Desa FLAME-MAX VML27NR Specification sheet
For more information, visit www.desatech.com
WARNING: If the information in this manual is not fol-
— WHAT TO DO IF YOU SMELL GAS
• Do not touch any electrical switch; do not use any
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FLAME-MAX®MULTI-SIDED LOG DESIGN
VML27NR AND VML27PR
REMOTE CONTROL READY MODEL
UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
www.desatech.com 111115-01F2
SAFETY INFORMATION
TABLE OF CONTENTS
Safety Information ............................................... 2
Product Identication........................................... 5
Local Codes......................................................... 5
Unpacking............................................................ 5
Product Features................................................. 5
Remote Control Accessories ............................... 5
Air For Combustion and Ventilation ..................... 6
Installation ........................................................... 8
Operating Heater............................................... 19
Inspecting Burners ............................................ 22
Cleaning and Maintenance................................ 23
Wiring Diagram.................................................. 24
Specications .................................................... 24
Replacement Parts............................................ 24
Service Hints ..................................................... 24
Technical Service............................................... 24
Troubleshooting................................................. 25
Accessories ....................................................... 29
Illustrated Parts Breakdown and Parts List........ 30
Warranty Information ...........................Back Cover
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teration, service or main-
tenance can cause in-
Refer to this manual for
correct installation and
For assistance or addi-
tional information con-
is for installation only in a
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installationsinaccordance
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tion: Do not install this
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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111115-01F 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 head-
aches, dizziness or nausea. If you have these signs,
the heater may not be working properly. Get fresh
air at once! Have heater serviced. Some people
are more affected by carbon monoxide than others.
These include pregnant women, people with heart
or lung disease or anemia, those under the inuence
of alcohol and those at high altitudes.
Natural and pro-
pane/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 warn-
ings. Keep this manual for reference. It is your
guide to safe and proper operation of this heater.
this heater or its controls can
WARNING: Do not use a
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SAFETY INFORMATION
Continued WARNING: Do not allow fans
will remain hot for a time after
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dren when they are in the room
hand-held remote accessory,
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1. This appliance is only for use with the type of
gas indicated on the rating plate. This appliance
is not convertible for use with other gases.
2. Do not place propane/LP supply tank(s) in-
side any structure. Locate propane/LP supply
tank(s) outdoors (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 bedroom 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. Inspect chimney ue
for damage. If damaged, repair ue 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. This log heater is designed to be smokeless. If
logs ever appear to smoke, turn off heater and
call a qualied service person. Note: During
initial operation, slight smoking could occur
due to log curing and heater burning manu-
facturing residues.
9. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 23.
10. 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 or furniture.
SAFETY INFORMATION
Continued
11. This heater needs fresh, outside air ventilation to
run properly. This heater has an oxygen depletion
sensing (ODS) pilot light safety system. The
ODS shuts down the heater if not enough fresh
air is available. See Air for Combustion and
Ventilation, page 6. If heater keeps shutting off,
see Troubleshooting, page 25.
12. Do not run heater
• where ammable liquids or vapors are
used or stored
• under dusty conditions
13. Do not use this heater to cook food or burn
paper or other objects.
14. Do not use heater if any part has been exposed
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.
15. Do not operate heater if any log is broken. Do
not operate heater if a log is chipped (dime-
sized or larger).
16. Turn heater off and let cool before servicing
or repairing. If using optional remote control
accessories, make sure the selector switch is in
the OFF position. Only a qualied service per-
son should install, service or repair heater.
17. If using optional remote control accessories,
make sure the selector switch is in the OFF
position when you are away from home for
long periods of time.
18. This heater must not be connected to any
external electrical source.
19. To prevent performance problems, do not
use propane/LP fuel tank of less than 100 lb.
capacity (propane/LP units only).
20. Operating heater above elevations of 4,500
feet could cause pilot outage.
21. Provide adequate clearances around air openings.
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.
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111115-01F 5
PRODUCT
IDENTIFICATION
Figure 1 - Product Identication
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Control Knob
Log Set
Base
Assembly
Optional
Hand-Held
Remote
Control
Flame Adjustment Knob
Control Cover Log
Piezo
Ignitor
LOCAL CODES
Install and use heater with care. Follow all local
codes. In the absence of local codes, use the lat-
est edition of The National Fuel Gas Code ANSI
Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
Note: Where listed vented decorative logs are
required, thermostat operation is not permitted.
