Majestic fireplaces DVB4136 Mounting instructions

INSTALLER / CONSUMER
SAFETY INFORMATION
PLEASE READ THIS MANUAL
BEFORE INSTALLING AND USING
APPLIANCE
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.
FOR OUR SAFETY
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electric switch; do not
use any phone in your building.
• Immediately call your gas supplier from
your neighbor’s phone. Follow the gas
supplier’s instructions.
• If you cannot reach your gas supplier, call
the fire department.
DO NOT STORE OR USE
GASOLINE OR OTHER
FLAMMABLE VAPORS AND
LIQUIDS IN THE VICINITY OF THIS
OR ANY OTHER APPLIANCE.
Direct Vent Gas Fireplace
Models: DVB4136
Homeowner’s Installation and
Operating Manual
CERTIFIED
D
E
S
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G
N
C
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T
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F
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D
20012322 6/08 Rev. 6
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
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2
DVB4136 Direct Vent Gas Fireplace
20012322
Table of Contents
PLEASE READ THE INSTALLATION & OPERATING INSTRUCTIONS BEFORE USING APPLIANCE.
Thank you and congratulations on your purchase of a CFM Corporation fireplace.
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.
Installation & General Information, Warnings, Cautions ....................................................................3
Operating Instructions Commonwealth of Massachusetts Requirements .......................................................4
Fireplace Dimensions ..................................................................................................5
Locating Your Fireplace ...............................................................................................6
Clearance to Combustibles ..........................................................................................6
Mantels ........................................................................................................................6
Hearth ..........................................................................................................................6
Framing & Finishing .....................................................................................................6
Hood Installation ..........................................................................................................7
Final Finishing ..............................................................................................................7
Gas Specifications .......................................................................................................7
Gas Inlet and Manifold Pressures ................................................................................7
High Elevations ............................................................................................................8
Gas Line Installation ....................................................................................................8
Remote ON/OFF Switch Installation ............................................................................8
Alternate Switch Location ............................................................................................8
EB-1 Electrical Box ......................................................................................................9
Optional Top Vent Application ....................................................................................10
General Venting General Venting ......................................................................................................... 11
General Venting Information - Termination Location ..................................................12
General Information Assembling Vent Pipes .............................................................13
How to Use the Vent Graph .......................................................................................14
Rear Wall Vent Application & Installation ...................................................................15
Vertical Sidewall Application & Installation .................................................................16
Below Grade Installation ............................................................................................20
Vertical Through-the-Roof Application & Installation ..................................................20
Venting Components .................................................................................................23
Operating Instructions Glass Information .......................................................................................................24
Louvre Removal .........................................................................................................24
Window Frame Assembly Removal ...........................................................................24
Glass Cleaning ...........................................................................................................24
Installation of Optional Ceramic Panels .....................................................................24
Replacement of Ceramic Hearth Panels (if provided) ...............................................25
Installation of Logs .....................................................................................................25
Flame & Temperature Adjustment ..............................................................................28
Flame Characteristics ................................................................................................28
Inspecting the Venting System ..................................................................................28
Lighting and Operating Instructions (SIT 820 Valve) .................................................29
Lighting and Operating Instructions (AF4000 Valve) .................................................30
Troubleshooting Gas Control (SIT 820 Valve) ...........................................................31
Troubleshooting Gas Control (AF4000 Valve) ..........................................................32
AF4000 Valve Gas Control System Error Codes .......................................................34
Instructions for RF Comfort Control Valve .................................................................35
Fuel Conversion Instructions .....................................................................................39
Maintenance Cleaning the Standing Pilot Control System ..............................................................42
Replacement Parts ...................................................................................................................................43
Optional Accessories Fan Kits ......................................................................................................................46
Hard (Direct) Wire Hook Up .......................................................................................46
Remote Controls ........................................................................................................47
Ceramic Refractory Panels ........................................................................................47
Decorative Bay Windows ...........................................................................................47
Decorative Frame Trim ..............................................................................................47
Arch/Square Face Kit .................................................................................................48
Optional Louvre Kit ....................................................................................................48
Filigree Louvre Kit ......................................................................................................48
Battery Backup ...........................................................................................................49
Warranty ...................................................................................................................................51
Energuide ...................................................................................................................................52

3
DVB4136 Direct Vent Gas Fireplace
20012322
Installation & Operating Instructions
This gas appliance should be installed by a qualified installer,
preferably NFI or WETT (Canada) certified, in accordance with
local building codes and with current CSA-B149.1 Installation
codes for Gas Burning Appliances and Equipment. If the unit is
being installed in a mobile home, the installation should comply
with the current CAN/CSA Z 240.4 code. For U.S.A Installations
follow local codes and/or the current National Fuel Gas Code.
ANSI Z223.1/NFPA 54.
FOR SAFE INSTALLATION AND OPERATION PLEASE
NOTE THE FOLLOWING:
1 . This fireplace gives off high temperatures and should be
located out of high traffic areas and away from furniture
and draperies.
2. Children and adults should be alerted to the hazards of the
high surface temperatures of this fireplace and should stay
away to avoid burns or ignition of clothing.
3. CAUTION: Due to high glass surface temperature chil-
dren should be carefully supervised when in the same
room as fireplace.
Proposition 65 Warning: Fuels used in gas, woodburning 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 & Safety Code Sec. 25249.6
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
Remove any plastic from trim parts before turning the
fireplace ON.
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 your CFM Corporation gas fireplace to
give off some odor the first time it is burned. This is due
to the manufacturing process.
Please ensure that your room is well ventilated
-open all windows.
It is recommended that you burn your fireplace for at
least ten (10) hours the first time you use it. If the op-
tional fan kit has been installed, place the fan switch in
the “OFF” position during this time.
WARNING: Check with your electronics manufac-
turer before installing a television or other electronic
device above this fireplace.
11. When fireplace is installed directly on carpeting, vinyl tile
or any combustible material other than wood, this fireplace
must be installed on a metal or wood panel extending the
full width and depth of the fireplace.
12. This fireplace requires adequate ventilation and combus-
tion air to operate properly.
13. This fireplace must not be connected to a chimney flue
serving a separate solid fuel burning fireplace.
14. When the fireplace is not in use it is recommended that the
gas valve be left in the OFF position.
This appliance may be installed in an aftermarket
permanently located, manufactured home or mobile
home, where not prohibited by local codes.
This appliance is only for use with the type of gas
indi-cated on the rating plate. This appliance is not
convertible for use with other gases, unless a certi-
fied kit is used.
DVB4136
Certified To
ANSI Z21.88b-2008 / CSA 2.33b-2008
Vented Gas Fireplace Heater
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4. Under no circumstances should this fireplace be modified.
Parts removed for servicing should be replaced prior to
operating this fireplace again.
5. Installation and any repairs to this fireplace must be
performed by a qualified installer, service agency or gas
supplier. A professional service person should be contacted
to inspect this fireplace annually. Make it a practice to have
all of your gas fireplaces checked annually. More frequent
cleaning may be required due to excess lint and dust from
carpeting, bedding material, etc.
6. Control compartments, burners and air passages in this
fireplace should be kept clean and free of dust and lint.
Make sure the gas valve and pilot light are turned off before
you attempt to clean this fireplace.
7. The venting system (chimney) of this fireplace should be
checked at least once a year and if needed your venting
system should be cleaned.
8. Keep the area around your fireplace clear of combustible
materials, gasoline and other flammable vapor and liquids.
This fireplace should not be used as a drying rack for cloth-
ing, nor should Christmas stocking or decorations be hung
in the area of it.
9. Under no circumstances should any solid fuels (wood, coal,
paper or cardboard etc.) be used in this fireplace.
10. The flow of combustion and ventilation air must not be
obstructed in any way.

