Desa CRB3624NR Quick start guide
For more information, visit www.desatech.com
WARNING: If the information in this manual is not
— WHAT TO DO IF YOU SMELL GAS
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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
REMOTE-READy MODELS
CRB3624NR AND CRB3624PR
www.desatech.com 120044-01D2
SAFETy
alteration, service or
maintenance can cause
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for correct installation
-
additional information
-
-
-
-
lations in accordance with
Exception:
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WARNING: This is an
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from the room in which
and ventilation air must
Air
for Combustion and Ven-
tilation
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stalled in an aftermarket,*
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TABLE OF CONTENTS
Safety .................................................................. 2
Unpacking............................................................ 5
Product Identication........................................... 5
Local Codes......................................................... 5
Optional Remote Control Accessories................. 5
Product Features................................................. 6
Air For Combustion and Ventilation ..................... 6
Installation ........................................................... 8
Operation........................................................... 18
Inspecting Burners............................................. 21
Cleaning and Maintenance................................ 22
Wiring Diagram.................................................. 23
Specications .................................................... 23
Troubleshooting................................................. 24
Parts .................................................................. 28
Replacement Parts............................................ 30
Technical Service............................................... 30
Service Hints ..................................................... 30
Accessories ....................................................... 31
Warranty ..............................................Back Cover
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120044-01D 3
WARNING: Do not allow fans
will remain hot for a time after
-
dren when they are in the room
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-
-
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chemicals known to the state
of California to cause cancer or
-
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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. Have
replace serviced. Some people are more af-
fected by carbon monoxide than others. These
include pregnant women, people with heart or
lung disease or anemia, those under the inu-
ence of alcohol and those at high altitudes.
Natural and Propane/LP gases are odorless.
An odor-making agent is added to these gases.
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.
this heater or its controls can
WARNING: Do not use a
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SAFETy
Continued
www.desatech.com 120044-01D4
SAFETy
Continued
9. Before using furniture polish, wax, carpet
cleaner or similar products, turn heater off. If
heated, the vapors from these products may
create a white powder residue within burner
box or on adjacent walls and furniture.
10. This heater needs fresh, outside air ven-
tilation to run properly. This heater has an
Oxygen Depletion Sensing (ODS) safety
shutoff system. The ODS shuts down the
heater if enough fresh air is not available.
See Air for Combustion and Ventilation,
page 6. If heater keeps shutting off, see
Troubleshooting, page 24.
11. Do not run heater
• where ammable liquids or vapors are
used or stored
• under dusty conditions
12. Do not use this heater to cook food or burn
paper or other objects.
13. Do not use heater if any part has been ex-
posed to or under water. Immediately call
a qualied service technician to inspect
the room heater and to replace any part
of the control system and any gas control
which has been under water.
14. Do not operate heater if any log is broken.
Do not operate heater if a log is chipped
(dime-sized or larger).
15. Turn heater off and let cool before servic-
ing, installing or repairing. Make sure the
selector switch is in the OFF position. Only
a qualied service person should install,
service or repair heater.
16. Make sure the selector switch is in the
OFF position when you are away from
home for long periods of time.
17. Remote-ready heaters must not be con-
nected to any external electrical source.
18. Operating heater above elevations of
4,500 feet may cause pilot outage.
19. To prevent performance problems, do not
use propane/LP fuel tank of less than 100
lb. capacity (propane/LP units only).
20. Provide adequate clearances around air
openings.
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 (propane/LP units
only).
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 heater shall not be installed in a bed-
room or bathroom, unless installed as a
vented appliance. See Installing Damper
Clamp Accessory for Vented Operation,
page 12.
5. Before installing in a solid fuel burning re-
place, the chimney ue and rebox must
be cleaned of soot, creosote, ashes and
loose paint by a qualied chimney cleaner.
Creosote will ignite if highly heated. A dirty
chimney ue may create and distribute
soot within the house. Inspect chimney
ue for damage. If damaged, repair ue
and rebox before operating heater.
6. Do not burn solid-fuel in a masonry or
UL127 factory-built replace in which a
vent-free room heater is installed.
