Vermont Casting DVBR36, DVBR42 User Manual
Builder Direct Vent
CER TIFI ED
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Models: DVBR36
DVBR42
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 YOUR 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
Homeowner’s Installation and
Operating Manual
the gas suppliers 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.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
20000584 1/07 Rev. 16
DVBR Series Direct Vent Gas Fireplace
Table of Contents
Please Read the Installation & Operating Instructions Before Using Appliance.
Thank you and congratulations on the 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 & Operating Instructions
General Information ....................................................................................................................3
Fireplace Dimensions .................................................................................................................
Locating Your Fireplace ..............................................................................................................
Clearance to Combustibles .........................................................................................................
Mantels ......................................................................................................................................
Mantel Chart ...............................................................................................................................6
Hearth ......................................................................................................................................
Framing and Finishing ................................................................................................................
Final Finishing .............................................................................................................................
Gas Specifications ......................................................................................................................
Gas Inlet & Manifold Pressures ..................................................................................................7
High Elevations ...........................................................................................................................
Gas Line Installation ...................................................................................................................
Remote Switch Installation ..........................................................................................................
EB-1 Electrical Box .....................................................................................................................
Optional Top Vent Application .....................................................................................................8
General Venting Information
General Venting ........................................................................................................................10
General Venting Information - Termination Location .................................................................11
General Information Assembling Vent Pipes .............................................................................12
How to Use the Vent Graph ......................................................................................................13
Rear Wall Vent Applications & Installation ................................................................................
Vertical Sidwall Applications & Installation ................................................................................
Below Grade Installation ...........................................................................................................
DVBR36 Vertical Installation Baffle Adjustment ........................................................................
Vertical Through-the-Roof Applications & Installation ............................................................... 20
Venting Components .................................................................................................................
Operating Instructions
Glass Information ......................................................................................................................
Glass Frame Removal ..............................................................................................................
Glass Cleaning .......................................................................................................................... 23
Replacement of Ceramic Hearth Panels ...................................................................................
Installation of Logs ....................................................................................................................
Ember Material Placement ........................................................................................................
Lava Rock .................................................................................................................................
Flame & Temperature Adjustment .............................................................................................25
Flame Characteristics ...............................................................................................................
Inspecting the Venting System ..................................................................................................
Lighting & Operating Instructions ..............................................................................................
Troubleshooting ........................................................................................................................
Fuel Conversion Instructions ....................................................................................................30
Maintenance
Cleaning the Standing Pilot Control System .............................................................................
Replacement Parts ..............................................................................................................................33
Optional Accessories
FK-12 Fan Kit ............................................................................................................................
Remote Controls .......................................................................................................................
Ceramic Refractory Panels .......................................................................................................
Decorative Glass Panels ...........................................................................................................
Decorative Frame Trims ............................................................................................................
Warranty ...............................................................................................................................................39
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20000584
Installation Instructions
This gas appliance should be installed by a qualified installer 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.
In 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 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. Children should be carefully supervised when in the same
room as your fireplace.
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.
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 combustion
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.
DVBR Series Direct Vent Gas Fireplace
WARNING: Check with your electronics manufacturer
before installing a television or other electronic device above this fireplace.
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 indicated
on the rating plate. This appliance is not convertible for
use with other gases, unless a certified kit is used.
Th e DV B R ha s bee n app roved for mobil e hom e
installations.
Proposition 65 Warning: Fuels used in gas, wood-
burning or oil fired appliances, and the products of
combustion of such fuels, contain chemicals known to
the State of California to cause cancer, birth defects
and other reproductive harm.
California Health & 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 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.
-
-
20000584
3
DVBR Series Direct Vent Gas Fireplace
P - Rough Opening Width
Rough
Opening
Height
Rough
Opening
Depth
S
S
T
5/8” (16 mm)
R
Q
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H
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M
N
5/8” (16 mm)
E
D
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O
B
A
C
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Gas Line
Access
"
Electrical
Access
C
L
J
K
"
"
Fireplace Dimensions (Installed as Top Vent)
Fig. 2 Fireplace specifications and framing dimensions.
Ref. DVBR36 DVBR42
A 40” (1016 mm) 46” (1168 mm)
B 36” (614 mm) 36” (914 mm)
C 36” (914 mm) 42” (1067 mm)
D 23¹⁄₄” (591 mm) 24¹⁄₄” (616 mm)
E 6³⁄₈” (162 mm) 6³⁄₈” (162 mm)
F 6³⁄₈” (162 mm) 5³⁄₈” (137 mm)
G 20” (508 mm) 20” (508 mm)
H 6³⁄₄” (172 mm) 6³⁄₄” (172 mm)
I 22” (559 mm) 28” (711 mm)
J 13¹⁄₄” (337 mm) 13¹⁄₄” (337 mm)
K 3” (76 mm) 3” (76 mm)
L 6¹⁄₂” (165 mm) 6¹⁄₂” (165 mm)
M 4” (102 mm) Dia. 4” (102 mm) Dia.
