Desa (V)V42NA(1) Quick start guide

FOR YOUR SAFETY
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 fire
department.
WARNING: Improper installation, ad-
justment,alteration,service,ormainte-
nance can cause injury or property
damage. Refer to this manual for cor-
rectinstallationandoperationalproce-
dures. For assistance or additional in-
formation consult a qualified installer,
service agency, or the gas supplier.
This appliance may be installed in an aftermarket*, permanently located, manufactured
(mobile) home, where not prohibited by state or local codes.
WARNING: If the information in this manual is not
followedexactly,afireorexplosionmayresultcaus-
ing property damage, personal injury, or loss of life.
FOR YOUR SAFETY
Donotstoreorusegasolineorotherflammablevapors
andliquidsinthevicinityofthisoranyotherappliance.
Installation and service must be
performed by a qualified installer,
service agency, or the gas supplier.
This appliance is only for use with the
type of gas indicated on the rating
plate.Thisapplianceisnotconvertible
for use with other gases, unless a
certified kit is used.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer.
Save this manual for future reference.
Save this manual for future reference.
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DIRECT-VENT FIREPLACE
OWNER’S OPERATION AND
INSTALLATION MANUAL
NATURAL GAS MODELS (V)V42NA(1) AND CHDV42NRA
PROPANE/LP GAS MODEL (V)V42PA(1)

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SAFETY INFORMATION
1. 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 certified kit is used.
2. For propane/LP fireplace, 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 pro-
pane/LP fuel tank of less than 100 lbs. capacity.
3. 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 fire department.
4. Never install the fireplace
• in a recreational vehicle
• in windy or drafty areas where curtains or other combustible
(flammable)objects canmake contactwith thefireplace front
• in high traffic areas
IMPORTANT: Read this owner’s manual carefully
andcompletelybeforetryingtoassemble,operate,or
service this fireplace. Improper use of this fireplace
can cause serious injury or death from burns, fire,
explosions, electrical shock, and carbon monoxide
poisoning.
WARNING: Any change to this fireplace or its
controls can be dangerous.
WARNINGS
DANGER: Carbon monoxide poisoning may lead
to death!
This fireplace must be installed by a qualified (certified 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.Itbringsinfreshairforcombustionthroughtheouterpipeand
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.
Carbon Monoxide Poisoning: Early signs of carbon monoxide
poisoningresemble theflu, withheadaches, dizziness,or nausea. If
you have these signs, the fireplace may not have been installed
properly. Get fresh air at once! Have fireplace inspected and
serviced by a qualified service person. Some people are more
affected by carbon monoxide than others. These include pregnant
women,peoplewithheartorlungdiseaseoranemia,thoseunderthe
influence of alcohol, and those at high altitudes.
Natural and Propane/LP Gas: Natural and propane/LP 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 fireplace.
TABLE OF CONTENTS
SAFETY INFORMATION
TABLE OF CONTENTS
SAFETY INFORMATION ............................................................ 2
PRODUCT IDENTIFICATION ..................................................... 3
LOCAL CODES........................................................................... 3
PRODUCT FEATURES .............................................................. 4
PRE-INSTALLATION PREPARATION ........................................ 4
LOCATION OF TERMINATION CAP .......................................... 6
VENTING INSTALLATION INSTRUCTIONS .............................. 7
FIREPLACE INSTALLATION .................................................... 17
OPERATING FIREPLACE ........................................................ 26
INSPECTING BURNERS.......................................................... 28
CLEANING AND MAINTENANCE ............................................ 29
TROUBLESHOOTING .............................................................. 30
REPLACEMENT PARTS .......................................................... 33
SPECIFICATIONS .................................................................... 33
SERVICE HINTS....................................................................... 33
TECHNICAL SERVICE ............................................................. 33
ILLUSTRATED PARTS BREAKDOWNAND PARTS LIST........ 34
ACCESSORIES ........................................................................ 38
OWNER'S REGISTRATION FORM .......................................... 39
WARRANTY INFORMATION...................................... Back Cover
WARNING:Thisproductcontainsand/orgenerates
chemicals known to the State of California to cause
cancer or birth defects, or other reproductive harm.

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5. This fireplace reaches high temperatures. Keep children and
adults away from hot surfaces to avoid burns or clothing igni-
tion. Fireplace will remain hot for a time after shutdown. Al-
low surfaces to cool before touching.
6. Carefully supervise young children when they are in the room
with fireplace.
7. Do not modify this fireplace under any circumstances. Any
parts removed for servicing must be replaced prior to operat-
ing fireplace.
8. Turn fireplace off and let cool before servicing, installing, or
repairing. Only a qualified service person should install, ser-
vice, or repair this fireplace. Have fireplace inspected annu-
ally by a qualified service person.
9. You must keep control compartments, burners, and circulat-
ing air passages clean. More frequent cleaning may be needed
due to excessive lint and dust from carpeting, bedding mate-
rial, etc. Turn off the gas valve and pilot light before cleaning
fireplace.
10. Have venting system inspected annually by a qualified service
person. If needed, have venting system cleaned or repaired.
See Cleaning and Maintenance, page 29.
11. Keep the area around your fireplace clear of combustible ma-
terials, gasoline, and other flammable vapor and liquids. Do
not run fireplace where these are used or stored. Do not place
items such as clothing or decorations on or around fireplace.
12. Do not use this fireplace to cook food or burn paper or other
objects.
13. Do not use any solid fuels (wood, coal, paper, cardboard, etc.)
in this fireplace. Use only the gas type indicated on fireplace
nameplate.
14. This appliance, when installed, must be electrically grounded
inaccordance withlocal codesor, inthe absenceof localcodes,
with the National Electrical Code, ANSI/NFPA 70, or the Ca-
nadian Electrical Code, CSA C22.1.
15. Do not use fireplace if any part has been exposed to or under
water. Immediately call a qualified service person to arrange
for replacement of the unit.
16. Do not operate fireplace if any log is broken.
17. Do not use a blower insert, heat exchanger insert, or other ac-
cessory not approved for use with this fireplace.
18. Do not operate fireplace with glass door removed, cracked, or
broken.
19. Provide adequate clearances around air openings.
SAFETY INFORMATION
Continued
PRODUCT IDENTIFICATION
Figure 1 - Direct-Vent Fireplace with Millivolt Ignition
LOCAL CODES
Install and use fireplace with care. Follow all local codes. In the
absence to local codes, use the current National Fuel Gas Code
ANSI Z223.1/NFPA 54* (USA) or the current CSA-B149.1 Instal-
lation 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
SAFETY INFORMATION
PRODUCT IDENTIFICATION
LOCAL CODES
Glass
Door
Assembly
Blower Switch
(BKT Standard with
CHDV Models)
Piezo
Ignitor
Control
Valve
Log
Set
Grate
Assembly
Lava
Rock
Glowing
Embers
Upper Louver
Panel
Lower
Louver
Panel
Flue Collar
Nailing
Flange
ON/OFF/REMOTE Switch
(Optional Installation)

