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: Improper installation,
adjustment,alteration,service,or
maintenance can cause injury or
property damage. Refer to this
manualforcorrectinstallationand
operational procedures. For as-
sistanceoradditionalinformation
consult a qualified installer, ser-
vice agency, or the gas supplier.
WARNING: If the information in this manual is not
followedexactly, afireorexplosionmayresultcaus-
ing 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
— Installationandservicemust
be performed by a qualified in-
staller, service agency, or the
gas supplier.
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 in-
structions.
—
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,unlessacertifiedkitisused.
• 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.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer.
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OWNER’S MANUAL
PRODUCT
LOCAL CODES
Installandusestoveandburnersystemwith
care. Follow all local codes. In the absence
to local codes, use the current National Fuel
Gas Code ANS Z223.1, also known as
NFPA54*(USA)orthecurrentCAN/CGA-
B149[.1or.2] InstallationCodes(Canada).
IDENTIFICATION
Cast Iron
Stove Body
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Log Set
Quincy, MA 02269
PRODUCT
FEATURES
ON
OFF
AUTO
OPERATION
This cast iron stove with burner system is
clean burning and vents easily through out-
side walls or vertically using outside air for
combustion. Heat is generated by both real-
istic flames and glowing embers. When
usedwithoutthebloweraccessory,thestove
with burner system requires no electricity
making it ideal for emergency backup heat.
ON/OFF
Switch
Piezo Ignitor
Control Valve
Cast Iron
Stove Body
PIEZO IGNITOR
This burner system has a piezo ignitor. This
system requires no matches, batteries, or
other sources to light burner system.
Vent
Opening
GLOSSARY OF
TERMS
Rear Cover
Pilot Assy
Burner
Glass Door
Chase - A boxlike enclosure to protect
venting from the elements when the venting
run is on the outside of a structure.
Blower with
Adjustment
(Optional
Assy
Lava Rock
Mastic -Apliablesealantforusearoundthe
Installation)
vent terminal.
SnorkelTermination -Aboxthatraisesthe
horizontal termination above ground level
clearances.
Vent Terminal - Mounted on an outside
wallorrooftoseparatetheinletandoutletof
the vent system and protect it from weather.
Glowing Embers
Vinyl Siding Standoff - A metal box that
separates the vent cap from vinyl siding.
Grate Assembly
WallThimble/Firestop-Ametalplateused
tosecuretheventpipewhenitpassesthrough
a wall or ceiling.
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
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
On Wall with
PRE-INSTALLATION
Horizontal Termination
PREPARATION
WARNING: A qualified ser-
vice person must install stove
and burner system. Follow all lo-
cal codes.
CAUTION: This stove creates
warmaircurrents.Thesecurrents
move heat to wall surfaces next
to stove. Installing stove next to
vinyl or cloth wall coverings or
operatingstovewhereimpurities
(such as tobacco smoke, aro-
matic candles, cleaning fluids,
oil or kerosene lamps, etc.) in the
air exist, may discolor walls.
On Wall with Vertical
Termination Through
Ceiling
Corner Installation
Figure 2 - Common Stove Locations
Ceiling
Must contain
a minimum
of 1" clearance
to combustibles
LOCATION AND SPACE
REQUIREMENTS
42"
Determine the safest and most efficient loca-
tion 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
bydrafts,airconditioningducts,windows,or
doors. Figure 2 shows some common loca-
tions. Read all venting information in this
manual. Be aware of all restrictions and pre-
cautions before deciding the exact location
for your stove.
36"
from
Front
4"
Back
Wall
When deciding the location of your stove,
follow these rules:
29"
Floor
1. Do not connect this stove and burner
system to a chimney flue serving a
separate solid-fuel burning fireplace or
appliance.
4"
2. Due to high temperatures, do not lo-
cate 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.
6
"
4. This stove is a freestanding unit de-
signed 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 ex-
tending the full width and depth of the
stove. See Figure 5, page 5.
Front
Figure 3 - Clearances for Standard Installation
105501
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OWNER’S MANUAL
6. Carefully lay stove body on back to attach
PRE-INSTALLATION CAST IRON STOVE
bottom components to stove body (see
Figure 7). Rest stove on drop cloth or blan-
ket to avoid scratching stove edges.
PREPARATION
AND DIRECT-VENT
BURNER SYSTEM
ASSEMBLY
Continued
7. Remove remaining pallet wood at-
tached to bottom of stove body (see
Figure 8). Use an adjustable wrench to
STOVE BODY ASSEMBLY
remove bolts.
Pallet
1. Lift off corrugated box enclosing stove
body crating.
Wood
Bolt
Front
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.
4"
4"
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.
Pallet Wood
Bottom Of
Stove Unit
Figure8-RemovingPalletWoodfromthe
Bottom of the Stove
Figure4-ClearanceforCornerInstallation
5. Remove all contents from inside stove
cavity. Contents include:
25"
Door Catch Bolt
With Adjustable
Hex Nuts Hole
Bolt Hole
Door Hinge Step
Front
(1) - Stove bottom
(4) - Legs with leg leveler bolts
(1) - Bottom door
Leg
Hole
Leg
Hole
Front
(1) - Top grate
25 5/8
"
(1) - Hardware kit bag with fasteners
Stove
Bottom
Hole
Bolt
Leg Hole
Product
Identification
Label
Figure 5 - Stove with Burner System
Bottom Dimensions
Bottom Of
Stove Unit
Back
Stove
Panel
Figure 9 - Locating Threaded Holes for
StoveBottom,Legs,andDoorAttachment
Figure 6 - Removing Back Panel
Top of Stove Unit
Front of
Stove Unit
Front of
Stove
Unit
Top of
Stove
Unit
Pallet
Drop
Cloth/
Blanket
Wood
Bolted to
Bottom of
Stove
Body
Figure 7 - Laying Stove On Side
Continued
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
10. Attach stove door by inserting step bolt
CAST IRON STOVE
Bolt Stop
through door hinge pivot hole and into
threaded hole in stove body (see Figure
9, page 5 and Figure 10). Use an adjust-
able wrench or a 12mm socket to fasten
step bolt. Tighten step bolt until snug.
Make sure door moves freely.
AND DIRECT-VENT
BURNER SYSTEM
Adjusting Nut
Catch Bolt
Door Claw
Door
ASSEMBLY
Continued
11. Install door catch bolt (M8 x 1.25-
55mm with two M8 hex nuts) into
threaded hole on stove body (see Fig-
ure 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.
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.
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.
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.
12. Check general catch bolt alignment
with door claw. Make final adjustment
and door leveling after stove is in nor-
mal standing position.
2. Using screws provided, attach burner
system to back of stove.
13. Carefully lift stove back up on its four
attached legs.
14. Set top grate into stove top.
Screw
Burner
System
Cast Iron
Stove Body
Stove
Door
Threaded
Hole
L
O
H
I
OF
I
L
O
T
ON
Bolt
Door
Hinge
Bottom Of
Stove Unit
Leg
Figure 10 - Attaching Stove Legs
Step
Bolt
Bolt
Shoulder
Washers
Stove Bottom
Figure 14 - Installing Burner System Into
Cast Iron Stove Body
Figure 12 - Attaching Stove Door
Bolt
Bottom Of
Stove Unit
Stove Bottom
Figure 11 - Attaching Stove Bottom
105501
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OWNER’S MANUAL
Installing GA3750/CDA3620T
Blowers
CAST IRON STOVE
AND DIRECT-VENT
BURNER SYSTEM
WARNING: Never touch the
blower wheel while in operation.
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.
7. Peel off the backing paper and stick the
supplied wiring diagram decal on the
inside of rear cover on right side oppo-
site control.
ASSEMBLY
Continued
Note:ForCDA3620T, makesurethether-
mal switch has been properly installed to
fit against the back of the burner system.
INSTALLING OPTIONAL
BLOWER ACCESSORY
WARNING: Failure to position
the parts in accordance with sup-
plied diagrams or failure to use
only parts specifically approved
with this stove and burner sys-
tem may result in damage or per-
sonal injury.
NOTICE: If installing blower in an
existing stove with burner sys-
tem with gas connections, shut
off gas supply and disconnect
burner system from gas supply.
Contact a qualified service per-
son to do this.
2. Make sure all wire connections to ter-
minals on blower motor (and thermal
switch where applicable) are securely
attached and that the screw retaining the
green ground wire is tight.
8. Connect or reconnect gas supply to
stove and burner system per Connect-
ing Stove/Burner System to Gas Sup-
ply on page 19 of this manual.
3. Place speed control on back wall inside
of rear cover and push the plastic con-
trol shaft through opening (see Figure
16).
Attaching Thermal Switch to
CDA3620T Thermostatically-
Controlled Blower
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.
Place control knob provided onto shaft
(see Figure 16).
WARNING: A qualified ser-
vicepersonmustconnectburner
system to gas supply. Follow all
local codes.
WheninstallingtheCDA3620Tthermostati-
cally-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.
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 ob-
jects in blower wheel. Turn blower on
and check for operation. Turn blower
off by rotating knob fully counterclock-
wise before continuing.
2. Place the green wire between the bot-
tom hole on the thermal switch bracket
and the bottom hole on the blower as-
sembly. Insert one of the hex screws
into all three pieces and tighten.
3. Insert the top screw through the ther-
mal switch bracket and into the blower
assembly. Tighten screw.
Speed Control
Blower
Control Knob
Control Shaft
4. Connect the blue wire on the blower
assembly to the right side of the ther-
mal switch.
Lock
Nut
Power Cord
5. Connect the black wire to the left side
of the thermal switch.
