Ceiling fans can
create drafts that alter burner
ame patterns. Altered burner
patterns can cause sooting.
WARNING: Do not use a blow-
er insert, heat exchanger insert
or other accessory not approved
for use with this rebox.
Due to high temperatures, the
appliance should be located out
of trafc and away from furniture
and draperies.
Do not place clothing or other
ammable material on or near
the appliance. Never place any
objects in the rebox or on
logs.
Firebox front and screen be-
comes very hot when running
rebox. Keep children and adults
away from hot surfaces to avoid
burns or clothing ignition. Fire-
box will remain hot for a time
after shutdown. Allow surfaces
to cool before touching.
Carefully supervise young chil-
dren when they are in the room
with rebox.
Keep the replace area clear and
free from combustible materials,
gasoline, and other ammable
vapors and liquids.
SAFETY
Continued
You must operate this replace
with the provided fireplace
screen and hood in place.
Make sure these parts are in
place and screens are closed
before running installed gas
log heater. Replace hood with
FMI PRODUCTS, LLC model
109511-01 50", 109511-02 42",
or 109511-03 36" only. This hood
has been designed to keep the
operation of your replace safe
and efcient.
1. Do not use this rebox as a wood burning
replace. Use only decorative unvented
room heaters (log sets).
2. Do not add extra logs or ornaments such as
pine cones, vermiculite or rock wool. Using
these added items can cause sooting.
3. Use only the provided hood. See Parts,
page 30.
4. Vent-free gas log heaters installed in these
reboxes require fresh air ventilation to
run properly. See Air for Combustion and
Ventilation, page 8.
5. Do not run vent-free heaters installed in
these reboxes
• where ammable liquids or vapors are
used or stored
• under dusty conditions
6. Do not use this rebox to cook food or
burn paper or other objects.
7. Turn unit off and let cool before servicing.
Only a qualied service person should
service and repair rebox.
8. Operating vent-free heaters installed in
these reboxes above elevations of 4,500
feet could cause pilot outage.
9. Do not use the rebox if it has been
under water.
10. Before using furniture polish, wax, carpet
cleaner or similar products, turn heater
off. If heated, the vapors from these prod-
ucts may create a white powder residue
within burner box or on adjacent walls
and furniture.
11. Provide adequate clearances around air
openings.

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State of Massachusetts: The installation
must be made by a licensed plumber
or gas fitter in the Commonwealth of
Massachusetts.
Sellers of unvented propane or natural
gas-fired supplemental room heaters
shall provide to each purchaser a copy of
527 CMR 30 upon sale of the unit.
Vent-free gas products are prohibited for
bedroom and bathroom installation in
the Commonwealth of Massachusetts.
PRODUCT FEATURES
OPERATION
This rebox is designed for use with approved
ANSI Z21.11.2 decorative type unvented room
heaters. (Physical size limitations apply. Refer
to minimum rebox requirements supplied
with log heater.) It requires no outside vent-
ing or chimney making installation easy and
inexpensive.
LOCAL CODES
LOCATING FIREBOX
PLANNING
Plan where you will install the rebox. This will
save time and money later when you install
the rebox. Before installation, consider the
following:
1. Where rebox will be located. Allow for
wall and ceiling clearances (see Installa-
tion Clearances, page 11).
2. Everything needed to complete installation.
3. These models CANNOT be installed in
a bedroom unless maximum Btu rating
of installed vent-free log set is less than
10,000 Btu/hr.
4. Proper air for combustion and ventilation
(page 8).
Install and use rebox with care. Follow all
local codes. In the absence of local codes,
use the latest edition of The National Fuel Gas
Code ANSI Z223.1/NFPA 54*. Firebox must
be electrically grounded in accordance with
the National Electrical Code, ANSI/NFPA70
(latest edition).
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269

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122274-01G 5
PRODUCT SPECIFICATIONS
36" MODELS
Figure 1 - 36" Models (V)UM36 and (V)QM36 Series
30 1/2"
29"
30"
11 1/8"
54 1/2"
7 7/8"7"
36"
45 1/8"
35/16"
97/16"
50"
365/16"
7 3/8"
111/8"
36" HEARTH
1 5/16"
19 13/16"
(Ref.)
34 3/4"
22"
18 3/8"
3 3/4"
4 7/8"

