Vermont Casting 36CDVTRN, 36CDVRRN User Manual
INSTALLER/CONSUMER
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CER TIF IED
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 the gas suppliers
instructions.
• If you cannot reach your gas
supplier call the fire department.
Builder Direct Vent
Models:
36CDVRRN (Rear Vent)
36CDVTRN (Top Vent)
Installation Instructions and
DO NOT STORE OR USE
Homeowner’s Manual
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.
20010175 6/06 Rev. 2
CDV Series Direct Vent Gas Fireplace
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 fully may result in a possible fire hazard and will void the warranty.
Installation & Operating Instructions
Important Curing/Burning Instructions .................................................................................................3
Locating Your Fireplace .......................................................................................................................3
Fireplace Dimensions ..........................................................................................................................4
Clearance to Combustibles .................................................................................................................
Mantels .............................................................................................................................................6
Hearth .............................................................................................................................................
Framing and Finishing .........................................................................................................................7
Hood Installation ..................................................................................................................................7
Final Finishing .....................................................................................................................................
Gas Specifications ...............................................................................................................................7
Gas Inlet and Manifold Pressures .......................................................................................................
High Elevations ....................................................................................................................................8
Gas Line Installation ............................................................................................................................8
Remote ON/OFF Switch ......................................................................................................................
120V Electrical Hook Up ......................................................................................................................
General Venting Information
General Venting ...................................................................................................................................9
General Venting Information-Termination Location ...........................................................................10
General Information Assembling Vent Pipes .....................................................................................11
36CDVR Venting - How to Use the Vent Graph ................................................................................
Rear Wall Venting Applications & Installation (Exterior outside wall 7” - 13” from rear of unit) ..........12
Rear Wall Vent Installations - 45° Flex Vent Pipe ..............................................................................
Rear Wall Vent Application (Exterior outside wall 20” - 32” from rear of unit) ....................................15
Vertical Sidewall Applications & Installation .......................................................................................
Below Grade Installation ....................................................................................................................18
Vertical Through-the-Roof Applications & Installation ........................................................................18
36CDVT Vertical Venting - How to Use the Vent Graph ....................................................................
Vertical Sidewall Applications & Installation .......................................................................................21
Below Grade Installations ..................................................................................................................
Vertical Through-the-Roof Applications & Installation ........................................................................24
Venting Components .........................................................................................................................27
Operating Instructions
Glass Information ..............................................................................................................................28
Louvre Removal ................................................................................................................................
Window Frame Assembly Removal ...................................................................................................28
Glass Cleaning ..................................................................................................................................
Logs ...........................................................................................................................................29
Flame & Temperature Adjustment .....................................................................................................29
Flame Characteristics ........................................................................................................................
Lighting and Operating Instructions ...................................................................................................30
Troubleshooting .................................................................................................................................
Fuel Conversion Instructions .............................................................................................................33
Maintenance
Cleaning the Standing Pilot Control System ......................................................................................34
Replacement Parts ...................................................................................................................................35
Optional Accessories
Fan Kits ...........................................................................................................................................37
Wiring Instructions .............................................................................................................................37
Remote Controls ................................................................................................................................37
Warranty .......................................................................................................................................................39
Energuide ....................................................................................................................................................40
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20010175
CDV Series Direct Vent Gas Fireplace
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Installation & Operating 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. For USA 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
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
WARNING: Check with your electronics manufacturer
before installing a television or other electronic device above this fireplace.
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
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.
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
PLEASE REVIEW 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 curing of the paint
and any undetected oil from 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 optional fan kit
has been installed, place the fan switch in the “OFF” position
during this time.
carpeting, bedding material, etc.
6. Control compartments, burners and air passages in this
Locating Your Fireplace
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 stockings or decorations be hung
on or around the fireplace.
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, the 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.
15. These units have been approved for bedroom use.
20010175
Fig. 1 Locate 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’ (6 m) with a minimum vertical of 4’ (122 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 6” (153 mm) clearance must be maintained from the perpendicular wall and the
front side edge of the fireplace.
Refer to (Y) in Figure 1.