7. If replace has glass doors, never operate
this heater with glass doors closed. If you
operate heater with doors closed, heat
buildup inside replace will cause glass to
burst. Make sure there are no obstructions
across openings of replace.
8. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 22.
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120044-01D 5
Figure 1 - Product Identication
Control
Knob
Base
Assembly
Ignitor
Flame Adjustment Knob
Remote
Control
(Optional)
Log Set
LOCAL CODES
State of Massachusetts: The installa-
tion must be made by a licensed plumber
or gas fitter in the Commonwealth of
Massachusetts.
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.
UNPACkING
CAUTION: Do not remove the
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1. Remove logs and heater base assembly
from carton.
Note: Do not pick up heater base assem-
bly by burners. This could damage heater.
Always handle base assembly by grate.
2. Remove all protective packaging applied
to logs and heater for shipment.
3. Check all items for any shipping damage.
If damaged, promptly inform dealer where
you bought heater.
PRODUCT IDENTIFICATION
Install and use heater with care. Follow all
local codes. In the absence of local codes,
use the latest edition of The National Fuel
Gas Code, ANSI Z223.1/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
OPTIONAL REMOTE CONTROL ACCESSORIES
There are four optional remote controls that
can be purchased separately:
• wall switch
• hand-held ON/OFF remote
• wall thermostat
• hand-held thermostat remote
See Accessories, page 31.
The wall thermostat or hand-held thermostat
may not be used where vented decorative
listing is required.
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AIR FOR COMBUSTION AND VENTILATION
The following are excerpts from National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Air for
Combustion and Ventilation.
All spaces in homes fall into one of the three
following ventilation classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned Space
The information on pages 6 through 8 will help
you classify your space and provide adequate
ventilation.
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.
construction where:
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and
and
If your home meets all of the three criteria
PRODUCT FEATURES
This heater is clean burning. It requires no
outside venting. There is no heat loss out a
vent or up a chimney. Heat is generated by
both realistic ames and glowing coals. This
heater is designed for vent-free operation
with ue damper closed. It has been tested
and approved to ANSI Z21.11.2 standard for
unvented heaters. State and local codes in
some areas prohibit the use of vent-free heat-
ers. This heater may also be operated as a
vented decorative (ANSI Z21.60) product by
opening the ue damper (only when thermo-
stat remote control is not installed).
This heater has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shutoff system. The
ODS/pilot is a required feature for vent-free
room heaters. The ODS/pilot shuts off the
heater if there is not enough fresh air.
ELECTRONIC IGNITION SYSTEM
This heater has an electronic ignitor to light
heater fuel supply.
WARNING: This heater shall
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National Fuel Gas
Code, ANSI Z223.1/NFPA 54, the
International Fuel Gas Code, or
Today’s homes are built more energy efcient
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
efcient, 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.
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120044-01D 7
AIR FOR COMBUSTION AND VENTILATION
Continued
See Ventilation Air From Outdoors
If your home does not meet all of the
Determin-
ing Fresh-Air Flow For Heater Location,
The National Fuel Gas Code, ANSI Z223.1/
NFPA 54 denes a conned space as a space
whose volume is less than 50 cubic feet per
1,000 Btu/hr (4.8 m3per kw) of the aggregate
input rating of all appliances installed in that
space and an unconned space as a space
whose volume is not less than 50 cubic feet per
1,000 Btu/hr (4.8 m3per kw) of the aggregate
input rating of all appliances installed in that
space. Rooms communicating directly with the
space in which the appliances are installed*,
through openings not furnished with doors, are
considered a part of the unconned space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation
grills between them.
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION
Use this work sheet to determine if you have
a conned or unconned space.
Includes the room in which you will install
replace 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 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2560 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: 2560 cu. ft. (volume of space) x 20
= 51,200 (maximum Btu/Hr the space can
support)
3. Add the Btu/Hr of all fuel burning appliances
in the space.
Vent-free 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 the space can
support)
_______ Btu/Hr (actual amount used)
Example: 51,200 Btu/Hr (maximum the
space can support)
73,000 Btu/Hr (actual amount of
Btu/Hr used)
The space in the above example is a conned
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 unconned space, remove door to adjoin-
ing room or add ventilation grills between
rooms. See Ventilation Air From Inside
Building, page 8.