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PRODUCT FEATURES
These are a few facts that can help you understand and enjoy your
direct-vent fireplace:
• 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 (horizontal). The vent pipe in-
stallation is very important to allow for proper operation. You
must follow the venting instructions very carefully for either
vertical or horizontal applications.
• This fireplace may be installed in any room of your house provided
all local codes and these installation instructions are followed.
• This fireplace 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 bottom of the fireplace 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 fireplace, you may notice some
amount of condensation on the inside of the fireplace glass. This
is normal and will disappear after 10-20 minutes of operation.
• Your direct-vent gas fireplace system (fireplace and venting) is a
balanced and sealed gas operating unit. It requires approximately
10-20minutes ofoperating timebefore theflame patternstabilizes.
PRE-INSTALLATION
PREPARATION
LOCATION AND SPACE REQUIREMENTS
Determine the safest and most efficient location for your DESA
direct-vent fireplace. 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 fireplace and termination cap.
When deciding the location of your fireplace, follow these rules:
• Do not connect this fireplace venting to a chimney flue serving
a separate solid-fuel burning fireplace or appliance.
• Due to high temperatures, do not locate this fireplace in high traf-
fic areas, windy or drafty areas, or near furniture or draperies.
• Proper clearances must be maintained.
• If your fireplace is to be installed directly on carpeting, vinyl
tile, or any combustible material other than wood, it must be
installed on a metal or wood panel extending the full width and
depth of the fireplace. See Figure 3.
• Your fireplace is designed to be used in zero clearance installa-
tions. Wall or framing material can be placed directly against
any exterior surface on the back, sides, or top of your fireplace,
except where standoff spacers are integrally attached. If stand-
off spacers are attached to your fireplace, these spacers can be
placed directly against wall or framing material. See framing
details on page 5.
• If you plan on installing a television or entertainment center re-
cessed above your fireplace, it is recommended that you main-
tain 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 6.
• If recessing into a wall, you can avoid extra framing by position-
ing your fireplace against an already existing framing member.
• Do not recess termination cap into a wall or siding.
• You may paint the termination cap with 450ºF (232ºC) heat-
resistant paint to coordinate with the exterior finish.
• 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 termina-
tion area.
PRODUCT FEATURES
PRE-INSTALLATION PREPARATION
Location and Space Requirements
Figure 2 - Common Fireplace Locations
Flush with a wall
Through exterior wall
enclosed in a chase Corner
installation
Figure 3 - Fireplace Bottom Dimensions
D
RW
FW
231/4"
36 1/4"
48"

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CLEARANCES
Minimumclearancestocombustiblesforthefireplaceareasfollows:
Back, and sides 0"/mm
Perpendicular walls 6" (152mm)
Floor 0"/mm
Ceiling to louver opening 42" (1067mm)
Front 36" (914mm)
Top of Standoffs 0"/mm
Vent (See venting instructions for
specific venting clearances.)
Combustible material with a maximum thickness of 5/8" may be
flush with the top front of fireplace .
FRAMING AND FINISHING
Figure 4 shows typical framing of this fireplace. Figure 5 shows
framingforcornerinstallation.Allminimumclearancesmustbemet.
Foravailableaccessoriesforthisfireplace,seeAccessoriesonpages
38. If you are using a separate combustible mantel piece, refer to
Figure 6 for proper installation height. You can install noncombus-
tible mantels at any height above the fireplace.
Note: Noncombustible mantels may discolor!
PRE-INSTALLATION
PREPARATION
Continued
NOTICE:Thisfireplaceisintendedforuse assupple-
mental heat. Use this fireplace along with your pri-
mary heating system. Do not install this fireplace as
your primary heat source. If you have a central heat-
ingsystem,youmayrun system’scirculatingblower
whileusingfireplace. Thiswillhelp circulatetheheat
throughoutthehouse.Intheeventofapoweroutage,
you can use this fireplace as a heat source.
Figure4-FramingClearancesforInstallationAgainstanExterior
Wall
C
B
A
DE
FG
Top of Louver Opening
3
2
1
4
5
6
7
Wall
A
B
EF
G
H
DC
Nailing Tabs
Figure 5 - Framing Clearances for Corner Installation
Ref. Mantel Depth Ref. Mantel from Top
of Louver Opening
1 14" (356mm) A 16" (406mm)
2 12" (305mm) B 14" (356mm)
3 10" (254mm) C 12" (305mm)
4 8" (203mm) D 10" (254mm)
5 6" (152mm) E 8" (203mm)
6 4" (101mm) F 6" (152mm)
7 2" (51mm) G 4" (101mm)
Figure 6 - Clearances for Combustible Mantels
PRE-INSTALLATION PREPARATION
Clearances
Framing and Finishing
415/8"
215/8"131/2"581/2"
163/4"48"
481/4"
811/2"
401/8"
481/4"25 5/8"

