Majestic 400BBV Manual

B-Vent Series
Natural Vent Gas Fireplace
Installation & Operating Instructions
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WARNING
IF THE INFORMATION IN THESE INSTRUCTIONS
IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO-
SION MAY RESULT CAUSING PROPERTY DAM-
AGE, PERSONAL INJURY OR LOSS OF LIFE.
— Do not store or use gasoline or other flam-
mable 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 suppli-
er’s instructions.
• If you cannot reach your gas supplier,
call the fire department.
— Installation and service must be performed
by a qualified installer, service agency or
the gas supplier.
WARNING: Improper installation, adjustment,
alteration, services or maintenance can cause
injury or property damage. Refer to this man-
ual. For assistance or additional information
consult a qualified installer, service agency or
the gas supplier.
DUE TO HIGH TEMPERATURES, THE APPLI-
ANCE SHOULD BE LOCATED OUT OF TRAF-
FIC AND AWAY FROM FURNITURE AND DRAP-
ERIES.
CHILDREN AND ADULTS SHOULD BE ALERT-
ED TO THE HAZARDS OF HIGH SURFACE
TEMPERATURE AND SHOULD STAY AWAY TO
AVOID BURNS OR CLOTHING IGNITION.
YOUNG CHILDREN SHOULD BE SUPERVISED
WHEN THEY ARE IN THE SAME ROOM AS THE
APPLIANCE.
CLOTHING OR OTHER FLAMMABLE MATE-
RIAL SHOULD NOT BE PLACED ON OR NEAR
THE APPLIANCE.
KEEP THE ROOM AREA CLEAR AND FREE
FROM COMBUSTIBLE MATERIALS, GASO-
LINE AND OTHER FLAMMABLE VAPORS AND
LIQUIDS.
READ BEFORE INSTALLING. SAVE THESE INSTRUCTIONS
Models:
400BBV, 400SBV, 500SBV
62D4037 10/08 Rev. 10

62D4037
2
TABLE OF CONTENTS
Thank you and congratulations on your purchase of an MHSC Fireplace
Please read the Installation and Operation Instructions before using the appliance!
IMPORTANT: Read all instructions and warnings carefully before starting installation.
Failure to follow these instructions may result in a possible fire hazard and will void the warranty.
Important Safety Information ...........................3
Product Features ...............................................5
Code Approval ...................................................5
Pre-Installation Information
Installing Above 2000 Feet ..............................6
Orifice Sizes, Pressures and BTU’s ................6
Before You Install ............................................6
Fireplace Framing ...........................................7
Fireplace Dimensions .....................................8
Fireplace Location .........................................10
Clearances .......................................................11
Securing Fireplace to Floor or Framing ........12
Installation Information ...................................13
Vent Installation ...............................................14
Installation Precautions .................................14
Installation Planning ......................................14
Outside Combustion Air Precautions and Rec-
ommendations ............................................16
Combustion Air Assembly .............................17
Fireplace Installation .......................................18
Check Gas Type ............................................18
Installing Gas Piping to Fireplace/Burner Sys-
tem Location .................................................18
Checking Gas Pressure ..................................20
Electrical Installation ......................................21
Electrical Wiring ............................................21
Remote Wall Mounted Switch .......................21
Electronic Pilot Ignition Wiring ......................22
Final Installation ..............................................23
Rock Wool Placement ...................................23
Log Placement .............................................23
Lava Rock and Ember Placement ................23
Operating Instructions ....................................24
What To Do If You Smell Gas ........................24
Lighting Pilot for the First Time .....................24
Lighting Pilot .................................................25
Lighting Burner ..............................................26
Lighting Electronic IGN .................................27
To Turn Off Gas .............................................27
Cleaning and Maintenance .............................28
Burner, Pilot and Control Compartment ........28
Pilot Flame ....................................................28
Burner ...........................................................28
Burner Flame ................................................28
Vent System ..................................................29
Logs ..............................................................29
Rock Wool .....................................................29
Replacement Parts ..........................................30
Firebox Components .....................................30
Logs ..............................................................31
Standing Pilot - Millivolt Control ....................32
Electronic Ignition ..........................................33
Troubleshooting ..............................................36
Warranty ...........................................................43