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PRODUCT SPECIFICATIONS
Continued
42" MODELS
Figure 2 - 42" Models (V)UM42 and (V)QM42 Series
4 7/8"
54 1/2"
7 7/8"7"
36 5/16"
50"
42"
51 1/8"
32 3/8"
3 3/4"
30 5/16"
8 3/4"
13"
3 5/16"
9 7/16"
30"
11 1 /8"
23 13/16"
(Ref.)
1 5/16"
40 3/4"
25"
22 1/2"
42" HEARTH

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122274-01G 7
PRODUCT SPECIFICATIONS
Continued
50" MODELS
Figure 3 - 50" Models (V)UM50 AND (V)QM50 Series
365/16"
50"
8 3/4"
13"
35/16"
97/16"
23 13/16"
(Ref.)
1 5/16"
33"
40 3/4"
22 1/2"
50" HEARTH
59 1/8"
50"
7 7/8"7"
30"
54 1/2"
11 1/8"
32 3/8"
3 3/4"
38 5/16"
4 7/8"

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AIR FOR COMBUSTION AND VENTILATION
Unusually tight construction is dened as
construction where:
a. walls and ceilings exposed to the out-
side atmosphere have a continuous
water vapor retarder with a rating of
one perm (6 x 10-11 kg per pa-sec-m2) or
less with openings gasketed or sealed
and
b. weather stripping has been added on
openable 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 at other openings.
If your home meets all of the three criteria
above, you must provide additional fresh
air. See Ventilation Air From Outdoors,
page 10.
If your home does not meet all of the three
criteria above, proceed to Determining
Fresh-Air Flow For Firebox Location.
Conned and Unconned Space
The National Fuel Gas Code, ANSI Z223.1/
NFPA 54 denes a conned space as a space
whose volume is less than 50 cubic feet per
1,000 Btu per hour (4.8 m3 per kw) of the ag-
gregate 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 m3 per 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 the un-
conned space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation
grills between them.
DETERMINING FRESH-AIR FLOW
FOR FIREBOX LOCATION
Determining if You Have a Conned or
Unconned Space
Use this work sheet to determine if you have
a conned or unconned space.
Space: Includes the room in which you will
install heater plus any adjoining rooms with
doorless passageways or ventilation grills
between the rooms.
WARNING: This heater shall
not be installed in a room or space
unless the required volume of in-
door combustion air is provided
by the method described in the
National Fuel Gas Code, ANSI
Z223.1/NFPA 54, the International
Fuel Gas Code, or applicable lo-
cal codes. Read the following in-
structions to insure proper fresh
air for this and other fuel-burning
appliances in your home.
Today’s homes are built more energy efcient
than ever. New materials, increased insulation
and new construction methods help reduce
heat loss in homes. Home owners weather
strip and caulk around windows and doors to
keep the cold air out and the warm air in. Dur-
ing heating months, home owners want their
homes as airtight as possible.
While it is good to make your home energy
efcient, your home ne eds to breathe. Fresh
air must enter your home. All fuel-burning ap-
pliances need fresh air for proper combustion
and ventilation.
Exhaust fans, replaces, clothes dryers and
fuel burning appliances draw air from the house
to operate. You must provide adequate fresh
air for these appliances. This will insure proper
venting of vented fuel-burning appliances.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Air for
Combustion and Ventilation.
All spaces in homes fall into one of the three
following ventilation classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned Space
The information on pages 8 through 10 will help
you classify your space and provide adequate
ventilation.
Unusually Tight Construction
The air that leaks around doors and windows
may provide enough fresh air for combustion
and ventilation. However, in buildings of un-
usually tight construction, you must provide
additional fresh air.

