Comfort Glow CGFB32CA Circulating Louvered Original instructions

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UNVENTED (VENT-FREE)
UNIVERSAL FIREBOX
SAFETY INFORMATION AND
INSTALLATION MANUAL
This appliance may be installed in an aftermarket*, permanently located, manufactured
(mobile) home, where not prohibited by local codes.
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.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Shown with optional cabinet
mantel, hearth base.
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result caus-
ing 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 assis-
tanceoradditionalinformationcon-
sult a qualified installer, service
agency, or the gas supplier.
WARNING:Foruseonlywithalisted
gas-firedunventeddecorativeroom
heater. Not to exceed 40,000 Btu/H.
Do not build a wood fire.
This firebox has been tested and approved by CSA
under ANSI Z21.91 for use with any ANSI Z21.11.2
approved gas logs.
CGFB32CA
Circulating
Louvered
Model
Carefully review the instructions supplied with the
decorative type unvented room heater for the mini-
mum fireplace size requirement.
Do not install an appliance in this firebox unless this
firebox meets the minimum dimensions required for
the installation.

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TABLE OF CONTENTS
SAFETY INFORMATION
SAFETY INFORMATION
IMPORTANT: Read this owner’s manual carefully and
completely before trying to assemble, operate, or
service this firebox. Improper use of this firebox can
cause serious injury or death from burns, fire, explo-
sion,electricalshock,orcarbonmonoxidepoisoning.
WARNINGS
WARNING: Any change to this firebox or its
controls can be dangerous.
1. This firebox shall not be installed in a bedroom or bathroom.
2. Never install the firebox
•in a recreational vehicle
•where curtains, furniture, clothing, or other flammable ob-
jects are less than 42 inches from the front, top, or sides of
the firebox
•in high traffic areas
•in windy or drafty areas
3. Do not use this firebox as a wood-burning fireplace. Use only
decorative unvented room heaters (log sets).
4. Do not add extra logs or ornaments such as pine cones, vermicu-
lite, or rock wool. Using these added items can cause sooting.
5. Vent-free gas log heaters installed in these fireboxes require
fresh air ventilation to run properly. See Air for Combustion
and Ventilation, pages 4 through 6.
6. Do not run firebox
•where flammable liquids or vapors are used or stored
•under dusty conditions
7. Do not use this firebox to cook food or burn paper or other objects.
8. Turn firebox off and let cool before servicing. Only a qualified
service person should service and repair firebox.
WARNING:Donotallowfanstoblowdirectlyintothe
firebox.Avoidanydraftsthatalterburnerflamepatterns.
Ceiling fans can create drafts that alter burner flame
patterns. Altered burner patterns can cause sooting.
WARNING:Donotuseablowerinsert,hood,heat
exchanger insert, or other accessory not approved
for use with this heater.
Due to high temperatures, the firebox should be
located out of traffic and away from furniture and
draperies.
Do not place clothing or other flammable material on
or near firebox. Never place any objects on the fire-
box or logs.
You must operate this fireplace with the provided
fireplace screen (closed), hood, and brick liner in
place. Make sure these parts are in place before
running firebox.
Firebox front and screen become very hot when
running firebox. Keep children and adults away from
hot surfaces to avoid burns or clothing ignition.
Firebox will remain hot for a time after shutdown.
Allow surfaces to cool before touching.
Carefully supervise young children when they are in
the room with firebox.
Keep the firebox area clear and free from combus-
tiblematerials,gasoline,andotherflammablevapors
and liquids.
TABLE OF CONTENTS
SAFETY INFORMATION ............................................................ 2
LOCAL CODES........................................................................... 3
UNPACKING ............................................................................... 3
PRODUCT SPECIFICATIONS.................................................... 3
PRODUCT FEATURES .............................................................. 4
LOCATING FIREBOX ................................................................. 4
AIR FOR COMBUSTION AND VENTILATION ........................... 4
INSTALLATION ........................................................................... 6
TECHNICAL SERVICE ..............................................................11
REPLACEMENT PARTS ...........................................................11
ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 12
ACCESSORIES ........................................................................ 14
OWNER’S REGISTRATION FORM.......................................... 15
PARTS CENTRALS .................................................................. 17
WARRANTY INFORMATION....................................... Back Page

