Astria Gamma26ZTN User manual

INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
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.
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 6 of this manual.
WARNING: If the information in these instructions is not followed 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 qualified installer, service agency or the gas supplier.
Installation and Operation Instructions
AstriaTM Vent-Free Compact Dual-Flame Fireplace
P/N 126882-01 Rev.A 02/2014
PFS
®
US
Models
Gamma26ZTN
Gamma26ZTP
Gamma26ZMN
Gamma26ZMP
P126882-01

www.Astria.US.com 126882-01A2
WARNING: Improper
installation, adjustment,
alteration, service or
maintenance can cause
injury or property dam-
age. Refer to this manual
for correct installation
and operational proce-
dures. For assistance or
additional information
consult a qualified in-
staller, service agency or
the gas supplier.
WARNING: This is an
unvented gas-red heat-
er. 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 Ven-
tilation section on page 6
of this manual.
SAFETY
This appliance may be in-
stalled in an aftermarket,*
permanently located,
manufactured (mobile)
home, where not prohib-
ited 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
WARNING: This product
contains and/or generates
chemicals known to the State
of California to cause cancer or
birth defects or other reproduc-
tive harm.
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, op-
erate or service this replace.
Improper use of this replace
can cause serious injury or
death from burns, re, explo-
sion, electrical shock and carbon
monoxide poisoning.
TABLE OF CONTENTS
Safety .................................................................. 2
Product Identication........................................... 4
Optional Remote Control Accessories................. 4
Local Codes......................................................... 5
Product Features................................................. 5
Unpacking............................................................ 5
Hood Assembly .................................................. 6
Air for Combustion and Ventilation ...................... 6
Installation ........................................................... 9
Operation........................................................... 18
Inspecting Burners............................................. 23
Cleaning and Maintenance................................ 23
Wiring Diagram.................................................. 24
Troubleshooting................................................. 25
Specications .................................................... 29
Replacement Parts............................................ 29
Service Hints ..................................................... 29
Technical Service............................................... 29
Parts .................................................................. 30
Accessories ....................................................... 36

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126882-01F 3
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning: Early signs
of carbon monoxide poisoning resemble the
u, with headaches, dizziness or nausea. If
you have these signs, the replace may not
be working properly. Get fresh air at once!
Have replace serviced. Some people are
more affected by carbon monoxide than oth-
ers. These include pregnant women, people
with heart or lung disease or anemia, those
under the inuence of alcohol and those at
high altitudes.
Natural and Propane/LP Gas: Natural and
propane/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 replace.
WARNING: Any change to
this replace or its controls can
be dangerous.
WARNING: Do not use a
blower insert, heat exchanger
insert or other accessory not
approved for use with this re-
place.
WARNING: Do not allow fans
to blow directly into the replace.
Avoid any drafts that alter burner
ame patterns. Ceiling fans can
create drafts that alter burner
ame patterns. Altered burner
patterns can cause sooting.
Due to high temperatures, the
appliance should be located out
of trafc and away from furniture
and draperies.
Do not place clothing or other
ammable 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 replace. When using the
hand-held remote accessory
(Remote-Ready Models Only),
keep selector switch in the OFF
position to prevent children from
turning on burners with remote.
You must operate this replace
with the replace screen in place.
Make sure replace screen is
closed before running replace.
Keep the appliance area clear
and free from combustible
materials, gasoline and other
ammable vapors and liquids.
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)
inside 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 neighbor’s phone. Follow the gas sup-
plier’s instructions
• if you cannot reach your gas supplier,
call the re department
4. This replace shall not be installed in a
bedroom or bathroom.
SAFETY
Continued

