FMI GMCAT42 Series Quick start guide

OWNER’S OPERATION AND
INSTALLATION MANUAL
INDOOR WOOD BURNING
(V)GMCAT42/50(H,S)(I,R)A
SERIES
INDOOR/OUTDOOR WOOD
BURNING
(V)JMCAT42/50(H,S)(I,R)A
SERIES MASONRY FIREPLACES
WITH INSULATION
PFS
®
USC
For more information, visit www.fmiproducts.com
These models meet the EPA Wood Burning Fireplace
Program Phase 2 emission level. NOTE: To ensure proper
replace operation, the catalyst should be replaced at a
minimum of 3 years and a maximum of 5 years.
SAVE THIS BOOK
This book is valuable. In addition to instructing you
on how to install and maintain your appliance, it also
contains information that will enable you to obtain re-
placement parts or accessory items when needed. Keep
it with your other important papers.
This replace is approved for use as a wood burning
replace or for use with a vented gas log approved to
ANS Z21.60 and Z21.84 standards.
This wood burning replace complies with UL127-CAN/
ULC-S610-M87 standard as a FACTORY BUILT FIREPLACE.
FOR CANADA: The authority having jurisdiction (such
as the municipal building department, re department,
etc.) should be contacted before installation to deter-
mine the need to obtain a permit.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.

www.fmiproducts.com 125701-01C2
WARNING: Improper installation, adjustment, altera-
tion, service or maintenance can cause injury, property
damage or loss of life. Refer to this manual for assis-
tance or additional information. Consult a qualied
installer or local distributor.
TABLE OF CONTENTS
Safety .................................................................. 2
Specications ...................................................... 3
Fireplace Installation............................................ 5
Venting Installation .............................................. 7
Firebrick Wall Installation................................... 12
Optional Gas Line Installation............................ 15
PureFire Installation........................................... 16
Glass Door Installation ...................................... 17
Operation and Maintenance Guidelines ............ 18
PureFire Emissions Control System.................. 19
Technical Service............................................... 21
Replacement Parts............................................ 21
Parts ................................................................. 22
Accessories ....................................................... 26
SAFETY
FOR YOUR SAFETY
• Do not store or use gasoline
or any other ammable vapors
or liquids in the vicinity of this
or any other appliance.
• 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 materials on or near
the appliance.
• Never leave children unat-
tended when a re is burning
in the replace.
WARNING: Use solid wood
or processed solid fuel relogs
only. When processed wood fuel
re logs are used, do not poke or
stir the logs while they are burn-
ing. Use only re logs that have
been evaluated for the application
in replace and refer to re log
warnings and caution markings
on packaging prior to use.
This replace is not intended to be
used as a substitute for a furnace
to heat an entire home. Use for
supplemental heat only.
IMPORTANT: Check local codes
before installing this replace.
Before beginning the installation of the
fireplace, read these instructions through
completely.
• This FMI PRODUCTS, LLC replace and its
components are safe when installed accord-
ing to this installation manual. Unless you
use FMI PRODUCTS, LLC components,
which have been designed and tested for
the replace system, you may cause a re
hazard.
• The FMI PRODUCTS, LLC warranty will
be voided by and FMI PRODUCTS, LLC
disclaims any responsibility for the follow-
ing actions.
a. Modification of the fireplace, com-
ponents, doors, air inlet system and
damper control.
b. Use of any component part not manu-
factured or approved by FMI PROD-
UCTS, LLC in combination with a FMI
PRODUCTS, LLC replace system.
Proper installation is the most important step
in ensuring safe and continuous operation
of the replace. Consult the local building
codes as to the particular requirements
concerned with the installation of all factory
built replaces.
WARNING: Do not install a
replace insert in this box unless
the manufacturer's instructions
with the insert specically state
this replace has been tested for
use with this insert.

www.fmiproducts.com
125701-01C 3
SPECIFICATIONS
42" MODELS
22 3/4"
30 1/2"
29"
4 3/8"
15 3/4"
5/8"
17 5/8"
67"
61"
49"
7"
1"
30"
11"
58"
42"
51
1
/
8
"
4 1/2"
3 1/2"
9 1/2"
10 1/2"
81/2"
13"
17"
OUTSIDE
AIR
ACCESS
GAS LINE
ACCESS
42" HEARTH
1 1/4"
23"
(Ref.)
41 3/8"
26 3/8"
21 3/4"
Figure 1 - 42" Models (V)GMCAT42(H,S)(I,R)A AND (V)JMCAT42(H,S)(I,R)A Series

