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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2
20010175
CDV Series Direct Vent Gas Fireplace
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A
B
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Y
B
X
X
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
F
X - Rough Opening Width
Rough
Opening
Height
Rough
Opening
Depth
U
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A
Y
B
K
L
Q
Gas Line
Access
Gas Line
Access
Low Voltage
Electrical
Access
D
C
L
Centerline of
7" Collar
N
Low
Voltage
Access
P
R
S
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
F
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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L
K
A B C D E
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X
Y
Z
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.
6
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
20010175
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.
20010175
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)
20010175
CDV Series Direct Vent Gas Fireplace
13"
(330 mm)
Max.
22”
(559 mm)
C
L
Bend Tab
Top View
Straight Venting
Fig. 12 Rear vent applications.
FP1598
Rear Wall Installation
Twist Lock Pipe
STEP 1
Locate vent opening on the wall. To locate hole center
consult with appropriate fireplace dimensions, Page 4.
Frame as shown below.
Combustible Walls
(240 x 240 mm) hole through the exterior wall and
frame as shown.
Noncombustible Walls
be 7¹⁄₂” (190 mm) in diameter.
Vent Opening for Combustible Wall
9³⁄₈”
(240 mm)
(Fig. 13): Cut a 9³⁄₈”H x 9³⁄₈” W
(Fig. 13): Hole opening must
9³⁄₈”
(240 mm)
Framing
Detail
Firestop
Fig. 14 Install firestop.
FP1600
STEP 5
Twist the termination collar so it locks onto fireplace collars. Run screw through tab to keep collar from turning.
(Fig. 15)
STEP 6
Slide fireplace into position.
STEP 7
From the outside of the house, slide the termination
onto the collars.
STEP 8
Secure the termination to the house with the four (4)
screws provided.
Finished
Wall
Secure with Screw
Vent Termination
Fireplace Hearth
Opening for Noncombustible Wall
7¹⁄₂”
(190 mm)
VO584-100
Fig. 13 Locate vent opening on wall.
STEP 2
Install interior firestop as shown in Figure 14.
STEP 3
Remove telescoping collar from termination.
STEP 4
Bend tab on outer casing up and insert collar onto fireplace collars. (Fig. 14)
20010175
Firestop
FP1005a
Fig. 15 Side view of final unit location.
13
CDV Series Direct Vent Gas Fireplace
C
L
to Floor
29
”
(749 mm)
Rear Wall Vent Installations -
45° Flex Vent Pipe
NOTE: Under no circumstances can ridged pipe or
a rigid 45° elbow be used. The 7TCDV45KT must be
used in a corner installation. The corner placement
dimensions on Page 4 of the manual must be adhered to! Figures 16 & 18 show general installations.
Refer to instructions below for a detailed description
of installation.
1. Determine where the termination is to be in
stalled. Locate the center of the hole 29¹⁄₂”
(749 mm) off the floor. (Fig. 16)
NOTE: The location of the termination hole must be
adhered to!
2. Install the firestop as shown on Page 12.
3. Remove the flex vent and extend the flex vent out
to its longest length.
4. Bend the tab on the back of the fireplace up. (Fig.
14)
5. Insert the collar on the flex vent that has the twist
lock embosses on it onto the collar of the fireplace. Twist the collar to “lock it” onto the fireplace. Run a screw through the tab and into the
collar to secure the collar onto the fireplace.
6. Bend the flex pipe up 90° as close to the fireplace
as possible. (Fig. 17)
7. Slide the fireplace partially into the corner and,
while holding the vertical portion of the flex vent
pipe, grab the exposed end collar and bend it
down to the height of the opening in the wall.
8. While pushing the unit in place, slide the collar
through the firestop. NOTE: It may be necessary
to trim some material off of the collar. The collar is made long to accommodate brick finished
houses. (Fig. 19)
9. Secure the collar in place by running a screw
through the tab in the firestop and through the
collar.
10. Slide the termination into the collar and secure
with the 4 screws provided. (Fig. 19)
-
Termination
Flex Section
Appliance
Collars
FP1473
Fig. 16 Grasp the vent pipe close to the collar and bend to
45° angle. Do not exceed 45°.
FP1604
Fig. 17 Bend flex pipe up 90° as close to fireplace as possible.
Corner
Framing
Do Not Exceed
45° Bend
14
Termination
FP1606
Fig. 18 Rear view of corner installation.
20010175
CDV Series Direct Vent Gas Fireplace
Maximum
20 ft. (6.1m)
7.5'
(2.3m)
15 ft.
(4572mm)
48"
(1.2m)
12"
(305mm)
27”
(692 mm)
20” - 32”
(508 - 813 mm)
Screw
Screws
Flex Vent
Collar
FP1605
Fig. 19 Secure collar in place, slide termination into collar.
Rear Wall Vent Application
* Exterior Outside Wall
20” - 32” (508 - 813 mm)
From Rear of Unit *
1. Determine where the termination is to be installed.
(Fig. 20)
2. Locate the hole 27¹⁄₄” (692 mm) off the floor. This
is the center line of the termination. Refer to “Rear
Wall Installation Twist Lock Pipe” section.
Screw
Screws
Flex Vent
Collar
Vertical Sidewall Applications
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 shows the relationship between vertical
and horizontal side wall venting and will help to determine the various dimensions allowable.
Minimum clearance between vent pipes
and combustible materials is 1”(25 mm)
on top, bottom and sides unless otherwise
noted.