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PRODUCT IDENTIFICATION
Ignitor Button
Screen
Fireplace
Cabinet
Log
Control
Knob
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
Hood
SAFETY Continued
5. Do not use this replace as a wood-burn-
ing replace. Use only the logs provided
with the replace.
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 replace.
7. This replace is designed to be smokeless.
If logs ever appear to smoke, turn off re-
place and call a qualied service person.
Note: During initial operation, slight smok-
ing could occur due to log curing and
replace burning manufacturing residues.
8. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 23.
9. Before using furniture polish, wax, carpet
cleaner or similar products, turn replace
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 replace needs fresh air ventilation to
run properly. This replace has an Oxygen
Depletion Sensing (ODS) safety shutoff
system. The ODS shuts down the re-
place if not enough fresh air is available.
See Air for Combustion and Ventilation,
page 6. If replace keeps shutting off, see
Troubleshooting, page 25.
11. Do not run replace
• where ammable liquids or vapors are
used or stored.
• under dusty conditions.
12. Do not use this replace to cook food or
burn paper or other objects.
13. Never place any objects in the replace
or on logs.
14. Do not use replace if any part has been
under water. Immediately call a qualied
service technician to inspect the room
replace and to replace any part of the
control system and any gas control which
has been under water.
15. Turn off and unplug replace and let cool
before servicing. Only a qualied service
person should service and repair replace.
16. Operating replace above elevations of
4,500 feet could cause pilot outage.
17. Do not operate replace if log is broken.
Do not operate replace if log is chipped
(dime-sized or larger).
18. To prevent performance problems, do
not use propane/LP fuel tank of less than
100 lb. capacity.
19. Provide adequate clearances around air
openings.
20. The screen or any other part removed
for servicing must be replaced prior to
operating this heater.
Left
Side
Right
Side
Front

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126882-01F 5
OPTIONAL REMOTE CONTROL ACCESSORIES
(For Remote-Ready Models Only)
There are ve 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
• hand-held touch-screen thermostat remote
See Accessories, page 36.
LOCAL CODES
Install and use replace with care. Follow all
local codes. In the absence of local codes,
use the latest 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
State of Massachusetts: The installation
must be made by a licensed plumber or
gas tter in the Commonwealth of Mas-
sachusetts.
Sellers of unvented propane or natural
gas-red 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
Commonwealth of Massachusetts.
PRODUCT FEATURES
SAFETY PILOT
This replace has a pilot with an Oxygen
Depletion Sensing (ODS) safety shutoff
system. The ODS/pilot is a required feature
for vent-free room replaces. The ODS/pilot
shuts off the replace if there is not enough
fresh air.
PIEZO IGNITION SYSTEM
This replace has a piezo ignitor. This sys-
tem requires no matches, batteries or other
sources to light replace.
THERMOSTATIC HEAT CONTROL
FOR THERMOSTAT-CONTROLLED
MODELS
Thermostat-Controlled models have a ther-
mostat sensing bulb and a control valve.
The thermostat will automatically modulate
the heat output to maintain a consistent
room temperature. This results in greater
replace comfort. This can also result in
lower gas bills.
UNPACKING
1. Remove replace and hood from carton.
Log is wrapped and inside replace. Do
not remove at this time.
2. Remove all protective packaging applied
to replace for shipment.
3. Make sure your replace includes one
hardware packet.
4. Check replace for any shipping damage.
If replace is damaged, call INNOVATIVE
HEARTH PRODUCTS at 1-800-655-2008
for replacement parts before returning to
dealer.

www.Astria.US.com 126882-01A6
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
efcient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning ap-
pliances need fresh air for proper combustion
and ventilation.
Exhaust fans, replaces, 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, Air for
Combustion and Ventilation.
Figure 3 - Assembling Hood
Hood
Sheet Metal
Screws
Firebox Top
Louver
AIR FOR COMBUSTION AND VENTILATION
WARNING: This heater shall
not be installed ina roomor space
unless the required volume of
indoorcombustion airis provided
by the method described in the
National Fuel Gas Code, ANSI
Z223.1/NFPA 54, the International
Fuel Gas Code, or applicable
local codes. Read the following
instructionstoinsureproper fresh
air for this and other fuel-burning
appliances in your home.
Today’s homes are built more energy efcient
than ever. New materials, increased insulation
and new construction methods help reduce
heat loss in homes. Home owners weather
WARNING: Always have
screen in place before operating
replace. This prevents exces-
sive temperatures on replace
surfaces.
WARNING: Failure to position
theparts inaccordance withthese
diagrams or failure to use only
parts specically approved with
this replace may result in prop-
erty damage or personal injury.
Tools Required:
• Phillips screwdriver • slotted screwdriver
• 5/16" hex wrench • scissors
1. If equipped, lift replace screen up and
pull out to remove (see Figure 2). Set
screen aside until installation has been
completed.
2. Cut two plastic straps to remove log from
rebox cavity. Set log aside.
3. An optional blower is available. See Ac-
cessories, page 36. Install optional blower
now. Follow installation instructions pro-
vided with blower.
4. Locate four black Phillips sheet metal
screws in hardware packet.
5. Slide hood between louver and rebox top
and align screw holes.
Figure 2 - Removing and Installing Screen
Screen
Shoulder Screw
HOOD ASSEMBLY
6. Insert screws as shown in Figure 3.
Tighten screws rmly.

