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

CDVBN(A) AND CDVBP(A)

CAST IRON STOVE AND BURNER SYSTEM

VENTING
INSTALLATION

Continued

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 ma­terial such as masonry block or con­crete, a 7 1/2" diameter hole is accept­able). See Figure 22. The center of the
hole should line up with the center­line of the horizontal rigid vent pipe.
Cut a 10"x10" (254mm x 254mm)
square hole through combustible ex­terior wall (7 1/2" [190mm] diameter
hole if noncombustible). Frame as nec­essary (see Figure 22).

Female
Locking
Lugs

Male
Slots

4. Apply a bead of non-hardening mastic
around the outside edge of the vent cap.
Position the vent cap in the center of
the 7 1/2" or 10" hole on the exterior
wall with the word “UP” on the vent
cap facing up. Insure proper clearance
of 1" to combustibles is maintained. At­tach the vent cap with four wood screws
supplied (see Figure 23).

Note

: Re­place the wood screws with appropri­ate fasteners for stucco, brick, concrete,
or other types of siding.

WARNING: Do not recess vent
termination in to any wall. This
will cause a fire hazard.

For vinyl siding, stucco, or wood ex­terior use vinyl siding standoffs be­tween vent cap and exterior wall. The
vinyl siding standoff prevents exces­sive heat from melting the vinyl sid­ing material. Bolt the vent cap to the
standoff. Apply non-hardening mastic
around outside edge of the standoff in­stead of the vent cap assembly. Use
wood screws provided to attach the
standoff. See Figure 24.

5. Slide the wall thimble over the vent pipe
before connecting the horizontal run to
the vent cap (see Figure 25).

6. Carefully move the stove with vent as­sembly 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.

7. Slide the wall thimble against the inte­rior wall surface and attach with screws
provided (see Figure 25).

Cut Vinyl Siding
Away to Fit
Standoff

Standoff

Wood
Screw

UP

Nut

Figure 24 - Installing Vinyl Siding Standoff

Apply Mastic
to All Four
Sides

Bolt

Vent
Cap

Rigid Vent Pipe

Figure 21 - Vent Pipe Connections

Vent Opening

Combustible Wall

10"

(254mm)

10"

(254mm)

(Framing

Vent Opening

Noncombustible Wall

7 1/2"

(190mm)

Figure 22 - Vent Opening Requirements

Detail)

Apply Mastic
to All Four
Sides

UP

Wood
Screw

Vent Cap

Figure 23 - Installing Horizontal Vent Cap

12

Interior Wall
Surface

Wall
Thimble

Vent Cap
(Horizontal
Termination)

Figure 25 - Connecting Vent Cap with
Horizontal Vent Pipe

Screw

Horizontal
Vent Pipe

105501

OWNER’S MANUAL

UP

UP

VENTING
INSTALLATION

Continued

Horizontal Termination
Configurations

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 mini­mum/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 terminations require 1/4" rise per
12" of horizontal run.

UP

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)

60" min. 60" max.
72" min. 84" max.
89" min. 20' max.

Note:

This configuration for use with

corner installation.

Figure 27 - Horizontal Termination Configuration for Rigid Venting Using One

°

Elbow

90

Horizontal Venting

Vertical (V) Horizontal (H)

30" min. 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. 2' max. 6' max.
6' min. 4' max. 12' max.
7' min. 6' max. 18' max.
8' min. 8' min. 20' max.

20' max. 8' max. 20' max.

Figure 28 - Horizontal Termination Configuration for Rigid Venting Using Two 90
Elbows

Continued

°

105501

13

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' max.
6' min. 12' max.
7' min. 18' max.
8' min. 20' max.

20' max. 20' max.

Figure 29 - Horizontal Termination Configuration for Rigid Venting Using Two 90° Elbows with Termination at 90° with Stove

INSTALLATION FOR
VERTICAL TERMINATION

NOTICE: Use rigid pipe only. Flex
venting is not to be used with a
vertical termination.

1. Determine the route your vertical vent­ing will take. If ceiling joists, roof
rafters, or other framing will obstruct
the venting system, consider an offset
(see Figure 30) to avoid cutting
loadbearing members.
cial attention to these installation in­structions for required clearances (air
space) to combustibles when passing
through ceilings, walls, roofs, enclo­sures, attic rafters, etc. Do not pack
air spaces with insulation. Also note
maximum vertical rise of the venting
system and any maximum horizontal
offset limitations. Offsets must fall
within the parameters shown in Fig­ure 18 on page 9.

Note:

Pay spe-

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.

Drop a plumb line from the inside of
the roof to the locating hole in the ceil­ing. Mark the center point where the
vent will penetrate the roof. Drill a
small locating hole at this point.

Roof
Flashing

Wall Strap

45° Elbow

Ceiling Firestop

Figure 30 - Offset with Wall Strap and 45
Elbows

Flat Ceiling Installation

1. Cut a 10" square hole in the ceiling us­ing the locating hole as a center point.
The opening should be framed to
10"x10" (254mm x 254mm) inside di­mensions, 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 ceil­ing 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).

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 warn­ing statement on page 10. Be sure all
pipe and elbow connections are fully
twist-locked (see Figure 21, page 12).

°

14

105501

OWNER’S MANUAL

VENTING
INSTALLATION

Continued

If area above is a room, install firestop
above framed hole.

If area above is not a room, install
firestop below framed hole.

Figure 31 - Installing Firestop

3. Cut a hole in the roof using the locating
hole as a center point. (Cover any ex­posed open vent pipes before cutting
hole in roof.) The 10"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 combus­tible materials. Frame the opening as
shown in Figure 22 on page 12.

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 in­stead of 90° elbows. The 45° elbow of­fers less restriction to the flow of the
flue gases and intake air.

5. Place the flashing over the pipe
section(s) extending through the roof.
Secure the base of the flashing to the
roof and 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.

6. Continue to add pipe sections until the
height of the vent cap meets the mini­mum building code requirements de­scribed in Figure 18 on page 9.
You must increase vent height for steep
roof pitches. Nearby trees, adjoining
rooflines, steep pitched roofs, and other
similar factors may cause poor draft or
down-drafting in high winds. Increasing
the vent height may solve this problem.

