Desa CDCFNRA Quick start guide

UNVENTED (VENT-FREE) GAS COMPACT CLASSIC HEARTH®
DUAL BURNER FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
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REMOTE-READY MODELS
CDCFNRA AND CDCFPRA
Shown with Optional Cabinet Mantel/Hearth Base Accessory
WARNING: If the information in this manual is not fol-
lowed exactly, a fire or explosion may result causing
property damage, personal injury, or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
— 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 performed by a quali-
fied installer, service agency, or the gas supplier.

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WARNING: Improper installation, adjustment, altera-
tion, service, or maintenance can cause injury or prop-
erty damage. Refer to this manual for correct installation
and operational procedures. For assistance or addi-
tional information consult a qualified installer, service
agency, or the gas supplier.
WARNING: This is an unvented gas-fired heater. It uses
air (oxygen) from the room in which it is installed. Provi-
sions for adequate combustion and ventilation air must
be provided. Refer to Air for Combustion and Ventilation
section on page 6 of this manual.
This appliance may be installed in an aftermarket,* per-
manently located, manufactured (mobile) home, where
not prohibited by local codes.
This appliance is only for use with the type of gas indi-
cated on the rating plate. This appliance is not convert-
ible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
TABLE OF CONTENTS
Safety Information ............................................... 3
Product Identification ........................................... 4
Optional Remote Control Accessories ................. 4
Local Codes ........................................................ 5
Product Features ................................................. 5
Unpacking ........................................................... 5
Hood Assembly ................................................... 5
Air for Combustion and Ventilation ...................... 6
Installation ........................................................... 8
operating Fireplace ............................................ 22
Inspecting Burners ............................................ 25
Cleaning and Maintenance ................................ 26
Wiring Diagram .................................................. 27
Troubleshooting ................................................. 28
Specifications .................................................... 32
Replacement Parts ............................................ 33
Service Hints ..................................................... 33
Technical Service .............................................. 33
Illustrated Parts Breakdown and Parts List ....... 34
Accessories ....................................................... 38
State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the
Commonwealth of Massachusetts.
Sellers of unvented propane or natural gas-fired supplemental room heaters shall provide to each
purchaser a copy of 527 CMR 30 upon sale of the unit.
Vent-free gas products are prohibited for bedroom and bathroom installation in the Common-
wealth of Massachusetts.

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116658-01A 3
WARNING: Do not allow fans
to blow directly into the fireplace.
Avoid any drafts that alter burner
flame patterns. Ceiling fans can
create drafts that alter burner
flame patterns. Altered burner
patterns can cause sooting.
Due to high temperatures, the
appliance should be located out
of traffic and away from furniture
and draperies.
Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects on the heater.
Fireplace front and screen be-
come very hot when running
heater. Keep children and adults
away from hot surfaces to avoid
burns or clothing ignition. Fire-
place will remain hot for a time
after shutdown. Allow surfaces
to cool before touching.
Carefully supervise young chil-
dren when they are in the room
with fireplace. When using the
hand-held remote accessory,
keep selector switch in the OFF
position to prevent children from
turning on burners with remote.
You must operate this fireplace
with the fireplace screen in place.
Make sure fireplace screen is
closed before running fireplace.
Keep the appliance area clear
and free from combustible ma-
terials, gasoline, and other flam-
mable vapors and liquids.
SAFETY INFORMATION
WARNING: This product con-
tains and/or generates chemicals
known to the State of California
to cause cancer or birth defects,
or other reproductive harm.
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, op-
erate, or service this fireplace.
Improper use of this fireplace
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 head-
aches, dizziness, or nausea. If you have these signs,
the fireplace may not be working properly. Get
fresh air at once! Have fireplace 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.
Natural and Propane/LP Gas: Natural and pro-
pane/LP gases are 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 fireplace.
WARNING: Any change to
this fireplace or its controls can
be dangerous.
WARNING: Do not use a blow-
er insert, heat exchanger insert,
or other accessory not approved
for use with this fireplace.

