Desa VUL24ND 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 MODELS VUL24ND, VUL24PD, VUL30ND AND VUL30PD
www.desatech.com 123220-01C2
SAFETy
alteration, service or
maintenance can cause
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for correct installation
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additional information
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masonry or UL127 factory-
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for these installations in
accordance with ANSI
that includes instructions
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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
Product Features................................................. 6
Air For Combustion and Ventilation ..................... 6
Installation ........................................................... 9
Operation........................................................... 19
Inspecting Burners............................................. 24
Cleaning and Maintenance................................ 25
Troubleshooting................................................. 26
Specications .................................................... 33
Wiring Diagram.................................................. 33
Service Hints ..................................................... 34
Technical Service............................................... 34
Replacement Parts............................................ 34
Accessories ....................................................... 35
Warranty ..............................................Back Cover
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123220-01C 3
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known to the state of California
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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
WARNING: Do not allow fans
will remain hot for a time after
-
dren when they are in the room
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www.desatech.com 123220-01C4
SAFETy
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)
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
supplier’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. This gas log set may not be in-
stalled as a vented appliance in a bedroom
or bathroom in the Commonwealth of Mas-
sachusetts.
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 25.
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 26.
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 heaters must not be connected
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.
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123220-01C 5
PRODUCT IDENTIFICATION
Figure 1 - Product Identication
Log Set
Control
Knob
Base Assembly
Ignitor
Rear Burner
Remote Control
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 heater for any shipping damage. If
heater is damaged call DESA Heating, LLC
at 1-866-672-6040 for replacement parts
before returning to dealer.
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
www.desatech.com 123220-01C6
AIR FOR COMbUSTION AND VENTILATION
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 un-
vented heaters. State and local codes in some
areas prohibit the use of vent-free heaters.
This heater may also be operated as a vented
decorative (ANSI Z21.60) product by opening
the ue damper.
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.
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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-112
and
and
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123220-01C 7
AIR FOR COMbUSTION AND VENTILATION
Continued
If your home meets all of the three criteria
Ventilation Air From Outdoors,
If your home does not meet all of the
Determin-
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 ag-
gregate 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 un-
conned 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 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 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 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.
40,000
33,000
73,000
www.desatech.com 123220-01C8
AIR FOR COMbUSTION AND VENTILATION
Continued
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
WARNING:If the areainwhich
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National Fuel
Gas Code,ANSI Z223.1/NFPA54,
the International Fuel Gas Code,
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 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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123220-01C 9
INSTALLATION
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
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.
NOTICE: This heater is intended
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NOTICE:Stateorlocalcodesmay
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WARNING: Make sure the
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www.desatech.com 123220-01C10
Front
Width
Rear
Width*
24" 17" 14" 26" 18"
30" 21" 14" 32" 22"
*Measured at 14" depth
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
INSTALLATION
Continued
Carefully follow these instructions. This will
ensure safe installation into a masonry,
UL127-listed manufactured replace or listed
vent-free rebox.
Minimum Clearances For Side
A. Clearances from the side of the replace
cabinet to any combustible material and
wall should follow diagram in Figure 4.
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
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 the top of the replace
opening to the 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
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123220-01C 11
INSTALLATION
Continued
Heat Resistant
Material
(A)
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
Material
Installation
1
2" or more Noncombustible mate-
rial OK.
Between 8" and 12"
Install replace hood
accessory (GA6050,
GA6052 or GA6053 see
Accessories, page 35).
Less than 8"
Noncombustible mate-
rial must be extended
to at least 8". See
Between 8" and 12",
above. If you cannot ex-
tend material, you must
operate heater with ue
damper open.
MATERIAL 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 be-
hind it. Noncombustible material must extend
at least 8" up. If noncombustible material is
less than 12", you must install the replace
hood accessory. See Figure 5 for minimum
clearances.
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-
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 Figures 5 and 6 and
Figure 7, page 9, 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.
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).
