Desa CGB3930PR, CGD3924PR, CGB3924PR User Manual

PREMIUM AGED SPLIT OAK

P

I

L

O

T

O

F

F

O

N

LO

REMOTE

OFF

HI

AND YELLOW FLAME UNVENTED (VENT-FREE)

PROPANE/LP GAS LOG HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

Remote Control

CGD3924PR
CGB3924PR
CGB3930PR

24" and 30" Remote

Controlled Models

(Yellow Flame Model Shown)

Operation Requires
Two (2) 9-Volt Alkaline
Batteries Not Included

®

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.

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

— Do not store or use gasoline or other

flammable vapors and liquids in the
vicinity of this or any other appliance.

assistance or additional information con­sult a qualified installer, 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 instructions.

• If you cannot reach your gas supplier, call
the fire department.

— Installation and service must be per-

formed by a qualified installer, service
agency, or the gas supplier.

WARNING: This appliance is for instal­lation only in a solid-fuel burning ma­sonry or UL127 factory-built fireplace,
or in an approved ventless firebox. It is
design certified for these installations
in accordance with ANSI Z21.11.2.
Exception: Do not install this appliance
in a factory-built fireplace that includes
instructions stating it has not been
tested or should not be used with
unvented gas logs.

WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in
which it is installed. Provisions for adequate combustion and ventilation air must be
provided. Refer to

Air for Combustion and Ventilation

section on page 4 of this manual.

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

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.

Save this manual for future reference.

CGD3924PR, CGB3924PR and CGB3930PR

UNVENTED PROPANE/LP GAS LOG HEATER

SAFETY
INFORMATION

WARNINGS

IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, oper­ate, or service this heater. Im­proper use of this heater can cause
serious injury or death from burns,
fire, explosion, electrical shock,
and carbon monoxide poisoning.

DANGER: Carbon monoxide

poisoning may lead to death!

Carbon Monoxide Poisoning: Early

signs of carbon monoxide poisoning re­semble the flu, with headaches, dizziness,
or nausea. If you have these signs, the heater
may not be working properly. Get fresh air
at once! Have heater serviced. 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 Gas: Propane gas is odorless.
An odor-making agent is added to the gas.
The odor helps you detect a gas leak. How­ever, the odor added to the gas can fade. Gas
may be present even though no odor exists.

Make certain you read and understand all
Warnings. Keep this manual for reference.
It is your guide to safe and proper operation
of this heater.

WARNING: Any change to
this heater 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.

2. Do not place propane supply tank(s)
inside any structure. Locate propane
supply tank(s) outdoors.

3. If you smell gas

• shut off gas supply

• do not try to light any appliance

• do not touch any electrical switch; do

not use any phone in your building

• immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions

• if you cannot reach your gas supplier,
call the fire department

4. This heater shall not be installed in a
bedroom or bathroom.

5. Never install the heater

• in a recreational vehicle

• where curtains, furniture, clothing, or

other flammable objects are less than
36 inches from the front, top, or sides
of the heater

• in high traffic areas

• in windy or drafty areas

6. Before installing in a solid fuel burn­ing fireplace, the chimney flue and fire­box must be cleaned of soot, creosote,
ashes and loose paint by a qualified
chimney cleaner. Creosote will ignite
if highly heated. Inspect chimney flue
for damage. If damaged, operate heater
with flue damper closed.

7. If fireplace has glass doors, never op­erate this heater with glass doors closed.
If you operate heater with doors closed,
heat buildup inside fireplace will cause
glass to burst. Also if fireplace open­ing has vents at the bottom, you must
open the vents before operating heater.

8. You must operate this heater with a fire­place screen in place. Make sure fireplace
screen is closed before running heater.

9. This log heater is designed to be smoke­less. If logs ever appear to smoke, turn
off heater and call a qualified service per­son.

Note:

During initial operation, slight
smoking may occur due to log curing and
heater burning manufacturing residues.

10. Do not allow fans to blow directly into
the fireplace. Avoid any drafts that al­ter burner flame patterns. Ceiling fans
may create drafts that alter burner flame
patterns. Altered burner patterns can
cause sooting.

11. Before using furniture polish, wax, car­pet cleaner, or similar products, turn
heater off. If heated, the vapors from
these products may create a white pow­der residue within burner box or on
adjacent walls or furniture.