4
DVB4136 Direct Vent Gas Fireplace
20012322
Installation & Operating Instructions
Requirements for the Commonwealth of
Massachusetts
All gas fitting and installation of this heater shall only be
done by a licensed gas fitter or licensed plumber.
For all side wall horizontally vented gas fueled
equipment installed in every dwelling, building or
structure used in whole or in part for residential
purposes, including those owned or operated by the
Commonwealth and where the side wall exhaust vent
termination is less than seven (7) feet above finished
grade in the area of the venting, including but not limited
to decks and porches, the following requirements shall
be satisfied:
Installation of Carbon Monoxide Detectors
At the time of installation of the side wall horizontal
vented gas fueled equipment, the installing plumber
or gas fitter shall observe that a hard wired carbon
monoxide detector with an alarm is installed on each
additional level of the dwelling, building or structure
served by the side wall horizontally vented gas fueled
equipment. It shall be the responsibility of the property
owner to secure the services of qualified licensed
professionals for the installation of hard wired carbon
monoxide detectors.
In the event that the side wall horizontally vented gas
fueled equipment is installed in a crawl space or an
attic, the hard wired carbon monoxide detector with
alarm and battery back-up may be installed on the next
adjacent floor level.
In the event that the requirements of this subdivision
can not be met at the time of completion of installation,
the owner shall have a period of thirty (30) days
to comply with the above requirements; provided,
however, that during said thirty (30) day period, a
battery operated carbon monoxide detector with an
alarm shall be installed.
Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in
accordance with the above provisions shall comply with
NFPA 720 and ANSI/UL 2034 listed and IAS certified.
Signage
A metal or plastic identification plate shall be
permanently mounted to the exterior of the building at
a minimum height of eight (8) feet above grade directly
in line with the exhaust vent terminal for the horizontally
vented gas fueled heating appliance or equipment. The
sign shall read, in print size no less than one-half (1/2)
inch in size, “GAS VENT DIRECTLY BELOW, KEEP
CLEAR OF ALL OBSTRUCTIONS”.
Inspection
The state or local gas inspector of the side wall
horizontally vented gas fueled equipment shall not
approve the installation unless, upon inspection, the
inspector observes carbon monoxide detectors and
signage installed in accordance with the provisions of
248 CMR 5.08(2)(a)1 through 4.
Exemptions
The following equipment is exempt from 248 CMR
5.08(2)(a)1 through 4:
• The equipment listed in Chapter 10 entitled
“Equipment Not Required To Be Vented” in the most
current edition of NFPA 54 as adopted by the Board;
and
• Product Approved side wall horizontally vented gas
fueled equipment installed in a room or structure
separate from the dwelling, building or structure
used in whole or in part for residential purposes.
MANUFACTURER REQUIREMENTS
Gas Equipment Venting System Provided
When the manufacturer of Product Approved side
wall horizontally vented gas equipment provides a
venting system design or venting system components
with the equipment, the instructions provided by the
manufacturer for installation of the equipment and the
venting system shall include:
• Detailed instructions for the installation of the venting
system design or the venting system components;
and
• A complete parts list for the venting system design or
venting system.
Gas Equipment Venting System NOT Provided
When the manufacturer of a Product Approved side
wall horizontally vented gas fueled equipment does
not provide the parts for venting the flue gases, but
identifies “special venting systems”, the following
requirements shall be satisfied by the manufacturer:
• The referenced “special venting system” instructions
shall be included with the appliance or equipment
installation instructions; and
• The “special venting systems” shall be Product
Approved by the Board, and the instructions for
that system shall include a parts list and detailed
installation instructions.
A copy of all installation instructions for all Product
Approved side wall horizontally vented gas fueled
equipment, all venting instructions, all parts lists
for venting instructions, and/or all venting design
instructions shall remain with the appliance or
equipment at the completion of the installation.

5
DVB4136 Direct Vent Gas Fireplace
20012322
Fireplace Dimensions (Installed as Top Vent)
Fig. 1 Fireplace specifications and framing dimensions.
12322
DVB4136 top specs
7/07 djt
40” (1022 mm)
Rough Opening Width
Rough
Opening
Height
Rough
Opening
Depth
Gas Line
Access
45” (1162 mm)
32” (822 mm)
20”
(524 mm)
7”
(191 mm) 22” (575 mm)
7” (178 mm) Dia.
4” (102 mm) Dia.
5/8” (16 mm)
2”
(54 mm)
7”
(191 mm)
6”
(152 mm)
24”
(613 mm)
1”
(25 mm)
40” (1016 mm)
36” (918 mm)
40”
(1026 mm)
36”
(918 mm)
Recessed
Nailing Flange
15”
(381 mm)
3”
(92 mm)
Electrical
Access
40”
(1016 mm)
45” (1162 mm)
5/8” (16 mm)
64” (1645 mm)
6”
(152 mm)
20”
(524 mm)
Fireplace Dimensions (Installed as Rear Vent)
Fig. 2 Fireplace specifications and framing dimensions.
12322
DVB4136 rear specs
7/07 djt
20”
(524 mm)
40” (1022 mm)
Rough Opening Width
Gas Line
Access
Rough
Opening
Height
Rough
Opening
Depth
45” (1162 mm)
32” (822 mm)
64” (1645 mm)
5/8” (16 mm)
20”
(524 mm)
22” (575 mm)
5/8” (16 mm)
31”
(803 mm)
30”
(781 mm)
2”
(54 mm)
7”
(191 mm)
6”
(152 mm)
24”
(613 mm)
1”
(25 mm)
40” (1016 mm)
36” (918 mm)
40”
(1026 mm)
36”
(918 mm)
Recessed
Nailing Flange
15”
(381 mm)
3”
(92 mm)
Electrical
Access
40”
(1016 mm)
45” (1162 mm)
6”
(152 mm)