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122274-01G 9
AIR FOR COMBUSTION AND VENTILATION
Continued
1. Determine the volume of the space (length
x width x height).
Length x Width x Height =__________cu. ft.
(volume of space)
Example: Space size 22 ft. (length) x 18 ft.
(width) x 8 ft. (ceiling height) = 3,168 cu. ft.
(volume of space)
If additional ventilation to adjoining room
is supplied with grills or openings, add the
volume of these rooms to the total volume
of the space.
2. Multiply the space volume by 20 to determine
the maximum Btu/Hr the space can support.
________ (volume of space) x 20 = (Maxi-
mum Btu/Hr the space can support)
Example: 3,168 cu. ft. (volume of space) x 20 =
63,360 (maximum Btu/Hr space can support)
3. Add the Btu/Hr of all fuel burning appliances
in the space.
Vent-free replace _________ Btu/Hr
Gas water heater* _________ Btu/Hr
Gas furnace _________ Btu/Hr
Vented gas heater _________ Btu/Hr
Gas replace logs _________ Btu/Hr
Other gas appliances* + _________ Btu/Hr
Total = _________ Btu/Hr
* Do not include direct-vent gas appliances.
Direct-vent draws combustion air from the
outdoors and vents to the outdoors.
Example:
Gas water heater _________ Btu/Hr
Vent-free replace + _________ Btu/Hr
Total = _________ Btu/Hr
4. Compare the maximum Btu/Hr the space
can support with the actual amount of Btu/Hr
used.
_______ Btu/Hr (maximum the space can
support)
_______ Btu/Hr (actual amount of Btu/Hr
used)
Example: 63,360 Btu/Hr (maximum the
space can support)
79,000 Btu/Hr (actual amount of
Btu/Hr used)
The space in the example is a conned space
because the actual Btu/Hr used is more than the
maximum Btu/Hr the space can support. You
must provide additional fresh air. Your options
are as follows:
A. Rework worksheet, adding the space of an
adjoining room. If the extra space provides an
unconned space, remove door to adjoining
room or add ventilation grills between rooms.
See Ventilation Air From Inside Building.
B. Vent room directly to the outdoors. See
Ventilation Air From Outdoors, page 10.
C. Install a lower Btu/Hr replace, if lower Btu/
Hr size makes room unconned.
Figure 4 - Ventilation Air from Inside
Building
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills Into
Adjoining
Room,
Option 1
12"
12"
If the actual Btu/Hr used is less than the
maximum Btu/Hr the space can support, the
space is an unconned space. You will need
no additional fresh air ventilation.
WARNING: If the area in which
the heater may be operated does
not meet the required volume for
indoor combustion air, combus-
tion and ventilation air shall be
provided by one of the methods
described in the National Fuel
Gas Code,ANSI Z223.1/NFPA54,
the International Fuel Gas Code,
or applicable local codes.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining
unconned space. When ventilating to an
adjoining unconned space, you must provide
two permanent openings: one within 12" of the
ceiling and one within 12" of the oor on the
wall connecting the two spaces (see options
1 and 2, Figure 4). You can also remove door
into adjoining room (see option 3, Figure 4 ).
Follow the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Air for Combustion and
Ventilation for required size of ventilation
grills or ducts.
40,000
39,000
79,000

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Figure 5 - Ventilation Air from Outdoors
Outlet
Air
Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two perma-
nent openings: one within 12" of the ceiling
and one within 12" of the oor. Connect these
items directly to the outdoors or spaces open
to the outdoors. These spaces include attics
and crawl spaces. Follow the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Air for
Combustion and Ventilation for required size
of ventilation grills or ducts.
IMPORTANT: Do not provide openings for
inlet or outlet air into attic if attic has a thermo-
stat-controlled power vent. Heated air entering
the attic will activate the power vent.
WARNING: A qualied ser-
vice person must install rebox.
Follow all local codes.
WARNING: Never install
rebox
• in a bedroom or bathroom*
• in a recreational vehicle
• where curtains, furniture,
clothing, or other ammable
objects are less than 36" from
front or 42" from top of rebox;
for side clearances see Figure
4, page 11
• in high trafc areas
• in windy or drafty areas
* Unless installed log set is rated
at 10,000 Btu/Hr or less.
CAUTION: Log heaters
installed in this rebox create
warm air currents. These currents
move heat to wall surfaces next
to rebox. Installing rebox next
to vinyl or cloth wall coverings or
operating rebox where impuri-
ties (such as, but not limited to, to-
bacco smoke, aromatic candles,
cleaning uids, oil or kerosene
lamps, etc.) in the air exist, may
discolor walls or cause odors.
INSTALLATION
NOTICE: The rebox identica-
tion label (including model num-
ber, serial number, clearances,
etc.) is located on a chain under
the bottom refractory.
IMPORTANT: Vent-free gas log heaters add
moisture to the air. Although this is benecial,
installing rebox in rooms without enough
ventilation air may cause mildew to form from
too much moisture. See, page 8.
IMPORTANT: Make sure the rebox is level.
If rebox is not level, log set will not work
properly.
Note: Your rebox is designed to be used in
zero clearance installations. Wall or framing
material can be placed against any exterior
surface on the rear, sides, top or bottom of
your rebox, except where standoff spacers
are integrally attached. If standoff spacers are
attached to your rebox, these spacers can
be placed directly against wall or framing ma-
terials. Use the dimensions shown for rough
opening to create the easiest installation.
Use dimensions shown for rough openings
to create the easiest installation (see Built-In
Firebox Installation, page 12).
AIR FOR COMBUSTION AND VENTILATION
Continued

