Majestic 400DVB User manual
540701
DVB cover
54D0701 2/09 Rev. 13
DVB Series Direct Vent Gas Fireplace
254D0701
High Elevations .....................................................6
Orifice Sizes, Pressures and BTUs ....................... 6
Before You Start ....................................................6
Fireplace Dimensions ...........................................7
Fireplace Framing ................................................. 8
Fireplace Location ................................................. 9
Optional Top Vent Installation.............................. 14
Installation Planning ............................................15
Vertical/Horizontal Termination
Configuration ....................................................... 16
Rear (Through-the-Wall) Applications ................. 18
Horizontal Termination Configurations ................ 20
Below Grade Installation ..................................... 22
Vertical Through-the-Roof Applications ............... 23
Installation for Vertical Termination ..................... 24
Flex Vent Installation ...........................................26
Check Gas Type..................................................28
Installing Gas Piping to Fireplace/Burner System
Location ..............................................................28
Electrical Wiring .................................................. 30
Lighting Pilot for the First Time ...........................34
Lighting Pilot .......................................................35
Lighting Burner .................................................... 36
To Turn Off Gas ................................................... 36
Operating Instructions .........................................43
To Turn Off Gas To Appliance ............................. 43
Hearth Brick Placement ...................................... 48
Rockwool Placement ..........................................48
Log Placement ....................................................48
Burner, Pilot and Control Compartment .............. 49
Pilot Flame ..........................................................49
Burner Flame ...................................................... 49
Vent System ........................................................50
Glass Door ..........................................................50
Logs .................................................................... 50
Rock Wool .......................................................... 50
Standing Pilot Ignition ......................................... 51
Signature Command System .............................. 53
Firebox Components ........................................... 54
Standing Pilot Millivolt Control ...........................56
Electronic Ignition ................................................ 58
Signature Command System .............................. 60
Vent Components ...............................................62
Logs .................................................................... 64
DVB Series Direct Vent Gas Fireplace
54D0701 3
Please leave these instructions with the appliance.
Please retain these instructions for future reference
.
This fireplace is a vented product. This fireplace must
be properly installed by a qualified service person. The
glass door must be properly seated and sealed. If this
unit is not properly installed by a qualified service person
with glass door properly seated and sealed, combustion
leakage can occur.
Early signs of
carbon monoxide poisoning are similar to the flu 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 certified
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 from hot surfaces to avoid
burns or clothing ignition. Fireplace will remain hot for
a time after shutdown. Allow surfaces to cool before
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 let cool before servicing, install-
ing, or repairing. Only a qualified service person
should install, service, or repair the fireplace. Have
burner system inspected annually by a qualified 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.
Turn off the gas valve and pilot light before cleaning
fireplace.
10. Have venting system inspected annually by a quali-
fied service person. If needed, have venting system
cleaned or repaired. See Cleaning and Maintenance,
page 35.
11. Keep the area around your fireplace clear of combus-
tible materials, gasoline, and other flammable vapor
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.
DVB Series Direct Vent Gas Fireplace
454D0701
12. Do not use this fireplace to cook food or burn paper
or other objects.
13. Never place anything on top of fireplace.
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 Electrical
Code, ANSI/NFPA 70, or the Canadian Electrical
Code, CSA C22.1.
16. Do not obstruct the flow 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
flooring, 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 fireplace if any part has been exposed to
or has been under water. Immediately call a quali-
fied service technician to inspect the appliance and
replace any part of the control system and any gas
control which as been submerged in water.
19. Do not operate fireplace if any log is broken.
20. Do not use a blower insert, heat exchanger insert, or
any other accessory not approved for use with this
fireplace.
21. Do not operate the fireplace with glass door removed,
cracked, or broken.
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.
It is not unusual for gas fireplaces to give off some
odor the first time it is burned. This is due to the
manufacturing process.
It is recommended that you burn your fireplace for at
least ten (10) hours the first time you use it. Place the
fan switch in the “OFF” position during this time.
DVB Series Direct Vent Gas Fireplace
54D0701 5
PRODUCT SPECIFICATIONS
• This appliance has been certified for use with either
natural or propane gas. Refer to appropriate data
plates.
• This appliance is not for use with solid fuels.
• The appliance is approved for bedroom or bedsitting
room installations.