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Fixed
Closed Openable Fixed
Closed
Openable
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 inches (30.5mc) minimum]
B = clearance to window or door that may be opened
[12 inches (30.5cm) minimum]
C = clearance to permanently closed window [minimum 12 inches
(30.5cm) recommended to prevent condensation on window]
D = vertical clearance to ventilated soffit located above the terminal
within a horizontal distance of 24 inches (61cm) from the
center-line of the terminal [18 inches (45.7cm) minimum]
E = clearance to unventilated soffit [12 inches (30.5cm) 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 inches (91.4cm) horizontally from the center-line of the regulator
I = clearance to service regulator vent outlet [*72 inches (182.9cm)
minimum]
J = clearance to non-mechanical air supply inlet to building or the
combustion air inlet to any other fireplace [*12 inches (30.5cm)
minimum]
K = clearance to a mechanical air supply inlet [*72 inches (182.9cm)
minimum]
L = clearance above paved side-walk or a paved driveway located on
public property [*84 inches (213.3cm) minimum]
M = clearance under veranda, porch, deck [*12 inches (30.5cm) minimum ]
N = clearance above a roof shall extend a minimum of 24 inches (61cm)
above the highest point when it passes through the roof surface and
any other obstruction within a horizontal distance of 18 inches (45.7cm)
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" (15.2cm)
Inside Corner
V
B
E
V
B = 6" (15.2cm)
C = Maximum depth of 48" (121.9cm) for
recessed location
D = Minimum width for back wall of
recessed location -
Combustible - 38" (965mm)
Noncombustible - 24" (61cm)
E = Clearance from corner in
recessed location-
Combustible - 6" (15.2cm)
Noncombustible - 2" (5.1cm)
Outside Corner Recessed Location
G
H
G = 12" (30.5cm) minimum clearance
Balcony with No SideWall
V
J
Combustible &
Noncombustible
H = 24" (61cm)
J = 20" (50.8cm)
Balcony with Perpendicular Side Wall
CDC
Termination Clearances for Buildings with Combustible and Noncombustible Exteriors
Figure 7 - Minimum Clearances for Termination Cap
LOCATION OF TERMINATION CAP
LOCATION OF TERMINATION CAP

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These models are tested and approved for use with DESA (direct-
vent) pipe components and terminations.
Theventingsystemmustterminateontheoutsideofthestructureand
can not be attached to a chimney or flue system serving a separate
solidfuelorgasburningappliance.Adirect-ventappliancemusthave
its own venting system. DO NOT common vent this appliance.
Thesemodelsareapprovedtobeventedeitherhorizontallythrough
anoutsidewall or verticallythrougharoofor chaseenclosureusing
the following guidelines:
• When venting system terminates horizontally on an outside wall,
you must install a standoff if the termination cap is to be in-
stalled directly on a combustible finish such as vinyl, wood,
stucco, etc.
• Never run the vent downward as this may cause excessive tem-
peratures which could cause a fire.
• 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.
• Snorkelterminationsarerequiredwhenminimumclearancetograde
cannot be met (see Figure 16 on page 11).
• Have fireplace and selected vent components on hand to help
determine the exact measurements when elbowing or offsetting.
Always use wall firestops when penetrating walls and firestops
when penetrating ceilings or attic spaces.
• Install horizontal venting with a 1/4" rise for every 12" of run
toward the termination.
VENTING INSTALLATION
INSTRUCTIONS
NOTICE: Read these instructions completely be-
fore attempting installation.
WARNING: Read all instructions completely and
thoroughly before attempting installation. Failure to
dosocouldresultinseriousinjury,propertydamage
or loss of life.
NOTICE: Failure to follow these instructions will void
the warranty.
WARNING: This gas fireplace and vent assembly
must be vented directly to the outside. The venting
system must NEVER be attached to a chimney serv-
ing 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 com-
bustibles 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 com-
bustible wall, 1" air space clearance is required.
VENTING INSTALLATION INSTRUCTIONS
Installation Precautions
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
• Unauthorizedmodification ofthe ventingsystem (Donot cut
or alter vent components)
• Installation of any component part not manufactured or ap-
proved by DESA
• Installation other than as instructed by these instructions

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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 firestop. Horizontal installations using round termi-
nationrequireexteriorportionofwallfirestopavailableonlyinvent
kit 01491 for V and VV Series or SDHTRK-58 for CHDV Series
(see Figure 14, page 10).
1. Set the fireplace in its desired location and determine the route
your horizontal venting will take. Do not secure the fireplace
until all venting has been installed. Some installations require
sliding the fireplace in and out of position to make final vent-
ing connections. Figures 14 through 18 on pages 10 through
12 show different configurations 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 fireplace.
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
sections together and twist one section clockwise approxi-
mately one-quarter turn until the sections are fully locked
(see Figure 8). Note: Horizontal runs of vent must be sup-
ported every three feet. Use wall straps for this purpose.
3. Use a 45° elbow to connect venting system to fireplace flue col-
lar. The elbow is designed to be twist-locked onto the flue collar
as described in step 2. IMPORTANT: Do not attempt to alter the
configuration of the elbow by cutting, twisting, bending, etc.
4. Assemble the desired combination of pipe and elbows to the
fireplace flue collar. If there are long portions of venting run,
pre-assembled pipe sections may be installed 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
fora 103/4"x 103/4" squarehole.Cut andframe the squarehole in
the exterior wall where the vent will be terminated. If the wall
being penetrated is constructed of noncombustible material, such
as masonry block or concrete, a 8 1/2" hole with zero clearance is
acceptable (see Figure 9).
VENTING INSTALLATION
INSTRUCTIONS
Continued
VENTING INSTALLATION INSTRUCTIONS
Installation Planning
Figure 8 - Vent Pipe Connections
(Framing
Detail)
10 3/4"
(273mm)
10 3/4" Inside Framing
(273mm)
10 3/4"
(273mm)
8 1/2"
(216mm)
Vent Opening
Combustible Wall
Vent Opening
Noncombustible Wall
Figure 9 - Vent Opening Requirements
Center
of Hole
Female
Locking Lugs
Male
Slots