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 the burner. 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 FEATURES
OpERATION
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 realistic, dancing
yellow ames. 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 heaters. This
heater may also be operated as a vented decorative
product (ANSI Z21.60) by opening ue damper
(non-thermostat operation only).
AppLICATION
These multisided logs are designed to be equally
beautiful when viewed from any angle. They
are designed specically for use in see-through,
peninsula and island fireboxes with multiple
openings. You may also install this log heater in
a standard rebox.
SAFETY pILOT
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.
pIEzO IGNITION SYSTEM
This heater has a piezo ignitor. This system re-
quires no matches, batteries or other sources to
light heater.
REMOTE CONTROL
ACCESSORIES
There are four optional remote controls that can be
purchased separately for this log heater:
• wall switch
• wall thermostat
• hand-held ON/OFF remote
• hand-held thermostat remote
See Accessories, page 29.
Note: The wall thermostat or hand-held thermostat
may not be used where vented decorative listing
is required.
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construction where:
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and
and
If your home meets all of the three criteria
See Ventilation Air From Outdoors
If your home does not meet all of the three
Determining
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
per hour (4.8 m3 per 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 per hour
(4.8 m3 per kw) of the aggregate input rating of
all appliances installed in that space. Rooms com-
municating directly with the space in which the
appliances are installed*, through openings not
furnished with doors, are considered a part of the
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
heater 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)
AIR FOR COMBUSTION
AND VENTILATION
WARNING: This heater shall
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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 appliances 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, Section 5.3,
Air for Combustion and Ventilation.
All spaces in homes fall into one of the three fol-
lowing ventilation classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned Space
The information on pages 4 through 6 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 unusually
tight construction, you must provide additional
fresh air.
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111115-01F 7
Example: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2,560 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: 2,560 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. Di-
rect-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 of Btu/Hr 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 example is a conned space because
the actual Btu/Hr used is more than the maximum
Btu/Hr the space can support. You must provide ad-
ditional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoin-
ing room. If the extra space provides an unconned
space, remove door to adjoining room or add
ventilation grills between rooms. See Ventilation
Air From Inside Building.
B. Vent room directly to the outdoors. See Ventila-
tion Air From Outdoors.
C. Install a lower Btu/Hr replace, if lower Btu/Hr
size makes room unconned.
AIR FOR COMBUSTION
AND VENTILATION
Continued
40,000
33,000
73,000
If the actual Btu/Hr used is less than the maximum
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
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in the National Fuel Gas Code,
ANSI Z223.1/NFPA54 Section 5.3
This fresh air would come from an adjoining un-
conned 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, Section 5.3, 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
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills Into
Adjoining
Room,
Option 1
12"
12"
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INSTALLATION
NOTICE: This heater is intended
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NOTICE:Stateorlocalcodesmay
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cleaned of soot, creosote, ashes
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WARNING: Seal any fresh
air vents or ash clean-out doors
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WARNING: Never install the
heater
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• in a recreational vehicle
• where curtains, furniture, cloth-
are less than 42" from the front,
• in windy or drafty areas
Figure 3 - Ventilation Air from Outdoors
Provide extra fresh air by using ventilation grills or
ducts. You must provide two permanent openings:
one within 12" of the ceiling and one within 12"
of the 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,
Section 5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
IMPORTANT: Do not provide openings for inlet
or outlet air into attic if attic has a thermostat-
controlled power vent. Heated air entering the attic
will activate the power vent.
AIR FOR COMBUSTION
AND VENTILATION
Continued
Outlet
Air
Ventilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
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111115-01F 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 Ventilation, page 6.
CHECK GAS TYpE
Use the correct gas type (natural or propane/LP)
for your unit. If your gas supply is not correct, do
not install heater. Call dealer where you bought
heater for proper type heater.
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INSTALLATION AND CLEARANCES
WARNING: Maintain the
INSTALLATION
Continued
27" 17" 19" 32"
MINIMUM FIREpLACE CLEARANCE TO
27" 16" 42"
Carefully follow the instructions below. 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 fireplace
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 combus-
tible material must be 4" from the side of the
replace cabinet (see Figure 4).