7. Twist-lock the vent cap onto the last
section of vent pipe and seal outer pipe
connection with high temperature sili­cone 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. You may frame and sheetrock the enclo­sure with standard construction material. Make
sure and meet the minimum allowable clear­ances to combustibles. Do not fill any of the
required air spaces with insulation.

Note:

Cathedral Ceiling Installation

1. Remove shingles or other roof cover-

ing as necessary to cut the rectangular
hole for the support box. Mark the out­line of the cathedral ceiling support box
on the roof sheathing using the locat­ing hole as a center point.

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. 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 in­side of the support box.

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

.

Level

Cathedral ceiling
support box

2" minimum below

finished ceiling

Cut hole 1/8" larger than support
box when projected onto roofline

Figure 32 - Cathedral Ceiling Support
Box Installation

Non-hardening Mastic under all
edges of support box before nailing

Figure 33 - Installed Cathedral Ceiling
Support Box

Continued

105501

15

CDVBN(A) AND CDVBP(A)

CAST IRON STOVE AND BURNER SYSTEM

VENTING
INSTALLATION

Continued

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 sili­cone sealant as specified in the second warn­ing statement on page 10.

Note:

Install restrictor
into 4" collar of burner
system as shown.

Venting with Two 90° Elbows

Vertical (V) Horizontal (H1) +

Horizontal (H2)

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

5' min. 2' max.
6' min. 4' max.
7' min. 6' max.
8' min. 8' max.

20' max. 8' max.

Venting with One 90° Elbow

Vertical (V) Horizontal (H)

5' min. 2' max.
6' min. 4' max.
7' min. 6' max.
8' min. 8' max.

20' max. 8' max.

Figure 34 - Vertical Rigid Venting
Configuration Using One 90

°

Elbow

Venting with Two 90° Elbows

Vertical (V1) Horizontal (H)

5' min. 6' max.
6' min. 12' max.
7' min. 18' max.
8' min. 20' max.

Note:

Vertical (V1) +

Vertical (V2) = 20' max.

Note:

Install restrictor
into 4" collar of burner
system as shown.

Figure 36 - Vertical Rigid Venting Configuration Using Two 90° Elbows

16

105501

OWNER’S MANUAL

VENTING
INSTALLATION

Continued

Note:

Install
restrictor into 4"
collar of burner
system as shown.

RVKBK Kit Shown

Vertical V enting

V = 40' max.

Figure 37 - Vertical Rigid Venting
Configuration With No Horizontal Run

HIGH ALTITUDE
INSTALLATION

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 eleva­tions from 0-4500 feet.

When installing this stove at an elevation
above 2000 feet (in the USA), you may need
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 com­pany for proper orifice size identification.

When installing this stove at an elevation
above 4500 feet (in Canada), check with
local authorities.

Consult your local gas company to help de­termine the proper orifice for your location.

For assistance with any high altitude instal­lation contact DESA International’s Tech­nical Service Department at 1-800-DESA­LOG (1-800-337-2564).

PARTS LISTS FOR VENTING
KITS AND COMPONENTS

Comfort Glow Rigid Venting

Number Description

CGFVKBK Ground Floor Rigid Vent Kit

Includes: 7" x 60° Elbow, Ex­tended 7" Adjustable Pipe (7­12"), Horizontal Termination,
Wall Thimble and 14 Screws

CBVKBK Basement Rigid Vent Kit

Includes: 7" x 30° Elbow, 7" x 4'
Pipe, 7" x 90° Elbow, 7" Adjust­able Pipe (7-12"), Wall Thimble,
Horizontal Termination, RTV
Silicone and 20 Screws

CSVKBK Snorkel Rigid Vent Kit

Includes: 7" x 30° Elbow, 7" x 4'
Pipe, 7" x 90° Elbow, 7" Adjust­able Pipe (7-12"), Wall Thimble,
36" Snorkel Termination, RTV
Silicone and 28 Screws

CRVKBK Roof Rigid Vent Kit

Includes: Flue Restrictor, Storm
Collar, 7" x 30° Elbow, 7" x 4'
Pipe, 7" x 2' Pipe, 7" Adjust­able Pipe (7-12"), Firestop Sup­port, Roof Flashing, RTV Sili­cone, Vertical Termination, and
26 screws

CD1000BK7" x 12" Black Coaxial Pipe

(1 pk)

CD1010BK7" x 24" Black Coaxial Pipe

(1 pk)

CD1020BK7" x 48" Black Coaxial Pipe

(1 pk)

CD1030BK7" Adjustable (7-12")Black

Coaxial Pipe (1 pk)

CD1050BK7" x 6" Black Coaxial Pipe

(1 pk)
CD2000BK7" X 90° Elbow (1 pk)
CD2010BK7" x 45° Elbow (1 pk)
CD2020BK7" x 30° Elbow
CD2030BK7" x 60° Elbow

Comfort Glow Rigid Venting

(Cont.)

Number Description

CD3000 Wall Strap/Offset Support

(1 pk)

CD3010 Storm Collar (1 pk)
CD3020 Wall Thimble (1 pk)

CD3040 Vertical Termination Cap (1 pk)
CD3050 Vertical Restrictor (1 pk)
CD3060 Ceiling Firestop/Support

(1 pk)

CD3070 Rectangular Horizontal Rigid

Vent Termination Cap

CD3090 Cathedral Ceiling Support

Box
CD4000 Roof Flashing 6/12-9/12
CD4010 Roof Flashing 9/12-12/12
CD5000 Wood/Vinyl Siding Standoff

(1 pk)

SIMPSON DURA-VENT
GS 4" x 6 5/8 " (Black Pipe)

Number Description
Available from DESA International:

SD2040B Simpson Dura-Vent GS

30° Elbow (6 pcs.)

SD2050B Simpson Dura-Vent GS

60° Elbow (6 pcs.)