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3
SAFETY INFORMATION
LOCAL CODES
UNPACKING
PRODUCT IDENTIFICATION
LOCAL CODES
Installand usefireplace with care. Follow alllocal codes.In the absence
oflocalcodes,usethelatesteditionofTheNationalFuelGasCodeANSI
Z223.1/NFPA54*.Fireboxmustbeelectricallygroundedinaccordance
with the National Electrical Code, ANSI/NFPA70 (latest edition).
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
PRODUCT SPECIFICATIONS
9. Operating vent-free log sets in a firebox above elevations of
4,500 feet could cause pilot outage.
10. Do not use the firebox if it has been under water due to the
shock hazard that could result with the blower accessary (if
installed) in place.
11. Provide adequate clearances around air openings.
SAFETY INFORMATION
Continued
UNPACKING
1. With utility knife, cut the carton all the way around above the
staples on the bottom tray. Lift the carton off the firebox. Re-
move packing.
2. Check carton contents for the following:
•Screen assembly
•Screen support rod
•Hardware and parts bag containing the following:
- Owner’s Operation and Installation Manual
- 2 - Black #10 x 3/8" Phillips screws
3. If any items are missing, inform dealer where you bought the
firebox.
4. Check all itemsfor anyshipping damage. Ifdamaged, promptly
inform dealer where you bought firebox.
35 1/16"
31 3/4"
1 1/4"
16 1/4"
2 3/4"
3 7/8"
6 3/4"
2 3/4"
6 3/8"
19 3/8"
1 1/4"
Built-in
Nailing
Flanges
Figure 1 - Firebox Front View
12 1/2"
9 3/4"
4 5/8"
2 1/2"
6"
32 3/16"
33 11/16"
2 1/4"
Electrical Access Hole Electrical
Access Hole Gas Line Access
Figure 2 - Firebox Side View
22 1/2"
16 11/16"
13
1
/ 4 "*14
1
/ 4 "*
31 5/8"
34 3/8"
35 5/8"
19 1/4"
Figure 3 - Firebox Top View
* Note: 14 1/4" is total firebox
cavity depth including brick
liner. 13 1/4" is depth of flat
floor including brick liner.