• 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 USA, CSA
B149 in Canada.
• This appliance is mobile home approved.
• The appliance must be properly connected to a venting
system.
• The appliance is not approved for closet or recessed
installations.
FP2087
DVB features
Hi/Lo Knob
Off/Pilot/On Knob
On/Off/RS Switch
Ignitor
Blower Control
Optional Remote
Receiver
FP2087
Figure 1 -
Direct Vent type appliances draw all combustion air from outside of the dwelling through the vent pipe.
These appliances have been tested by CSA and found to comply with the established standards for
DIRECT VENT GAS FIREPLACE HEATERS in the USA and Canada as follows:
TESTED TO: ANSI Z21.88Bb-2008/CSA 2.33b-2008 STANDARDS
A manufactured home (USA only) or mobile home OEM installation must conform with the Manufactured
Home Construction and Safety Standard, or when such a standard is not
applicable, the , or
.
DVB Series Direct Vent Gas Fireplace
654D0701
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 accor-
dance with the current ANSI Z223.1/NFPA 54 and/or local codes having jurisdic-
tion.
In Canada, please consult provincial and/or local authorities having jurisdiction
for installation at elevations above 4,500 feet (1,370 m).
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"
Max. Btu/hr Input 21,000 21,000 24,000 24,000 26,000 26,000 26,000 26,000
Min. Btu/hr Input 15,000 15,000 17,000 17,000 20,000 20,000 20,000 20,000
Orifice Size #43 #54 #41 #53 #40 1.55 mm #40 1.55 mm
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)
• Rock Wool
• Log Set
• 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/LPG
• Square (Resistant to Sulfur Compounds)
• Pipe Wrench
DVB Series Direct Vent Gas Fireplace
54D0701 7
E
H
D
5/8” 1/2”
5/8”
1/2”
K
L
N
C
A
B
M
F
G
356O”
856M”
I
J
5/8"
1/2”
5/8"
1/2”
540701
DVB/BDV dims
A Overall Front Width 33Z\zn” 37Z\zn” 41Z\zn” 47Z\zn”
B Inside Width 29M\,” 32” 36” 42”
C Glass Width 27” 29” 33” 39”
D Pipe Centerline 16Z\x” 18Z\x” 20Z\x” 23Z\x”
E Rear Width 28” 29” 33” 39”
F Glass Height 18” 20C\,” 20C\,” 20C\,”
G Chassis Height 33M\,” 37Z\x” 37Z\x” 37Z\x”
H Depth 14” 16” 16” 16”
I Height to Standoffs 37” 40Z\x” 40Z\x” 40Z\x”
J Pipe Centerline Height 29B\,” 33Z\,” 33Z\,” 33Z\,”
K Top Face 2Z\,” 1Z\v” 1Z\v” 1Z\v”
L Side Face 1Z\x” 2Z\x” 2Z\x” 2Z\x”
M Bottom Face 15/16” 15/16” 15/16” 15/16”
N Overall Front Height 31B\,” 34C\v” 34C\v” 34C\v”
DVB Series Direct Vent Gas Fireplace
854D0701
Firebox framing can be built before or after the appliance is set in place. Construct firebox
framing following Figure 2 and the chart below for your specific installation requirements. See
Figure 3 on page 8 for firebox dimensions. The framing headers may rest on the top of the
firebox standoffs. Do not bring headers below top of standoffs.
The firebox may be installed directly on a combustible floor or raised on a platform of an appropri-
ate 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.
A 33Z\x” 37Z\x” 41Z\x” 47Z\x”
B 37Z\v” 40M\,” 40M\,” 40M\,”
C 28Z\v” 29Z\v” 33Z\v” 39Z\v”
D 14Z\,” 14B\,” 16B\,” 19B\,”
E 55ZZ\zn” 60M\,” 64M\,” 70M\,”
F 27ZC\zn” 30M\zn” 32M\zn” 35M\zn”
G 13C\v” 15C\v” 15C\v” 15C\v”
H 39C\,” 43Z\zn” 45M\,” 50Z\,”
H
G
D
F
E
A
C
FP2125
corner installation
B
A
FP2126
stud locations
1/2” or 5/8”
1/2” or 5/8”
FP2127
wall installs
C
A
G
C
G
A
Figure 2 -
FP2125
FP2126 FP2127
DVB Series Direct Vent Gas Fireplace
54D0701 9
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 finish-
ing details, and whether any optional accessories (i.e.
blower, 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 consider-
ation:
• Clearance to side-wall, ceiling, woodwork, and win-
dows. Minimum clearances to combustibles
• This fireplace may be installed along a wall, across a corner, or use an exterior chase. Refer to Figure
4 for suggested locations.