Available from Simpson Dura-Vent only:

902B 7" x 48" Pipe
903B 7" x 36" Pipe
904B 7" x 24" Pipe
906B 7" x 12" Pipe
907B 7" x 9" Pipe
908B 7" x 6" Pipe

5

911B 7" Adjustable (11"-14
940 Wall Thimble
941 Cathedral Ceiling Support Box
943 Roof Flashing 0/12-6/12
943S Roof Flashing 7/12-12/12
945B 7" x 45° Elbow
950 Vinyl Siding Standoff
953 Storm Collar
963 Ceiling Firestop
981 36" Snorkel Termination
984 Horizontal Termination Vent Cap
988 Wall Strap
990B 7" x 90° Elbow
991 Vertical High Wind Termination

/8") Pipe

105501

17

CDVBN(A) AND CDVBP(A)

CAST IRON STOVE AND BURNER SYSTEM

STOVE AND
DIRECT-VENT
BURNER SYSTEM
INSTALLATION

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.

INSTALLING GAS PIPING TO
STOVE/BURNER SYSTEM
LOCATION

WARNING: A qualified ser­vice person must connect burner
system to gas supply. Follow all
local codes.

CAUTION: For propane/LP
units, never connect burner sys­tem directly to the propane/LP
supply. This burner system re­quires an external regulator (not
supplied). Install the external
regulator between the burner sys­tem and propane/LP supply.

Installation Items Needed

Before installing stove and burner system,
make sure you have the items listed below.

• external regulator (supplied by installer)

• piping (check local codes)

• sealant (resistant to propane/LP gas)

• manual shutoff valve *

• test gauge connection *

• sediment trap

• tee joint

• pipe wrench

• approved flexible gas line with gas con­nector (if allowed by local codes) (not
provided)

* An A.G.A. design-certified manual shutoff
valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Pur­chase the A.G.A. design-certified manual
shutoff valve from your dealer.

For propane/LP connections only, the in­staller must supply an external regulator.
The external regulator will reduce incoming
gas pressure. You must reduce incoming
gas pressure to between 11 and 14 inches of
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

38. Pointing the vent down protects it from
freezing rain or sleet.

CAUTION: Use only new,
black iron or steel pipe. Inter­nally-tinned copper tubing may
be used in certain areas. Check
your local codes. Use pipe of 1/2"
diameter or greater to allow
proper gas volume to burner sys­tem. If pipe is too small, undue
loss of pressure will occur.

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).

IMPORTANT:

(manual shutoff valve) in an accessible lo­cation. 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.

A.G.A. Design-Certified Manual
Shutoff Valve with 1/8" NPT Tap*

* 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

Install main gas valve

Approved Flexible
Gas Line

3" Minimum

Apply pipe joint sealant lightly to male
threads. This will prevent excess sealant
from going into pipe. Excess sealant in pipe
could result in clogged burner system valves.

CAUTION: Use pipe joint seal­ant that is resistant to liquid pe­troleum (LP) gas.

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, burner system may not run properly.

Propane/LP
Supply Tank

External
Regulator

Vent
Pointing
Down

Figure 38 - External Regulator with Vent
Pointing Down (Propane/LP Only)

Natural - From Gas
Meter (5" W.C. to

10.5" W.C. Pressure )
Propane/LP - From

External Regulator
(11" W.C. to 14" W.C.
Pressure)

Cap Pipe Nipple Tee Joint

Sediment Trap/Drip Leg

18

105501

OWNER’S MANUAL

STOVE AND
DIRECT-VENT
BURNER SYSTEM
INSTALLATION

Continued

CONNECTING STOVE/
BURNER SYSTEM TO GAS
SUPPLY

Installation Items Needed

• 5/16" hex socket wrench or nut-driver

• sealant (resistant to propane/LP gas, not
provided)

1. Open lower door panel.

2. Route flexible gas line (provided by

installer) from manual shutoff valve to
burner system. Route flexible gas sup­ply line through slot in stove bottom
and attach to valve.

3. Check all gas connections for leaks. See

Checking Gas Connections.

To Flare Fitting on
Control Valve

Flexible Gas Line from
Manual Shutoff Valve
Provided by Installer

Figure 40 - Flexible Gas Line

Manual Shutoff Valve

To Gas Supply
(Natural)

To External
Regulator
(Propane/LP)

CHECKING GAS
CONNECTIONS

WARNING: Test all gas pip­ing and connections for leaks
after installing or servicing. Cor­rect all leaks at once.

WARNING: Never use an open
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.

Pressure Testing Gas Supply
Piping System

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

2. Cap off open end of gas pipe where
manual shutoff valve was connected.

3. Pressurize supply piping system by ei­ther opening propane/LP supply tank
valve for propane/LP gas
tem
on or near gas meter for natural gas
burner system

4. Check all joints of gas supply piping
system. Apply commercial leak test so­lution to all gas joints. Bubbles forming
show a leak. Correct all leaks at once.

5. Reconnect
shutoff valve to gas supply. Check re­connected fittings for leaks.

burner system

or opening main gas valve located

, or using compressed air.

burner system

gas regulator.

burner sys-

and manual

105501

Continued

19

CDVBN(A) AND CDVBP(A)

ON

POSITION

OFF

POSITION

CAST IRON STOVE AND BURNER SYSTEM

STOVE AND
DIRECT-VENT
BURNER SYSTEM
INSTALLATION

Continued

Test Pressures Equal To or Less Than 1/2
PSIG (3.5 kPa)

1. Close manual shutoff valve (see
Figure 41).

2. Pressurize supply piping system by ei­ther opening propane/LP supply tank
valve for propane/LP gas burner sys­tem or
on or near gas meter for natural gas
burner system, or using compressed air.

3. Check all joints from propane/LP sup­ply 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.

Pressure Testing Burner
System Gas Connections

1. Open manual shutoff valve (see Fig­ure 41).

2. Open propane/LP supply tank valve for
propane/LP burner system or main gas
valve located on or near gas meter for
natural gas burner system.

3. Make sure control knob of burner sys­tem is in the OFF position.

4. Check all joints from manual shutoff
valve to thermostat gas valve (see Fig­ure 42 for propane/LP or Figure 43 for
natural). Apply commercial leak test so­lution to all gas joints. Bubbles forming
show a leak. Correct all leaks at once.

5. Light burner system (see Operating
Stove with Burner System, pages 23
through 25). Check all other internal
joints for leaks.