www.fmiproducts.com 125701-01C4
SPECIFICATIONS Continued
50" MODELS
38 1/2"
28 1/2"
43/8"
17 5/8"
19 1/4"
24"
49"
30"
11"
61"
67" 58"
7"
1"
59"
50" 4 1/2"
3 1/2"
9 1/2"
10 1/2"
8 1/2"
13"
17"
GAS LINE
ACCESS
OUTSIDE
AIR
ACCESS
50" HEARTH
1 1/4"
23"
(Ref.)
49 3/8"
34 3/8"
21 3/4"
Figure 2 - 50" Models (V)GMCAT50(H,S)(I,R)A AND (V)JMCAT50(H,S)(I,R)A Series

www.fmiproducts.com
125701-01C 5
FIREPLACE INSTALLATION
FRAMING
1. Frame opening for replace using dimen-
sions shown in Figures 2 and 3.
2. If replace is to be installed directly on
carpeting, tile (other than ceramic) or any
combustible material other than wood
ooring, replace must be installed upon
a metal or wood panel extending full width
and depth of replace.
3. Set replace directly in front of this open-
ing and slide unit back until nailing anges
touch side framing.
4. Check level of the replace and shim with
sheet metal if necessary.
5. Before securing fireplace to prepared
framing, ember protector (provided) must
be placed between hearth extension (not
supplied) and under bottom front edge of
replace to protect against glowing embers
falling through. If replace is to be installed
on a raised platform, a Z-type ember pro-
tector (not supplied) must be fabricated to
t your required platform height. Ember
protector should extend under replace a
minimum of 1 1/2". Ember protector should
be made of galvanized sheet metal (28
gauge minimum to prevent corrosion.
6. Using screws or nails, secure replace to
framing through anges located on sides
of replace.
SELECTING LOCATION
To determine the safest and most efcient
location for the replace, you must take into
consideration the following guidelines:
1. The location must allow for proper clear-
ances (see Figures 5 and 6).
2. Consider a location where replace will
not be affected by drafts, air conditioning
ducts, windows or doors.
3. A location that avoids cutting of joists or
roof rafters will make installation easier.
4. An outside air kit is available with this
replace (see Optional Outside Air Kit on
page 7).
MINIMUM CLEARANCE TO
COMBUSTIBLES
Back and sides of replace 1 1/2" min.*
Front of replace 48" min.
Floor** 0" min.
Perpendicular wall to opening 18" min.
Top spacers 0" min.
Mantel clearances see Mantels, page 6
Chimney outer pipe surface 2" min.
* Not required at nailing anges
** See step 2 of Framing
WARNING: Do not pack re-
quired air spaces with insulation
or other materials.
Minimum/Maximum Chimney Height for
Residential Installation
Minimum height of chimney, measured from
base of replace to ue gas outlet of termina-
tion, is 16 feet for straight ue or a ue with
one elbow set. Maximum distance between
elbows is 6 feet. For systems with two elbow
sets, minimum height is 22 feet. Maximum
height of any system is 50 feet. This measure-
ment includes replace, chimney sections and
height of termination assembly at level of the
ue gas outlet (see Figure 14, page 10).
Minimum/Maximum Chimney Height for
Outdoor Installation
Minimum height of chimney, measured from
base of replace to ue gas outlet of termina-
tion, is 9.5 feet (minimum of 4 feet of chimney
pipe sections required for outdoor installation).
Figure 3 - Framing Dimensions
Figure 4 - Corner Installation
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
30.125"
59" (50" Models)
58.125"
67.125"
51.25" (42" Models)
45.25" (36" Models)
28.250" (36" Models)