IMPORTANT:
LU584-R
3
CDV Series Direct Vent Gas Fireplace
O
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X - Rough Opening Width
Rough
Opening
Height
Rough
Opening
Depth
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A
Y
B
K
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Q
Gas Line
Access
Gas Line
Access
Low Voltage
Electrical
Access
D
C
L
Centerline of
7" Collar
N
Low
Voltage
Access
P
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C
M
Fireplace Dimensions - Rear Vent
*
*
*
*
Fig. 2 Fireplace specifications and framing dimensions.
Ref. 36CDVR
A 35¹⁄₄” (895 mm)
B 35¹⁄₈” (892 mm)
C 32¹⁄₈” (816 mm)
D 33” (838 mm)
E 21¹⁄₈” (537 mm)
F 16⁵⁄₈” (422 mm)
G 25” (635 mm)
H 18¹⁄₂” (470 mm)
I 22” (559 mm)
J 3¹⁄₄” (83 mm)
K 2⁷⁄₈” (73 mm)
L 1³⁄₈” (35 mm)
M 14” (356 mm)
N 8¹⁄₂” (216 mm)
O 7³⁄₈” (187 mm)
P 1³⁄₈” (35 mm)
Q 3¹⁄₄” (83 mm)
R 7³⁄₈” (187 mm)
S 8¹⁄₂” (216 mm)
Framing Dimensions
T* 68¹⁄₄“ (1734 mm)
U* 48¹⁄₄“ (1226 mm)
V* 34¹⁄₈” (867 mm)
W 17¹⁄₈” (435 mm)
X 36¹⁄₄” (921 mm)
Y 35³⁄₈” (899 mm)
* Must be adhered to!
4
20010175
CDV Series Direct Vent Gas Fireplace
O
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X - Rough Opening Width
Rough
Opening
Height
Rough
Opening
Depth
U
U
V
T
W
G
J
E
A
Y
B
K
L
Q
Gas Line
Access
Gas Line
Access
Low Voltage
Electrical
Access
Electrical
Access
D
N
Low
Voltage
Access
P
R
S
C
M
H
Fireplace Dimensions - Top Vent
Fig. 2 Fireplace specifications and framing dimensions.
Ref. 36CDVT
A 35¹⁄₄” (895 mm)
B 35³⁄₄” (883 mm)
C 32¹⁄₈” (816 mm)
D 33” (838 mm)
E 21¹⁄₈” (537 mm)
F 16⁵⁄₈” (422 mm)
G 25” (635 mm)
H 8” (203 mm)
J 3¹⁄₄” (83 mm)
K 2⁷⁄₈” (73 mm)
L 1³⁄₈” (35 mm)
M 14” (356 mm)
N 8¹⁄₂” (216 mm)
O 7³⁄₈” (187 mm)
P 1³⁄₈” (35 mm)
Q 3¹⁄₄” (83 mm)
R 7³⁄₈” (187 mm)
S 8¹⁄₂” (216 mm)
Framing Dimensions
T 58³⁄₈“ (1483 mm)
U 41³⁄₈“ (1051 mm)
V 29¹⁄₈” (740 mm)
W 17¹⁄₈” (435 mm)
X 36¹⁄₄” (921 mm)
Y 35” (889 mm)
20010175
5
CDV Series Direct Vent Gas Fireplace
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Mantel
Leg
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A B C D E
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X
Y
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Fireplace
Clearance to Combustibles
Top of Unit to Ceiling ............................... 36” (914 mm)
Front of Unit to Combustibles .................. 36” (914 mm)
Appliance
Top .......................................................... 0” (0 mm)
Bottom ..................................................... 0” (0 mm)
Side ......................................................... 0” (0 mm)
Back ........................................................ 0” (0 mm)
Venting
Concentric sections of DV Vent
Top, bottom & sides .............................. 1” (25 mm)
NOTE: Hood must be permanently installed with
three (3) sheet metal screws supplied in fireplace.
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
Figs. 3a and 3b, and the following Mantel Charts.
The fitting of a bay window trim kit does not effect
the distances and reference points referred to in the
diagram and chart.
Noncombustible mantels and legs may be installed at
any height and width around the appliance.
When using paint or lacquer to finish the mantel, such
paint or lacquer must be heat resistant to prevent
discoloration.