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PRODUCT
IDENTIFICATION
Figure 1 - Vent-Free Compact Dual Flame
Fireplace
O
F
F
P
I
L
O
T
O
N
H
I
L
O
Hood
Fireplace
Cabinet
Logs
Ignitor
Button
Remote
Control
(Optional) Control
Knob
OPTIONAL REMOTE
CONTROL ACCESSORIES
There are four optional remote controls that
can be purchased separately for Remote-Ready
Models only:
• wall switch •
hand-held ON/OFF remote
• wall thermostat
• hand-held thermostat remote
See Accessories, page 38.
SAFETY INFORMATION
Continued
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/LP supply tank(s) in-
side any structure. Locate propane/LP 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
neighborʼs phone. Follow the gas supplierʼs
instructions
• if you cannot reach your gas supplier, call
the fire department
4. This fireplace shall not be installed in a bed-
room or bathroom.
5. Do not use this fireplace as a wood-burning
fireplace. Use only the logs provided with
the fireplace.
6. Do not add extra logs or ornaments such as
pine cones, vermiculite, or rock wool. Using
these added items can cause sooting. Do not
add lava rock around base. Rock and debris
could fall into the control area of fireplace.
7. This fireplace is designed to be smokeless. If
logs ever appear to smoke, turn off fireplace
and call a qualified service person. Note:
During initial operation, slight smoking could
occur due to log curing and fireplace burning
manufacturing residues.
8. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 26.
9. Before using furniture polish, wax, carpet
cleaner, or similar products, turn fireplace off.
If heated, the vapors from these products may
create a white powder residue within burner
box or on adjacent walls or furniture.
10. This fireplace needs fresh air ventilation to run
properly. This fireplace has an Oxygen Deple-
tion Sensing (ODS) safety shutoff system. The
ODS shuts down the fireplace if not enough
fresh air is available. See Air for Combustion
and Ventilation, page 6. If fireplace keeps
shutting off, see Troubleshooting, page 28.
11. Do not run fireplace
• where flammable liquids or vapors are used
or stored.
• under dusty conditions.
12. Do not use this fireplace to cook food or burn
paper or other objects.
13. Never place any objects in the fireplace or on
logs.
14. Do not use fireplace if any part has been under
water. Immediately call a qualified service
technician to inspect the room fireplace and to
replace any part of the control system and any
gas control which has been under water.
15. Turn off and unplug fireplace and let cool
before servicing. Only a qualified service
person should service and repair fireplace.
16. Operating fireplace above elevations of 4,500
feet could cause pilot outage.
17. Do not operate fireplace if log is broken. Do
not operate fireplace if log is chipped (dime-
sized or larger).
18.
To prevent performance problems, do not use pro-
pane/LP fuel tank of less than 100 lbs. capacity.
19. Provide adequate clearances around air
openings.

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116658-01A 5
REMOVING CERAMIC BRICK
LINERS
1. Remove screws from top louver and carefully
remove louver (see Figure 2).
2. Remove ceramic brick liners with protective
packaging. The brick liners will be installed
later.
3. Remove yellow sticker from top of firebox.
4. Replace top louver using screws removed in
step 1.
Figure 2 - Removing Brick Liners
Top Louver
Screws
Wrapped
Brick Liners
LOCAL CODES
Install and use fireplace with care. Follow all local
codes. In the absence of local codes, use the lat-
est edition of The National Fuel Gas Code ANSI
Z223.1/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
PRODUCT FEATURES
SAFETY PILOT
This fireplace has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shutoff system. The
ODS/pilot is a required feature for vent-free room
fireplaces. The ODS/pilot shuts off the fireplace if
there is not enough fresh air.
PIEZO IGNITION SYSTEM
This fireplace has a piezo ignitor. This system
requires no matches, batteries, or other sources
to light fireplace.
UNPACKING
WARNING: Ceramic brick
liners are located behind upper
louver and must be removed
before lighting fireplace.
1. Remove fireplace and hood from carton.
Log is wrapped and inside fireplace. Do not
remove at this time.
2. Remove all protective packaging applied to
fireplace for shipment.
3. Make sure your fireplace includes one hard-
ware packet.
4. Check fireplace for any shipping damage. If
fireplace is damaged, promptly inform dealer
where you bought fireplace.
HOOD ASSEMBLY
WARNING: Always have
screen in place before operating
fireplace. This prevents exces-
sive temperatures on fireplace
surfaces.
WARNING: Failure to position
the parts in accordance with these
diagrams or failure to use only
parts specifically approved with
this fireplace may result in prop-
erty damage or personal injury.
Tools Required:
• Phillips screwdriver • slotted screwdriver
• 5/16" hex wrench • scissors
1. Cut two plastic straps to remove the log from
the firebox cavity. Set log aside.
2. An optional blower is available. See Acces-
sories, page 38. Install optional blower now.
Follow installation instructions provided with
blower and see page 14 or 15, depending on
your installation.

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Figure 3 - Assembling Hood
Hood
Sheet Metal
Screws Firebox
Top
Louver
AIR FOR COMBUSTION
AND VENTILATION
WARNING: This fireplace
shall not be installed in a con-
fined space or unusually tight
construction unless provisions
are provided for adequate com-
bustion and ventilation air. Read
the following instructions to in-
sure proper fresh air for this and
other fuel-burning appliances in
your home.
Todayʼs 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 effi-
cient, 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 fuel-burning appliances.
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 fol-
lowing ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 6 through 8 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 exposed to the out-
side atmosphere have a continuous
water vapor retarder with a rating of
one perm (6 x 10-11 kg per pa-sec-m2) or
less with openings gasketed or sealed
and
b. weather stripping has been added on
openable windows and doors and
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 these three
criteria, you must provide additional
fresh air. See Ventilation Air From
Outdoors, page 8.
If your home does not meet all of the three
criteria above, proceed to Determining
Fresh-Air Flow For Fireplace Location.
3. Locate four black phillips sheet metal screws
in hardware packet.
4. Slide hood between louver and firebox top and
align screw holes.
5. Insert screws as shown in Figure 3. Tighten
screws firmly.
HOOD ASSEMBLY
Continued

