Comfortflame CTDV36NR-A Quick start guide

For more information, visit www.fmiproducts.com
DIRECT-VENT FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
NATURAL GAS
CTDV36NR-A
WARNING: If the information in this manual is not fol-
lowed 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.
Flame
Flame
TM
Comfort
Comfort
by FMI PRODUCTS, LLC
PFS
®
US

www.fmiproducts.com 111250-01H2
SAFETY INFORMATION
TABLE OF CONTENTS
Safety Information ............................................... 2
Local Codes......................................................... 4
Product Identication........................................... 4
Product Features................................................. 4
Pre-Installation Preparation................................. 5
Location of Termination Cap................................ 7
Venting Installation Instructions ........................... 8
Fireplace Installation.......................................... 18
Operating Fireplace........................................... 26
Inspecting Burners............................................. 29
Cleaning and Maintenance................................ 29
Troubleshooting ................................................ 31
Replacement Parts............................................ 35
Service Hints ..................................................... 35
Technical Service............................................... 35
Specications .................................................... 35
Accessories ....................................................... 36
Illustrated Parts Breakdown and Parts List........ 38
Warranty Information ...........................Back Cover
WARNING: Improper in-
stallation, adjustment, al-
teration, service or main-
tenance can cause injury
or property damage. Refer
to this manual for correct
installation and operation-
al procedures. For assis-
tance or additional infor-
mation consult a qualied
installer, service agency
or the gas supplier.
This appliance may be in-
stalled in an aftermarket,*
permanently located,
manufactured (mobile)
home, where not prohib-
ited by local codes.
This appliance is only for
use with the type of gas
indicated on the rating
plate. This appliance is
not convertible for use
with other gases, unless
a certied kit is used.
* Aftermarket: Completion of sale, not for
purpose of resale, from the manufacturer
State of Massachusetts:
The installation must
be made by a licensed
plumber or gas tter in
the Commonwealth of
Massachusetts.
Installation and service must
be performed by a qualified
installer, service agency or the
gas supplier.
WARNING: This product
contains and/or generates
chemicals known to the State
of California to cause cancer or
birth defects, or other reproduc-
tive harm.
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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111250-01H 3
SAFETY INFORMATION
Continued
This replace must be installed by a qualied
(certied or licensed) service person. It has
a sealed gas combustion chamber that uses
a coaxial pipe (pipe within a pipe and having
the same center) venting system. It brings in
fresh air for combustion through the outer pipe
and combustion gases are exhausted through
the inner pipe. If the glass door assembly and
venting pipe are not properly seated, con-
nected, and sealed, carbon monoxide leakage
(spillage) can occur.
Carbon Monoxide Poisoning: Early signs of
carbon monoxide poisoning resemble the u,
with headaches, dizziness, or nausea. If you
have these signs, the replace may not have
been installed properly. Get fresh air at once!
Have replace inspected and serviced by a
qualied service person. Some people are
more affected by carbon monoxide than oth-
ers. These include pregnant women, people
with heart or lung disease or anemia, those
under the inuence of alcohol, and those at
high altitudes.
Propane/LP and Natural Gas: Propane/LP and
natural gases are odorless. An odor-making
agent is added to the gas. The odor helps you
detect a gas leak. However, the odor added to
the gas can fade. Gas may be present even
though no odor exists.
Make certain you read and understand all
warnings. Keep this manual for reference. It
is your guide to safe and proper operation of
this replace.
WARNING: Any change to
this replace or it’s controls can
be dangerous. Do not modify
this replace under any circum-
stances. Any parts removed for
servicing must be replaced prior
to operating replace.
WARNING: This appliance
is only for use with the type of
gas indicated on the rating plate.
This appliance is not convertible
for use with other gases unless
a certied kit is used.
WARNING: Do not use a blow-
er insert, heat exchanger insert or
other accessory not approved for
use with this replace.
WARNING: Do not allow fans
to blow directly into the replace.
Avoid any drafts that alter burner
ame patterns.
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 on the appliance.
Do not use this replace to cook
food or burn paper or other am-
mable material.
This replace reaches high tem-
peratures. Keep children and
adults away from hot surface to
avoid burns or clothing ignition.
Fireplace will remain hot for a time
after shutdown. Allow surface to
cool before touching.
Carefully supervise young chil-
dren when they are in the room
with replace.
Keep the area around your
replace clear of combustible
materials, gasoline and other
ammable vapor or liquids. Do
not run replace where these are
used or stored.
1. For propane/LP replace, do not place
propane/LP supply tank(s) inside any
structure. Locate propane/LP supply
tank(s) outdoors. To prevent performance
problems, do not use propane/LP fuel tank
of less than 100 lbs. capacity.