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PRODUCT FEATURES
Operation
Blower Accessory
LOCATING FIREBOX
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation
LOCATING FIREBOX
Plan where you will install the firebox. This will save time and
money later when you install the firebox. Before installation,
consider the following:
1. Where the firebox will be located. Allow for wall and ceiling
clearances (see Installation Clearances, page 6).
2. Everything needed to complete installation.
3. Thesemodels CANNOT beinstalled in abedroomor bathroom.
4. Proper air for combustion and ventilation (see below).
Today’s homes are built more energy efficient than ever. New materi-
als, increased insulation, and new construction methods help reduce
heat loss in homes. Home owners weather strip and caulk around
windowsanddoorstokeepthecoldairoutandthe warm air in. During
heatingmonths,home owners wanttheirhomesas airtight aspossible.
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.
Exhaustfans,fireboxes,clothesdryers,andfuelburningappliances
drawairfromthehousetooperate.Youmustprovideadequatefresh
air for these appliances. This will insure proper venting of vented
fuel-burning appliances.
AIR FOR COMBUSTION AND
VENTILATION
WARNING: This firebox shall not be installed in a
confined space or unusually tight construction un-
less provisions are provided for adequate combus-
tion and ventilation air. Read the following instruc-
tionstoinsureproperfreshairforthisandotherfuel-
burning appliances in your home.
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas Code ANSI
Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.
All spaces in homes fall into one of the three following ventilation
classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 4 through 6 will help you classify your
space and provide adequate ventilation.
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 exposedto the outside atmosphere
have a continuous water vapor retarder with a rating
of one perm (6x10-11 kg per pa-sec-m2) or less with
openings gasketed or sealed and
b. weather stripping has been added on openable win-
dows and doors and
c. caulking or sealants are applied to areas such as
joints around window and door frames, between sole
platesandfloors,betweenwall-ceilingjoints,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 Ventilation Air
From Outdoors, page 6.
If your home does not meet all of the three criteria above,
proceed to Determining Fresh-Air Flow For Firebox Loca-
tion , page 5.
Confined Space and Unconfined Space
The National Fuel Gas Code ANSI Z223.1/NFPA 54 defines a
confined space as a space whose volume is less than 50 cubic feet
per 1,000 Btu per hour (4.8 m3per kw) of the aggregate input rating
of all appliances installed in that space and an unconfined space as
aspacewhosevolumeisnotlessthan50cubicfeetper1,000Btuper
hour (4.8 m3per 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
furnishedwithdoors,areconsideredapartof the unconfined space.
* Adjoining rooms are communicating only if there are doorless
passageways or ventilation grills between them.
PRODUCT FEATURES
OPERATION
This firebox is designed to accept unvented decorative gas logs. It
requiresnooutsideventingorchimneymakinginstallationeasyand
inexpensive. When used without the blower the firebox requires no
electricity making it ideal for emergency backup heat.
BLOWER ACCESSORY
The CGFB32CA firebox will accept the GA3750 accessory. The
variable blower allows you to select the fan speed you desire. The
blower circulates heated air from the firebox into the room. Use of
blower is optional.

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AIR FOR COMBUSTION AND VENTILATION
Determining Fresh-Air Flow For Heater Location
Ventilation Air
AIR FOR COMBUSTION
AND VENTILATION
Continued
WARNING:Iftheareainwhichthefireboxandgas
log heater may be operated is smaller than that
definedasanunconfinedspaceorifthebuildingisof
unusuallytight construction,provideadequate com-
bustion and ventilation air by one of the methods
describedinthe NationalFuelGasCode,ANSIZ223.1/
NFPA 54 Section 5.3 or applicable local codes.
DETERMINING FRESH-AIR FLOW FOR
HEATER LOCATION
Determining if You Have a Confined or
Unconfined Space
Usethis worksheetto determineif youhavea confinedor unconfinedspace.
Space:Includestheroominwhichyouwillinstallheaterplusanyadjoining
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: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling
height) = 2560 cu. ft. (volume of space)
Ifadditional ventilationtoadjoiningroomis suppliedwith grillsoropen-
ings, add the volume of these rooms to the total volume of the space.
2. Multiply the space volume by 20 to determine the maximum Btu/Hr
the space can support.
__________ (volume of space) x 20 = (Maximum Btu/Hr the space
can support)
Example: 2560 cu. ft. (volume of space) x 20 = 51,200 (maximum
Btu/Hr the space can support)
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 com-
bustion air from the outdoors and vents to the outdoors.
Example:
Gas water heater _____________ Btu/Hr
Vent-free heater + _____________ Btu/Hr
Total = _____________ Btu/Hr
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: 51,200 Btu/Hr (maximum the space can support)
79,000 Btu/Hr (actual amount of Btu/Hr used)
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 adjoining
roomor addventilation grillsbetweenrooms. SeeVentila tion AirF rom
InsideBuilding below.
B. Vent room directly to the outdoors. See Ventila tion Air F rom Out-
doors, page 6.
C. InstallalowerBtu/Hrheater,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.
40,000
39,000
79,000
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 4). You can also remove door into
adjoining room (see option 3, Figure 4). Follow the National Fuel
Gas Code ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion
and Ventilation for required size of ventilation grills or ducts.
Figure 4 - Ventilation Air from Inside Building
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"