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122274-01G 11
INSTALLATION CLEARANCES
WARNING: Maintain the
minimum clearances. If you
can, provide greater clearances
from oor, ceiling, and adjoin-
ing wall.
Carefully follow the instructions below. This
will ensure safe installation.
Minimum Wall and Ceiling Clearances
(see Figure 6)
A. Clearances from the side of the replace
cabinet to any combustible material and
wall should follow diagram in Figure 6.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3 1/2" from the wall. This com-
bustible material must be 4" from the side
of the replace cabinet (see Figure 4).
B. Clearances from the top of the rebox
opening to the ceiling should not be less
than 42".
C. When the rebox is installed directly on
carpeting, tile or other combustible mate-
rial, other than wood ooring, the rebox
should be installed on a metal or wood
panel extending the full width and depth
of the enclosure.
D. Clearances from the bottom of rebox to
the oor is 0".
These reboxes can be installed as free-
standing units against a wall with approved
cabinet mantels that may be available from
your retailer or supplier, or as a built-in unit.
The clearances are the same for either instal-
lation method.
INSTALLATION
Continued
Mantel Clearances for Built-In
Installation
If placing custom mantel above built-in re-
box, you must meet the minimum allowable
clearance between mantel shelf and top of
rebox opening shown in Figure 7. These are
the minimum allowable mantel clearances
for a safe installation. Use larger clearances
wherever possible to minimize the heating of
objects and materials placed on the mantel.
CAUTION: Do not allow the
vent-free gas log heater to touch
or extend beyond the replace
screen.
NOTICE: Surface temperatures
of adjacent walls and mantels
become hot during operation.
Walls and mantels above the
firebox may become hot to
the touch. If installed properly,
these temperatures meet the
requirement of the national
product standard. Follow all
minimum clearances shown in
this manual.
Figure 7 - Minimum Mantel Clearances
for Built-In Installation
Supplied
Firebox Hood
Must Be Used
at All Times
Wire-mesh
Screen
Firebox
Noncombustible
Material May
Project Off this
Surface above
the Firebox Hood
Mantel Shelf
Note: Any portion of the
mantel shelf must NOT
extend beyond this profile.
12" 16" 20"
1 1 / 2"
6 3
/
4"
12"
Note: All vertical
measurements are
from top of fireplace
hood opening to
bottom of mantel shelf.
These minimum
clearances replace any
other recommended
clearances supplied
with your ANSI Z21.11.2
approved gas logs.
Wall board or facing
material (above
firebox) may be of
combustible material,
including decorative
mantel ornaments or
other similar projec-
tions off of the facing
material.
Framing
Material
Figure 6 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
Example
*

