Desa Tudor VT36NA Series Quick start guide
For more information, visit www.desatech.com
DIRECT-VENT FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
NATURAL GAS “TUDOR” MODELS (V)T36NA SERIES
AND CTDV36NRA
PROPANE/LP GAS “TUDOR” MODELS (V)T36PA SERIES
WARNING: If the information in this manual is not fol-
— WHAT TO DO IF YOU SMELL GAS
• Do not touch any electrical switch; do not use any
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SAFETY INFORMATION
TABLE OF CONTENTS
Safety Information ............................................... 2
Local Codes......................................................... 4
Product Identication........................................... 4
Product Features................................................. 4
Pre-Installation Preparation................................. 5
Location of Termination Cap................................ 7
Venting Installation Instructions ........................... 8
Fireplace Installation.......................................... 18
Operating Fireplace........................................... 27
Inspecting Burners............................................. 30
Cleaning and Maintenance................................ 30
Troubleshooting ................................................ 32
Replacement Parts............................................ 36
Service Hints ..................................................... 36
Technical Service............................................... 36
Specications .................................................... 36
Accessories ....................................................... 36
Illustrated Parts Breakdown and Parts List........ 38
Warranty Information ...........................Back Cover
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teration, service or main-
to this manual for correct
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tance or additional infor-
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stalled in an aftermarket,*
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State of Massachusetts:
The installation must
the Commonwealth of
Installation and service must
chemicals known to the State
of California to cause cancer or
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DANGER
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111250-01E 3
SAFETY INFORMATION
Continued
This replace must be installed by a qualied (cer-
tied 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 combus-
tion 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, connected, and sealed, carbon monoxide
leakage (spillage) can occur.
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 qualified service
person. Some people are more affected by carbon
monoxide than others. These include pregnant
women, people with heart or lung disease or
anemia, those under the inuence of alcohol, and
those at high altitudes.
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.
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WARNING: Do not allow fans
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adults away from hot surface to
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dren when they are in the room
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 supplier'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 replace front
• in high trafc areas
4. Turn appliance off and let cool before servic-
ing, installing or repairing. Only a qualied
service person should install, service or repair
this replace. Have replace inspected annu-
ally by a qualied service person.
5. You must keep control compartments, burn-
ers and circulating air passages clean. More
frequent cleaning may be needed due to ex-
cessive lint and dust from carpeting, bedding
material, etc. Turn off the gas valve and pilot
light before cleaning replace.
6. Have venting system inspected annually by
a qualied 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 electri-
cally grounded in accordance with local codes
or, in the absence of local codes, with the
National Electrical Code, ANSI/NFPA 70 or
the Canadian Electrical Code, CSA C22.1.
9. Do not use replace if any part has been ex-
posed to or under water. Immediately call a
qualied service person to arrange for replace-
ment of the unit.
10. Do not operate replace if any log is broken.
11. Do not operate fireplace with glass door
removed, cracked or broken.
12. Provide adequate clearances around air
openings.
Figure 1 - Tudor Direct-Vent Fireplace
with Millivolt Ignition
Glass Door
Assembly
ON/OFF/
REMOTE
Switch (Optional
Installation)
Upper Louver
Panel
Lower
Louver
Panel
Flue Collar
Nailing
Flange
LOCAL CODES
Install and use replace with care. Follow all local
codes. In the absence to local codes, use the cur-
rent National Fuel Gas Code ANSI Z223.1/NFPA
54* (USA) or the current CSA-B149.1 Installation
Code (Canada).
*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 understand
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/exte-
rior wall (horizontal). 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 followed.
Control
Valve
Glowing
Embers
Blower Switch
(Optional
Installation)
Grate
Assembly
Lava Rock
Log Set
Piezo
Ignitor
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111250-01E 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 opera-
tion (see Accessories, page 36).
• This replace does not require electricity to
operate.
• Only the blower requires electricity if installed
and if you plan to install the blower at a later
date, do not forget to wire the outlet at the bot-
tom of the replace when framing.
• A piezo ignitor and ceramic electrode create
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 in-
side of the replace glass. This is normal and will
disappear after 10-20 minutes of operation.
• Your direct-vent gas replace system (replace
and venting) is a balanced and sealed gas op-
erating unit. It requires approximately 10-20
minutes of operating time before the ame
pattern stabilizes.
PRE-INSTALLATION
PREPARATION
LOCATION AND SPACE
REQUIREMENTS
Determine the safest and most efcient location
for your DESA 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
common 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 chim-
ney ue serving a separate solid-fuel burning
replace or appliance.
• Due to high temperatures, do not locate this
replace in high trafc 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 mate-
rial 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 clear-
ance 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 spacers are integrally attached. If standoff
spacers are attached to your replace, these spac-
ers 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 replace, it
is recommended that you maintain a minimum
18" above top of louver opening.