www.fmiproducts.com 125701-01C6
Note: For outdoor installations, fireplace
enclosure must allow for adequate drainage
and fresh air ventilation. It is recommended
that a sealed, corrosion resistant catch pan
with provision for drainage be installed under
replace within replace enclosure.
HEARTH EXTENSION
A hearth extension projecting a minimum of
20" in front of and a minimum of 12" beyond
each side of replace opening is required to
protect combustible oor construction in front
of replace. Fabricate a hearth extension
using a material which meets the following
specications: a layer of noncombustible,
inorganic material having a thermal conduc-
tivity of K=0.84 BTU IN/FT, HR. F (or less) at
1" thick. For example, if the material selected
has a K factor of 0.25, such as glass ber, the
following formula would apply:
0.25 x 1.0" = 0.30" thickness required
0.84
Thermal conductivity "K" of materials can be
obtained from manufacturer or supplier of
noncombustible material. If hearth extension
is to be covered, use noncombustible mate-
rial such as tile, slate, brick, concrete, metal,
glass, marble, stone, etc. Provide a means
to prevent hearth extension from shifting and
seal gap between replace frame and hearth
extension with a noncombustible material
(see Figure 5).
WARNING: Hearth extension
is to be installed only as shown
in Figure 4.
FIREPLACE INSTALLATION
Continued
Figure 5 - Hearth Extension
Seal Gap
Fireplace Front
Ember Protector
Fireplace Front
Raised Hearth
Fireplace Front
Elevated
Ember Protector
Ember Protector
Seal Gap
Hearth
Extension
MANTELS
A mantel may be installed if desired (see Figure
6). Woodwork such as wood trims, mantels
or any other combustible material projecting
from front face must not be placed within 18"
of replace opening. Combustible materials
above 18" and projecting more than 1 1/2" from
replace must not be placed less than 21" from
the top opening of the replace (NFPA STD
211, Sec. 7-3.3.3).
Mantels or any other combustible material
also may come up to side edge of black metal
face of replace as long as projections from
front face fall within limit shown in Figure 6.
12 1/4" Ref.
6"
Ref.
21" Min.
18" Min.
11/2" Max.
3" Nom.
33°
Combustible
Material
Safe
Zone for
Projection of
Combustible
Materials
Fireplace Opening
Upper
Section of
Fireplace
Figure 6 - Mantel Clearances to
Combustible Material
FIREBOX
SAFE ZONE
Top View of Fireplace
3" Max.
4.5"
18" Min. to
Perpendicular
Side Wall
11.5"
33° Combustible
Material Must
Not Overlap
Front Face

www.fmiproducts.com
125701-01C 7
Figure 7 - Lineal Gain
LINEAL GAIN
PART NO. DESCRIPTION GAIN
Georgian Fireplace 66 1/2 "
12-12DM
12-12HT Pipe Section 10 5/8
"
18-12DM
18-12HT Pipe Section 16 5/8
"
24-12DM
24-12HT Pipe Section 23 5/8
"
36-12DM
36-12HT Pipe Section 34 5/8
"
48-12DM
48-12HT Pipe Section 46 5/8
"
RLT-12D
RLT-12HT Round Termination 7 3/4
"
*
STL-12D Square Chase-Top
with Slip Section 7
" to 15 " *
* The lineal gain for the terminations is mea-
sured to the ue gas outlet height.
Hemmed
End
12 3/8"
Stainless
Inner Pipe
15" Galvanized
Outer Pipe
ASSEMBLY AND INSTALLATION OF
DOUBLE WALL CHIMNEY SYSTEM
Each double wall chimney section consists of a
galvanized outer pipe, a stainless steel inner ue
pipe and a wire spacer. The pipe sections must
be assembled independently as the chimney is
installed. When connecting chimney directly to
the replace, the inner ue pipe section must
be installed rst with the lanced side up. The
outer pipe section can then be installed over
5 the ue pipe section with the hemmed end
up. Press down on each pipe section until the
lances securely engage the hem on the replace
starter. The wire will assure the proper spacing
between the inner and outer pipe sections.
Figure 7 - Outside Air Kit
Secure to Collars with Metal Tape,
Screws or Straps (Min. of 1/4" x 20"
in size)
Air Inlet
Location
Must Allow
For Bushes
or Snow
Vent Hood
Required for
Wall Installation
Air Inlet
Eyebrow
Vented Crawl Space
(Check Local Codes
Before Installing in a
Vented Crawl Space)
CHIMNEY PIPE
The FMI PRODUCTS, LLC chimney system
consists of 12", 18", 24", 36" and 48" snap-
lock, double-wall pipe segments, planned
for maximum adaptability to individual site
requirements. Actual lengths gained after
tting overlaps must be taken into consider-
ation (lineal gain) and are given in the lineal
gain chart (see Figure 8). Lineal Gain is the
actual measurable length of a part after two or
more parts are connected. For Canada, use
chimney parts designated "HT".
VENTING INSTALLATION
OPTIONAL OUTSIDE AIR KIT
(MODEL AK4/AK4F)
The installation of an outside air kit should
be performed during the rough framing of
the replace due to the nature of it's location.
Outside combustion air is accessed through
a vented crawl space (AK4F) or through a
sidewall (AK4).
CAUTION: Combustion air
inlet ducts shall not terminate
in attic space.
The maximum height for the
air vent can not exceed 3 feet
below the ue gas outlet of the
termination.
WARNING: The opening in
the collar around the chimney at
the top of the replace must not
be obstructed. Never use blown
insulation to ll the chimney
enclosure.