When vent termination exits through foundations less
than 20” below siding outcrop, the vent pipe must
flush up with the siding. It is always best to locate the
fireplace in such a way that minimizes the number of
offsets and horizontal vent length.
The horizontal vent run refers to the total length of vent
pipe from the flue collar of the fireplace to the face of
the outer wall.
Horizontal plane means no vertical rise exists on this
portion of the vent assembly.
• The maximum horizontal vent run is 20 ft. (6.1 m)
when the vertical vent rise is 7¹⁄₂ ft. (2.3 m). (Fig. 21)
• The maximum number of 90° elbows per side wall
installation is three (3).
FP1605a
Fig. 20 The centerline of the termination must be 27¹⁄₄”
(692 mm) off the floor.
3. Mount the flex pipe assembly to the fireplace collars
and twist the collar that the flex pipe is attached to
onto the fireplace.
4. Once the collar is twisted onto the fireplace collar,
secure with a screw through the tab. (Fig. 15)
5.
While sliding the fireplace into position, lift up the end
of the flex pipe and slip it through the firestop. *Be
careful not to extend the flex too much. The flex pipe
needs to have an immediate rise before going horizontal. NOTE: Be careful not to distort the outer flex
as this will affect the performance of the fireplace.
6. Secure the collar to the firestop by bending the tab
out on the firestop and running a screw through the
tab and collar.
7. From outside the house, slide the termination onto
the collars sticking through the firestop.
8. Secure the termination to the house with the four (4)
screws provided. Be sure to seal around the termination and house cladding.
20010175
Vertical Dimension
7¹⁄₂’ Minimum When
Horizontal Run is
20’
7TCDV90
or
7TDV90
CFM141
Fig. 21 Maximum number of 90° elbows is three (3).
• If a 90° elbow is used in the horizontal vent run
(level height maintained) the maximum horizontal
vent length is reduced by 36” (914 mm). (Fig. 22)
This does not apply if the 90° elbows are used to
increase or redirect a vertical rise. (Fig. 23)
Example: According to the chart the maximum hori-
zontal vent length in a system with a 7.5’ (2.3 m) vertical rise is 20’ (6 m) and if a 90° elbow is required in
15
CDV Series Direct Vent Gas Fireplace
10 ft.
(3048 mm)
7 ft. 6 in.
(2286 mm)
7 ft.
(2134 mm)
1
2
3
4
1 + 2 + 3 + 4 = 270
o
Maximum
3' (914mm)
Fig. 22 Maximum horizontal vent run.
Fig. 23 Maximum vent run with elbows.
• The maximum number of 45° elbows permitted per
• For each 45° elbow installed in the horizontal run,
• The maximum number of elbow degrees in a system
•IMPORTANT• Minimum clearance between vent
pipes and
on bottom, sides and top.
The venting system must conform with local codes, or
in the absence of local codes, with National Fuel Gas
Code, ANSI Z223.1/NFPA 54 - latest edition, or CSA
B149.1 Installation Code.
16
the horizontal vent it must be reduced to 17’ (5.2 m).
In Figure 23 Dimension A plus B must not be greater
than 17’ (5.2 m).
7TCDV90
CFM142
90° Elbow = 3 ft.
A + B = 17 ft. (Max.)
CFM147
side wall installation is two (2). These elbows can be
installed in either the vertical or horizontal run.
the length of the horizontal run MUST be reduced by
18” (45 cm). This does not apply if the 45° elbows
are installed on the vertical part of the vent system.
is 270°. (Fig. 24)
combustible materials is one (1”) inch (25 mm)
Twist Lock Vent Starter Kit 7TCRVT, plus
Elbow 7TCDV90 must be used in Vertical
Sidewall installations.
Canadian & USA Installations:
Example:
Elbow 1 = 90˚
Elbow 2 = 45˚
Elbow 3 = 45˚
Elbow 4 = 90˚
Total angular variation = 270˚
CFM132
Fig. 24 Maximum number of elbows.
Only CFM Corporation venting components specifically
approved and labelled for this fireplace may be used
.
Vertical Sidewall Installation
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. 25)
For combustible walls first frame in opening.
Combustible Walls (Fig. 25): Cut a 9³⁄₈”H x 9³⁄₈” W
(240 x 240 mm) hole through the exterior wall and
frame.
Noncombustible Walls (Fig. 25): Hole opening must
be 7.5” (190 mm) in diameter.
Vent Opening for Combustible Wall
9³⁄₈”
(240mm)
9³⁄₈”
(240mm)
Framing Detail
Fireplace Hearth
Opening for Noncombustible Wall
7¹⁄₂”
(190mm)
VO584-100
Fig. 25 Locate vent opening on wall.
20010175
CDV Series Direct Vent Gas Fireplace
X
�
X
X
X
STEP 2
Slide venting component on collar of fireplace. Secure
component to fireplace by running a screw (self-tap
-
ping) through tab & into outer casing. (Fig. 26)
STEP 3
Measure the horizontal length requirement including a
2” (51 mm) overlap, i.e. from the elbow to the outside
wall finish plus 2”, or the distance required if installing a
second 90° elbow. (Fig. 27)
Ensure Pipes are
Concentric
7TCDV90
CFM143a
Fig. 26 Always start vertical run with 7TCDV90 on 36CDVR
unts.
STEP 5
Guide the vent termination’s 4” and 7”
collars 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. (Fig. 29)
STEP 6
Support the horizontal pipes every 36” (914 mm) with
metal pipe straps. Make sure that the horizontal vent
pipe is installed on a level horizontal plane.
High
Temperature Sealant
Always install horizontal venting on a
level plane.