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126882-01F 7
AIR FOR COMBUSTION AND VENTILATION
Continued
All spaces in homes fall into one of the three
following ventilation classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned 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 un-
usually tight construction, you must provide
additional fresh air.
Unusually tight construction is dened 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 oors, 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.
Conned and Unconned Space
The National Fuel Gas Code, ANSI Z223.1/
NFPA 54 denes a conned space as a space
whose volume is less than 50 cubic feet per
1,000 Btu/hr (4.8 m3 per kw) of the aggregate
input rating of all appliances installed in that
space and an unconned space as a space
whose volume is not less than 50 cubic feet per
1,000 Btu/hr (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 unconned 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 Conned or
Unconned Space
Use this work sheet to determine if you have
a conned or unconned space.
Space: Includes the room in which you will install
replace plus any adjoining rooms with door-
less 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 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 = (Maxi-
mum Btu/Hr the space can support)
Example: 1792 cu. ft. (volume of space) x
20 = 35,840 (maximum Btu/Hr the space
can support)
3. Add the Btu/Hr of all fuel burning appliances
in the space.
Vent-free replace __________ Btu/Hr
Gas water heater* __________ Btu/Hr
Gas furnace __________ Btu/Hr
Vented gas heater __________ Btu/Hr
Gas replace 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.
Example:
Gas water heater ________Btu/Hr
Vent-free replace ________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 space can support)
______ Btu/Hr (actual amount used)
Example: 35,840 Btu/Hr (maximum the
space can support)
40,000 Btu/Hr (actual amount of
Btu/Hr used)
30,000
+ 10,000
= 40,000

www.Astria.US.com 126882-01A8
AIR FOR COMBUSTION AND VENTILATION
Continued
The space in the previous example is a conned
space because the actual Btu/Hr used is more
than the maximum Btu/Hr the space can sup-
port. 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 unconned space, remove door to adjoin-
ing room or add ventilation grills between
rooms. See Ventilation Air From Inside
Building.
B. Vent room directly to the outdoors. See
Ventilation Air From Outdoors.
C. Install a lower Btu/Hr replace, if lower Btu/
Hr size makes room unconned.
If the actual Btu/Hr used is less than the maxi-
mum Btu/Hr the space can support, the space is
an unconned space. You will need no additional
fresh air ventilation.
WARNING: If the area in which
the heater may be operated does
not meet the required volume for
indoor combustion air, combus-
tion and ventilation air shall be
provided by one of the methods
described in the National Fuel
Gas Code, ANSI Z223.1/NFPA
54, the International Fuel Gas
Code, or applicable local codes.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining
unconned space. When ventilating to an
adjoining unconned space, you must provide
two permanent openings: one within 12" of the
ceiling and one within 12" of the oor 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, 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 perma-
nent openings: one within 12" of the ceiling
and one within 12" of the oor. 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, 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.
Figure 5 - Ventilation Air from Outdoors
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"
WARNING: A qualied ser-
vice person must install re-
place. Follow all local codes.

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126882-01F 9
INSTALLATION
IMPORTANT: Vent-free replaces add mois-
ture to the air. Although this is benecial,
installing replace 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 replace 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 replace, except where standoff spacers
are integrally attached. If standoff spacers are
attached to your replace, these spacers can be
placed directly against wall or framing materials.
Note: When installing replace directly on
carpeting, tile or other combustible material,
other than wood ooring, the replace shall be
installed on a metal or wood panel extending
the full width and depth of the replace.
Use the dimensions shown for rough openings
to create the easiest installation (see Built-In
Fireplace Installation, page 10).
CHECK GAS TYPE
Use the correct gas type (natural or propane/
LP) for your unit. If your gas supply is not cor-
rect, do not install replace. Call dealer where
you bought replace for proper type replace.
WARNING: This appliance is
equipped for either natural gas
or propane/LP gas but not both.
Gas type is indicated on the rat-
ing plate. Field conversion is not
permitted.
INSTALLATION ITEMS
Before installing replace, 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
* An equipment shutoff valve with 1/8" NPT
tap is an acceptable alternative to test gauge
connection. Purchase the optional equipment
shutoff valve from your dealer. See Accesso-
ries, page 36.
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
usingheater. Thiswillhelp circulate
the heat throughout the house. In
the event of a power outage, you
can use this heater as your primary
heat source.
WARNING: Never install the
replace
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture, cloth-
ing or other ammable objects
are less than 36" from the front,
top or sides of the replace
• as a replace insert
• in high trafc areas
• in windy or drafty areas
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 replace cre-
ates warm air currents. These cur-
rents move heat to wall surfaces
next to replace. Installing replace
next to vinyl or cloth wall coverings
or operating replace where impu-
rities (such as, but not limited to,
tobacco smoke, aromatic candles,
cleaning uids, oil or kerosene
lamps, etc.) in the air exist, may
discolor walls or cause odors.