12. Do not use a blower insert, heat ex­changer insert or other accessory not
approved for use with this heater.

13. This heater needs fresh, outside air ven­tilation to run properly . This heater has
an oxygen depletion sensor (ODS) pi­lot light safety system. The ODS shuts
down the heater if not enough fresh air
is available. See Air for Combustion
and Ventilation, pages 4 through 6. If
heater keeps shutting off, see Trouble-
shooting, pages 18 through 20.

14. Do not run heater

• where flammable liquids or vapors

are used or stored

• under dusty conditions

15. Do not use this heater to cook food or
burn paper or other objects.

16. Never place any objects on the heater.

17. Heater base assembly becomes very hot
when running heater. Keep children and
adults away from hot surface to avoid
burns or clothing ignition. Heater will
remain hot for a time after shutpdown.
Allow surface to cool before touching.

18. Carefully supervise young children
when they are in the room with heater.
When using the hand-held remote ac­cessory, keep remote selector switch in
the OFF position to prevent children
from turning on burners with hand-held
remote control unit.

19. Do not use heater if any part has been
exposed to or under water. Immediately
call a qualified service technician to in­spect the room heater and to replace any
part of the control system and any gas
control which has been under water.

20. Do not operate heater if any log is bro­ken. Do not operate heater if a log is
chipped (dime-sized or larger).

21. Turn heater off and let cool before ser­vicing, installing, or repairing. Make sure
the remote selector switch is in the OFF
position. Only a qualified service person
should install, service, or repair heater.

22. Make sure the remote selector switch is
in the OFF position when you are away
from home for long periods of time.

23. This heater must not be connected to
any external electrical source.

24. Operating heater above elevations of
4,500 feet may cause pilot outage.

25. T o prevent performance problems, the
use of a propane fuel tank of less than
100 lb. capacity is not recommended.

2

104307

OWNER’S MANUAL

PRODUCT
IDENTIFICATION

Crossover Log

Front Log

Remote
Control

HI

TEMP

MAN

AUTO

ONLO

OFF

STATUS

Piezo
Ignitor

Figure 1 - Vent-Free Gas Log Heater (Logs May Vary By Model)

Remote
Selector
Switch

Flame
Adjustment
Knob

Control Knob

Back
Log

Middle Log

Base Grate

Burner

PRODUCT
FEATURES

Operation

This heater is clean burning. It requires no
outside venting. There is no heat loss out a
vent or up a chimney. Heat is generated by
realistic dancing, yellow flames. This heater
is designed for vent-free operation with flue
damper closed. State and local codes in
some areas prohibit the use of vent-free
heaters.

Safety Pilot

This heater has a pilot with an Oxygen
Depletion Sensor Shutoff System (ODS).
The ODS/pilot is a required feature for vent­free room heaters. The ODS/pilot shuts off
the heater if there is not enough fresh air.

Piezo Ignition System

This heater has a piezo ignitor. This system
requires no matches, batteries, or other
sources to light heater.

LOCAL CODES

Install and use heater with care. Follow all
local codes. In the absence of local codes, use
the latest edition of The National Fuel Gas
Code ANSI Z223, also known as NFPA 54*.

*Available from:
American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

UNPACKING

1. Remove logs and heater base assem­bly from carton.
heater base assembly by burners. This
could damage heater. Always handle
base assembly by grate.

2. Remove all protective packaging ap­plied to logs and heater for shipment.

3. Check all items for any shipping dam­age. If damaged, promptly inform
dealer where you bought heater.

Note:

Do not pick up

104307

3

CGD3924PR, CGB3924PR and CGB3930PR

UNVENTED PROPANE/LP GAS LOG HEATER

AIR FOR
COMBUSTION AND
VENTILATION

WARNING: This heater shall
not be installed in a confined space
or unusually tight construction
unless provisions are provided
for adequate combustion and ven­tilation air. Read the following in­structions to insure proper fresh
air for this and other fuel-burning
appliances in your home.

Today’s homes are built more energy effi­cient than ever. New materials, increased
insulation, and new construction methods
help reduce heat loss in homes. Home owners
weather strip and caulk around windows and
doors to keep the cold air out and the warm air
in. During heating months, home owners
want their homes as airtight as possible.

While it is good to make your home energy
efficient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning
appliances need fresh air for proper com­bustion and ventilation.

Exhaust fans, fireplaces, clothes dryers, and
fuel burning appliances draw air from the
house to operate. You must provide ad­equate fresh air for these appliances. This
will insure proper venting of vented fuel­burning appliances.