6
DVB4136 Direct Vent Gas Fireplace
20012322
Clearance to Combustibles
Top of unit to ceiling ................................. 36” (914 mm)
Front of unit to combustibles ................... 36” (914 mm)
Appliance
Top of standoff ....................................... 0” (0 mm)
Bottom ..................................................... 0” (0 mm)
Side ......................................................... 0” (0 mm)
Back ........................................................ 0” (0 mm)
Venting
Concentric sections of DV Vent ................... 1” (25 mm)
Nonconcentric sections of DV Vent
Sides and bottom .................................. 1” (25 mm)
Top ........................................................ 2” (51 mm)
Mantels
The height that a combustible mantel is fitted above the
fireplace is dependent on the depth of the mantel. This
also applies to the distance between the mantel leg (if
fitted) and the fireplace.
For the correct mounting height and widths, refer to
Figures 4a, 4b and the Mantel Chart below.
The distances and reference points are not affected by
the fitting of a bay window front trim kit.
Noncombustible mantels and legs may be installed at
any height and width around the appliance. When using
paint or lacquer, it must be heat resistant to prevent
discoloration.
Hearth
A hearth is not mandatory, but is recommended for
aesthetic purposes. We recommend a noncombustible
hearth which projects out 12” (305 mm) or more from
the front of the fireplace.
Cold climate installation recommendation:
When installing this unit against a non-in-
sulated exterior wall or chase, it is manda-
tory that the outer walls be insulated to
conform to applicable insulation codes.
Y
EAB
C
D
F
YB
X
LU584-1
Locating unit
2/4/99 djt
Locating Your Fireplace
LU584-1
A) Flat on wall B) Cross corner C) **Island
D) *Room divider E) *Flat on wall corner F) Chase installation
Y) 0” minimum (Check minimum if mantel leg is used)
NOTE (Fig. 3):
** Island (C) and Room Divider (D) installation is possible as long as
the horizontal portion of the vent system (X) does not exceed 20’ (6
m). See details in Venting Section.
* When you install your fireplace in(D) Room divider or (E) Flat
on wall corner positions (Y), a minimum of 6“ (152 mm) clearance
must be maintained from the perpendicular wall and the front of the
fireplace.
Fig. 3 Locating gas fireplace.
Framing and Finishing
Check fireplace to make sure it is levelled
and properly positioned.
To mount the appliance: Choose the location. (Fig. 5)
1. This unit comes with four (4) flanges pre-mounted
on both sides of the fireplace to allow two different
drywall thicknesses to be used. Flange “A” is for 1/2”
drywall while flange “B“ is for 5/8” drywall.
2. Bend the desired flanges out 90° on both sides of
the fireplace. Slide the fireplace into the framed
opening until the flanges contact the front surfaces
of the framing. Level the unit and secure it firmly in
place.
A B C DE
V
W
X
Y
Z
Fireplace
CFM146
DV Mantel Chart
7/5/01 sta
CFM146
Mantel Chart
Mantel Shelf Mantel from Top
Ref. or Breast Plate Ref. of Comb. Chamber
Depth
V 10” (254 mm) A 19” (483 mm)
W 8” (203 mm) B 17” (432 mm)
X 6” (152 mm) C 15” (381 mm)
Y 4” (101 mm) D 13” (330 mm)
Z 2” (51 mm) E 11” (279 mm)
Fig. 4a Combustible mantel minimum installation.
Top of Combustion
Chamber
Standoff
Noncombstible
Material
3/4” (19 mm) Scribe moulding
for use with CFMCabinets

7
DVB4136 Direct Vent Gas Fireplace
20012322
J
F
G
H
I
Mantel
Leg
CFM164a
Mantel Leg Chart
06/22/01 sta
CFM170
DV Builder Front
View
O
N
M
L
K
Black
Surround
Face
CFM164a
Side of
Combustion Chamber
CFM170
Mantel Mantel Leg from Side
Ref. Leg Depth Ref. of Comb. Opening
F 10” (254 mm) K 11¹⁄₂” (292 mm)
G 8” (203 mm) L 9¹⁄₂” (241 mm)
H 6” (152 mm) M 7¹⁄₂” (191 mm)
I 4” (101 mm) N 5¹⁄₂” (140 mm)
J 2” (51 mm) O 3¹⁄₂” (89 mm)
Fig. 4b Combustible mantel leg minimum installation.
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AB
Flange Drywall
Position Depth
A 1/2” / 13 mm
B 5/8” / 16 mm
Flange Location for
Desired Drywall Depth
FP1539
Fig. 5 Drywall flange location.
Final Finishing
Noncombustible materials such as brick or tile can be
extended over the edges of the face of the fireplace.
Do not cover the window frame assembly, any vent,
louvre assembly top or louvre assembly bottom. If
a Trim Kit is to be installed, brick and tile will have to be
installed flush with the side of this appliance.
Gas Specifications
Max. Min.
Gas Input Input
Model Fuel Control BTU/h BTU/h
DVB4136RN Natural Gas Millivolt Hi/Lo 30,000 18,500
DVB4136RP Propane Millivolt Hi/Lo 30,000 17,000
DVB4136IN Natural Gas 6V DC Hi/Lo 30,000 21,800
DVB4136IP Propane 6V DC Hi/Lo 30,000 21,300
DVB4136RFN Natural Gas Comfort Control 30,000 21,000
DVB4136RFP Propane Comfort Control 30,000 23,500
Gas Inlet and Manifold Pressures
Natural LP (Propane)
Minimum Inlet Pressure 5.5” w.c. 11.0” w.c.
Maximum Inlet Pressure 14.0” w.c. 14.0” w.c.
Manifold Pressure 3.5” w.c. 10.0” w.c.
3/4” (19 mm) Scribe
Moulding for use with
CFM Cabinets
Hood Installation
CAUTION: Hood MUST be permanently installed.
1. Remove top louvre. Carefully remove hood from
inside top louvre opening.
2. Remove three (3) sheet metal screws in bottom
flange of fireplace surround top.
3. Install the hood by aligning the three holes in bottom
flange of fireplace surround top. (Fig. 6)
4. Secure hood to bottom flange of fireplace surround
top using three screws removed in Step 2. (Fig. 6)
5. Replace top louvre.
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
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Hood
Sheet Metal
Screws
FP1852
Fig. 6 Secure hood to fireplace with sheet metal screws.