www.Astria.US.com 126882-01A10
Note: If desired, purchase a four-sided pe-
rimeter trim kit for built-in installations. See
Accessories, page 36.
FIREPLACE CLEARANCES
WARNING: Maintain the
minimum clearances shown
in Figure 7. If you can, provide
greater clearances from oor,
ceiling and joining wall.
If your replace is to be used with an optional
mantel, the installation instructions included
with your mantel shows an approved method
of attaching the replace/mantel system to a
wall. IMPORTANT: Only use optional cabinet
or corner mantels specied in this manual.
Purchase the optional mantel from your dealer
(see Accessories, page 36).
If your replace is to be recessed into the wall,
see Built-In Fireplace Installation on page 10
to secure your replace into the wall.
CAUTION: If you install the
replace in a home garage
• replace pilot and burner must
be at least 18" above oor.
• locate replace where moving
vehicle will not hit it.
For convenience and efciency, install re-
place
• where there is easy access for operation,
inspection and service
• in coldest part of room
An optional blower kit is available from your
dealer. See Accessories, page 36. 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 replace
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 com-
bustible material must be 4" from the side
of the replace opening (see Figure 6).
INSTALLATION
Continued
Figure 7 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
B. Clearances from the top of the replace
opening to the ceiling should not be less
than 36".
C. For mantel clearances, see Figure 10 on
page 12.
MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS
Top 36", Left and Right Sides 6",
Bottom and Rear 0", Front 36"
BUILT-IN FIREPLACE INSTALLATION
Built-in installation of this replace involves
installing replace into a framed-in enclosure.
This makes the front of replace ush with wall.
An optional trim kit accessory is available (see
Accessories, page 36). Trim will extend past
sides of replace approximately 1/2". This will
cover the rough edges of the wall opening. If
installing a built-in mantel above the replace,
you must follow the clearances shown in Figure
9, page 11. Follow the instructions below to
install the replace 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, page 11, for the rough
opening. If installing in a corner, use
dimensions shown in Figure 8, page 11,
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.

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126882-01F 11
INSTALLATION
Continued
the equipment shutoff valve. The exible
gas line must be the last item installed on
the gas piping.
4. If you have not installed hood, follow
instructions on page 6.
5. Carefully set replace in front of rough
opening with back of replace inside wall
opening.
6. Attach exible gas line to replace gas
regulator. See Connecting Equipment
Shutoff Valve to Heater Control,page 14.
7. Bend four nailing anges on outer casing
with pliers (see Figure 9).
8. Attach replace to wall studs using nails
or wood screws through holes in nailing
ange.
9. Check all gas connections for leaks. See
Checking Gas Connections, page 14.
10. If using optional trim kit, install the trim
after nal nishing and/or painting of wall.
See instructions included with trim acces-
sory for attaching trim.
IMPORTANT: When nishing your rebox,
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 rebox. Combustible materials
should never overlap the rebox front facing.
Figure 8 - Rough Opening for Installing
in Corner
Figure 7 - Rough Opening for Installing
in Wall
435 /16 "
305
/8 "
611
/4 "
267
/8 "
Figure 9 - Attaching Fireplace to Wall
Studs
Note: If not installing blower accessory,
you may wish to run electrical wiring to
your replace for future blower installation
(see Accessories, page 36). Use only ap-
proved three-wire electrical wiring.
WARNING: If pre-wiring, do
not connect wiring to any electri-
cal source at this time.
Install replace electrical outlet
and connect wiring to outlet
before connecting to electrical
source. The replace electri-
cal outlet is included with the
GA3450TA blower accessory.
Only use the replace electri-
cal outlet supplied with the
GA3450TA blower accessory.
Note: A qualied installer should make all
electrical connections.
3. Install gas piping to replace location. This
installation includes an approved exible
gas line (if allowed by local codes) after
26 7/8"
26 7/8"
3/4" Off
The Floor
Minimum
15 1/4"
Nailing
Flanges
Nails or
Wood
Screws
Wall Studs