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116658-01A 7
AIR FOR COMBUSTION
AND VENTILATION
Continued
Confined 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 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 com-
municating directly with the space in which the
appliances are installed*, through openings not
furnished with doors, are considered a part of the
unconfined space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation grills
between them.
DETERMINING FRESH-AIR FLOW
FOR FIREPLACE 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
fireplace plus any adjoining rooms with doorless pas-
sageways 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 16 ft. (length) x 14 ft.
(width) x 8 ft. (ceiling height) = 1792 cu. ft.
(volume of space)
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. 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: 1792 cu. ft. (volume of space) x 20 =
35,840 (maximum Btu/Hr the space can support)
30,000
+ 10,000
= 40,000
3. Add the Btu/Hr of all fuel burning appliances in
the space.
Vent-free fireplace ___________ 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. Di-
rect-vent draws combustion air from the outdoors
and vents to the outdoors.
Example:
Gas water heater ___________ Btu/Hr
Vent-free fireplace ___________ 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: 35,840 Btu/Hr (maximum the space
can support)
40,000 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 maxi-
mum 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 adjoin-
ing room. If the extra space provides an unconfined
space, remove door to adjoining room or add
ventilation grills between rooms. See Ventilation
Air From Inside Building, page 8.
B. Vent room directly to the outdoors. See Ventila-
tion Air From Outdoors, page 8.
C. Install a lower Btu/Hr fireplace, 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.
WARNING: If the area in
which the fireplace may be oper-
ated 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 National Fuel Gas Code,
ANSI Z223.1/NFPA 54 Section 5.3
or applicable local codes.

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8
AIR FOR COMBUSTION
AND VENTILATION
Continued
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining un-
confined 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 5). Fol-
low 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.
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. 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.
IMPORTANT: Do not provide openings for inlet
or outlet air into attic if attic has a thermostat-
controlled power vent. Heated air entering the attic
will activate the power vent.
Outlet
Air
Ventilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
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"
Figure 5 - Ventilation Air from Outdoors
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 pri-
mary 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.
WARNING: A qualified ser-
vice person must install fire-
place. Follow all local codes.
WARNING: Never install the
fireplace
• 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 fireplace
• as a fireplace insert
• in high traffic areas
• in windy or drafty areas

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116658-01A 9
WARNING: Never install in a
bedroom or bathroom. Any heat-
ing product with a Btu/Hr rating
over 10,000 cannot be used in a
bedroom.
CAUTION: This fireplace cre-
ates warm air currents. These
currents move heat to wall sur-
faces next to fireplace. Installing
fireplace next to vinyl or cloth
wall coverings or operating
fireplace where impurities (such
as, but not limited to, tobacco
smoke, aromatic candles, clean-
ing fluids, oil or kerosene lamps,
etc.) in the air exist, may discolor
walls or cause odors.
IMPORTANT: Vent-free fireplaces add moisture to
the air. Although this is beneficial, installing fireplace
in rooms without enough ventilation air may cause
mildew to form from too much moisture. See Air for
Combustion and Ventilation, page 6.
Note: Your fireplace is designed to be used in zero
clearance installations. Wall or framing material can be
placed directly against any exterior surface on the rear,
sides, or top of your fireplace, except where standoff
spacers are integrally attached. If standoff spacers are
attached to your fireplace, these spacers can be placed
directly against wall or framing materials.
Note: When installing fireplace directly on carpet-
ing, tile or other combustible material, other than
wood flooring, the fireplace shall be installed on a
metal or wood panel extending the full width and
depth of the fireplace.
Use the dimensions shown for rough openings to
create the easiest installation (see Built-In Fire-
place Installation, page 10).
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP)
for your unit. If your gas supply is not correct, do
not install fireplace. Call dealer where you bought
fireplace for proper type fireplace.
INSTALLATION
Continued WARNING: This appliance
is equipped for (natural or pro-
pane/LP) gas. Field conversion
is not permitted.
INSTALLATION ITEMS
Before installing fireplace, make sure you have
the items listed below.
• external regulator (supplied by installer, for
propane/LP units only)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection*
• ground joint union
• sediment trap
• tee joint
• pipe wrench
* A CSA design-certified equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional CSA
design-certified equipment shutoff valve from
your dealer. See Accessories, page 38.
Note: If desired, purchase a four-sided brass trim
kit for built-in installations. See Accessories,
page 38.
FIREPLACE CLEARANCES
WARNING: Maintain the
minimum clearances shown in
Figure 6, page 10. If you can,
provide greater clearances from
floor, ceiling, and joining wall.
If your fireplace is to be used with an optional
mantel, the installation instructions included with
your mantel shows an CSA approved method of
attaching the fireplace/mantel system to a wall.
IMPORTANT: Only use optional cabinet or
corner mantels specified in this manual. Purchase
the optional mantel from your dealer (see Acces-
sories, page 38).
If your fireplace is to be recessed into the wall, see
Built-In Fireplace Installation, page 10, to secure
your fireplace into the wall.