8
DVB4136 Direct Vent Gas Fireplace
20012322
High Elevations
Input ratings are shown in BTU per hour and are
certified without deration for elevations up to
4,500 feet (1,370m) above sea level.
For elevations above 4,500 feet (1,370m) in USA,
installations must be in accordance with the
current ANSI Z223.1/NFPA 54 and/or local codes
having jurisdiction.
In Canada, please consult provincial and/or local
authorities having jurisdiction for installations at
elevations above 4,500 feet (1,370m).
Gas Line Installation
When purging gas line the front glass
must be removed.
The gas pipeline can be brought in through the right
side of the appliance. Knockouts are provided at conve-
nient locations to allow for the gas pipe installation and
testing of any gas connection.
The gas line connection can be made with properly
tinned 3/8” copper tubing, 1/2” rigid pipe or an approved
flex connector. Since some municipalities have addi-
tional local codes, it is always best to consult your local
authority and the CSA-B149.1 installation codes.
For USA installations consult the current National Fuel
Gas Code, ANSI Z223.1/NFPA 54.
FP297A
INSTA VENT FREE
UVHB26 GAS SUPPLY
7/1/98
1/2” Gas Supply
1/2” NPT x 3/8” Flare Shut-
off Valve
3/8” Flex Line
(from valve)
FP297a
Fig. 7 Typical gas supply installation.
Always check for gas leaks with a mild
soap and water solution applied with a
brush no larger than 1” (25 mm). Never
apply soap and water solution with a spray
bottle. Do not use an open flame for leak
testing.
The fireplace valve must not be subjected
to any test pressures exceeding 1/2 psi.
Isolate or disconnect this or any other gas
appliance control from the gas line when
pressure testing.
The gas control is equipped with a captured screw type
pressure test point, therefore it is not necessary to pro-
vide a 1/8” test point up stream of the control.
When using copper or flex connector use only approved
fittings. Always provide a union when using black iron
pipe so that the gas line can be easily disconnected for
burner or fan servicing. (Fig. 7) See the gas specifica-
tions for pressure details and ratings.
Remote ON/OFF Switch Installation
(RN/IN Models Only)
Do not wire the remote ON/OFF wall switch for this gas
appliance into a 120v power supply.
1. Thread wire through the electrical knockout located
on either side of the unit. Take care not to cut the
wire or insulation on metal edges. Ensure the wire is
secured and protected from possible damage. Run
one end of the gas control valve and the other end to
the conveniently located wall switch.
2. Attach the wire to the ON/OFF switch and install
switch into receptacle box. Attach cover plate to
switch.
3. Connect wiring to gas valve. (Fig. 8)
TPTH TH
TP
FP1218
Remote switch
wiring
8/02
Remote ON/OFF
Switch
FP1218
Fig. 8 Remote switch wiring diagram for R models.
Alternate Switch Location
The remote switch can be installed on either side of
the access door. Mount the switch to the switch bracket
provided. Screw the bracket on either side of the frame,
line up the screws with the prepunched holes. (Fig. 9)
FP1024
alternate
remote switch
location
1/27/00 djt
FP1024
Fig. 9 Alternate switch location.

9
DVB4136 Direct Vent Gas Fireplace
20012322
EB-1 Electrical Box
The fireplace, when installed, must be
electrically connected and grounded in
accordance with local codes or, in the ab-
sence of local codes, with the current CSA
C22.1 Canadian Electrical Code.
For USA installations, follow the local
codes and the national Electrical Code
ANSI/NFPA No. 70.
It is strongly suggested that the wiring of
the EB-1 Electrical Junction Box be carried
out by a licensed electrician.
Ensure that the power to the supply line
has been disconnected before commenc-
ing this procedure.
The EB-1 electrical junction box has been
supplied standard on the DVB4136 models to allow for
the easy installation of an optional fan kit.
To connect the EB-1 box to the house electrical supply,
follow the steps below.
FP580
INSTA VENT FREE
EB1 JUNCTION BOX
11/18/97
OUTSIDE
Electrical Box
FRONT OF UNIT
INSIDE
FRONT OF UNIT
FP580
Fig. 10 EB-1 receptacle.
1. Unscrew the retaining screw from the EB-1 base
plate (Fig. 10) and remove the EB-1 assembly from
the fireplace.
2. Remove the front cover of the EB-1 box.
3. Remove the plug socket assembly from the EB-1
box.
4. Feed the supply line in from the outside through the
cable clamp. (Fig. 10)
5. Connect black wire of the power supply line to the
brass screw (polarized) of the socket assembly.
6. Connect the white wire of the power line to the
chrome screw of the socket assembly.
7. Connect the ground wire of the supply line to the
green screw of the socket assembly.
8. Refit the socket assembly back into the electrical
box and replace the cover plate. Secure the cable
with the clamp on the outside of the unit to prevent
strain on the connections.
9. The EB-1 electrical junction box is now ready to sup-
ply power to the FK12 or FK24 fan kits if fitted.

10
DVB4136 Direct Vent Gas Fireplace
20012322
Optional Top Vent Application
The DVB4136 fireplace is shipped as a rear vent unit. If
the layout requires a top vent, convert the unit following
the steps below.
1. Remove the 10 screws securing outer collar adapter
to fireplace. (Fig. 11)
2. Set outer collar adapter aside.
3. Remove the four (4) screws securing flue cover to
top of unit and remove flue cover. (Fig. 12)
4. Remove the four (4) screws securing flue pipe to
back of unit. Remove flue pipe. (Fig. 12)
5. Secure flue cover to back of flue outlet. Be sure to
replace gasket. (Fig. 13)
6. Install flue pipe and gasket removed in step 4 to top
of unit with four (4) screws. Be sure to replace gas-
ket. (Fig. 13)
7. Secure outer collar adapter to unit with the round
collar on top, secure with 10 screws.
NOTE: Be sure not to damage any gasket material.
FP1030a
Outer Collar Adapter
Flue Pipe
7/07 djt
Outer
Collar
Adapter
Flue
Pipe
Remove
Screws
(5)
Remove Screws
(5) FP1030a
Fig. 11 Remove screws from outer collar adapter.
FP1027
DV360/580
Outer Collar Adapter
Flue Pipe
1/27/00 djt
Flue
Cover
Flue
Pipe
Remove
Screws
(4)
Remove Screws (4) FP1027
Fig. 12 Remove flue cover and flue pipe.
DVT584-604
Outer Collar Adapter
Flue Pipe
3/11/99 djt
Flue Pipe
Replace
Screws (4)
Replace
Screws
(4)
Flue Cover FP1028
Fig. 13 Replace flue cover and flue pipe.
FP1031a
Outer Collar Adapter
Flue Pipe completed
7/07 djt
FP1031a
Fig. 14 Complete conversion.
After conversion to top vent configuration,
the 4” (102 mm) flue pipe should be con-
centric within the 7” (175 mm) outer collar.