Unusually Tight Construction

The air that leaks around doors and win­dows may provide enough fresh air for
combustion and ventilation. However, in
buildings of unusually tight construction,
you must provide additional fresh air.

Unusually tight construction is de­fined as construction where:

a. walls and ceilings e xposed to the

outside atmosphere have a con­tinuous water vapor retarder with
a rating of one perm (6 x 10
per pa-sec-m2) or less with open­ings gasketed or sealed

b. weather stripping has been

added on openable windows and
doors

c. caulking or sealants are applied

to areas such as joints around
window and door frames, be­tween sole plates and floors, be­tween wall-ceiling joints, be­tween wall panels, at penetra­tions for plumbing, electrical, and
gas lines, and at other openings.

If your home meets all of the three
criteria above, you must provide ad­ditional fresh air. See

From Outdoors

If your home does not meet all of the
three criteria above, proceed to

and

Ventilation Air

, page 6.

termining Fresh-Air Flow For Heater
Location

, page 5.

and

-11

kg

De-

Confined Space and Unconfined
Space

The National Fuel Gas Code (ANSI Z2123.1,
1992 Section 5.3) defines a confined space

as a space whose volume is less than 50
cubic feet per 1,000 Btu per hour (4.8 m3 per
kw) of the aggregate input rating of all
appliances installed in that space and an
unconfined space as a space whose volume
is not less than 50 cubic feet per 1,000 Btu
per hour (4.8 m3 per kw) of the aggregate
input rating of all appliances installed in that
space. Rooms communicating directly with
the space in which the appliances are in­stalled*, through openings not furnished
with doors, are considered a part of the
unconfined space.

This heater shall not be installed in a con­fined space or unusually tight construction
unless provisions are provided for adequate
combustion and ventilation air.

* Adjoining rooms are communicating only
if there are doorless passageways or ventila­tion grills between them.

PROVIDING ADEQUATE
VENTILATION

The following is exerpts from National Fuel
Gas Code. NFPA 54/ANSI Z223.1, Section

5.3, Air for Combustion and Ventilation.

All spaces in homes fall into one of the three
following ventilation classifications:

1. Unusually Tight Contruction

2. Unconfined Space

3. Confined Space
The information on pages 4 through 6 will

help you classify your space and provide
adequate ventilation.

4

104307

OWNER’S MANUAL

AIR FOR
COMBUSTION AND
VENTILATION

Continued

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if You Have a Confined or Unconfined Space

Use this work sheet to determine if you have a confined or unconfined space.
Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between

the rooms.

1. Determine the volume of the space (length x width x height).
Length x Width x Height = _________________cu. ft. (volume of space)

Example:

If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of
the space.

2. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.

_________________ (volume of space) ÷ 50 cu. ft. = (Maximum Btu/Hr the space can support)

Example:

3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater __________________Btu/Hr
Gas water heater* __________________Btu/Hr
Gas furnace __________________Btu/Hr
Vented gas heater __________________Btu/Hr
Gas fireplace logs __________________Btu/Hr
Other gas appliances* + __________________Btu/Hr
Total = __________________Btu/Hr
* Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.

4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.

_____________________Btu/Hr (maximum the space can support)
_____________________Btu/Hr (actual amount of Btu/Hr used)

Example:

The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support.
You must provide additional fresh air. Your options are as follows:

A. Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoin-

ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 6.

B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.
C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.

If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no
additional fresh air ventilation.

Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)

2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 51,200 (maximum Btu/Hr the space can support)

Example:

Gas water heater
Vent-free heater +
Total =

51,200 Btu/Hr (maximum the space can support)

79,000 Btu/Hr (actual amount of Btu/Hr used)

40,000
39,000
79,000

Btu/Hr
Btu/Hr
Btu/Hr

WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space
or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of
the methods described in the

104307

National Fuel Gas Code, ANSI Z223.1, 1992, Section 5.3

5

or applicable local codes.

Continued

CGD3924PR, CGB3924PR and CGB3930PR

UNVENTED PROPANE/LP GAS LOG HEATER

AIR FOR
COMBUSTION AND
VENTILATION

Continued

VENTILATION AIR

Ventilation Air From Inside
Building

This fresh air would come from an adjoining
unconfined space. When ventilating to an
adjoining unconfined space, you must pro­vide two permanent openings: one within
12" of the ceiling and one within 12" of the
floor on the wall connecting the two spaces
(see options 1 and 2, Figure 2). You can also
remove door into adjoining room (see op­tion 3, Figure 2). Follow the National Fuel

Gas Code NFPA 54/ANSI Z223.1, Section

5.3, Air for Combustion and Ventilation for

required size of ventilation grills or ducts.