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10
CAUTION: If you install the
fireplace in a home garage
• fireplace pilot and burner must
be at least 18 inches above
floor.
• locate fireplace where moving
vehicle will not hit it.
For convenience and efficiency, install fireplace
• where there is easy access for operation, inspec-
tion, and service
• in coldest part of room
An optional blower kit is available from your
dealer. See Accessories, page 38. If planning to use
blower, follow instructions provided with blower
for power source.
Minimum Clearances For Side
Combustible Material, Side Wall, and
Ceiling
A. Clearances from the side of the fireplace
cabinet to any combustible material and wall
should follow diagram in Figure 6.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3 1/2" from the wall. This combus-
tible material must be 4" from the side of the
fireplace opening (see Figure 6).
B. Clearances from the top of the fireplace opening
to the ceiling should not be less than 36 inches.
C. For mantel clearances, see Figure 10, page 12.
MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS
Top Left and Bottom
Right Sides and Rear
36" 6" 0"
Figure 6 - Minimum Clearance for
Combustible to Wall
*Minimum 16 inches from Side Wall
*
Example
INSTALLATION
Continued BUILT-IN FIREPLACE
INSTALLATION
Built-in installation of this fireplace involves
installing fireplace into a framed-in enclosure.
This makes the front of fireplace flush with wall.
An optional brass trim kit accessory is available
(see Accessories, page 38). Brass trim will extend
past sides of fireplace approximately 1/2 inch. This
will cover the rough edges of the wall opening. If
installing a built-in mantel above the fireplace, you
must follow the clearances shown in Figure 11,
page 12. Follow the instructions below to install
the fireplace in this manner.
Actual Framing
Height 26" 26 7/8"
Front Width 26 3/4" 26 7/8"
Depth 14 1/4" 15 1/4"
1. Frame in rough opening. Use dimensions shown
in Figure 7 for the rough opening. If installing in
a corner, use dimensions shown in Figure 8 for
the rough opening. The height is 26 7/8" which
is the same as the wall opening above.
2. If installing GA3450TA blower accessory, do
so at this time. Follow instructions included
with blower accessory.
Note: If not installing blower accessory, you
may wish to run electrical wiring to your
fireplace for future blower installation (see
Accessories, page 38). Use only approved
three-wire electrical wiring.
Figure 8 - Rough Opening for Installing
in Corner
Figure 7 - Rough Opening for Installing
in Wall
435/16"
305/8"
611/4"
267/8"
26
7
/ 8 "
26
7
/ 8 "
3/4" Off
The Floo
r
Minimum
15
1
/ 4 "

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116658-01A 11
INSTALLATION
Continued
WARNING: If pre-wiring, do
not connect wiring to any electri-
cal source at this time.
Install fireplace electrical outlet
and connect wiring to outlet
before connecting to electrical
source. The fireplace electri-
cal outlet is included with the
GA3450TA blower accessory.
Only use the fireplace electri-
cal outlet supplied with the
GA3450TA blower accessory.
Note: A qualified installer should make all electri-
cal connections.
3. Install gas piping to fireplace location. This
installation includes an approved flexible gas
line (if allowed by local codes) after the equip-
ment shutoff valve. The flexible gas line must
be the last item installed on the gas piping.
4. If you have not installed hood, follow instruc-
tions on page 6.
5. Carefully set fireplace in front of rough opening
with back of fireplace inside wall opening.
6. Attach flexible gas line to fireplace gas regula-
tor. See Connecting Equipment Shutoff Valve
to Heater Control, page 17.
7. Bend four nailing flanges on outer casing with
pliers (see Figure 9).
8. Attach fireplace to wall studs using nails or
wood screws through holes in nailing flange.
Figure 9 - Attaching Fireplace to Wall
Studs
Nailing
Flanges
Nails or
Wood
Screws
Wall Studs
9.
Check all gas connections for leaks. See Check-
ing Gas Connections, page 17.
10. If using optional brass trim kit, install the trim
after final finishing and/or painting of wall.
See instructions included with brass trim ac-
cessory for attaching brass trim.
IMPORTANT: When finishing your firebox,
combustible materials such as wall board, gypsum
board, sheet rock, drywall, plywood, etc. may be
butted up next to the sides and top edge of the fire-
box. Combustible materials should never overlap
the firebox front facing.
WARNING: Do not allow any
combustible materials to overlap
the firebox front facing.
IMPORTANT: Noncombustible materials such as
brick, tile, etc. may overlap the front facing, but
should never cover any necessary openings like
louvered slots.
WARNING: Do not allow
noncombustible materials to
cover any necessary openings
like louvered slots.
WARNING: Never modify or
cover the louvered slots on the
front of the firebox.
WARNING: Use only noncom-
bustible mortar or adhesives when
overlapping the front facing with
noncombustible facing material.