6. Turn off burner system (see To Turn Off
Gas to Appliance, page 23).

opening main gas valve located

Open

Manual
Shutoff
Valve

Closed

Figure 41 - Manual Shutoff Valve

Manual
Shutoff
Valve

Gas Valve

Figure 42 - Checking Gas Joints for Propane/LP Gas Burner System

Manual
Shutoff
Valve

Gas Meter

Gas Valve

Figure 43 - Checking Gas Joints for Natural Gas Burner System

Propane/
LP Supply
Tank

20

105501

OWNER’S MANUAL

STOVE AND
DIRECT-VENT
BURNER SYSTEM
INSTALLATION

Continued

INSTALLING OPTIONAL
WIRELESS HAND-HELD
REMOTE CONTROL
ACCESSORIES - CGHRC
AND CGHRCT SERIES

Installing Remote Receiver

1. Open bottom door on stove body and
locate the switch plate on the left of the
valve bracket.

2. Unscrew switch plate (see Figure 44).

3. Disconnect wires from THTP and TH
on control valve that lead to the switch
(see Figure 45). Discard switch plate,
screws, and nuts.

4. Install battery into receiver battery clip
and connect to terminals (see Figure 46).

5. Place receiver into valve bracket and
align holes (see Figure 47).

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).

Receiver

Terminal
Wires

Battery
Clip

9-Volt Battery

Figure 46 - Installing Battery in Receiver

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Figure 47 - Installing Remote Receiver

Installing 9-Volt Battery in Hand­Held Remote Control Unit

1. Remove battery cover on back of re­mote control unit

2. Attach terminal wires to a 9-volt bat­tery (not included). Place battery into
the battery housing.

3. Replace battery cover onto remote con­trol unit.

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
panel on stove body.

CAUTION: Do not operate this
burner system with a broken
glass door panel or without the
glass door panel securely in
place. For replacement part in­formation see

Parts

, page 30.

1. Remove 2 bolts from bottom of stove
and one from the top of stove to remove
front panel (see Figure 49).

2. Remove the screws from the 2 tabs at the
top of the glass door while holding door
securely keeping it from falling forward.

3. Grasp door by both sides and ease it
upward off of the lower bracket (see
Figure 50).

4. T o replace glass door, follow the above
instructions in reverse.

Replacement

Bolt

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Figure 44 - Removing Switch Plate

To Control
Switch or
Optional
Accessory

Figure 45 - Control Valve Terminals

105501

Remote
Control Unit

Terminal

Battery
Cover

Wires

9-Volt
Battery

Battery Housing

Figure 48 - Installing Battery in Hand­Held Remote Control Unit

21

Bolt

Stove Front
Panel

Figure 49 - Removing Front Panel from
Stove

Screw

Glass
Door

Figure 50 - Removing Glass Door from
Burner System Insert

Continued

CDVBN(A) AND CDVBP(A)

CAST IRON STOVE AND BURNER SYSTEM

STOVE AND
DIRECT-VENT
BURNER SYSTEM
INSTALLATION

Continued

INSTALLING LOGS, LAVA
ROCK AND GLOWING
EMBERS

WARNING: Failure to posi­tion the parts in accordance with
these diagrams or failure to use
only parts specifically approved
with this burner system may re­sult in property damage or per­sonal injury.

Each log is marked with a number. These
numbers will help you identify the log when
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).

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.

5. Place log #4 (right piece) onto the front
right part of the grate making sure the
notches fit over the prong of the grate
(see Figure 54).

2

Figure 52 - Installing Log No. 2

3

Figure 53 - Installing Log No. 3

4

6. Place lava rock along sides and front
of inside of burner system bottom. It is
not necessary to use all of the lava rock
provided.

NOTICE: Do not put lava rock on
burner or under burner. Placing
lava rock on burner could cause
performance problems.

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 ap­pearance as the flame touches the em­ber 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.

8. Replace the glass door and stove front.
See Removing/Replacing Glass Door,
page 21.

WARNING: The glass door
must be securely in place before
running this burner system. Do
not run this burner system if glass
is missing or broken.

1

Figure 51 - Installing Log No. 1

Figure 54 - Installing Log No. 4

22

Figure 55 - Placing Ember Material on
Burner

105501

OWNER’S MANUAL

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OPERATING STOVE
WITH BURNER
SYSTEM

FOR YOUR SAFETY

READ BEFORE

LIGHTING

WARNING: If you do not fol­low these instructions exactly, a
fire or explosion may result caus­ing property damage, personal
injury or loss of life.

A. This appliance has a pilot which must

be lighted by hand. When lighting the
pilot, follow these instructions exactly .

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.

WHA T TO DO IF YOU 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 y our gas supplier
from a neighbor’s phone. Follow
the gas supplier’s instructions.

C. Use only your hand to push in or turn

the gas control knob. Ne ver use tools.
If the knob will not push in or turn
by hand, don't try to repair it, call a
qualified service technician. For ce or
attempted repair may result in a f ire
or explosion.

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 re­place any part of the control sys­tem and any gas control which has
been under water.

LIGHTING

INSTRUCTIONS

1. STOP! Read the safety information
in column one.

2. Open lower panel.

3. Turn ON/OFF switch to “OFF”.

4. Turn off all electric power to the
burner system.

5. Push in gas control knob slightly and
turn clockwise to “OFF”.

6. Wait f ive (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 in­formation in column one. If you don't
smell gas, go to the next step.

7. The pilot is located by the main
burner and should not require ac­cessing for lighting.

8. T urn gas control knob counter clock­wise to “PILOT”.

9. Push in gas control knob all the way
and hold. Immediately light the pi­lot 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.

• If gas control knob does not pop

up when released, stop and im­mediately call your service tech­nician or gas supplier.

• If the pilot will not stay lit after sev-

eral tries, turn the gas control knob
to “OFF” and call your service
technician or gas supplier.

10. Turn gas control knob counterclock­wise to “ON”.

11. Turn on all electric power to the
burner system.

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.

14. Close lower panel.

TO TURN OFF GAS

TO APPLIANCE

1. Open lower panel.
2a. Turn ON/OFF switch to “OFF”.
2b. If Using Optional Hand-Held Re-

mote: Set selector switch in the OFF
position to prevent draining battery.