Mounting Screws
(Included in
Hardware Pack)
Black
Wire
Blower
Assembly
White Wire
Black
Wire
Wiring
Diagram
Decal
White
Wire
Thermal
Switch
with
Green
Wire
Blue Wire
Bracket
Hex Head
Screws
Blue
Rear Cover
Green
Ground Wire
Figure 16 - Installing Optional Blower Accessory (Thermostat Model CDA3610T
Shown)
Wire
Figure 15 - Attaching Thermal Switch to
CDA3620T Thermostatically-Controlled
Blower Accessory
Blower
Continued
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
• Do not recess venting terminals into a
CAST IRON STOVE GENERAL VENTING
wall or siding.
These models are approved for use with
AND DIRECT-VENT
• Install horizontal venting with a 1/4" rise for
every 12" of run toward the termination.
Simpson Dura-Vent 6 5/8" direct-vent pipe
components and terminations as well as
bothflexandrigidComfortGlowventcom-
ponents.
BURNER SYSTEM
• You may paint the vent terminal with
450ºF (232ºC) heat-resistant paint to co-
ordinate with the exterior finish.
ASSEMBLY
Continued
Your stove with burner system is approved
to be vented either through the side wall, or
vertically using the following guidelines:
• 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.
INSTALLING REAR COVER
1. Lift rear panel over vent pipe connec-
tion on burner system. Rear cover will
rest on the bottom ledge of the stove
body.
• Only use Comfort Glow or Simpson Dura-
Vent GS venting components or kits spe-
cifically approved for this stove and
burner system.
• Do not locate termination cap where ex-
cessive snow or ice build up may occur.
Be sure to clear vent termination area af-
ter snow falls to prevent accidental block-
age of venting system. When using snow
blowers, do not direct snow towards vent
termination area.
2. Using screws provided, attach rear
cover to back of stove body. See Fig-
ure 17.
• Minimum clearance between vent pipes
and combustible materials is 1" (25 mm),
except where stated otherwise.
IMPORTANT: This rear cover must be
securely in place before venting pipes
are installed.
• You must maintain minimum wall and
ceiling clearances shown in Figures 3 and
4, pages 4 and 5.
LOCATION OF VENT
TERMINATION
Rear
Cover
When locating vent termination, it is impor-
tant to observe the minimum clearances
shown in Figure 18, page 9.
*Check with local codes or with the current
CAN/CGAB149[.1or.2]InstallationCodes
for Canada or the USA Installations follow
the current National Fuel Gas Code, ANS
Z223.1, also known as NFPA 54.
Screw
Firebox
Installed In Cast
Iron Stove Body
Figure 17 - Installing Rear Cover
105501
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OWNER’S MANUAL
GENERAL VENTING Continued
N
N
D
H
E
V
B
L
C
I
B
Fixed
Openable
Fixed
V
V
Closed
Closed
Openable
G
B
F
V
V
G
J
V
A
X
B
B
G
M
V
A
V
X
K
TERMINATION CAP
G
GAS METER
RESTRICTED AREA
(TERMINATION PROHIBITED)
AIR SUPPLY INLET
V
X
A = clearance above grade, veranda, porch, deck, or balcony
[*12 inches (305mm) minimum]
I
= clearance to service regulator vent outlet [*72 inches (1829mm)
minimum]
B = clearance to window or door that may be opened
[12 inches (305mm) 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)
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 National Fuel Gas Code, ANS Z223.1
Note: Local codes or regulations may require different clearances
Termination Clearances for Buildings with Combustible and Noncombustible Exteriors
Inside Corner
Outside Corner
Recessed Location
D
C
C
A
A = 6" (152mm)
E
V
V
V
B = 6" (152mm)
B
Balcony with No Side Wall
Balcony with Perpendicular Side Wall
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 location-
H
V
J
G
V
Combustible &
Noncombustible
H = 24" (610mm)
J = 20" (508mm)
Combustible - 6" (152mm)
Noncombustible - 2" (51mm)
G = Combustible 24" (610mm)
Noncombustible 18" (457mm)
Figure 18 - Minimum Clearances for Vent Terminations
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
• Installation of any component part not roofline.Youmayuseoneortwo90°elbows
VENTING
manufactured or approved by DESA in this vent configuration. See Vertical Ter-
INSTALLATION
International
minationConfigurationsonpages16and17.
• Installation other than as instructed by
these instructions
Note:You may use two 45° elbows in place
of a 90° elbow. You must follow rise to run
ratios when using 45° elbows.
WARNING: Read all instruc-
tions completely and thoroughly
before attempting installation.
Failure to do so could result in
serious injury, property damage
or loss of life. Operation of im-
properlyinstalledandmaintained
venting system could result in
serious injury, property damage
or loss of life.
WARNING: This stove with
burner system and vent assembly
must be vented directly to the out-
side. The venting system must
NEVER be attached to a chimney
serving a separate solid fuel burn-
ing appliance. Each gas appliance
must use a separate vent system.
Donotusecommonventsystems.
For two-story applications, firestops are re-
quiredateachfloorlevel.Ifanoffsetisneeded
in the attic, additional pipe and elbows will be
required (see Figure 31, page 15).
You may use a chase with a vent termina-
tion with exposed pipe on the exterior of
the house. See Installing Vent System in a
Chase, below.
WARNING: Seal all vent con-
nections. Seal only the outer pipe
connectionswithhightemperature
silicone(600°F/316°C).Beforejoin-
ingelbowsandpipes,applyabead
of high temperature silicone seal-
ant(GERTV106/LoctiteRTV81585)
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.
Your Comfort Glow stove with direct-vent
burner system has been tested for a maxi-
mum 17" wall thickness when using a 60º
elbow directly off the back of the stove. The
maximum horizontal run is 20' with 8' ver-
tical rise (see Installation for Horizontal
Termination, pages 11 and 12). The maxi-
mum vertical run is 30' (see Installation for
Vertical Termination, pages 14 and 15).
WARNING: Horizontal sec-
tions of this vent system require
a minimum clearance of 2" from
the top of the pipe and 1" mini-
mum to the sides and bottom.
Vertical sections of this system
require a minimum of 1" clear-
ancetocombustiblematerialson
all sides of the pipe.
It is very important that the venting system
maintain its balance between the combus-
tion air intake and the flue gas exhaust.
Certain limitations apply to vent configura-
tions and must be strictly followed.
INSTALLATION PLANNING
NOTICE: Failure to follow these
instructionswillvoidthewarranty.
There are two basic types of direct-vent
installation:
INSTALLATION
PRECAUTIONS
Installing Vent System in a Chase
• Horizontal Termination
• Vertical Termination
A chase is a vertical boxlike structure built
to enclose venting that runs along the out-
sideofabuilding.Achaseisnotrequiredfor
such venting.
Consult local building codes before begin-
ning 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.
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.
NOTICE: Treatment of firestops
and construction of the chase
may vary from building type to
buildingtype.Theseinstructions
are not substitutes for the re-
quirements of local building
codes. You must follow all local
building codes.
For Horizontal Termination: Select the
amount of vertical rise desired. The horizon-
tal run of venting must have 1/4" rise for
every 12" of run towards the termination.
Only a qualified service person should in-
stall venting system. The installer must fol-
low these safety rules:
• Wear gloves and safety glasses for
protection
WARNING:Neverrunthevent
pipedownwardasthismaycause
excessive temperatures which
could cause a fire.
• Use extreme caution when using ladders
or when on roof tops
Note:Wheninstallinginachase,youshould
insulate the chase as you would the outside
walls of your home. This is especially im-
portant in cold climates. Minimum clear-
ance between vent pipes and combustible
materials such as insulation is 1".
• Be aware of electrical wiring locations
in walls and ceilings
You may use one or two 90° elbows in this
ventconfiguration. SeeHorizontalTermina-
tion Configurations on pages 13 and 14.
The following actions will void the war-
ranty on your venting system:
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
• Installation of any damaged venting
component
• Unauthorized modification of the vent-
ing system
105501
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OWNER’S MANUAL
Snorkel
VENTING
INSTALLATION
Continued
INSTALLATION FOR
HORIZONTAL TERMINATION
1. Determine the route your horizontal
venting will take. Note: The location
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.
12" Minimum
WARNING:Donotrecessvent
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 (base-
ment 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.
Figure 19 - Snorkel Termination
Snorkel
2. Rigid vent pipes and fittings have spe-
cial twist-lock connections. Assemble
the desired combination of pipe and el-
bows to the appliance adaptor with pipe
seams oriented towards the wall or floor.
12" Minimum
Twist-lock Procedure: The female ends
of the pipes and fittings have four locking
lugs (indentations). These lugs will slide
straightintomatchingslotsonthemaleends
of adjacent pipes and fittings. (All connec-
tions must be sealed with high tempera-
ture silicone sealant as specified in the sec-
ond warning statement on page 10.) Push
the pipe sections togetherandtwist onesec-
tion clockwise approximately one-quarter
turn until the sections are fully locked. See
Figure 21, page 12. Note: Horizontal runs
of vent must be supported every three feet.
Use wall straps for this purpose.
Adequate
drainage
Figure 20 - Snorkel Termination with Drainage Pipe
Continued
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
4. Apply a bead of non-hardening mastic 6. Carefully move the stove with vent as-
VENTING
around the outside edge of the vent cap.
sembly attached toward the wall and
insert the vent pipe into the horizontal
termination. The pipe overlap should
be a minimum of 1 1/4". Apply silicone
to the outer pipe connection. Fasten all
vent connections with screws provided.
INSTALLATION
Position the vent cap in the center of
1
the 7 /2" or 10" hole on the exterior
Continued
wall with the word “UP” on the vent
cap facing up. Insure proper clearance
of 1" to combustibles is maintained.At-
tach the vent cap with four wood screws
supplied (see Figure 23). Note: Re-
place the wood screws with appropri-
ate fasteners for stucco, brick, concrete,
or other types of siding.