www.fmiproducts.com 125701-01C8
VENTING INSTALLATION
Continued
OFFSET RISE CHIMNEY LENGTH
A B 12" 18" 24" 36" 48"
4 3/8" 16 3/8" ELBOW SET ONLY
9 3/4" 25 1/2" 1
12 3/4" 30 3/4" 1
15" 34 3/4" 1
18" 40" 1 1
21 1/4" 46 1/4" 1
23 3/4" 49 1/4" 1 1
27 3/4" 56 3/4" 1
30" 60 3/4" 1 1
33" 66" 1
36" 71" 1 1
38 1/4" 75" 2
41 1/4" 80 1/4" 1 1 1
45" 86 3/4" 2
46 3/4" 89 1/2" 1 1 1
51" 97" 1 1
53 1/4" 101" 2
56 1/4" 106 1/4" 2
59 1/4"111 1/2" 1 1 1
61 3/4" 115 1/2" 1 2
64 3/4" 120 3/4" 1 2
68 1/4" 127" 2 1
70" 130" 1 1 2
74 1/4" 137 1/2" 1 2 1
76 3/4" 141 1/2" 1 2 1
79 3/4" 146 3/4" 4
OFFSET CHART (22-50 FT. SYSTEM HEIGHT)
Figure 10 - Ceiling Support Pipe
12S-12DM
2" Min.
Straps
Straps
Straps
Straps
Detail A
Return Elbow
Detail B
Angle Firestop
See Detail A
See Detail B
Continue to assemble chimney sections as
outlined above, making sure that both the
inner and outer pipe sections are locked to-
gether. When installing double wall snap-lock
chimney together, it is important to assure
the joint between the chimney sections is
locked. Check by pulling chimney upward
after locking. The chimney will not come apart
Figure 9 - Elbow Offset
B
A
Screws
if properly locked. It is not necessary to add
screws to keep the chimney together (excep-
tion, see Figure 9).
USING ELBOW OFFSETS (30E-12DM)
1. To achieve desired offset, you may install
combinations of 12", 18", 24", 36" and 48"
length of double wall pipe (see offset chart
and Figure 9).
2. Chimney weight above offset rests on re-
turn elbow. Straps must be securely nailed
to rafters or joists (see Figure 9, details A
and B).
3. Maximum length of pipe between sup-
ports (return elbow or 12S-12DM) is 6'
of angle run. Maximum of two 6' angle
run sections per chimney system (see
Figure 11, page 9).
4. All pipe connections between the offset
and return must be secured with two
screws on the outer pipe only (see
Figure 9). Do not penetrate the inner
stainless.

www.fmiproducts.com
125701-01C 9
VENTING INSTALLATION
Continued
FIRESTOP SPACERS (FS-10)
Firestop spacers are required at each point
where the chimney penetrates a oor space.
Their purpose is to establish and maintain
the required clearance between the chimney
and the combustible materials. When the pipe
passes through a framed opening into a living
space above, the restop must be placed onto
the ceiling from below as shown in Figure 12.
They also provide complete separation from
one oor space to another or attic space as
required by most codes. When the double wall
pipe passes through a framed opening into an
attic space, the restop must be placed into an
attic oor as shown in Figure 13.
Figure 12 - Firestop Spacer with Living
Space Above Ceiling
Figure 13 - Firestop Spacer with Attic
Space Above Ceiling
Existing
Ceiling
Frame
Firestop
Spacer
Screws or
Staples
(Min. of 8)
Firestop
Spacer
Screws or Staples
(Min. of 8)
PENETRATING ROOF
To maintain a 2" clearance to the pipe on a
roof with a pitch, a rectangular opening must
be cut.
1. Determine center point through which pipe
will penetrate roof.
2. Determine center point of roof. Pitch is
distance the roof drops over a given span,
usually 12". A 6/12 pitch means that roof
drops 6" for each 12" measured horizon-
tally down from roof rafters.
3. Use roof opening chart (Figure 14, page
10) to determine correct opening length
and ashing required.
4. Remove shingles around opening mea-
sured. Cut out this section.
Existing
Ceiling
Frame
Figure 11 - Typical Offset Terminations
Return
Elbow
Offset
Elbow
Return
Elbow
Offset
Elbow
6' Max.
6' Max.
6' Max.
6' Max.
6' Max.
6' Max.
Return
Elbow
Offset
Elbow
Offset
Elbow
Return
Elbow
A B C
Offset
Elbow
Ceiling
Support Pipe
12S-12DM
Return
Elbow