Note: When installing your gas logs into
a manufactured firebox, follow firebox
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".
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
NOTICE: Manual control heaters
If so, you must always run heater
Installing Damper
Clamp Accessory for Vented
Operation
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INSTALLATION
Continued
Clearances
Note: If using a mantel, proceed to If Using
Mantel. If not using a mantel, follow the informa-
tion below.
You must have noncombustible material(s) above
both replace openings. Noncombustible materials
(such as slate, marble, tile, etc.) must be at least
1/2" thick. With sheet metal, you must have non-
combustible material behind it. Noncombustible
material must extend at least 8" up (for all models).
If noncombustible material is less than 12", you
must install the replace hood accessory. See
Figure 5 at right for minimum clearances.
IMPORTANT: If you cannot meet these minimum
clearances, you must operate heater with chimney
ue damper open. Go to Installing Damper Clamp
Accessory for Vented Operation, page 12.
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 non-
combustible material behind it. Noncombustible
material must extend at least 8" up (for all models).
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 and 6 and
Figure 7, page 9, for minimum clearances.
IMPORTANT: If you cannot meet these minimum
clearances, you must operate heater with chimney
ue damper open. Go to Installing Damper Clamp
Accessory for Vented Operation, page 12.
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
12" or more Noncombustible
material OK.
Between 8" Install replace hood
and 12" accessory (GA6050,
GA6052 or GA6053, see
Accessories, page 29).
Less than 8" Noncombustible
material 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.
MANTEL CLEARANCES
In addition to meeting noncombustible material
clearances, you must also meet required clearances
between replace openings and mantel shelf on
each side of the replace. 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, page 11).
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, page 11 when using hood.
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111115-01F 11
Figure 6 - Minimum Mantel Clearances Without Using Hood
Minimum
Noncombustible
Material
Minimum
Noncombustible
Material Height
Distances to
Underside of
Mantel
Top of
Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
12"
(A)
18" 20" 22" 24"
All minimum
distances are
in inches
2 1/2"
6"
8"
10"
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Follow all minimum clearances
INSTALLATION
Continued
NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
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• remove the mantel
Figure 7 - Minimum Mantel Clearances When Using Hood
Minimum
Noncombustible
Material
8"
Min.
12" 15" 18" 20"
2½"
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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INSTALLATION
Continued
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).
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
14"
Min.
Combustible
Material
Noncombustible Material
Hearth
5"
Min.
Combustible
Material
Round Flues
Diameter Area
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
Chimney Minimum permanent
6' to 15' 39 sq. inches
15' to 30' 29 sq. es
Figure 10 - Attaching Damper Clamp
Damper
Clamp
Damper
Manufactured
Damper
Damper
INSTALLING DAMpER CLAMp
OpERATION
Note: When used as a vented heater, appliance
must be installed only in a solid-fuel burning
replace with a working ue and constructed 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:
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 29). 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 opening will be
maintained at all times.
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111115-01F 13
INSTALLATION
Continued
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Fitting
Flexible Gas
Hose
(if allowed by
local codes)
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Figure 11 - Attaching Flexible Gas Hose
to Heater
Figure 12 - Attaching Base Assembly to
Fireplace Floor
Masonry Screw
Mounting
Flange
CAUTION: Do not remove the
WARNING: You must secure
not, heater will move when you
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IMPORTANT: Make sure the heater burner is
level. If heater is not level, heater will not work
properly.
Installation Items Needed
• hardware package (provided with heater)
• approved exible gas hose (not provided) (if
allowed by local codes)
• sealant (resistant to propane/LP gas, not pro-
vided)
• electric drill with 3/16" drill bit (metal or ma-
sonry as applicable)
• athead screwdriver
1. Apply pipe joint sealant lightly to male
threads of the tting to be threaded into gas
control. Connect approved exible gas hose
to gas control tting in heater (see Figure 11).
IMPORTANT: Hold gas tting with wrench
when connecting exible gas hose.
2.
Locate two masonry screws in hardware
package.
3. Place heater base in replace.
4. Place logs in their proper position on heater
base. See Installing Logs, page 17.
5. Center heater base and logs front-to-back and
side-to-side in replace.