3. Attach vent pipe assembly to the
burner system. Set stove in front of it’s
permanent location to insure minimum
clearances. Mark the wall for a 10"
square hole (for noncombustible ma-
terial such as masonry block or con-
crete, a 7 1/2" diameter hole is accept-
able). See Figure 22. The center of the
hole should line up with the center-
line of the horizontal rigid vent pipe.
Cut a 10"x10" (254mm x 254mm)
square hole through combustible ex-
7. Slide the wall thimble against the inte-
rior wall surface and attach with screws
provided (see Figure 25).
WARNING:Donotrecessvent
termination in to any wall. This
will cause a fire hazard.
Cut Vinyl Siding
Away to Fit
Standoff
For vinyl siding, stucco, or wood ex-
terior use vinyl siding standoffs be-
tween vent cap and exterior wall. The
vinyl siding standoff prevents exces-
sive heat from melting the vinyl sid-
ing material. Bolt the vent cap to the
standoff. Apply non-hardening mastic
around outside edge of the standoff in-
stead of the vent cap assembly. Use
wood screws provided to attach the
standoff. See Figure 24.
1
terior wall (7 /2" [190mm] diameter
Standoff
hole if noncombustible). Frame as nec-
essary (see Figure 22).
Wood
Screw
Female
Locking
Lugs
UP
Vent
Cap
Apply Mastic
to All Four
Sides
Nut
Male
Slots
Bolt
5. Slide the wall thimble over the vent pipe
before connecting the horizontal run to
the vent cap (see Figure 25).
Figure24-InstallingVinylSidingStandoff
Interior Wall
Surface
Rigid Vent Pipe
Figure 21 - Vent Pipe Connections
Apply Mastic
to All Four
Sides
Wall
Thimble
Vent Opening
Combustible Wall
10"
(254mm)
UP
10"
(254mm)
Wood
Screw
Vent Cap
Horizontal
Vent Pipe
Screw
Vent Cap
(Horizontal
Termination)
(Framing
Detail)
Figure 23 - Installing Horizontal Vent Cap
Vent Opening
Noncombustible Wall
Figure 25 - Connecting Vent Cap with
Horizontal Vent Pipe
7 1/2
(190mm)
"
Figure 22 - Vent Opening Requirements
105501
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OWNER’S MANUAL
Horizontal Venting
Vertical (V) Horizontal (H)
37" min. 29" max.
(30° and 90° only, no vertical pipe)
48" min. 41" max.
(30° elbow, 1' vertical pipe, 90° elbow)
VENTING
INSTALLATION
UP
Continued
Horizontal Termination
Configurations
60" min.
72" min.
89" min.
60" max.
84" max.
20' max.
Figures 26 through 28, and Figure 29 on
page 14 show different configurations for
venting with horizontal termination. Each
figure includes a chart with vertical mini-
mum/maximum and horizontal maximum
dimensions which must be met. Seal all
connections with high temperature silicone
sealant (outer pipe only) as specified in the
second warning statement on page 10. All
horizontal terminationsrequire 1/4" rise per
12" of horizontal run.
Note: This configuration for use with
corner installation.
Figure 27 - Horizontal Termination Configuration for Rigid Venting Using One
90° Elbow
UP
UP
Horizontal Venting
Vertical (V)
30" min.
Horizontal (H)
17" max.
Figure 26 - Horizontal Termination
Configuration for Rigid Venting
Venting with Two 90° Elbows
Vertical (V)
Horizontal (H1)
Horizontal (H1) +
Horizontal (H2)
5' min.
6' min.
7' min.
8' min.
2' max.
4' max.
6' max.
8' min.
6' max.
12' max.
18' max.
20' max.
20' max.
8' max.
20' max.
Figure 28 - Horizontal Termination Configuration for Rigid Venting Using Two 90°
Elbows
Continued
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
VENTING
INSTALLATION
Continued
Venting with Two 90° Elbows
Vertical (V)
Horizontal (H1) +
Horizontal (H2)
5' min.
6' min.
7' min.
8' min.
6' max.
12' max.
18' max.
20' max.
20' max.
20' max.
Figure 29 - Horizontal Termination Configuration for Rigid Venting Using Two 90° Elbows with Termination at 90° with Stove
2. Set the stove in desired location. Drop
a plumb line down from the ceiling to
the position of the burner system exit
flue. Mark the center point where the
vent will penetrate the ceiling. Drill a
small locating hole at this point.
Flat Ceiling Installation
INSTALLATION FOR
VERTICAL TERMINATION
1. Cut a 10" square hole in the ceiling us-
ing the locating hole as a center point.
The opening should be framed to
10"x10" (254mm x 254mm) inside di-
mensions, as shown in Figure 22 on
page 12 using framing lumber the same
size as the ceiling joists. If the area
above the ceiling is an insulated ceil-
ing or a room, nail firestop from the
top side. This prevents loose insulation
from falling into the required clearance
space. Otherwise, install firestop below
the framed hole. The firestop should be
installed with no less than three nails
per side (see Figure 31, page 15).
NOTICE:Userigidpipeonly.Flex
venting is not to be used with a
vertical termination.
Drop a plumb line from the inside of
the roof to the locating hole in the ceil-
ing. Mark the center point where the
vent will penetrate the roof. Drill a
small locating hole at this point.
1. Determine the route your vertical vent-
ing will take. If ceiling joists, roof
rafters, or other framing will obstruct
the venting system, consider an offset
(see Figure 30) to avoid cutting
loadbearing members. Note: Pay spe-
cial attention to these installation in-
structions for required clearances (air
space) to combustibles 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. Offsets must fall
within the parameters shown in Fig-
ure 18 on page 9.
Roof
Flashing
Wall Strap
2. Assemble the desired lengths of pipe
and elbows necessary to reach from the
burner system flue up through the
firestop. All connections must be
sealed with high temperature silicone
sealant as specified in the second warn-
ing statement on page 10. Be sure all
pipe and elbow connections are fully
twist-locked (see Figure 21, page 12).
45° Elbow
Ceiling Firestop
Figure 30 - Offset with Wall Strap and 45°
Elbows
105501
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OWNER’S MANUAL
Level
6. Continue to add pipe sections until the
height of the vent cap meets the mini-
mum building code requirements de-
scribed in Figure 18 on page 9. 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.
VENTING
Cathedral ceiling
support box
INSTALLATION
Continued
2" minimum below
finished ceiling
If area above is a room, install firestop
above framed hole.
7. Twist-lock the vent cap onto the last
section of vent pipe and seal outer pipe
connection with high temperature sili-
cone sealant as specified in the second
warning statement on page 10.
Note: If the vent pipe passes through any
occupied areas above the first floor, including
storage spaces and closets, you must enclose
pipe. Youmayframeandsheetrocktheenclo-
surewithstandardconstructionmaterial.Make
sure and meet the minimum allowable clear-
ances to combustibles. Do not fill any of the
required air spaces with insulation.
Cut hole 1/8" larger than support
box when projected onto roofline
Figure 32 - Cathedral Ceiling Support
Box Installation
If area above is not a room, install
firestop below framed hole.
Cathedral Ceiling Installation
Figure 31 - Installing Firestop
Non-hardening Mastic under all
edges of support box before nailing
1. Remove shingles or other roof cover-
ing as necessary to cut the rectangular
hole for the support box. Mark the out-
line of the cathedral ceiling support box
on the roof sheathing using the locat-
ing hole as a center point.
3. Cut a hole in the roof using the locating
hole as a center point. (Cover any ex-
posed open vent pipes before cutting
hole in roof.) The 10"x10" 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 combus-
tible materials. Frame the opening as
shown in Figure 22 on page 12.
Figure 33 - Installed Cathedral Ceiling
Support Box
2. Cut the hole 1/8" larger than the sup-
port box outline (see Figure 32).
3. Lower the support box through the hole
in the roof until the bottom of the box
extends at least 2" below the ceiling
(see Figure 32). Align the support box
vertically and horizontally using a level.
Temporarily tack the support box in
place through the inside walls and into
the roof sheathing.
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 30, page 14).
Whenever possible, use 45° elbows in-
stead of 90° elbows. The 45° elbow of-
fers less restriction to the flow of the
flue gases and intake air.
4. Using tin snips, cut the support box from
the top corners down to the roofline and
fold the resulting flaps over the roof
sheathing (see Figure 33). Apply a bead
of non-hardening mastic around the top
edges of the support box to make a seal
between the box and the roof. Nail in
place with roofing nails. Remove any
combustible material that might be in-
side of the support box.
5. Place the flashing over the pipe
section(s) extending through the roof.
Secure the base of the flashing to the
roof and framing with roofing nails.
Be sure roofing material overlaps the
top edge of the flashing as shown in
Figure 30, page 14. There must be a
1" clearance from the vent pipe to
combustible materials.
5. Complete the cathedral ceiling installa-
tion by following the same procedures
outlined in steps 2 through 7 for Flat
Ceiling Installation, pages 14 and 15.
Continued
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
Venting with Two 90° Elbows
VENTING
Vertical (V)
Horizontal (H1) +
Horizontal (H2)
INSTALLATION
Continued
5' min.
6' min.
7' min.
8' min.
2' max.
4' max.
6' max.
8' max.
Note: Install
restrictor into 4"
collar of burner
system as shown.
Vertical Termination
Configurations
Figures 34 through 36 and Figure 37 on
page 17 show four different configurations
for vertical termination. All connections
must be sealed with high temperature sili-
conesealantasspecifiedinthesecondwarn-
ing statement on page 10.
20' max.
8' max.
Note: Install restrictor
into 4" collar of burner
system as shown.