N 7” (178 mm) Dial. 7” (178 mm) Dia.
Framing Dimensions
O 40¹⁄₂” (1029 mm) 40¹⁄₂” (1029 mm)
P 41” (1041 mm) 47” (1194 mm)
R 64³⁄₄” (1645 mm) 69¹⁄₂” (1765 mm)
S 45³⁄₄” (1162 mm) 49” (1245 mm)
T 32³⁄₈” (822 mm) 35¹⁄₄” (895 mm)
Q 20¹⁄₂” (521 mm) 20¹⁄₂” (521 mm)
4
20000584
DVBR Series Direct Vent Gas Fireplace
O - Rough Opening Width
Rough
Opening
Height
Rough
Opening
Depth
R
R
S
5/8” (16 mm)
Q
P
G
H
5/8” (16 mm)
E
D
F
N
B
A
C
J
K
Gas Line
Access
"
Electrical
Access
I
J
"
"
L
M
Fireplace Dimensions (Installed as Rear Vent)
Fig. 3 Fireplace specifications and framing dimensions.
Ref. DVBR36 DVBR42
A 40” (1016 mm) 46” (1168 mm)
B 36” (614 mm) 36” (914 mm)
C 36” (914 mm) 42” (1067 mm)
D 23¹⁄₄” (591 mm) 23¹⁄₄” (591 mm)
E 6³⁄₈” (162 mm) 6³⁄₈” (162 mm)
F 6³⁄₈” (162 mm) 5³⁄₈” (137 mm)
G 20” (508 mm) 20” (508 mm)
H 22” (559 mm) 28” (711 mm)
I 13¹⁄₄” (337 mm) 13¹⁄₄” (337 mm)
J 3” (76 mm) 3” (76 mm)
K 6¹⁄₂” (165 mm) 6¹⁄₂” (165 mm)
L 29¹⁄₂” (749 mm) 29¹⁄₂” (749 mm)
M 30¹⁄₄” (768 mm) 30¹⁄₄” (768 mm)
Framing Dimensions
N 40¹⁄₂” (1029 mm) 40¹⁄₂” (1029 mm)
O 41” (1041 mm) 47” (1194 mm)
P 20¹⁄₂” (521 mm) 20¹⁄₂” (521 mm)
Q 64
R 45³⁄₄” (1162 mm) 49” (1245 mm)
S 32³⁄₈” (822 mm) 35¹⁄₄” (895 mm)
³⁄₄” (1645 mm) 69¹⁄₂” (1765 mm)
20000584
5
DVBR Series Direct Vent Gas Fireplace
J
F
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Mantel
Leg
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M
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A B C
D
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W
X
Y
Z
Fireplace
Y
E
A
B
C
D
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Y
B
X
Locating Your Fireplace
LU584-1
Fig. 1 Locating Gas Fireplace
A) Flat on wall B) Cross corner C) **Island
D) *Room divider E) *Flat on wall corner F) Chase installation
Y) 6” minimum
Note (Fig. 1):
** Island (C) and Room Divider (D) installation is possible as long as
the horizontal portion of the vent system (X) does not exceed 20’ (610
cm). 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 0” (0mm) clearance must be
maintained from the perpendicular wall and the front of the fireplace.
Top of Combustion
Chamber
Bottom of Door Trim
CFM146a
Mantel Chart
Mantel Mantel from Top
Ref. Shelf Depth Ref. of Comb. Chamber
V 14” (356 mm) A 18” (457 mm)
W 12” (305 mm) B 16” (406 mm)
X 10” (254 mm) C 14” (356 mm)
Y 8” (203 mm) D 12” (305 mm)
Z 1
Fig. 4a Combustible mantel minimum installation.
¹⁄₂” (38 mm) E 8” (203 mm)
Clearance to Combustibles
Appliance
Top ......................................................... 0” (0 mm)
Bottom ..................................................... 0” (0 mm)
Side ......................................................... 0” (0 mm)
Back ........................................................ 0” (0 mm)
Perpendicular Sidewall ........................... 0” (0 mm)
Top of unit to ceiling .......................... 36” (914 mm)
Front of unit to combustibles ............. 36” (914 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 and 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.