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SAFETY INFORMATION
Continued
2. If you smell gas
• shut off gas supply
• 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 sup-
plier's instructions
• if you cannot reach you gas supplier, call
the re department.
3. Never install the replace
• in a recreational vehicle
• in windy or drafty areas where curtains
or other combustible (ammable) objects
can make contact with the fireplace
front
• in high trafc areas
4. Turn appliance off and let cool before
servicing, installing or repairing. Only a
qualied service person should install,
service or repair this replace. Have re-
place inspected annually by a qualied
service person.
5. You must keep control compartments,
burners and circulating air passages
clean. More frequent cleaning may be
needed due to excessive lint and dust
from carpeting, bedding material, etc.
Turn off the gas valve and pilot light before
cleaning replace.
6. Have venting system inspected annu-
ally by a qualified service person. If
needed, have venting system cleaned or
repaired.
7. Do not use any solid fuels (wood, coal,
paper, cardboard, etc.) in this replace.
8. This 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.
9. Do not use replace if any part has been
exposed to or under water. Immediately
call a qualied service person to arrange
for replacement of the unit.
10. Do not operate replace if any log is bro-
ken.
11. Do not operate replace with glass door
removed, cracked or broken.
12. Provide adequate clearances around air
openings.
Figure 1 - Tudor Direct-Vent Fireplace
with Millivolt Ignition
LOCAL CODES
Install and use replace with care. Follow all
local codes. In the absence to local codes,
use the current National Fuel Gas Code ANSI
Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
PRODUCT IDENTIFICATION
PRODUCT FEATURES
These are a few facts that can help you un-
derstand and enjoy your direct-vent replace:
• The venting system may be routed to the
outside of your home in several ways. It
may vent through the roof (vertical) or it
may vent to an outside/exterior wall (hori-
zontal). The vent pipe installation is very
important to allow for proper operation.
You must follow the venting instructions
very carefully for either vertical or horizontal
applications.
• This replace may be installed in any room
of your house provided all local codes
and these installation instructions are fol-
lowed.
Glass Door
Assembly
ON/OFF/
REMOTE
Switch (Optional
Installation)
Upper Louver
Panel
Lower
Louver
Panel
Flue Collar
Nailing
Flange
Control
Valve
Glowing
Embers
Blower Switch
(Optional
Installation)
Grate
Assembly
Lava Rock
Log Set
Piezo
Ignitor

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111250-01H 5
Figure 2 - Common Fireplace Locations
Flush with a wall
Through exterior wall
enclosed in a chase
Corner
installation
• This replace requires a wall switch, hand-
held remote or wall thermostat (millivolt) for
operation (see Accessories, page 36).
• This replace does not require electricity
to operate.
• Only the blower requires electricity if in-
stalled and if you plan to install the blower
at a later date, do not forget to wire the
outlet at the bottom of the replace when
framing.
• A piezo ignitor and ceramic electrode cre-
ate spark to ignite the pilot light. It does not
require any matches, batteries or any other
sources of ignition to light the pilot.
• Each time you turn on your replace, you
may notice some amount of condensation
on the inside of the replace glass. This
is normal and will disappear after 10-20
minutes of operation.
• Your direct-vent gas fireplace system
(replace and venting) is a balanced and
sealed gas operating unit. It requires ap-
proximately 10-20 minutes of operating
time before the ame pattern stabilizes.
PRE-INSTALLATION PREPARATION
LOCATION AND SPACE REQUIREMENTS
Determine the safest and most efcient loca-
tion for your FMI PRODUCTS, LLC direct-vent
replace. Make sure that rafters and wall
studs are not in the way of the venting system.
Choose a location where the heat output is
not affected by drafts, air conditioning ducts,
windows or doors. Figure 2 shows some com-
mon locations. Be aware of all restrictions and
precautions before deciding the exact location
for your replace and termination cap.
When deciding the location of your replace,
follow these rules:
• Do not connect this replace venting to a
chimney ue serving a separate solid-fuel
burning replace or appliance.
• Due to high temperatures, do not locate this
replace in high trafc areas, windy or drafty
areas or near furniture or draperies.
• Proper clearances must be maintained.
• If your replace is to be installed directly on
carpeting, vinyl tile or any combustible ma-
terial other than wood, it must be installed
on a metal or wood panel extending the full
width and depth of the replace. See Figure
3.
• Your replace is designed to be used in
zero clearance installations. Wall or framing
material can be placed directly against any
exterior surface on the back, sides or top of
your replace, except where standoff spac-
ers are integrally attached. If standoff spac-
ers are attached to your replace, these
spacers can be placed directly against wall
or framing material. See framing details on
page 6.
• If you plan on installing a television or enter-
tainment center recessed above your re-
place, it is recommended that you maintain a
minimum 18" above top of louver opening.
• When locating termination cap, it is impor-
tant to observe the minimum clearances
shown in Figure 7, page 7.
• If recessing into a wall, you can avoid extra
framing by positioning your replace against
an already existing framing member.
• Do not recess termination cap into a wall
or siding.
• You may paint the termination cap with 450º
F (232º C) heat-resistant paint to coordinate
with the exterior nish.
• There must not be any obstruction such
as bushes, garden sheds, fences, decks
or utility buildings within 24" from the front
of the termination cap.
• Do not locate termination cap where exces-
sive snow or ice build up may occur. Be sure
to clear vent termination area after snow falls
to prevent accidental blockage of venting
system. When using snow blowers, do not
direct snow towards vent termination area.
Figure 3 - Fireplace Bottom Dimensions
D
RW
FW
41"
29"
21
1
/
8
"
PRODUCT FEATURES
Continued

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PRE-INSTALLATION
PREPARATION
Continued
Figure 4 - Framing Clearances for
Installation Against an Exterior Wall
Figure 5 - Framing Clearances for Corner
Installation
C
B
A
DE
FG
Top of Louver
Opening
3
2
1
4
5
6
7
Wall
Ref.
Mantel
Depth Ref.
Mantel from Top of
Louver Opening
1 14" A 16"
2 12" B 14"
3 10" C 12"
4 8" D 10"
5 6" E 8"
6 4" F 6"
7 2" G 4"
Figure 6 - Clearances for Combustible
Mantels
CLEARANCES
Minimum clearances to combustibles for the
replace are as follows:
Back and sides 0"
Perpendicular walls 6"
Floor 0"
Ceiling to louver opening 42"
Front 36"
Top of Standoffs 0"
Vent (See venting
instructions for specic
venting clearances.)
Combustible material with a maximum thick-
ness of 5/8" may be ush with the top front of
replace.
NOTICE: This replace is in-
tended for use as supplemental
heat. Use this replace along with
your primary heating system. Do
not install this replace as your
primary heat source. If you have a
central heating system, you may
run system’s circulating blower
while using replace. This will
help circulate the heat through-
out the house. In the event of a
power outage, you can use this
replace as a heat source.
FRAMING AND FINISHING
Figure 4 shows typical framing of this replace.
Figure 5 shows framing for corner installation.
All minimum clearances must be met.
For available accessories for this replace,
see Accessories on page 36. If you are using
a separate combustible mantel piece, refer to
Figure 6 for proper installation height. You can
install noncombustible mantels at any height
above the replace.
Note: Noncombustible mantels may discolor!
361/8"
411/4"
231/2"
A
B
E
F
G
H
DC
Nailing Tabs
353/4"
15" 495/8"
103/8"
133/4"41"
411/4"
681/2"
Nailing
Tabs