www.fmiproducts.com 125701-01C10
VENTING INSTALLATION
Continued
5. Add next sections of pipe until end
penetrates roof line. Check to see that
proper clearances are maintained. Extend
chimney by adding sections of double wall
pipe until pipe is minimum of 30" above
highest point of roof cutout. Termination
and chimney must extend a minimum of
36" above highest point where it passes
through roof.
Nail Only
Outer
Perimeter
of Flashing
Storm Collar
Flashing
Cone
Underlap Shingles
at Bottom
Overlap
Shingles Top
and Sides Only
Figure 15 - Flashing Installation
FLASHING INSTALLATION (V6F-10DM
OR V12F-10DM)
Determine the ashing to be used with the
roof opening chart. Slide ashing over pipe
until base is at against roof. Replace as
many shingles as needed to cover exposed
area and ashing base. Secure in position by
nailing through shingles (see Figure 15). DO
NOT NAIL THROUGH FLASHING CONE.
Storm Collar Installation (SC2-1)
Place storm collar over pipe and slide down
until it is snug against the open edge of the
ashing (see Figure 16). Apply waterproof
caulk around the perimeter of the collar to
provide a proper seal.
Figure 16 - Storm Collar
Chimney
Pipe
Waterproof
Caulk
Storm
Collar Flashing
Pitch Slope Opening
"A" Max.
Used Flashing
Model No.
Flat 0° 19.5" V6F-10DM
0-6/12 26.6° 22' V6F-10DM
6/12-12/12 45.0° 27" V12F-10DM
19.5" Min. 30" Min.
2" Min.
2" Min.
2" Min.
Opening "A"
Figure 14 - Roof Opening Measurements
Installing Flashing on a Metal Roof
When installing the ashing on a metal roof,
it is required that putty tape be used between
the ashing and the roof. The ashing must be
secured to the roof using #8 x 3/4" screws and
then sealed with roof coating to prevent leak-
age through the screw holes. A roof coating
must also be applied around the perimeter of
the ashing to provide a proper seal.

www.fmiproducts.com
125701-01C 11
VENTING INSTALLATION
Continued
10 FOOT RULE
All ue gas outlet chimney terminations must
extend a minimum of 3 feet in height above
the highest point where it passes through
the roof and must be at least 2 feet above
the highest point of the roof that is within a
horizontal distance of 10 feet (see Figure 19).
FINISHING FIREPLACE
Combustible materials, such as wallboard,
gypsum board, sheet rock, drywall, plywood,
etc. may make direct contact with sides and top
around the replace face. It is important that
combustible materials do not overlap the face
itself. Brick, glass, tile or other noncombustible
materials may overlap the front face provided
they do not obstruct essential openings like
louvered slots or any other opening. When
overlapping with a noncombustible facing
material, use only noncombustible mortar or
adhesive.
24" Min.
24" Min.
18"
Min.
Typ.
Figure 18 - Multiple Chase Installation
10'
2' Min.
10'
3' Min.
2' Min. 3' Min.
Level of
Flue Gas
Outlet
Figure 19 - 10 Foot Rule
Terminations/Spark Arrestor
The replace system must be terminated with
the listed round top or chase terminations. In
any case, refer to the installation instructions
supplied with the termination.
CAUTION: Do not seal open-
ings on the rooftop ashing. Fol-
low the installation instructions
provided with the termination
being used.
RLT-12D
Level of
Flue Gas
Outlet
Stainless
Inner Flue
Pipe
Waterproof
Caulking
Storm
Collar
Flashing
Underlap
Shingles
Figure 17 - Termination
Overlap
Shingles (Top
and Sides of
Flashing Base)
CHASE INSTALLATIONS
Instructions for chase installations are
included with the chase style termination
chosen. In a multiple chase installation, be
sure to provide adequate distance between
terminations to prevent smoke spillage from
one termination to another. We suggest that
terminations be separated at least 24", center
to center and stacked at a vertical height dif-
ference of 18" (see Figure 18).
Note: If a decorative shroud is to be installed,
contact the manufacturer for specications.
Secure
Termination
to Outer
Pipe with 3
Screws

www.fmiproducts.com 125701-01C12
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 20).
Remove these brackets before installing
any of the other rebrick walls.
Figure 20 - 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
21), then tilt the top of the panel toward
the rebox surround.
Hearth
Right Face
Slot
Figure 21 - 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 22).
Figure 22 - Installing Side Walls
Retaining
Bracket
Leading
Bricks
Right Wall

www.fmiproducts.com
125701-01C 13
FIREBRICK WALL INSTALLATION
Continued
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.
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
brackets provided (Figure 23).
Figure 23 - Installing Rear Wall
Retaining
Bracket
5. It is recommended that the joints between
all rebrick walls be grouted for a more
nished look. See left for grouting instruc-
tions.
For more information and to watch a how to
video go to www.fmiproducts.com and select
Technical Support.