6
Black
Surround Face
CFM164a
Side of
Combustion Chamber
CFM170
Mantel Leg Mantel Leg from Side
Ref. Depth Ref. of Combusion Opening
F 14” (356 mm) K 14” (356 mm)
G 12” (305 mm) L 12” (305 mm)
H 10” (254 mm) M 10” (254 mm)
I 8” (203 mm) N 8” (203 mm)
J 4” (102 mm) O 3
¹⁄₂” (89 mm)
Fig. 4b Combustible mantel minimum installation.
20000584
DVBR Series Direct Vent Gas Fireplace
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 noninsulated exterior wall or chase, it is
mandatory that the outer walls be insulated
to conform to applicable insulation codes.
Framing and Finishing
Check fireplace to make sure it is levelled
and properly positioned.
NOTE: If the optional Metro Face Kit (DVBR36 only)
is to be installed, the fireplace may be placed on a
4” (102 mm) raised platform. Raising the fireplace
will give the best aestethic appearance but is not
required.
To mount the appliance:
1. Choose the location.
2. Nailing flanges are supplied with the fireplace (found
on the fireplace hearth). To level the box and secure
it firmly in place, remove the nailing flanges from
the hearth and install at the sides of the fireplace as
shown in Figure 5.
Nail Top
Standoffs
Gas Specifications
Max. Min.
Gas Input Input
Model Fuel Control B.T.U.H B.T.U.H.
DVBR36RN Natural Gas Millivolt Hi/Lo 24,000 16,000
DVBR36RP Propane Millivolt Hi/Lo 24,000 17,500
DVBR42RN Natural Gas Millivolt Hi/Lo 27,000 18,000
DVBR42RP Propane Millivolt Hi/Lo 27,000 19,700
Gas Inlet & Manifold Pressures
Natural LP
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.
DVBR36 / DVBR42
Certified to
ANSI Z21.88-2005 / CSA 2.33-2005
Vented Gas Fireplace Heater
Units: GFCN3J0, GFCN3M0
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
Nail Sidenailing
Flanges
FP549
Fig. 5 Nailing flanges.
Final Finishing
Noncombustible materials such as brick and tile can be
extended over the black face of the unit (Do not cover
the glass door.) If a Trim Kit is to be installed, brick and
tile will have to be installed flush with the side of this
appliance.
20000584
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 convenient locations to allow for the gas pipe installation
and testing of any gas connection.
The gas line connection can be made with 3/8” copper
tubing, 1/2” rigid pipe or an approved flex connector.
Since some municipalities have additional local codes,
it is always best to consult your local authority and the
CSA-B149.1 installation codes. For US installations
consult the current National Fuel Gas Code, ANSI
Z223.1/NFPA 54.
7
DVBR Series Direct Vent Gas Fireplace
OUTSIDE
ELECTRICAL BOX
INSIDE
FRONT OF UNIT
1/2” Gas Supply
1/2” NPT X 1/2” Flare Shut-off Valve
3/8” Flex line
(from valve)
FP297A
Fig. 6 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 provide 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 the gas line can be easily disconnected for
burner or fan servicing. (Fig. 6) See the gas specifications for pressure details and ratings.
Remote Switch Installation
Do not wire the remote ON/OFF wall switch
for this gas appliance into a 120v power
supply.
EB-1 Electrical Box
The fireplace, when installed, must be electrically connected and grounded in accordance with local codes or, in the absence
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.
EB1 (Receptacle) Hook-Up
1. Remove contents from plastic bag. Remove knockout in center of electrical box. Remove coverplate
from fireplace and knockout. Insert connector
through coverplate, plate and box. Screw nut on
connector with screws provided (2) to secure the
coverplate to the plate.
2. Connect black positive wire to brass screw (polar
ized side) of receptacle. The white wire is connected
to chrome screw. The ground wire is connected to
green ground screw of the receptacle. Fit receptacle
into electrical box.
3. Screw cover plate provided to electrical box.
4. Secure receptacle to fireplace.
-
1. Thread wire through the electrical knockout located
on either side of fireplace. Do not cut wire or insula
tion on metal edges. Ensure that wire is protected.
Run the other end to a conveniently located wall
receptacle box.
2. Attach wire to switch and install switch into receptacle box. Attach cover plate to switch.
3. Connect wiring to gas valve. (Fig. 7)
Fig. 7 Remote switch wiring diagram for R models.
Thermopile
Gas Valve
Switch
8
-
FP580
Fig. 9 EB-1 receptacle.
W584-9
20000584
DVBR Series Direct Vent Gas Fireplace
Optional Top Vent Application
The DVBR36/42 fireplace is shipped as a rear vent unit.
If the layout requires a top vent, convert the unit following the steps below.
