MHSC BVSTNSC Manual

B-Vent Specialty Series
Natural Vent Gas Fireplaces
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 am-
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 re department.
— Installation and service must be performed
by a qualied 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 qualied 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.
Models:
BVSTNSC, BVPNSC
20301938 9/11 Rev. 2

BVENTSPECCOVER
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future refer-
ence.
Installation & Operating
Instructions

20301938
2
B-Vent Specialty Gas Fireplaces 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 re hazard and will void the warranty.
Important Safety Information ......................................3
Code Approval ..............................................................4
Product Features ..........................................................5
High Elevations ........................................................5
Gas Pressures .........................................................5
Gas Specications & Orice Size ............................5
Before You Start .......................................................5
Fireplace & Framing Dimensions .............................6
Fireplace Framing ....................................................6
Clearances ....................................................................7
Venting Installation .......................................................8
Installation Precautions ............................................8
Installation Planning .................................................8
Firestop Installation ..................................................8
Vertical Termination ..................................................9
Outside Combustion Air .........................................11
Fireplace Installation ..................................................12
Check Gas Type.....................................................12
Gas Line Installation ..............................................13
Electrical Wiring .....................................................14
Signature Command System.....................................15
Check Gas Type.....................................................15
Electrical Wiring .....................................................15
Junction Box Wiring ...............................................16
Command Center Wall Installation .........................16
Wall Switch Installation ..........................................16
SCS Wiring Diagram ..............................................17
Log Installation ...........................................................18
Ember Material Placement .....................................18
Log Placement ......................................................18
Lava Rock and Ember Placement .........................18
Operating Instructions ...............................................19
What To Do If You Smell Gas .................................19
Operating Instructions ............................................20
To Turn Off Gas ......................................................20
Signature Command System
Operating Instructions ............................................21
Adjustment, Cleaning and Maintenance ..................24
Venturi Adjustment .................................................24
Cleaning and Maintenance ....................................24
Safety Checklist .....................................................25
Troubleshooting .........................................................26
Replacement Parts .....................................................28
Firebox & Logs .......................................................28
Signature Command System .................................29
Accessories ................................................................30
Warranty ......................................................................31

20301938 3
B-Vent Specialty Gas Fireplaces
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 replace.
• Any change to this replace or its controls can be dangerous.
• Improper installation or use of this replace can cause serious injury or death
from re, burns, explosions, electrical shock and carbon monoxide poisoning.
This replace is a decorative gas appliance. This replace
must be properly installed by a qualied service person.
CARBON MONOXIDE POISONING: Early signs of car-
bon monoxide poisoning are similar to the u with head-
aches, dizziness and/or nausea. If you have these signs,
the replace may not have been installed properly. Get
fresh air at once! Have the replace inspected and ser-
viced by a qualied 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 inuence 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 add-
ed 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 replace.
1. This appliance is only for use with the type of gas in-
dicated on the rating plate. This appliance is not con-
vertible for use with other gases unless a certied kit
is used.
2. For propane/LP replace, 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 replace:
• in a recreational vehicle
• where curtains, furniture, clothing, or other am-
mable objects are less than 42” from the front, top
or sides of the replace
• in high trafc areas
• in windy or drafty areas
5. This replace reaches high temperatures. Keep chil-
dren 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 before
touching.
6. Young children should be carefully supervised when
they are in the same room as the appliance. Toddlers,
young children and others may be susceptible to ac-
cidental contact burns. A physical barrier is recom-
mended if there are at risk individuals in the house.
To restrict access to a replace or stove, install an ad-
justable safety gate to keep toddlers, young children
and other at risk individuals out of the room and away
from hot surfaces.
7. Do not modify replace under any circumstances. Any
parts removed for servicing must be replaced prior to
operating replace.
8. Turn replace off and allow to cool before servicing,
installing or repairing. Only a qualied service person
should install, service or repair the replace. Have
burner system inspected annually by a qualied ser-
vice 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 re-
place.
10. Have venting system inspected annually by a quali-
ed service person. If needed, have venting system
cleaned or repaired. Refer to Cleaning and Mainte-
nance, Page 25.
11. Keep the area around your replace clear of combus-
tible materials, gasoline and other ammable vapor
and liquids. Do not run replace where these are
used or stored. Do not place items such as clothing
or decorations on or around replace.
12. Do not use this replace to cook food or burn paper or
other objects.
13. Never place anything on top of replace.