Finish Wall
Black
Surround
Face
CFM164a
Side of
Combustion Chamber
CFM170
Mantel Mantel Leg FromSide
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)
Standoff
Noncombustible
Material
Hood
Top of Combustion
Chamber
Mantel Shelf or Mantel from Top of
Ref. Breast Plate Depth Ref. Combustion Chamber
V 10” (254 mm) A 17” (432 mm)
W 8” (203 mm) B 15” (381 mm)
X 6” (152 mm) C 13” (330 mm)
Y 4” (101 mm) D 11” (279 mm)
Z 2” (51 mm) E 9” (229 mm)
Fig. 3a Combustible mantel minimum installation.
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Mantel Chart
CFM146
Fig. 3b Combustible mantel leg minimum installation.
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-insulated exterior wall or chase,
it is mandatory that the outer walls
be insulated to conform to applicable
insulation codes.
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.
The CDVR has been approved for mobile home
installations.
20010175
CDV Series Direct Vent Gas Fireplace
A
B
Framing and Finishing
Check fireplace to make sure it is levelled
and properly positioned.
To mount the appliance:
1. Choose the location.
2. 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.
3. 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.
4. The standoffs are adjustable for different drywall
thicknesses. The unit is shipped from the factory at
1/2” (13 mm). Loosen the four (4) screws securing
each standoff to the top of the fireplace. Slide the
standoff back. Tighten the screws. This yields a 5/8”
(16 mm) thick drywall space. Removing the standoff
and having the tabs on the standoff face the rear of
the unit yields a 3/4” (19 mm) drywall space. (Fig. 4)
NOTE: Drywall must stop at standoffs and not touch
top of unit.
Flange Drywall
Position Depth
A 1/2” / 13 mm
B 5/8” / 16 mm
Flange Location for Desired
Drywall Depth at Header
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. 4a)
4. Secure hood to bottom flange of fireplace surround
top using three screws removed in Step 2. (Fig. 4a)
5. Carefully remove protectors under the relief plates
on top of the firebox.
6. Replace top louvre.
Hood
Sheet
Metal
Screws
FP1609
Fig. 4a Secure hood to fireplace with sheet metal screws.
Final Finishing
Noncombustible materials such as brick or tile may be
extended over the edges of the face of the fireplace.
DO NOT cover any vent or grille panels.
If a Trim Kit is going to be installed on the fireplace, the
brick or tile will have to be installed flush with the edges
of the fireplace.
36CDVR / 36CDVT
Certified To
ANSI Z21.88b-2003 / CSA 2.33b-2003
Vented Gas Fireplace Heaters
FP1603
Standoff Location for Desired Drywall Depth at Header
Screws
Tabs
Fig. 4 Nailing flanges and standoffs.
FP1603a
20010175
36CDVRRN Units: GFRL1J0
36CDVTRN Units: GFTN1J0
Gas Specifications
Max. Min.
Input Input
Model Fuel Gas Control BTU/h BTU/h
36CDVRRN Nat Millivolt 21,000 14,700
36CDVRRP* Prop Millivolt 21,000 15,750
36CDVTRN Nat Millivolt 21,000 14,700
36CDVTRP* Prop Millivolt 21,000 15,750
*Using conversion kit
7
CDV Series Direct Vent Gas Fireplace
TP
TH
TP
TH
Gas Inlet and Manifold Pressures
Natural LP (Propane)
Inlet Minimum 5.5” w.c. 11.0” w.c.
Inlet Maximum 14.0” w.c. 14.0” w.c.
Manifold Pressure 3.5” w.c. 10.0” w.c.
High Elevations
Input ratings are shown in BTU per hour and are
certified without deration for elevations up to
4,500 feet (1,370 m) above sea level.
For elevations above 4,500 feet (1,370 m) in USA,
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 (1,370 m).
Gas Line Installation
When purging the gas lines, the front window frame assembly must be removed.
The gas pipeline can be brought in through the rear
of the appliance as well as the bottom. Knockouts are
provided on the bottom behind the valve to allow for the
gas pipe installation and testing of any gas connection.
It is most convenient to bring the gas line in from the
rear right side of the valve as this allows fan installation
or removal without disconnecting the gas line.
The gas line connection can be made with properly
tinned 3/8” copper tubing, 3/8” 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 National Fuel Gas Code, ANSI
Z223.1/NFPA 54 in the USA or the CSA-B149.1 installation code.
1/2” Gas Supply
1/2” NPT x 1/2” Flare Shutoff Valve
3/8” Flex Line
(From Valve)
FP297A
Fig. 5 Typical gas supply installation.