www.Astria.US.com 126882-01A12
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.
WARNING: Do not allow any
combustible/noncombustible
materials to overlap the rebox
front facing.
WARNING: Do not allow
combustible or noncombustible
materials to cover any necessary
openings like louvered slots.
WARNING: Never modify or
cover the louvered slots on the
front of the rebox.
Mantel Clearances for Built-In
Installation
If placing mantel above built-in replace, you
must meet minimum clearance between man-
tel shelf and top of replace opening.
NOTICE: Surface temperatures
of adjacent walls and mantels be-
come hot during operation. Walls
and mantels above the rebox
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.
INSTALLATION
Continued
Figure 10 - Minimum Mantel Clearances
for Built-In Installation
Mantel Shelf
Side of Firebox
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
REMOVING UPPER LOUVER
To install mantel or blower accessory, you
must rst remove the upper louver.
1. Lift screen off replace and remove log
set if installed.
2. Remove 4 screws from upper louver (see
Figure 11). 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).
Figure 11 - Removing Top Louver and
Opening Bottom Louver
Top
Louver
Bottom Louver
OPTIONAL MANTEL INSTALLATION
Refer to instructions provided with the mantel
for assembly instructions.
INSTALLING OPTIONAL BLOWER
ACCESSORY GA3450TA
Refer to instructions provided with the blower
for assembly instructions.

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126882-01F 13
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 13).
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
requirements for locating equipment shutoff
valve to replaces.
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 replace valves.
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
INSTALLATION
Continued
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 45° male are tting
5/8"-18 UNF (Unied National
Fine Thread) inlet connection
and the exible gas line provided.
WARNING: A qualified
service person must connect
replace to gas supply. Follow
all local codes.
WARNING: Never connect
natural gas replace to private
(non-utility) gas wells. This gas is
commonlyknown as wellheadgas.
IMPORTANT: For natural gas, check gas line
pressure before connecting replace to gas
line. Gas line pressure must be no greater
than 14" of water. If gas line pressure is higher,
heater regulator damage could occur.
CAUTION: Never connectpro-
pane/LP replace directly to the
propane/LP supply. This replace
requires an external regulator
(not supplied). Install the external
regulator between the replace
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"
of water. If you do not reduce incoming gas pres-
sure, replace regulator damage could occur.
Install external regulator with the vent pointing
down as shown in Figure 12. 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-
tainareas. Checkyour localcodes.
Usepipe of1/2" orgreater diameter
to allow proper gas volume to re-
place. If pipe is too small, undue
loss of volume will occur.
* Purchase the optional equipment shutoff
valve from your dealer. See Accessories,
page 36.
Figure 13 - Gas Connection
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
with Vent
Pointing
Down
Figure 12 - External Regulator With Vent
Pointing Down

www.Astria.US.com 126882-01A14
INSTALLATION
Continued
We recommend that you install a sediment
trap in supply line as shown in Figure 13, page
13. Locate sediment trap where it is within
reach for cleaning. Install in piping system
between fuel supply and heater. Locate sedi-
ment trap where trapped matter is not likely
to freeze. A sediment trap traps moisture and
contaminants. This keeps them from going
into replace controls. If sediment trap is not
installed or is installed wrong, replace 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 14).
NOTICE: Most building codes
do not permit concealed gas
connections. A exible gas line
is provided to allow accessibility
from the replace (see Figure 13).
The exible gas supply line con-
nection to the equipment shutoff
valve should be accessible.
2. Route exible gas line, included, from
fireplace 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
exible gas line/equipment shutoff valve
(see Figure 15).
CAUTION: Avoid damage to
regulator. Hold gas regulator with
wrench when connecting it to gas
piping and/or ttings (Thermostat-
Controlled Models Only).
CAUTION: Avoid damage to
gas control. Hold gas control
with wrench when connecting
it to gas piping and/or ttings
(Remote-Ready Models Only).
Figure 14 - Flexible Gas Line Location
(Remote-Ready Unit Shown)
O
F
F
P
I
L
O
T
O
N
H
I
L
O
Lower
Louver
Flexible Gas
Line
Figure 15 - Attaching Flexible Gas Line
to Equipment Shutoff Valve
Flexible Gas Line
from Fireplace
Gas Regulator
Provided With
Fireplace
To Gas Regulator (Thermostat-
Controlled Models) or Control
Valve (Remote-Ready Models)
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 ame to check for a leak.
Apply a noncorrosive leak detec-
tion uid to all joints. Bubbles
forming show a leak. Correct all
leaks at once.
4. Check all gas connections for leaks. See
Checking Gas Connections, below. Feed
exible gas line into replace. Make sure
the entire exible gas line is in replace.