DVBR36
1. Remove the eight (8) screws securing outer collar
adapter to fireplace. (Be careful not to damage insulation.) (Fig. 10)
2. Set outer collar adapter aside.
Remove
Screws (4)
Outer Collar
Adapter
Flue Pipe
Rear View
6. Secure flue cover to back of flue outlet. Be sure to
replace gasket. (Fig. 12)
7. Install flue pipe to top of unit with four (4) screws. Be
sure to replace gasket. (Fig. 12)
8. Set insulation in back of unit foil side down.
9. Secure outer collar adapter to unit with the round
collar on top, secure with eight (8) screws.
NOTE: Be sure not to damage any gasket material.
Flue Pipe
Flue
Pipe
Replace
Screws
(4)
Foil Side
Insulation
Fig. 12 Replace flue cover and flue pipe.
Replace
Screws (4)
DVT584-604
Remove Screws (4)
DVT584-602
Fig. 10 Remove screws from outer collar adapter.
3. Remove insulation on top of collector box. (Fig. 11)
4. Remove the four (4) screws securing flue cover to
top of unit and remove flue cover. (Fig. 11)
5. Remove the four (4) screws securing flue pipe to
back of unit. Remove flue pipe. (Fig. 11)
Insulation
Remove
Flue
Cover
Flue
Pipe
Remove Screws
(4)
Fig. 11 Remove flue cover and flue pipe.
Screws (4)
DVT584-603
DVT584-605
Fig. 13 Completed conversion.
20000584
9
DVBR Series Direct Vent Gas Fireplace
DVBR42
1. Remove the seven (7) screws securing the heat
shield cover plate to the fireplace. (Fig. a) Discard
the heat shield cover plate.
Remove Screws (7)
Heat Shield
Cover Plate
FP1542
Fig. a Remove screws securing heat shield cover plate. Discard cover plate.
2. Carefully remove the square piece of insulation
along the perforations. (Fig. b) Discard insulation.
3. Remove the eight (8) screws securing outer collar
adapter to fireplace. (Be careful not to damage insulation.) (Fig. 10)
Remove Insulation
FP1543
Fig. b Remove and discard insulation.
4. Set outer collar adapter aside.
5. Remove insulation on top of collector box. (Fig. 11)
6. Remove the four (4) screws securing flue cover to
top of unit and remove flue cover. (Fig. 11)
7. Remove the four (4) screws securing flue pipe to
back of unit. Remove flue pipe. (Fig. 11)
8. Secure flue cover to back of flue outlet. Be sure to
replace gasket. (Fig. 12)
9. Install flue pipe to top of unit with four (4) screws. Be
sure to replace gasket. (Fig. 12)
10. Set insulation in back of unit foil side down.
11. Secure outer collar adapter to unit with the round
collar on top, secure with eight (8) screws.
NOTE: Be sure not to damage any gasket material.
General Venting
Your fireplace is approved to be vented either through
the side wall, or vertical through the roof.
• Only CFM Corporation venting components specifically 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
1/2” (13 mm) per12” (305 mm).
There must not be any obstruction such as bushes,
garden sheds, fences, decks or utility buildings within
24” 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 termination area after snow falls, and clear to prevent accidental 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 observing the minimum clearances as shown on the following
page.
10
20000584
DVBR Series Direct Vent Gas Fireplace
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
INSIDE
CORNER DETAIL
V
A
G
N
N
CFM145a
General Venting Information - Termination Location
Canadian Installations1 US Installations
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 feet (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’
(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 appliances 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.
Fig. 14 Vent termination clearances.
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2
11
DVBR Series Direct Vent Gas Fireplace
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
*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.
Fig. 15 Termination clearances.
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 Corpo
ration may be used in Direct Vent systems.
General Information Assembling Vent Pipes
* Be sure the vent is actually crushed before proceeding. Apply a tug to be sure the vent will not slip off the
collars.
Repeat process with 7” flex vent pipe. The same procedure must be performed on the vent side.
-
No.
of Caps D
1 3’ (.9 mm) 2 x D
2 6’ (1.8 m) 1 x D
3 9’ (2.7 m) 2/3 x D
4 12’ (3.7 m) 1/2 x D
D
= # of Termination caps x 3
Min.
C
= (2 / # termination caps) x D
Max.
C
Min.
Apply High Temperature
Sealant
Max.
Actual
Actual
Actual
Actual
Actual
584-15
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 pipe 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 termination has an internal bead, be sure to overlap and
secure 1” (25 mm) past the bead.
12
Flex Vent Pipes
Hose Clamp
FP1471
Fig. 16 Apply high temperature sealant to 4” and 7” pipes.
20000584
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