Figure 35 - Vertical Rigid Venting Configuration Using Two 90° Elbows with Two
Horizontal Runs
Venting with Two 90° Elbows
Vertical (V1)
Horizontal (H)
5' min.
6' min.
7' min.
8' min.
6' max.
12' max.
18' max.
20' max.
Venting with One 90° Elbow
Vertical (V)
Horizontal (H)
Note: Vertical (V1) +
Vertical (V2) = 20' max.
5' min.
6' min.
7' min.
8' min.
2' max.
4' max.
6' max.
8' max.
Note: Install restrictor
into 4" collar of burner
system as shown.
20' max.
8' max.
Figure 34 - Vertical Rigid Venting
Configuration Using One 90° Elbow
Figure 36 - Vertical Rigid Venting Configuration Using Two 90° Elbows
105501
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OWNER’S MANUAL
Consult your local gas company to help de-
termine the proper orifice for your location.
Comfort Glow Rigid Venting (Cont.)
Number Description
VENTING
INSTALLATION
For assistance with any high altitude instal- CD3000
lation contact DESA International’s Tech-
Wall Strap/Offset Support
(1 pk)
Continued
nical Service Department at 1-800-DESA- CD3010
Storm Collar (1 pk)
LOG (1-800-337-2564).
CD3020
CD3040
Wall Thimble (1 pk)
VerticalTerminationCap(1pk)
PARTS LISTS FOR VENTING
KITS AND COMPONENTS
Comfort Glow Rigid Venting
Number Description
CD3050
CD3060
Vertical Restrictor (1 pk)
Ceiling Firestop/Support
(1 pk)
CD3070
CD3090
Rectangular Horizontal Rigid
Vent Termination Cap
CGFVKBK Ground Floor Rigid Vent Kit
Includes: 7" x 60° Elbow, Ex-
tended 7" Adjustable Pipe (7-
12"), Horizontal Termination,
Wall Thimble and 14 Screws
Cathedral Ceiling Support
Box
CD4000
CD4010
CD5000
Roof Flashing 6/12-9/12
Roof Flashing 9/12-12/12
Note: Install
CBVKBK Basement Rigid Vent Kit
Includes: 7" x 30° Elbow, 7" x 4'
Pipe, 7" x 90° Elbow, 7" Adjust-
ablePipe(7-12"),WallThimble,
Horizontal Termination, RTV
Silicone and 20 Screws
Wood/Vinyl Siding Standoff
(1 pk)
restrictor into 4"
collar of burner
system as shown.
SIMPSON DURA-VENT
GS 4" x 6 5/8 " (Black Pipe)
Number Description
CSVKBK Snorkel Rigid Vent Kit
Includes: 7" x 30° Elbow, 7" x 4'
Pipe, 7" x 90° Elbow, 7" Adjust-
ablePipe(7-12"),WallThimble,
36" Snorkel Termination, RTV
Silicone and 28 Screws
Available from DESA International:
SD2040B Simpson Dura-Vent GS
30° Elbow (6 pcs.)
SD2050B Simpson Dura-Vent GS
60° Elbow (6 pcs.)
RVKBK Kit Shown
Vertical Venting
V = 40' max.
CRVKBK Roof Rigid Vent Kit
Includes:FlueRestrictor, Storm
Collar, 7" x 30° Elbow, 7" x 4'
Pipe, 7" x 2' Pipe, 7" Adjust-
able Pipe (7-12"), Firestop Sup-
port, Roof Flashing, RTV Sili-
cone, VerticalTermination, and
26 screws
AvailablefromSimpsonDura-Ventonly:
902B 7" x 48" Pipe
903B 7" x 36" Pipe
904B 7" x 24" Pipe
Figure 37 - Vertical Rigid Venting
Configuration With No Horizontal Run
906B 7" x 12" Pipe
907B 7" x 9" Pipe
HIGH ALTITUDE
INSTALLATION
908B 7" x 6" Pipe
911B 7" Adjustable (11"-14 5/8") Pipe
CD1000BK 7" x 12" Black Coaxial Pipe
(1 pk)
Your Comfort Glow cast iron stove and
direct-vent burner system has been AGA
tested and approved for elevations from
0-2000 feet and CGA certified for eleva-
tions from 0-4500 feet.
940
941
943
Wall Thimble
CD1010BK 7" x 24" Black Coaxial Pipe
(1 pk)
Cathedral Ceiling Support Box
Roof Flashing 0/12-6/12
CD1020BK 7" x 48" Black Coaxial Pipe
(1 pk)
943S Roof Flashing 7/12-12/12
CD1030BK 7" Adjustable (7-12")Black
Coaxial Pipe (1 pk)
945B 7" x 45° Elbow
When installing this stove at an elevation
above2000feet(intheUSA), youmayneed
to decrease the input rating by changing the
existing burner orifice to a smaller size.
Reduce input 4% for each 1000 feet above
sea level. Check with your local gas com-
pany for proper orifice size identification.
950
953
963
981
984
988
Vinyl Siding Standoff
Storm Collar
CD1050BK 7" x 6" Black Coaxial Pipe
(1 pk)
CD2000BK 7" X 90° Elbow (1 pk)
CD2010BK 7" x 45° Elbow (1 pk)
CD2020BK 7" x 30° Elbow
CD2030BK 7" x 60° Elbow
Ceiling Firestop
36" Snorkel Termination
Horizontal Termination Vent Cap
Wall Strap
When installing this stove at an elevation
above 4500 feet (in Canada), check with
local authorities.
990B 7" x 90° Elbow
991 Vertical High Wind Termination
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
For propane/LP connections only, the in- Apply pipe joint sealant lightly to male
staller must supply an external regulator. threads. This will prevent excess sealant
Theexternalregulatorwillreduceincoming from going into pipe. Excess sealant in pipe
gas pressure. You must reduce incoming couldresultincloggedburnersystemvalves.
gas pressure to between 11 and 14 inches of
STOVE AND
DIRECT-VENT
BURNER SYSTEM
INSTALLATION
water. If you do not reduce incoming gas
pressure, burner system regulator damage
could occur. Install external regulator with
the vent pointing down as shown in Figure
CAUTION:Usepipejointseal-
ant that is resistant to liquid pe-
troleum (LP) gas.
CHECK GAS TYPE
Use proper gas type for the burner system
you are installing. If you have conflicting
gas types, do not install burner system. See
dealer where you purchased the stove and
burner system for proper burner system
according to your gas type.
38. Pointing the vent down protects it from
freezing rain or sleet.
We recommend that you install sediment
trap/drip leg in supply line as shown in
Figure 39. Locate sediment trap/drip leg
where it is within reach for cleaning. Install
in piping system between fuel supply and
burner system. 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 burner system gas controls. If sediment
trap/drip leg is not installed or is installed
wrong, burnersystemmaynotrunproperly.
CAUTION: Use only new,
black iron or steel pipe. Inter-
nally-tinned copper tubing may
be used in certain areas. Check
yourlocalcodes. Usepipeof1/2"
diameter or greater to allow
propergasvolumetoburnersys-
tem. If pipe is too small, undue
loss of pressure will occur.
INSTALLING GAS PIPING TO
STOVE/BURNER SYSTEM
LOCATION
WARNING: A qualified ser-
vicepersonmustconnectburner
system to gas supply. Follow all
local codes.
Propane/LP
Supply Tank
Installation must include a manual 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
burner system (see Figure 39).
External
Regulator
CAUTION: For propane/LP
units, never connect burner sys-
tem directly to the propane/LP
supply. This burner system re-
quires an external regulator (not
supplied). Install the external
regulatorbetweentheburnersys-
tem and propane/LP supply.
IMPORTANT: Install main gas valve
(manual shutoff valve) in an accessible lo-
cation. The main gas valve is for turning on
or shutting off the gas to the appliance.
Check your building codes for any special
requirements for locating manual shutoff
valve to stoves.
Vent
Pointing
Down
Installation Items Needed
Before installing stove and burner system,
make sure you have the items listed below.
A.G.A. Design-Certified Manual
Shutoff Valve with 1/8" NPT Tap*
Figure 38 - External Regulator with Vent
Pointing Down (Propane/LP Only)
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• manual shutoff valve *
• test gauge connection *
• sediment trap
Natural - From Gas
Meter (5" W.C. to
10.5" W.C. Pressure )
Approved Flexible
Gas Line
• tee joint
Propane/LP - From
External Regulator
(11" W.C. to 14" W.C.
Pressure)
• pipe wrench
3" Minimum
• approved flexible gas line with gas con-
nector (if allowed by local codes) (not
provided)
Cap Pipe Nipple Tee Joint
Sediment Trap/Drip Leg
* AnA.G.A.design-certifiedmanualshutoff
valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Pur-
chase the A.G.A. design-certified manual
shutoff valve from your dealer.
* The A.G.A. design-certified manual shutoff valve may be supplied with the appliance or
you can purchase it from your dealer.
Figure 39 - Gas Connection
105501
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OWNER’S MANUAL
CHECKING GAS
CONNECTIONS
STOVE AND
DIRECT-VENT
BURNER SYSTEM
WARNING: Test all gas pip-
ing and connections for leaks
after installing or servicing. Cor-
rect all leaks at once.
INSTALLATION
Continued
CONNECTING STOVE/
BURNER SYSTEM TO GAS
SUPPLY
WARNING:Neveruseanopen
flame to check for a leak. Apply
commercial leak test solution to
all gas joints. Bubbles forming
show a leak. Correct all leaks at
once.
Installation Items Needed
• 5/16" hex socket wrench or nut-driver
• sealant (resistant to propane/LP gas, not
provided)
Pressure Testing Gas Supply
Piping System
1. Open lower door panel.
2. Route flexible gas line (provided by
installer) from manual shutoff valve to
burner system. Route flexible gas sup-
ply line through slot in stove bottom
and attach to valve.