WARNING: Rework work­sheet, adding the space of the
adjoining unconfined space. The
combined spaces must have
enough fresh air to supply all
appliances in both spaces.

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation
grills or ducts. You must provide two per­manent openings: one within 12" of the
ceiling and one within 12" of the floor.
Connect these items directly to the outdoors
or spaces open to the outdoors. These spaces
include attics and crawl spaces.

IMPORTANT:

inlet or outlet air into attic if attic has a
thermostat-controlled power vent. Heated air
entering the attic will activate the power vent.

Do not provide openings for

Ventilation

Grills

Into Adjoining

Room,

Option 1

Figure 2 - Ventilation Air from Inside Building

Or

Remove
Door into
Adjoining

Room,
Option

3

12"

Outlet
Air

Ventilation Grills

Into Adjoining Room,

Ventilated
Attic

Outlet
Air

Inlet
Air

Inlet Air

Figure 3 - Ventilation Air from Outdoors

12"

Option 2

To Attic

To

Crawl

Space

Ventilated

Crawl Space

6

104307

OWNER’S MANUAL

INSTALLATION

NOTICE: This heater is intended
for use as supplemental heat. Use
this heater along with your pri­mary heating system. Do not in­stall this heater as your primary
heat source. If you have a central
heating system, you may run
system’s circulating blower while
using heater. This will help circu­late the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.

NOTICE: A qualified service per­son must install heater. Follow
all local codes.

NOTICE: State or local codes may
only allow operation of this appli­ance in a vented configuration.
Check your state or local codes.

WARNING: Make sure the re­mote selector switch is in the
OFF position before installing
heater.

WARNING: Never install the

heater

• in a bedroom or bathroom

• in a recreational vehicle

• where curtains, furniture,
clothing, or other flammable
objects are less than 36 inches
from the front, top, or sides of
the heater

• in high traffic areas

• in windy or drafty areas

CAUTION: This heater creates
warm air currents. These currents
move heat to wall surfaces next to
heater. Installing heater next to
vinyl or cloth wall coverings or
operating heater where impurities
(such as tobacco smoke, aromatic
candles, cleaning fluids, oil or
kerosene lamps, etc.) in the air
exist, may discolor walls.

IMPORTANT:

ture to the air. Although this is beneficial,
installing heater in rooms without enough
ventilation air may cause mildew to form
from too much moisture. See Air for Com-
bustion and Ventilation, pages 4 through 6.

Vent-free heaters add mois-

LOG SIZING REQUIREMENTS

Minimum Firebox Size

Rear

Width

Log Front At 14"

Size Height Depth Width Depth

24" 17" 14" 28" 21"
30" 17" 14" 34" 24"

Carefully follow the instructions below. This
will ensure safe installation into a masonry
fireplace or factory-built U.L. 127 listed
vent-free firebox.

Minimum Wall and Ceiling
Clearances (see Figure 4)

A. Clearances from the side of the fire-

place opening to any combustible wall
should not be less than 16 inches.

B. Clearances from the top of the fireplace

opening to the ceiling should not be less
than 42 inches.

42"

WARNING: Before installing
in a solid fuel burning fireplace,
the chimney flue and firebox must
be cleaned of soot, creosote,
ashes and loose paint by a quali­fied chimney cleaner. Creosote
will ignite if highly heated. A dirty
chimney flue may create and dis­tribute soot within the house. In­spect chimney flue for damage. If
damaged, operate heater with flue
damper closed.

WARNING: Seal any fresh air
vents or ash clean-out doors lo­cated on floor or wall of fireplace.
If not, drafting may cause pilot
outage or sooting. Use a heat­resistant sealant. Do not seal
chimney flue damper.

104307

CHECK GAS TYPE

Use only propane/LP gas. If your gas supply
is not propane/LP gas, do not install heater.
Call dealer where you bought heater for
proper type heater.

INSTALLATION AND
CLEARANCES (Vent-Free
Operation Only)

WARNING: Maintain the mini­mum clearances. If you can, pro­vide greater clearances from
floor, ceiling, and adjoining wall.