CFM136
Fig. 27 Measure horizontal length including 2” overlap.
STEP 4
Use appropriate length of pipe section - telescopic or
fixed - and install the horizontal vent sections. A starter
section of pipe which goes through the wall is packaged
with the 7TCRVT kit, and can be cut to suit if necessary.
(Fig. 28)
Sealing vent pipe and firestop gaps with
high temperature sealant will restrict cold
air being drawn in around fireplace.
CFM137
Fig. 28 Apply high temperature sealant.
CFM138
Fig. 29 Horizontal length requirement.
STEP 7
Re-check the fireplace to make sure that it is levelled,
properly positioned, and nailed or screwed to the floor.
If applied, the fireplaces adjustable frame drywall strips
(nailing flanges) should be fastened. Refer to “Framing
& Finishing”.
20010175
17
CDV Series Direct Vent Gas Fireplace
24" (610mm)
Minimum*
Below Grade Installations
When it is not possible to meet the required vent terminal clearances of 12” (305 mm) above grade level
a snorkel vent kit #7TDVSNORK is required. It allows
installation depth of down to 7” (178 mm) below grade
level. The 7” is measured from the center of the horizontal vent pipe as it penetrates through the wall.
If venting system is installed below
ground, we recommend a window well with
adequate and proper drainage.
Ensure sidewall venting clearances are observed.
The maximum horizontal run with 24”
vertical rise is 36” (914 mm) from the
back of the fireplace to the face of the
exterior wall. See vent graph (Page 12) for
extended horizontal run if the vertical rise
exceeds 24” (610 mm).
1. Establish vent hole through the wall. (Fig. 13)
2. Remove soil to a depth of approximately 16”
(406mm) below base of snorkel. Install window
well (not supplied). Refill hole with 12” (305 mm) of
coarse gravel leaving a clearance of approximately
4” (102 mm) below snorkel. (Fig. 30)
3. Install vent system. See Page 12, Steps 2 through 5.
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 into the vent pipe and secure to the wall.
7. Level the soil to maintain a 4” (102 mm) clearance
below snorkel. (Fig. 30)
Do not back fill around snorkel. A
clearance of at least 4” (102 mm) must be
maintained between the snorkel and the
soil.
If the foundation is recessed, use recess brackets (not
supplied) for securing lower portion of the snorkel.
Fasten 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 protruding
wall face. (Fig. 31)
Snorkel
Foundation Recess
Recess Brackets
Watertight Seal
Around Pipe
Fig. 31 Snorkel installation, recessed foundation.
Wall Screws
Sheet Metal
Screws
BG401
Vertical Through-the-Roof Applications
This Gas Fireplace has been approved for:
1. Vertical installations up to 40’ (12 m) in height. Up to
10’ (3 m) horizontal vent run can be installed within
the vent system using a maximum of three 90°
elbows.
Firestop
7” Pipe
Fig. 30 Below grade installation.
18
7TDVSNORK
(Snorkel)
4” (102mm)
Clearance
Min.
Window
Well
Gravel
Drain
Foundation Wall
*A minimum of 24” (608mm)
vertical pipe must be installed
when using 7TDVSNORK Kit.
BG400
Maximum
10’
Minimum
8’ (2.4 m) /
Maximum
40’ (12 m) Vertical
Rise
Fig. 32 Support straps for horizontal runs.
(3 m)
Pipe Straps Every
3’ (914 mm)
2. Up to two 45° elbows may be used within the
horizontal run. For each 45° elbow used on the
horizontal level the maximum horizontal length must
be reduced by 18” (457 mm).
20010175
CFM148
CDV Series Direct Vent Gas Fireplace
11"
11"
Example: Maximum horizontal length
0 x 45° elbows = 10’ (3 m)
1 x 45° elbows = 8
¹⁄₂’ (2.6 m)
2 x 45° elbows = 7’ (2.1 m)
3. A minimum of an 8’ vertical rise.
4. Two sets of 45° elbows offsets within these vertical
installations. From 0 to a maximum of 8’ (2.4 m) of
vent pipe can be used between elbows. (Fig. 33)
5. 7DVCS must be used to support offsets. (Fig. 33)
This application will require that you first determine
the roof pitch and use the appropriate 7DVSKV (A, B
or F). (Refer to Venting Components List, Page 27)
Max.
8’
(2.4 m)
45°
50’
Max.
8’
(2.4 m)
Typical Offset Installation
Fig. 33 Typical vertical roof applications.
(15 m)
45°
Typical Roof
Support Ap
Typical
Ceiling
Support
Application
-
plication
FP1021
Vertical Through-the-Roof Installation
Attic Insulation
Shield
Joist
Ceiling
Installation
Upper Floor
Joist
Firestop Spacer
Nails (4)
CFM100
Fig. 34 Place firestop spacer(s) and secure.
If there is room above ceiling level,
firestop spacer must be installed on both
the bottom and the top side of the ceiling
joists. If an attic is above ceiling level a
7DVAIS (Attic Insulation Shield) must be
installed. (Fig. 34)
7. Install roof support (Fig. 35 & 36) and roof flashing
making sure upper flange is below the shingles. (Fig.
35)
8. Install appropriate pipe sections until the venting is
above the flashing. (Fig. 35)
The enlarged ends of the vent section
always face downward. (Fig. 35)
1. Locate your fireplace.
2. Plumb to center of the (4”) flue collar from ceiling
above and mark position.
3. Cut opening equal to 9
³⁄₈” x 9³⁄₈” (240 x 240 mm).