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111250-01H 7
Figure 7 - Minimum Clearances for Termination Cap
LOCATION OF TERMINATION CAP
Fixed
Closed OpenableFixed
Closed
V
V
V
V
VV
V
V
X
X
VX
G
G
J
F
B
B
K
N
H
I
A
N
E
L
D
B
M
A
C
B
V
V
A
G
G
B
TERMINATION CAP AIR SUPPLY INLET GAS METERRESTRICTED AREA
(TERMINATION PROHIBITED)
A = clearance above grade, veranda, porch, deck, or
balcony [*12" (30.5 cm) minimum]
B = clearance to window or door that may be opened
[12" (30.5 cm) minimum]
C = clearance to permanently closed window
[minimum 12" (30.5 cm) recommended to prevent
condensation on window]
D = vertical clearance to ventilated soffit located above the
terminal within a horizontal distance of 24" (61 cm) from
the center-line of the terminal [18" (45.7 cm) minimum]
E = clearance to unventilated soffit [12" (30.5 cm) minimum]
F = clearance to outside corner (see below)
G = clearance to inside corner (see below)
H = *not to be installed above a meter/regulator assembly
within 36" (91.4 cm) horizontally from the center line
of the regulator
I = clearance to service regulator vent outlet [*72" (182.9 cm)
minimum]
J = clearance to non-mechanical air supply inlet to building
or the combustion air inlet to any other fireplace
[*12" (30.5 cm) minimum]
K = clearance to a mechanical air supply inlet [*72" (182.9 cm)
minimum]
L = † clearance above paved side-walk or a paved driveway
located on public property [*84" (213.3 cm) minimum]
M = clearance under veranda, porch, deck
[*12" (30.5 cm) minimum ‡]
N = clearance above a roof shall extend a minimum of
24" (61 cm) above the highest point when it passes
through the roof surface and any other obstruction within
a horizontal distance of 18" (45.7 cm)
† vent shall not terminate directly above a side-walk or paved driveway which is located between two
single family dwellings and serves both dwellings*
‡ only permitted if veranda, porch, deck or balconey is fully open on a minimum of 2 sides beneath the floor*
* as specified in CAN/CSA B149 (.1 or .2) Installation Codes (1991) for Canada and U.S.A.
Note: Local codes or regulations may require different clearances
A = 6" (15.2 cm)
Inside Corner
V
B
E
V
B = 6" (15.2 cm)
C = Maximum depth of 48" (121.9 cm)
for recessed location
D = Minimum width for back wall of
recessed location -
Combustible - 38" (965 mm)
Noncombustible - 24" (61 cm)
E = Clearance from corner in
recessed location-
Combustible - 6" (15.2 cm)
Noncombustible - 2" (5.1 cm)
Outside Corner Recessed Location
G
H
G = 12" (30.5 cm) minimum clearance
Balcony with No Side Wall
V
J
Combustible &
Noncombustible
H = 24" (61 cm)
J = 20" (50.8 cm)
Balcony with Perpendicular Side Wall
C
D
C
Termination Clearances for Buildings with Combustible and Noncombustible Exteriors
Openable

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VENTING INSTALLATION
INSTRUCTIONS
NOTICE: Read these instruc-
tions completely before at-
tempting installation.
These models are tested and approved for
use with FMI PRODUCTS, LLC (direct-vent)
pipe components and terminations as well as
Simpson-Duravent direct-vent pipe compo-
nents and terminations.
The venting system must terminate on the
outside of the structure and can not be at-
tached to a chimney or ue system serving a
separate solid fuel or gas burning appliance.
A direct-vent appliance must have its own
venting system. DO NOT common vent this
appliance.
These models are approved to be vented
either horizontally through an outside wall or
vertically through a roof or chase enclosure
using the following guidelines:
• When venting system terminates horizon-
tally on an outside wall, you may install
a standoff if the termination cap is to be
installed directly on a combustible nish
such as vinyl, wood, stucco, etc.
• Never run the vent downward as this may
cause excessive temperatures which
could cause a re.
• Vent pipe air space clearances to com-
bustibles are 1" on all sides except on the
horizontal sections, which requires 2" clear-
ance from the top of the pipe. Where the
termination cap penetrates a combustible
wall, 1" air space clearance is required.
• Snorkel terminations are required when
minimum clearance to grade cannot be
met (see Figure 16 on page 12).
• Have replace and selected vent compo-
nents on hand to help determine the exact
measurements when elbowing or offsetting.
Always use wall restops when penetrating
walls and restops when penetrating ceil-
ings or attic spaces.
• If using a venting conguration of only
horizontal venting with no vertical run, a
1/4" rise for every 12" of run toward the
termination is required.
WARNING: Read all instruc-
tions completely and thoroughly
before attempting installation.
Failure to do so could result in
serious injury, property damage
or loss of life.
NOTICE:Failure to follow these in-
structions will void the warranty.
NOTICE: Do not seal termination
cap to vent pipe. Cap must be
removable for vent inspection
and maintenance.
INSTALLATION PRECAUTIONS
• Wear gloves and safety glasses for protection
• Use extreme caution when using ladders
or when on roof tops
• Be aware of electrical wiring locations in
walls and ceilings
The following actions will void the warranty
on your venting system:
• Installation of any damaged venting component
• Unauthorized modication of the venting sys-
tem (Do not cut or alter vent components)
• Installation of any component part not manufac-
tured or approved by FMI PRODUCTS, LLC
• Installation other than as instructed by
these instructions
WARNING: This gas replace
and vent assembly must be vented
directly to the outside. The venting
system must NEVER be attached
to a chimney serving a separate
solid fuel burning appliance. Each
direct-vent gas appliance must
use a separate vent system. Do
not use common vent systems.
WARNING: Vent pipe air
space clearances to combustibles
are 1" on all sides except on the
horizontal sections, which require
2" clearances from the top of the
pipe. Where the termination cap
penetrates a combustible wall, 1"
air space clearance is required.