20301938
4
B-Vent Specialty Gas Fireplaces
14. Do not use any solid fuels (wood, coal, paper, card-
board, etc.) in this replace. 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 ow of combustion and ventilation
air in any way. Provide adequate clearances around
air openings into the combustion chamber along with
adequate accessibility clearance for servicing and
proper operation.
17. When the appliance is installed directly on carpeting,
tile or other combustible material other than wood
ooring, you must set appliance on a metal or wood
panel or hearth pad extending the full width and depth
of the appliance.
18. Do not use replace if any part has been exposed to
or has been under water. Immediately call a quali-
ed service person to arrange for replacement of the
unit.
19. Do not operate replace if any log is broken.
20. Do not use a blower replace, heat exchanger re-
place or any other accessory not approved for use
with this replace.
21. The replace 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 tter
when installed within the Commonwealth of Massa-
chusetts. Flexline installation must not exceed 36”.
IMPORTANT SAFETY INFORMATION
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
It is normal for replaces 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 replace to give off some odor
the rst time it is burned. This is due to the manufactur-
ing process.
Please ensure that your room is well ventilated dur-
ing burn off - open all windows.
It is recommended that you burn your replace for at
least en (10) hours the rst time you use it.
Never connect unit to private
(non-utility) gas wells. This gas is
commonly known as wellhead gas.
WARNING
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 Z21.50b-2009 / CSA2.22b-2009
WARNING
!
HOT GLASS WILL
CAUSE BURNS.
DO NOT TOUCH GLASS
UNTIL COOLED.
NEVER ALLOW CHILDREN
TO TOUCH GLASS.
Proposition 65 Warning: Fuels listed in gas,
wood burning or oil red appliances, and the
products of combustion of such fuels, contain
chemicals known to the State of California to
cause cancer, birth defects and other repro-
ductive harm.
California Health and Safety Code Sec. 25249.6
WARNING

20301938 5
B-Vent Specialty Gas Fireplaces
PRODUCT FEATURES
PRODUCT SPECIFICATIONS
• This appliance has been certied 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 instal-
lation code, ANSI Z223.1/NFPA 54 in the US and
CSA B149 in Canada.
• The appliance must be properly connected to a vent-
ing system.
• The appliance is not approved for closet or recessed
installations.
HIGH ELEVATIONS
Input ratings are shown in BTU per hour and are cer-
tied 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, in-
stallation must be in accordance with the current ANSI
Z223.1/NFPA 54 and/or local codes having jurisdic-
tion.
In Canada, please consult provincial and/or local au-
thorities having jurisdiciton for installation at elevations
above 4,500 feet (1,370 m).
GAS PRESSURES
Natural
Inlet Minimum 4.5” w.c.
Inlet Maximum 7.0” w.c.
Manifold Pressure 3.5” w.c.
GAS SPECIFICATIONS & ORIFICE SIZE
Min. Input Max.Input Orice
Model Fuel BTU/h BTU/h Size
BVSTNSC Nat. 29,000 42,000 #29 (.136”)
BVPNSC Nat. 29,000 42,000 #29 (.136”)
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 dam-
age is found. Do not install any unit with damaged, incom-
plete, 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)
• Log Set • Volcanic Rock
• Rock Wool • White Toggle Switch
• Switch Cover Plate • Plastic Bag (1)
• Ziplock Bag 2” x 3” x 3”
ITEMS REQUIRED FOR INSTALLATION
• Phillips Screwdriver • Framing Materials
• Hammer • Wall Finishing Materials
• Saw and/or saber saw • Level
• Electric Drill and Bits • Tee Joint
• Pliers • Measuring Tape
• Square • Pipe Wrench
• Caulking Material (Noncombustible)
• Fireplace Surround Material (Noncombustible)
• Piping Complying with Local Codes
• Pipe Sealant Approved for use with Propane/LPG
(Resistant to Sulfur Compounds)