62D4037 3
IMPORTANT SAFETY INFORMATION
INSTALLER
Please leave these instructions with the appliance.
OWNER
Please retain these instructions for future reference.
WARNING
• Read this owner’s manual carefully and completely before trying to assemble,
operate, or service this fireplace.
• Any change to this fireplace or its controls can be dangerous.
• Improper installation or use of this fireplace can cause serious injury or death
from fire, burns, explosions, electrical shock and carbon monoxide poisoning.
This fireplace is a decorative gas appliance. This fire-
place must be properly installed by a qualified service
person.
CARBON MONOXIDE POISONING: Early signs of
carbon monoxide poisoning are similar to the flue with
headaches, dizziness and/or nausea. If you have these
signs, the fireplace may not have been installed properly.
Get fresh air at once! Have the fireplace inspected and
serviced by a qualified service person. Some people are
more affected by carbon monoxide than others. These
include pregnant women, people with heart or lung dis-
ease or anemia, those under the influence of alcohol,
and those at high altitudes.
Propane/LP gas and natural gas are both odorless. An
odor-making agent is added to each of these gases. The
odor helps you detect a gas leak. However, the odor
added to these gases 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 fireplace.
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 unless a certi-
fied kit is used.
2. For propane/LP fireplace, do not place propane/LP
supply tank(s) inside any structure. Locate propane/
LP supply tank(s) outdoors. To prevent performance
problems, do not use propane/LP fuel tank of less
than 100 lbs. capacity.
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 neigh-
bor’s phone. Follow the gas supplier’s instruc-
tions.
4. Never install the fireplace:
• in a recreational vehicle
• where curtains, furniture, clothing, or other flam-
mable objects are less than 42” from the front,
top or sides of the fireplace
• in high traffic areas
• in windy or drafty areas
5. This fireplace reaches high temperatures. Keep
children and adults away form hot surfaces to avoid
burns or clothing ignition. Fireplace will remain hot
for a time after shutdown. Allow surfaces to cool be-
fore touching.
6. Carefully supervise young children when they are in
the room with fireplace.
7. Do not modify fireplace under any circumstances.
Any parts removed for servicing must be replaced
prior to operating fireplace.
8. Turn fireplace off and allow to cool before servic-
ing, installing or repairing. Only a qualified service
person should install, service or repair the fireplace.
Have burner system inspected annually by a quali-
fied service person.
9. You must keep control compartments, burners and
circulating air passages clean. More frequent clean-
ing may be needed due to excessive lint and dust
form carpeting, bedding material, pet hair, etc. turn
off the gas valve and pilot light before cleaning fire-
place.
10. Have venting system inspected annually by a quali-
fied service person. If needed, have venting system
cleaned or repaired. Refer to Cleaning and Mainte-
nance, Page 32.
11. Keep the area around your fireplace clear of com-
bustible materials, gasoline and other flammable va-
por and liquids. Do not run fireplace where these are
used or stored. Do not place items such as clothing
or decorations on or around fireplace.
12. Do not use this fireplace to cook food or burn paper
or other objects.
13. Never place anything on top of fireplace.
Continued on Page 4

62D4037
4
14. Do not use any solid fuels (wood, coal, paper, card-
board, etc.) in this fireplace. Use only the gas type
indicated on rating plate.
15. This appliance, when installed, must be electrically
grounded in accordance with local codes or in the
absence of local codes, with the National Electri-
cal Code, ANSI/NFPA 70 or the Canadian Electrical
Code, CSA C22.1.
16. Do not obstruct the flow of combustion and venti-
lation air in any way. Provide adequate clearances
around air openings into the combustion chamber
along with adequate accessibility clearance for ser-
vicing and proper operation.
17. When the appliance is installed directly on carpeting,
tile or other combustible material other than wood
flooring, you must set appliance on a metal or wood
panel or hearth pad extending the full width and
depth of the appliance.
IMPORTANT SAFETY INFORMATION
18. Do not use fireplace if any part has been exposed to
or has been under water. Immediately call a quali-
fied service person to arrange for replacement of the
unit.
19. Do not operate fireplace if any log is broken.
20. Do not use a blower fireplace, heat exchanger fire-
place or any other accessory not approved for use
with this fireplace.
21. The fireplace is not intended for use with a thermo-
stat.
22. This appliance must be installed with draft hood in
same atmospheric pressure zone as the combustion
air inlet to the appliance.
23. For Massachusetts Residents Only: This product
must be installed by a licensed plumber or gas fitter
when installed within the Commonwealth of Massa-
chusetts. Flexline installation must not exceed 36”.
Continued on Page 4
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
It is normal for fireplaces fabricated of steel to give off
some expansion and/or contraction noises during the
start up or cool down cycle. Similar noises are found
with your furnace heat exchanger or car engine.
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
It is not unusual for gas fireplace to give off some odor
the first time it is burned. This is due to the manufactur-
ing process.
Please ensure that your room is well ventilated
during burn off - open all windows.
It is recommended that you burn your fireplace for at
least en (10) hours the first time you use it.
Never connect unit to private
(non-utility) gas wells. This gas is
commonly known as wellhead gas.
WARNING
WARNING
Proposition 65 Warning: Fuels listed in gas, wood burning or oil fired appliances, and the products
of combustion of such fuels, contain chemicals known to the State of California to cause cancer,
birth defects and other reproductive harm.
California Health and Safety Code Sec. 25249.6