• Location should be out of high traffic areas and away from furniture and draperies due to heat from
appliance.
• Never obstruct the front opening of the fireplace.
• Do install in the vicinity where gasoline or other flammable liquids may be stored.
• Vent pipe routing. See Venting section found in this manual for allowable venting configurations.
• These units can be installed in a bedroom. See 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.
Y
EAB
C
D
F
YB
X
LU584-1
Locating unit
2/4/99 djt
A Flat on Wall
B Cross Corner
C Island**
D Room Divider*
E Flat on Wall Corner*
F Chase Installation
Y 4” Minimum
** Island (C) and room divider (D) installation is possible as long as the horizontal portion of vent system (X)
does not exceed 20'. See Installing Horizontal Termination Configuration on Pages 18 and 19.
* When you install your fireplace in (D) room divider or (E) flat on wall corner positions (Y), a minimum of 6"
clearance must be maintained from perpendicular wall and front of fireplace.
Figure 3 -
Fireplace Locations
DVB Series Direct Vent Gas Fireplace
10 54D0701
71” Minimum
11” Minimum
12”
Min.
Min. 4”
From Either
Side Wall
FP2248
mantel clearances
Figure 4 -
Clearances
Ceiling
Combustible Mantel
106M”
956O”
856M”7"
11"
6"
12"
10"
8"
6"
4"
21/2"
FP2204
mantel clearances
Wall
Stud
Insulation
Board Standoff
FP2204
Top of Fireplace
Opening
1"
256O”
3"
4"
156O”
256O”
45°
FP2093
mantel side clearance
Wall
Combustible
Material Area
Side of Fire-
place Opening
FP2093
Figure 5 -
Mantel Clearances
DVB Series Direct Vent Gas Fireplace
54D0701 11
The fireplace must be secured to the floor and/or to framing studs as shown in Figure 6. Use
two (2) wood screws or masonry/ concrete screws to secure fireplace to the floor. Use four (4)
screws to attach fireplace to framing. The side nailing flanges are 1/2" or 5/8" to accommodate
different wall thickness.
FP2094
secure fireplace
Framing
Nailing Flange
Screws
Nailing Flange
Screws
Drywall Support Tabs
(Do not use for framing or
header)
Framing
Nailing Flange
Screws
Nailing Flange
FP2094
Figure 6 -
Secure Fireplace to Floor and Framing Studs
DVB Series Direct Vent Gas Fireplace
12 54D0701
Consult local building codes before beginning the installation. The installer must make sure to select
the proper vent system for installation. Before installing vent kit, the installer must read this fireplace
manual and vent kit instructions.
Only a qualified 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 venting system:
• Installation of any damaged venting component.
• Unauthorized modification of the venting system.
• Installation of any component part not manufactured or approved by MHSC.
• Installation other than permitted by these instructions.
Any remote wiring (i.e. remote control, wall switch, and optional fan) must be done prior to
final finishing to avoid costly reconstruction.
Only noncombustible materials (i.e. brick, tile, slate, steel, or other materials with a UL fire rating
of Zero) may be used to cover the black surface of the appliance. A 300°F minimum adhesive may
be used to attach facing materials to the black surface. If joints between the finished wall and the
fireplace surround are sealed, a 300°F minimum sealant material (General Electric RTV103 or
equivalent) must be used.
DVB Series Direct Vent Gas Fireplace
54D0701 13
Z\x
1"
3"
1"
1"
FP2095
vent pipe clearance
A Minimum 3” Clearance to
the Top is Required Along
Horizontal Length until Flue
Pipe Penetrates Outside
Wall
A Minimum 1” Clear-
ance to Combustibles
Permitted All Around
Flue at Outside Wall
FP2095
Figure 7 -
Combustible Clearances for Vent Pipe
DVB Series Direct Vent Gas Fireplace
14 54D0701
The appliance is shipped as a rear vent unit. If the instal-
lation layout requires the unit to be a top vent configu-
ration the appliance can be converted by following the
steps below.