www.fmiproducts.com 125701-01C14
INSTALLING GRATE RETAINERS
1. Place the provided grate retainers on the
hearth as shown in Figure 25. The back
of the retainer will be ush with the rear
rebrick wall. Mark the center of the hole
on the hearth with a marker.
2. Drill two holes in the hearth in the marked
locations using a masonry 3/16" drill bit.
3. Secure grate retainer with masonry screws
provided.
WARNING: Risk of re! Re-
place grate with FMI PRODUCTS,
LLC grate only (see Parts, page
22). This grate has been de-
signed to keep the operation of
your replace safe and efcient.
FIREBRICK WALL INSTALLATION
Continued
Figure 25 - Installing Grate Retainers
INSTALLING SCREEN
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 24).
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.
Figure 24 - Installing Fireplace Screen
Rating
Plate
Hole for Screen
Rod
Leading
Bricks

www.fmiproducts.com
125701-01C 15
Gas line hook up should be done by your
supplier or a qualied service person.
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 26).
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 27).
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.
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 BY A QUALI-
FIED SERVICE PERSON.
Figure 26 - 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 27 - Gas Line Installation
Remove
Knockout
OPTIONAL GAS LINE INSTALLATION
A gas line or gas log lighter may be installed
for the purpose of installing a vented or vent-
free decorative gas appliance incorporating an
automatic shutoff device and complying with
the Standard for Decorative Gas Appliances for
Installation in Vented Fireplaces, ANSI Z21.60
or American Gas Association draft requirements
for Gas Fired Log Lighters for Wood Burning
Fireplaces, Draft NO. 4 dated August, 1993.
If you install a decorative gas appliance
(vented gas log), the decorative gas appliance
must comply with the Standard for Decorative
Gas Appliance for Installation in Solid Fuel
Burning Fireplaces, ANS Z21.60 or Z21.84
and shall also be installed in accordance with
the National Fuel Gas Code, ANSI 7223NFPA
54 latest edition.
WARNING: Do not operate an
unvented gas log set in this re-
place with the chimney removed.

www.fmiproducts.com 125701-01C16
AIR DEFLECTOR AND GLASS DOOR INSTALLATION
INSTALLING AIR DEFLECTORS (42''
MODELS ONLY)
Slide air deector in between the front side
face and side brick panel (see Figure 30, page
17). The notched end of the deector sits on
bottom hearth. Air deector does not require
any fastening.
The front side faces and side brick panels
will hold the deector in place (see Figure
30, page 17).
If you wish to install an unvented (vent-free)
gas log set, only unvented gas log sets which
have been found to comply with the standard
for unvented room heaters, ANSI Z21.11.2 are
to be installed in this replace.
WARNING: If the replace
has been used for wood burning,
the rebox and chimney must be
cleaned of soot, creosote and
ashes be a qualied chimney
cleaner. Creosote will ignite if
heavily heated.
WARNING: When using a
decorative vented gas log, the
damper must be removed or
permanently locked in the fully
openposition andthe glassdoors
must be in the fully open position.
OPTIONAL GAS LINE INSTALLATION
Continued
PUREFIRE HOOD INSTALLATION
1. The PureFire hood supplied with this re-
place is packaged in a separate box and
placed in the rebox during shipping.
2. Remove hood from box. Locate brackets
(quantity 2) and screws (quantity 4) for
hood installation in the hardware bag.
3. Using screws provided, secure the bracket
to the inner dome of the replace as shown
in Figure 28. The left and right bracket are
different. The edge that is straight will be
closer to the replace opening.
4. Lift hood up into the replace and place it
on the retaining brackets (Figure 28). The
rear of the hood will touching the rear of
the replace.
Figure 28 - Installing PureFire Hood
DOOR FRAME MODELS
BDMO42/50E/G/C
Installation
1. Remove screws from smoke shelf (see
Figure 29, page 30).
2. Mount top door frame and secure with
screws provided (see Figure 29, page 17).
3. Place bottom door frame on top of ash lip
at front of replace (see Figure 30, page
17).
4. Secure bottom door frame to brick with
two hex screws provided as shown in
Figure 30, page 17 using a 7/16" open
end or adjustable wrench.

www.fmiproducts.com
125701-01C 17
INSTALLING GLASS DOORS
Spring clips have been installed but some
adjustments may be needed. Install the doors
using the following steps:
1. With bifold doors completely folded, insert
bottom pivot pin into pivot hole located
near bottom corner of front face opening
and swing door to vertical position making
sure top pins slide into door track. Door
is installed when top door pin snaps into
spring clip.
2. Repeat step 1 for remaining door.
If you nd the doors do not close properly or
do not appear level or straight, proceed with
section on door adjustment,
Figure 31 - Installing Bi-Fold Doors
Spring
Clip
Insert Pin
into Spring
Clip
Pivot
Hole
Insert
Bottom
Pivot Pin
into Hole
Fold Door
and Slide
Top Pins
Into Track
Figure 32 - Adjusting Bi-Fold Doors
DOOR ADJUSTMENT
Remove doors and slightly loosen lower pivot
clips and upper spring clips. Replace doors
and fully close them. Use 1/8" shims (any
material) to level doors. Once proper setting
is achieved, carefully open doors enough so
that you can access spring clips with a phillips
screwdriver. Tighten screws. See Figure 32.
AIR DEFLECTOR AND GLASS DOOR INSTALLATION
Continued
Figure 30 - Installing Bottom Door Frame
and Air Deector
Hex
Screw
Bottom
Door
Frame
Figure 29 - Installing Top Door Frame
Top Door
Frame
Smoke
Shelf
Ash Lip
Ash Lip
Air
Deector