B. Vent room directly to the outdoors. See
Ventilation Air From Outdoors, page 8.
C. Install a lower Btu/Hr replace, if lower Btu/
Hr size makes room unconned.
If the actual Btu/Hr used is less than the maxi-
mum Btu/Hr the space can support, the space is
an unconned space. You will need no additional
fresh air ventilation.
WARNING:If the areainwhich
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National Fuel
Gas Code,ANSI Z223.1/NFPA54,
the International Fuel Gas Code,
40,000
33,000
73,000
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AIR FOR COMBUSTION AND VENTILATION
Continued
This fresh air would come from an adjoining
unconned space. When ventilating to an
adjoining unconned 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 2). You can also remove door
into adjoining room (see option 3, Figure 2).
Follow the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Air for Combustion and
Ventilation for required size of ventilation
grills or ducts.
Figure 3 - Ventilation Air from Outdoors
Outlet
Air
V e ntilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air V e ntilated
Crawl Space
T o
Crawl
Space
T o Attic
INSTALLATION
NOTICE: This heater is intended
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Figure 2 - Ventilation Air from Inside Building
Or
Remove
Door into
Adjoining
Room,
Option
3
Ve ntilation Grills
Into Adjoining Room,
Option 2
Ve ntilation
Grills Into
Adjoining
Room,
Option 1
12"
12"
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 thermo-
stat-controlled power vent. Heated air entering
the attic will activate the power vent.
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NOTICE: State or local codes
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WARNING: Make sure the
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120044-01D 9
CAUTION: This heater cre-
currents move heat to wall sur-
heater next to vinyl or cloth wall
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the air exist, may discolor walls
IMPORTANT:Vent-free heaters add moisture
to the air. Although this is benecial, installing
heater in rooms without enough ventilation
air may cause mildew to form from too much
moisture. See Air for Combustion and Ventila-
tion, page 6.
Use the correct type of gas (natural or
propane/LP). If your gas supply is not the
correct gas type, do not install heater. Call
dealer where you bought heater for proper
type heater.
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INSTALLATION AND CLEARANCES
WARNING: Maintain the
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Side Wall 16", Ceiling 42"
Floor 5", Front 42"
INSTALLATION
Continued
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WARNING: Seal any fresh
air vents or ash clean-out doors
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WARNING: Never install the
heater
unless installed as a vented
heater
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INSTALLATION
Continued
Clearances
Note: If using a mantel proceed to If Using
Mantel. If not using a mantel, follow the infor-
mation on this page.
You must have noncombustible material(s)
above the replace opening. Noncombustible
materials (such as slate, marble, tile, etc.) must
be at least 1/2" thick. With sheet metal, you
must have noncombustible material behind it.
Noncombustible material must extend at least
8" up. If noncombustible material is less than
12", you must install the replace hood acces-
sory. See Figure 5 for minimum clearances.
Heat Resistant
Material
(A)
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
12" or more Noncombustiblematerial
OK.
Between 8" and 12"
Install fireplace hood
accessory (GA6050,
GA6052 or GA6053 see
Accessories, page 31).
Less than 8" Noncombustiblematerial
must be extended to at
least 8". See Between
8" and 12", above. If you
cannot extend material,
you must operate heater
with ue damper open.
Front
Width
Rear
Width*
17" 14" 26" 18"
*Measured at 14" depth
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
Carefully follow the instructions below. This
will ensure safe installation into a masonry,
UL127-listed manufactured replace or listed
vent-free rebox.
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A. Clearances from the side of the replace
cabinet to any combustible material and
wall should follow diagram in Figure 4.
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 cabinet (see Figure 4).
Note: When installing your gas logs into
a manufactured rebox, follow rebox
manufacturer’s instructions for minimum
clearances to combustible materials.
B. Clearances from top of replace opening
to ceiling should not be less than 42".
NOTICE: Manual control heaters
If so, you must always run heater
Installing Damper
Clamp Accessory for Vented
Operation
You must have noncombustible material(s)
above the replace opening. Noncombustible
materials (such as slate, marble, tile, etc.)
must be at least 1/2" thick. With sheet metal,
you must have noncombustible material be-
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120044-01D 11
INSTALLATION
Continued
MANTEL CLEARANCES
In addition to meeting noncombustible mate-
rial clearances, you must also meet required
clearances between replace opening and
mantel shelf. If you do not meet the clearances
listed below, you will need a hood.
