Desa CDVBNA, CDVBPA User Manual
CAST IRON STOVE AND DIRECT-VENT
(FREESTANDING FIREPLACE HEATER)
BURNER SYSTEM
OWNER’S OPERATION AND INSTALLATION MANUAL
NATURAL GAS BURNER SYSTEM MODEL CDVBN(A),
PROPANE/LP GAS BURNER SYSTEM MODEL CDVBP(A)
REMOTE READY
IMPORTANT: This direct-vent burner system must be installed into approved Comfort Glow cast
iron stove bodies, models CISGA series and CISCA series ONLY. See page 3 of this manual.
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
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.
This appliance may be installed in an aftermarket* manufactured (mobile) home,
where not prohibited by state or local codes.
WARNING: Improper installation,
adjustment, alteration, service, or
maintenance can cause injury or
property damage. Refer to this
manual for correct installation and
operational procedures. For assistance or additional information
consult a qualified installer, service agency, or the gas supplier.
— 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. This appliance is
not convertible 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.
CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
SAFETY
INFORMATION
WARNINGS
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, operate, or service this stove and
burner system. Improper use of
this stove and burner system can
cause serious injury or death
from burns, fire, explosions,
electrical shock, and carbon
monoxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
This stove with burner system is a vented
product. This stove with burner system will
not produce any gas leakage into your home
if properly installed. This stove with burner
system must be properly installed by a qualified service person. The glass door must be
properly seated and sealed. If this unit is not
properly installed by a qualified service
person with glass door properly seated and
sealed, gas leakage can occur.
Carbon Monoxide Poisoning: Early signs of
carbon monoxide poisoning resemble the flu,
with headaches, dizziness, or nausea. If you
have these signs, the stove with burner system
may not have been installed properly. Get
fresh air at once! Have stove with burner
system 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 influence of alcohol, and those at high altitudes.
Propane/LP gas and natural gas are both
odorless. An odor-making agent is added to
each of these gases. The odor helps you
detect a gas leak. However, the odor added
to these gases 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 stove and burner system.
WARNING: Any change to
this stove or burner system or its
controls can be dangerous.
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 burner system, do not
place propane/LP supply tank(s) inside
any structure. Locate propane/LP supply tank(s) outdoors. T o prevent performance problems, do not use propane/LP
fuel tank of less than 100 lbs. capacity.
3. If you smell gas
• shut of f 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 stove
• in a recreational vehicle
• where curtains, furniture, clothing, or
other flammable objects are less than
42" from the front, top, or sides of
the stove
• in high traf fic areas
• in windy or drafty areas
5. This stove reaches high temperatures.
Keep children and adults away from hot
surfaces to avoid burns or clothing ignition. Stove will remain hot for a time
after shutdown. Allow surfaces to cool
before touching.
6. Carefully supervise young children
when they are in the room with stove.
7. Do not modify the burner or stove under
any circumstances. Any parts removed for
servicing must be replaced prior to operating stove or burner system.
8. Turn burner system off and let cool
before servicing, installing, or repairing. Only a qualified service person
should install, service, or repair the
stove or burner system. Have burner
system inspected annually by a qualified service person.
9. You must keep control compartments,
burners, and circulating air passages
clean. More frequent cleaning may be
needed due to excessive lint and dust from
carpeting, bedding material, pet hair, etc.
Turn off the gas valve and pilot light before cleaning stove or burner system.
10. Have venting system inspected annually by a qualified service person. If
needed, have venting system cleaned
or repaired. See Cleaning and Mainte-
nance, page 26.
11. Keep the area around your stove clear
of combustible materials, gasoline, and
other flammable vapor and liquids. Do
not run burner system where these are
used or stored. Do not place items such
as clothing or decorations on or around
stove.
12. Do not use this stove to cook food or
burn paper or other objects.
13. Never place anything on top of stove.
14. Do not use any solid fuels (wood, coal,
paper, cardboard, etc.) in this stove. Use
only the gas type indicated on burner
system nameplate.
15. This appliance, when installed, must be
electrically grounded in accordance
with local codes or, in the absence of
local codes, with the National Electri-
cal Code, ANS/NFPA 70, or the Canadian Electrical Code, CSA C22.1.
16. Do not obstruct the flow of combustion and ventilation air in any way . Provide adequate clearances around air
openings into the combustion chamber
along with adequate accessibility clearance for servicing and proper operation.