4. Proceed to plumb for additional openings through
the roof. In all cases, the opening must provide a
minimum of 1 inch clearance to the vent pipe, i.e.,
the hole must be at least 9³⁄₈” x 9³⁄₈” (240 x 240 mm).
5. Place fireplace into position.
6. Place firestop(s) #7DVFS or Attic Insulation Shield
#7DVAIS into position and secure. (Fig. 34)
20010175
3 #5 Sheet Metal
Screws per Joint
Sealant
Storm Collar
TWL101a
Fig. 35 Roof flashing.
19
CDV Series Direct Vent Gas Fireplace
Min.
2' (610 mm)
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
Roof
2’ Min.
Roof Support
50’
(15 m)
Attic Insulation
Shield
Attic
Insulation
Joists
Fig. 36 Typical straight-up installation.
Vent
Termination
Storm Collar
Roof Flashing
Joists
FP1022
36CDVT Vertical 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. 38),
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 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).
Vertical dimension from the floor of the unit
to the center of the horizontal vent pipe
Fig. 37 Minimum termination to roof clearance.
9. Install storm collar and seal around the pipe.
10. Add additional vent lengths for proper height. (Fig
37)
11. Apply high temperature sealant to 4” and 7” collars
of vertical vent termination and install.
20
FP1185
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. 38 Sidewall venting graph. (Dimensions in feet)
20010175
20' (6m)
7.5' (2.3m)
Vertical Sidewall Applications
3'
(914mm)
7.5'
(2.3m)
A
B
A + B = 17' (5.2m) Max.
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 vertical and horizontal side wall venting will help to determine the various dimensions allowable.
Minimum clearance between vent pipes and
combustible materials is one 1” (25 mm)
on top, bottom and sides unless otherwise
noted.
When the vent termination exits through foundations
less than 20” (508 mm) below siding outcrop, the vent
pipe must flush up with the siding.
It is always best to locate the fireplace in such a way
that minimizes the number of offsets and horizontal
vent length of vent pipe from the flue collar of the fireplace to the face of the outer wall.
CDV Series Direct Vent Gas Fireplace
FP1237
Fig. 40 Maximum horizontal vent run.
1 x 90° elbow in horizontal plane = 3’ (914mm)
Pipe
Straps Every
3’ (914mm)
Pipe Straps
Every 3’ (914mm)
Firestop/Zero
Clearance Sleeve
FP1012
Fig. 39 Support straps for horizontal runs.
Horizontal plane means no vertical rise exists on this
portion of the vent assembly.
• The maximum number of 90° elbows per side wall
installations is three (3).
• If a 90° elbow is fitted directly onto the fireplace
flange the maximum horizontal vent run before the
termination or a vertical rise is 36” (914 mm).
• If a 90° elbow is used in the horizontal vent run
(level height maintained) the maximum horizontal
vent length is reduced by 36” (914 mm). This does
not apply if the 90° elbows are used to increase or
redirect a vertical rise.
Example: According to the chart the maximum
In Figure 41, Dimension A plus B must not be
20010175
horizontal vent length in a system with a 7.5’ (2.3 m)
vertical rise is 20’ (6 m) and if a 90° is required in
the horizontal vent it must be reduced to 17’ (5.2 m).
greater than 17’ (5.2 m).
FP1238
Fig. 41 Maximum vent run with elbows.
• The maximum number of 45° elbows permitted per
side wall installation is two (2). 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.
• The maximum number of elbow degrees in a system
is 270°. (Fig. 42)
21
CDV Series Direct Vent Gas Fireplace
1
2
3
4
X
X
Example:
Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total angular variation = 270°
1 + 2 + 3 + 4 = 270°
FP1239
Fig. 42 Maximum number of elbow degrees.
Vertical Sidewall Installations
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. 43)
For combustible walls first frame in opening.
Combustible Walls:
x 240 mm) hole through the exterior wall and frame as
shown.
Noncombustible Walls:
be 7¹⁄₂” (190 mm) in diameter.
(Fig. 43) Cut a 9³⁄₈”H x 9³⁄₈”W (240
(Fig. 43) Hole opening must
STEP 2
Place fireplace into position. (Fig. 44) Measure the verti
cal height (X) required from the base of the flue collars
to the center of the wall opening.
FP1240
Fig. 44 Vertical height requirement.
STEP 3
Using appropriate venting component(s) attach to
fireplace with three (3) screws. (Fig. 45) Follow with the
installation of the inner and outer elbow. Again secure
joints with three (3) sheet metal screws.
STEP 4
Measure the horizontal length requirement including
a 2” (51 mm) overlap, ie from the elbow to the outside
wall face plus 2” (51 mm) (or the distance required if
installing a second 90° elbow). (Fig. 45)
Always install horizontal venting on a level
plane.
-
Vent Opening for Combustible Wall
9³⁄₈”
(240mm)
9³⁄₈”
(240mm)
Fig. 43 Locate vent opening on wall.
Fireplace Hearth
Opening for Noncombustible Wall
7¹⁄₂”
(190mm)
22
Framing
Detail
FP1241
Fig. 45 Horizontal length requirement.
VO584-100
20010175
STEP 5
Use appropriate length of pipe sections - telescopic or
fixed - and install the horizontal vent sections. The sections which go through the wall are packaged with the
starter kit, and can be cut to suit if necessary. (Fig. 46)
Sealing vent pipe and firestop gaps with
high temperature sealant will restrict cold
air being drawn in around fireplace.
FP1242
Fig. 46 Through the wall.