Figure 6 - Minimum Mantel Clearances
Without Using Hood
Minimum
Noncombustible
Material
Minimum Non-
Combustible
Material Height
Distances to
Underside of
Mantel
Top of
Fireplace
Opening
Underside of
Mantel Shelf
12"
(A)
18" 20" 22" 24"
All minimum
distances are
in inches
Log Set
24"/30"
Models
2 1/2"
6"
8"
10"
Mantel Shelf
www.desatech.com 123220-01C12
INSTALLATION
Continued
If minimum clearances in Figure 6, page 11,
are not met, you must have a hood. When
using a hood there are still certain minimum
mantel clearances required. Follow minimum
clearances shown in Figure 7, when using
hood.
minimum clearances shown in
NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
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14"
Min.
Combustible
Material
Noncombustible Material
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
Figure 7 - Minimum Mantel Clearances
When Using Hood
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 fireplace with a working flue and
constructed of noncombustible material.
For Massachusetts Residents Only: Instal-
lation of this gas log set as a vented appliance
in the Commonwealth of Massachusetts re-
quires the damper be permanently removed
or welded in the fully open position.
You may use this heater as a vented product.
There are three reasons for operating your
heater in the vented mode.
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.
Minimum
Noncombustible
Material
8"
Min.
12" 15" 18"
All minimum
distances are
in inches
Log Sets
24"/30"
Models
20"
2 1/2"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood
(GA6050,
GA6052,
or GA6053)
Top of
Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
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123220-01C 13
INSTALLATION
Continued
Diameter Area
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
Damper
Damper
Clamp
Damper
Damper
Clamp
Damper
Figure 10 - Attaching Damper Clamp
WARNING: You must secure
not, heater will move when you
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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 Receiver and Hand-Held
Remote Control Kit (see Accessories, page
35) before installing gas log heater. See instal-
lation instructions included with the kit.
If reasons number 1 or 2 apply to you, you
must permanently open chimney ue damper.
You must install the damper clamp accessory
(to order, see Accessories, page 35). This
will insure vented operation (see Figure 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.
www.desatech.com 123220-01C14
INSTALLATION
Continued
1. Apply pipe joint sealant lightly to male
threads of gas tting (provided). For Re-
mote models connect approved exible
gas hose to inlet side of gas control (see
Figure 11).
2. Position heater base assembly in
fireplace.
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
-
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 connector
(if allowed by local codes) (not provided)
* A CSA design-certied equipment shutoff
valve with 1/8" NPT tap is an acceptable al-
ternative to test gauge connection. Purchase
the optional CSA design-certied equipment
shutoff valve from your dealer.
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123220-01C 15
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
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.
CAUTION: Use only new,
-
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 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.
Propane/LP
Supply Tank External
Regulator
with Vent
Pointing
Down
Figure 13 - External Regulator With Vent
Pointing Down
INSTALLATION
Continued
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.
We recommend that you install a sediment
trap in supply line as shown in Figure 14.
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.
Pipe Cap Tee
Nipple Joint
* Purchase the optional CSA design-certied
equipment shutoff valve from your dealer.
** 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)
www.desatech.com 123220-01C16
INSTALLATION
Continued
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 sys-
tem. 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). Apply noncorrosive leak detection
uid to all joints. Bubbles forming show a
leak.
4. Correct all leaks at once.
Figure 15 - Equipment Shutoff Valve
Figure 16 - Checking Gas Joints
(Propane/LP Only)
Gas Valve or
Control Valve
Location
Propane/LP
Supply Tank
Equipment
Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Gas Meter
Figure 17 - Checking Gas Joints (Natural
Gas Only)
Gas Valve or Control
Valve Location
Equipment Shutoff Valve
www.desatech.com
123220-01C 17
INSTALLATION
Continued
CONNECTIONS
1. Open equipment shutoff valve (see
Figure 15, page 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 heater is in the
OFF position.
4. Check all joints from equipment shutoff
valve (see Figure 16 or 17, page 16). Ap-
ply noncorrosive leak detection uid to all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6.
Light heater (see Operation, page 19.
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
Appliance, page 20.
WARNING: Make sure your
-
-
Hand-Held Remote Control
The hand-held remote control uses 3 AAA
batteries (not included).
To install batteries:
1. Remove battery housing cover from back
of hand-held remote (see Figure 18).
2. Install or replace batteries.
3. Replace battery housing cover.
When batteries are installed, the "little house"
icon with current room temperature will be dis-
played (see Figure 19). This icon will always
show in the control window as long as the
batteries have power.
