BQMV18P
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VENTED DECORATIVE GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
MODELS BQMV18N, BQMV18P,
BQMV24N AND BQMV24P
WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
— Installation and service must be performed by a quali-
fied installer, service agency or the gas supplier.
Save this manual for future reference.
For more information, visit www.desatech.com
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for correct installation
and operational procedures. For assistance or additional information consult a qualified installer, service
agency or the gas supplier.
WARNING: This appliance is for installation only in
a solid-fuel burning masonry or UL127 factory-built
fireplace, constructed of noncombustible material and
connected to a working flue. (See page 6 for minimum
flue opening.
WARNING: This is a gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provisions
for adequate combustion and ventilation air must be
provided. Refer to the National Fuel Gas Codes, ANSI
Z233.1/NFPA 54, Section 5.3, Air for Combustion and
Ventilation.
This appliance may be installed in an aftermarket,* permanently located, manufactured (mobile) home, where
not prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
State of Massachusetts: The installation must be made
by a licensed plumber or gas fitter in the Commonwealth
of Massachusetts.
TABLE OF CONTENTS
Safety Information ............................................... 3
Local Codes ........................................................ 4
Product Identification ...........................................
Unpacking ........................................................... 5
Product Features ................................................. 5
Installation ........................................................... 5
Operating Appliance .......................................... 10
Inspecting Burners .............................................11
Cleaning and Maintenance ................................ 12
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Service Hints ..................................................... 12
Technical Service .............................................. 12
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Replacement Parts ............................................ 12
Troubleshooting .................................................
Specifications ....................................................
Accessories ....................................................... 17
Wiring Diagram .................................................. 17
Illustrated Parts Breakdown and Parts List ....... 18
Warranty Information ...........................
Back Cover
117423-01A
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SAFETY INFORMATION
WARNING: This product contains and/or generates chemicals
known to the State of California
to cause cancer or birth defects
or other reproductive harm.
WARNING: Keep flue open
when operating unit.
WARNING: Do not use a blower insert, heat exchanger insert or
other accessory not approved for
use with this appliance.
WARNING: This appliance
is equipped for (natural or propane/LP) gas. Field conversion
is not permitted.
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, operate
or service this log set. Improper use
of this log set can cause serious
injury or death from burns, fire,
explosion, electrical shock and
carbon monoxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning: Early signs of carbon
monoxide poisoning resemble the flu, with headaches, dizziness or nausea. If you have these signs,
the log set may not be working properly. Get fresh
air at once! Have log set serviced. Some people
are more affected by carbon monoxide than others.
These include pregnant women, people with heart
or lung disease or anemia, those under the influence
of alcohol and those at high altitudes.
Natural & LP Gas: Natural & LP gas are odorless.
An odor-making agent is added to the gas. The
odor helps you detect a gas leak. However, the
odor added to the gas can fade. Gas may be present
even though no odor exists.
Make certain you read and understand all warnings.
Keep this manual for reference. It is your guide to
safe and proper operation of this log set.
WARNING: Do not allow fans
to blow directly into the fireplace.
Avoid any drafts that alter burner
flame patterns.
WARNING: Installed decorative glass door enclosures must
be fully opened when operating
this gas appliance.
Due to high temperatures, the
appliance should be located out
of traffic and away from furniture
and draperies.
Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects on the heater.
Appliance assembly becomes
very hot when running. Keep
children and adults away from hot
surface to avoid burns or clothing
ignition. Appliance will remain hot
for a time after shutdown. Allow
surface to cool before touching.
WARNING: Do not place log
scraps or lava rocks on burner.
Carefully supervise young chil
dren when they are in the room
with appliance.
WARNING: Any change to
this log set or its controls can
be dangerous.
You must operate this appliance
with a fireplace screen in place.
Make sure fireplace screen is
closed before running appliance.
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SAFETY INFORMATION
Continued
Keep the appliance area clear
and free from combustible materials, gasoline and other flam
mable vapors and liquids.