When removing and refitting the plates and adapter be
sure the associated gaskets are undamaged and refitted
as required.
1. Remove the eight (8) screws securing the flue pipe
adapter to the fireplace body. Figure 8
2. Set the flue pipe adapter aside, complete with the gasket.
Do not damage the gaskets as the adapter and gasket
must be refitted.
3. Remove the eight (8) screws securing the flue pipe cover
to the top of the intake box and remove the cover and
gasket. Figure 8
4. Remove six (6) screws securing the flue pipe to the back
of the intake box and remove the pipe and gasket. Figure
9
5. Replace flue pipe to top of firebox. Ensure the gasket
is in place and undamaged. Secure with six (6) screws.
Figure 10
6. Place the flue pipe cover and gasket removed in step 3
over the flue opening in back of the intake box.
7. Refit the flue pipe adapter and gasket to the top of fire-
place. Secure the adapter with eight (8) screws removed
in Step 1.
B\,
FP1991
remove screws
Screws
Flue Pipe
Cover
Flue Pipe
Adapter
FP1991
Figure 8 -
Remove 16 Screws from Flue Pipe Adapter and
Flue Pipe Cover
FP1992
remove flue pipe
Flue Cover
Screws
Flue Pipe
FP1992
Figure 9 - Remove Flue Pipe
FP1993
attach flue pipe
Flue Pipe
Screws
FP1993
Figure 10 -
Attach Flue Pipe to Top Vent Configurations
DVB Series Direct Vent Gas Fireplace
54D0701 15
There are two basic types of direct-vent installation:
• Horizontal Termination
• Vertical Termination
It is important to select the proper length of vent pipe for
the type of termination you choose. It is also important
to note the wall thickness.
Select the amount of vertical rise desired. All horizontal run of venting must have 1/4" rise for
every 12" of run towards the termination.
You may use up to three 90° elbows in this vent configuration. Refer to Horizontal Termination
Configurations on Pages 20 and 21.
Measure the distance from the fireplace floor to the ceiling. Add the ceiling thickness, the vertical
rise in an attic or second story, and allow for sufficient vent height above the roof line.
NOTE: You may use two 45° elbows in place of a 90° elbow. You must follow rise to run
ratios when using 45° elbows. The appliance is approved for use with three 90° elbows
maximum or a combination of 90° and 45° elbows up to a maximum of 270°.
For two-story applications, firestops are required at each floor level. If an offset is needed in the
attic, additional pipe and elbows will be required.
You may use a chase with a vent termination with exposed pipe on the exterior of the house.
See Installing Vent System in a Chase below. If pipe is enclosed in chase, it is not exposed.
It is very important that the venting system maintain its balance between the combustion air
intake and the flue gas exhaust. Certain limitations apply to vent configurations and must be
strictly followed.
A chase is a vertical boxlike structure built to enclose venting that runs along the outside of a
building. A chase is required for such venting.
DVB Series Direct Vent Gas Fireplace
16 54D0701
V
V
V
V
V
V
V
V
D
L
E
B
C
F
B
B
B B
B
M
I
A
A
J
H
G
A
Operable
Fixed
Closed Fixed
Closed
Opera-
ble
K
A
A
A
G
Vent Terminal Air Supply Inlet Area Where Terminals
are Not Permitted
Figure 11 - Horizontal Vent Termination Location
A = Clearance above the grade, a veranda, porch, deck, or balcony [*12" (305 mm) minimum].
B = Clearance to window or door that may be opened [*12" (305 mm) minimum].
C = Clearance to permanently closed window [*minimum 12" (305 mm) recommended to prevent condensation
on window]
D = Vertical clearance to ventilated soffit located above the terminal within a horizontal distance of two (2)
feet (610 mm) from the centerline of the terminal [18" (457 mm) minimum].
E = Clearance to unventilated soffits [12" (305 mm) minimum]. Clearance to vinyl soffit [30" (762 mm)].
F = Clearance to an outside corner. Figure 12
G = Clearance to an inside corner. Figure 12
H = *Not to be installed above a gas meter/regulator assembly within three (3) feet (914mm) horizontally
from the centerline of the regulator.