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect burner system and its
individual manual shutoff valve from
gas supply piping system. Pressures in
excess of 1/2 psig (3.5 kPa) will
damage burner system gas regulator.
2. Cap off open end of gas pipe where
manual shutoff valve was connected.
3. Pressurize supply piping system by ei-
ther opening propane/LP supply tank
valve for propane/LP gas burner sys-
3. Check all gas connections for leaks. See
Checking Gas Connections.
Manual Shutoff Valve
To Flare Fitting on
Control Valve
tem or opening main gas valve located
on or near gas meter for natural gas
burner system, or using compressed air.
4. Check all joints of gas supply piping
system. Apply commercial leak test so-
lution to all gas joints. Bubbles forming
show a leak. Correct all leaks at once.
5. Reconnect burner system and manual
shutoff valve to gas supply. Check re-
connected fittings for leaks.
To Gas Supply
(Natural)
Flexible Gas Line from
Manual Shutoff Valve
Provided by Installer
To External
Regulator
(Propane/LP)
Figure 40 - Flexible Gas Line
Continued
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
Open
STOVE AND
Manual
Shutoff
Valve
DIRECT-VENT
BURNER SYSTEM
INSTALLATION
Closed
Continued
Figure 41 - Manual Shutoff Valve
Test Pressures Equal To or Less Than 1/2
PSIG (3.5 kPa)
1. Close manual shutoff valve (see
Manual
Shutoff
Valve
Figure 41).
Propane/
LP Supply
Tank
2. Pressurize supply piping system by ei-
ther opening propane/LP supply tank
valve for propane/LP gas burner sys-
tem or opening main gas valve located
on or near gas meter for natural gas
burner system or using compressed air.
,
3. Check all joints from propane/LP sup-
ply tank or gas meter to manual shutoff
valve (see Figure 42 for propane/LP or
Figure 43 for natural). Apply commer-
cial leak test solution to all gas joints.
Bubbles forming show a leak. Correct
all leaks at once.
Gas Valve
Figure 42 - Checking Gas Joints for Propane/LP Gas Burner System
Pressure Testing Burner
System Gas Connections
1. Open manual shutoff valve (see Fig-
ure 41).
Manual
Shutoff
Valve
2. Open propane/LP supply tank valve for
propane/LPburner system or main gas
valve located on or near gas meter for
natural gas burner system.
Gas Meter
3. Make sure control knob of burner sys-
tem is in the OFF position.
4. Check all joints from manual shutoff
valve to thermostat gas valve (see Fig-
ure 42 for propane/LP or Figure 43 for
natural).Apply commercial leak test so-
lution to all gas joints. Bubbles forming
show a leak. Correct all leaks at once.
Gas Valve
5. Light burner system (see Operating
Stove with Burner System, pages 23
through 25). Check all other internal
joints for leaks.
Figure 43 - Checking Gas Joints for Natural Gas Burner System
6. Turn off burner system (see To Turn Off
Gas to Appliance, page 23).
105501
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OWNER’S MANUAL
REMOVING/REPLACING
GLASS DOOR
You must remove glass door to install logs,
lava rock, and ember material. To remove
glass door, you must first remove the front
Receiver
STOVE AND
DIRECT-VENT
BURNER SYSTEM
INSTALLATION
Terminal
panel on stove body.
Wires
Continued
Battery
Clip
CAUTION:Donotoperatethis
burner system with a broken
glass door panel or without the
glass door panel securely in
place. For replacement part in-
formation see Replacement
Parts, page 30.
INSTALLING OPTIONAL
WIRELESS HAND-HELD
REMOTE CONTROL
ACCESSORIES - CGHRC
AND CGHRCT SERIES
9-Volt Battery
Figure 46 - Installing Battery in Receiver
Installing Remote Receiver
1. Remove 2 bolts from bottom of stove
and one from the top of stove to remove
front panel (see Figure 49).
1. Open bottom door on stove body and
locate the switch plate on the left of the
valve bracket.
O
L
2. Remove the screws from the 2 tabs at the
top of the glass door while holding door
securely keeping it from falling forward.
H
I
2. Unscrew switch plate (see Figure 44).
P
OF
L
O
ON
T
3. Disconnect wires from THTP and TH
on control valve that lead to the switch
(see Figure 45). Discard switch plate,
screws, and nuts.
Figure 47 - Installing Remote Receiver
3. Grasp door by both sides and ease it
upward off of the lower bracket (see
Figure 50).
Installing 9-Volt Battery in Hand-
Held Remote Control Unit
1. Remove battery cover on back of re-
mote control unit
4. Install battery into receiver battery clip
and connect to terminals (see Figure 46).
4. To replace glass door, follow the above
instructions in reverse.
5. Place receiver into valve bracket and
align holes (see Figure 47).
Bolt
2. Attach terminal wires to a 9-volt bat-
tery (not included). Place battery into
the battery housing.
6. Use push-in fasteners included with
receiver to secure to bracket.
7. Connect the wires from the receiver to the
valve at TH and THTP (see Figure 45).
3. Replace battery cover onto remote con-
trol unit.
Remote
Battery
Control Unit
Cover
Terminal
Wires
Bolt
O
L
H
I
9-Volt
Battery
P
O
L
O
ON
T
Stove Front
Panel
Figure 44 - Removing Switch Plate
Figure 49 - Removing Front Panel from
Stove
To Control
Switch or
Optional
Screw
Battery Housing
Accessory
Figure 48 - Installing Battery in Hand-
Held Remote Control Unit
Glass
Door
Figure 45 - Control Valve Terminals
Figure 50 - Removing Glass Door from
Burner System Insert
Continued
105501
21
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
5. Place log #4 (right piece) onto the front 6. Place lava rock along sides and front
STOVE AND
right part of the grate making sure the
notches fit over the prong of the grate
(see Figure 54).
of inside of burner system bottom. It is
not necessary to use all of the lava rock
provided.
DIRECT-VENT
BURNER SYSTEM
NOTICE: Do not put lava rock on
burner or under burner. Placing
lava rock on burner could cause
performance problems.
INSTALLATION
Continued
2
INSTALLING LOGS, LAVA
ROCK AND GLOWING
EMBERS
7. Pull ember material apart into pieces
no larger than a dime. Place these
pieces loosely and sparingly directly
onto the exposed section of the front
burner and along the space between the
burner and grate prongs (see Figure 55).
This will create the glowing ember ap-
pearance as the flame touches the em-
ber material. Do not block air slots by
using too much ember material in one
area. It is not necessary to use all of the
ember material provided.
WARNING: Failure to posi-
tion the parts in accordance with
these diagrams or failure to use
only parts specifically approved
with this burner system may re-
sult in property damage or per-
sonal injury.
Each log is marked with a number. These
numberswillhelpyouidentifythelogwhen
installing. It is very important to install
these logs exactly as instructed. Do not
modify logs. Only use logs supplied with
freestanding burner system. Do not use if
any log(s) are broken (see Replacement
Parts, page 30).
Figure 52 - Installing Log No. 2
8. Replace the glass door and stove front.
See Removing/Replacing Glass Door,
page 21.
3
WARNING: The glass door
must be securely in place before
running this burner system. Do
notrunthisburnersystemifglass
is missing or broken.
1. Remove glass door. See Removing/Re-
placing Glass Door, page 21.
2. Place log #1 (back log) on top of grate.
Make sure the notches in the bottom of
the log fit over the grate (see Figure 51).
3. Rest log #2 (large front log) on the pins on
the front part of the grate (see Figure 52).
4. Place log #3 (left piece) onto the front
left part of the grate. Make sure it is
seated properly over the prong of the
grate as shown in Figure 53.
Figure 53 - Installing Log No. 3
4
1
Figure 55 - Placing Ember Material on
Burner
Figure 54 - Installing Log No. 4
Figure 51 - Installing Log No. 1
105501
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OWNER’S MANUAL
LIGHTING
INSTRUCTIONS
TO TURN OFF GAS
TO APPLIANCE
1. Open lower panel.
OPERATING STOVE
WITH BURNER
SYSTEM
1. STOP! Read the safety information
in column one.
2a. Turn ON/OFF switch to “OFF”.
2. Open lower panel.
2b. If Using Optional Hand-Held Re-
mote: Set selector switch in the OFF
position to prevent draining battery.
FOR YOUR SAFETY
READ BEFORE
LIGHTING
3. Turn ON/OFF switch to “OFF”.
4. Turn off all electric power to the
burner system.
3. Turn off all electrical power to the
appliance if service is to be performed.
5. Push in gas control knob slightly and
WARNING: If you do not fol-
low these instructions exactly, a
fireorexplosionmayresultcaus-
ing property damage, personal
injury or loss of life.
4. Push in gas control knob slightly and
turn clockwise
to “OFF”.
turn clockwise
to “OFF”.
6. Wait five (5) minutes to clear out any
gas. Then smell for gas, including
near the floor. If you smell gas,
STOP! Follow “B” in the safety in-
formation in column one. If you don't
smell gas, go to the next step.
5. Close lower panel.
Shutting Off Burners Only (pilot
stays lit)
A. This appliance has a pilot which must
be lighted by hand. When lighting the
pilot, follow these instructions exactly.
You may shut off the burners and keep
7. The pilot is located by the main the pilot lit by doing one of the following:
B. BEFORE LIGHTING smell all
around the appliance area for gas. Be
sure to smell next to the floor because
some gas is heavier than air and will
settle on the floor.
burner and should not require ac-
cessing for lighting.
1. Turn gas control knob clockwise
to the PILOT position.