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WARNING: Do not recess vent termination into
any wall. This will cause a fire hazard.
6. Noncombustible Exterior Wall: Position the horizontal vent
cap in the center of the 8 1/2" round hole and attach to the exte-
rior wall with four wood screws provided. Before attaching
thevent captoexterior wall,run a beadof non-hardeningmastic
(pliable sealant) around the outside edges to make a seal be-
tween 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.
Combustible ExteriorWall: For vinyl siding, stucco, or wood
exteriors, a siding standoff must 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 stand-
off.Apply non-hardening mastic around outside edge of stand-
off. Position the standoff/cap assembly in the center of the
10 3/4" square hole and attach to exterior wall with wood
screws provided (see Figure 11). The siding standoff must sit
flush against the exterior fascia material.
7. Combustible ExteriorWall Only: Slide the wall firestop over
the vent pipe before connecting horizontal run to vent cap (see
Figure 12).
8. Carefully move fireplace, with vent assembly attached, toward
wall and insert vent pipe into horizontal termination. The pipe
overlap should be a minimum of 11/4". Fasten all vent pipe
connections (except vent cap) with screws provided.
VENTING INSTALLATION
INSTRUCTIONS
Continued
VENTING INSTALLATION INSTRUCTIONS
Installation Planning (Cont.)
Figure 10 - Installing Horizontal Vent Cap (Noncombustible
Exterior)
Apply Mastic to
All Four Sides
Figure 11 - Installing Siding Standoff (Combustible Exterior)
Vent Cap
(Horizontal
Termination)
Interior Wall
Surface
Wall
Firestop
Horizontal
Vent Pipe
Figure 12 - Connecting Vent Cap with Horizontal Vent Pipe
Screw
Cut Siding Away
to Fit Standoff
Wood Screw
Screws
Standoff
Vent Cap
Apply Mastic
to All Four Sides
Wood Screw
Vent Cap

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Horizontal High
Wind Square
Termination
Wall
Firestop
45° Elbow
Figure 14 - Horizontal Termination Configuration for Square or
Round Terminations
45° Elbow
Wall
Firestop
Horizontal
Round
Termination
Exterior Portion of Wall
Firestop (Round
Termination Only)
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
VENTING INSTALLATION
INSTRUCTIONS
Continued
VENTING INSTALLATION INSTRUCTIONS
Installation Planning (Cont.)
Adjustable
Pipe 12" Max.
Horizontal Termination Configurations
Figures14 through18showdifferent configurationsandalternatives
for venting with horizontal termination. Each figure includes a chart
with critical minimum and maximum dimensions which MUST be
met. IMPORTANT: Rememberthatahorizontalrunofventingmust
have a 1/4" rise for every 12" of run toward the termination.
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 3/4" x 10 3/4"
Framed
Opening
Maintain 1"
Minimum Air
Space Around
Outer Pipe When
Penetrating a Wall
Minimum Pipe
Overlap 11/4"
Wall
Firestop
Direct Vent
Pipe
WARNING: Neverrunvent downwardasthis may
cause excessive temperatures which could cause a
fire. Operation of improperly installed and main-
tained venting system could result in serious injury,
property damage or loss of life.
9. Combustible Exterior Wall Only: Slide wall firestop against
interior wall surface and attach with screws provided. See Figure
13 for horizontal termination details.
10. Place fireplace into position and shim with noncombustible ma-
terial if needed. Nail or screw side flanges to framing to secure
unit in place.
IMPORTANT: Make sure fireplace is level before
securing. If fireplace is not level it will not work properly.
Round Termination
(V42A Series Kit SDHTRK-58
CHDVA Series)
Square Termination
Vertical (V) Horizontal (H)
36 3/4" min. 17" max.

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11
Figure 15 - Horizontal Termination Configuration 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" Minimum
CORNER INSTALLATION
Recommended Applications:
• Corner ground floor installation
• Groundfloorinstallationwherepipeventshorizontallythroughwall
(over 12" horizontal pipe)
• Basement installation where one foot clearance from ground to
termination is possible
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
installingsnorkelterminationbelowgrade,youmustprovideproperdrainagetopreventwaterfromenteringsnorkel
termination (see Figure 16). Do not back fill around snorkel termination.
VENTING INSTALLATION
INSTRUCTIONS
Continued
VENTING INSTALLATION INSTRUCTIONS
Installation Planning (Cont.)
12"
Minimum
Snorkel
Termination
12"
Minimum
Snorkel
Termination
Wall
Firestop
90°Elbow
45°
Elbow
Figure 16 - Snorkel Termination Configurations for Below Ground Installation
Vertical (V) Required Horizontal (H)
Vertical Pipe
46 1/4" min. None 30" max.
57 1/4" min. 1 ft. 48" max.
69 1/4" min. 2 ft. 60" max.
81 1/4" min. 3 ft. 84" max.
93 1/4" min. 4 ft. 20' max.
Not to Exceed
(H) Limits
12"
Minimum
Snorkel
Termination
Adequate
Drainage

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Venting withTwo 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 Configuration for Venting Using Two 90°Elbows with Termination at 90°with Fireplace
Venting withTwo 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 Configuration for Venting Using Two 90°Elbows
VENTING INSTALLATION
INSTRUCTIONS
Continued
VENTING INSTALLATION INSTRUCTIONS
Installation Planning (Cont.)
45°Elbow
45°Elbow
HORIZONTAL SYSTEM INSTALLATION USING TWO 90°
ELBOWS
The following configurations show the minimum vertical rise
requirements for a horizontal system using two 90° elbows.