Children and adults should be
alerted to the hazard of high temperature and should stay away to
avoid burns or clothing ignition.
1. This appliance, as supplied, 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 the 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
neighborʼs phone. Follow the gas supplierʼs
instructions
• if you cannot reach your gas supplier, call
the fire department
4. Never install the log set
• in a recreational vehicle
• where curtains, furniture, clothing or other
flammable objects are less than 42 inches
from the front, top or sides of the log set.
• in high traffic areas
• in windy or drafty areas
5. Before installing in a solid fuel burning fireplace,
the chimney flue and firebox must be cleaned of
soot, creosote, ashes and loose paint by a qualified
chimney cleaner. Creosote will ignite if highly
heated. Inspect chimney flue for damage. If dam
aged, repair flue before operating appliance.
6. You must operate this log set with fireplace
screen in place and fully closed. Unless provided
by other means, screens shall have openings for
introduction of combustion air.
7. You must operate this log set with fireplace screen
in place and fully closed. Unless provided by
other means, screens shall have openings for
introduction of combustion air.
8. To reduce the creation of soot, follow the instruc
tions in Cleaning and Maintenance, page 12.
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9. Do not use a blower insert, heat exchanger
insert or other accessory not approved for use
with this log set.
10. The installation and provisions for combustion
and ventilation air must conform with the Na
tional Fuel Gas Codes, ANSI Z233.1/NFPA 54,
Section 5.3, Air for combustion and Ventilation.
11. Do not run heater
• where flammable liquids or vapors are used
or stored
• under dusty conditions
12. Do not burn solid fuel in the fireplace after
installing the log set. Do not use this log set
to cook food or burn paper or other objects.
13. Log set becomes very hot when in use. Keep
children and adults away from hot surface to
avoid burns or clothing ignition. Log set will
remain hot for a time after shutdown. Allow
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surface to cool before touching.
14. Carefully supervise young children when they
are in the room with the log set.
15. Do not use heater if any part has been exposed
to or under water. Immediately call a qualified
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.
16. Turn log set off and let cool before servicing,
installing or repairing. Only a qualified service
person should install, service or repair log set.
17. Prov ide adeq ua te clearan ce s around air
openings.
LOCAL CODES
Install and use log set 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.
National Fire Protection Association, Inc.
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1430 Broadway
New York, NY 10018
Battery march park
Quincy, MA 022
69
117423-01A
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PRODUCT
IDENTIFICATION
WARNING: Failure to position the parts in accordance
with these diagrams or failure
to use only parts specifically
approved with this appliance
may result in property damage
or personal injury.
Ember Pod
Piezo
Ignitor
Control
Knobs
Figure 1 - Product Identification
Chassis
Assembly
Log Set
Assembly
UNPACKING
CAUTION: Do not remove the
data plates from the grate as
sembly. The data plates contain
important warranty and safety
information.
1. Remo ve log set asse mbly from carton .
IMPORTANT: Do not pick up assembly by
logs. This could damage the unit. Always
handle assembly by grate.
2. Remove all protective packaging applied to log
set for shipment.
3. Check all items for any shipping damage. If
damaged, promptly inform dealer where you
bought appliance.
PRODUCT FEATURES
This unitized gas log set is tested and approved to
ANSI Z21.60-2003 and CSA 2.2-2003 as a vented
decorative appliance.
This unit has a piezo ignitor. This system requires
no matches, batteries or other sources to light ap
pliance.
INSTALLATION
WARNING: A qualified service person must install heater.
Follow all local codes.
WARNING: Before installing
in a solid fuel burning fireplace,
the chimney flue and firebox
must be cleaned of soot, creosote, ashes and loose paint by a
qualified chimney cleaner. Creosote will ignite if highly heated. A
dirty chimney flue may create and
distribute soot within the house.
Inspect chimney flue for damage.