6. Carefully remove logs without moving heater
base.
7. Mark screw locations through one hole on
each side of the mounting bracket (see Figure
12). If installing in a brick-bottom replace,
mark screw locations in mortar joint of
bricks.
8. Remove heater base from replace. If install-
ing optional control accessories, do so at this
time. Follow all directions provided with
accessory. See Installing Optional Remote
Control Accessories, page 14.
9. Drill holes at marked locations using 3/16"
drill bit.
10. Attach base assembly to replace oor using
two masonry screws (in hardware package).
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Figure 13 - Disconnecting Jumper Wire
from Control Valve
Jumper Wire
Control Valve
INSTALLING OpTIONAL REMOTE
CONTROL ACCESSORIES
All remote control accessories are available
separately (see Accessories, page 29). The remote
receiver for these accessories will be installed
using the bracket located on the front left side
of the base.
1. Disconnect jumper wire from control valve at
TPTH and TH locations (see Figure 13),
2, Install remote receiver into receiver bracket
using push button clips provided with receiver
(see Figure 14).
3. Connect wires to control valve at the TPTH
and TH locations as shown in Figure 15.
INSTALLATION
Continued
Figure 15 - Connecting Wires
Control
Valve
White
Wire From
Receiver
Red Wire From
Receiver
Figure 14 - Installing Remote Receiver
Remote
Receiver
Push Button
Clips
Bracket Battery Clip
9-Volt Battery
Terminal
Wires
Pad
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 14).
3. Slide a 9-volt battery through the clip.
4. Attach the terminal wires to the battery.
Hand-Held Remote Control Unit
1. Remove battery cover on back of remote
control unit.
2. Attach terminal wires to battery. Place battery
into battery housing.
3. Replace battery cover onto remote control
unit.
Figure 16 - Installing Battery in Hand-Held
Remote Control Unit
Battery Cover
9-Volt Battery
Terminal
Wires
Remote Control Unit
Battery
Housing
www.desatech.com
111115-01F 15
CONNECTING TO GAS SUppLY
CAUTION: Never connect
-
WARNING: Never connect
Installation Items Needed
Before installing heater, make sure you have the
items listed below.
• external regulator (for propane/LP units only,
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 alternative to
test gauge connection. Purchase the optional CSA
design-certied equipment shutoff valve from your
dealer. See Accessories, page 29.
INSTALLATION
Continued
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, heater regulator damage could occur. Install
external regulator with the vent pointing down
as shown in Figure 17. 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 Figure 18,
page 16).
IMPORTANT: Install equipment shutoff valve
in an accessible location. The equipment shutoff
valve is for turning on or shutting off the gas to
the appliance.
Check your building codes for any special re-
quirements for locating equipment shutoff valve
to 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.
Figure 17 - External Regulator With Vent
Pointing Down
Propane/LP
Supply Tank
External
Regulator
Vent
Pointing
Down
www.desatech.com 111115-01F16
We recommend that you install a sediment trap in
supply line as shown in Figure 18. 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.
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,
pRESSURE TESTING GAS SUppLY
pIpING SYSTEM
Test pressures In Excess Of 1/2 pSIG
1. Disconnect appliance with its appliance main
gas valve (control valve) and equipment
shutoff valve from gas supply piping system.
Pressures in excess of 1/2 psig will damage
heater regulator.
2. Cap off open end of gas pipe where equipment
shutoff valve was connected.
3. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve
located on or near gas meter for natural gas
or using compressed air.
4. Check all joints of gas supply piping system.
Apply noncorrosive leak detection 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 t-
tings for leaks.
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 29.
** Minimum inlet pressure for purpose of input
adjustment.
Figure 18 - Gas Connection
Gas Control
3" Minimum
CSA Design-
Certied
Equipment Shutoff
Valve With 1/8"
NPT Tap*
Approved
Flexible Gas
Hose (if allowed
by local codes)
Cap Pipe Tee
Nipple Joint
Sediment Trap
Natural Gas
From Gas Meter
(5" W.C.** to 10.5"
W.C. Pressure)
From External
Regulator
(11" W.C.** to
14" W.C.