STEP 6
Guide the vent terminations 4” and 7” collars into their
respective vent pipes. Double check that the vent pipes
overlap the collars by 2” (51mm). Secure the termination to the wall with screws provided and caulk around
the wall plate to weatherproof. (Fig. 23) 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”
(102 mm) vent pipe however for this method you must
extend the 4” (102 mm) pipe approximately 6” (152 mm)
beyond the outer face of the wall.
Support horizontal pipes every 3’ (914 mm) with metal
pipe straps. Make sure the horizontal vent pipe is in-
stalled on a level horizontal plane.
CDV Series Direct Vent Gas Fireplace
FP1243
Fig. 47 Apply high temperature sealant to collars or terminations.
Below Grade Installations
When it is not possible to meet the required vent terminal clearances of 12” (305 mm) above grade level a
snorkel vent kit is recommended. It allows installation
depth of down to 7” (178 mm) below grade level. The
7” is measured from the center of the horizontal vent
pipe as it penetrates through the wall.
If venting system is installed below
ground, we recommend a window well with
adequate and proper drainage.
Ensure sidewall venting clearances are observed.
If installing a snorkel a minimum 24” (610 mm) vertical
rise is necessary. The maximum horizontal run with
the 24” (610 mm) 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.
Refer to the Sidewall Vent Graph for extended
horizontal run if the vertical rise exceeds 24” (610 mm).
1. Establish vent hole through the wall. (Fig. 43)
2. Remove soil to a depth of approximately 16” (406
mm) below base of snorkel. Install drain pipe. Install
window well (not supplied). Refill hole with 12”
(305mm) of coarse gravel leaving a clearance of approximately 4” (102 mm) below snorkel. (Fig. 48)
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 to maintain a 4” (102 mm) clearance
below snorkel. (Fig. 48)
20010175
23
CDV Series Direct Vent Gas Fireplace
Max. 10' (3m)
Max. Height
40' (12m)
Min. Height
7' (2.3m)
Zero Clearance Sleeve
(if required)
Firestop
7” Pipe
24” (610mm)
Minimum*
BG402
Fig. 48 Below grade installation.
Screws
7TDVSNORK
(Snorkel)
4” (102mm)
Clearance
Min.
Window
Well
Gravel
Drain
Foundation Wall
*A minimum of 24” (610mm) ver
tical pipe must be installed when
using the 7TDVSNORK Kit.
*The 22” (559mm) vertical rise
(center to center) of the snorkel
may be included for calculationof
max. horizontal run.
-
Do not back fill around snorkel. A clearance
of at least 4” (102 mm) must be maintained
between snorkel and the soil.
If the foundation is recessed, use recess brackets (not
supplied) for securing lower portion of the snorkel.
Fasten 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 protruding
wall face. (Fig. 49)
Vertical Through-the-Roof Applications
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. 50)
Pipe Straps Every
3’ (914mm)
FP1244
Fig. 50 Support straps for horizontal runs.
Fig. 49 Snorkel installation, recessed foundation.
24
Foundation Recess
Recess Brackets
Watertight Seal
Around Pipe
Snorkel
Wall Screws
Sheet Metal
Screws
BG401
• Up to two 45° elbows may be used within the
horizontal run. For each 45° elbow used on the
horizontal level the maximum horizontal length must
be reduced by 18” (457 mm).
Example: Maximum horizontal length
0 x 45° elbows = 10’ 93 m)
1 x 45° elbows = 8¹⁄₂’ (2.6 m)
2 x 45° elbows = 7’ (2.1 m)
• A minimum of an 8’ (2.4 m) vertical rise.
• Two sets of 45° elbows offsets within these vertical
installations. From 0 to a maximum of 8’ (2.m) of
vent pipe can be used between elbows. (Fig. 51)
• 7DVCS must be used to support offsets. (Fig. 53)
This application will require that you first determine
the roof pitch and use the appropriate starter kit.
(Refer to Venting Components List)
• The minimum height of the vent above the highest
point of penetration through the roof is 2’ (610 mm).
(Fig. 55)
20010175
CDV Series Direct Vent Gas Fireplace
1
2
3
4
Max. 8' (2.4m)
11"
11"
Attic Insulation
Shield
Joist
1 + 2 + 3 + 4 = 270°
Fig. 51 Typical offset application.
Vertical Through-the-Roof Installation
1. Locate your fireplace.
2. Plumb to center of the (4” (102 mm) flue collar from
ceiling above and mark position.
3. Cut opening equal to 9
4.
Proceed to plumb for additional openings through the
roof. In all cases, the opening must provide a minimum
of 1” (25 mm) clearance to the vent pipe, i.e., the hole
must be at least 9³⁄₈” x 9³⁄₈” (240 x 240 mm).
5. Place fireplace into position.
6. Place firestop(s) #7DVFS or Attic Insulation Shield
³⁄₈” x 9³⁄₈” (240 x 240 mm).
FP1245
Ceiling Installation
Fig. 52 Place firestop spacer(s) and secure.
Typical Roof Support
Application
Fig. 53 Roof and ceiling supports.
Typical Ceiling Sup
Upper Floor
Joist
Firestop Spacer
Nails (4)
port Application
#8 Sheet Metal Screws
(3 per joint)
Sealant
Storm Collar
CFM100a
-
CFM110
#7DVAIS into position and secure. (Fig. 52)
7. Install roof support (Fig. 53) and roof flashing making
sure upper flange of flashing is below the shingles.
(Fig. 53)
8. Install appropriate pipe sections until the venting is
above the flashing. (Fig. 53)
9. Install storm collar and seal around the pipe.
Fig. 54 Roof flashing.