11
DVB4136 Direct Vent Gas Fireplace
20012322
General Venting
Your fireplace is approved to be vented either through
the side wall, or vertical through the roof.
• Only CFM Corporation venting components spe-
cifically approved and labelled for this fireplace
may be used.
• Venting terminals shall not be recessed into a wall or
siding.
• Horizontal venting which incorporates the twist lock
pipe must be installed on a level plane without an
inclining or declining slope.
• Horizontal venting which incorporates the use of flex
venting shall have an inclining slope from the unit of
1” (25 mm) per 24” (610 mm).
There must not be any obstruction such as bushes, gar-
den sheds, fences, decks or utility buildings within 24”
(610 mm) from the front of the termination hood.
Do not locate termination hood where excessive snow
or ice build up may occur. Be sure to check vent termi-
nation area after snow falls, and clear to prevent ac-
cidental blockage of venting system. When using snow
blowers, make sure snow is not directed towards vent
termination area.
Location of Vent Termination
It is imperative the vent termination be located observ-
ing the minimum clearances as shown on following
page.

12
DVB4136 Direct Vent Gas Fireplace
20012322
Fig. 15 Vent termination locations.
V
V
V
V
V
V
V
X
X
X
D
E
B
B
B
C
B
M
B
A
J
K
F
L
VENT TERMINATION AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED
H
I


Operable
Operable Fixed
Closed
V
B
CFM145a
DV Termin Location
5/01/01 Rev. 12/05/01
sta
INSIDE
CORNER DETAIL
V
A
G
N
N
CFM145a
General Venting Information - Termination Location
A = Clearance above grade, veranda, porch, 12” (30cm) 12” (30cm)
deck, or balcony
B = Clearance to window or door that may be 6” (15cm) for appliances 6” (15cm) for appliances
opened < 10,000Btuh (3kW), 12” (30cm) < 10,000 Btuh (3kW), 9”
for appliances > 10,000 Btuh (3kW) and (23cm) for appliances > 10,000
< 100,000 Btuh (30kW), 36” (91cm) Btuh (3kW) and < 50,000 Btuh
for appliances > 100,000 Btuh (30kW) (15kW), 12” (30cm) for
appliances > 50,000 Btuh (15kW)
C = Clearance to permanently closed window 12” (305mm) recommended to 12” (305mm) recommended to
prevent window condensation prevent window condensation
D = Vertical clearance to ventilated soffit located
above the terminal within a horizontal 18” (458mm) 18” (458mm)
distance of 2’ (610mm) from the center
line of the terminal
E = Clearance to unventilated soffit 12” (305mm) 12” (305mm)
F = Clearance to outside corner see next page see next page
G = Clearance to inside corner (see next page) see next page see next page
H = Clearance to each inside of center line 3’ (91cm) within a height of 15’ (5m) 3’ (91cm) within a height of 15’
extended above meter/regulator assembly above the meter/regulator assembly (5m) above the meter/regulator
assy
I = Clearance to service regulator vent outlet 3’ (91cm) 3’ (91cm)
J = Clearance to nonmechanical air supply inlet 6” (15cm) for appliances < 10,000 6” (15cm) for appliances
to building or the combustion air inlet to any Btuh (3kW), 12” (30cm) for < 10,000 Btuh (3kW), 9”
other appliances appliances > 10,000 Btuh (3kW) and (23cm) for appliances > 10,000
< 100,000 Btuh (30kW), 36” (91cm) Btuh (3kW) and < 50,000 Btuh
for appliances > 100,000 Btuh (30kW) (15kW), 12” (30cm) for
appliances > 50,000 Btuh (15kW)
K = Clearance to a mechanical air supply inlet 6’ (1.83m) 3’ (91cm) above if within 10
feet (3m) horizontally
L = Clearance above paved sidewalk or paved 7’ (2.13m)† 7’ (2.13m)†
driveway located on public property
M = Clearance under veranda, porch, deck or 12” (30cm)‡ 12” (30cm)‡
balcony
N = Clearance above a roof shall extend a minimum of 24” (610mm) above the highest point when it passes through the roof
surface, and any other obstruction within a horizontal distance of 18” (450mm).
1 In accordance with the current CSA-B149 Installation Codes
2 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Codes
† A vent shall 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 2 sides beneath the floor:
NOTE: 1. Local codes or regulations may require different clearances.
2. The special venting system used on Direct Vent Fireplaces are certified as part of the appliance, with clearances tested and
approved by the listing agency.
3. CFM Corporation assumes no responsibility for the improper performance of the appliance when the venting system does not
meet these requirements.
Canadian Installations1 US Installations2

13
DVB4136 Direct Vent Gas Fireplace
20012322
Fig. 16 Termination clearances.
General Information Assembling Vent Pipes
Canadian Installations
The venting system must be installed in accordance
with the current CSA-B149.1 installation code.
USA Installations
The venting system must conform to local codes and/or
the current National Fuel Code ANSI Z223.1/NFPA 54.
Only venting components manufactured by CFM Cor-
poration may be used in Direct Vent systems.
Flex Vent Pipes
Before joining the flex vent pipe to the unit, apply a
bead of high temperature sealant* (provided) to the 4”
pipe exiting the fireplace. Secure flex vent piep in place
with a hose clamp (provided).
*Be sure the flex pipe overlaps at least 1” (25mm) onto
the collars of the fireplace and termination. If the ter-
mination has an internal bead, be sure to overlap and
secure 1” (25 mm) past the bead.
* Be sure the vent is actually crushed before proceed-
ing. Apply a tug to be sure the vent will not slip off the
collars.
Repeat process with 7” flex vent pipe. The same proce-
dure must be performed on the vent side.
FP1471
flex vent
Apply High Temperature
Sealant
Hose Clamp
FP1471
Fig. 17 Apply high temperature sealant to 4” and 7” pipes.
Outside Corner
Inside Corner
Termination Clearances
Termination clearances for buildings with combustible and noncombustible exteriors.
G =
Combustible
6" (152 mm)
Noncombustible
2" (51 mm)
F =
Combustible
6" (152 mm)
Noncombustible
2" (51 mm)
G
Balcony -
with no side wall
M =
Combustible &
Noncombustible
12" (305 mm)
M
Balcony -
with perpendicular side wall
M = 24" (610 mm)
P = 20” (508 mm)
M
F
Alcove Applications*
C
D
C
E
V
V
Combustible &
Noncombustible
V
V
V
E = Min. 6” (152 mm) for
non-vinyl sidewalls
Min. 12” (305 mm) for
vinyl sidewalls
O = 8’ (2.4 m) Min.
O
P
584-15
No.
of Caps DMin. CMax.
1 3’ (914 mm) 2 x DActual
2 6’ (1.8 m) 1 x DActual
3 9’ (2.7 m) 2/3 x DActual
4 12’ (3.7 m) 1/2 x DActual
DMin. = # of Termination caps x 3
CMax. = (2 / # termination caps) x DActual
*NOTE: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions
specified for vinyl or non-vinyl siding and soffits. 1. There must be a 3’ (914 mm) minimum between termination caps. 2. All
mechanical air intakes within 10’ (1 m) of a termination cap must be a minimum of 3’ (914 mm) below the termination cap. 3. All
gravity air intakes within 3’ (914 mm) of a termination cap must be a minimum of 1’ (305 mm) below the termination cap.