If you meet minimum clearance between
mantel shelf and top of replace opening, a
hood is not required (see Figure 6).
If minimum clearances in Figure 6, are not
met, you must have a hood. When using a
hood there are still certain minimum mantel
clearances required. Follow minimum clear-
ances shown in Figure 7, when using hood.
minimum clearances shown in
NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
-
Figure 6 - Minimum Mantel Clearances
Without Using Hood
Figure 7 - Minimum Mantel Clearances
When Using Hood
Minimum
Noncombustible
Material
Minimum
Noncombustible
Material Height
Distances to
Underside of
Mantel
Top of
Fireplace
Opening
Underside of
Mantel Shelf
12"
(A)
18" 20" 22" 24"
2
1/2
"
6"
8"
10"
Mantel Shelf
hind it. Noncombustible material must extend
at least 8" up. If noncombustible material is
less than 12", you must install the replace
hood accessory. Even if noncombustible
material is more than 12", you may need the
hood accessory to deect heat away from
your mantel shelf. See Figure 5, page 10 and
Figures 6 and 7, for minimum clearances.
IMPORTANT: If you cannot meet these mini-
mum clearances, you must operate heater
with chimney ue damper open. Go to Install-
ing Damper Clamp Accessory for Vented
Operation, page 12.
Minimum
Noncombustible
Material 8"
Min.
12" 15" 18"
Log Sets
18", 24",
& 30"
Models
20"
2
1/2
"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood (GA6050,
GA6052,
or GA6053)
T o p of
Fireplace
Opening
Underside
of Mantel
Shelf
Mantel Shelf
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INSTALLATION
Continued
1. The replace does not meet the clearance
to combustibles requirements for vent-
free operation.
2. State or local codes do not permit vent-
free operation.
3. You prefer vented operation.
If reasons number 1 or 2 above apply to you,
you must permanently open chimney ue
damper. You must install the damper clamp
accessory (to order, see Accessories, page
31). This will insure vented operation (see Fig-
ure 10). The damper clamp will keep damper
open. Installation instructions are included
with clamp accessory.
See chart below for minimum permanent ue
opening you must provide. Attach damper
clamp so the minimum permanent ue open-
ing will be maintained at all times.
Diameter Area
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
Chimney
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
Damper
Damper
Clamp
Damper
Damper
Clamp
Damper
Figure 10 - Attaching Damper Clamp
14"
Min.
Combustible
Material
Noncombustible Material
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
FLOOR CLEARANCES
A. If installing appliance on the oor level,
you must maintain the minimum distance
of 14" to combustibles (see Figure 8).
B. If combustible materials are less than 14"
to the replace, you must install appliance
at least 5" above the combustible ooring
(see Figure 9).
Hearth
5"
Min.
Combustible
Material
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
Note: When used as a vented heater, ap-
pliance must be installed only in a solid-fuel
burning replace with a working ue and con-
structed of noncombustible material.
If your heater is a manually-controlled model,
you may use this heater as a vented product.
There are three reasons for operating your
heater in the vented mode.
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120044-01D 13
INSTALLATION
Continued
WARNING: You must secure
not, heater will move when you
-
-
-
IMPORTANT: Make sure the heater burners
are level. If heater is not level, heater will not
work properly.
Installation Items Needed
• hardware package (provided with heater)
• approved exible gas hose and ttings (not
provided) (if allowed by local codes)
• sealant (resistant to propane/LP gas, not
provided)
• electric drill with 3/16" masonry drill bit
Note: Install optional HRC200 or HRC100
Receiver and Hand-Held Remote Control Kit
(see Accessories, page 31) before installing
gas log heater. See installation instructions
included with the kit.
1. Apply pipe joint sealant lightly to male
threads of gas tting (not provided). Con-
nect approved exible gas hose to inlet
side of gas control (see Figure 11).
2.
Position heater base assembly in replace.