20301938
6
B-Vent Specialty Gas Fireplaces FIREPLACE & FRAMING DIMENSIONS
Figure 1 -
Fireplace & Framing Dimensions
2356”
6" B-Vent flue
4” O.A. Inlet
3756M”
756O”
2256M”
36”
38”
3856O” Rough Opening
Width - Peninsula
39” Rough Opening
Width - See-thru
4056M”
756O”
1" 1"
4256O”
426”
2256”
2456”
19”
126M”
1938
BVST dims
3556QE”136QE”
Gas Line
Access
Gas Line
Access
Rough
Opening
Height
Rough
Opening
Depth
FIREPLACE FRAMING
It is best to frame your replace after it is positioned and
the vent system installed. Use 2 x 4’s and frame to local
building codes.
To install the replace facing ush with the nished wall,
position the framework to accommodate the thickness of
the nished wall.
It is not necessary to install a hearth extension with this
replace system.
The junction box should be wired to the electrical system
at the time of installation of the replace. Wiring must be
performed by a qualied person in a manner to conform
with National Electrical Code ANSI/NFPA 70 and all ap-
plicable local codes.
Do not ll spaces around rebox with in-
sulation or other materials. This could
cause a re.
WARNING
Always check and make sure power is OFF
before attempting to install or service any
electrical wiring or components.
CAUTION

20301938 7
B-Vent Specialty Gas Fireplaces
CLEARANCES
CLEARANCE TO COMBUSTIBLES
Sides .......................................................... 1/2”
Back ........................................................... 1/2”
Top ................................................................ 0”
Front ............................................................ 37”
Bottom ........................................................... 0”
When the replace is installed directly on carpeting, vinyl
tile or other combustible materials (other than wood oor-
ing), it shall be installed on a metal or wood panel extend-
ing the full width and depth of the replace.
Provide adequate ventilation air.
Provide adequate accessibility clearance for servicing
and operating the replace.
Never obstruct the front opening of the replace.
856O”
12” 9” 256M”
FP2754
mantel clearance
Combustible Mantel
and Trim Allowed
Above Dotted Line
Measure from
Top of Opening
Front of Fireplace
FP2754
Figure 2 -
Mantel Clearances
MANTEL CLEARANCES
1"
256O”
3"
4"
156O”
256O”
45°
FP2582
mantel side clearance
Combustible
Material Area
Wall
Side of Fireplace
Opening
Top View
FP2582

20301938
8
B-Vent Specialty Gas Fireplaces VENTING INSTALLATION
WARNING
Read all instructions completely and thoroughly before attempting installation.
Failure to do so could result in serious injury, property damage or loss of life.
Operation of improperly installed and maintained venting system could result in
serious injury, property damage or loss of life.
NOTICE
Failure to follow these instructions will
void the warranty.
INSTALLATION PRECAUTIONS
Consult local building codes before beginning the instal-
lation. The installer must make sure to select the proper
vent system for installation. Before installing vent kit, the
installer must read this replace manual and vent kit in-
structions.
Only a qualied installer/service person should install
venting system. The installer must follow these safety
rules:
• Wear gloves and safety glasses for protection.
• Use extreme caution when using ladders or when
on rooftops.
• Be aware of electrical wiring locations in walls and
ceilings.
The following actions will void the warranty on your vent-
ing system:
• Installation of any damaged venting component.
• Unauthorized modication of the venting system.
• Installation of any component part not manufac-
tured or approved by MHSC.
• Installation other than permitted by these instruc-
tions.
INSTALLATION PLANNING
“B” VENT PIPE
See venting installation instructions provided by the B-
Vent manufacturer.
NOTE: This APPLIANCE MUST BE INSTALLED using
“B” vent type pipe that has been listed by a nationally
recognized testing agency.
Refer to B-Vent Pipe Sizing chart for proper elbow offset
runs.
This appliance must be installed using 6” type “B” vent.
Locate chimney center line dimension from a combus-
tible back wall. Page 6, Figure 1
• Minimum vertical chimney height - 7’
• Minimum height with two (2) 90° elbows - 6’
• Elbow requirements allow a maximum of two (2)
90° elbows or four (4) 45° elbows per installation.
NOTE: Two (2) 45° elbows = one (1) 90° elbow
• Horizontal run must never exceed 50% of the
height of the vent system.
FIRESTOP INSTALLATION
A ceiling restop must be installed if the vent passes
through a ceiling. Refer to the instructions from the pipe
manufacturer. To position restop refer to Figures 3 and 4.
Only one (1) restop required per frame.
NOTE: A restop is not required at the roof.
FP2020
firestop
10/08
Nails
Firestop
Spacer
Joist
FP2020
Figure 3 -
Install Firestop in Attic
LOCATE and INSTALL FIRESTOP
1. For ceiling restops, position a plumb bob over the
center of the vertical pipe to spot a hole through which
the pipe will penetrate.
2. Drill a hole through this center point and check for ob-
structions (i.e. wiring or plumbing).
3. Reposition the replace and vent system, if necessary,
to accommodate ceiling joists or obstructions.
4. Cut an 11” x 11” hole through the ceiling, using the
center point.