14
DVB4136 Direct Vent Gas Fireplace
20012322
Twist Lock Pipes
When using twist lock pipe it is not necessary to use
sealant on the joints. The only areas of the venting
system that need to be sealed with high temperature
silicone sealant are the sliding joints of any telescopic
vent section used in the system.
To join twist lock pipes together, simply align the beads
of the male end with the grooves of the female end,
twisting the pipe until the flange on the female end
contacts external flange on the male end. It is recom-
mended that you secure the joints with three (3) sheet
metal screws, however, this is not mandatory with twist
lock pipe. (Fig. 18)
To make it easier to assembly the joints, we suggest
putting a lubricant (Vaseline or similar) on the male end
of the twist lock pipe prior to assembly.
TWL100
Twist Lock Pipe
3/12/99 djt
Male End Female End
Screw Holes TWL100
Fig. 18 Twist-lock pipe joints.
How to Use the Vent Graph
The Vent Graph should be read in conjunction with the
following vent installation instructions to determine the
relationship between the vertical and horizontal dimen-
sions of the vent system.
1. Determine the height of the center of the horizontal
vent pipe exiting through the outer wall. Using this
dimension on the Sidewall Vent Graph (Fig. 19),
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 A:
If the vertical dimension from the floor of the unit is 11’
(3.4 m) the horizontal run to the face of the outer wall
must not exceed 14’ (4.3 m).
EXAMPLE B:
If the vertical dimension from the floor of the unit is 7’
(2.1 m), the horizontal run to the face of the outer wall
must not exceed 8¹⁄₂’ (2.6 m).
NOTE: The DVB4136 fireplace is shipped with an air
deflector located on the base pan under the firebox. If
the fireplace is set up with an extended vent configu-
ration (exceeding a 2-foot (610 mm) rise), it may be
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
eg: A
eg: B
Horizontal dimension from the outside face of the
wall to the center of the fireplace vent flange
Vertical dimension form the floor of the unit to
the center of the horizontal vent pipe
Fig. 19 Sidewall venting graph. (Dimensions in feet)
Refer to Page 21 for venting requirements for snor-
kels.
necessary to install the air deflector by removing the
two (2) screws securing the log support to the back
of the fireplace. Position the air deflector between the
rear log support and firebox back. (Fig. 20) Be sure the
deflector is installed according to Figure 20. Tighten the
two screws that were removed earlier. Install the logs
and replace the glass door. Installation of air deflector
is complete. Be sure there is no lifting or ghosting of the
flame.



Air Deflector
Ports
Firebox Back
FP1851
Fig. 20 Air deflector.

15
DVB4136 Direct Vent Gas Fireplace
20012322
VO584-100
Vent Opening
2/99 djt
Vent Opening for Combustible Walls
9³⁄₈”
(240 mm)
10³⁄₈”
(265 mm)
Fireplace Hearth Framing Detail
Opening for Noncombustible Wall
7¹⁄₂”
(190 mm)
Fireplace Hearth VO584-100
Fig. 23 Locate vent opening on wall.
ZCS101 
Zero Clearance Sleeve
3/11/99 djt
Adjustable Zero
Clearance Sleeve
Max. Length
12” (305 mm)
#8 Screws (2)
Firestop
#8 Screws
(2)
Adjustable Zero
Clearance Sleeve
#8 Screws
(2)
ZCS101
Fig. 24 Adjustable zero clearance sleeve.
FP836
Rear Vent-Top View
11/21/98
Rear Vent Top View, Corner Installation FP836
Fig. 22 Rear vent application, one 45° elbow.
20”
(508 mm)
Max.
45°
20”
(508 mm)
Max.
45°
DVR584-600
Rear vent no elbows
2/99 djt
20” (508 mm)
Max.
DVR584-600
Fig. 21 Rear vent application, no elbows.
Rear Vent Top View
Rear Wall Vent Application
When installed as a rear vent unit this appliance may be
vented directly to a termination located on the rear wall
behind the appliance.
• Only CFM Corporation venting components are
approved to be used in these applications (Refer to
‘Venting Components’ listed for different installation
requirements).
• The maximum horizontal distance between the rear
of the appliance (or end of the transition elbow in a
corner application) and the outside face of the rear
wall is 20” (508 mm). (Fig. 21, 22)
• Only one 45° elbow is allowed in these installations.
• Minimum clearances between vent pipe and com-
bustible materials are as follows:
Top - 2” (51 mm)
Sides - 1” (25 mm)
Bottom - 1” (25 mm)
Rear Wall Vent Installation
Twist Lock Pipe
Step 1
Locate and cut the vent opening in the wall.
For combustible walls first frame in opening. (Fig. 23)
NOTE: When using flex vent, the opening will have to
be measured according to the 1” (25 mm) rise in 24”
(610 mm) vertical run.
Combustible Walls: Cut a 10³⁄₈”H x 9³⁄₈” W (265 mm
x 240 mm) hole through the exterior wall and frame as
shown. (Fig. 23)
Noncombustible Walls: Hole opening should be 7¹⁄₂”
(191 mm) diameter.
Zero clearance sleeve is only required for
combustible walls.
Step 2
Measure wall thickness and cut zero clearance sleeve
parts to proper length (Maximum 12” / 305 mm). As-
semble sleeve to its maximum opening (10³⁄₈” x 9³₈”)
and attach to firestop assembly. (Fig. 24)
Step 3
Measure the horizontal length requirement for the vent-
ing including a 2” (51 mm) overlap, i.e. from the elbow
to the outside wall face plus 2” (51 mm). (Fig. 21, 22)