I = Clearance to service regulator vent outlet [*3' (914 mm) minimum].
J = Clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other appliance
[*12" (305 mm) minimum].
K = Clearance to a mechanical air supply inlet [*6' (1829 mm) minimum].
L = Clearance above a paved sidewalk or paved driveway located on public property [**7' (2133 mm)
minimum].
M = Clearance under veranda, porch, deck or balcony, refer to Figure 12.
* As specified in CSA B149 Installation Codes. Note: Local codes or regulations may require different
clearances.
** A vent must not terminate directly above a sidewalk or paved driveway, which is located between two
single-family dwellings and serves both dwellings.
*** Only permitted if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the
floor.
Z\x
DVB Series Direct Vent Gas Fireplace
54D0701 17
V
GG=6" (152mm)
FF=6" (152mm)
V
V
G
G = Combustible 24"(610mm)
Noncombustible 18"(457mm)
Combustible &
Noncombustible
H = 24" (610mm)
J = 20" (508mm)
V
H
J
C = Maximum depth of 48" (1219mm)
for alcove location
D = Minimum width for back wall of
alcove location
Combustible - 38" (965mm)
Noncombustible - 24" (610mm)
E =Clearance from corner in alcove
location
Combustible - 6" (152mm)
Noncombustible - 2" (51mm)
E
V
D
C
C
Inside Corner
Alcove Location
Outside Corner
Balcony with No Side Wall Balcony with Perpendicular
Side Wall
FP1951
termination clearances
Figure 12 -
Termination Clearances
The Vent Graph should be read in conjunction with the following
vent installation instructions to determine the relationship between
the vertical and horizontal dimensions of the vent system.
1. Determine the height of the center of the horizontal vent pipe exit-
ing through the outer wall. Using this dimension on the Sidewall
Vent Graph below, locate the point intersecting with the slanted
graph line.
2. From the point of this intersection, draw a vertical line to the
bottom of the graph.
3. Select the indicated dimension, and position the fireplace in
accordance with same.
Example: If the vertical dimension from the floor of the fireplace
is 11' (3.4 m) the horizontal run to the face of the outer wall must
not exceed 14' (4.3 m).
Example: If the vertical dimension from the floor of the unit is
7’ (2.14 m), the horizontal run to the face of the outer wall must
not exceed 81/2' (2.6 m).
Sidewall Vent Graph showing the relationship between vertical and
horizontal dimensions for a Direct Vent flue system.
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
2 4 6 8 10 1214 16 1820
eg: A
Dimensions in
Feet
20"
FP2248
sidewall vent graph
Vertical Dimension from the floor of Unit to the Center of
the Horizontal Vent Pipe
Horizontal Dimension from the Outside of
Termination to the Back of the Fireplace
Figure 13 -
Rear Wall Venting Graph
DVB Series Direct Vent Gas Fireplace
18 54D0701
When installed as a rear vent unit this appliance may be vented directly to a termination
located on the rear wall behind the appliance
• The maximum horizontal distance between the rear of the appliance and the outside of
termination is 20" (508 mm). Figure 14
• Only one 45° elbow is allowed in these installations.
DVR584-600
Rear vent no elbows
2/99 djt
Maximum
20”
Figure 14 -
Rear Vent Application, Maximum Horizontal Distance
DVR584-600
Sealant is not required to assemble BDV/DVB fireplace venting. Do not use silicone sealant
at the flue exhaust connections.
1. Find the pipe section’s direction label. The label arrow shall be pointed away from the
firebox and toward the termination. Firmly insert the initial rigid section/elbow into the
firebox outer collar. Simpson “GS” and Selkirk
“DT” outer walls are hemmed and will snap into
the collar’s tabs. Attach Simpson’s DirectVent
Pro by fully inserting into the collar and securing
with self tapping screws. The screws shall only
penetrate the flue outer wall.
Refer to vent manufacturer’s installation instruc-
tions to properly assemble flue.
2. Locate and cut the vent opening in the wall. For
combustible walls first frame in opening.
Cut a 11Z\x"H x
9Z\x" W hole through the interior wall.
Cut a 9Z\x"H x 9Z\
x"W square hole through the exterior wall frame.
Figure 16
Hole opening should
be 7Z\x" (190 mm) in diameter.