20301938 9
B-Vent Specialty Gas Fireplaces
VENTING INSTALLATION
When installing in a chase, you should insu-
late the chase as you would the outside walls
of your home. This is especially important in
cold climates. Insulation should be considered
a combustible material. Maintain proper clear-
ances to all combustible materials.
NOTICE
Treatment of restops and construction of the
chase may vary from buiding type to building
type. These instructions are not substitutes for
the requirements of local building codes. You
must follow all local building codes.
Nails
Firestop Spacer
Joist
Figure 4 -
Install Firestop in Ceiling
FP2020
firestop
10/08
5. Frame the hole with framing lumber the same size as
the ceiling joists. Position restop. If attic is above,
mount restop on top of framing. Figure 3. If room is
above, mount restop on the bottom of framing. Figure
4. Secure with nails or screws.
6. Run vent through restop.
NOTICE
VERTICAL TERMINATION
Major building codes specify a minimum vent height
above the rooftop depending on the pitch of the roof. Re-
fer to Figure 5 for minimum heights, provided the termina-
tion cap is at least 8’ from a vertical wall and 2’ below a
horizontal overhang. Trees, buildings, adjoining roof lines
and adverse wind conditions may require taller chimneys
than what is shown.
FP1022
Typical Straight Up Installation
1/26/00 djt
H X
12
Listed Vertical
Termination
Cap
Listed Gas Vent
Lowest Discharge
Opening
Roof Pitch is x/12
H (Min) - Minimum
Height from Roof to Low-
est Discharge Opening
FP1022
NOTE: Vertical termination must be
at least 8’ from vertical wall.
Roof Pitch H Min. (ft)
Flat to 6/12 1’
6/12 to 7/12 1’3”
Over 7/12 to 8/12 1’6”
Over 8/12 to 9/12 2’
Over 9/12 to 10/12 2’6”
Over 10/12 to 11/12 3’3”
Over 11/12 to 12/12 4’
Over 12/12 to 14/12 5’
Over 14/12 to 16/12 6’
Over 16/12 to 18/12 7’
Over 18/12 to 20/12 7’6”
Over 20/12 to 21/12 8’
Figure 5 -
Minimum Vent Height for Various Roof Pitches
1. Locate and mark the vent center point on the underside
of the roof, and drive a nail trough the center joint.
2. The size of the roof hole framing dimensions depends
on the pitch of the roof.
3. Cut and frame the roof hole.
4. Continue to install vent sections through the roof hole
until reaching the appropriate distance above the
roof.
5. Attach a ashing to the roof using nails, and use a
non-hardening mastic around the edges of the ash-
ing base when it meets the roof.
6. Attach a storm collar over the ashing joint to form a
watertight seal. Place non-hardening mastic around
the joint, between the storm collar and the vertical
pipe.
7. Attach termination per pipe manufacturer’s instruc-
tions.
LOCATE AND INSTALL VERTICAL TERMI-
NATION
NOTE: When working on the foor, cover the opening of
the installed vent pipe below to prevent debris falling in.