www.desatech.com 116658-01A
12
15"
18"
21"
23"
2
1
/2"
6"
8"
10"
Note:
A
ll vertical
measurements
are from top of
fireplace
opening to
bottom of
mantel shelf. All
measurements
are in inches.
INSTALLATION
Continued
Mantel Clearances for Built-In
Installation
If placing mantel above built-in fireplace, you must
meet minimum clearance between mantel shelf and
top of fireplace opening (see Figure 10).
NOTICE: Surface temperatures
of adjacent walls and mantels be-
come hot during operation. Walls
and mantels above the firebox
may become hot to the touch.
If installed properly, these tem-
peratures meet the requirement
of the national product standard.
Follow all minimum clearances
shown in this manual.
NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
of the following:
• raise the mantel to an accept-
able height
• remove the mantel
Figure 10 - Minimum Mantel Clearances
for Built-In Installation
Mantel Shelf
Side of Firebox
Figure 11 - Removing Top Louver and
Opening Bottom Louver
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Top
Louver
Bottom Louver
OPTIONAL MANTEL INSTALLATION
Note: Refer to instructions provided with the
mantel for assembly instructions. Refer to the
following instructions for system installation.
Refer to instructions on page 6 for hood assembly.
Blower accessory should be installed if it is being
used (see Installing Optional Blower Accessory
GA3450TA, page 13).
1. Unscrew four screws that attach top louver to
fireplace. Remove louver from fireplace and
set aside (see Figure 11).
2. Place base assembly next to wall at installation
location.
3.
Place fireplace on wood base (see Figure 12,
page 13).
4. Place mantel around fireplace on base (see
Figure 12, page 13).
5. Assemble perimeter trim kit. See Assembling
Perimeter Trim, page 13.
6. Firmly snap perimeter trim kit on shoulder
screws. Shoulder screws are located on fire-
place cabinet (see Figure 12, page 13).
7. Align perimeter trim kit for flush fit around
opening.
8. Center mantel left to right on base making sure
mantel is flush against wall.
9. Use two 3" wood screws provided and attach
base of fireplace to wooden mantel base (see
Figure 12, page 13).
10. Remove perimeter trim kit and mantel. Be
careful not to damage wall or mantel.
11. Cut an access hole in base to run flexible gas
line to fireplace (see Figure 12, page 13). Make
sure to locate access hole so mantel will cover
it when installed. Note: You can secure base
to floor using wood screws. Countersink screw
heads and putty over.

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116658-01A 13
INSTALLATION
Continued
12. Install gas line. See Connecting To Gas Sup-
ply, page 16.
13. Check for leaks. See Checking Gas Connec-
tions, page 17.
14. Place mantel around fireplace. Be careful not
to damage wall or mantel.
15. Place perimeter trim kit on the shoulder screws
located on the side and top of the fireplace.
Firmly snap trim over shoulder screws on
fireplace (see Figure 12).
16. Adjust assembly to remove any gaps. Attach
remaining two 3" wood screws from hardware
pack through openings inside of fireplace sides
into the mantel. The openings are located at top
behind the area for top louver (see Figure 12).
17. Reinstall top louver.
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Figure 12 - Attaching Brass Trim to
Fireplace
Assembled
Brass Trim
Hole for 3" Wood Screw
for Attaching Fireplace to
Wooden Base
Shoulder
Screws
Gas
Line
Access
Hole
Mantel
Base
Hole for
3" Wood
Screw for
Attaching
Fireplace
to Mantel
Shoulder
Screw
Assembling Perimeter Trim (Perimeter
trim shipped with mantel)
1. Remove packaging from three remaining
pieces of trim.
2. Locate two adjusting plates with set screws,
and two shims in the hardware packet.
3. Align shim under adjusting plate as shown in
Figure 13.
4.
Slide one end of adjusting plate/shim in slot on
mitered edge of top brass trim (see Figure 13).
5. Slide other end of adjusting plate/shim in slot
on mitered edge of side perimeter trim (see
Figure 13).
6. While firmly holding edges of perimeter trim
together, tighten both set screws on the adjust-
ing plate with slotted screwdriver.
7. Repeat steps 1 through 6 for other corner.
8. Set perimeter trim assembly aside for later
installation.
Figure 13 - Assembling Brass Trim
Side Brass
Trim
Top Brass
Trim
Mitered Edge
Shim
Set Screws
Adjusting
Plate
Slot
INSTALLING OPTIONAL BLOWER
ACCESSORY GA3450TA
Removing Upper Louver
To install the blower accessory, you must first
remove the upper louver.
1. Lift screen off fireplace and remove log set if
installed.
2. Remove 4 screws from upper louver (see
Figure 11, page 12). Save these screws.
3.
Pull upper louver straight out from the cabinet. Be
careful not to scratch the paint. Set louver aside.
4. Open lower louver door by swinging door
down (see Figure 11, page 12).