3. The center of the hole should line up with the
center line of the horizontal rigid vent pipe end.
Pipe shall always run level or uphill on horizontal
runs. Never run pipe down hill. Figure 16
FP1953
rigid pipe
Female Locking
Lugs
Male Slots
Horizontal runs of
vent must be supported
every three feet (914 mm).
Use wall straps for this pur-
pose.
FP1953
Figure 15 -
Rigid Vent Pipe Con-
nections
FP1954
wall framing
9Z\x”
(241 mm)
9Z\x”
(241 mm)
7Z\x”
(190 mm)
FP1954
Figure 16 -
Exterior Wall Framing Dimensions
DVB Series Direct Vent Gas Fireplace
54D0701 19
(continued)
4. Apply a bead of non-hardening mastic around the
outside edge of vent cap. Position the vent cap in the
center of hole on the exterior wall with the word “UP”
on the vent cap facing up. Insure proper clearance of
1" to combustibles is maintained to the flue. Attach the
vent cap with four wood screws supplied. Figure 17
A vinyl siding standoff (part #950) must be used with
the Simpson/Selkirk Horizontal Termination (part #985)
on vinyl, stucco or wood-clad exterior walls. Apply non-
hardening mastic around outside edge of the standoff
instead of the vent cap assembly. Figure 18
5. Slide the firestop over the vent pipe before connecting
the horizontal run to the vent cap. Figure 19
6. The termination should overlap the flue a minimum of
1Z\v" Apply silicone to the outer pipe/termination con-
nection. Fasten termination with screws provided.
7. Slide the firestop against the interior wall surface and
attach with screws. Figure 19
HOT
FP1955
horizontal vent cap
Vent Cap
Wood Screw
Apply Mastic to
All Four Sides
FP1955
Figure 17 -
Install Horizontal Termination
HOT
FP1956
vinyl siding standoff
Cut Vinyl Siding
Away to Fit
Standoff
Standoff
#950
Apply
Mastic to
All Four
Sides
Nut
Wood Screw
Bolt
Simpson
Termination
#985
FP1956
Figure 18 -
Install Simpson/Selkirk Vinyl Siding
Standoff and Termination
FP1957
install firestop
Interior Wall
Surface
Firestop
Vent Cap
(Horizontal
Termination)
Screw Horizontal
Vent Pipe
FP1957
Figure 19 -
Install Firestop on Horizontal Vent Pipe
DVB Series Direct Vent Gas Fireplace
20 54D0701
The Vent Graph, showing the relationship between vertical and hori-
zontal side wall venting, will help to determine the various dimensions
allowable. Figure 20
NOTE: Horizontal sections of this vent system require a minimum of
3" clearances to combustibles at the top of the flue and 1" clearance
at the sides and bottom until the flue penetrates the outside wall.
A minimum 1" clearance all around the flue is acceptable at this
point of penetration.
Vertical sections of this vent system require a minimum of 1"
clearance to combustibles on all sides of the pipe.
When vent exits through foundations less than 20" below outcrop, the
termination must be flush up with outcropped wall above.
It is best to locate the fireplace in such a way that minimizes the number
of offsets and horizontal vent length.
The horizontal vent run refers to the total length of vent pipe from the
flue collar of the fireplace (or the top of the Transition Elbow) to the face
of the outer wall.
• The maximum number of 90° elbows per side wall installation
is three (3). Figure 21
• If a 90° elbow is fitted directly on top of the fireplace flange the
maximum horizontal vent run before the termination or a vertical
rise is 36” (914 mm). Figure 22
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
2 4 6 8 10 1214 16 1820
eg: A
Dimensions in
Feet
20"
FP2248
sidewall vent graph
Vertical Dimension from the floor of Unit to the Center of
the Horizontal Vent Pipe
Horizontal Dimension from the Outside of
Termination to the Back of the Fireplace
Figure 20 -
Rear Wall Venting Graph
FP1176
max 90 bends
3 x 90°
Elbows
Figure 21 -
Maximum Three (3) 90°
Elbows per Installation
3 x 90°
Elbows
FP1176
Max 20"
Max 20"
36"
(914 mm)
Max.
36"
(914 mm)
Max.
FP1177
max horizontal run
FP1177
Figure 22 -
Maximum Horizontal Run with No Rise
This manual suits for next models
3
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