www.Astria.US.com
126882-01F 15
INSTALLATION
Continued
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply and
replace. See guidelines under
Connecting to Gas Supply,
page 13.
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 equip-
ment shutoff valve from gas supply piping
system. Pressures in excess of 1/2 psig
(3.5kPa) will damage heater regulator.
2. Cap off open end of gas pipe where equip-
ment 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 sys-
tem. Apply noncorrosive leak detection
uid 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 recon-
nected ttings for leaks.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Fig-
ure 16).
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 equip-
ment shutoff valve for natural gas or
propane/LP supply to equipment shutoff
valve for propane/LP (see Figures 17 or
18). Apply noncorrosive leak detection uid
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 Fig-
ure 16).
2. Open main gas valve located on or near
gas meter for natural gas or open pro-
pane/LP supply tank valve.
3. Make sure control knob of replace is in
the OFF position.
4. Check all joints from equipment shutoff valve
to gas regulator (Thermostat-Controlled
Models) or to gas control valve (Remote-
Ready Models) (see Figures 17 or 18). Apply
noncorrosive leak detection uid to all joints.
Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light replace (see Operation, page 18).
Check all other internal joints for leaks.
7. Turn off replace (see To Turn Off Gas
to Appliance, page 19 for Thermostat-
Controlled Models or page 20 for Remote-
Ready Models).
Figure 17 - Checking Gas Joints
(Propane/LP Only)
Propane/
LP Supply
Tank
Equipment
Shutoff
Valve
Equipment
Shutoff Valve
Gas Meter
Figure 18 - Checking Gas Joints
(Natural Gas Only)
Gas Regulator or
Gas Control Valve
Figure 16 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Gas Regulator or
Gas Control Valve

www.Astria.US.com 126882-01A16
OPTIONAL WIRELESS HAND-HELD
REMOTE CONTROL ACCESSORIES
Remote-Ready Models Only (MRC
and TRC)
Installing Receiver
1. Disconnect jumper wires from the control
valve (see Figure 19).
2. Locate the battery cover on the back of
the receiver (see Figure 20).
3. Install 4-AA batteries (included) into re-
ceiver before installing into replace.
4. Connect wires from remote receiver to
control valve. See instructions provided
with remote control kit for further informa-
tion.
INSTALLATION
Continued
Figure 19 - Disconnecting Jumper Wires
From Control Valve
Figure 20 - Attaching Batteries to
Receiver
OPTIONAL WALL MOUNTED
THERMOSTAT - GWMT1
(Remote-Ready Models Only)
WARNING: Read and fol-
low installation instructions.
Installation should be done by
a qualied installer familiar with
low-voltage wiring procedures.
WARNING: Do not connect
this thermostat to any electrical
source! Electrical shock and/or
re hazard will occur.
1. Remove jumper wire from control valve
(see Figure 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
21, page 17.
3. Route the 25 ft. wire to a convenient loca-
tion 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 oor in a location where there
is good air circulation. Avoid heat sources
such as lamps, direct sunlight, replace
or heat and air conditioning ducts.
4. Gently remove cover of thermostat from
base. Grasp sides of cover rmly and pull
to separate from base.
5. Feed electrical wires through rectangular
slots on each side of base (see Figure 22).
REMOTE
NO
FFO
LEARN
ADJ.
Requires 4-AA 1.5V
alkaline batteries
Learning
butto
n
Frequenc
y
adjusting
access hole Remote Receiver
Battery cover
slides on/o
ff
Slid
e
Switch
ON
REMOTE
OF
F