www.fmiproducts.com 125701-01C18
OPERATION AND MAINTENANCE GUIDELINES
GLASS DOORS
Glass doors are optional with the replace.
When replace is in operation, doors must be
fully opened or fully closed position only or a re
hazard may be created (see Figure 33).
A replace equipped with glass doors operates
much differently than a replace with an open
front. A replace with glass doors has a limited
amount of air for combustion.
Excessive heat within the replace can result if
too large a re is built or if combustion air gate
is not completely open. The following tips should
be followed to assure that both the replace
and glass door retain their beauty and function
properly. Both the ue damper and glass doors
must be fully opened before starting re. This will
provide sufcient combustion air and maintain
safe temperatures in rebox.
IMPORTANT: The glass must be allowed to
warm slowly and evenly. The tempered glass will
withstand a gradual temperature rise to 550° F,
which is more than a normal re will generate.
Such materials as pitch/wax laden logs, very dry
mill end lumber and large amounts of paper or
cardboard boxes can create an excessively hot
re and should not be burned in this replace.
Always keep the re well back from the doors
and never allow ames to contact the glass.
WARNING: Fireplaces
equipped with glass doors
should be operated only with
doors fully opened or doors fully
closed. Doors, if left partly open,
may draw gas and ame out of
the replace opening creating
risks of both re and smoke.
Cleaning Glass
Clean glass with any commercial glass cleaner
or soap and water. Do not use any abrasive
material to clean glass. Do not clean glass with
any cool water if glass is still hot from the re
and smoke.
Figure 33 - Bi-Fold Glass Doors
Doors Fully Closed
Fireplace Front
Doors
Fully Opened
Fireplace Front
OUTSIDE AIR AND DAMPER
HANDLE OPERATION
The damper handle, which opens and closes
the damper blade, is located in the upper front
face of the replace. Pushing the handle for-
ward and up through the keyway slot will free
damper blade to automatically open. Pushing
the handle forward and down will lock damper
blade closed (see Figure 34).
Figure 34 - Operating Damper Handle
Damper
Weight
To Close
Damper
To Open
Damper
Damper
Weight

www.fmiproducts.com
125701-01C 19
PUREFIRE EMISSION CONTROL SYSTEM
This replace is equipped with a PureFire
Emission Control System. The Catalytic
Hood system reduces particulates emissions
in a wood burning replace to meet the EPA
Wood-Burning Fireplace Program Phase 2
emission level.
The EPA qualifying label, shown on page 20,
will be afxed to the catalyst. Before lighting
the rst re, remove and maintain this label in
a safe place if needed for permits or building
inspection. Prior to beginning installation, con-
tact your local building ofcial to determine the
need to obtain a permit. For proper operation,
catalyst must be replace every 3 to 5 years.
FUELING GUIDELINES
The replace grate must always be secured to
the retaining brackets provided. The position
of the grate must be centered against the back
wall of the rebox.
Burn only dry, seasoned (cured) wood with
less than 20% moisture. Avoid the use of
treated, painted and laminated wood. Never
burn garbage or other foreign materials. Do
not use articial logs, colored newspaper or
petroleum based re starters. Avoid wood with
high salt content. All of these materials may
contain compounds which can shorten the
life of the catalyst. Wet or unseasoned wood
may lower catalytic temperatures and result
in inefcient operation.
The catalyst is designed to function at opti-
mum efciency when the replace is burning
clean, dry, cord wood as replace fuel. A
simple visual inspection of the chimney dur-
ing the wood burning process will determine
catalyst performance.
The fuel load should always be placed on
the back of the grate. Use clean dry wood,
seasoned cord wood is the best choice.
Never burn trash, plastics, gasoline, rubber,
industrial solvents, ammable liquids, naptha,
household garbage, material treated with
petroleum products, leaves, paper products,
cardboard or salt driftwood.
Refer to your FMI PRODUCTS, LLC Home-
owner's Guide included with your replace for
proper re building technique and ash removal
procedures. These fueling guidelines must be
followed in order to achieve maximum emis-
sions performance from the PureFire System.
OPERATION
The proper use of a wood burning replace
equipped with the catalyst will signicantly
reduce the emissions that it produces. Simple
fuel considerations with regard to moisture
content, size, and quality of fuel will help
control the production of wood smoke and
improve the performance of the catalyst and
replace efciency. With proper care, the
catalyst will provide years of fuel savings
and lowered emissions. By following some
simple guidelines, you will ensure maximum
performance and longevity.
The smoke that is usually seen coming out
of a chimney is essentially a combination of
unburned fuel (carbon and hydrogen) and
moisture in the form of water vapor. The cata-
lyst is a technology that provides secondary
combustion for the wood burning process.
MAINTENANCE
The PureFire System is a maintenance free
technology. Do not attempt to remove or clean
the combustor. The direct ame from the re
will clean the combustor. Only a certified
technician should remove the unit. To ensure
proper replace operation, the PureFire Sys-
tem should be replaced every 3 to 5 years
(see Parts on page 22).
NOTE: Chimney smoke may be visible during
the rst 8 to 10 minutes of replace operation
when the re is rst getting started and the
nal 8 to 10 minutes of operation while the re
is dissipating. Under normal operating condi-
tions, you should see little or no smoke coming
out of the chimney. If continuous smoke is
visible, make sure only dry seasoned wood
is being burned. If visible smoke continues,
the combustor has ceased to function or there
is thermal crumbling. Call FMI PRODUCTS,
LLC at 1-866-328-4537 for replacement parts.