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111250-01H 9
INSTALLATION PLANNING
There are two basic types of direct-vent
installation:
• Horizontal Termination
• Vertical Termination
Horizontal Termination Installation
IMPORTANT: Horizontal square terminations
require only inner portion of wall restop.
Horizontal installations using round termina-
tion require exterior portion of wall restop
available only in vent kit HTK (see Figure
14, page 11).
1. Set the replace in its desired location and
determine the route your horizontal venting
will take. Do not secure the replace until
all venting has been installed. Some instal-
lations require sliding the replace in and
out of position to make nal venting con-
nections. Figures 14 through 18 on pages
11 through 13 show different congurations
for venting with horizontal termination that
will help you decide which application best
suits your installation. Check to see if wall
studs or roof rafters are in the path of your
desired venting route. If they are, you may
want to adjust the location of the replace.
2. Direct vent pipe sections and components
are designed with special twist-lock con-
nections.
Twist-Lock Procedure: The female ends of
the pipes have locking lugs (indentations).
These lugs will slide straight into match-
ing slots on the male ends of adjacent
pipes. Push pipe sections together and
twist one section clockwise approximately
one-quarter turn until the sections are fully
locked (see Figure 8). Note: Horizontal runs
of vent must be supported every three feet.
Use wall straps for this purpose.
3. Use a 45° elbow to connect venting sys-
tem to replace ue collar. The elbow is
designed to be twist-locked onto the ue
collar as described in step 2. IMPORTANT:
Do not attempt to alter the conguration
of the elbow by cutting, twisting, bending,
etc.
4. Assemble the desired combination of pipe
and elbows to the replace ue collar. If
there are long portions of venting run, pre-
assembled pipe sections may be installed
VENTING INSTALLATION
INSTRUCTIONS
Continued
Figure 8 - Vent Pipe Connections
Female
Locking Lugs
Male
Slots
(Framing
Detail)
10"
10" Inside Framing
10"
7
3
/
4
"
Vent Opening
Combustible Wall
Vent Opening
Noncombustible Wall
Figure 9 - Vent Opening Requirements
Center of
Hole
as subassemblies for convenience.
5. Carefully determine the location where
the vent pipe assembly will penetrate
the outside wall. The center of the hole
should line up with the center-line of the
horizontal vent pipe. Mark the wall for a
10" x 10" square hole. Cut and frame the
square hole in the exterior wall where the
vent will be terminated. If the wall being
penetrated is constructed of noncombus-
tible material, such as masonry block or
concrete, a 7 3/4" hole with zero clearance
is acceptable (see Figure 9).

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VENTING INSTALLATION
INSTRUCTIONS
Continued
WARNING: Do not recess
vent termination into any wall.
This will cause a re hazard.
6. Noncombustible Exterior Wall: Position the
horizontal vent cap in the center of the 7
3/4" round hole and attach to the exterior
wall with four wood screws provided.
Before attaching the vent cap to exterior
wall, run a bead of non-hardening mastic
(pliable sealant) around the outside edges
to make a seal between it and the outside
wall. Note: The four wood screws provided
should be replaced with appropriate fas-
teners for stucco, brick, concrete or other
types of sidings.
Combustible Exterior Wall: For vinyl siding,
stucco or wood exteriors, a siding standoff
may be installed between the vent cap and
exterior wall. The siding standoff prevents
excessive heat from damaging the siding
materials. Siding material must be cut to
accommodate standoff. Bolt the vent cap to
the standoff. Apply non-hardening mastic
around outside edge of standoff. Position
the standoff/cap assembly in the center of
the 10" square hole and attach to exterior
wall with wood screws provided (see Fig-
ure 11). The siding standoff must sit ush
against the exterior fascia material.
7. Combustible Exterior Wall Only: Slide the
wall restop over the vent pipe before
connecting horizontal run to vent cap (see
Figure 12).
8. Carefully move replace, with vent as-
sembly attached, toward wall and insert
vent pipe into horizontal termination. The
pipe overlap should be a minimum of 11/4"
(see Figure 13, page 11).
9. Combustible Exterior Wall Only: Slide wall
restop against interior wall surface and
attach with screws provided. See Figure
13, page 11, for horizontal termination
details.
10. Place replace into position and shim with
noncombustible material if needed. Nail or
screw side anges to framing to secure
unit in place. IMPORTANT: Make sure re-
place is level before securing. If replace
is not level it will not work properly.
Figure 10 - Installing Horizontal Vent Cap
(Noncombustible Exterior)
Wood Screw
Vent Cap
Figure 11 - Installing Siding Standoff
(Combustible Exterior Wall)
Cut Siding Away to
Fit Standoff
Wood
Screw
Screws
Standoff
Vent
Cap
Apply Mastic
to All Four Sides
Vent Cap
(Horizontal
Termination)
Interior Wall
Surface
Wall
Firestop
Horizontal
Vent Pipe
Figure 12 - Connecting Vent Cap with
Horizontal Vent Pipe
Screw
Apply Mastic to
All Four Sides