Pressure)
www.desatech.com
111115-01F 17
1. Close equipment shutoff valve (see Figure 19).
2. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve
located on or near gas meter for natural gas
or using compressed air.
3. Check all joints from gas meter to equipment
shutoff valve for natural gas or propane/LP
supply to equipment shutoff valve for propane/
LP (see Figure 20 or 21). Apply noncorrosive
leak detection uid to all joints. Bubbles form-
ing show a leak.
4. Correct all leaks at once.
INSTALLATION
Continued
Figure 19 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff Valve
pRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure 19).
2. Open main gas valve located on or near gas
meter for natural gas or open propane/LP
supply tank valve.
3. Make sure control knob of heater is in the OFF
position.
4. Check all joints from equipment shutoff valve
to control valve (see Figure 20 or 21). Apply
noncorrosive leak detection uid to all joints.
Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operating Heater, page 19).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appli-
ance, page 20).
INSTALLING LOGS
-
CAUTION: After installa-
With the heater set to HI, check
-
It is very important to install the logs exactly as
instructed. Do not modify logs. Only use logs
supplied with heater.
1. Place base log (#1) on grate to t as illustrated
in Figure 22, page 18. Make sure open areas of
log set line up with burner ports (see Figure 23,
page 18). Log will t securely on chassis.
IMPORTANT: Make sure log does not cover
any burner ports.
Figure 21 - Checking Gas Joints for
Propane/LP Gas
Control Valve Location
Propane/LP
Supply Tank Equipment Shutoff Valve
Figure 20 - Checking Gas Joints for
Natural Gas
Gas Meter
Equipment Shutoff Valve
Control Valve
Location
www.desatech.com 111115-01F18
2. Position left front log (#2) onto two pins on left
front and middle of base log (see Figure 24).
3. Place right rear log (#3) onto two pins on right
rear of base log (see Figure 25).
4. Place right front log (#4) onto two pins on
right front of base log (see Figure 25).
5. Place control cover log (#5) onto two pins in
front right section of base log. Be sure control
cover log seats well into cutout section of base
log (see Figure 26).
6. Place lava rock around base of heater.
INSTALLATION
Continued
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Figure 22 - Installing Bottom Log (#1)
Bottom Log (#1)
Burner
Grate
Figure 23 - Installing Log set (Top View)
Logs
Burner Ports
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P
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Figure 24 - Installing Left Top Log (#2)
Figure 25 - Installing Right Top Logs
(#3 and #4)
Right Rear
Log (#3)
Right Front
Log (#4)
Left Front Log (#2)
Figure 26 - Control Cover Log (#5)
Placement
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Control
Cover
Log (#5)
www.desatech.com
111115-01F 19
OPERATING HEATER
FOR YOUR SAFETY
WARNING: If you do not fol-
low these instructions exactly,
-
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 hand, don’t
try to repair it, call a qualied service tech-
nician 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
qualied 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:
-
erate heater with doors closed,
-
-
Note: Home owners generally prefer to op-
erate 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.
on automatically within one min-
ute when control valve is in the
1. STOP! Read the safety information col-
umn 1.
2. Make sure equipment shutoff valve is
fully open.
www.desatech.com 111115-01F20
OPERATING HEATER
Continued
3. Remove control cover log (see Figure 27).
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, page 19. 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 28).
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.
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 on page 21.
8. Keep control knob pressed in for 30 seconds
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 coun-
terclockwise to the ON position.
10. Set ame adjustment knob to any level
between HI and LO.
11. Replace control cover log (see Installing
Logs, page 17).
CAUTION: Do not try to ad-
TO TURN GAS OFF
TO AppLIANCE
1. Remove control cover log (see Figure 27).
2. Turn control knob clockwise to the
OFF position.
3. Let
unit cool. Remove all logs from base and
set remote sensor selector switch to the OFF
position.
4.
Replace control cover log (or all logs if
removed in step 3). See Installing Logs,
page 17.
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Flame
Adjustment
Knob
Figure 27 - Control Knob and Ignitor
Button Location
Control
Knob
Ignitor
Button
Control Cover Log
Ignitor
Electrode
Pilot Burner
Figure 29 - Propane/LP Gas Pilot
Figure 28 - Natural Gas Pilot
Ignitor
Electrode
Pilot Burner
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