www.fmiproducts.com 125701-01C20
PUREFIRE EMISSION CONTROL SYSTEM
Continued
WARRANTY
FMI PRODUCTS, LLC warranty obligations
for the PureFire Emissions Control System
are limited to the terms set forth below.
FMI PRODUCTS, LLC warrants to the
consumer who purchases a new solid fuel
burning replace containing a PureFire Emis-
sions Control System as a new component,
to replace the catalyst at no charge should
it cease to function within three years from
the date of purchase. The PureFire Catalytic
Component is designed to perform efciently
for three years of replace operation. ONLY
recommended fuels should be burned. Fol-
low the fueling directions in manufacturers
operation manual. For warranty purposes,
proof of replace purchases is required. Labor
for removal and/or installation of the catalytic
component is not the responsibility of the
manufacturer.
Neither FMI PRODUCTS, LLC nor the dealer
who sells the PureFire Emissions Control
System is responsible for indirect, incidental,
special, punitive or consequential damages
arising out of the improper use of this product
or the continued use of this product beyond
the required replacement period.
MANUFACTURER: FMI Products, LLC
MODEL NO: GMCAT50 & VGMCAT50
PARTICLE EMISSIONS: 4.4 GRAMS/KG OF WOOD BURNED
FIREPLACE
SMOKE EMISSIONS RANGE
Higher Emissions
Lower Emissions
012.0
THIS MODEL
EPA PHASE 2 EMISSIONS LEVEL
4.4 5.1
Better Worse
U.S. Environmental Protection Agency
Wood-burning Fireplace Program
Phase 2 Qualified models are cleaner and pollute less than those models that
have not met this emissions level. Exposure to smoke has been associated with
respiratory illness and other health problems. Models that have lower smoke
emissions may reduce your risk.
PHASE 2 QUALIFIED
For more information go to www.epa.gov/burnwise
Fireplaces with lower emissions produce less smoke when installed and operated properly.
* EPA has determined, based on testing by an accredited independent laboratory and a certification
of conformity by a nationally recognized certification body, that this model qualifies at the Phase 2
emissions level for U.S. EPA's Voluntary Fireplace Program.
For proper operation, catalyst must be replaced every 3 to 5 years.
125574-03
For more information go to www.epa.gov/burnwise
U.S. Environmental Protection Agency
Wood-burning Fireplace Program
Phase 2 Qualified models are cleaner and pollute less than those models that
have not met this emissions level.Exposure to smoke has been associated with
respiratory illness and other health problems. Models that have lower smoke
emissions may reduce your risk.
MANUFACTURER: FMI Products, LLC
MODEL NAME: GMCAT42 42” Woodburning Fireplace
VGMCAT42 42” Woodburning Fireplace
PARTICLE EMISSIONS: 4.4 GRAMS/KG OF WOOD BURNED
* EPA has determined, based on testing by an accredited independent laboratory and a certification
of conformity by a nation ally recognized certification body, that this model qualifies at the Phase 2
emissions level for U.S. EPA’s Voluntary Fireplace Program.
Better Worse
FIREPLACE
SMOKE EMISSIONS RANGE
Higher Emissions
Lower Emissions
012.0
THIS MODEL
EPA PHASE 2 EMISSIONS LEVEL
4.4 5.1
Better Worse
Fireplaces with lower emissions produce less smoke when installed and operated properly.
125574-08