62D4037 5
PRODUCT FEATURES and CODE APPROVAL
PRODUCT SPECIFICATIONS
• This appliance has been certified for use with either natural or propane gas. See appropriate data plates.
• This appliance is not for use with solid fuels.
• The appliance must be installed in accordance with local codes if any. If none exist use the current installation
code, ANSI Z223.1/NFPA 54 in the US and CSA B149 in Canada.
• The appliance must be properly connected to a venting system.
• The appliance is not approved for closet or recessed installations.
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Gas Control
(not shown)
1/2” Nailing Flange
5/8” Nailing Flange
1/2” Nailing Flange
CODE APPROVAL
These appliances have been tested by CSA and found to comply with the established standards for VENTED GAS
FIREPACES in the US and Canada as follows:
LISTED VENTED GAS FIREPLACE
TESTED TO: ANSI Z21.50a-2008 CSA2.22a-2008
Figure 1
BBV/SBV Fireplace

62D4037
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PRE-INSTALLATION INFORMATION
HIGH ELEVATIONS
Input ratings are shown in BTU per hour and are certified without deration for elevations up to
4,500 feet (1,370 m) above sea level.
For elevations above 4,500 feet (1,370 m) in USA, installation must be in accordance with the cur-
rent ANSI Z223.1/NFPA 54 and/or local codes having jurisdiction.
In Canada, please consult provincial and/or local authorities having jurisdiciton for installation at
elevations above 4,500 feet (1,370 m).
ORIFICE SIZES, PRESSURES AND BTUs
NATURAL GAS PROPANE GAS
Manifold Press: (w.c.) 3.5” Manifold Press: (w.c.) 10”
Maximum Supply Pressure 10.5” Maximum Supply Pressure 13”
Minimum Supply Pressure 4.5” Minimum Supply Pressure 11”
Model Number 400BBV 400SBV 500SBV
Natural Propane Natural Propane Natural Propane
Max. BTU/hr Input 22,000 22,000 29,000 29,000 31,500 31,500
Min. BTU/hr Input 16,000 14,500 16,500 16,300 19,000 20,000
Burner Orifice size (as shipped) #43 #55 #41 #53 #37 #52
BEFORE YOU START
Read this homeowner manual thoroughly and follow all instructions carefully. Inspect all contents
for shipping damage and immediately inform your dealer if any damage is found. Do not install any
unit with damaged, incomplete, or substitute parts. Check your packing list to verify that all listed
parts have been received. You should have the following:
• Fireplace (Firebox and Burner System) • Plastic Bag (1) • Ziplock Bag 2” x 3” x 3”
• White Toggle Switch • Volcanic Rock • Rock Wool
• Log Set • Switch Cover Plate
ITEMS REQUIRED FOR INSTALLATION
Tools: Building Supplies:
• Phillips screwdriver • Framing materials
• Hammer • Wall finishing materials
• Saw and/or saber saw • Caulking material (noncombustible)
• Level • Fireplace surround material (noncombustible)
• Measuring tape • Piping complying with Local Codes
• Electric drill and bits • Tee joint
• Pliers • Pipe sealant approved for use with Propane/LP gas
• Square (resistant to sulfur compounds)
• Pipe Wrench