17. Do not install stove directly on carpeting, vinyl tile, or any combustible material other than wood. The stove must set
on a metal or wood panel extending the
full width and depth of the stove.
18. Do not use stove or burner system if
any part has been exposed to or under
water. Immediately call a qualified ser vice person to arrange for replacement
of the unit.
19. Do not operate burner system if an y
log is broken.
20. Do not use a blower insert, heat exchanger insert, or other accessory not
approved for use with this stove.
21 . Do not operate burner system with glass
door removed, cracked, or broken.
2
105501
OWNER’S MANUAL
PRODUCT
IDENTIFICATION
Cast Iron
Stove Body
Log Set
ON/OFF
Switch
ON
OFF
AUTO
Piezo Ignitor
Cast Iron
Stove Body
O
H
L
I
OFF
ON
Control Valve
LOCAL CODES
Install and use stove and burner system with
care. Follow all local codes. In the absence
to local codes, use the current National Fuel
Gas Code ANS Z223.1, also known as
NFPA 54* (USA) or the current CAN/CGA-
B149[.1 or .2] Installation Codes (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
FEATURES
OPERATION
This cast iron stove with burner system is
clean burning and vents easily through outside walls or vertically using outside air for
combustion. Heat is generated by both realistic flames and glowing embers. When
used without the blower accessory, the stove
with burner system requires no electricity
making it ideal for emergency backup heat.
PIEZO IGNITOR
Vent
Opening
Rear Cover
Pilot Assy
Blower with
Adjustment
(Optional
Installation)
Glowing Embers
Figure 1 - Comfort Glow Direct-Vent Burner System Shown Installed in Approved
Comfort Glow Cast Iron Stove Body Models CISGA Series and CISCA Series Only
Burner
Glass Door
Assy
Lava Rock
Grate Assembly
This burner system has a piezo ignitor. This
system requires no matches, batteries, or
other sources to light burner system.
GLOSSARY OF
TERMS
Chase - A boxlike enclosure to protect
venting from the elements when the venting
run is on the outside of a structure.
Mastic - A pliable sealant for use around the
vent terminal.
Snorkel Termination - A box that raises the
horizontal termination above ground level
clearances.
Vent Terminal - Mounted on an outside
wall or roof to separate the inlet and outlet of
the vent system and protect it from weather.
Vinyl Siding Standoff - A metal box that
separates the vent cap from vinyl siding.
Wall Thimble/Firestop - A metal plate used
to secure the vent pipe when it passes through
a wall or ceiling.
105501
3
CDVBN(A) AND CDVBP(A)
29"
Must contain
a minimum
of 1" clearance
to combustibles
CAST IRON STOVE AND BURNER SYSTEM
PRE-INSTALLATION
PREPARATION
WARNING: A qualified service person must install stove
and burner system. Follow all local codes.
CAUTION: This stove creates
warm air currents. These currents
move heat to wall surfaces next
to stove. Installing stove next to
vinyl or cloth wall coverings or
operating stove where impurities
(such as tobacco smoke, aromatic candles, cleaning fluids,
oil or kerosene lamps, etc.) in the
air exist, may discolor walls.
LOCATION AND SPACE
REQUIREMENTS
Determine the safest and most efficient location for your Comfort Glow cast iron stove.
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. Read all venting information in this
manual. Be aware of all restrictions and precautions before deciding the exact location
for your stove.
When deciding the location of your stove,
follow these rules:
1. Do not connect this stove and burner
system to a chimney flue serving a
separate solid-fuel burning fireplace or
appliance.
2. Due to high temperatures, do not locate this stove in high traffic areas or
near furniture or draperies.
3. Proper clearances must be maintained,
see Figure 3 and Figure 4 on page 5.
4. This stove is a freestanding unit designed to set directly on the floor. If
your stove 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
stove. See Figure 5, page 5.
On Wall with
Horizontal Termination
On Wall with Vertical
Termination Through
Ceiling
Figure 2 - Common Stove Locations
Ceiling
42"
36"
from
Front
Floor
Figure 3 - Clearances for Standard Installation
Corner Installation
4"
Back
Wall
6
"
Front
4
"
4
105501
OWNER’S MANUAL
PRE-INSTALLATION
PREPARATION
Continued
4"
Figure 4 - Clearance for Corner Installation
25"
Front
25 5/8"
4"
CAST IRON STOVE
AND DIRECT-VENT
BURNER SYSTEM
ASSEMBLY
STOVE BODY ASSEMBLY
1. Lift off corrugated box enclosing stove
body crating.