10. Add additional vent lengths for proper height. (Fig.
55)
11. Apply high temperature sealant to 4” and 7” collars.
TWL101a
20010175
25
CDV Series Direct Vent Gas Fireplace
Min.
2' (610 mm)
Fig. 55 Minimum termination to roof clearance.
If there is a room above ceiling level,
firestop spacer must be installed on both
the bottom and the top side of the ceiling
joists. If an attic is above ceiling level a
7DVAIS (Attic Insulation Shield) must be
installed.
The enlarged ends of the vent section
always face downward. (Fig. 54)
CFM190
26
20010175
*NOTE: Must order a 7TCDV90 elbow
for rear vent to vertical application only.
CDV Series Direct Vent Gas Fireplace
Venting Components
20010581 - Straight Out the Back Termination
10001953 - Through-the-Wall Termination
(for other than straight out the back on rear vent)
Starter Kit Model 7TCRVT: Straight thru Rear Vent for 7” - 13” Vent
Application
Model 7TCD45KT: Vent Kit for 45° Installation or 13” - 32”
Rear Vent application
Starter Kit* - Model 7TDVSKV - Vertical Venting
for 7TDVSKV-A order 1/12 to 6/12 roof pitch
for 7TDVSKV-B order 7/12 to 12/12 roof pitch
for 7TDVSKV-F order flat roof
Starter Kit for Below Grade Installation
Model 7TDVSKS -Snorkel Kit (Twist Lock Pipe)
Model 7FDVSKS -Snorkel Kit (Flex Vent Pipe)
90o Elbow
7TCDV90 - For Rear to Vertical
7TDV90 - For Extended Run
Telescopic vent sections
7TDVP1117 -11” to 17” adjustable length
7TDVP3567 -35” to 67” adjustable length
Pipe sections for vertical or horizontal venting
Model 7TDVP8” - 4 per box
Model 7TDVP12” - 4 per box
Model 7TDVP24” - 4 per box
Model 7TDVP36”
Model 7TDVP48”
Firestop Spacer
Model 7DVFS
Attic Insulation Shield
Model 7DVAIS
Vertical/Horizontal Combination Offset Support
Model 7DVCS
20010175
27
CDV Series Direct Vent Gas Fireplace
1.
2.
Operating Instructions
Glass Information
Only glass approved by CFM Corporation
should be used on this fireplace.
• The use of any non-approved replacement glass will
void all product warranties.
• Care must be taken to avoid breakage of the glass.
• Do not operate appliance with glass front
removed, cracked or broken.
• Replacement glass (complete with gasket) is
available through your CFM Corporation dealer
and should only be installed by a licensed
qualified service person.
Louvre Removal
The top louvre panel
is removed by lifting
the panel vertically and
pulling it away from the
appliance. (Fig. 56) The
lower access door is
removed in the same
manner.
Fig. 56 Remove top louvre
assembly.
Window Frame Assembly Removal
1. Turn the fireplace OFF (including the pilot)
2. If the unit has been operating allow time for the
components to cool.
3. Remove the top louvre assembly.
4. Remove the lower louvre panel.
5. Release the two clamps securing the lower edge of
the window frame assembly by pulling down on the
handles. (Fig. 57)
6. Tilt the window frame assembly out slightly at the
bottom, lift the window frame assembly up and away
from the fireplace.
7. To replace the window frame assembly reverse
the procedure.
Louvre
Glass Panel
FP1602
Lower Clamps
Window
Frame
Window
Frame
Assembly
Fig. 57 Window frame assembly removal.
Push
Clamp
Handle
Assembly
Pull Clamp
Hook
FP1228
Glass Cleaning
It is necessary to periodically clean glass. During startup condensation, which is normal, forms on the inside
of the glass. This condensation causes lint, dust and
other airborne particles to cling to glass surface.
Also initial paint curing may deposit a slight film on
the glass. It is therefore recommended the glass be
cleaned two or three times with a non-ammonia based
household cleaner and warm water (We recommend
gas fireplace glass cleaner) within the first few weeks of
operation.
After the initial cleaning process the glass should be
cleaned two or three times during each operating
season depending on the environment in the house.
Clean glass after first two weeks of
operation.
Do not clean glass when hot.
Do not use abrasive cleaners.
Do not strike or slam the glass.
28
20010175
Logs
L
O
H
I
Turn
counterclockwise
to increase
flame height
Turn clockwise
to decrease
flame height
The 36CDV logs are shipped in place. If a log is broken, refer to the replacement parts list for a replacement. Figure 58 shows where the logs are secured to
the fireplace.
Log Rear
The log rear is
secured to the back
of the fireplace.
The log front is secured to the bottom
of the fireplace.
Ceramic
Hearth
Ember
CDV Series Direct Vent Gas Fireplace
Log Front
LG441
Fig. 58 36CDV logs.
Flame & Temperature Adjustment
RN/RP & EN/EP Models
For units equipped with “HI/LO” valves the flame
adjustment is accomplished by rotating the “HI/LO”
adjustment knob located near the center of the gas
control valve. (Figs. 59)
SIT 820 Valve
Fig. 59 Flame adjustment knob for SIT valve.
Red Glow,
Yellow Tips
Flame Characteristics
It is important to periodically perform a visual check
of the pilot and burner flames. Compare them to the
illustrations. (Figs. 60 & 61)
If the flame patterns appear abnormal contact a
qualified service provider for service and adjustment.
SIT RN/RP
FP1541
Fig. 60 Correct pilot flame appearance.