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13
INSTALLATION FOR VERTICAL TERMINATION
Note: Vertical restrictormustbe installed inallvertical 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 com-
bustibles when passing through ceilings, walls, roofs, enclo-
sures, 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 fireplace in desired location. Drop a plumb line down
from the ceiling to the position of the fireplace exit flue. 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.
VENTING INSTALLATION
INSTRUCTIONS
Continued
Flat Ceiling Installation
1. Cut a 10 3/4" square hole in the ceiling using the locating hole as
a center point. The opening should be framed to 10 3/4"x10 3/4"
(273mm x 273mm) inside dimensions, as shown in Figure 9 on
page 8 using framing lumber the same size as the ceiling joists.
If the area above the ceiling is an insulated ceiling or a room,
nail firestop from the top side. This prevents loose insulation
from falling into the required clearance space. Otherwise, in-
stall firestop below the framed hole. The firestop should be in-
stalled with no less than three nails per side (see Figure 20).
Figure 19 - Offset with Wall Strap and 45°Elbows
Figure 20 - Installing Firestop
If area above is not a room, install
firestop below framed hole.
If area above is a room, install
firestop above framed hole.
2. Assemble the desired lengths of pipe and elbows necessary to
reach from the fireplace flue up through the firestop. Be sure
all pipe and elbow connections are fully twist-locked (see Fig-
ure 8, page 8).
3. Cut a hole in the roof using the locating hole as a center point.
(Coverany exposedopenvent pipesbeforecutting holeinroof.)
The 10 3/4"x10 3/4" 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 8.
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). Whenever possible, use 45° elbows
instead of 90° elbows. The 45° elbow offers less restriction to
the flow of the flue gases and intake air.
5. Place the flashing over the pipe section(s) extending through
the roof. Secure the base of the flashing to the roof and fram-
ing with roofing nails. Be sure roofing material overlaps the
top edge of the flashing as shown in Figure 19. 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 6. Note : You must increase vent height for
steep roof pitches. Nearby trees, adjoining rooflines, 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: Iftheventpipepassesthroughanyoccupiedareasabovethefirst
floor,includingstoragespacesandclosets,youmustenclosepipe.You
may frame and sheetrock the enclosure with standard construction
material. Make sure and meet the minimum allowable clearances to
combustibles.Donot fill anyoftherequiredair spaces withinsulation.
VENTING INSTALLATION INSTRUCTIONS
Installation for Vertical Termination
45°Elbow
Wall Strap
Roof Flashing
Ceiling Firestop

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VENTING INSTALLATION
INSTRUCTIONS
Continued
Vertical Termination Configurations
Figures 21 through 24 show four different configurations for verti-
cal termination.
Venting withTwo 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.
Figure21-VerticalVentingConfigurationUsingTwo90°Elbows
withTwoHorizontalRuns(VerticalRoundHighWindTermination
Shown)
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.
Figure22 -VerticalVentingConfiguration UsingOne90°Elbow
(Vertical Round High Wind Termination Shown)
Note: Install restrictor
into inner collar of
fireplace as shown.
Venting withTwo 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.
Figure23-VerticalVentingConfigurationUsingTwo90°Elbows
(Vertical Round High Wind Termination Shown)
VENTING INSTALLATION INSTRUCTIONS
Installation for Vertical Termination (Cont.)
Note: Install
restrictor into
inner collar of
fireplace as
shown.
45°Elbow
Note: Install restrictor
into inner collar of
fireplace as shown.
45°Elbow
45°Elbow

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15
VENTING INSTALLATION
INSTRUCTIONS
Continued
Vertical Venting
V = 40' max.
Figure 24 - Vertical Venting Configuration With No Horizontal
Run (Vertical Round High Wind Termination Shown)
Note:
Install restrictor
into inner collar of
fireplace as shown.
45°Elbow
HIGH ALTITUDE INSTALLATION
Your DESA direct-vent fireplace has been tested and approved for
elevationsfrom0-2000 feet(USA) andelevationsfrom0-4500feet
(Canada).
Wheninstallingthisfireplaceatanelevationabove2000feet(intheUSA),
youmay needtodecreasethe inputratingby changingtheexistingburner
orificetoasmallersize.Reduceinput4%foreach1000feetabovesealevel.
Check with your local gas company for proper orifice size identification.
When installing this fireplace at an elevation above 4500 feet (in
Canada), check with local authorities.
Consultyourlocalgascompanytohelpdeterminetheproperorifice
for your location.
For assistance with any high altitude installation contact DESA’s
Customer Service Department at 1-866-672-6040.
VENTING INSTALLATION INSTRUCTIONS
Installation for Vertical Termination (Cont.)
High Altitude Installation
Parts Lists for Venting Kits and Components for V42 and VV42 Series
PARTS LISTS FOR VENTING KITS AND
COMPONENTS FOR V42 AND VV42 SERIES
DESA (5/8") Pipe & Vent Kits
Number Description
P58-6 6" Section Double Wall Pipe, Galvanized
P58-12 12" Section Double Wall Pipe, Galvanized
P58-24 24" Section Double Wall Pipe, Galvanized
P58-36 36" Section Double Wall Pipe, Galvanized
P58-48 48" Section Double Wall Pipe, Galvanized
PA58-712 Adjustable 7"-12" Section Double Wall Pipe, Galva-
nized
FPA58-6 6"DuraventCollartoFMIPipeAdaptor(6"collar/Pipe
Section)
DPA58-6 6"FMICollartoPipeDuraventAdaptor(6"collar/Pipe
Section)
E58-45 45 deg. Elbow, Galvanized
E58-90 90 deg. Elbow, Galvanized
FSE58-45 45deg.StarterElbow,Galvanized(DuraventCollarto
FMI Pipe)
DSE58-45 45 deg. Starter Elbow, Galvanized (FMI Collar to
Duravent Pipe)
VKG-58 Ground Floor Vent Kit
VKB-58 Basement Vent Kit
VKS-58 Snorkel Vent Kit
VKR-58 Roof Vent Kit
VKC-58 Corner Vent Kit
HTK Horizontal Round Termination Kit
HT-58 Horizontal Round Termination, Galvanized
HTS-58 Horizontal Square Termination, Galvanized
VT-58 Vertical Round Termination, Galvanized
ST-58-14 14" Snorkel Termination, Galvanized
ST-58-36 36" Snorkel Termination, Galvanized
SC-58 Storm Collar, Galvanized
WF-58 Wall Firestop, Galvanized
RF-58-6 Roof Flashing - 0 to 6/12 Pitch, Galvanized
RF-58-12 Roof Flashing - 6/12 to 12/12 Pitch, Galvanized
VR-58 Vertical Restrictor, Galvanized
S-58 Vinyl Siding Standoff, Galvanized
WS-58 Wall Strap
CS-58 Cathedral Ceiling Support