MINIMUM FIREPLACE

CLEARANCE TO

COMBUSTIBLE MATERIALS

Log Size Side Wall Ceiling

24" 16" 42"

7

16"

Left and

Right Sides

Figure 4 - Minimum Clearance to Wall and
Ceiling

Continued

CGD3924PR, CGB3924PR and CGB3930PR

UNVENTED PROPANE/LP GAS LOG HEATER

INSTALLATION

Continued

Minimum Non-Combustible
Material Clearances

If Not Using Mantel

Note:

If using a mantel, proceed to If Using

Mantel. If not using a mantel, follow the

information below.
You must have non-combustible material(s)

above the fireplace opening. Non-combus­tible materials (such as slate, marble, tile,
etc.) must be at least 1/2 inch thick. With
sheet metal, you must have non-combus­tible material behind it. Non-combustible
material must extend at least 8" up (for all
models). If non-combustible material is less
than 12", you must install the fireplace hood
accessory (24" and 30" models only). See
Figure 5 for minimum clearances.

IMPORTANT:

minimum clearances, you must operate
heater with chimney flue damper open.

If Using Mantel

You must have non-combustible material(s)
above the fireplace opening. Non-combus­tible materials (such as slate, marble, tile,
etc.) must be at least 1/2 inch thick. With
sheet metal, you must have non-combus­tible material behind it. Non-combustible
material must extend at least 8 inches up (for
all models). If non-combustible material is
less than 12", you must install the fireplace
hood accessory (24" and 30" models only).
Even if non-combustible material is more
than 12", you may need the hood accessory
to deflect heat away from your mantel shelf.
See Figure 5 and Figures 6 and 7on page 9
for minimum clearances.

IMPORTANT:

minimum clearances, you must operate
heater with chimney flue damper open.

If you cannot meet these

If you cannot meet these

Non-Combustible Requirements for
Material Distance (A) Safe Installation

12" or more Non-combustible material okay.
Between 8" and 12" Install fireplace hood accessory (GA6050, GA6052,

or GA6053, see

Less than 8" Non-combustible material must be extended to at

least 8". See
cannot extend material, you must operate heater
with flue damper open.

Accessories,

Between 8" and 12",

page 21).

above. If you

Heat Resistant
Material

(A)

Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace

8

104307

OWNER’S MANUAL

Hearth

5"
Min.

Combustible
Material

INSTALLATION

Continued

MANTEL CLEARANCES

If you meet minimum clearance between
mantel shelf and top of fireplace opening, a
hood is not required (see Figure 6).

If minimum clearances in Figure 6 are not
met, you must have a hood. When using a
hood there are still certain minimum mantel
clearances required. Follow minimum clear­ances shown in Figure 7 when using hood.

NOTICE: If your installation does
not meet the minimum clearances
shown, you must do one of the
following:

• operate the logs only with the
flue damper open

• raise the mantel to an accept­able height

• remove the mantel.

Floor Clearances

A. If installing appliance on the floor level,

you must maintain the minimum dis­tance of 14" to combustibles (see Fig­ure 8).

B. If combustible materials are less than

14" to the fireplace, you must install
appliance at least 5" above the combus­tible flooring (see Figure 9).

Mantel Shelf

18" 20" 22" 24"

Distances to
Underside of
Mantel

Underside of
Mantel Shelf

All minimum
distances are
in inches

Log Set

24"/30" Models

Top of Fireplace
Opening

Minimum Non­Combustible
Material

10"
8"
6"

1

2

"

/2

(A)

12"

Minimum Non­Combustible
Material Height

Figure 6 - Minimum Mantel Clearances Without Using Hood

8"
Min.

Mantel Shelf

12" 15" 18"

Distances to
Underside of
Mantel

Underside of
Mantel Shelf

All minimum
distances are
in inches

Log Set

18", 24", 30"

20"

All Models

Models

Top of Fireplace
Opening

Minimum Non­Combustible
Material

12"
10"
8"
6"

1

"

/2

2

Hood
(GA6050, GA6052)

104307

Figure 7 - Minimum Mantel Clearances When Using Hood

Combustible

Combustible

Material

14"

14"
Min.

Min.

Non-Combustible Material

Non-Combustible

Material

Material

Figure 9 - Minimum Fireplace Clearances

Figure 8 - Minimum Fireplace Clearances

Above Combustible Flooring

If Installed at Floor Level

9

Hearth

Combustible
Material

5"
Min.

Continued