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14
INSTALLATION
Continued
Installing Blower Accessory
CAUTION: Label all wires
prior to disconnection when
servicing controls. Wiring errors
can cause improper and danger-
ous operation.
CAUTION: Verify proper op-
eration after servicing.
Note: If you are using a mantel with your fireplace,
use the following instructions. If your fireplace is
built-in, see For Built-In Installation, page 15.
1. Install snap bushings found in blower kit into
hole in left side of outer casing and into one of
the holes in rear of remote/blower bracket.
2. Make sure the wire harness is firmly connected to
the terminals on the blower bracket assembly.
3. Note the wire locations on back of AUTO/
OFF/ON switch. The terminals on back of
switch are numbered 1, 2, and 3. Carefully
remove red wire from terminal 3 and blue
wire from terminal 1. Black wire can remain
on middle terminal 2 (see Figure 14).
4. Carefully disconnect green and white wires at
their insulated connectors (see Figure 15).
3
2
1
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Figure 14 - Installing Blower Bracket
Assembly (Remote-Ready Unit Shown)
Wire
Harness
Blower
Bracket
Assembly
Screw
Wire
Harness
Switch
Wiring Routing
Hole in Baffle
Switch
Plate
Remote/
Blower
Bracket
Power
Cord
Lower Louver
Door
Blower
Mounting
Holes
Figure 16 - Installing Switch Plate to
Remote/Blower Bracket
Figure 15 - Wiring Diagram For Blower
Accessory Standard Installation
Red
Red
Fan Switch
(Auto/Off/On)
Blue
Blue
Thermostat
Switch
(N.O.)
Green
White
Green
White
On
110/115
V.A.C. Blower
Motor
Black
Off
1
2
3
Auto
Remote/
Blower
Bracket
Switch
Plate
Screw
5. In top of the fireplace cabinet, locate the four
mounting holes on the outer casing. Align
these four holes with those on the blower
bracket assembly. Attach blower bracket as-
sembly to the outer casing with 4 #10 screws
provided (see Figure 14).
6. Route the wire harness through the hole in left
side of baffle and between firebox wrapper and
outer casing.
7.
Insert the 4 wire harnesses from behind the
remote/blower bracket through hole in rear of
bracket with bushing and through the left rectan-
gular hole to front of fireplace (see Figure 14).
8. Reconnect red wire to switch position 3.
Reconnect blue wire to switch position 1.
Reconnect green and white wires.
9.
Install the switch plate on the remote/blower
bracket with 2 #10 screws provided (see Figure
16). Route power cord out of the cabinet by
inserting it through the bushing on the outer
casing (see Figure 14). Plug fan kit into 120-
Volt grounded power supply and test operation.
Note: When switch is in the AUTO position,
the fan will start after the fireplace has run for a
few moments. The fan will continue to run for
several moments after the fireplace has been
turned off. When switch is in the ON position,
the fan will run until turned to OFF.
10. Reinstall upper louver beginning with bottom
screws (see Figure 11, page 12). Close lower
louver door.

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116658-01A 15
INSTALLATION
Continued
For Built-In Installation
WARNING: A licensed elec-
trician must connect the wiring
harness to electrical supply
following all local codes. Electri-
cian must provide a clamp on the
box cover to secure the wiring.
Wiring should be routed through
the bushing in the hole on the
outer casing of fireplace.
1. Install snap bushing from blower kit into
one hole on rear of remote/blower bracket
(see Figure 17). The other hole is for a strain
relief clamp (not supplied) to secure incoming
electrical supply.
2. Follow steps 2 through 6 in Installing Blower
Accessory, page 14.
3. A licensed electrician must follow the wiring
diagram to connect incoming electrical supply
to fan kit wiring harness (see Figure 18).
4. Plug power cord to outlet receptacle (not
provided) as shown in Figure 18. Wind extra
cable of power cord and tie up with plastic
wire strap (see Figure 17). Set cable bundle
between the remote/blower bracket and outer
casing, away from the burner.
5. Test to make sure blower is working properly.
6. Reinstall upper louver beginning with bottom
screws (see Figure 11, page 12) and close
lower louver.
3
2
1
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Blower Bracket
Assembly
Screw
Wire Harness
Switch
Plate
Switch
Power Cord
Outlet Receptacle
(not included) Remote/ Blower
Bracket
Clamp Connector
(not included)
Figure 17 - Installing Blower Bracket Assembly
Plastic Wire Strap Wire Harness
Lower Louver Door
Red
Red
Fan Switch
(Auto/Off/On)
Blue
Blue
Thermostat
Switch
(N.O.)
Green
White
Green
White
On
110/115
V.A.C. Blower
Motor
Black
Off
1
2
3
Auto
Extension Cord
Use extension cord if needed. The cord must have
a three-prong, grounding plug and a three-hole
receptacle. Make sure cord is in good shape. It must
be heavy enough to carry the current needed. An un-
dersized cord will cause a drop in line voltage. This
will result in loss of power and overheating. Use a
No. 16 AWG cord for lengths less than 50 feet.
Figure 18 - Wiring Diagram For Blower
Accessory Built-In Installation