Figure 19 - Remote Display
+
+
-
+
-
-
AAA
AAA
AAA
Figure 18 - Battery Install Hand-Held
Remote Control
Battery Housing
Cover
Figure 20 - Battery Install Remote
Control Receiver
Battery Housing
Cover
Cover Plate
Screws
Receiver
Remote Receiver
The remote receiver uses 4 AA batteries (not
included). To install or replace batteries:
1. Locate receiver on right hand side of
unit.
2. Remove screws from cover place.
3. Remove battery housing cover.
4. Install or replace batteries.
5. Replace battery housing cover.
6. Replace cover plate.
www.desatech.com 123220-01C18
INSTALLING LOGS
-
Each log is marked with a number. These
numbers will help you identify the log when
installing. It is very important to install these
logs exactly as instructed. Do not modify logs.
Only use logs supplied with heater.
Note: Your appliance may vary from model
shown but log placement will be the same.
1. Place bottom log in center of the base as-
sembly as shown in Figure 21.
2. Rest rear log in back corner sections of
base assembly as shown in Figure 21.
Make sure log is completely vertical and
not leaning in toward burner where ame
will touch the log.
3. Position front right log against right side
of grate prongs (see Figure 21).
4. Position front left log against left side of
grate prongs (see Figure 21).
INSTALLATION
Continued
5. Place middle right log over front right and
bottom logs as shown in Figure 22. Be
sure hole in middle right log seats over
pin in bottom log.
6. Place middle left log over front left and
bottom logs as show in Figure 22. Be
sure hole in middle left log seats over pin
in front left log.
Rear Log
Grate
Prongs
Figure 21 - Installing Log Set
Bottom Log
Base Assembly Front
Right Log
Front Left
Log
Figure 22 - Installing Log Sets
Middle Right Log
Middle
Left Log
Bottom
Log
Pin on Front
Left Log
Figure 23 - Correct Log Placement
www.desatech.com
123220-01C 19
O
F
F
P
I
L
O
T
O
N
OFF HI
LO
1. STOP! Read the safety information, col-
umn 1.
2. Make sure equipment shutoff valve is
fully open.
3. Set remote selector switch in OFF
position.
on automatically within one
minute when the selector switch
4. Press in and turn control knob clockwise
to the OFF position.
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, column 1. 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 more. This will
allow air to bleed from the gas system.
CAUTION: Do not try to ad-
Figure 24 - Control Knob and Ignitor
Button Location
Control Knob
Ignitor Button
OPERATION
FOR YOUR SAFETY
WARNING: If you do not fol-
low these instructions exactly,
-
WHAT TO DO IF YOU SMELL GAS
-
LIGHTING
INSTRUCTIONS
-
www.desatech.com 123220-01C20
OPERATION
Continued
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 ignitor button pressed in
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.
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, contact a qualified service
person or gas supplier for repairs.
Note: If pilot goes out, repeat steps 4
through 8.
9. Slightly push in and turn control knob
counterclockwise to the ON
position.
10. Wait one minute and switch selector
switch to the ON position to light burners
(see Figure 25). When using in the ON
position (without remote) burners will
light on high. There is no adjustment to
the ames without using remote.
11. To leave pilot lit and shut off burners only,
turn control knob clockwise to the
PILOT position, or use remote control
manual OFF button, or set selector switch
in the OFF position.
WARNING: Make sure the
selector switch is in the OFF
Heater will come on automati-
cally with selector switch in the
ON REMOTE OFF
PRG
Figure 25 - Remote Selector Switch in
ON Position
TO TURN OFF GAS
1. Turn control knob clockwise to the
OFF position.
2. Set selector switch in the OFF position.
3. Close equipment shutoff valve (see Figure
15, page 16).
MANUAL LIGHTING
1. Follow steps 1 through 6 under Lighting
Instructions, page 19.
2. Depress control knob and light pilot with
match.
3. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob. Now follow steps 9
through 11 under Lighting Instructions.
Figure 27 - Pilot
(Propane/LP)
Pilot
Burner
Figure 26 - Pilot
(Natural)
Pilot
Burner Ignitor
Electrode
Ignitor
Electrode
This manual suits for next models
3
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