16
DVB4136 Direct Vent Gas Fireplace
20012322
Step 4
Install the 4” (102 mm) vent to the appliance collar and
secure with 3 sheet metal screws. Install the 7” (178
mm) vent pipe to the appliance collar and secure with 3
sheet metal screws. It is not necessary to seal this con-
nection. If a 45° elbow is being used attach the elbow
to the appliance in the same manner then attach the
venting to the elbow.
It is critical that there is no downward
slope away from the appliance when con-
necting the vent or elbow.
Step 5
Guide the venting through the vent hole as you place
the appliance in its installed position. Guide the 4”
(102 mm) and 7” (178 mm) collar of the vent termina-
tion into the outer ends of the venting. Do not force
the termination. If the vent pipes do not align with the
termination, remove and realign the venting at the appli-
ance flue collars. (Fig. 25) Attach the termination to the
wall as outlined in the instruction sheet supplied with
the termination.
FP1005
Side View Vent Termination
1/25/00 djt
Finished Wall
Vent
Termination
FP1005
Fig. 25 Side view of final unit location.
Rear Wall Vent Installations -
Flex Vent Pipe
Follow Steps 1 and 2 on Page 15.
Step 3
Install the 4” (102 mm) flex vent pipe to the appliance
collars described in “General Information Assembling
Vent Pipes”, Page 12. If the installation requires a 45°
angle, grasp the vent pipe close to the appliance collar
and bend to 45°. DO NOT exceed 45°. (Fig. 26)
Install the 7” vent pipe in the same manner as Step 2.
NOTE: There must be a 1/2” (13 mm) rise in a 12”
(305 mm) length of flex vent.
FP1473
corner flex install
4/04 djt
Termination
Flex Section
Appliance Collars
FP1473
Fig. 26 Grasp the vent pipe close to the collar and bend to
45° angle. Do not exceed 45°.
Step 4
Assemble the flex vent to the collars on the termination
as you did on the appliance.
FP1472
rise in length
4/04 djt
FP1472
Fig. 27 There must be a 1/2” rise per foot length.
Rise
Vertical Sidewall Application
Since it is very important that the venting system
maintain its balance between the combustion air
intake and the flue gas exhaust, certain limitations
as to vent configurations apply and must be strictly
adhered to.
The Vent Graph, showing the relationship between ver-
tical and horizontal side wall venting, will help to deter-
mine the various dimensions allowable.
Minimum clearance between vent pipes and com-
bustible materials is one inch (25 mm) on top, bot-
tom and sides unless otherwise noted.
When vent termination exits through foundations less
than 20” (508 mm) below siding outcrop, the vent pipe
must flush up with the siding.
It is best to locate the fireplace in such a way that mini-
mizes 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.
Horizontal plane means no vertical rise exists on this
portion of the vent assembly.

17
DVB4136 Direct Vent Gas Fireplace
20012322
3 x 90°
Elbows
3 x 90°
Elbows
FP1176
Fig. 28 Maximum three (3) 90° elbows per installation.
• The maximum number of elbow degrees in a system
is 270°. (Fig. 32)
Example: Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total angular variation = 270°
Max 20"
Max 20"
36"
(914mm)
Max.
36"
(914mm)
Max.
FP1177
Fig. 29 Maximum horizontal run with no rise.
7'6"
(2.3m)
AB
A + B = 17' (Max.)
(5.2m)
FP1178
Fig. 30 Horizontal run reduction.
V584-201
Horizontal Run
2/99 djt
A10’
(3 m)
7’
(2.1 m)
8’
(2.4 m)
V584-201
B
Fig. 31 Maximum vent run with elbows.
1
2
3
4
1
2
3
4
1 + 2 + 3 + 4 = 270°
FP1180
Fig. 32 Maximum elbow usage.
When installing the appliance as a rear
vent unit, the 90° or 45° Transition Elbow
attached directly to the rear of the unit is
NOT INCLUDED in the following criteria
and calculations, and unless specifically
mentioned should be ignored when calcu-
lating venting layouts.
• The maximum number of 90° elbows per side wall
installation is three (3). (Fig. 27)
• 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). (Fig.
28)
• If a 90° elbow is used in the horizontal vent run
(level height maintained) the horizontal vent length
is reduced by 36” (914 mm). (Fig. 29, 30) This does
not apply if the 90° elbows are used to increase or
redirect a vertical rise. (Fig. 28)
Example: According to the vent graph (Page 15) the
maximum horizontal vent length in a system with a 7¹⁄₂’
(2.3 m) rise is 20’ (6 m) and if a 90° elbow is required in
the horizontal vent it must be reduced to 17’ (5.2 m).
In Figures 30 & 31, dimension A plus B must not be
greater than 17’ (5.2m)
• The maximum number of 45° elbows permitted per
installation is six (6). These elbows can be installed
in either the vertical or horizontal run.
• For each 45° elbow installed in the horizontal run,
the length of the horizontal run MUST be reduced by
18” (457 mm). This does not apply if the 45° elbows
are installed on the vertical part of the vent system.

18
DVB4136 Direct Vent Gas Fireplace
20012322
Vertical Sidewall Installation
Twist Lock Pipe
Step 1
Locate vent opening on the wall. It may be necessary
to first position the fireplace and measure to obtain hole
location. Depending on whether the wall is combustible
or noncombustible, cut opening to size. (Fig. 33) (For
combustible walls first frame in opening.)
NOTE: When using flex vent, the opening will have to
be measured according to the 1/2” (13 mm) rise in 12”
(305 mm) vent run.
Combustible Walls: Cut a 9³⁄₈”H x 9³⁄₈”W (240 mm x
240 mm) hole through the exterior wall and frame as
shown. (Fig. 33)
Noncombustible Walls: Hole opening must be 7¹⁄₂”
(191 mm) in diameter.
VO584-100
Vent Opening
2/99 djt
Vent Opening for Combustible Walls
9³⁄₈”
(240 mm)
9³⁄₈”
(240 mm)
Fireplace Hearth Framing Detail
Opening for Noncombustible Wall
7¹⁄₂”
(190 mm)
Fireplace Hearth VO584-100
Fig. 33 Locate vent opening on wall.
ZCS101 
Zero Clearance Sleeve
3/11/99 djt
Adjustable Zero
Clearance Sleeve
Max. Length
12” (305 mm)
#8 Screws (2)
Firestop
#8 Screws
(2)
Adjustable Zero
Clearance Sleeve
#8 Screws
(2)
ZCS101
Fig. 34 Adjustable zero clearance sleeve.
Step 2
Measure wall thickness and cut zero clearance sleeve
parts to proper length (MAXIMUM 12” / 305 mm).
Assemble sleeve and attach to firestop with #8 sheet
metal screws (supplied). Install firestop assembly. (Fig.
34)
Zero clearance sleeve is only required for
combustible walls.
Step 3
Place fireplace into position. Measure the vertical height
(X) required from the base of the flue collars to the cen-
ter of the wall opening. (Fig. 35)
Step 4
Apply a band of silicone to the inner and outer flue
collars of the fireplace and using appropriate length of
pipe section(s) attach to fireplace with three (3) screws.
Follow with the installation of the inner and outer elbow,
again secure joints with three (3) sheet metal screws.
Wipe off any excess high temperature sealant.
Step 5
Measure the horizontal length requirement including a
2” (51mm) overlap, i.e. from the elbow to the outside
wall face plus 2” (51mm) (or the distance required if
installing a second 90° elbow). (Fig. 36)
Always install horizontal venting on a level
plane.
Step 6
Use appropriate length of pipe sections - telescopic or
fixed - and install. The sections which go through the
wall are packaged with the starter kit, and can be cut to
suit if necessary.
Sealing vent pipe and firestop gaps with high tem-
perature sealant will restrict cold air being drawn in
around fireplace.
XX
FP1181
Fig. 35 Vertical height requirements.