62D4037 7
FIREPLACE FRAMING
Firebox framing can be built before or after the appliance is set in place. Construct firebox framing fol-
lowing Figure 2 and the chart below for your specific installation requirements. Refer to Page 8, Figure
3 for firebox dimensions. The framing headers may rest on the top of the firebox standoffs.
The firebox may be installed directly on a combustible floor or raised on a platform of an appropriate
height. When the firebox is installed directly on carpeting, tile or other combustible material, other than
wood flooring, the firebox shall be installed on a metal or wood panel extending the full width and depth
of the enclosure.
PRE-INSTALLATION INFORMATION
Do not fill spaces around firebox with
insulation or other materials. This
could cause a fire.
WARNING
B
A
H
G
D
F
E
A
C
1/2" or 5/8"
C
A
G
C
G
A
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Corner Installation
Inside Chase Installation
Stud Location
Recessed Installation
Figure 2 -
Framing Dimensions
400BBV 400SBV 500SBV
A 40¹⁄₂” 40¹⁄₂” 46¹⁄₂”
B 40¹⁄₄” 40¹⁄₄” 40¹⁄₄”
C 31³⁄₈” 24¹³⁄₁₆” 30¹³⁄₁₆”
D 16¹⁄₈” 13¹⁄₂” 16¹⁄₂”
E 61¹⁄₄” 67⁷⁄₈” 73⁷⁄₈”
F 30⁵⁄₈” 34” 37”
G 14¹⁄₂” 21¹⁄₂” 21¹⁄₂”
H 43³⁄₈” 48” 52¹⁄₄”

62D4037
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PRE-INSTALLATION INFORMATION
FIREPLACE DIMENSIONS
400BBV
31”
14”
Framing
Dimension
14”
1/2” or 5/8”
Drywall Spacers
1/2” or 5/8”
Drywall Spacers
8”
9”
Air Kit
16”
7”
Electrical/Gas
Access
2”
40”
40”
Framing
Dimension
21”
34”
6”
B
C
D
Framing Dimension
624037
400 BBV dims
10/08
4”
B-Vent
Center Line
Top View
Side View
Front View
Figure 3 -
400BBV Dimensions

62D4037 9
PRE-INSTALLATION INFORMATION
FIREPLACE DIMENSIONS
400SBV and 500SBV
For easier installation on SBV400 and
SBV500 units, place gas supply pipe
6” to 8” inside unit. Measure from the
center of the gas knock-out hole lo-
cated at the bottom of the left side.
NOTE
400SBV 500SBV
A 24¹³⁄₁₆” 30¹³⁄₁₆”
B 36” 42”
C 40” 46”
D 40¹⁄₂” 46¹⁄₂”
A
21”
Framing
Dimension
21”
13”
6”
1/2” or 5/8”
Drywall Spacers
1/2” or 5/8”
Drywall
Spacers
9”
Air Kit
16”
14”
Electrical/Gas
Access
2”
34”
6“
B
C
D
Framing Dimension
21”
40”
40”
Framing
Dimension
624037
SBV dims
10/08
6”
B-Vent
Top View
Side View
Front View
Figure 4 -
400SBV and 500SBV Dimensions

62D4037
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PRE-INSTALLATION INFORMATION
FIREPLACE LOCATION
Plan for the installation of your appliance. This includes determining where the unit is to be installed,
the vent configuration to be used, framing and finishing details, and whether any optional acces-
sories (i.e. wall switch, or remote control) are desired. Consult your local building code agency to
ensure compliance with local codes, including permits and inspections.
The following factors should be taken into consideration:
• Clearance to side-wall, ceiling, woodwork and windows. Minimum clearances to combustibles
must be maintained.
• This fireplace may be installed along a wall, across a corner or use an exterior chase.
• Location should be out of high traffic areas and away form furniture and draperies due to heat
from appliance.
• Never obstruct the front opening of the fireplace.
• Do not install in the vicinity where gasoline or other flammable liquids may be stored.
• Vent pipe routing. Refer to Venting section found in this manual for allowable venting configura-
tions.
• These units can be installed in a bedroom. Refer to the National Fuel Gas Code ANSI Z233.1/
NFPA 54 - (current edition), the Uniform Mechanical Code - (current edition), and Local Building
Codes for specific installation requirements.