20301938
10
B-Vent Specialty Gas Fireplaces VENTING INSTALLATION
7’
Min.
FP2207
straight up install
Storm Collar
Flashing
6” Type “B”
Gas Vent
Listed
Ceiling
Support
Minimum Clearance
as Specied by Vent
Manufacturer
“B” Vent Clearance
as Specied by Vent
Manufacturer
Wall
Gas Appliance
Floor
FP2207
Figure 6
&0
TRANSITIONPIPE
Attach 6” “B” Vent Pipe
to Transition using Four
(4) Sheet Metal Screws
Attach Transition to
Flue Collar using
Three (3) Sheet Metal
Screws
Units Flue Collar
FP2208
Figure 7
6‘ Min.
4’ Max
FP2009a
vent w elbows
Approved
Termination
Support
As Specied
by Vent Manu-
facturer
6” Type “B” Gas
Vent Chimney
Wall
Gas Appliance
Floor
Approved Thimble for
6” Type “B” Gas vent
Through Wall
FP2209
Figure 8
Peninsula and See-Thru
Models Only
NOTE: This installation is NOT
recommended for colder climates.
Check local codes for allowances.

20301938 11
B-Vent Specialty Gas Fireplaces
NOTE: The use of outside air for combustion is op-
tional unless required by building codes. It is only
necessary to supply outside combustion air to one
side of replace. Use model 6AK combustion air kit
(refer to Page 17).
1. Avoid extremely long runs and numerous turns in duct
leading from replace to combustion air assembly.
These conditions increase the resistance to free ow
of air through duct. Figures 9 and 10
2. Locate combustion air assembly at an exterior loca-
tion. Make sure the location cannot be accidentally
blocked. Locate assembly above snow line to prevent
snow from blocking assembly.
3. Never mount combustion air inlet assembly in garage
or storage area where combustible fumes (gasoline)
might be drawn into replace.
4. Combustion air may be drawn from crawl space un-
der house when adequate supply of air is provided by
open ventilation. Figure 9
NOTE: Never take combustion air from attic space or
garage space.
NOTE: Install outside combustion air ONLY ON LEFT-
HAND SIDE of replace.
OUTSIDE COMBUSTION AIR PRECAUTIONS and RECOMMENDATIONS
FP2210a
outside air
Duct Extended
to Miss Joist
FP2210a
Figure 9
Installed above Basement or
Crawl Space
FP2210a
outside air
Inlet Grille
in Soft
(Overhang)
8”
Maximum
Figure 10
Installed on Concrete Slab

20301938
12
B-Vent Specialty Gas Fireplaces GAS LINE INSTALLATION
CHECK GAS TYPE
Use proper gas type for the replace you are installing. If you have conicting gas types, do not
install replace. See dealer where you purchased the replace for proper replace for your gas
type.
INSTALLING GAS PIPING TO FIREPLACE LOCATION
INSTALLATION ITEMS NEEDED
Before installing, make sure you have the items listed below:
• External regulator (supplied by installer) • Tee Joint
• Piping (check local codes) • Pipe wrench
• Sealant (resistant to propane/LP gas)
• Test gauge connection*
• Sediment trap (optional but recommended)
• Approved exible gas line with gas connector (if allowed by
local codes - not provided)
*A CSA design-certied equipment shutoff valve with 1/8”
NPT tap is an acceptable alternative to test gauge connec-
tion. Purchase the CSA design-certied equipment shutoff
valve from your dealer.
For propane/LP connections only, 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 13 inches of water. If you do not reduce incoming gas pressure, burner system regulator
damage could occur. Install external regulator with the vent pointing down as shown in Figure 11.
Pointing the vent down protects it from freezing rain or sleet.
WARNING
A qualied installer or service person
must connect appliance to gas supply.
Follow all local codes.
Use only new black iron or steel pipe. Inter-
nally tinned copper or copper tubing can
be used per National Fuel Code, section
2.6.3, providing gas meets hydrogen sul-
de limits, and where permitted by local
codes. Gas piping system must be sized
to provide minimum inlet pressure (listed
on data plate) at the maximum ow rate
(BTU/hr). Undue pressure loss will occur
if the pipe is too small.
External regulators may be necessary for
natural gas. One- or two-pound systems
will damage this appliance and may cause
re hazard.
&0
EXTERNALREGULATOR
External
Regulator
100 gal.
(min)
Propane/
LP Supply
Tank
Vent
Pointing
Down
FP1977
Figure 11 -
External Regulator with Vent Pointing Down
(Propane/LP Only)
When using copper or ex connectors use only ttings approved for gas connections. The
gas control inlet is 3/8” NPT.
For propane/LP units, never connect
replace directly to the propane/LP
supply. This burner system requires an
external regulator (not supplied). Install
the external regulator between the burn-
er system and propane/LP supply.
CAUTIONCAUTIONWARNING