Always check for gas leaks with a mild
soap and water solution. Do not use an
open flame for leak 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. See gas specification for pressure details and ratings.
The fireplace valve must not be subjected to any test
pressures exceeding 1/2 psi. Isolate or disconnect this
and any other gas appliance control from the gas line
when pressure testing.
Remote ON/OFF Switch
Installation
1. Carefully unwrap the remote wire that is attached to
the valve. There are two 1/2” (13 mm) knockouts,
one on each side of the outer casing.
2. Remove the knockout desired and insert the plastic
snap bushing on the remote wire in the 1/2” hole.
Feed the remote wire through the outer casing.
3. Attach the wire to an ON/OFF switch and install the
switch into the receptacle box. (Fig. 6)
Remote ON/OFF Switch
or Thermostat
or Remote Control
Gas
Control
Valve
FP1224
Fig. 6 Remote switch wiring diagram.
Do not wire the remote ON/OFF wall switch
for the gas fireplace to the 120 volt power
supply.
120V Electrical Hook Up
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 local codes
and the national electrical code ANSI/
NFPA No. 70.
It is strongly suggested that wiring of the
Electrical Junction Box be carried out by a
licensed electrician.
8
20010175
Ensure that the power to the supply line
OUTSIDE
INSIDE
has been disconnected before commencing this procedure.
The electrical junction box has been fitted standard on
this model to allow for the easy connection of an optional fan kit.
To connect the electric box to the house electrical sup
ply follow the steps below.
1. Unscrew the retaining screw holding the electric
cover to the outside of the unit. (Fig. 7)
2. Remove the knockout from the electric cover plate.
3. Insert the wire connector through the hole in the
electric cover plate and secure.
4. Insert the house wire through the connector on the
cover plate.
5. Secure the wires from the receptacle to the incoming
line.
6. The receptacle has four wires connected to it. The
receptacle is set up for a split system. The top plug
of the receptacle is wired separately from the bottom
one.
7. Green is ground. White is neutral, Black and red are
line voltage to each plug on the receptacle.
-
CDV Series Direct Vent Gas Fireplace
Electric Receptacle
Electric Receptacle
Cover Plate
FP1597
Fig. 7 Electric receptacle.
General Venting
Your fireplace is approved to be vented either through
the side wall, or vertically through the roof.
• Only CFM Corporation venting components specifi-
cally approved and labelled for this fireplace may be
used.
• Vent terminations 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,
garden sheds, fences, decks or utility buildings within
24” (610mm) 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 next
page.
*Check with local codes or in absence of same with
CSAB149.1 Installation Codes (1991) for Canada or follow the current National Fuel Gas Code, ANSI Z223.1/
NFPA 54 for installations in the USA.
20010175
9
CDV 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
V
B
INSIDE
CORNER DETAIL
V
A
G
V
N
N
V
V
G
G
A
CFM145a
General Venting Information - Termination Location
Canadian Installations1 US Installations
A = Clearance above grade, veranda, porch, 12” (30 cm) 12” (30 cm)
deck, or balcony
B = Clearance to window or door that may be 6” (15 cm) for appliances 6” (15 cm) for appliances
opened < 10,000Btuh (3kW), 12” (30 cm) < 10,000 Btuh (3kW), 9”
for appliances > 10,000 Btuh (3kW) and (23 cm) for appliances > 10,000
< 100,000 Btuh (30kW), 36” (91 cm) Btuh (3kW) and < 50,000 Btuh
for appliances > 100,000 Btuh (30kW) (15kW), 12” (30 cm) for
appliances > 50,000 Btuh (15kW)
C = Clearance to permanently closed window 12” (305 mm) recommended to 12” (305 mm) recommended to
prevent window condensation prevent window condensation
D = Vertical clearance to ventilated soffit located
above the terminal within a horizontal 18” (458 mm) 18” (458 mm)
distance of 2’ (610mm) from the center
line of the terminal
E = Clearance to unventilated soffit 12” (305 mm) 12” (305 mm)
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’ (91 cm) within a height of 15’ (5 m) 3’ (91 cm) within a height of 15’
extended above meter/regulator assembly above the meter/regulator assembly (5 m) above the meter/regulator
assy
I = Clearance to service regulator vent outlet 3’ (91 cm) 3’ (91 cm)
J = Clearance to nonmechanical air supply inlet 6” (15 cm) for appliances < 10,000 6” (15 cm) 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 (23 cm) for appliances > 10,000
< 100,000 Btuh (30kW), 36” (91cm) Btuh (3kW) and < 50,000 Btuh
for appliances > 100,000 Btuh (30kW) (15kW), 12” (30 cm) for
appliances > 50,000 Btuh (15kW)
K = Clearance to a mechanical air supply inlet 6’ (1.83 m) 3’ (91 cm) above if within 10
feet (3 m) horizontally
L = Clearance above paved sidewalk or paved 7’ (2.13 m)† 7’ (2.13 m)†
driveway located on public property
M = Clearance under veranda, porch, deck or 12” (30 cm)‡ 12” (30 cm)‡
balcony
N = Clearance above a roof shall extend a minimum of 24” (610 mm) above the highest point when it passes through the roof
surface, and any other obstruction within a horizontal distance of 18” (450 mm).