8. Turn gas control knob counterclock-
2. Set selector switch in the OFF position.
wise
to “PILOT”.
Gas Control
Variable
9. Push in gas control knob all the way
and hold. Immediately light the pi-
lot by repeatedly depressing the piezo
spark ignitor until a flame appears.
Continue to hold for about one (1)
minute after the pilot is lit. Release
gas control knob and it will pop back.
Pilot should remain lit. If it goes out,
repeat steps 5 through 8.
WHATTO DO IFYOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric 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.
Knob
Control Knob
L
Piezo Ignitor
C. Use only your hand to push in or turn
the gas control knob. Never use tools.
If the knob will not push in or turn
by hand, don't try to repair it, call a
qualified service technician. Force or
attempted repair may result in a fire
or explosion.
Figure 56 - Control Valve
• If gas control knob does not pop
up when released, stop and im-
mediately call your service tech-
nician or gas supplier.
• If the pilot will not stay lit after sev-
eral tries, turn the gas control knob 1. Remove glass door (see Removing/
MANUAL LIGHTING
PROCEDURE
D. Do not use this appliance if any part
has been under water. Immediately
call a qualified service technician
to inspect the appliance and to re-
place any part of the control sys-
tem and any gas control which has
been under water.
to “OFF” and call your service
technician or gas supplier.
Replacing Glass Door, page 21).
2. Follow steps 1 through 8 under Light-
ing Instructions.
10. Turn gas control knob counterclock-
wise
to “ON”.
3. Depress gas control knob and light
pilot with match.
11. Turn on all electric power to the
burner system.
4. Keep gas control knob pressed in for
30 seconds after lighting pilot. Af-
ter 30 seconds, release gas control
knob. Now follow steps 10 through
14, column 2.
12. Turn the ON/OFF switch to ON
position.
13. This valve is equipped with a HI/LO
feature. Set burner system input as
desired.
5. Replace glass door (see Removing/
Replacing Glass Door, page 21).
14. Close lower panel.
Continued
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
IMPORTANT: This remote control
CGHRC Series Operation:
OPERATING STOVE
WITH BURNER
has been specially engineered to take
an air temperature sample every 5.5
minutes in auto mode. It will not re-
spond immediately to the tempera-
ture setting being turned up or down.
2a. Press the ON/OFF button to turn the
burners on and off. When turning
burners off, the pilot will remain lit.
SYSTEM
Continued
CGHRCT Series Operation:
IMPORTANT:The hand-held remote
control unit must be near the stove
but not extremely close to it. The
thermostat on the hand-held remote
control unit will heat up too quickly
and turn the burner system off.
OPTIONAL REMOTE
OPERATION
Note:Allremotecontrolaccessoriesmust
be purchased separately (See Accessories
on page 31). Follow instructions included
with the remote control.
2b. Select the MAN (manual) or AUTO
button on the hand-held remote con-
trol unit (see Figure 58).
• In manual mode, turn burners on
or off by pressing the ON or OFF
buttons on the hand-held remote
control unit.
3. Use the STATUS button on the hand-
held remote control unit to see the
operation mode being used and the
temperature setting selected. A red
light will come on beside the opera-
tion mode being used.
• In auto mode, the room tempera-
ture is controlled by the thermo-
stat in the hand-held remote con-
trol unit. To increase the room
temperature, press the top arrow
of the TEMP button. To lower the
room temperature, press the bot-
tom arrow of the TEMP button.
At higher settings the burner sys-
tem will run more.
Thermostat Control Operation
(Optional CGHRCT Only) The thermo-
stat control setting on the remote control
unit can be set to any comfort level be-
tween HI and LO. The burners will turn
on and off automatically to maintain the
comfortlevelyouselect. Theidealcomfort
setting will vary by household depending
upontheamountofspacetobeheated, the
output of the central heating system, etc.
4. To turn the burners off when oper-
ating in the manual mode, press the
OFF button. If operating in the auto
mode, press the MAN button, then
press the OFF button. The pilot will
remain lit. IMPORTANT:To turn the
pilot off, manually turn the gas con-
trol knob on the burner system to the
OFF position.
Selector Switch in
NOTICE: You must light the pilot
before using the hand-held re-
mote control unit. See Lighting
Instructions, page 23.
Remote Position
Gas Control Knob
(Optional Remote
in On Position
Control)
ON
OFF
1. After lighting, let pilot flame burn for
about one minute. Turn gas control
knob on the control valve to ON posi-
tion. Turn variable control knob any-
where between HI and LO. Slide the
selector switch to the REMOTE posi-
tion. Note: The burners may light if
hand-held remote ON button was on
when selector switch was last turned
off. You can now turn the burners on
and off with either optional hand-held
remote control unit.
REMOTE
L
Variable Control Knob
Figure 57 - Setting the Selector Switch,
Gas Control Knob, and Variable Control
Knob for Remote Operation
Increases Room
Temperature
Shows Temperature
Setting
HI
Decreases Room
Temperature
IMPORTANT: Do not leave the se-
lector switch in the REMOTE posi-
tion when the pilot is not lit. This will
drain the battery.
TEMP
Allows Burners to be
Turned On and Off
with the Hand-Held
Remote Unit
Turns Burners On
and Off
LO
MAN
ON
IMPORTANT: Be sure to press the
ON/OFF buttons on the hand-held
remote control unit for up to 3 sec-
onds to assure proper operation.
The Burner System
will Automatically
Cycle between Pilot
and the Heat Setting
that has been
AUTO
OFF
Shows Current
Operation Mode
STATUS
Selected
Figure 58 - Hand-Held Thermostat Remote Control Unit Selections
(CGHRCT Only)
105501
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OWNER’S MANUAL
BURNER FLAME PATTERN
OPERATING STOVE INSPECTING
Burner flames will be steady; not lifting or
floating. Flame patterns will be different
Check pilot flame pattern and burner flame from unit to unit and will vary depending on
WITH BURNER
BURNERS
SYSTEM
patterns often.
installation type and weather conditions.
Continued
If the vent configuration is installed incor-
rectly, the flames will lift or "ghost". This
can be dangerous. Inspect the flames after
installationtoensureproperinstallationand
performance.
PILOT ASSEMBLY
OPERATING
OPTIONAL BLOWER
ACCESSORY
The pilot assembly is factory preset for the
proper flame height. Alterations may have
occurredduringshippingandhandling.Call
a qualified service person to readjust the
pilot if necessary.
Locate the blower controls by opening the
lower door on the stove. Blower controls
are located on the left side of the switch
bracket to the left just inside the door.
Figure 60 shows a typical flame pattern. If
burner flame pattern differs from that
described:
The height of the thermopile must be 3/8" to
1/2"abovethepilotflameasshowninFigure
59. The thermocouple must be at a height of
about 1/8" above the pilot flame. The flame
from the pilot burner must extend beyond
both the thermocouple and thermopile.
• turn burner system off (see To Turn Off
Gas to Appliance, page 23)
Both the GA3750 manual blower and the
CDA3620T thermostatically-controlled
blower have an ON setting and an OFF
setting. The blower will only run when the
switch is in the ON position. In the OFF
position, the blower will not operate.
• see Troubleshooting, pages 27 through 29
If your pilot assembly does not meet these
requirements:
Note for CDA3620T Only: If you are
using CDA3620T blower with optional
remotecontrolthermostatfortheburner
system, your burner system and blower
will not turn on and off at the same time.
The burner system may run for several
minutesbeforetheblowerturnson.After
the burner system modulates to the pilot
position, the blower will continue to run.
The blower will shut off after the burner
system temperature decreases.
• turn burner system off (see To Turn Off
Gas to Appliance, page 23)
• see Troubleshooting, pages 27 through 29
Thermopile
Figure 60 - Typical Flame Pattern
3/8" to 1/2"
Pilot Burner
1/8"
The blower helps distribute heated air
from the burner system. Periodically
check the air passageways of the burner
system and remove any dust, dirt, or
other obstructions that will hinder the
flow of air.
Thermocouple
Piezo Ignitor
Figure 59 - Pilot Assembly
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
LOGS
CLEANING AND
WARNING: Only parts sup-
• If you remove logs for cleaning, refer to
pliedbythemanufacturershould
be used when replacing broken
ordamagedglassdoorpanel(see
ReplacementParts,page30).This
glass door panel is a complete
unit. Nosubstitutematerialsmay
be used.
MAINTENANCE
Installing Logs, Lava Rock, and Glowing
Embers, page 22, to properly replace logs.
• Use a vacuum cleaner to remove any car-
bon buildup on logs.
WARNING:Turnoffburnersys-
tem and let cool before cleaning.
• Replace log(s) if broken. See Replace-
ment Parts on page 30.
CAUTION:Youmustkeepcon-
trol areas, burners, and circulat-
ing air passageways of burner
system and stove clean. Inspect
theseareasofburner system and
stove before each use. Have
burner system and stove in-
spected yearly by a qualified ser-
vice person. Burner system and
stove may need more frequent
cleaningduetoexcessivelintfrom
carpeting, bedding material, pet
hair, etc.
• Replace ember material periodically as
needed. See Replacement Parts on page 30.
CAUTION: Wear gloves and
safety glasses while handling or
removing broken glass. Do not
remove if glass is hot. Keep chil-
dren and pets away from glass.
VENTING SYSTEM
Conduct annual inspection of the venting
system following these guidelines:
If glass has been broken, carefully remove
glass door (see Removing/Replacing Glass
Door, page 21). Vacuum all glass pieces
with a shop vac.
1. Check areas of venting system that are
exposed to the weather for corrosion (rust
spots or streaks and, in extreme cases,
holes). Have these items replaced imme-
diately by a qualified service person.