3. Turn off all electrical power to the
appliance if service is to be performed.

4. Push in gas control knob slightly and
turn clockwise to “OFF”.

5. Close lower panel.

Shutting Off Burners Only (pilot
stays lit)

You may shut off the burners and keep
the pilot lit by doing one of the following:

1. Turn gas control knob clockwise

to the PILOT position.

2. Set selector switch in the OFF position.

Variable
Control Knob

Piezo Ignitor

Figure 56 - Control Valve

Gas Control
Knob

MANUAL LIGHTING

PROCEDURE

1. Remove glass door (see Removing/
Replacing Glass Door, page 21).

2. Follow steps 1 through 8 under Light­ing Instructions.

3. Depress gas control knob and light
pilot with match.

4. Keep gas control knob pressed in f or
30 seconds after lighting pilot. Af­ter 30 seconds, release gas control
knob. Now follow steps 10 through
14, column 2.

5. Replace glass door (see Removing/
Replacing Glass Door, page 21).

105501

Continued

23

CDVBN(A) AND CDVBP(A)

CAST IRON STOVE AND BURNER SYSTEM

OPERATING STOVE
WITH BURNER
SYSTEM

Continued

OPTIONAL REMOTE

OPERATION

Note:

All remote control accessories must
be purchased separately (See Accessories
on page 31). Follow instructions included
with the remote control.

Thermostat Control Operation

(Optional CGHRCT Only) The thermo­stat control setting on the remote control
unit can be set to any comfort level be­tween HI and LO. The burners will turn
on and off automatically to maintain the
comfort level you select. The ideal comfort
setting will vary by household depending
upon the amount of space to be heated, the
output of the central heating system, etc.

NOTICE: You must light the pilot
before using the hand-held re­mote control unit. See

Instructions,

page 23.

1. After lighting, let pilot flame burn for

about one minute. Turn ga s control
knob on the control valve to ON posi­tion. T urn variable control knob any­where between HI and LO. Slide the
selector switch to the REMOTE posi­tion.

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.

IMPORTANT:

Do not leave the se­lector switch in the REMOTE posi­tion when the pilot is not lit. This will
drain the battery.

IMPORTANT:

Be sure to press the
ON/OFF buttons on the hand-held
remote control unit for up to 3 sec­onds to assure proper operation.

Lighting

CGHRC Series Operation:

2a. Press the ON/OFF b utton to turn the

burners on and off. When turning
burners off, the pilot will remain lit.

CGHRCT Series Operation:

2b. Select the MAN (manual) or AUTO

button on the hand-held remote con­trol 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.

• In auto mode, the r oom tempera­ture is controlled by the thermo­stat in the hand-held remote con­trol unit. To increase the room
temperature, press the top arrow
of the TEMP button. To lower the
room temperature, press the bot­tom arrow of the TEMP button.
At higher settings the burner sys­tem will run more.

Selector Switch in
Remote Position
(Optional Remote
Control)

ON
OFF
REMOTE

Figure 57 - Setting the Selector Switch,
Gas Control Knob, and Variable Control
Knob for Remote Operation

Shows Temperature
Setting

Allows Burners to be
Turned On and Off
with the Hand-Held
Remote Unit

The Burner System
will Automatically
Cycle between Pilot
and the Heat Setting
that has been
Selected

Figure 58 - Hand-Held Thermostat Remote Control Unit Selections
(CGHRCT Only)

Gas Control Knob
in On Position

O

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O

OFF

L

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Variable Control Knob

HI

TEMP

LO

MAN ON

AUTO OFF

STATUS

ON

IMPORTANT:

has been specially engineered to take
an air temperature sample every 5.5
minutes in auto mode. It will not re­spond immediately to the tempera­ture setting being turned up or down.

IMPORT ANT :

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.

3. Use the ST A TUS button on the hand­held remote control unit to see the
operation mode being used and the
temperature setting selected. A red
light will come on beside the opera­tion mode being used.

4. To turn the burners off when oper­ating 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.
pilot off, manually turn the gas con­trol knob on the burner system to the
OFF position.

Increases Room
Temperature

Decreases Room
Temperature

Turns Burners On
and Off

Shows Current
Operation Mode

This remote control

The hand-held remote

IMPORT ANT :

T o turn the

24

105501

OWNER’S MANUAL

OPERATING STOVE
WITH BURNER
SYSTEM

Continued

OPERATING

OPTIONAL BLOWER

ACCESSORY

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.

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.

Note for CDA3620T Only:

using CDA3620T blower with optional
remote control thermostat for the burner
system, your burner system and blower
will not turn on and off at the same time.
The burner system may run for several
minutes before the blower turns on. 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.

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.

If you are

INSPECTING
BURNERS

Check pilot flame pattern and burner flame
patterns often.

PILOT ASSEMBLY

The pilot assembly is factory preset for the
proper flame height. Alterations may have
occurred during shipping and handling. Call
a qualified service person to readjust the
pilot if necessary.

The height of the thermopile must be 3/8" to
1/2" above the pilot flame as shown in Figure

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.

If your pilot assembly does not meet these
requirements:

• turn burner system off (see To Turn Off
Gas to Appliance, page 23)

• see Troubleshooting, pages 27 through 29

Thermopile

3/8" to 1/2"

Pilot Burner

1/8"

Thermocouple

Piezo Ignitor

BURNER FLAME PATTERN

Burner flames will be steady; not lifting or
floating. Flame patterns will be different
from unit to unit and will vary depending on
installation type and weather conditions.

If the vent configuration is installed incor­rectly, the flames will lift or "ghost". This
can be dangerous. Inspect the flames after
installation to ensure proper installation and
performance.

Figure 60 shows a typical flame pattern. If
burner flame pattern differs from that
described:

• turn burner system off (see To Turn Off
Gas to Appliance, page 23)

• see Troubleshooting, pages 27 through 29

Figure 60 - Typical Flame Pattern

105501

Figure 59 - Pilot Assembly

25

CDVBN(A) AND CDVBP(A)

CAST IRON STOVE AND BURNER SYSTEM

CLEANING AND
MAINTENANCE

WARNING: Turn off burner sys-

tem and let cool before cleaning.