2. Remove all screws fastening the wood
frame enclosure. Spread wood frame open
and lift away from plastic-bagged stove
body. The bottom pieces of pallet wood
will remain bolted to the stove body .
3. Remove plastic bag from stove body.
4. Remove back panel from stove (see
Figure 6). Use an adjustable wrench or
a 10 mm socket. Remove six (6) bolts
and washers. Keep bolts and washers
to reattach back panel later.
5. Remove all contents from inside stove
cavity . Contents include:
(1) - Stove bottom
(4) - Legs with leg leveler bolts
(1) - Bottom door
(1) - Top grate
(1) - Hardware kit bag with fasteners
6. Carefully lay stove body on back to attach
bottom components to stove body (see
Figure 7). Rest stove on drop cloth or blanket to avoid scratching stove edges.
7. Remove remaining pallet wood attached to bottom of stove body (see
Figure 8). Use an adjustable wrench to
remove bolts.
Bolt
Figure 8 - Removing Pallet Wood from the
Bottom of the Stove
Door Hinge Step
Bolt Hole
Leg
Hole
Front
Pallet Wood
Front
Pallet
Wood
Bottom Of
Stove Unit
Door Catch Bolt
With Adjustable
Hex Nuts Hole
Leg
Hole
Figure 5 - Stove with Burner System
Bottom Dimensions
Bolt
Back
Stove
Panel
Figure 6 - Removing Back Panel
Front of
Stove
Unit
Drop
Cloth/
Blanket
Figure 7 - Laying Stove On Side
Product
Identification
Label
Top of Stove Unit
Pallet
Wood
Bolted to
Bottom of
Stove
Body
Stove
Bottom
Hole
Leg Hole
Bottom Of
Stove Unit
Figure 9 - Locating Threaded Holes for
Stove Bottom, Legs, and Door Attachment
Front of
Stove Unit
Top of
Stove
Unit
Continued
105501
5
CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
CAST IRON STOVE
AND DIRECT-VENT
BURNER SYSTEM
ASSEMBLY
Continued
8. Fasten each leg to stove with four (4)
M8 x 1.25 - 20mm bolts. Use a flat
washer and lock washer with each bolt.
Tighten bolts into threaded holes on
stove body (see Figure 9, page 5 and
Figure 10). Use an adjustable wrench
or a 12mm socket.
9. Fasten stove bottom to stove with four
(4) M6 x 1 - 25mm bolts. Use a flat
washer and lock washer with each bolt.
Tighten bolts into threaded holes on
stove body (see Figure 9, page 5 and
Figure 10). Use an adjustable wrench
or a 10mm socket.
10. Attach stove door by inserting step bolt
through door hinge pivot hole and into
threaded hole in stove body (see Figure
9, page 5 and Figure 10). Use an adjustable wrench or a 12mm socket to fasten
step bolt. Tighten step bolt until snug.
Make sure door moves freely.
11. Install door catch bolt (M8 x 1.2555mm with two M8 hex nuts) into
threaded hole on stove body (see Figure 9, page 5). Use an adjustable
wrench or a 12mm socket. The catch
bolt has two hex nuts attached to it
(see Figure 13). The top nut is a bolt
stop and the bottom nut is for door
leveling adjustment.
12. Check general catch bolt alignment
with door claw. Make final adjustment
and door leveling after stove is in normal standing position.
13. Carefully lift stove back up on its four
attached legs.
14. Set top grate into stove top.
Bolt Stop
Adjusting Nut
Door Claw
Catch Bolt
Door
Figure 13 - Catch Bolt and Door Claw
Orientation
INSTALLING DIRECT-VENT
BURNER SYSTEM INTO
STOVE BODY
1. Carefully lift burner system and place
into stove body from the rear of stove.
2. Using screws provided, attach burner
system to back of stove.
Burner
System
Screw
Bolt
Bottom Of
Stove Unit
Leg
Figure 10 - Attaching Stove Legs
Washers
Bolt
Stove Bottom
Bottom Of
Stove Unit
Figure 11 - Attaching Stove Bottom
Stove
Door
Door
Hinge
Step
Bolt
Bolt
Shoulder
Threaded
Hole
Stove Bottom
Figure 12 - Attaching Stove Door
Cast Iron
Stove Body
O
L
H
I
P
I
OFF
L
O
ON
T
Figure 14 - Installing Burner System Into
Cast Iron Stove Body
6
105501
OWNER’S MANUAL
CAST IRON STOVE
AND DIRECT-VENT
BURNER SYSTEM
ASSEMBLY
Continued
INSTALLING OPTIONAL
BLOWER ACCESSORY
NOTICE: If installing blower in an
existing stove with burner system with gas connections, shut
off gas supply and disconnect
burner system from gas supply.