3. Mark screw locations through holes in
front panel of base (see Figure 12). If
installing in a brick-bottom replace, mark
screw locations in mortar joint of bricks.
4. Remove heater base from replace.
5. Drill holes at marked locations using 3/16"
drill bit.
6. Attach base, through holes in front panel
of base, to replace oor using masonry
screws provided in hardware package
(see Figure 12).
7. Connect to gas supply. See Connecting
To Gas Supply.
Figure 11 - Attaching Flexible Gas Hose
to Heater Gas Regulator
Gas Control
Flexible Gas Hose
(if allowed by local
codes)
Figure 12 - Attaching Base to Fireplace
Floor
Masonry
Screw
-
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Pipe Cap Tee
Nipple Joint
CAUTION: Never connect
-
WARNING: Never connect
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
• approved exible gas line with gas con-
nector (if allowed by local codes) (not
provided)
* A CSA design-certied equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional
CSA design-certied equipment shutoff valve
from your dealer. See Accessories, page 31.
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 re-
duce incoming gas pressure, heater regulator
Propane/LP
Supply Tank
External
Regulator
with Vent
Pointing
Down
Figure 13 - External Regulator With Vent
Pointing Down
INSTALLATION
Continued
* Purchase the optional CSA design-certied
equipment shutoff valve from your dealer.
See Accessories, page 31.
** Minimum inlet pressure for purpose of input
adjustment.
Figure 14 - Gas Connection
Gas
Control
3" Minimum
Sediment Trap
CSA Design-Certied
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved Flexible
Gas Hose (if
allowed by local
codes)
From External
Regulator
(11" W.C.**
to 14" W.C.
Pressure)
NATURAL
From Gas
Meter
(5" W.C.**
to 10.5"
W.C.
Pressure)
damage could occur. Install external regulator
with the vent pointing down as shown in Figure
13. Pointing the vent down protects it from
freezing rain or sleet.
-
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
Figures 14).
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 heater valves.
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120044-01D 15
INSTALLATION
Continued
We recommend that you install a sediment trap
in supply line as shown in Figures 14, depend-
ing on your model. Locate sediment trap where
it is within reach for cleaning. Install in piping
system between fuel supply and heater. Locate
sediment trap where trapped matter is not likely
to freeze. A sediment trap traps moisture and
contaminants. This keeps them from going into
heater controls. If sediment trap is not installed or
is installed wrong, heater may not run properly.
CHECKING GAS CONNECTIONS
and connections, internal and
external to unit, for leaks after
WARNING: Never use an
-
CAUTION: Make sure exter-
-
der Connecting to Gas Supply,
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
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 system.
Apply noncorrosive leak detection uid to all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff
valve to gas supply. Check reconnected
ttings for leaks.
1. Close equipment shutoff valve (see Fig-
ure 15).
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 Figure 16 or
17, page 16). Apply noncorrosive leak
detection uid to all joints. Bubbles form-
ing show a leak.
4. Correct all leaks at once.
CONNECTIONS
1. Open equipment shutoff valve (see Fig-
ure 15).
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 heater is in the
OFF position.
Figure 15 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
www.desatech.com 120044-01D16
2. Carefully remove logs and set aside.
3. Locate mounting screws on sides of heat-
er base assembly and remove screws. Set
screws aside for reinstallation.
4. Disconnect gas line from heater base as
shown in Figure 11, page 13.
-
5. Remove heater base from replace.
6. Install receiver bracket to base with phil-
lips screws provided in hardware kit as
shown in Figure 18.
7. Disconnect jumper wire from control valve at
TPTH and TH locations (see Figure 19).
8. Install remote receiver into receiver
bracket using pads and push button clips
provided with receiver (see Figure 20,
page 17).
9. Connect wires to control valve at the TPTH
and TH locations as shown in Figure 21,
page 17. Note: Make sure excess wire
does not interfere with burner or pilot.
10. If heater was removed from fireplace
before installation of remote accessory,
see Installing Heater Base Assembly on
page 13 to reinstall heater into replace.
Test gas connection for leaks (see Check-
ing Gas Connections, page 15).
11. If logs were removed from heater for in-
stall remote accessory, replace logs (see
Installing Logs, page 17).