20301938 13
B-Vent Specialty Gas Fireplaces
GAS LINE INSTALLATION
WARNING
Only persons licensed to work with gas
piping may make the necessary gas
connections to this appliance.
CAUTION
A manual shut-off valve must be installed
upstream of the appliance. Union tee and
plugged 1/8” NPT pressure tapping point
should be installed upstream of the ap-
pliance. Figure 12
To accommodate the various congurations, access openings in the bottom of the unit are provided for
gas line and wall switch wires. This may not be convenient for some installation, if so you may drill an
access opening into the lower face of the unit (1” for gas line, 1/2” for the grommet).
NOTE: The gas line connection may be made using 1/2” rigid tubing or an approved ex con-
nector. Since some municipalities have additional local codes, it is always best to consult your
local authorities and the current edition of the National Fuel Gas Code ANSI Z223.1/NFPA 54. In
Canada CSA-B149 (1 or 2) Installation Code.
A listed manual shut-off valve must be installed upstream of the appliance. Union tee and plugged 1/8”
NPT pressure tapping point should be installed upstream of
the appliance. Figure 5
IMPORTANT: Install main gas valve (equipment shut-off
valve) in an accessible locations. The main gas valve is for
turning on or shutting off the gas to the replace.
Check your building codes for any special requirements for
locating equipment shut-off valve to replaces.
Apply pipe joint sealant lightly to male threads. This will prevent excess sealant form going into pipe.
Excess sealant in pipe could result in clogged burner system valves.
We recommend that you install a sediment trap/drip leg in supply line as shown in Figure 12. Locate
sediment trap/drip leg where it is within reach for cleaning. Install in piping system between fuel sup-
ply and burner system. Locate sediment trap/drip leg where trapped matter is not likely to freeze. A
sediment trap traps moisture and contaminants. This keeps them from going into the burner system
gas controls. If sediment trap/drip leg is not installed or is installed wrong, burner system may not run
properly.
CAUTION
Use pipe joint sealant that is resistant to
liquid petroleum (LP) gas.
Natural Gas
From Gas Meter
(4.5” w.c. to 7” w.c. Pressure)
Propane/LP
From External Regulator
(11” w.c. to 13” w.c. Pressure)
FP1978
&0
GASLINECONNECTION
Flexible Connector
Adapter Fitting Shut-Off Valve
Black Iron Pipe
FP2205
Figure 12

20301938
14
B-Vent Specialty Gas Fireplaces ELECTRICAL INSTALLATION
WARNING
Electrical connections should only be performed by a qualied, licensed
electrician. Main power must be off when connecting to main electrical
power supply or performing service. All wiring shall be in compliance
with all local, city and state codes. The appliance, when installed, just be
electrically grounded in accordance with local codes, or in the absence
of local codes, with the National Electrical Code ANSI/NFPA 70 (latest edi-
tion) and Canadian Electrical Code, CSA C22.1.
CAUTION
Label all wires before disconnecting
when servicing controls. Wiring errors
can cause improper and dangerous op-
eration.
ELECTRICAL WIRING