• When locating termination cap, it is important
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 excessive
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 re-
place 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 specic
venting clearances.)
Combustible material with a maximum thickness of
5/8" may be ush with the top front of replace.
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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 sepa-
rate 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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111250-01E 7
Figure 7 - Minimum Clearances for Termination Cap
LOCATION OF TERMINATION CAP
Fixed
Closed Openable Fixed
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 METER RESTRICTED 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-
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These models are tested and approved for use with
DESA (direct-vent) pipe components and termina-
tions as well as Simpson-Duravent direct-vent pipe
components and terminations.
The venting system must terminate on the outside of
the structure and can not be attached 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 fol-
lowing guidelines:
• When venting system terminates horizontally
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 combustibles
are 1" on all sides except on the horizontal
sections, which requires 2" clearance 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 components on
hand to help determine the exact measurements
when elbowing or offsetting. Always use wall
restops when penetrating walls and restops
when penetrating ceilings or attic spaces.
• If using a venting conguration of only hori-
zontal venting with no vertical run, a 1/4" rise
for every 12" of run toward the termination is
required.
WARNING: Read all instruc-
Failure to do so could result in
NOTICE:Failuretofollowthesein-
NOTICE: Do not seal termination
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 modication of the venting sys-
tem (Do not cut or alter vent components)
• Installation of any component part not manu-
factured or approved by DESA
• Installation other than as instructed by these
instructions
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111250-01E 9
INSTALLATION PLANNING
There are two basic types of direct-vent in-
stallation:
• Horizontal Termination
• Vertical Termination
Horizontal Termination Installation
IMPORTANT: Horizontal square terminations
require only inner portion of wall restop. Hori-
zontal installations using round termination 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 deter-
mine the route your horizontal venting will take.
Do not secure the replace until all venting has
been installed. Some installations require sliding
the replace in and out of position to make nal
venting connections. Figures 14 through 18 on
pages 11 through 13 show different congura-
tions 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 vent-
ing 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 connections.
Twist-Lock Procedure: The female ends of the
pipes have locking lugs (indentations). These
lugs will slide straight into matching slots on
the male ends of adjacent pipes. Push pipe sec-
tions 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 system
to replace ue collar. The elbow is designed
to be twist-locked onto the flue collar as
described in step 2. IMPORTANT: Do not
attempt to alter the conguration 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 as subassem-
blies for convenience.
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
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 noncom-
bustible 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
6. 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
fasteners for stucco, brick, concrete or other
types of sidings.
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. Ap-
ply 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
Figure 11). The siding standoff must sit ush
against the exterior fascia material.
7. Slide the wall
restop over the vent pipe before connecting
horizontal run to vent cap (see Figure 12).
8. Carefully move replace, with vent assembly
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. 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 replace 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
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111250-01E 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
Figures 14 through 18 show different congura-
tions and alternatives for venting with horizontal
termination. Each figure includes a chart with
critical minimum and maximum dimensions which
MUST be met. IMPORTANT: If using a venting
conguration 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
WARNING: Never run vent
downward as this may cause
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GROUND FLOOR INSTALLATION
Recommended Applications:
• Installation using cabinet surrounds
• Through the wall using round or square termina-
tion (up to 12" horizontal pipe)
• NOT FOR CORNER INSTALLATION
Horizontal
High Wind
Square
Termination
Wall Firestop
45° Elbow
Figure 14 - Horizontal Termination
Conguration for Square and Round
Terminations
45° Elbow
Wall
Firestop
Slide Ring
Over Elbow
to Complete
Connection
Exterior Portion
of Wall Firestop
(Round
Termination
Only)
Adjustable
Pipe 12" Max.
Round Termination
* 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.
32" min. 17" Max.
Round
Termination
Cap
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CORNER AND ALTERNATE INSTALLATION
Recommended Applications:
• Corner ground oor installation
• Ground oor installation where pipe vents horizon-
tally through wall (over 12" horizontal pipe)
• Basement installation where one foot clearance
from ground to termination is possible
VENTING INSTALLATION INSTRUCTIONS
Continued
Figure 15 - Horizontal Termination Conguration 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.
*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
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 Congurations for Below Ground Installation
Snorkel Termination
Adequate
Drainage
12" Min.
12" Min.
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111250-01E 13
VENTING INSTALLATION INSTRUCTIONS
Continued
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 Conguration for Venting Using Two 90° Elbows
45° Elbow
HORIZONTAL SYSTEM INSTALLATION
The following congurations show the minimum
vertical rise requirements for a horizontal system
using two 90° elbows.