www.fmiproducts.com
111250-01H 11
VENTING INSTALLATION INSTRUCTIONS
Continued
Figure 13 - Typical Horizontal
Termination Cap Mounting with
Additional Siding Standoff Installed
Siding Standoff
Screws
High Wind
Termination
Apply
Mastic to
Outside
Edge of
Standoff
Exterior Wall with Vinyl Siding
10" x 10" Framed
Opening
Maintain 1"
Minimum Air
Space Around
Outer Pipe When
Penetrating a Wall
Minimum Pipe
Overlap 11/4"
Wall
Firestop
Direct-Vent
Pipe
Horizontal Termination Congurations
Figures 14 through 18 show different congura-
tions and alternatives for venting with horizontal
termination. Each gure includes a chart with
critical minimum and maximum dimensions
which MUST be met. IMPORTANT: If using
a venting configuration of only horizontal
venting with no vertical run, a 1/4" rise for
every 12" of run toward the termination is
required.
NOTICE: Do not seal termination
cap to vent pipe. Cap must be
removable for vent inspection
and maintenance.
WARNING: Never run vent
downward as this may cause
excessive temperatures which
could cause a re. Operation of
improperly installed and main-
tained venting system could
result in serious injury, property
damage or loss of life.
GROUND FLOOR INSTALLATION
Recommended Applications:
• Installation using cabinet surrounds
• Through the wall using round or square
termination (up to 12" horizontal pipe)
• NOT FOR CORNER INSTALLATION
Figure 14 - Horizontal Termination
Conguration for Square and Round
Terminations
* If installing this replace at altitudes of
4000 feet and above, it is recommended
that an additional vertical height of 6" be
added to the vent system.
Horizontal
High Wind
Square
Termination
Wall Firestop
45° Elbow
Adjustable
Pipe 12" Max.
Square Termination
Vertical (V) Horizontal (H)
32" min. 17" Max.
45° Elbow
Wall
Firestop
Slide Ring
Over Elbow
to Complete
Connection
Exterior Portion
of Wall Firestop
(Round
Termination
Only)
Round Termination
(Kit HTK Shown)
Round
Termination
Cap

www.fmiproducts.com 111250-01H12
CORNER AND ALTERNATE INSTALLATION
Recommended Applications:
• Corner ground oor installation
• Ground oor installation where pipe vents hori-
zontally through wall (over 12" horizontal pipe)
• Basement installation where one foot clear-
ance from ground to termination is possible
VENTING INSTALLATION INSTRUCTIONS
Continued
Figure 15 - Horizontal Termination Conguration for Corner Installation Using One
90° Elbow
Square
Termination
Wall
Firestop
Not to Exceed (H) Limits
As Required
for (V), See
Chart for
Pipe Section
Required
45° Elbow
90° Elbow
90° Elbow
Square
Termination
Wall
Firestop
45° Elbow
12" Min.
Required
Vertical (V) Vertical Pipe Horizontal (H)
*43 1/4" min. None 30" max.
54 1/4" min. 1 ft. 48" max.
66 1/4" min. 2 ft. 60" max.
78 1/4" min. 3 ft. 84" max.
90 1/4" min. 4 ft. 20' max.
* Ground Floor Corner Venting
Not to Exceed
(H) Limits
SNORKEL TERMINATION INSTALLATION
Recommended Applications:
• Installations requiring a vertical rise on building exterior
• Any installation using snorkel termination to achieve one foot above ground
Snorkel terminations are available for installations requiring a vertical rise on the exterior of
the building. If installing snorkel termination below grade, you must provide proper drainage
to prevent water from entering snorkel termination (see Figure 16). Do not back ll around
snorkel termination.
Snorkel Termination
12"
Min.
Snorkel
Termination
Wall
Firestop
90° Elbow
45° Elbow
Figure 16 - Snorkel Termination Congurations for Below Ground Installation
Snorkel Termination
Adequate
Drainage
12" Min.
12" Min.

www.fmiproducts.com
111250-01H 13
VENTING INSTALLATION INSTRUCTIONS
Continued
Venting with Two 90° Elbows
Vertical (V) Horizontal (H1)
Horizontal (H1) +
Horizontal (H2)
5' min. 2' max. 6' max.
6' min. 4' max. 12' max.
7' min. 6' max. 18' max.
8' min. 8' max. 20' max.
20' max. 8' max. 20' max.
Figure 17 - Horizontal Termination Conguration for Venting Using Two 90° Elbows
45° Elbow
HORIZONTAL SYSTEM INSTALLATION
USING TWO 90° ELBOWS
The following congurations show the minimum
vertical rise requirements for a horizontal sys-
tem using two 90° elbows.
Venting with Two 90° Elbows
Vertical (V) Horizontal (H1) +
Horizontal (H2)
5' min. 6' max.
6' min. 12' max.
7' min. 18' max.
8' min. 20' max.
20' max. 20' max.
Figure 18 - Horizontal Termination Conguration for Venting Using Two 90° Elbows
with Termination at 90° with Fireplace
45° Elbow