20301938 15
B-Vent Specialty Gas Fireplaces
SIGNATURE COMMAND - CHECK GAS PRESSURE and ELECTRICAL INSTALLATION
1. Check gas type. The gas supply must be the same as
stated on the appliance’s rating decal. If the gas supply
is different from the replace, STOP! Do not install the
appliance. Contact your dealer immediately.
2. To ease installation, a 24" (610 mm) ex line with
manual shut-off valve has been provided with this ap-
pliance. Install and attach 1/2" gas line onto shut-off
valve.
3. After completing gas line connection, purge air from
gas line and test all gas joints from the gas meter to
the replace for leaks. Use a solution of 50/50 water
and soap solution or a gas sniffer.
4. To check gas pressures at valve, turn captured screw
counter clockwise 2 or 3 turns and then place tubing
to pressure gauge over test point. Turn unit to high.
Figure 13. After taking pressure reading, be sure and
turn captured screw clockwise rmly to reseal. Do not
over torque. Check test points for gas leaks.
Figure 13 -
Signature Command Valve
Pressure Inlet
Pilot Adjust-
ment Screw
Pressure Outlet
WARNING
Do not use open ame to check for gas
leaks.
ELECTRICAL WIRING
General
1. This replace is equipped with the Signature Control
valve which operates on 6 volts. The 6 volt DC adapter
plugs into the replace junction box A/C power supply.
Four (4) “AA” batteries are used for back up during
power outages.
2. The Signature Command System can also be operated
without A/C power. The system can run on four (4) “AA”
batteries for approximately six (6) months under normal
use.
3. A/C power must be used to power the A/C module,
blowers, lights and AUX accessories if used with this
replace.
Optional Accessory Requirements
1. This replace may be used with a wall switch, wall
mounted thermostat and/or Signature Command wire-
less controls.
2. The command center control may be mounted on the
wall with the use of the SCSWEK 15ft. wall mount exten-
sion kit.
WARNING
Electrical connections s hould only
be performed by a qualified, licensed
electrician. Main power must be off when
connecting to main electrical power supply
or performing service. All wiring shall be
in compliance with all local, city and state
codes. The appliance, when installed, must
be electrically grounded in accordance with
local codes or in the absence of local codes,
with the National Electrical Code ANSI/NFPA
70 (latest edition) and Canadian Electrical
Code, CSA C22.1.
CAUTION
Label all wires before disconnecting when
servicing controls. Wiring errors can cause
improper and dangerous operation.
FP1909a
signature command valve
alternate view
8/08

20301938
16
B-Vent Specialty Gas Fireplaces
JUNCTION BOX WIRING
1. This should be done before framing the replace. Wire the receptacle into an electrical circuit.
Wire with minimum 60° C wire in accordance with prevailing
codes.
2. Remove the external junction box cover by removing the
screw from the side of the outside rebox wall. Junction box
was installed at the factory.
3. The junction box cover has a factory installed “romex” style
strain relief connector. After connecting the wires, route the
wire leads through this connector. Refer to the wiring dia-
gram in Figure 14.
Figure 14 -
Junction Box Wiring Diagram
FP1912
Junction box wiring
8/08
Junction Box
Factory Supplied
Not Supplied
120V AC
60Hz
ELECTRICAL INSTALLATION
COMMAND CENTER WALL INSTALLATION
The command center may be mounted on the wall with
the use of the SCSWEK Kit (15ft. cable, junction box, wall
cover).
Mount the junction box provided at the desired location
on the wall. Do not extend beyond the 15 ft. wire cable
provided. If a longer distance is required, the 15 ft. may be
extended up to 30 ft. maximum by using two (2) SCSWEK
cables plugged together.
Route the wire from junction box to lower control area at
bottom of replace. Unplug the 12" cable from the com-
mand center. Attach the connector to the pins from wire
by pushing in to connector making sure to follow the color
code on connector. Plug the 15 ft. extension cable into the
2 ft. cable. Remove command center from the replace
and plug the other end of the extension cable into the
command center. Snap on wall cover provided and screw
to junction box.
WALL SWITCH INSTALLATION
The wall switch wire connection is located off the 2 ft. wire
harness from the control box to the command center. Fig-
ure 15. The connection is labeled “Wall Switch”. Unplug
the male and female connectors and connect the two (2)
low voltage wires provided. Run wire to desired location
on wall. Up to 50 ft. of 18 ga. wire may be used if neces-
sary. Attach wires to wall switch. Mount the wall switch in
to junction box and screw on cover.
WARNING
Do not connect wall switch to 110 V
circuit.