CAUTION: You must keep con­trol areas, burners, and circulat­ing air passageways of burner
system and stove clean. Inspect
these areas of burner system and
stove before each use. Have
burner system and stove in­spected yearly by a qualified ser­vice person. Burner system and
stove may need more frequent
cleaning due to excessive lint from
carpeting, bedding material, pet
hair, etc.

GLASS DOOR

WARNING: Handle glass
door panel with care. Do not
strike, slam, or otherwise abuse
glass. Do not operate burner sys­tem with the glass door removed,
cracked, or broken.

WARNING: Do not use abra­sive cleaners as this may damage
glass. Use a nonabrasive house­hold glass cleaner to clean glass.
Do not clean glass when hot.

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, non­abrasive household cleaner and warm water
after the first two weeks of operation. There­after, clean the glass two or three times
during each heating season, depending on
the usage and circumstances present. Refer
to Removing/Replacing Glass Door on page
21 of this manual when removing glass door
for cleaning.

WARNING: Only parts sup­plied by the manufacturer should
be used when replacing broken
or damaged glass door panel (see

Replacement Parts

glass door panel is a complete
unit. No substitute materials may
be used.

CAUTION: Wear gloves and
safety glasses while handling or
removing broken glass. Do not
remove if glass is hot. Keep chil­dren and pets away from glass.

If glass has been broken, carefully remove
glass door (see Removing/Replacing Glass
Door, page 21). Vacuum all glass pieces
with a shop vac.

CAUTION: Do not vacuum if
pieces are hot.

Use only the ceramic glass door replace­ment intended for this burner system (see
Replacement Parts, page 30 for detail on
ordering). No substitutions may be made.
See Removing/Replacing Glass Door, page
21 for instructions for replacing glass door.

WARNING: Do not operate
burner system with the glass door
removed, cracked, or broken.

, page 30). This

PILOT AND BURNERS

• Remove ember material before cleaning
burners and replace when cleaning is
complete.

• 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.

LOGS

• If you remove logs for cleaning, refer to

Installing Logs, Lava Rock, and Glowing
Embers, page 22, to properly replace logs.

• Use a vacuum cleaner to remove any car­bon buildup on logs.

• Replace log(s) if broken. See Replace-
ment Parts on page 30.

• Replace ember material periodically as
needed. See Replacement P arts on page 30.

VENTING SYSTEM

Conduct annual inspection of the venting
system following these guidelines:

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 imme­diately by a qualified service person.

2. Remove the vent cap and shine a flash-

light into the vent. Remove any foreign
material.

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 be­ing exposed to cold weather.

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.

26

105501

OWNER’S MANUAL

TROUBLESHOOTING

Note:

For additional help, visit DESA

International’s technical service web
site at www.desatech.com.

Note:

All troubleshooting items are listed in

order of operation.

OBSERVED PROBLEM

When ignitor button is pressed, there is no
spark at pilot

When ignitor button is pressed, there is
spark at pilot but no ignition

WARNING: Turn off burner
system and let cool before ser­vicing. Only a qualified service
person should service and repair
burner system or stove.

POSSIBLE CAUSE

1. Ignitor electrode not connected to igni­tor cable

2. Ignitor cable pinched or wet

3. Piezo ignitor nut is loose

4. Broken ignitor cable

5. Bad piezo ignitor

6. Ignitor electrode broken

7. Ignitor electrode positioned wrong

1. Gas supply turned off or manual shutoff
valve closed

2. Gas control knob not in PILOT position

3. Gas control knob not pressed in while
in PILOT position

4. Air in gas lines when installed

5. Depleted gas supply (propane/LP mod­els only)

6. Pilot is clogged

7. Gas regulator setting is not correct

CAUTION: Never use a wire,
needle, or similar object to clean
pilot. This can damage pilot unit.

REMEDY

1. Reconnect ignitor cable

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

5. Replace piezo ignitor

6. Replace pilot assembly

7. Replace pilot assembly

1. Turn on gas supply or open manual
shutoff valve

2. Turn gas control knob to PILOT position

3. Press in gas control knob while in PILOT
position

4. Continue holding down gas control
knob. Repeat igniting operation until air
is removed

5. Contact local propane/LP gas company

6. Clean pilot (see Cleaning and Mainte-
nance, page 26) or replace pilot assembly

7. Replace gas control

Pilot lights but flame goes out when control
knob is released

105501

1. Gas control knob not fully pressed in

2. Gas control knob not pressed in long
enough

3. Manual shutoff valve not fully open

4. Pilot flame not touching thermocouple,
which allows thermocouple to cool,
causing pilot flame to go out. This prob­lem could be caused by one or both of
the following:
A) Low gas pressure
B) Dirty or partially clogged pilot

5. Thermocouple connection loose at con­trol valve

6. Thermocouple damaged

7. Control valve damaged

www.desatech.com

27

1. Press in gas control knob fully

2. After pilot lights, keep gas control knob
pressed in 30 seconds

3. Fully open manual shutoff valve

4. A) Contact local gas company

B) Clean pilot (see Cleaning and
Maintenance, page 26) or replace pilot
assembly

5. Hand tighten until snug, then tighten
1/4 turn more

6. Replace thermocouple

7. Replace control valve

Continued

CDVBN(A) AND CDVBP(A)