CAUTION: Do not vacuum if
pieces are hot.
2. Remove the vent cap and shine a flash-
light into the vent. Remove any foreign
material.
GLASS DOOR
Use only the ceramic glass door replace-
ment intended for this burner system (see
Replacement Parts, page 30 for detail on
ordering). No substitutions may be made.
See Removing/Replacing GlassDoor, page
21 for instructions for replacing glass door.
3. Check for evidence of excessive con-
densation. Continuous condensation
can cause corrosion of caps, pipes, and
fittings and can be caused by having
excessive lateral runs, too many elbows,
or exterior portions of the system be-
ing exposed to cold weather.
WARNING: Handle glass
door panel with care. Do not
strike, slam, or otherwise abuse
glass.Donotoperateburnersys-
temwiththeglassdoorremoved,
cracked, or broken.
WARNING: Do not operate
burnersystemwiththeglassdoor
removed, cracked, or broken.
4. Inspect joints to verify that no pipe sec-
tion or fitting has been disturbed and
loosened. Check mechanical supports
such as wall straps for rigidity.
WARNING: Do not use abra-
sivecleanersasthismaydamage
glass. Use a nonabrasive house-
hold glass cleaner to clean glass.
Do not clean glass when hot.
PILOT AND BURNERS
• Remove ember material before cleaning
burners and replace when cleaning is
complete.
Glass must be cleaned periodically. During
start-up it is normal for condensation to
form on the inside of the glass causing lint,
dust, and other airborne particles to cling to
the glass surface. During initial start-up a
slight film may form on the glass due to
paint curing. The glass should be cleaned
several times with a non-ammonia, non-
abrasivehouseholdcleanerandwarmwater
afterthefirsttwoweeksofoperation.There-
after, clean the glass two or three times
during each heating season, depending on
the usage and circumstances present. Refer
toRemoving/ReplacingGlassDooronpage
21ofthismanualwhenremovingglassdoor
for cleaning.
• Burner and controls should be cleaned
with compressed air to remove dust, dirt,
or lint.
• Use a vacuum cleaner or small, soft
bristled brush to remove excess dust, dirt,
or lint.
105501
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OWNER’S MANUAL
TROUBLESHOOTING
Note: For additional help, visit DESA
International’s technical service web
WARNING: Turn off burner
CAUTION: Never use a wire,
needle, or similar object to clean
pilot. This can damage pilot unit.
system and let cool before ser-
vicing. Only a qualified service
personshouldserviceandrepair
burner system or stove.
Note:Alltroubleshootingitemsarelistedin
order of operation.
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
When ignitor button is pressed, there is no
spark at pilot
1. Ignitor electrode not connected to igni- 1. Reconnect ignitor cable
tor cable
2. Ignitor cable pinched or wet
2. Free ignitor cable if pinched by any
metal or tubing. Keep ignitor cable dry
3. Tighten nut holding piezo ignitor. Nut
is located behind the mounting bracket
4. Replace ignitor cable
3. Piezo ignitor nut is loose
4. Broken ignitor cable
5. Bad piezo ignitor
5. Replace piezo ignitor
6. Ignitor electrode broken
6. Replace pilot assembly
7. Ignitor electrode positioned wrong
7. Replace pilot assembly
When ignitor button is pressed, there is
spark at pilot but no ignition
1. Gas supply turned off or manual shutoff 1. Turn on gas supply or open manual
valve closed shutoff valve
2. Gas control knob not in PILOT position 2. Turn gas control knob to PILOT position
3. Gas control knob not pressed in while 3. Press in gas control knob while in PILOT
in PILOT position
position
4. Air in gas lines when installed
4. Continue holding down gas control
knob. Repeat igniting operation until air
is removed
5. Depleted gas supply (propane/LP mod- 5. Contact local propane/LP gas company
els only)
6. Pilot is clogged
6. Clean pilot (see Cleaning and Mainte-
nance, page 26) or replace pilot assembly
7. Replace gas control
7. Gas regulator setting is not correct
1. Gas control knob not fully pressed in
Pilot lights but flame goes out when control
knob is released
1. Press in gas control knob fully
2. Gas control knob not pressed in long 2. After pilot lights, keep gas control knob
enough
pressed in 30 seconds
3. Manual shutoff valve not fully open
3. Fully open manual shutoff valve
4. Pilot flame not touching thermocouple, 4. A) Contact local gas company
which allows thermocouple to cool,
causing pilot flame to go out. This prob-
lem could be caused by one or both of
the following:
B) Clean pilot (see Cleaning and
Maintenance, page 26) or replace pilot
assembly
A) Low gas pressure
B) Dirty or partially clogged pilot
5. Thermocouple connection loose at con- 5. Hand tighten until snug, then tighten
trol valve
1/4 turn more
6. Thermocouple damaged
6. Replace thermocouple
7. Control valve damaged
7. Replace control valve
Continued
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
Burner does not light after pilot is lit
1. Burner orifice clogged
1. Clean burner (see Cleaning and
Maintenance, page 26) or replace burner
orifice
2. Inlet gas pressure is too low
2. Contact local propane/LP or natural gas
company
3. Thermopile leads disconnected or im- 3. Reconnect leads (see Wiring Diagram,
properly connected
page 30)
4. Thermopile is defective
4. Replace thermopile
Delayed ignition burner
1. Manifold pressure is too low
1. Contact local propane/LP or natural gas
company
2. Burner porting or orifice clogged
2. Clean burner (see Cleaning and Main-
tenance, page 26) or replace burner orifice
Burner backfiring during combustion
1. Burner orifice is clogged or damaged
1. Clean burner (see Cleaning and
Maintenance, page 26) or replace burner
orifice
2. Damaged burner
2. Replace damaged burner
3. Gas regulator defective
3. Replace gas control
Slight smoke or odor during initial operation 1. Residues from manufacturing processes 1. Problem will stop after a few hours of
and logs curing operation
Burner system produces a whistling noise 1. Turning gas control knob to HI position 1. Turn gas control knob to LO position and
when burner is lit
when burner is cold
let warm up for a minute
2. Air in gas line
2. Operate burner until air is removed from
line. Have gas line checked by local pro-
pane/LP or natural gas company
3. Dirty or partially clogged burner orifice 3. Clean burner (see Cleaning and
Maintenance, page 26) or replace burner
orifice
Glass soots
1. Flame impingement on logs
2. Debris around burner air mixer
1. Adjust the log set so that the flame does
not excessively impinge on it
2. Inspect the opening at the base of the
burner to see that it is NOT packed with
any type of material
Burner system produces a clicking/ticking 1. Metal expanding while heating or con- 1. This is common. If noise is excessive,
noise just after burners are lit or shut off
tracting while cooling
contact qualified service person
Remote does not function
1. Battery is not installed or battery power 1. Replace 9-volt batteries in receiver and
is low remote control
105501
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OWNER’S MANUAL
TROUBLESHOOTING
Continued
WARNING: 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 your gas supplier, call the fire department.
IMPORTANT: Operating burner system where impurities in air exist may create odors. Cleaning
supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create
fumes. These fumes may mix with combustion air and create odors. These odors will disappear over time.
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
Burner system produces unwanted odors
1. Gas leak. See Warning statement 1. Locate and correct all leaks (see Check-
above
ing Gas Connections, pages 19 and 20)
Burner system shuts off in use
1. High or gusting winds
1. Burner system has been tested for up to
40mph winds. However, extreme con-
ditions may occur. See Lighting Instruc-
tions on page 23
2. Low line pressure
2. Contact local propane/LP or natural gas
company
3. Pilot is partially clogged
3. Clean pilot (see Cleaning and Mainte-
nance, page 26)
4. Inner vent pipe leaking exhaust gasses 4. Locate and correct all leaks (see Check-
into system ing Gas Connections, pages 19 and 20)
5. Glass too loose and air tight gasket leaks 5. Tighten glass
in corners after usage
6. Bad thermopile or thermocouple
7. Improper vent cap installation
6. Replace faulty component
7. Check for proper installation and free-
dom from debris or blockage
Gas odor even when control knob is in OFF 1. Gas leak. See Warning statement 1. Locate and correct all leaks (see Check-
position
above
ing Gas Connections, pages 19 and 20)
2. Control valve defective
2. Replace control valve
Gas odor during combustion
1. Gas leak. See Warning statement 1. Locate and correct all leaks (see Check-
above
ing Gas Connections, pages 19 and 20)
Dark residue on logs or inside of burner 1. Improper log placement
system
1. Properly locate logs (see Installing Logs,
Lava Rock, and Glowing Embers, page 22)
2. Clean out air holes at burner inlets. Pe-
riodically repeat as needed
2. Air holes at burner inlet blocked
3. Burner flame holes blocked
3. Remove blockage or replace burner
105501
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
REPLACEMENT
PARTS
WIRING DIAGRAM
CAUTION:Labelallwiresprior
to disconnection when servicing
controls.Wiringerrorscancause
improper and dangerous opera-
tion. Verify proper operation af-
ter servicing.
Note: Use only original replacement parts.
Thiswillprotectyourwarrantycoveragefor
parts replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product.
If they can not supply original replacement
part(s), call DESA International’s Techni-
cal Service Department at 1-800-DESA
LOG (1-800-337-2564).
Variable
Fan Switch
(N.O.)
Fan Switch
1
Off
Black
2
WhencallingDESAInternational,haveready
• your name
• your address
On
• model and serial numbers of your burner
system and stove
• how burner system or stove was malfunc-
Blue
110/115
V.A.C.
tioning
Black
Blower
Motor
• type of gas used (propane/LP or natural
gas)
• purchase date
White
Green
Usually, we will ask you to return the defec-
tive part to the factory.