Yellow Flame
20010175
LG442
Fig. 61 36CDV burner flame appearance.
29
CDV Series Direct Vent Gas Fireplace
P
I
L
O
T
O
F
F
O
F
F
5
4
3
2
1
O
F
F
P
i
l
o
t
3/8" - 1/2"
Lighting and Operating Instructions
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING:If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.
A. This heater has a pilot which must be lit manu
ally. When lighting the pilot follow these instructions exactly.
B. BEFORE LIGHTING smell all around the
heater area for gas. Be sure to smell next to
the floor because some gas is heavier than air
and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any fireplace
• Do not touch any electric switch
• Do not use any phone in your building
• Immediately call your gas supplier from a
neighbor’s phone.
Lighting Instructions
-
Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call
the Fire Department
C. Use only your hand to push in or turn the gas
control knob. Never use tools. If the knob will not
push in or turn by hand, do not try to repair it, call a
qualified service technician. Applying force or any
attempted repair may result in a fire or explosion.
D. Do not use this fireplace if any part has been under
water. Immediately call a qualified service technician to inspect the heater and to replace any part of
the control system and any gas control which has
been under water.
1. STOP! Read the safety information above.
2. Turn off all electrical power to the fireplace.
3. For MN/MP/TN/TP appliances ONLY, go on to
Step 4. For RN/RP appliances turn the ON/OFF
switch to “OFF” position or set thermostat to
lowest level.
4. Open control access panel.
5. Push in gas control knob slightly and turn clockwise to “OFF”.
Euro SIT SIT NOVA
Honeywell
6. Wait five (5) minutes to clear out any gas. Then
smell for gas, including near the floor. If you
smell gas, STOP! Follow “B” in the safety information above. If you do not smell gas, go to the
next step.
7. Remove glass door before lighting pilot. (See
Glass Frame Removal section).
8. Visibly locate pilot by the main burner.
9. Turn knob on gas control counterclockwise
to “PILOT”.
10. Push the control knob all the way in and hold.
Immediately light the pilot by repeatedly depressing the piezo spark ignitor until a flame appears.
Continue to hold the control knob in for about one
(1) minute after the pilot is lit. Release knob and it
will pop back up. Pilot should remain lit. If it goes
out, repeat steps 5 through 8.
• If knob does not pop up when released, stop
and immediately call your service technician or
gas supplier.
• If after several tries, the pilot will not stay lit,
turn the gas control knob to “OFF” and call your
service technician or gas supplier.
11. Replace glass door.
12. Turn gas control knob to “ON” position.
13. For RN/RP appliances turn the ON/OFF switch to
“ON” position or set thermostat to desired setting.
14. Turn on all electrical power to the fireplace.
1. Turn the ON/OFF switch to Off position or set
the thermostat to lowest setting.
2. Turn off all electric power to the fireplace if
service is to be performed.
30
To Turn Off Gas to Fireplace
3. Open control access panel.
4. Push in gas control knob slightly and turn clockwise to “OFF”. Do not force.
5. Close control access panel.
20010175
CDV Series Direct Vent Gas Fireplace
HI
LO
Lighting and Operating Instructions
For Fireplaces equipped with SIT822 Gas Valve (EN or EP)
Warning:If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury and loss of life.
FOR YOUR SAFETY READ THE FOLLOWING WARNINGS
BEFORE LIGHTING THE APPLIANCE
A. This fireplace is equipped with an ignition device
which automatically lights the pilot. DO NOT try to
light the pilot by hand.
B. BEFORE OPERATING, smell all around the
appliance area for gas. Be sure to smell next to
the floor because some gas is heavier than the air
and will settle on the floor.
What to do if you smell gas
• Do not try to light any appliance
• Do not operate any electrical switch.
• Do not use any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone.
Lighting Instructions
1. STOP! Read the safety information above before
continuing.
2. Turn off all electrical power to the appliance.
3. This appliance is equipped with an ignition device
which automatically lights the pilot. DO NOT try to
light the pilot by hand.
4. Access the gas control by lowering the lower
access door (louvre assembly).
Follow the gas suppliers instructions.
• If you cannot contact your gas supplier call
the Fire Department
C. Use only your hand to push in or turn the gas control
knob. Never use tools. If the knob will not push in
or turn by hand do not try to repair it, call a qualified
service technician. Force or attempting repair may
result in a fire or explosion.
D. Do not use this appliance if any part has been under
water. Immediately call a qualified service technician
to inspect the appliance and replace any part of the
control system and any gas control that has been
under water.
5. Turn the remote switch, if used, OFF. Turn the
wireless remote, if used, OFF.
6. Wait five (5) minutes to clear out any gas. Then
smell for gas, including near the floor. If you smell
gas STOP. Follow instructions B in the safety
warnings above. If you do not smell gas go onto the
next step.
7. Close the access door.
8. Turn ON all electrical power to the appliance.
9. Turn remote switch or wireless remote to “ON”.
10. If the appliance will not operate, follow the
instructions TURNING OFF THE GAS TO THE
APPLIANCE and call your service technician or
gas supplier.
Turning Off the Gas to the Appliance
1. Turn the remote switch to the “OFF” position.
2. Turn OFF all electrical power to the fireplace if
service is required.
3 Open the lower access panel.
4. Turn the shut-off valve on the flexible gas line to
the “OFF” position.