CAST IRON STOVE AND BURNER SYSTEM

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

Burner does not light after pilot is lit

Delayed ignition burner

Burner backfiring during combustion

Slight smoke or odor during initial operation

Burner system produces a whistling noise
when burner is lit

POSSIBLE CAUSE

1. Burner orifice clogged

2. Inlet gas pressure is too low

3. Thermopile leads disconnected or im­properly connected

4. Thermopile is defective

1. Manifold pressure is too low

2. Burner porting or orifice clogged

1. Burner orifice is clogged or damaged

2. Damaged burner

3. Gas regulator defective

1. Residues from manufacturing processes
and logs curing

1. Turning gas control knob to HI position
when burner is cold

2. Air in gas line

3. Dirty or partially clogged burner orifice

REMEDY

1. Clean burner (see Cleaning and
Maintenance, page 26) or replace burner

orifice

2. Contact local propane/LP or natural gas
company

3. Reconnect leads (see Wiring Diagram,
page 30)

4. Replace thermopile

1. Contact local propane/LP or natural gas
company

2. Clean burner (see Cleaning and Main-
tenance, page 26) or replace burner orifice

1. Clean burner (see Cleaning and
Maintenance, page 26) or replace burner
orifice

2. Replace damaged burner

3. Replace gas control

1. Problem will stop after a few hours of
operation

1. Turn gas control knob to LO position and
let warm up for a minute

2. Operate burner until air is removed from
line. Have gas line checked by local pro­pane/LP or natural gas company

3. Clean burner (see Cleaning and
Maintenance, page 26) or replace burner
orifice

Glass soots

Burner system produces a clicking/ticking
noise just after burners are lit or shut off

Remote does not function

1. Flame impingement on logs

2. Debris around burner air mixer

1. Metal expanding while heating or con­tracting while cooling

1. Battery is not installed or battery power
is low

www.desatech.com

28

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

1. This is common. If noise is excessive,
contact qualified service person

1. Replace 9-volt batteries in receiver and
remote control

105501

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.

OWNER’S MANUAL

IMPORTANT:

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.

Operating burner system where impurities in air exist may create odors. Cleaning

OBSERVED PROBLEM

Burner system produces unwanted odors

Burner system shuts off in use

Gas odor even when control knob is in OFF
position

POSSIBLE CAUSE

1. Gas leak. See Warning statement
above

1. High or gusting winds

2. Low line pressure

3. Pilot is partially clogged

4. Inner vent pipe leaking exhaust gasses
into system

5. Glass too loose and air tight gasket leaks
in corners after usage

6. Bad thermopile or thermocouple

7. Improper vent cap installation

1. Gas leak. See Warning statement

above

2. Control valve defective

REMEDY

1. Locate and correct all leaks (see Check­ing Gas Connections, pages 19 and 20)

1. Burner system has been tested for up to
40mph winds. However, extreme con­ditions may occur. See Lighting Instruc-
tions on page 23

2. Contact local propane/LP or natural gas
company

3. Clean pilot (see Cleaning and Mainte-
nance, page 26)

4. Locate and correct all leaks (see Check-
ing Gas Connections, pages 19 and 20)

5. Tighten glass

6. Replace faulty component

7. Check for proper installation and free­dom from debris or blockage

1. Locate and correct all leaks (see Check-
ing Gas Connections, pages 19 and 20)

2. Replace control valve

Gas odor during combustion

Dark residue on logs or inside of burner
system

105501

1. Gas leak. See Warning statement
above

1. Improper log placement

2. Air holes at burner inlet blocked

3. Burner flame holes blocked

www.desatech.com

29

1. Locate and correct all leaks (see Check­ing Gas Connections, pages 19 and 20)

1. Properly locate logs (see Installing Logs,
Lava Rock, and Glowing Embers, page 22)

2. Clean out air holes at burner inlets. Pe­riodically repeat as needed

3. Remove blockage or replace burner

CDVBN(A) AND CDVBP(A)

CAST IRON STOVE AND BURNER SYSTEM

REPLACEMENT
PARTS

Note:

Use only original replacement parts.

This will protect your warranty coverage for
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 Techni­cal Service Department at 1-800-DESA
LOG (1-800-337-2564).

When calling DESA International, have ready

• your name

• your address

• model and serial numbers of your burner
system and stove

• how burner system or stove was malfunc­tioning

• type of gas used (propane/LP or natural
gas)

• purchase date

Usually, we will ask you to return the defec­tive part to the factory.

PARTS NOT UNDER
WARRANTY

Contact authorized dealers of this prod­uct. If they can not supply original re­placement part(s), call DESA
International’s Parts Department at 1-800­972-7879 for referral information.

When calling DESA International, have ready

• model number of your burner system and
stove

• the replacement part number

TECHNICAL
SERVICE

You may have further questions about in­stallation, operation, or troubleshooting. If
so, contact DESA International’s Technical
Service Department at 1-800-DESA LOG
(1-800-337-2564).

You can also visit DESA International’s
technical service web site at
www.desatech.com.

WIRING DIAGRAM

CAUTION: Label all wires prior
to disconnection when servicing
controls. Wiring errors can cause
improper and dangerous opera­tion. Verify proper operation af­ter servicing.

Variable

Fan Switch

1

Off

110/115

V.A.C.

Figure 61 - Blower Wiring Diagram for Thermostat-Controlled Models

Black

White

Green

2

Black

On

Fan Switch

(N.O.)

Blue

Blower

Motor

SERVICE HINTS

When Gas Pressure Is Too Low

• pilot will not stay lit

• burners will have delayed ignition

• burner system will not produce speci­fied heat

• propane/LP gas supply might be low
(propane/LP units only)

When Gas Quality Is Bad

• pilot will not stay lit

• burners will produce flames and soot

• burner system will backfire when lit

If you feel your gas pressure is too low or gas
quality is bad, contact your local natural or
propane/LP gas supplier.

30

105501

OWNER’S MANUAL

AUTO

MAN

OFF

STATUS

ONLO

HI

TEMP

SPECIFICATIONS

CDVBN(A) CDVBP(A)

16,000-22,000 Btu/hr 14,000-20,000 Btu/hr
Gas Type Natural Propane/LP
Ignition Piezo Piezo
Manifold Pressure 3.5" w.c. 10.0" w.c.
Minimum Inlet Supply Pressure 4.5" w.c. 11.0" w.c.
Thermal Efficiency 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 673.1 x 635 x 650.7mm

Carton (Insert Only) 23 1/4" x 33 1/4" x 23 1/2" 23 1/4" x 33 1/4" x 23 1/2"

590.5 x 844.5 x 596.9mm 590.5 x 844.5 x 596.9mm

Weight, lbs/kg

Burner System 70 lbs/31.8 kg 70 lbs/31.8 kg
Shipping 75 lbs/34 kg 75 lbs/34 kg

* When installed in Comfort Glow cast iron stove body (CISGA Series and CISCA Series).