Figure 61 - Blower Wiring Diagram for Thermostat-Controlled Models
PARTS NOT UNDER
WARRANTY
Contact authorized dealers of this prod-
uct. If they can not supply original re-
placement part(s), call DESA
International’s Parts Department at 1-800-
972-7879 for referral information.
SERVICE HINTS
When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• burner system will not produce speci-
fied heat
WhencallingDESAInternational,haveready
• model number of your burner system and
stove
• propane/LP gas supply might be low
(propane/LP units only)
• the replacement part number
TECHNICAL
SERVICE
When Gas Quality Is Bad
• pilot will not stay lit
• burners will produce flames and soot
• burner system will backfire when lit
You may have further questions about in-
stallation, operation, or troubleshooting. If
so, contact DESA International’s Technical
Service Department at 1-800-DESA LOG
(1-800-337-2564).
Ifyoufeelyourgaspressureistooloworgas
quality is bad, contact your local natural or
propane/LP gas supplier.
You can also visit DESA International’s
technical service web site at
105501
30
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OWNER’S MANUAL
SPECIFICATIONS
CDVBN(A)
16,000-22,000 Btu/hr
Natural
CDVBP(A)
14,000-20,000 Btu/hr
Propane/LP
Piezo
Gas Type
Ignition
Piezo
Manifold Pressure
Minimum Inlet Supply Pressure
Thermal Efficiency
3.5" w.c.
10.0" w.c.
4.5" w.c.
11.0" w.c.
70%
70%
Dimension, Inches/mm (HxWxD)
Stove and Burner System*
26 1/2" x 25" x 25 5/8"
26 1/2" x 25" x 25 5/8"
673.1 x 635 x 650.7mm
23 1/4" x 33 1/4" x 23 1/2"
590.5 x 844.5 x 596.9mm
673.1 x 635 x 650.7mm
23 1/4" x 33 1/4" x 23 1/2"
590.5 x 844.5 x 596.9mm
Carton (Insert Only)
Weight, lbs/kg
Burner System
70 lbs/31.8 kg
75 lbs/34 kg
70 lbs/31.8 kg
75 lbs/34 kg
Shipping
* When installed in Comfort Glow cast iron stove body (CISGA Series and CISCA Series).
HI
ACCESSORIES
TEMP
MAN
LO
AUT
O
ON
Purchase these stove and burner system
accessories from your local dealer. If they
cannotsupplytheseaccessories, callDESA
International’s Sales Department at 1-800-
432-2382. for information. You can also
write to the address listed on the back page
of this manual.
OFF
ST
A
TUS
RECEIVER AND HAND-HELD
THERMOSTAT REMOTE
CONTROL KIT - CGHRCT
SERIES
THERMOSTATICALLY-
CONTROLLED BLOWER KIT
CDA3620T
Provides better heat distribution. Blower
turns off and on automatically, as needed.
Completeinstallationandoperationinstruc-
tions included in this manual.
Allows the burner system to be operated in
a manually or thermostatically-controlled
mode. You can adjust your heat settings and
turn the burner system on or off without
leaving the comfort of your easy chair. (Re-
quires part no. 103284-04 wire harness in-
cluded with burner system.)
MANUAL BLOWER KIT
GA3750
Manual-variable control blower accessory
for both the CDVBN(A) and CDVBP(A)
Series burner systems.
RECEIVER AND HAND-HELD
REMOTE CONTROL KIT
CGHRC SERIES
For all models. Allows the burner system to
be turned on and off conveniently.
105501
31
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CDVBN(A) AND CDVBP(A)
CAST IRON STOVE AND BURNER SYSTEM
ILLUSTRATED
PARTS
BREAKDOWN
3
CDVBN(A)
CDVBP(A)
29
32
12
27
25
26-1
26-2
28
1
19
23
20
21
9
8
4
26-3
26-4
10
4
31
4
13
11
14
16
6
5
30
24
18
2
15
22
17
22
L
O
H
P
L
OF
O
T
ON
7
105501
32
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OWNER’S MANUAL
This list contains replaceable parts used in your burner system. When ordering parts, follow the
instructions listed under Replacement Parts on page 30 of this manual.
PARTS LIST
CDVBN(A)
CDVBP(A)
KEY
NO.
PART NUMBER
DESCRIPTION
QTY.
1
2
3
4
5
6
7
8
105478-02BR
M11084-26
105482-02CK
M11084-39
103587-02CK
099998-01
103284-04
104491-01
104518-01
104527-01
104528-01
H5C4-20B
NTC-4C
105468-01
105487-01
105487-02
105486-01
105486-02
102445-01
102334-01
105523-01
105523-02
104506-01
104506-02
104507-01
104508-01
105493-01
104510-01
105325-01
105492-01
Firebox Assembly
Screw, Hex
Rear Cover
Screw, Hex
Switch Plate
1
2
1
12
1
1
1
1
1
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
18
3
2
1
1
1
On/Off Switch
Wire Harness
Relief Cover
Relief Cover Gasket
Relief Spring
Relief Washer
Hex Head Cap Screw
Locknut
Valve Bracket
Valve, Natural
Valve, Propane/LP
Pilot Assembly, Natural
Pilot Assembly, Propane/LP
Ignitor, Piezo
Palnut Fastener
Burner, Natural
Burner, Propane/LP
Orifice, Natural
Orifice, Propane/LP
Brass Elbow
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Brass Fitting
Aluminum Tubing Assy
Pilot Tubing Assembly
Air Deflector
Log Set
Rear Log
26-1 105773-01
26-2 105773-02
26-3 105773-03
26-4 105773-04
27
28
29
30
31
32
Front Log
Left Log Piece
Right Log Piece
Screw
Screw
Screw
Grate Assembly
Burner Bracket
Glass Door Assy
M10908-2
M12461-50
M12461-62
104555-03CJ
105483-01
105795-01
PARTS AVAILABLE - NOT SHOWN
GA6060
104529-01
M11084-3
Lava Rock
Ember Material
Hex Screw for Blower Bracket
1
1
4
105501
33
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CDVBN(A) AND CDVBP(A)
STOVE CHASSIS
ILLUSTRATED
PARTS
BREAKDOWN
CISC
CISG
1
6
5-4
5-4
4
4
5-1
2
3
5-2
5-3
105501
34
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OWNER’S MANUAL
This list contains replaceable parts used in your stove. When ordering parts, follow the instructions
listed under Replacement Parts on page 30 of this manual.
PARTS LIST
CISC
CISG
KEY PART
NO.
NO.
DESCRIPTION
QTY.
1
2
104968-01
104969-01
104969-02
104174-03
104970-01
104970-02
104971-01
*
Stove Back Panel (Black Only)
Bottom Door (Charcoal)
Bottom Door (Forest Green)
Stove Dropped Bottom
1
1
1
1
1
1
1
1
3
4
One Leg (Charcoal) (4 Total Per Stove)
One Leg (Forest Green) (4 Total Per Stove)
Hardware Kit
Door Hinge Step Bolt With Shoulder (1 Per Unit)
Door Catch Bolt M8 x 1.25 - 55mm Long With Two M8
Hex Nuts (1 Per Unit)
Bottom Floor Bolts M6 x 1 - 25mm Long With Flat Washer
And Lock Washer (4 Per Unit)
Leg Attachment Stud, Headless, Slotted,
M10 x 1.5 - 40mm Long
5
5-1
5-2
*
1
1
4
1
5-3
5-4
7
*
*
104178-01
Back Panel Bolts M6 x 1 - 20mm Long With Flat Washer
And Lock Washer (6 Per Unit)
PARTS AVAILABLE — NOT SHOWN
104108-08
104108-05
Touch-up Spray Paint 12 oz Can (Charcoal)
Touch-up Spray Paint 12 oz Can (Forest Green)
1
1
* Included In Hardware Kit
105501
35
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WARRANTY INFORMATION
KEEP THIS WARRANTY
Model
Serial No.
Date Purchased
Always specify model and serial numbers when communicating with the factory.
We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written
warranty. We make no other warranty, expressed or implied.
COMFORT GLOW LIMITED WARRANTY
DIRECT-VENT BURNER SYSTEM AND STOVE CHASSIS
DESA International warrants this product to be free from defects in materials and components for two (2) years from the date of first
purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.
To make a claim under this warranty the Bill of Sale or cancelled check must be presented.
This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to restore this stove and
burnersystemtoproperoperatingconditionandanallowanceforlaborwhenprovidedbyaDESAAuthorizedServiceCenter. Warranty
part(s) MUST be obtained through authorized dealers of this product and/or DESA International who will provide original factory
replacementparts. Failuretouseoriginalfactoryreplacementpartsvoidsthiswarranty. The stoveandburnersystemMUSTbeinstalled
by a qualified installer in accordance with all local codes and instructions furnished with the unit.
Thiswarrantydoesnotapplytopartsthatarenotinoriginalconditionbecauseofnormalwearandtear, orpartsthatfailor becomedamaged
as a result of misuse, accidents, lack of proper maintenance or defects caused by improper installation. Travel, diagnostic cost, labor,
transportationandanyandallsuchothercostsrelatedtorepairingadefectivestoveandburnersystemwillbetheresponsibilityoftheowner.
TOTHEFULLEXTENTALLOWEDBYTHELAWOFTHEJURISDICTIONTHATGOVERNSTHESALEOFTHEPRODUCT;
THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURA-
TION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE TO TWO (2) YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE;
AND DESA INTERNATIONAL’S LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND
DESA INTERNATIONAL SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or consequential
damages, so the above limitation on implied warranties, or exclusion or limitation on damages may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.
For information about this warranty write:
INTERNATIONAL
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
105501-01
Rev. E
02/00
105501 01
NOT A UPC
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