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16
Installation must include an equipment 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 heater (see Figure 20).
IMPORTANT: Install equipment shutoff valve
in an accessible location. The equipment shutoff
valve is for turning on or shutting off the gas to
the appliance.
Check your building codes for any special re-
quirements for locating equipment shutoff valve
to fireplaces.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could result
in clogged fireplace valves.
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
INSTALLATION
Continued
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 38.
Figure 20 - Gas Connection
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
3" Minimum
Approved
Flexible
Gas Line
Pipe Nipple Cap Tee Joint
PROPANE/LP
From External
Regulator (
11"
W.C.**
to 14" W.C.
Pressure)
NATURAL
From Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)
Sediment Trap
Propane/LP
Supply
Tank External
Regulator
Figure 19 - External Regulator With Vent
Pointing Down
Vent
Pointing
Down
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 45° male flare fitting
5/8"-18 UNF (Unified National Fine
Thread) inlet connection and the
flexible gas line provided.
WARNING: A qualified service
person must connect fireplace to
gas supply. Follow all local codes.
WARNING: Never connect natu-
ral gas fireplace to private (non-util-
ity) gas wells. This gas is commonly
known as wellhead gas.
IMPORTANT: For natural gas, check gas line
pressure before connecting fireplace to gas line.
Gas line pressure must be no greater than 14 inches
of water. If gas line pressure is higher, heater
regulator damage could occur.
CAUTION: Never connect pro-
pane/LP fireplace directly to the
propane/LP supply. This fireplace
requires an external regulator
(not supplied). Install the external
regulator between the fireplace
and propane/LP supply.
For propane/LP units, 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, fireplace regulator damage could occur.
Install external regulator with the vent pointing
down as shown in Figure 19. 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 cer-
tain areas. Check your local codes.
Use pipe of 1/2" or greater diameter
to allow proper gas volume to fire-
place. If pipe is too small, undue
loss of volume will occur.

www.desatech.com
116658-01A 17
INSTALLATION
Continued
We recommend that you install a sediment trap in
supply line as shown in Figure 20, page 16. Locate
sediment trap where it is within reach for cleaning.
Install in piping system between fuel supply and
heater. Locate sediment trap where trapped mat-
ter is not likely to freeze. A sediment trap traps
moisture and contaminants. This keeps them from
going into fireplace controls. If sediment trap is
not installed or is installed wrong, fireplace may
not run properly.
CONNECTING EQUIPMENT
SHUTOFF VALVE TO HEATER
CONTROL
Installation Items Needed
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not
provided)
1. Open lower louver (see Figure 21).
NOTICE: Most building codes
do not permit concealed gas
connections. A flexible gas line
is provided to allow accessibility
from the fireplace (see Figure 21).
The flexible gas supply line con-
nection to the equipment shutoff
valve should be accessible.
2. Route flexible gas line, included, from fire-
place control to equipment shutoff valve
through side access holes in outer casing.
3. Apply pipe joint sealant lightly to male
threads of gas connector attached to flex-
ible gas line/equipment shutoff valve (see
Figure 22).
CAUTION: Avoid damage to
gas control. Hold gas control
with wrench when connecting it
to gas piping and/or fittings.
4. Check all gas connections for leaks (see
Checking Gas Connections). Feed lexible
gas line into fireplace. Make sure the entire
flexible gas line is in fireplace.
Figure 21 - Flexible Gas Line Location
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Lower
Louver
Flexible Gas
Line
Figure 22 - Attaching Flexible Gas Line
to Equipment Shutoff Valve
Flexible Gas Line
from Fireplace
Gas Regulator
Provided With
Fireplace
To Control
Valve Equipment
Shutoff
Valve
PROPANE/LP
To External Regulator
NATURAL GAS
To Gas Supply
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an
open flame to check for a leak.
Apply a noncorrosive leak detec-
tion fluid to all joints. Bubbles
forming show a leak. Correct all
leaks at once.

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18
INSTALLATION
Continued
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply and
fireplace. See guidelines under
Connecting to Gas Supply,
page 16.
PRESSURE TESTING GAS SUPPLY PIPING
SYSTEM
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect appliance with its appliance main
gas valve (control valve) and equipment
shutoff valve from gas supply piping system.
Pressures in excess of 1/2 psig will damage
heater regulator.
2. Cap off open end of gas pipe where equipment
shutoff valve was connected.
3. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve
located on or near gas meter for natural gas,
or using compressed air.
4. Check all joints of gas supply piping system.
Apply noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect fireplace and equipment shutoff
valve to gas supply. Check reconnected fittings
for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG
(3.5 kPa)
1. Close equipment shutoff valve (see Figure 23).
2. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve
located on or near gas meter for natural gas,
or using compressed air.
3. Check all joints from gas meter to equipment
shutoff valve for natural gas or propane/LP sup-
ply to equipment shutoff valve for propane/LP
(see Figures 24 or 25). Apply noncorrosive leak
detection fluid to all joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
PRESSURE TESTING FIREPLACE GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure 23).
2. Open main gas valve located on or near gas
meter for natural gas or open propane/LP
supply tank valve.
3. Make sure control knob of fireplace is in the
OFF position.
4. Check all joints from equipment shutoff valve
to gas control valve (see Figures 24 or 25).
Apply noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light fireplace (see Operating Fireplace, page
22). Check all other internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas to Ap-
pliance, page 23).
Figure 24 - Checking Gas Joints
(Propane/LP Only)
Propane/LP
Supply
Tank
Equipment
Shutoff
Valve
Equipment
Shutoff Valve
Gas Meter
Figure 25 - Checking Gas Joints (Natural
Gas Only)
Gas Control Valve
Figure 23 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Gas Control Valve