www.fmiproducts.com 111250-01H14
INSTALLATION FOR VERTICAL
TERMINATION
Note: Vertical restrictor must be installed in
all vertical installations.
1. Determine the route your vertical venting
will take. If ceiling joists, roof rafters or
other framing will obstruct the venting
system, consider an offset (see Figure 19)
to avoid cutting load bearing members.
Note: Pay special attention to these instal-
lation instructions for required clearances
(air space) to combustibles when passing
through ceilings, walls, roofs, enclosures,
attic rafters, etc. Do not pack air spaces
with insulation. Also note maximum verti-
cal rise of the venting system and any
maximum horizontal offset limitations.
2. Set the replace in desired location. Drop
a plumb line down from the ceiling to the
position of the replace exit ue. Mark the
center point where the vent will penetrate
the ceiling. Drill a small locating hole at
this point.
Drop a plumb line from the inside of the
roof to the locating hole in the ceiling.
Mark the center point where the vent will
penetrate the roof. Drill a small locating
hole at this point.
Flat Ceiling Installation
1. Cut a 10" square hole in the ceiling using
the locating hole as a center point. The
opening should be framed to 10" x 10"
inside dimensions, as shown in Figure
9 on page 9 using framing lumber the
same size as the ceiling joists. If the area
above the ceiling is an insulated ceiling or
attic space, nail restop from the top side.
This prevents loose insulation from falling
into the required clearance space. If the
area above the ceiling is a living space,
install restop below the framed hole. The
restop should be installed with no less
than three nails per side (see Figure 20).
2. Assemble the desired lengths of pipe
and elbows necessary to reach from the
replace ue up through the restop. Be
sure all pipe and elbow connections are
fully twist-locked (see Figure 8, page 9).
3. Cut a hole in the roof using the locating
hole as a center point. (Cover any exposed
open vent pipes before cutting hole in roof.)
The 10" x 10" hole must be measured on
the horizontal; actual length may be larger
depending on the pitch of the roof. There
must be a 1" clearance from the vent pipe to
combustible materials. Frame the opening
as shown in Figure 9, page 9.
VENTING INSTALLATION
INSTRUCTIONS
Continued
Figure 19 - Offset with Wall Strap and 45°
Elbows
45° Elbow
Wall Strap
Roof Flashing
Ceiling Firestop
Figure 20 - Installing Firestop
If area above is a living space, install
restop below framed hole.
If area above is an attic or insulated area,
install restop above framed hole.

www.fmiproducts.com
111250-01H 15
4. Connect a section of pipe and extend up
through the hole.
Note: If an offset is needed to avoid
obstructions, you must support the vent
pipe every 3 feet. Use wall straps for this
purpose (see Figure 19, page 14). When-
ever possible, use 45° elbows instead of
90° elbows. The 45° elbow offers less
restriction to the ow of the ue gases
and intake air.
5. Place the ashing over the pipe section(s)
extending through the roof. Secure the
base of the ashing to the roof and fram-
ing with roong nails. Be sure roong
material overlaps the top edge of the
ashing as shown in Figure 19, page 14.
There must be a 1" clearance from the
vent pipe to combustible materials.
6. Continue to add pipe sections until the
height of the vent cap meets the minimum
building code requirements described in
Figure 7 on page 7. Note: You must in-
crease vent height for steep roof pitches.
Nearby trees, adjoining rooines, steep
pitched roofs and other similar factors
may cause poor draft or down-drafting
in high winds. Increasing the vent height
may solve this problem.
7. Twist-lock the vent cap onto the last sec-
tion of vent pipe.
Note: If the vent pipe passes through any oc-
cupied areas above the rst oor, including
storage spaces and closets, you must enclose
pipe. You may frame and sheetrock the en-
closure with standard construction material.
Make sure and meet the minimum allowable
clearances to combustibles. Do not ll any of
the required air spaces with insulation.
VENTING INSTALLATION
INSTRUCTIONS
Continued
Vertical Termination Congurations
Figures 21 through 24 show four different
congurations for vertical termination.
Venting with Two 90° Elbows
Vertical (V)
Horizontal (H1) +
Horizontal (H2)
5' min. 2' max.
6' min. 4' max.
7' min. 6' max.
8' min. 8' max.
20' max. 8' max.
Figure 21 - Vertical Venting
Conguration Using Two 90° Elbows
with Two Horizontal Runs (Vertical
Round High Wind Termination Shown)
Note: Install restrictor
into inner collar of
replace as shown.
45° Elbow
Venting with One 90° Elbow
Vertical (V) Horizontal (H)
5' min. 2' max.
6' min. 4' max.
7' min. 6' max.
8' min. 8' max.
20' max. 8' max.
Figure 22 - Vertical Venting
Conguration Using One 90° Elbow
(Vertical Round High Wind Termination
Shown)
45° Elbow
Note: Install restrictor into
inner collar of replace as
shown.

www.fmiproducts.com 111250-01H16
VENTING INSTALLATION
INSTRUCTIONS
Continued
Note: Install
restrictor into
inner collar of
replace as
shown.
Venting with Two 90° Elbows
Vertical (V1) Horizontal (H)
5' min. 6' max.
6' min. 12' max.
7' min. 18' max.
8' min. 20' max.
Note: Vertical (V1) + Vertical (V2) = 40' max.
Figure 23 - Vertical Venting
Conguration Using Two 90° Elbows
(Vertical Round High Wind Termination
Shown)
45° Elbow
Vertical Venting
V = 40' max.
Figure 24 - Vertical Venting
Conguration With No Horizontal Run
(Vertical Round High Wind Termination
Shown)
Note: Install
restrictor into
inner collar of
replace as
shown.
45° Elbow
Your FMI PRODUCTS, LLC direct-vent
replace has been tested and approved for
elevations from 0-2,000 feet.
When installing this replace at an elevation
above 2,000 feet, you may need to decrease
the input rating by changing the existing
burner orice to a smaller size. Reduce input
4% for each 1,000 feet above sea level. Check
with your local gas company for proper orice
size identication.
HIGH ALTITUDE INSTALLATION
Consult your local gas company to help deter-
mine the proper orice for your location.
For assistance with any high altitude installa-
tion, contact FMI PRODUCTS, LLC’s Custom-
er Service Department at 1-866-328-4537.