19
DVB4136 Direct Vent Gas Fireplace
20012322
Step 7
Apply high temperature sealant to 4” (102 mm) and
7” (178 mm) collars or the termination one inch away
from crimped end. Guide the vent terminations 4” and
7” collard into their respective vent pipes. Double check
that the vent pipes overlap the collars by 2” (51 mm).
Secure the termination to the wall with screws provided
and caulk around the wall plate to weatherproof. As an
alternative to screwing the termination directly to the
wall, you may also use expanding plugs or an approved
exterior construction adhesive. You may also attach the
termination with screws through the inner body into the
4” vent pipe, however for this method, you must extend
the 4” pipe approximately 6” (152 mm) beyond the outer
face of the wall.
Support horizontal pipes every 36”
(914 mm) with metal pipe straps.
X
X
FP1182
Fig. 36 Horizontal length requirement.
Vertical Sidewall Installation
Flex Vent Pipe
NOTE: The 40” (1016 mm) flex vent is used for 90° off
the top of the unit then out the back wall.
Follow Step 1 and 2 on Page 19.
Step 3
Install the four (4) spacer springs on the 4” flex vent
pipe. When installing the spacer springs around the 4”
pipe, stretch the spring to approximately 15” (381 mm),
wrap the spring around the pipe and interlock the ends
of the spacer spring approximately 2” (51 mm). Mea-
sure 6³⁄₄” (172 mm) from the end of the pipe. Place the
next spring 5” (127 mm) from the previously installed
spring. Place the next spring 6” (152 mm) from the last
spring. Finally place the last spring 12” (305 mm) from
the last spring installed. (Fig. 37)
12"
(305mm)
6"
(152mm)
5"
(127mm)
6³⁄₄"
(172mm)
FP1474
spacer springs
4/04 djt
4” Flex Vent Pipe
Spacer Spring
FP1474
Fig. 37 Install spacer springs.
Step 4
Install the 4” (102 mm) flex vent pipe to the appliance
collar as described on Page 14. Secure the end with the
first spring 6³⁄₄” (172 mm) from the flex pipe end to the
unit.
Step 5
Slide the 7” (178 mm) flex vent pipe over the 4” flex
vent pipe and secure the 7” collar as described on Page
14.
Step 6
Bend the flex pipe horizontal so the bottom of the hori-
zontal pipe measure 6¹⁄₂” (165 mm) from the top of the
unit immediately after the 90° formation. (Fig. 38) Be
sure to follow the 1/2” (13 mm) rise in a 12” (305 mm)
horizontal run rule.
Step 7
Install the 4” flex then 7” flex to the termination.
6¹⁄₂" (165mm)
FP1475
flex 90 bend
4/04 djt
FP1475
Fig. 38 Bend flex vent at 90° so horizontal portion is 6¹⁄₂”
(165 mm) off top of unit.

20
DVB4136 Direct Vent Gas Fireplace
20012322
Below Grade Installation
When it is not possible to meet the required vent ter-
minal clearances of 12” (305 mm) above grade level, a
snorkel kit is recommended. It allows installation depth
down to 7” (178 mm) below grade level. The 7” (178
mm) is measured from the center of the horizontal vent
pipe as it penetrates through the wall.
Ensure the sidewall venting clearances are ob-
served. If venting system is installed below ground,
we recommend a window well with adequate and
proper drainage to be installed around the termina-
tion area.
If installing a snorkel, a minimum 24” (610 mm) vertical
rise is necessary. The maximum horizontal run with the
24” vertical pipe is 36” (914 mm). This measurement
is taken from the collar of the fireplace (or transition
elbow) to the face of the exterior wall. See the Sidewall
Venting Graph for extended horizontal run if the vertical
exceeds 24” (610 mm).
1. Establish vent hole through the wall (Page 19, Fig. 33)
2. Remove soil to a depth of approximately 16” (406 mm)
below base of snorkel. Install drain pipe. Install win-
dow well (not supplied). Refill hole with 12” (305 mm)
of coarse gravel leaving a clearance of approximately
4” (102 mm) below snorkel. (Fig. 39)
3. Install vent system.
4. Ensure a watertight seal is made around the vent pipe
coming through the wall.
5. Apply high temperature sealant caulking (supplied)
around the 4” and 7” snorkel collars.
6. Slide the snorkel into the vent pipes and secure to the
wall.
7. Level the soil so as to maintain a 4” (102 mm) clear-
ance below snorkel. (Fig. 39)
BG402a
Top Vent
Below grade installation
1/26/00 djt
Firestop
7” Pipe
7TDVSNORK
(Snorkel)
4” (102mm)
Clearance
Min.
Window
Well
Gravel
Drain
BG402a
Fig. 39 Below grade installation.
Zero Clearance
Sleeve
(if required)
*A minimum of 24” (610 mm)
vertical pipe must be installed
when using the 7TDVSNORK
Kit.
24” (610mm)
Minimum*
Screws
Foundation Wall
Do not back fill around snorkel.
A clearance of at least 4” must be main-
tained between the snorkel and the soil.
If the foundation is recessed, use recess brackets (not
supplied) for securing lower portion of the snorkel. Fas-
ten brackets to wall first, then secure to snorkel with self
drilling #8 x 1/2 sheet metal screws. It will be necessary
to extend vent pipes out as far as the protruding wall
face. (Fig. 40)
BG401
Snorkel
2/10/99 djt
Snorkel
Wall Screws
Foundation
Recess
Watertight
Seal Around
PIpe
Sheet Metal Screws
BG401
Fig. 40 Snorkel installation, recessed foundation.
Vertical Through-the-Roof Application
This gas fireplace has been approved for:
• Vertical installations up to 40’ (12 m) in height. Up
to a 10’ (3 m) horizontal vent run can be installed
within the vent system using a maximum of two 90°
elbows. (Fig. 41)
• Up to two 45° elbows may be used within the hori-
zontal run. For each 45° elbow used on the horizon-
tal plane, the maximum horizontal length must be
reduced by 18” (450 mm).
Example: Maximum horizontal length:
No elbows = 10’ (3 m)
1 x 45° elbow = 8.5’ (2.6 m)
2 x 45° elbows = 7’ (2.1 m)
• A minimum of an 8’ (2.5 m) vertical rise is required.
• Two sets of 45° elbow offsets may be used within the
vertical sections. From 0 to a maximum of 8’ (2.5 m)
of vent pipe can be used between elbows. (Fig. 41)
• 7DVCS supports offsets. (Fig. 44) This application
will require that you first determine the roof pitch
and use the appropriate starter kit. (Refer to Venting
Components List)
• The maximum angular variation allowed in the sys-
tem is 270°. (Fig. 42)
• The minimum height of the vent above the highest
point of penetration through the roof is 2’ (610 mm).
(Fig. 45) Refer to letter N, Page 13.