www.Astria.US.com
126882-01F 17
INSTALLATION
Continued
WARNING: Do not con-
nect the thermostat to a power
source. Electrical shock and/or
a re hazard will occur.
6. Connect one bare wire end to each termi-
nal (“W” and “R”) of the thermostat base
(see Figure 23).
Figure 22 - Back View of Thermostat Base
Feed wires through
rectangular slots
W
R
Figure 23 - Thermostat Base Terminals
“W” and “R”
Terminal “W”
Terminal “R”
Figure 21 - Connecting Wire Terminals
To Wall
Thermostat
or Switch
To Wall
Thermostat
or Switch
Control Valve
OPTIONAL WALL SWITCH - GWMS2
(Remote-Ready Models Only)
WARNING: Read and fol-
low installation instructions.
Installation should be done by
a qualied installer familiar with
low-voltage wiring procedures.
WARNING: Do not connect
this switch to any electrical
source! Electrical shock and/or
re hazard will occur.
1. Remove jumper wire from control valve
(see Figure 19, page 16).
2. Connect one terminal of 25 ft. wire to the
“TH” terminal on the control valve. Con-
nect other terminal to the “THTP” terminal
on control valve. See Figure 21.
3. Route the 25 ft. wire to a convenient loca-
tion to mount your wall switch (no outside
walls).
WARNING: Do not connect
the switch to a power source.
Electrical shock and/or re 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.
7. Install base onto wall with provided
screws.
8. Move temperature adjustment back and
forth to insure the bimetal is free from re-
strictions.
9. Replace cover onto base. (Upon installa-
tion, thermostat must be allowed to sta-
bilize at room temperature for a minimum
of 30 minutes for proper operation).
10. Set temperature adjustment to desired
setting. This thermostat has been elec-
tronically calibrated at the factory. No
adjustment or leveling is necessary.

www.Astria.US.com 126882-01A18
INSTALLING LOG SET AND SCREEN
1. Remove log packaging material and discard
packaging. Gently place log over burner (see
Figure 24). Do not allow log to contact ame.
If ame contacts log, soot will be created.
2. Reattach screen by placing notches in
screen frame over shoulder screws and
pushing down.
INSTALLATION
Continued
Log
Shoulder
Screw
Screen
Figure 24 - Installing Log and Screen
OPERATION
THERMOSTAT-CONTROLLED MODELS
hand, don’t try to repair it, call a quali-
ed service technician or gas supplier.
Force or attempted repair may result in
a re or explosion.
D. Do not use this appliance if any part
has been under water. Immediately call
a qualied service technician to inspect
the appliance and to replace any part of
the control system and any gas control
which has been under water.
LIGHTING
INSTRUCTIONS
WARNING: You must operate
this replace with the screen
in place. Make sure replace
screen is installed before run-
ning replace.
NOTICE: During initial operation
of new replace, burning logs
will give off a paper-burning
smell. Open window to vent
smell. Operate replace on HI
position to burn off odor. This
will only last a few hours.
1. STOP! Read the safety information start-
ing in column 1.
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not fol-
low these instructions exactly,
a re or explosion may result
causing property damage, per-
sonal injury or loss of life.
A. This appliance has a pilot which must
be lighted by hand. When lighting the
pilot, follow these instructions exactly.
B. BEFORE LIGHTING smell all around
the appliance area for gas. Be sure to
smell next to the oor because some
gas is heavier than air and will settle
on the oor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do
not use any phone in your building.
• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
• If you cannot reach your gas supplier,
call the re department.
C. Use only your hand to push in or turn
the gas control knob. Never use tools.
If the knob will not push in or turn by