20301938 17
B-Vent Specialty Gas Fireplaces
6V AC
Adapter
Control Board
RF Receiver
ON/OFF Button
Pilot
Black / Thermopile
Red / Thermopile
Sensor
Ignitor / Sparker
Conversion
NG/LP
Plug-in Connector
Control Board to Command Center
OFF/LO LED ON/HI
Master Switch
Command Center Optional
Wall Switch
Plug-in Connector
Stepper Motor to
Control Board
DC Power/Green
Ground
Plug-in Connector
Control Board to
Solenoid
Gas In
Gas Out
Pilot Gas Tubing
Valve
Spill Switch
ELECTRICAL INSTALLATION
CAUTION
Electrical connections should only be
performed by a qualied, licensed electrician.
Main power supply must be turned off before
connecting fans to the main electrical power
supply or performing service.
Figure 15 -
Signature Command Wiring Diagram
NOTE: Wall switch wires must be con-
nected together if a wall switch is not
being used.
Electrical Grounding Instructions: This
appliance is equipped with a three-prong
(grounding) plug for your protection against
shock hazard and should be plugged directly
into a properly grounded three-prong
receptacle.
WARNING

20301938
18
B-Vent Specialty Gas Fireplaces LOG PLACEMENT
ROCK WOOL PLACEMENT
Break up rock wool (ember material) into dime sized piec-
es. Place the pieces between metal lip and burner tube.
Maintain a 3/8” space free of ember material directly in
front of the front burner ports for best performance and
effect. Blockage of the burner ports may create increased
soot and carbon build-up. Figure xx
LG1027
bvent designer rock wool
Metal Lip
Metal Lip Ember Material
Ember Material
LG1027
Figure xx
LG1028
bv desgnr log 1
Log #1
Valve
LG1028
Figure xx
LOG PLACEMENT
1. Place V-notch in bottom of
Log #1 on center V section
of burner assembly. Smaller
end of log with two (2) pins
goes on same end as valve.
Figure xx

20301938 19
B-Vent Specialty Gas Fireplaces
LOG PLACEMENT
LG1029
bv dsgnr log 2
Log #2
Valve
LG1029
Figure xx
2. Place Log #2 on burner as-
sembly by placing notch on
lower right side of log against
far right grate bar. Place notch
on lower left of log on far left
grate bar. Rest log #2 on burn-
er assembly. Note orientation
of valve. Figure xx
LG1029
bv dsgnr log 3
Valve
Log #3
LG1030
Figure xx
3. Place Log #3 on burner assembly the
same as log #2 on this side of burner
assembly. Log #2 and Log #3 are identi-
cal. Note orientation of valve. Figure xx

20301938
20
B-Vent Specialty Gas Fireplaces LOG PLACEMENT
LG1031
bv dsgnr logs 4 5
Log #4
Log #5
Valve
LG1031
Figure xx
4. Place Log #4 by placing hole on pointed end
of log #4 onto pin on log #1. Rest notch on
bottom of log #4 onto corner of log #2. Fig-
ure xx
5. Place Log #5 by placing holes in bottom of
log onto pin on log #1 and pin on log #2.
Note orientation of log #5 and location of
valve. Figure xx
6. Place Log #6 by placing hole in bottom of
log onto pin on log #3 with pointed side
up. Figure xx
7. Place Log #7 by placing holes in bottom
of log onto pins on log #1 and log #3 with
curved side of log towards valve. Figure
xx
LG1033
bv dsgnr logs 6 7
Log #6
Log #7
LG1032
Figure xx
Valve