Contact a qualified service person to do this.
Attaching Thermal Switch to
CDA3620T ThermostaticallyControlled Blower
When installing the CDA3620T thermostatically-controlled blower accessory, you must
first secure the thermal switch to the blower.
1. Remove the two hex head screws on the
blower assembly as shown in Figure 15.
2. Place the green wire between the bottom hole on the thermal switch bracket
and the bottom hole on the blower assembly. Insert one of the hex screws
into all three pieces and tighten.
3. Insert the top screw through the thermal switch bracket and into the blower
assembly. T ighten screw.
4. Connect the blue wire on the blower
assembly to the right side of the thermal switch.
5. Connect the black wire to the left side
of the thermal switch.
Black
Wire
Thermal
Switch
with
Bracket
Figure 15 - Attaching Thermal Switch to
CDA3620T Thermostatically-Controlled
Blower Accessory
105501
White Wire
Green
Wire
Blue Wire
Hex Head
Screws
Blower
Assembly
Installing GA3750/CDA3620T
Blowers
1. Align the holes in the top mounting tabs
of blower with holes in wall of rear
cover (see Figure 16). Using the 4
screws provided, mount blower and
tighten screws securely.
Note:
For CDA3620T, make sure the ther mal switch has been properly installed to
fit against the back of the burner system.
2. Make sure all wire connections to terminals on blower motor (and thermal
switch where applicable) are securely
attached and that the screw retaining the
WARNING: Never touch the
blower wheel while in operation.
7. Peel off the backing paper and stick the
supplied wiring diagram decal on the
inside of rear cover on right side opposite control.
WARNING: Failure to position
the parts in accordance with supplied diagrams or failure to use
only parts specifically approved
with this stove and burner system may result in damage or personal injury.
green ground wire is tight.
3. Place speed control on back wall inside
of rear cover and push the plastic control shaft through opening (see Figure
16).
4. While supporting speed control, secure
control shaft with lock nut by pushing and
turning lock nut with pliers clockwise
until tight against the side of rear cover.
8. Connect or reconnect gas supply to
stove and burner system per Connect-
ing Stove/Burner System to Gas Supply on page 19 of this manual.
WARNING: A qualified service person must connect burner
system to gas supply. Follow all
local codes.
Place control knob provided onto shaft
(see Figure 16).
5. Plug in blower power cord.
6. 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. Turn blower on
and check for operation. Turn blower
off by rotating knob fully counterclockwise before continuing.
Blower
Control Knob
Lock
Nut
Black
Wire
White
Wire
Blue
Wire
Figure 16 - Installing Optional Blower Accessory (Thermostat Model CDA3610T
Shown)
Green
Ground Wire
Speed Control
Control Shaft
Power Cord
Mounting Screws
(Included in
Hardware Pack)
Wiring
Diagram
Decal
Rear Cover
Blower
Continued
7
CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
CAST IRON STOVE
AND DIRECT-VENT
BURNER SYSTEM
ASSEMBLY
Continued
INSTALLING REAR COVER
1. Lift rear panel over vent pipe connection on burner system. Rear cover will
rest on the bottom ledge of the stove
body.
2. Using screws provided, attach rear
cover to back of stove body. See Figure 17.
IMPORTANT:
securely in place before venting pipes
are installed.
This rear cover must be
Rear
Cover
GENERAL VENTING
These models are approved for use with
Simpson Dura-Vent 6 5/8" direct-vent pipe
components and terminations as well as
both flex and rigid Comfort Glow vent components.
Your stove with burner system is approved
to be vented either through the side wall, or
vertically using the following guidelines:
• Only use Comfort Glow or Simpson DuraVent GS venting components or kits specifically approved for this stove and
burner system.
• Minimum clearance between vent pipes
and combustible materials is 1" (25 mm),
except where stated otherwise.
Screw
• Do not recess venting terminals into a
wall or siding.
• Install horizontal venting with a 1/4" rise for
every 12" of run toward the termination.
• You may paint the vent terminal 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
termination area.
• You must maintain minimum wall and
ceiling clearances shown in Figures 3 and
4, pages 4 and 5.