www.fmiproducts.com 122274-01G12
NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
of the following:
• raise the mantel to an accept-
able height
• remove the mantel
BUILT-IN FIREBOX INSTALLATION
Built-in installation of this rebox involves
installing rebox into a framed-in enclosure.
This makes the front of rebox ush with wall.
If installing a mantel above the rebox, you
must follow the clearances shown in Figure
7, page 11. Follow these instructions to install
the rebox in this manner.
1. Frame in rough opening. The rebox fram-
ing should be constructed of 2 x 4 lumber
or heavier. Use dimensions and rough
opening layout in Figure 8. Adjust framing
so that rebox ushes with nished wall
surface. If installing in a corner, use dimen-
sions in Figure 9, for rough opening.
2. Install gas piping to rebox location. See
Installing Gas Line on page 14 and Con-
necting to Gas Supply in log set owner’s
manual.
3. Carefully set firebox in front of rough
opening with back of rebox inside wall
opening.
4. Carefully insert rebox into rough opening.
5. Attach rebox to wall studs using nails
or wood screws through holes in nailing
ange (see Figure 10).
6. Install and properly test gas log heater.
Follow installation instructions included
with the vent-free gas log heater that is
being installed.
IMPORTANT: When nishing your rebox,
combustible materials such as wall board,
gypsum board, sheet rock, drywall, plywood,
etc. may be butted up next to the sides and top
of the rebox. Combustible materials should
never overlap the rebox front facing.
WARNING: Do not allow any
combustible materials to overlap
the rebox front facing.
IMPORTANT: Noncombustible materials such
as brick, tile, etc. may overlap the front fac-
ing, but should never cover any necessary
openings.
WARNING: Do not allow non-
combustible materials to cover
any necessary openings.
INSTALLATION
Continued
Figure 10 - Attaching Firebox to Wall
Studs
Nailing
Flanges
Nails or
Wood
Screws
Figure 8 - Framing Dimensions
71" (50" Models)
100" (50" Models)
65" (42" Models)
92" (42" Models)
86.5" (36" Models)
61" (36" Models)
Maintain 1 1/2"
Clearance at Sides
and Back of Fireplace
1 1/2" Clearance
Not Required at
Nailing Flanges
Figure 9 - Corner Installation
30.125"
59.375" (50" Models)
54.625"
51.375" (42" Models)
45.375" (36" Models)
28.250"
(36" Models)

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122274-01G 13
Figure 12 - Inserting Firebox Into Cabinet
Mantel (Mantel May Vary From Illustration)
Figure 11 - Installing Cabinet Mantel
(Mantel May Vary From Illustration)
Cabinet
Mantel
Gas
Piping
Gas Line
Access Hole
(Either Side
of Firebox)
INSTALLATION
Continued
WARNING: Use only non-
combustible mortar or adhe-
sives when overlapping the front
facing with noncombustible
facing material.
INSTALLING FIREBOX USING
OPTIONAL MANTELS AVAILABLE
FROM RETAILER OR CUSTOM BUILT
WARNING: A qualied ser-
vice person must install rebox.
Follow all local codes.
This rebox may be installed using a cabinet
mantel against a wall in your home. The
rebox and cabinet mantel can be installed
directly on the oor. Mantels may be avail-
able from your retailer or custom built for
your home.
1. Assemble cabinet mantel as instructed.
2. Install gas piping to rebox location. See
Installing Gas Line, page 14. You may have
to cut an access hole in the oor or wall to
run gas line to rebox. Make sure to locate
access hole so cabinet mantel will cover it
when installed (see Figure 11).
3. Place rebox on oor in desired location.
Make sure mantel will be ush against
wall when installed.
4. Carefully slide cabinet mantel over rebox.
Be careful not to scratch rebox, cabinet
mantel, ooring, etc., when installing (see
Figure 12).
5. Install and properly test gas log heater.
Follow installation instructions included
with the vent-free gas log heater that is
being installed.

www.fmiproducts.com 122274-01G14
FIREBRICK WALL INSTALLATION
IMPORTANT: Installation of brick
should be done after the re-
place is placed in a permanent
location.
1. The replace is shipped with the hearth
preinstalled. It is held in place for ship-
ping with 3 shipping brackets (Figure 13).
Remove these brackets before installing
any of the other rebrick walls.
Figure 13 - Removing Shipping Brackets
Shipping
Brackets
2. Install the left and right rebrick walls.
There is a bracket with 2 tabs on the
bottom of each rebrick wall. Angle the
wall into the replace opening and into
the slots on the side of the hearth (Figure
14), then tilt the top of the panel toward
the rebox surround.
Hearth
Right Face
Slot
Figure 14 - Slots for Firebrick Walls
3. Secure the rebrick wall using 2 of the
retainers provided. The bracket will slip
underneath the metal lip on the top of the
wall and screw into the inner dome of the
replace (Figure 15).
Figure 15 - Installing Side Walls
Retaining
Bracket
Leading
Bricks
Right Wall
4. Install the rear rebrick wall last. Place the
wall face side down on the hearth with the
bottom of the wall toward the rear of the
rebox and the top toward the front of the
replace. Tilt the wall up toward the back
of the rebox. Secure with 2 rear retaining
bracks provided (Figure 16).
Figure 16 - Installing Rear Wall
Retaining
Bracket
5. It is recommended that the joints between
all rebrick walls be grouted for a more
nished look. See page 15. For grouting
instructions.
For more information and to watch a how to
video go to www.fmiproducts.com and select
Technical Support.