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01507 Storm Collar - Galvanized (4)
01508 Wall Strap (4)
01514 Combustible Siding Standoff - Galvanized (1)
01607 Wall Firestop - Galvanized (4)
VR-58 Vertical Restrictor - Galvanized
VENTING INSTALLATION
INSTRUCTIONS
Continued
VENTING INSTALLATION INSTRUCTIONS
Parts Lists for Venting Kits and Components for V42 and VV42 Series (Cont.)
Parts Lists for Venting Kits and Components for (V)V421 Model Series
Parts Lists for Venting Kits and Components for CHDV Model Series
PARTS LISTS FOR VENTING KITS AND
COMPONENTS FOR CHDV MODEL SERIES
DESA (5/8") Pipe & Vent Kits
Number Description
SDHTSK-58 Horizontal Square Termination Kit
Includes: 45° Elbow (Through 5" Wall), Wall
Firestop, Horizontal Square Termination
SDHTBK-58 Basic Vertical Termination Kit
Includes: Vertical Termination, Adjustable Flash-
ing, Storm Collar
SDHTRK-58 Horizontal Round Termination Kit
Includes: Round Termination, Wall Firestop,
and 45° Elbow (Through 5" Wall)
SDP58-12 12" Section Coaxial Pipe - Galvanized (1)
SDP58-18 18" Section Coaxial Pipe - Galvanized (1)
SDP58-24 24" Section Coaxial Pipe - Galvanized (1)
SDP58-36 36" Section Coaxial Pipe - Galvanized (1)
SDP58-48 48" Section Coaxial Pipe - Galvanized (1)
SDP58-6 6" Section Coaxial Pipe - Galvanized (1)
SDAP58-1724 Adjustable 17"-24" Section Coaxial Pipe -
Galvanized (1)
SDAP58-712 Adjustable 7"-12" Section Coaxial Pipe -
Galvanized (1)
DESA Elbows
Number Description
SDE58-45 45°Elbow - Galvanized (1)
SDE58-90 90°Elbow - Galvanized (1)
DESA Terminations
Number Description
SDVT-58 Vertical Round Termination - Galvanized (1)
SDHT-58 Horizontal Round Termination - Galvanized (1)
SDHTS-58 Horizontal Square Termination - Galvanized (1)
SDVSWT-58 Vertical Round High Wind Termination (1)
SDHSWT-58 Horizontal Square High Wind Termination (1)
SDST14-58 14" Snorkel Termination - Galvanized (1)
SDST36-58 36" Snorkel Termination - Galvanized (1)
DESA Venting Accessories
Number Description
SDFSP-58 Firestop Plate (1)
SDAF-58 AdjustableRoofFlashing[0-8/12]-Galvanized(1)
SDSC-58 Storm Collar - Galvanized (1)
SDWS-58 Wall Strap (1)
SDS-58 Combustible Siding Standoff - Galvanized (1)
SDSPF-58 SteepPitchFlashing[9/12-12/12]-Galvanized(1)
SDWFS-58 Wall Firestop - Galvanized (1)
VR-58 Vertical Restrictor - Galvanized (1)
PARTS LISTS FOR VENTING KITS AND
COMPONENTS FOR (V)V421 MODEL SERIES
DESA (5/8") Pipe & Vent Kits
Number Description
01492 Horizontal Square Termination Kit
Includes: 45° Elbow (Through 5" Wall), Wall Firestop,
Horizontal Square Termination
01493 Basic Vertical Termination Kit
Includes: Vertical Termination, Adjustable Flashing,
Storm Collar
01491 Horizontal Round Termination Kit
Includes: Round Termination, Wall Firestop, and
45° Elbow (Through 5" Wall)
01497 12" Section Coaxial Pipe - Galvanized (4)
01498 18" Section Coaxial Pipe - Galvanized (4)
01499 24" Section Coaxial Pipe - Galvanized (4)
01500 36" Section Coaxial Pipe - Galvanized (4)
01501 48" Section Coaxial Pipe - Galvanized (4)
01513 6" Section Coaxial Pipe - Galvanized (4)
01606 Adjustable 17"-24" Section Coaxial Pipe -
Galvanized (4)
F8030 Adjustable7"-12"Section CoaxialPipe-Galvanized (6)
D1032 Adjustable7"-12"Section CoaxialPipe-Galvanized (1)
DESA Elbows
Number Description
01502 45°Elbow - Galvanized (4)
01503 90°Elbow - Galvanized (4)
DESA Terminations
Number Description
01494 Vertical Round Termination - Galvanized (1)
01495 Horizontal Round Termination - Galvanized (1)
01496 Horizontal Square Termination - Galvanized (1)
01798 Vertical Round High Wind Termination (1)
01800 Horizontal Square High Wind Termination (1)
01801 14" Snorkel Termination - Galvanized (1)
01802 36" Snorkel Termination - Galvanized (1)
DESA Venting Accessories
Number Description
01504 Firestop Plate (4)
01505 Adjustable Roof Flashing [0 - 8/12] - Galvanized (6)
01506 Steep Pitch Flashing 9/12 to 12/12 - Galvanized (6)
PARTS LISTS FOR VENTING KITS AND COMPO-
NENTS FOR V42 AND VV42 SERIES (CONT.)
Number Description
FP-58 Firestop Plate
SF-58 Stucco Flashing - For use with HTS-5