LOCATION OF VENT
TERMINATION
When locating vent termination, it is important to observe the minimum clearances
shown in Figure 18, page 9.
*Check with local codes or with the current
CAN/CGA B149[.1 or .2] Installation Codes
for Canada or the USA Installations follow
the current National Fuel Gas Code, ANS
Z223.1, also known as NFPA 54.
Figure 17 - Installing Rear Cover
Firebox
Installed In Cast
Iron Stove Body
8
105501
OWNER’S MANUAL
GENERAL VENTING
D
E
V
B
L
V
A = clearance above grade, veranda, porch, deck, or balcony
[*12 inches (305mm) minimum]
B = clearance to window or door that may be opened
[12 inches (305mm) minimum]
C = clearance to permanently closed window [minimum 12 inches
(305mm) recommended to prevent condensation on window]
D = vertical clearance to ventilated soffit located above the terminal
within a horizontal distance of 24 inches (610mm) from the
center-line of the terminal [18 inches (457mm) minimum]
E = clearance to unventilated soffit [12 inches (305mm) 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 (914mm) horizontally from the center-line of the regulator
† 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/SGA B149 (.1 or .2) Installation Codes (1991) for Canada or for U.S.A. installation follow
the current
Note: Local codes or regulations may require different clearances
C
F
V
B
TERMINATION CAP
National Fuel Gas Code, ANS Z223.1
Continued
Fixed
Closed
Openable
V
Openable
B
AIR SUPPLY INLET
X
B
Fixed
Closed
J
V
A
X
I = clearance to service regulator vent outlet [*72 inches (1829mm)
minimum]
J = clearance to non-mechanical air supply inlet to building or the
combustion air inlet to any other fireplace [*12 inches (305mm)
minimum]
K = clearance to a mechanical air supply inlet [*72 inches (1829mm)
minimum]
L = † clearance above paved side-walk or a paved driveway located on
public property [*84 inches (2133mm) minimum]
M = clearance under veranda, porch, deck [*12 inches (305mm) minimum ‡]
N = clearance above a roof shall extend a minimum of 24 inches (610mm)
above the highest point when it passes through the roof surface and
any other obstruction within a horizontal distance of 18 inches (457mm)
Termination Clearances for Buildings with Combustible and Noncombustible Exteriors
Inside Corner
Outside Corner Recessed Location
N
H
V
B
G
G
GAS METER RESTRICTED AREA
I
M
V
(TERMINATION PROHIBITED)
N
G
V
G
X
K
V
A
A
Balcony with No Side Wall
G = Combustible 24" (610mm)
Noncombustible 18" (457mm)
V
G
V
A = 6" (152mm)
V
B
Balcony with Perpendicular Side Wall
H
V
Combustible &
Noncombustible
H = 24" (610mm)
J = 20" (508mm)
Figure 18 - Minimum Clearances for Vent Terminations
105501
B = 6" (152mm)
J
9
D
C
V
C = Maximum depth of 48" (1219mm) for
recessed location
D = Minimum width for back wall of
recessed location Combustible - 38" (965mm)
Noncombustible - 24" (610mm)
E = Clearance from corner in
recessed locationCombustible - 6" (152mm)
Noncombustible - 2" (51mm)
C
E
CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
VENTING
INSTALLATION
WARNING: Read all instructions completely and thoroughly
before attempting installation.
Failure to do so could result in
serious injury, property damage
or loss of life. Operation of improperly installed and maintained
venting system could result in
serious injury, property damage
or loss of life.
WARNING: Seal all vent connections. Seal only the outer pipe
connections with high temperature
silicone (600°F/316° C). Before joining elbows and pipes, apply a bead
of high temperature silicone sealant (GE RTV 106/Loctite RTV 81585)
to the male end of the elbow or
pipe. High temperature silicone
must also be used to re-seal any
connections after maintenance to
venting system.
NOTICE: Failure to follow these
instructions will void the warranty.
INSTALLATION
PRECAUTIONS
Consult local building codes before beginning the installation. The installer must
make sure to select the proper vent system
for installation. Before installing vent kit,
the installer must read this stove and burner
system manual and vent kit instructions.
Only a qualified service person should install venting system. The installer must follow these safety rules:
• 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 modification of the venting system
• Installation of any component part not
manufactured or approved by DESA
International
• Installation other than as instructed by
these instructions
WARNING: This stove with
burner system and vent assembly
must be vented directly to the outside. The venting system must
NEVER be attached to a chimney
serving a separate solid fuel burning appliance. Each gas appliance
must use a separate vent system.