www.fmiproducts.com
122274-01G 15
Figure 17 - Screw and Hood Placement
Screws
GROUTING INSTRUCTIONS
Material provided:
Bag of cement
Bag of sand
Material required:
Piping bag
Joints striker
Heavy duty mixing bucket
Sponge or Wet Cloth
1. Moisten brick surface with damp sponge
or spray bottle just prior to application.
When bricks are wet, any excess grout
mixture on bricks will easily wipe off.
2. In a heavy duty mixing bucket, add equal
parts cement and sand. Add enough water
and mix together well using a power drill
with mixing wand attachment to a yogurt
like consistency. Not adding enough water
can lead to grout falling out after burning.
3. The overall length of piping bag should be
about 16". If the bag is longer than 16",
cut it down to size by removing end with
larger opening. This will make the bag
easier to handle.
4. Put grout mixture into piping bag making
sure the smaller opening is downward and
over a moist towel to avoid spilling. Place
a wet towel over the bucket making sure it
is directly on the surface of grout mixture.
This will keep the mixture moist and it will
not dry out before use.
5. Grout all joints where two rebrick walls
come together.
6. Using a trowel, remove excess grout mix-
ture by moving trowel in the direction of
the joint. Grout mixture in the joint should
now be ush with brick surface. If not
enough grout is applied into each space,
grout may fall out after burning.
7. Using a joint striker, smooth out grout line.
Allow 72 hours before
operating replace.
FIREBRICK WALL INSTALLATION
Continued
Rating
Plate
Hole for Screen
Rod
Leading Bricks
Figure 18 - Installing Fireplace Screen
INSTALLING FIREPLACE HOOD
AND SCREENS
1. Attach hood to rebox using screws pro-
vided (see Figure 17).
1. Slide round end of screen rod into rings at
top of screen. Attach one push-on nut to end
of rod before attaching last ring of screen.
2. Insert the round end screen rod into hole
on the left and right side of smoke shelf
(Figure 18).
3. Mount at end of screen rod with #10 x 5/8"
to center of smoke shelf.
4. Install other screen rod in same manner.

www.fmiproducts.com 122274-01G16
WARNING: A qualied ser-
vice person must connect heater
to gas supply. Follow all local
codes.
IMPORTANT: See Connecting to Gas Supply
in your log set owner’s manual for details on
gas hookup.
Note: Before you proceed, make sure your
gas supply is turned off.
Use only a 1/2" black iron pipe and appropri-
ate ttings.
1. Remove knockout indentation on refrac-
tory or rebrick wall located above refrac-
tory hearth oor. Knockout indentation
must be rmly tapped with any solid object
such as a 1/2" dowel until it is released.
Remove fragmented portions of refractory
(see Figure 19).
2. Remove gas line cover plate located on
either side of replace and pull out insula-
tion from gas line conduit sleeve. Save
insulation for reuse. Replace screws.
3. Run a 1/2" black iron gas line into replace
through the rear at gas line conduit sleeve (if
using a raised platform, add height). Provide
sufcient gas line into replace chamber for
tting connection (see Figure 20).
Note: Secure incoming gas line to wood
framing to provide rigidity for threaded end.
4. Repack insulation around gas line and into
sleeve opening. Seal any gaps between
gas line and refractory knockout hole with
refractory cement or commercial furnace
cement, Install the gas appliance or cap-off
gas line if desired.
Figure 19 - Gas Line Access
Side
Firebrick
Finished
Side
Brick with
Access
Hole
Outside of
Fireplace
Gas Line
Conduit
Insulation
Gas
Conduit
Cover
1/2" Dowel
Seal
Opening
with
Refractory
Cement
Outside of
Fireplace
Gas Line
Conduit
Repack
Insulation
Incoming
1/2" Black
Iron Pipe
Side
Firebrick
Finished
Side
Provide Enough
Threaded
End for Fitting
Connection
Figure 20 - Gas Line Installation
Remove
Knockout
GAS LINE INSTALLATION
CAUTION: All gas piping
and connections must be tested
for leaks after the installation
is completed. After ensuring
that the gas valve is on, apply
soap and water solution to all
connections and joints. Bubbles
forming show a leak. Correct
all leaks at once. DO NOT USE
AN OPEN FLAME FOR LEAK
TESTING AND DO NOT OPER-
ATE ANY APPLIANCE IF A LEAK
IS DETECTED. LEAK TESTING
SHOULD BE DONE BYAQUALI-
FIED SERVICE PERSON.