INSTALLATION
Continued
Figure 19 - Disconnecting Jumper Wire
From Control Valve
Jumper
Wire
Control Valve
Figure 18 - Installing Remote Receiver
Bracket
Remote Receiver Bracket
Phillips
Screws
4. Check all joints from equipment shutoff
valve to gas control (see Figures 16 or 17).
Apply noncorrosive leak detection uid to
all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operation, page 18).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
Appliance, page 19).
Gas Meter
Figure 17 - Checking Gas Joints (Natural
Gas Only)
Control Valve
Location
Equipment
Shutoff Valve
Figure 16 - Checking Gas Joints
(Propane/LP Only)
Control Valve
Location
Propane/LP
Supply Tank
Equipment
Shutoff Valve
ACCESSORIES
Remote control accessories are available
separately (see Accessories, page 31).
1. If unit is already installed in replace,
continue with these instructions. If unit
has not been installed in replace, go to
step 6 and continue installation of remote
accessory.
WARNING: Turn off heater
www.desatech.com
120044-01D 17
INSTALLATION
Continued
Figure 20 - Installing Remote Receiver
Push
Button
Clips Bracket
Battery
Clip
9-Volt Battery
Terminal
Wires
Pad
Figure 21 - Connecting Wires
Control Valve
White Wire
From Receiver
Red Wire From
Receiver
Figure 22 - Installing Battery in Hand-Held
Remote Control Unit
9-Volt
Battery
Battery
Housing
Battery Cover
Terminal
Wires
Remote Control Unit
INSTALLING LOGS
It is very important to install these logs exactly
as instructed. Do not modify logs. Only use
logs supplied with heater.
1. Place bottom log in center of the base as-
sembly as shown in Figure 23.
2. Rest rear log in back corner sections of
base assembly as shown in Figure 23.
Make sure log is completely vertical and
not leaning in toward burner where the
ame will touch the log.
3. Position front log as shown in Figure 23,
making sure the grooves in the bottom of
the log t over the grate prongs.
Base
Assembly
Figure 23 - Installing Log Set
Bottom
Log
Front Log
and Hand Held Remote Control
Two 9-volt alkaline batteries (not included)
are required to operate this heater with the
wireless hand-held remote control set. One
battery must be installed in the receiver and
one in the hand-held remote control unit.
Note: Only use alkaline batteries.
1. Locate back of receiver behind receiver
bracket mounted on base assembly.
2. Locate the battery clip mounted on the
back of the receiver (see Figure 20).
3. Slide a 9-volt battery through the clip.
4. Attach the terminal wires to the battery.
Held Remote Control Unit
1. Remove battery cover on back of remote
control unit.
2. Attach terminal wires to the battery. Place
battery into the battery housing.
3. Replace battery cover onto remote control
unit.
www.desatech.com 120044-01D18
OPERATION
LIGHTING
INSTRUCTIONS
WARNING:
-
erate heater with doors closed,
-
-
Note: Home owners generally prefer to oper-
ate their heater with the chimney damper
closed. This will put all the heat into the room.
However, there may be times you will desire
the full ames of the HI heat setting but will
nd the heat output excessive. You can open
the chimney damper (if you have one) fully or
partially to release some of the heat.
1. STOP! Read the safety information col-
umn 1.
2. Make sure equipment shutoff valve is fully
open.
3. Set selector switch in the OFF position.
4. Press in and turn control knob clockwise
to the OFF position (see Figure 24,
page 19).
onautomatically withinone minute
when the selector switch is in the
FOR YOUR SAFETY READ
WARNING: If you do not fol-
low these instructions exactly,
-
WHAT TO DO IF YOU SMELL GAS
-
www.desatech.com
120044-01D 19
OPERATION
Continued
5. 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.
6. Press in and turn control knob counter-
clockwise to the PILOT position.
Press in control knob for ve (5) seconds
(see Figure 24).
Note: You may be running this heater for
the rst time after hooking up to gas sup-
ply. If so, the control knob may need to be
pressed in for 30 seconds or less. This will
allow air to bleed from the gas system.
7. 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, contact a
qualied 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.
8. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob.
• If control knob does not pop out when
released, turn off gas supply and contact
a qualied service person or gas supplier
for repairs.