Do not use common vent systems.
WARNING: Horizontal sections of this vent system require
a minimum clearance of 2" from
the top of the pipe and 1" minimum to the sides and bottom.
Vertical sections of this system
require a minimum of 1" clearance to combustible materials on
all sides of the pipe.
INSTALLATION PLANNING
There are two basic types of direct-vent
installation:
• Horizontal Termination
• Vertical Termination
It is important to select the proper length
of vent pipe for the type of termination
you choose. It is also important to note the
wall thickness.
For Horizontal Termination: Select the
amount of vertical rise desired. The horizontal run of venting must have 1/4" rise for
every 12" of run towards the termination.
WARNING: Never run the vent
pipe downward as this may cause
excessive temperatures which
could cause a fire.
You may use one or two 90° elbows in this
vent configuration. See Horizontal Termina-
tion Configurations on pages 13 and 14.
For Vertical Termination: Measure the dis-
tance from the burner system flue outlet to
the ceiling. Add the ceiling thickness, the
vertical rise in an attic or second story, and
allow for sufficient vent height above the
roofline. You may use one or two 90° elbows
in this vent configuration. See Vertical Ter-
mination Configurations on pages 16 and 17.
Note:
You may use two 45° elbows in place
of a 90° elbow. You must follow rise to run
ratios when using 45° elbows.
For two-story applications, firestops are required at each floor level. If an offset is needed
in the attic, additional pipe and elbows will be
required (see Figure 31, page 15).
You may use a chase with a vent termination with exposed pipe on the exterior of
the house. See Installing Vent System in a
Chase, below.
Your Comfort Glow stove with direct-vent
burner system has been tested for a maximum 17" wall thickness when using a 60º
elbow directly off the back of the stove. The
maximum horizontal run is 20' with 8' vertical rise (see Installation for Horizontal
Termination, pages 11 and 12). The maximum vertical run is 30' (see Installation for
Vertical Termination, pages 14 and 15).
It is very important that the venting system
maintain its balance between the combustion air intake and the flue gas exhaust.
Certain limitations apply to vent configurations and must be strictly followed.
Installing Vent System in a Chase
A chase is a vertical boxlike structure built
to enclose venting that runs along the outside of a building. A chase is not required for
such venting.
NOTICE: Treatment of firestops
and construction of the chase
may vary from building type to
building type. These instructions
are not substitutes for the requirements of local building
codes. You must follow all local
building codes.
Note:
When installing in a chase, you should
insulate the chase as you would the outside
walls of your home. This is especially important in cold climates. Minimum clearance between vent pipes and combustible
materials such as insulation is 1".
10
105501
OWNER’S MANUAL
VENTING
INSTALLATION
Continued
INSTALLATION FOR
HORIZONTAL TERMINATION
1. Determine the route your horizontal
venting will take.
of the horizontal vent termination on
the exterior wall must meet all local and
national building codes and must not
be easily blocked or obstructed.
WARNING: Do not recess vent
terminal into a wall or siding.
Snorkel terminations are available for
terminations requiring a vertical rise on
the exterior of the building (see Figures
19 and 20). Snorkel kit SVKBK is also
available (see page 17). Follow the same
installation procedures used for standard
horizontal terminations. If installing the
snorkel termination below grade (basement applications), you must provide
proper drainage to prevent water from
entering the snorkel termination (see
Figure 20). Do not back fill around the
snorkel termination.
2. Rigid vent pipes and fittings have special twist-lock connections. Assemble
the desired combination of pipe and elbows to the appliance adaptor with pipe
seams oriented towards the wall or floor.
Twist-lock Procedure: The female ends
of the pipes and fittings have four locking
lugs (indentations). These lugs will slide
straight into matching slots on the male ends
of adjacent pipes and fittings. (All connections must be sealed with high temperature silicone sealant as specified in the second warning statement on page 10.) Push
the pipe sections together and twist one section clockwise approximately one-quarter
turn until the sections are fully locked. See
Figure 21, page 12.
of vent must be supported every three feet.
Use wall straps for this purpose.
Note:
The location
Note:
Horizontal runs
Snorkel
12" Minimum
Figure 19 - Snorkel Termination
Snorkel
12" Minimum
Adequate
drainage
105501
Figure 20 - Snorkel Termination with Drainage Pipe
Continued
11
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