www.fmiproducts.com
122274-01G 17
ACCESSORIES
TECHNICAL SERVICE
You may have further questions about in-
stallation, operation, or troubleshooting.
If so, contact FMI PRODUCTS, LLC at
1-866-328-4537.
When calling please have your model and se-
rial numbers of your replace ready.
You can also visit our web site at
www.fmiproducts.com.
REPLACEMENT PARTS
If this product is missing a part or has a broken
component, please do not return it to the store.
Call FMI PRODUCTS, LLC at 1-866-328-4537
to answer questions and replace parts under
warranty.
Note: Use only original replacement parts.
This will protect your warranty coverage for
parts replaced under warranty.
When calling or writing, please have your
model and serial numbers of your replace
ready.
Model and serial number information are in the
replace's rating plate located on the replace
smoke shelf.
OPTIONAL OUTSIDE AIR KIT FOR
FLOOR INSTALLATION - AK4F
OPTIONAL OUTSIDE AIR KIT FOR
SIDEWALL INSTALLATION - AK4

www.fmiproducts.com 122274-01G18
PARTS
MODELS (V)UM SERIES AND (V)QM SERIES
11
10
11
13
14
15/16
14
4
3
22
20
21
20
1
19
514
15/16
13
12
11
9
7
6
8
17
212
18

www.fmiproducts.com
122274-01G 19
KEY
NO. PART NO. DESCRIPTION QTY.
1 ** Face Assembly •••••• 1
2 ** Firebox Bottom Assembly •••••• 1
3 ** Firebox Bottom •••••• 1
4 ** Firebox Surround •••••• 1
5 ** Insulation Pan Support •••••• 1
6 ** Insulation Pan •••••• 1
7 ** Top Insulation •••••• 1
8 110454-03 Fireplace Top 36" • • 1
110454-02 Fireplace Top 42" • • 1
110454-01 Fireplace Top 50" • • 1
9 23490SA Standoff •••••• 4
10 ** Fireplace Surround Assembly •••••• 1
11 109720-02 Clearance Spacer •••••• 6
12 117891-01 Fireplace Handle Bracket •••••• 4
13 20042 Outside Air Cover Plate •••••• 2
14 21171 Gas Conduit Cover •••••• 4
15 109752-01 Conduit One •••••• 2
16 109752-02 Conduit Two • • • • • • 2
17 ** Heat Shield Support •••••• 1
18 123298-02 Ash Box Assembly •••••• 1
19 ** Firebox Top •••••• 1
20 109457-03 Screen 36" • 2
109457-02 Screen 42" • 2
109457-01 Screen 50" • 2
117556-03 Screen 36" Stainless • 2
117556-02 Screen 42" Stainless • 2
117556-01 Screen 50" Stainless • 2
21 20806 Screen Rod 36" • 2
110146-03 Screen Rod 42" • 2
110146-02 Screen Rod 50" • 2
117568-03 Screen Rod 36" Stainless • 2
117568-02 Screen Rod 42" Stainless • 2
117568-01 Screen Rod 50" Stainless • 2
22 109511-01 Hood 50" • 1
109511-02 Hood 42" • 1
109511-03 Hood 36" • 1
109511-04 Hood Stainless 36" • 1
109511-05 Hood Stainless 42" • 1
109511-06 Hood Stainless 50" • 1
PARTS AVAILABLE NOT SHOWN
see page 20 Firebrick Walls ••••••
** Not a eld replaceable part.
(V)UM36 (V)UM42 (V)UM50
(V)QM36 (V)QM42 (V)QM50
PARTS
This list contains replaceable parts used in your rebox. When ordering parts, follow the
instructions listed under Replacement Parts on page 17 of this manual.

www.fmiproducts.com 122274-01G20
PARTS
MODELS MODELS (V)UM SERIES AND (V)QM SERIES
Picture may vary from actual
1
6
4
8
7
3
2
5
7
7
7
8
9