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17
.
FIREPLACE INSTALLATION
Model BK Installation
Follow all instructions provided in the blower accessory kit.
1. Attach the power cord to the blower motor by firmly pushing the
two female terminals at the end of the power cord onto the two
spade terminals on the 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.
CHECK GAS TYPE
Useproper gastypefor thefireplace unityouare installing.Ifyour gas
supply is not correct, do not install fireplace. See retailer where you
purchasedthefireplaceforproperfireplaceaccordingtoyourgastype.
INSTALLING OPTIONAL BLOWER
ACCESSORIES
NOTICE:TheCHDV42NRAmodelfireplacecomeswith
the BKT Blower already installed as standard equip-
ment. If you have a CHDV42NRA model fireplace,
proceed to Installing Gas Piping to Fireplace Loca-
tions , page 19.
NOTICE: If installing blower in an existing fireplace
with gas connections, shut off gas supply and dis-
connect heater from gas supply. Contact a qualified
service person to do this.
WARNING: If there is a duplex electrical outlet
installed in the right side of the bottom of the fireplace
basearea,besurethattheelectricalpowertotheoutlet
isturnedoffbeforeproceedingwithblowerinstallation.
Failure to do this may result in serious injury.
Figure 25 - Blower Model BK
Magnetic Strips
Exhaust
Port
Screw
Green
Ground Wire
Spade Terminals
Figure 26 - Attaching Speed Control to Firebox
Speed Control
Control
Shaft
Locknut
Control
Knob
Switch
Bracket Blower
Plug-In
Side View
Lower Firebox
Cavity
Blower
Location
FIREPLACE INSTALLATION
Check Gas Type
Installing Optional Blower Accessories
Duplex Outlet
(Located underneath
firebox floor against
lower right outside wall)
3. Place the blower against the lower rear wall of the firebox outer
wrapper with the exhaust port directed upward. The blower
will fit inside the back opening and be held in position against
the back wall by the magnets (see Figure 25).
4. Be certain that all wire terminals are securely attached to ter-
minals on blower motor and that the screw retaining the green
ground wire is tight.
5. Mount speedcontrolbox toswitchbracket byplacingthe plastic
control shaft forward through the round opening in the 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 previously turned off per the
warning in column 1.
8. Plug in blower power cord.
a. If your firebox is installed as a freestanding unit with an
accessory mantel, determine whether the power cord will
exit the left side or the right side of the firebox. Route power
cord through exit hole and plug the power cord into a wall
receptacle near the firebox.
b.If your firebox installation is recessed and/or pre-wired,
plug the power cord into the duplex outlet provided. Refer
to your firebox owner’s manual for instructions on wiring
the duplex outlet.
CAUTION: Never touch the blower wheel while in
operation.

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9. Check to make sure that the power cord is completely clear of the
blowerwheel andthatthereare nootherforeign objectsinblower
wheel. Turn blower on and check for operation. Turn blower off
by turning knob fully counterclockwise before continuing.
10. Peel off the backing paper and stick the supplied wiring dia-
gram decal on the firebox bottom approximately 12" in front
of the blower (see Figure 27).
Variable
FanSwitch
White
WhiteBlack
Green
On
110/115
V.A.C.
Blower
Motor
Black
Black
Black
Off
Figure 27 - Location of Wiring Diagram Decal (Model May Vary
From Illustration)
Wiring Diagram Decal
12" in Front of Blower
FIREPLACE INSTALLATION
Installing Optional Blower Accessories (Cont.)
FIREPLACE INSTALLATION
Continued
Thermodisc
Figure 28 - Blower Model BKT
Air Flow Direction
Route BKT
Blower Through
This Area
Magnets
Blower
Location
Side View Firebox Bottom
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
Model BKT Installation
Note: WheninstallingtheBKTthermostatically-controlledblower,
you must first secure the thermal switch bracket to the blower if it
has not already been factory installed.
1. Place the green ground wire with ring terminal between the
bottom hole on the thermal switch bracket and the top ear hole
on the blower assembly. Insert the phillips screw into all three
pieces and tighten securely (see Figure 28).
2. Connect wire harness and power cord terminals. Connect the
blue jumper wire to the blower motor terminal and the right
side terminal of the thermal switch. Connect the black wire to
the left side of the thermal switch and the white wire to the
other remaining blower motor terminal.
Note: The 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 the blower against the lower rear wall of the firebox outer
wrapperwiththeexhaustport directed upwardand thethermodisc
positioned up near the fireplace bottom.The thermodisc must be
oriented near thefireplace bottom asshown in Figure28 in order
to sense temperature and properly operate. The blower will be
held in position against the back wall by the magnets incorpo-
rated onto the blower housing (see Figure 28).
4. Be certain that all wire terminals are securely attached to ter-
minals on blower motor and thermal switch, and that the screw
for the thermodisc bracket and green ground wire is tight.
5. Mount the speed control box against the mounting plate pro-
vided in the lower fireplace cavity by placing the plastic control
shaft forward through the round hole (see Figure 26, page 17).
6. While supporting speed control, secure control shaft with lock
nut by pushing and turning lock nut with pliers clockwise un-
til it is tight against mounting plate. Place control knob pro-
vided on shaft (see Figure 26, page 17).
7. Check to make sure that the power cord is completely clear of the
blower wheel and that there are no other foreign objects 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 the
warning in column 1, page 17.
9. Plug in blower power cord to duplex outlet.
10. The blower will only run when the speed control knob is in the
ON position and the thermal switch senses temperature after the
fireplace begins to heat up. The blower speed can be adjusted by
rotating the control knob. To turn off, turn knob fully counter-
clockwise until it clicks off. If the blower is ON and has been
running with the fireplace operating, the blower will continue to
run for a short time after the fireplace has been turned off.As the
thermalswitchcools down,theblowershutsdown automatically.
11. Peel off the backing paper and stick the supplied wiring dia-
gram decal on the firebox bottom approximately 12" in front
of the blower (see Figure 27).