www.Astria.US.com
126882-01F 19
2. Make sure equipment shutoff valve is fully
open.
3. Turn control knob clockwise to the
OFF position.
4. Wait ve (5) minutes to clear out any gas.
Then smell for gas, including near the
oor. If you smell gas, STOP! Follow “B”
in the safety information, page 18. If you
don’t smell gas, go to the next step.
5. Turn control knob counterclockwise
to the PILOT position. Press in control knob
for ve (5) seconds (see Figure 25).
Note: You may be running this replace
for the rst time after hooking up to gas
supply. If so, the control knob may need to
be pressed in for 30 seconds or more. This
will allow air to bleed from the gas system.
• If control knob does not pop out when
released, contact a qualified service
person or gas supplier for repairs.
6. With control knob pressed in, press and
release ignitor button. This will light pilot. The
pilot is attached to the front burner. If needed,
keep pressing ignitor button until pilot lights.
Note: If pilot does not stay lit, refer to
Troubleshooting, page 25. Also, contact a
qualied service person or gas supplier for
repairs. Until repairs are made, light pilot
with match. To light pilot with match, see
Manual Lighting Procedure, page 20.
7. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob.
Note: If pilot goes out, repeat steps 3
through 7. This replace has a safety inter-
OPERATION Continued
THERMOSTAT-CONTROLLED MODELS
Figure 25 - Control Knob In The OFF
Position
Ignitor
Button Control
Knob
Figure 26 - Natural Gas Pilot
Thermocouple
Ignitor
Electrode Pilot Burner
Figure 27 -Propane/LP Gas Pilot
Thermocouple
Ignitor
Electrode Pilot Burner
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Fireplace
1. Turn control knob clockwise to the
OFF position.
2. Turn off all electric power to the appliance
(if applicable) if service is to be performed.
3. Close equipment shutoff valve (see Figure
16, page 15).
THERMOSTAT CONTROL
OPERATION
The thermostat used on this replace senses
the room temperature. At times the room may
exceed the set temperature. If so, the burner
will shut off. The burner will cycle back on
when room temperature drops below the set
temperature.
The control knob can be set to any heat level
between HI and LO.
Note: The thermostat sensing bulb measures
the air near the replace cabinet. This may
not always agree with room temperature (de-
pending on housing construction, installation
location, room size, open air temperatures,
etc.). Frequent use of your replace will let you
determine your own comfort levels.
lock system. Wait one (1) minute for system
to reset before lighting pilot again.
8. Turn control knob counterclockwise
to desired heating level. The burner
should light. Set control knob to any heat
level between HI and LO.
9. To leave pilot lit and shut off burners only,
turn control knob clockwise to the
PILOT position.
CAUTION: Do not try to ad-
just heating levels by using the
equipment shutoff valve.

www.Astria.US.com 126882-01A20
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 5 under Lighting
Instructions, beginning on page 18.
2. With control knob pressed in, strike match.
Hold match to pilot until pilot lights.
3. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob. Now follow step 8
under Lighting Instructions, column 2.
OPERATING OPTIONAL
BLOWER
This blower has three settings: ON, OFF and
AUTO. In the ON position, the blower will oper-
ate constantly. In the OFF position, the blower
will not operate. In the AUTO position, the
blower will start when the thermostat senses
a sufcient increase in rebox temperature. Figure 28 - AUTO/OFF/ON Blower Switch
AUTO/OFF/ON Switch
REMOTE-READY MODELS
OPERATION Continued
THERMOSTAT-CONTROLLED MODELS
D. Do not use this appliance if any part
has been under water. Immediately call
a qualied service technician to inspect
the appliance and to replace any part of
the control system and any gas control
which has been under water.
LIGHTING
INSTRUCTIONS
WARNING: You must operate
this replace with the screen
in place. Make sure replace
screen is installed before run-
ning replace.
NOTICE: During initial operation
of new replace, burning logs
will give off a paper-burning
smell. Open window to vent
smell. Operate replace on HI
position to burn off odor. This
will only last a few hours.
WARNING: Burner will come
on automatically within one min-
ute when control valve is in the
ON position after the pilot is lit.
Note: Your replace and thermostat blower
will not turn on and off at the same time.
The replace may run for several minutes
before the blower turns on. After the heater
modulates to the pilot position, the blower will
continue to run. The blower will shut off after
the rebox temperature decreases.
Note: It is safe to operate replace with blower
turned off. However, the blower helps distrib-
ute heated air from the replace.
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not fol-
low these instructions exactly,
a re or explosion may result
causing property damage, per-
sonal injury or loss of life.
A. This appliance has a pilot which must
be lighted by hand. When lighting the
pilot, follow these instructions exactly.
B. BEFORE LIGHTING smell all around the ap-
pliance area for gas. Be sure to smell next
to the oor because some gas is heavier
than air and will settle on the oor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do
not use any phone in your building.
• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
• If you cannot reach your gas supplier,
call the re department.
C. Use only your hand to push in or turn the
gas control knob. Never use tools. If the
knob will not push in or turn by hand, don’t
try to repair it, call a qualied service tech-
nician or gas supplier. Force or attempted
repair may result in a re or explosion.