www.fmiproducts.com
111250-01H 17
PARTS LIST FOR VENTING KITS
AND COMPONENTS
FMI PRODUCTS, LLC Pipe & Vent Kits
Number Description
P47-6 6" Section Coaxial Pipe,
Galvanized
P47-12 12" Section Coaxial Pipe,
Galvanized
P47-24 24" Section Coaxial Pipe,
Galvanized
P47-36 36" Section Coaxial Pipe,
Galvanized
P47-48 48" Section Coaxial Pipe,
Galvanized
PA47-712 Adjustable 7"-12" Section
Coaxial Pipe, Galvanized
VKG-47 Ground Floor Vent Kit, Galvanized
(Includes: 45° Elbow, 7"-12"
Adjustable Pipe, Wall Firestop,
Horizontal Square Termination,
16 Screws)
VKB-47 Basement Vent Kit, Galvanized
(Includes: 45° Elbow, 7"-12"
Adjustable Pipe, Wall Firestop,
Horizontal Square Termination,
4' Pipe, 90° Elbow, 20 Screws)
VKS-47 Snorkel Vent Kit, Galvanized
(Includes: 45° Elbow, 7"-12"
Adjustable Pipe, Wall Firestop,
36" Snorkel Termination, 4' Pipe,
1' Pipe, 90° Elbow, 26 Screws)
VKR-47 Roof Vent Kit, Galvanized
(Includes: 45° Elbow, 7"-12"
Adjustable Pipe, Flue Restrictor,
Vertical High Wind Termination,
2' Pipe, 4' Pipe, Wall Firestop,
Storm Collar, Roof Flashing
[0/12 - 6/12], 26 Screws)
VKC-47 Corner Vent Kit, Galvanized
(Includes 45° Elbow, 7"-12"
Adjustable Pipe, Wall Firestop,
Horizontal Termination, 6" Pipe,
90° Elbow, 18 Screws)
VENTING INSTALLATION
INSTRUCTIONS
Continued
Number Description
HTK Horizontal Round Termination Kit
(Includes: Round Termination,
Wall Firestop and 45° Elbow)
HTKS-47 Horizontal Square Termination Kit
(Includes: Square Termination,
Wall Firestop, 45° Elbow)
FMI PRODUCTS, LLC Elbows
Number Description
E47-45 45° Elbow, Galvanized
E47-90 90° Elbow, Galvanized
FMI PRODUCTS, LLC Terminations
Number Description
HT-47 Horizontal Round Termination,
Galvanized
HTS-47 Horizontal Square Termination,
Galvanized
VT-47 Vertical Round Termination,
Galvanized
ST-47-14 14" Snorkel Termination,
Galvanized
ST-47-36 36" Snorkel Termination,
Galvanized
FMI PRODUCTS, LLC Venting
Accessories
Number Description
SC-47 Storm Collar, Galvanized
WF-47 Wall Firestop, Galvanized
RF-47-6 Roof Flashing - 0 to 6/12 Pitch,
Galvanized
RF-47-12 Roof Flashing - 6/12 to 12/12 Pitch,
Galvanized
VR-47 Vertical Restrictor, Galvanized
S-47 Combustible Siding Standoff,
Galvanized
WS-47 Wall Strap
FP-47 Firestop Plate

www.fmiproducts.com 111250-01H18
FIREPLACE INSTALLATION
CHECK GAS TYPE
Use proper gas type for replace unit you are
installing. If your gas supply is not correct, do
not install replace. See retailer where you
purchased the replace for proper replace
according to your gas type or to purchase
gas conversion kit (see Accessories, page
36). A conversion kit is supplied with the
CTDV36NR-A.
INSTALLING OPTIONAL BLOWER
ACCESSORIES
NOTICE: If installing blower in
an existing replace with gas
connections, shut off gas sup-
ply and disconnect heater from
gas supply. Contact a qualied
service person to do this.
WARNING: If there is a duplex
electrical outlet installed in the
right side of the bottom of the
replace base area, be sure that
the electrical power to the outlet is
turned off before proceeding with
blower installation. Failure to do
this may result in serious injury.
Model BK Installation
Follow all instructions provided in blower
accessory kit.
1. Attach the power cord to blower motor by
rmly pushing two female terminals at end
of power cord onto two spade terminals
on blower motor (see Figure 25).
2. Attach green ground wire from power cord
to blower housing using screw provided
(see Figure 25). Tighten screws securely.
3. Place blower against lower rear wall of
rebox outer wrapper with exhaust port
directed upward. The blower will t inside
back opening and be held in position against
back wall by magnets (see Figure 25).
4. Be certain that all wire terminals are securely
attached to terminals on blower motor and
screw retaining green ground wire is tight.
5. Mount speed control box to switch bracket
by placing plastic control shaft forward
through opening in switch bracket (see
Figure 26).
6. While supporting speed control, secure
control shaft with lock nut by pushing and
turning lock nut with pliers clockwise until
it is tight against front panel. Place control
knob provided on shaft.
7. Turn on power to duplex outlet if previ-
ously turned off per the warning above.
8. Plug in blower power cord.
a. If your rebox is installed as a free-
standing unit with an accessory man-
tel, determine whether power cord will
exit left side or right side of rebox.
Route power cord through exit hole
and plug power cord into a wall recep-
tacle near rebox.
b. If your rebox installation is recessed
and/or pre-wired, plug power cord into
duplex outlet provided. Refer to your
rebox owner’s manual for instructions
on wiring duplex outlet.
CAUTION: Never touch the
blower wheel while in operation.
Figure 25 - Blower Model BK
Green
Ground Wire Screw
Spade
Terminals Magnetic
Strips
Exhaust
Port
Side View
Lower Firebox
Cavity
Blower
Location
Figure 26 - Attaching Speed Control to Firebox
Switch
Bracket
Locknut
Control
Shaft
Control
Knob
Speed
Control
Blower
Plug-In
Duplex Outlet
(Located under-
neath rebox oor
against lower right
outside wall)