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 Conguration for Venting Using Two 90° Elbows
with Termination at 90° with Fireplace
45° Elbow
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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 cut-
ting load bearing members. Note: Pay special
attention to these installation 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
vertical 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 posi-
tion 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.
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 dimen-
sions, 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 insu-
lated 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.
4. Connect a section of pipe and extend up
through the hole.
Note: If an offset is needed to avoid obstruc-
tions, you must support the vent pipe every 3
feet. Use wall straps for this purpose (see Fig-
ure 19). Whenever possible, use 45° elbows
instead of 90° elbows. The 45° elbow offers
less restriction to the ow of the ue gases
and intake air.
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.desatech.com
111250-01E 15
5. Place the ashing over the pipe section(s)
extending through the roof. Secure the base of
the ashing to the roof and framing with roof-
ing nails. Be sure roong 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 increase vent height
for steep roof pitches. Nearby trees, adjoining
rooines, 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 section
of vent pipe.
Note: If the vent pipe passes through any occupied
areas above the rst oor, including storage spaces
and closets, you must enclose pipe. You may
frame and sheetrock the enclosure 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
Figures 21 through 24 show four different con-
gurations for vertical termination.
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
Conguration 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
5' min. 2' max.
6' min. 4' max.
7' min. 6' max.
8' min. 8' max.
20' max. 8' max.
Figure 22 - Vertical Venting
Conguration Using One 90° Elbow
(Vertical Round High Wind Termination
Shown)
45° Elbow
Note: Install restrictor into
inner collar of replace as
shown.
www.desatech.com 111250-01E16
VENTING INSTALLATION
INSTRUCTIONS
Continued
Note: Install
restrictor into
inner collar of
replace as
shown.
Vertical (V1
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
Conguration Using Two 90° Elbows
(Vertical Round High Wind Termination
Shown)
45° Elbow
V = 40' max.
Figure 24 - Vertical Venting
Conguration With No Horizontal Run
(Vertical Round High Wind Termination
Shown)
Note: Install
restrictor into
inner collar of
replace as
shown.
45° Elbow
HIGH ALTITUDE INSTALLATION
Your DESA direct-vent replace has been tested and
approved for elevations from 0-2,000 feet (USA)
and elevations from 0-4,500 feet (Canada).
When installing this fireplace at an elevation
above 2,000 feet (in the USA), you may need to
decrease the input rating by changing the existing
burner orice to a smaller size. Reduce input 4%
for each 1,000 feet above sea level. Check with
your local gas company for proper orice size
identication.
When installing this fireplace at an elevation
above 4,500 feet (in Canada), check with local
authorities.
Consult your local gas company to help determine
the proper orice for your location.
For assistance with any high altitude installation,
contact DESA’s Customer Service Department at
1-866-672-6040.
www.desatech.com
111250-01E 17
AND COMPONENTS
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
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)
E47-45 45° Elbow, Galvanized
E47-90 90° Elbow, Galvanized
DESA Terminations
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
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.desatech.com 111250-01E18
FIREPLACE
INSTALLATION
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 Ac-
cessories, page 36). A conversion kit is supplied
with the CTDV36NRA.
ACCESSORIES
-
electrical outlet installed in the
Follow all instructions provided in blower ac-
cessory 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 up-
ward. 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 pro-
vided on shaft.
7. Turn on power to duplex outlet if previously
turned off per the warning above.
8. Plug in blower power cord.
a. If your rebox is installed as a freestanding
unit with an accessory mantel, 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 receptacle 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
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.desatech.com
111250-01E 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 completely
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 counterclockwise 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).
Note: When installing BKT thermostatically-
controlled blower, you must rst secure thermal
switch bracket to blower if it has not already been
factory installed.
1. Place green ground wire with ring terminal be-
tween bottom hole on thermal switch bracket
and top ear hole on blower assembly. 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 up-
ward and thermodisc positioned up near re-
place bottom. Thermodisc must be oriented near
replace bottom as shown in Figure 28 in order
to sense temperature and properly 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 completely
clear of blower wheel and that no other foreign
objects are in blower wheel. Also double
check all wire leads and make sure wire rout-
ing 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 tem-
perature 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.desatech.com 111250-01E20
11. Peel off backing paper and stick supplied
wiring diagram decal on rebox bottom ap-
proximately 12" in front of blower (see Figure
27, page 19).
-
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: For natural
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 connector
(if allowed by local codes)
* A CSA design-certied equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to test
gauge connection. Purchase the CSA design-certi-
ed equipment shutoff valve from your retailer.
For propane/LP connection only, the installer must
supply an external regulator. The external regula-
tor 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,
-
-
Figure 30 - External Regulator with Vent
Pointing Down (Propane/LP Only)
Propane/LP
Supply Tank
External
Regulator
Vent
Pointing
Down
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