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19
FIREPLACE INSTALLATION
Continued
FIREPLACE INSTALLATION
Installing Optional Blower Accessories (Cont.)
Installing Gas Piping to Fireplace Location
Figure 29 - Blower Wiring Diagram for Thermostat-Controlled
Models
Blower Wiring Diagram
CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper and dangerous operation. Verify proper
operation after servicing.
Blue
Variable
Fan Switch Fan Switch
(N.O.)
Green
White
On
110/115
V.A.C.
Blower
Motor
Black
Off
12
Black
INSTALLING GAS PIPING TO FIREPLACE
LOCATION
Installation Items Needed
Beforeinstallingfireplace,makesureyouhavetheitemslistedbelow.
• 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 flexible gas line with gas connector (if allowed by lo-
cal codes)
* ACSAdesign-certifiedequipmentshutoffvalvewith1/8"NPTtap
is an acceptable alternative to test gauge connection. Purchase the
CSA design-certified equipment shutoff valve from your retailer.
WARNING: A qualified service person must con-
nect fireplace 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 fireplace
and propane/LP supply.
Figure 30 - External Regulator with Vent Pointing Down
(Propane/LP Only)
Propane/LP
Supply Tank
External
Regulator
Vent
Pointing
Down
For propane/LP connection only, the installer must supply an
external regulator. The external regulator will reduce incoming gas
pressure.Youmustreduceincominggaspressuretobetween11and
14 inches of water. If you do not reduce incoming gas pressure,
fireplace regulator damage could occur. Install external regulator
withtheventpointingdownasshowninFigure30.Pointingthevent
down protects it from freezing rain or sleet.
Installation must include an equipment shutoff valve, union, and
plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge
hook up. NPT tap must be upstream from fireplace (see Figure 31,
page 20).
IMPORTANT: Install maingas valve(equipment shutoffvalve) in
an accessible location. The main gas valve is for turning on or
shutting off the gas to the appliance.
Checkyourbuildingcodesforanyspecialrequirementsforlocating
equipment shutoff valve to fireplaces.
Apply pipe joint sealant lightly to male NPT threads. This will
prevent excess sealant from going into pipe. Excess sealant in pipe
could result in clogged fireplace valves.
CAUTION: Use only new, black iron or steel pipe.
Internally-tinned copper tubing may be used in cer-
tain areas. Check your local codes. Use pipe of 1/2"
insidediameterorgreatertoallowpropergasvolume
tofireplace. Ifpipe istoosmall,unduelossofvolume
will occur.
WARNING:Usepipejointsealantthatisresistant
to liquid petroleum (LP) gas.

111906-01A
For more information, visit www.desatech.com
For more information, visit www.desatech.com
20
Pressure Testing Gas Supply Piping System
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect fireplaceandits individualequipment shutoffvalve
from gas supply piping system. Pressures in excess of 1/2 psig
(3.5 kPa) will damage fireplace gas regulator.
2. Cap off open end of gas pipe where equipment shutoff valve
was connected.
3. Pressurize supply piping system by either opening propane/LP
supplytank valvefor propane/LPgas fireplaceoropening main
gas valve located on or near gas meter for natural gas fire-
place, or using compressed air.
4. Check all joints of gas supply piping system.Apply noncorro-
sive leak detection fluid to all joints. Bubbles forming show a
leak. Correct all leaks at once.
5. Reconnect fireplace and equipment shutoff valve to gas sup-
ply. Check reconnected fittings for leaks.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and connections,
internal and external to unit, for leaks after installing
or servicing. Correct all leaks at once.
WARNING: Never use an open flame to check for
a leak. Apply noncorrosive leak detection fluid to all
joints.Bubblesformingshowaleak.Correctallleaks
at once.
FIREPLACE INSTALLATION
Continued
We recommend that you install a sediment trap/drip leg in supply
line as shown in Figure 31. Locate sediment trap/drip leg where it
is within reach for cleaning. Install in piping system between fuel
supply and fireplace. Locate sediment trap/drip leg where trapped
matter is not likely to freeze. A sediment trap traps moisture and
contaminants. This keeps them from going into fireplace gas con-
trols. If sediment trap/drip leg is not installed or is installed wrong,
fireplace may not run properly.
FIREPLACE INSTALLATION
Installing Gas Piping to Fireplace Location (Cont.)
Connecting Fireplace to Gas Supply
Checking Gas Connections
Figure 31 - Gas Connection
CSA Design-Certified
Equipment Shutoff Valve
with 1/8" NPT Tap*
3" Minimum
Approved Flexible
Gas Line
Cap Pipe Nipple Tee Joint
Sediment Trap/Drip Leg
Natural - From
Gas Meter (5.5"
W.C. to 10.5"
W.C. Pressure)
Propane/LP
From External
Regulator (11"
W.C. to 14"
W.C. Pressure)
* The CSA design-certified equipment shutoff valve may be sup-
plied with the appliance or you can purchase it from your retailer.
CONNECTING FIREPLACE TO GAS SUPPLY
Installation Items Needed
• 5/16" hex socket wrench or nut-driver
• sealant (resistant to propane/LP gas, not provided)
1. Open lower louver door panel by gently pulling forward.
2. Route flexible gas line (provided by installer) from equipment
shutoffvalveto fireplace.Routeflexible gassupplyline through
one of the access holes on side of fireplace.
3. Attach flexible gas line from gas supply to control valve (see
Figure 32).
4. Check all gas connections for leaks. See Checking Gas
Connections.
Figure 32 - Connecting Flexible Gas Line to Millivolt Valve
Flexible Gas Line
Do NOT Kink
Equipment Shutoff Valve
To Gas Supply
(Natural)
To External Regulator
(Propane/LP)
Control Valve