www.fmiproducts.com
111250-01H 19
FIREPLACE INSTALLATION
Continued
Figure 27 - Location of Wiring Diagram
Decal (Model May Vary from Illustration)
Wiring Diagram
Decal 12" in Front
of Burner
9. Check to make sure power cord is com-
pletely clear of blower wheel and there are
no other foreign objects in blower wheel.
Turn blower on and check for operation.
Turn blower off by turning knob fully coun-
terclockwise before continuing.
10. Peel off backing paper and stick supplied
wiring diagram decal on rebox bottom
approximately 12" in front of blower (see
Figure 27).
Model BKT Installation
Note: When installing BKT thermostatically-
controlled blower, you must first secure
thermal switch bracket to blower if it has not
already been factory installed.
1. Place green ground wire with ring terminal
between bottom hole on thermal switch
bracket and top ear hole on blower assem-
bly. Insert phillips screw into all three pieces
and tighten securely (see Figure 28).
2. Connect wire harness and power cord ter-
minals. Connect blue jumper wire to blower
motor terminal and right side terminal of
thermal switch. Connect black wire to left
side of thermal switch and white wire to
other remaining blower motor terminal.
Note: Power cord outer insulation sleeve may
have to be stripped slightly to allow enough wire
length to reach and make all connections. DO
NOT trim excessive length away. Just enable
enough to make all connections securely.
3. Place blower against lower rear wall of rebox
outer wrapper with exhaust port directed
upward and thermodisc positioned up near
replace bottom. Thermodisc must be oriented
near replace bottom as shown in Figure 28
in order to sense temperature and prop-
erly operate. Blower will be held in position
against back wall by magnets incorporated
onto blower housing (see Figure 28).
4. Be certain that all wire terminals are securely
attached to terminals on blower motor and
thermal switch, and that screw for thermodisc
bracket and green ground wire is tight.
5. Mount speed control box against mounting
plate provided in lower replace cavity by
placing plastic control shaft forward through
round hole (see Figure 26, page 18).
6. While supporting speed control, secure control
shaft with lock nut by pushing and turning lock
nut with pliers clockwise until it is tight against
mounting plate. Place control knob provided
on shaft (see Figure 26, page 18).
7. Check to make sure power cord is com-
pletely clear of blower wheel and that no
other foreign objects are in blower wheel.
Also double check all wire leads and make
sure wire routing is not pinched or in a
precarious position. Correct accordingly.
8. Turn on power to duplex outlet if previously
turned off per warning in column 1, page 18.
9. Plug in blower power cord to duplex outlet.
10. Blower will only run when speed control
knob is in ON position and thermal switch
senses temperature after replace begins
to heat up. Blower speed can be adjusted
by rotating control knob. To turn off, turn
knob fully counterclockwise until it clicks off.
If blower is ON and has been running with
replace operating, blower will continue to
run for a short time after replace has been
turned off. As thermal switch cools down,
blower shuts down automatically.
Figure 28 - Blower Model BKT
Black
Wire
Phillips
Screw
Blue Wire
Ring
Terminal on
Green Wire
White Wire
Thermal
Switch
Thermal
Switch
Bracket
Power Cord
Air Flow
Direction
Magnetic
Strips
Side View Firebox Bottom
Route BKT Blower
Through This Area
Thermodisc
Air Flow
Direction Magnets
Blower

www.fmiproducts.com 111250-01H20
11. Peel off backing paper and stick supplied
wiring diagram decal on rebox bottom
approximately 12" in front of blower (see
Figure 27, page 19).
Blower Wiring Diagram
CAUTION: Label all wires
prior to disconnection when
servicing controls. Wiring errors
can cause improper and dan-
gerous operation. Verify proper
operation after servicing.
FIREPLACE
INSTALLATION
Continued
Figure 29 - Blower Wiring Diagram for
Thermostat-Controlled Models
Blue
Variable
Fan Switch Fan Switch
(N.O.)
Green
White
On
110/115
V.A.C.
Blower
Motor
Black
Off 1
2Black
INSTALLING GAS PIPING TO
FIREPLACE LOCATION
WARNING: A qualified
service person must connect
replace to gas supply. Follow
all local codes.
CAUTION: For propane/LP
units, never connect fireplace
directly to the propane/LP supply.
This heater requires an external
regulator (not supplied). Install
the external regulator between the
replace and propane/LP supply.
WARNING: For natural
gas, never connect heater to
private (non-utility) gas wells.
This gas is commonly known
as wellhead gas.
Figure 30 - External Regulator with Vent
Pointing Down (Propane/LP Only)
Installation Items Needed
Before installing replace, make sure you have
the items listed below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
• approved exible gas line with gas connec-
tor (if allowed by local codes)
* A equipment shutoff valve with 1/8" NPT
tap is an acceptable alternative to test gauge
connection. Purchase the equipment shutoff
valve from your retailer.
For propane/LP connection only, the installer
must supply an external regulator. The ex-
ternal regulator will reduce incoming gas
pressure. You must reduce incoming gas
pressure to between 11" and 14" of water. If
you do not reduce incoming gas pressure,
replace regulator damage could occur. Install
external regulator with the vent pointing down
as shown in Figure 30. Pointing the vent down
protects it from freezing rain or sleet.
CAUTION: Use only new,
black iron or steel pipe. Inter-
nally-tinned copper tubing may
be used in certain areas. Check
your local codes. Use pipe of
1/2" inside diameter or greater
to allow proper gas volume to
replace. If pipe is too small,
undue loss of volume will occur.
Propane/LP
Supply Tank
External
Regulator
Vent
Pointing
Down