ACCESSORIES

Purchase these stove and burner system
accessories from your local dealer. If they
can not supply these accessories, call DESA
International’s Sales Department at 1-800­432-2382. for information. You can also
write to the address listed on the back page
of this manual.

MANUAL BLOWER KIT
GA3750

Manual-variable control blower accessory
for both the CDVBN(A) and CDVBP(A)
Series burner systems.

THERMOSTATICALLY­CONTROLLED BLOWER KIT
CDA3620T

Provides better heat distribution. Blower
turns off and on automatically, as needed.
Complete installation and operation instruc­tions included in this manual.

RECEIVER AND HAND-HELD
REMOTE CONTROL KIT
CGHRC SERIES

RECEIVER AND HAND-HELD
THERMOSTAT REMOTE
CONTROL KIT - CGHRCT
SERIES

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. (Re­quires part no. 103284-04 wire harness in­cluded with burner system.)

105501

For all models. Allows the burner system to
be turned on and off conveniently.

31

CDVBN(A) AND CDVBP(A)

CAST IRON STOVE AND BURNER SYSTEM

ILLUSTRATED
PARTS
BREAKDOWN

CDVBN(A)
CDVBP(A)

29

32

26-1

26-2

26-3

26-4

19

23

27

25

3

12

28

1

20
21

4

9

16

8

4

31

14

13

10

11

4

6

5

30

24

2

22

17

18

15

22

O

L

H

I

P

I

L

OFF

O

T

ON

7

32

105501

OWNER’S MANUAL

PARTS LIST

CDVBN(A)
CDVBP(A)

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.

KEY
NO. PART NUMBER DESCRIPTION QTY.

1 105478-02BR Firebox Assembly 1
2 M11084-26 Screw, Hex 2
3 105482-02CK Rear Cover 1
4 M11084-39 Screw, Hex 12
5 103587-02CK Switch Plate 1
6 099998-01 On/Off Switch 1
7 103284-04 Wire Harness 1
8 104491-01 Relief Cover 1
9 104518-01 Relief Cover Gasket 1
10 104527-01 Relief Spring 2
11 104528-01 Relief Washer 2
12 H5C4-20B Hex Head Cap Screw 2
13 NTC-4C Locknut 2
14 105468-01 Valve Bracket 1
15 105487-01 Valve, Natural 1

105487-02 Valve, Propane/LP 1

16 105486-01 Pilot Assembly, Natural 1

105486-02 Pilot Assembly, Propane/LP 1
17 102445-01 Ignitor, Piezo 1
18 102334-01 Palnut Fastener 1
19 105523-01 Burner, Natural 1

105523-02 Burner, Propane/LP 1
20 104506-01 Orifice, Natural 1

104506-02 Orifice, Propane/LP 1
21 104507-01 Brass Elbow 1
22 104508-01 Brass Fitting 2
23 105493-01 Aluminum Tubing Assy 1
24 104510-01 Pilot Tubing Assembly 1
25 105325-01 Air Deflector 1
26 105492-01 Log Set 1
26-1 105773-01 Rear Log 1
26-2 105773-02 Front Log 1
26-3 105773-03 Left Log Piece 1
26-4 105773-04 Right Log Piece 1
27 M10908-2 Screw 18
28 M12461-50 Screw 3
29 M12461-62 Screw 2
30 104555-03CJ Grate Assembly 1
31 105483-01 Burner Bracket 1
32 105795-01 Glass Door Assy 1

105501

PARTS AVAILABLE - NOT SHOWN

GA6060 Lava Rock 1

104529-01 Ember Material 1

M11084-3 Hex Screw for Blower Bracket 4

33

CDVBN(A) AND CDVBP(A)

CAST IRON STOVE AND BURNER SYSTEM

STOVE CHASSIS

ILLUSTRATED
PARTS
BREAKDOWN

CISC
CISG

5-4

1

6

5-4

4

4

5-1

2

3

5-2

34

5-3

105501

OWNER’S MANUAL

PARTS LIST

CISC
CISG

KEY PART
NO. NO. DESCRIPTION QTY.

1 104968-01 Stove Back Panel (Black Only) 1
2 104969-01 Bottom Door (Charcoal) 1

3 104174-03 Stove Dropped Bottom 1
4 104970-01 One Leg (Charcoal) (4 Total Per Stove) 1

5 104971-01 Hardware Kit 1
5-1 * Door Hinge Step Bolt With Shoulder (1 Per Unit) 1
5-2 * Door Catch Bolt M8 x 1.25 - 55mm Long With Two M8

5-3 * Bottom Floor Bolts M6 x 1 - 25mm Long With Flat Washer

5-4 * Leg Attachment Stud, Headless, Slotted,

7 104178-01 Back Panel Bolts M6 x 1 - 20mm Long With Flat Washer

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.

104969-02 Bottom Door (Forest Green) 1

104970-02 One Leg (Forest Green) (4 Total Per Stove) 1

Hex Nuts (1 Per Unit) 1

And Lock Washer (4 Per Unit) 1

M10 x 1.5 - 40mm Long 4

And Lock Washer (6 Per Unit) 1

104108-08 Touch-up Spray Paint 12 oz Can (Charcoal) 1
104108-05 Touch-up Spray Paint 12 oz Can (Forest Green) 1

* Included In Hardware Kit

PARTS AVAILABLE — NOT SHOWN

105501

35

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
burner system to proper operating condition and an allowance for labor when provided by a DESA Authorized Service Center. Warranty
part(s) MUST be obtained through authorized dealers of this product and/or DESA International who will provide original factory
replacement parts. Failure to use original factory replacement parts voids this warranty. The stove and burner system MUST be installed
by a qualified installer in accordance with all local codes and instructions furnished with the unit.

This warranty does not apply to parts that are not in original condition because of normal wear and tear, or parts that fail or become damaged
as a result of misuse, accidents, lack of proper maintenance or defects caused by improper installation. Travel, diagnostic cost, labor,
transportation and any and all such other costs related to repairing a defective stove and burner system will be the responsibility of the owner.

TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT;
THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURA­TION 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

www.desatech.com

105501 01

NOT A UPC

105501-01
Rev. E
02/00