If damaged, repair flue damper
before operating appliance.
CAUTION: This heater creates
warm air currents. These currents
move heat to wall surfaces next
to heater. Installing heater next
to vinyl or cloth wall coverings or
operating heater where impurities
(such as, but not limited to, tobacco smoke, aromatic candles,
cleaning fluids, oil or kerosene
lamps, etc.) in the air exist, may
discolor walls or cause odors.
NOTICE: Installation, service and
repair of this appliance must be
performed by a qualified installer,
service agency, company or
gas supplier experienced with
this type of gas appliance. Only
factory authorized components
listed in these instructions may
be used in accordance with the
manufacturer's instructions and
all codes and requirements of
the authority having jurisdiction.
Any modifications to or use of
unauthorized components or
accessory items will void the
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manufacturer’s warranty and may
result in a hazardous condition.
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INSTALLATION
Continued
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP) for
your unit. If your gas supply is not correct, do not
instal in fireplace. Call dealer where you bought
the appliance for proper type of appliance.
WARNING: This appliance
is equipped for (natural or propane/LP) gas. Field conversion
is not permitted.
INSTALLATION AND CLEARANCES
Figure 2 shows technical information regarding
the installation of your gas log set. Please make
sure all specifications shown are applicable before
installation is attempted.
SPECIFICATIONS (W.C.)
FUEL INLET MANIFOLD
PRESSURE PRESSURE
Min. Max.
NG 7" 10.5" 3.5"
LP 11" 14" 10"
Figure 2 - Technical Information Chart
FLUE OPENING SPECIFICATIONS
Note: This vented appliance must be installed only
in a solid-fuel burning or UL127 factory-built fire
place constructed of noncombustible material and
connected to a working flue. The fireplace chimney
must have a permanent vent opening to outside
with minimum openings shown in Figure 3.
LOG SIZING REQUIREMENTS
MINIMUM FIREBOX SIZE
LOG FRONT REAR* MIN. FLUE
SIZE HEIGHT DEPTH WIDTH WIDTH SIZE
18" 20" 14" 25" 20.5" 6.5"
24" 20" 14" 29" 24.5" 6.5"
*Measured at 14" depth
Figure 3 - Sizes and Clearances
VENTING SPECIFICATIONS FOR
INSTALLATION
The fireplace chimney flue and vent must be drafting properly. To check the vent for proper drafting:
Light a tightly rolled newspaper on one end and
place it at the inside front edge of the fireplace.
Observe the smoke and be sure the vent is properly
drawing it up the chimney. If the smoke spills out
into the room, extinguish the flame and remove any
obstruction until proper venting is achieved.
The chimney flue damper must be fixed open to pro
vide a minimum of 32 square inch of free air opening
at all times during operation of the log set. A damper
clamp is included to secure the damper.
The minimum flue sizes shown in Figure 3 are
based on a 6' chimney height using round pipe. Your
minimum flue size will vary based on input rate and
chimney height. Refer to the National Fuel Gas Code
ANSI Z223.1/NFPA 54, Section 6.6 for details.
INSTALLING DAMPER CLAMP
Secure the damper stop clam to the edge of the
damper as shown in Figure 4. If for any reason
this clamp doesn't work on your fireplace, another
suitable clamp or permanent stop must be installed,
or the damper blade must be cut or removed.
Damper
Clamp
Damper
Masonry
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Fireplace
Figure 4 - Attaching Damper Clamp
Damper
Damper
Clamp
Damper
Manufactured
Fireplace
INSTALLING REMOTE CONTROL
ACCESSORY BRACKET
If installing optional remote control accessory you
will need to install the remote accessory bracket
for the receiver.
Use screws provided to attach bracket to valve
bracket as shown in Figure 5.
Follow installation instructions included with
remote accessory.
Valve Bracket
Remote
Bracket
Figure 5 - Attaching Remote Bracket to
Valve Bracket
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117423-01A
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