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.
10
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2
CDV Series Direct Vent Gas Fireplace
Outside Corner
Inside Corner
Termination Clearances
Termination clearances for buildings with combustible and noncombustible exteriors.
A =
Combustible
6"(152mm)
Noncombustible
2"(50mm)
B =
Combustible
6"(152mm)
Noncombustible
2"(50mm)
A
Balcony with no side wall
G =
Combustible &
Noncombustible
12"(305mm)
G
Balcony with perpendicular side wall
H = 24"(610mm)
J = 20"(508mm)
H
J
B
Recessed Location
C = Maximum depth of 48"
(1219mm) for recessed
location.
D = Minimum width for back wall
of a recessed location.
Combustible 38"(965mm)
Noncombustible 24"(610mm)
E = Clearance from corner in
recessed location.
Combustible 6"(152mm)
Noncombustible 2"(50mm)
C
D
C
E
V
V
Combustible &
Noncombustible
V
V
V
Fig. 8 Termination clearances.
Canadian Installations:
Venting system must be installed in accordance with the
current CSA-B149.1 installation code.
USA Installations:
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.
The venting system must conform with local codes and/
or the current National Fuel Gas code ANSI Z223.1/
NFPA 54.
Only venting components manufactured by CFM Corporation can 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 pipe in place
with a hose clamp (provided).
*Be sure the flex pipe overlaps at least 1” (25 mm) 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.
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Fig. 9 Apply high temperature sealant to 4” and 7” pipes.
Hose Clamp
Apply High Tempera
ture Sealant
FP1471a
584-15
-
11
CDV Series Direct Vent Gas Fireplace
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
Twist Lock Pipes
When using CFM Corporation 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 joint of any
telescopic vent section used in the system.
To join the twist lock pipes together, simply align the
beads of the male end with the grooves of the female
end, then while bringing the pipe together, twist the pipe
until the flange on the female end contacts the external
flange on the male end. It is recommended that you
secure the joints with three (3) sheet metal screws,
however this is not mandatory with twist lock pipe.
To make it easier to assemble the joints we suggest
putting a lubricant (Vaseline or similar) on the male end
of the twist lock pipe prior to assembly.
Male End Female End
Vertical dimension from the floor of the unit
to the center of the horizontal vent pipe
Screw Holes
Fig. 10 Twist-lock pipe joints.
36CDVR Venting
How to Use the Vent Graph
The vent chart should be read in conjunction with the
following vent installation instructions to determine the
relationship of the vertical and horizontal dimensions 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. 11)
locate the point intersecting with 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
fireplace 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’ (2.14 m), the horizontal run to the face of the outer
wall must not exceed 8¹⁄₂’ (2.6 m).
12
TWL100
Horizontal dimension from the outside face of the
wall to the center of the fireplace vent flange
Sidewall vent graph showing the relationship between vertical
and horizontal dimensions for a Direct Vent flue system.
Fig. 11 Sidewall venting graph. (Dimensions in feet)
Rear Wall Venting Applications
* Exterior Outside Wall
7” (178 mm) to 13” (330 mm)
From Rear of Unit *
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 straight horizontal distance be-
tween the rear of the appliance and the outside
face of the rear wall is 13” (330 mm). The minimum is 7” (178 mm). (Fig. 12)
• Minimum clearances between vent pipe and com-
bustible materials are as follows:
Top - 1” (25 mm)
Sides - 1” (25 mm)
Bottom - 1” (25 mm)
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