Note: If pilot goes out, repeat steps 4
through 8, beginning on page 18.
9. Slightly push in and turn control knob coun-
terclockwise to the ON position.
10. Wait one minute and switch selector
switch to the ON position to light burners.
Note: AUTO is only functional when using
GWMT1 or GWMS2 optional accessories.
11. Set ame adjustment knob to any level
between HI and LO.
12. To leave pilot lit and shut off burners only,
turn control knob clockwise to the
PILOT position. If using hand-held remote,
use remote control manual OFF button.
Set selector switch in the OFF position.
CAUTION: Do not try to ad-
O
F
F
L
O
I
H
ON
OFF
REMOTE
P
I
L
O
T
O
N
Figure 24 - Control Knob and Ignitor
Button Location
Ignitor
Button Selector Switch
in OFF Position
Flame
Adjustment
Knob
WARNING: Make sure the se-
when you are away from home for
come on automatically with selec-
Figure 25 - Pilot (Propane/LP)
Ignitor
Electrode
Pilot
Burner
Figure 26 - Pilot (Natural)
Ignitor
Electrode
Pilot Burner
TO TURN OFF GAS
1. Turn control knob clockwise to the
OFF position.
2a. Set selector switch in the OFF position.
2b.
Set selector switch in the OFF position to
prevent draining battery.
3. Close equipment shutoff valve (see Figure
15, page 15.
Control Knob
www.desatech.com 120044-01D20
OPERATION
Continued
To Lock press both buttons on hand-held
remote control until light stops ashing. Hand-
held remote control is now locked. If the re
is on it will be turned off automatically. In the
locked state, the light will not light up when
any button is pressed.
To Unlock press both buttons together
on hand-held remote control until the light
stops ashing. The hand-held remote is now
unlocked.
The hand-held remote can be operated using
either the manual mode (MANU) or thermo-
static mode (AUTO) (see Figure 29). To select
Fahrenheit/Centigrade mode display, carefully
press the ˚C/˚F mode button with the end of a
paper clip or similar blunt object.
Figure 28 - On/Off Hand-Held Remote
Control Unit
Figure 29 - Thermostat Hand-Held
Remote Control Unit
Figure 27 - Setting the Selector switch,
Control Knob and Flame Adjustment
Knob for Remote Operation
O
F
F
P
I
L
O
T
L
O
I
H
ON
OFF
REMOTE
O
N
Selector Toggle Switch (Optional
Hand-Held Remote Control)
Control Knob in
On Position Flame Adjustment Knob
Control
Button
Indicator
Light
LOCK
MANU AUTO
ºC/ºF
TEMP POWER
ROOM
TEMP
SET
TEMP
AUTO
Turns
Hand-Held
Remote On
or Off and
Allows You
to Choose
the Manual
Setting
Selects
AUTO
Mode
°C/°F Mode
Button
Locks
System to
Prevent
Accidental
Ignition
Turns
Burners
On or
Off
Increases
or Decreases Room
Temperature in
AUTO Mode
Digital Display Shows
Temperature and Settings
MANUAL LIGHTING
1. Follow steps 1 through 6 under Lighting
Instructions, page 18.
2. Press control knob and light pilot with
match.
3.
Keep control knob pressed in for 30 seconds
after lighting pilot. After 30 seconds, release
control knob. Now follow steps 9 through 11,
see Lighting Instructions, page 19.
Note: All remote control accessories must
be purchased separately (see Accessories,
page 31). Follow instructions included with
the remote control.
-
Lighting
Instructions
After lighting, let pilot ame burn for about
one minute. Turn control knob to ON position.
Adjust ame adjustment knob anywhere be-
tween HI and LO. Slide the selector switch to
the REMOTE position (see Figure 27).
Note: The burner may light if hand-held re-
mote was on when selector switch was last
turned off. You can now turn the burner on and
off with the hand-held remote control unit.
IMPORTANT: Do not leave the selector switch
in the REMOTE or ON position when the pilot
is not lit. This will drain the battery.
Hold the control button on the hand-held
remote until burner turns on. Hold the con-
trol button again until burner turns off (see
Figure 28).
This manual suits for next models
1
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