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116658-01A 19
OPTIONAL WIRELESS HAND-HELD
REMOTE CONTROL ACCESSORIES
Installing Receiver
1. Disconnect wires from the control valve (see
Figure 26).
2. Locate the battery clip mounted on the back
of the receiver (see Figure 27).
3. Slide 9-volt battery (not included) through the
clip.
4. Attach the terminal wires to the battery (see
Figure 27).
5. Connect wires from remote receiver to control
valve as shown in Figure 28.
6. Install remote receiver unit onto remote/
blower bracket using screws provided (see
Figure 28).
Installing 9-Volt Battery in Hand-Held
Remote Control Unit
1. Remove battery cover on back of remote
control unit.
2.
Attach terminal wires to the battery (not includ-
ed). Place battery into the battery housing.
3. Replace battery cover onto remote control unit.
INSTALLATION
Continued
Figure 26 - Disconnecting Wires From
Control Valve
Figure 27 - Attaching Battery to Receiver
Battery Clip
9-Volt
Battery
Receiver
Terminal
Wires
Figure 28 - Installing Remote Receiver
Remote
Receiver
White Wire to
TH Terminal on
Control Valve
Red Wire to
TPTH Terminal on
Control Valve
Figure 29 - Installing Battery in Hand-
Held Remote Control Unit
OPTIONAL WALL MOUNTED
THERMOSTAT - GWMT1
WARNING: Read and fol-
low installation instructions.
Installation should be done by
a qualified installer familiar with
low-voltage wiring procedures.
WARNING: Do not connect
this thermostat to any electrical
source! Electrical shock and/or
fire hazard will occur.
1. Remove jumper wire from control valve (see
Figure 26).
2. Connect one terminal of 25 ft. wire to the
“TH” terminal on the control valve. Connect
the other terminal to the “THTP” terminal on
the control valve. See Figure 30, page 20.
3. Route the 25 ft. wire to a convenient location
to mount your thermostat (no outside wall).
IMPORTANT: The wire may be shortened
but must not be lengthened.
The thermostat should be mounted 54" above
the floor in a location where there is good
air circulation. Avoid heat sources such as
lamps, direct sunlight, fireplace, or heat and
air conditioning ducts.
9-Volt Battery
Battery
Housing
Battery
Cover
Terminal
Wires
Remote Control Unit

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20
INSTALLATION
Continued
4. Gently remove the cover of the thermostat
from the base. Grasp the sides of the cover
firmly and pull to separate from the base.
5. Feed the electrical wires through the rectangular
slots on each side of the base (see Figure 31).
WARNING: Do not con-
nect the thermostat to a power
source. Electrical shock and/or
a fire hazard will occur.
6. Connect one bare wire end to each terminal
(“W” and “R”) of the thermostat base (see
Figure 32).
7. Install the base onto the wall with the provided
screws.
8. Move the temperature adjustment back and forth
to insure the bimetal is free from restrictions.
9. Replace the cover onto the base. (Upon in-
stallation, the thermostat must be allowed to
stabilize at room temperature for a minimum
of 30 minutes for proper operation).
10. Set the temperature adjustment to the desired
setting. This thermostat has been electroni-
cally calibrated at the factory. No adjustment
or leveling is necessary.
Figure 31 - Back View of Thermostat Base
Feed wires through
rectangular slots
W
R
Figure 32 - Thermostat Base Terminals
“W” and “R”
Terminal “W”
Terminal “R”
Figure 30 - Connecting Wire Terminals
To Wall
Thermostat
or Switch
To Wall
Thermostat
or Switch
Control Valve
OPTIONAL WALL SWITCH - GWMS2
WARNING: Read and fol-
low installation instructions.
Installation should be done by
a qualified installer familiar with
low-voltage wiring procedures.
WARNING: Do not connect
this switch to any electrical
source! Electrical shock and/or
fire hazard will occur.
1. Remove jumper wire from control valve (see
Figure 26, page 19).
2. Connect one terminal of 25 ft. wire to the
“TH” terminal on the control valve. Connect
the other terminal to the “THTP” terminal on
the control valve. See Figure 30.
3.
Route the 25 ft. wire to a convenient location to
mount your wall switch (no outside walls).
WARNING: Do not connect
the switch to a power source.
Electrical shock and/or fire haz-
ard will occur.
IMPORTANT: The wire may be shortened but
must not be lengthened.
4. Connect one bare wire end to each of the
terminals of the provided wall switch.
5. Install the wall switch and cover in the wall.
INSTALLING BRICK LINERS AND
LOG SET AND SCREEN
1. Remove packaging from brick liners previ-
ously removed from behind top louver.
2. Place rear brick liner against back of firebox.
The left and right brick liners will hold this
liner in place (see Figure 33, psage 21). Be
sure to hold the rear brick liner while installing
the sides so it will not fall forward.