20010175
1/2” Gas Supply
1/2” NPT x 1/2” Flare Shut-Off
Valve
Valve in the on position
3/8” Flex Line
(From Valve)
FP297A
31
CDV Series Direct Vent Gas Fireplace
Troubleshooting the Gas Control System
SIT NOVA 820 MILLIVOLT VALVE
NOTE: Before trouble shooting the gas control system, be sure external gas shut off is in the “On” position.
WARNING: BEFORE DOING ANY GAS CONTROL SERVICE WORK, REMOVE GLASS FRONT.
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
1. Spark ignitor will not light A. Defective or misaligned Using a match, light pilot. If pilot lights, turn off
electrode at pilot. pilot and push the red button again. If pilot will not
light - check gap at electrode and pilot-should be
1/8” to have a strong spark.
B. Defective ignitor (Push Button) Push Piezo Ignitor Button. Check for spark at
electrode and pilot. If no spark to pilot, and elec
trode wire is properly connected, replace ignitor.
2. Pilot will not stay lit after A. Defective pilot generator Check pilot flame. Must impinge on thermo
carefully following lighting (thermocouple), remote wall couple/thermopile. Note: this pilot burner assem
instructions. switch. bly utilizes both-a thermocouple and a thermopile.
The thermocouple operates the main valve
operation (On and Off). Clean and or adjust pilot for
maximum flame impingement on thermopile and
thermocouple.
B. Defective automatic valve Turn valve knob to “Pilot”. Maintain flow to pilot;
milivolt meter should read greater than 10 mV. If
the reading is okay and the pilot does not stay on,
replace the gas valve. Note: An interrupter block
(not supplied) must be used to conduct this test.
3. Pilot burning, no gas to A. Wall switch or wires defective Check wall switch and wires for proper connec
main burner tions. Jumper wire accross terminals at wall
switch, if burner comes on, replace defective wall
switch. If okay, jumper wires across wall switch
wires at valve, if burner comes on, wires are faulty
or connections are bad.
B. Thermopile may not be 1. Be sure wire connections from thermopile at
generating sufficient gas valve terminals are tight and thermopile is fully
millivoltage. inserted into pilot bracket.
2. One of the wall switch wires may be grounded.
Remove wall switch wires from valve terminals if
pilot now stays lit, trace wall switch wiring for
ground. May be grounded to fireplace or gas
supply.
3. Check thermopile with millivolt meter. Take
reading at thermopile terminals of gas valve.
Should read 250-300 millivolts (minimum 150)
while holding valve knob depressed in pilot
position and wall switch “Off”. Replace faulty
thermopile if reading is below specified minimum.
C. Plugged burner orifice. Check burner orifices for debris and remove.
D. Defective automatic valve Turn valve knob to “On”, place wall switch to “On”
operator. millivolt meter should read greater than 100 mV. If
the reading is okay and the burner does not come
on, replace the gas valve.
4. Frequent pilot outage A. Pilot flame may be too low Clean and/or adjust pilot flame for maximum flame
problem. or blowing (high) causing the impingement on thermopile and thermocouple.
pilot safety to drop out.
B. Possible blockage of the vent Check the vent terminal for blockage (recycling the
terminal. flue gases)
32
20010175
CDV Series Direct Vent Gas Fireplace
D
E
F
O
F
F
P
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A
B
C
O
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P
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Fuel Conversion Instructions
The conversion of this appliance from one
gas to another must be carried out by an
authorized service provider.
1. Disconnect power to the unit and shut off the gas sup
ply.
2. Remove window frame assembly.
3. Carefully remove the logs & lava rock material.
4. Remove the screws that are holding the burner housing in place.
5. Remove the burner housing assembly. Depending on
the model of the appliance you may have to loosen
the pilot bracket retaining screw/nut to allow the pilot
and bracket assembly to tilt and give enough clearance to remove the burner housing assembly.
6. Remove the main burner orifice and replace it with the
orifice supplied in the conversion kit.
7. SIT top Convertible Pilot
Gently lift off the pilot hood from the pilot. (Do not re-
move the spring clip holding the hood in place). Using
a 5/32” Allen key, unscrew the exposed orifice. Insert
the new orifice supplied in the kit, do not over tighten
the orifice. Replace the pilot hood ensuring the index
tab aligns with the notch on the hood.
8. SIT 820 NOVA Gas Control Valve (Fig. 62)
a. Using a Torx T20 or slotted screwdriver, remove
and save the three pressure regulator mounting
screws (A), pressure regulator tower (B) and
diaphram (C).
b. Ensure the rubber gasket (D) is properly positioned
and install the new HI/LO pressure regulator to the
valve using the new screws (E) supplied with the
kit. Tighten screws securely. (Reference torque - 25
in.LB)
c. Install the enclosed identification label (F) to the
valve body where it can be easily seen.
9. Reassemble the fireplace in the reverse order, except
for the window frame assembly. Leave this off until
after the unit has been checked for leaks and the gas
supply has been bled.
10. After bleeding the gas line and checking for leaks with
a soap solution, replace the window frame assembly.
Fire up the unit, check for flame impingement on the
logs, adjusting them if necessary. Check the manifold
and supply pressures against the appliance specifications.
-
FC107/108
Fig. 62 Nova SIT820 Gas Valve.
The procedure for converting from one gas to
another is the same regardless of the initial
gas used. The only variation is in the orifice
sizes and component part numbers. Your
authorized service provider will ensure the
correct parts are used.
20010175
33
CDV Series Direct Vent Gas Fireplace
Maintenance
Burner and Burner Compartment
It is important to keep the burner and the burner
compartment clean. At least once per year the logs and
lava rock/ember material should be removed and the
burner compartment vacuumed and wiped out. Remove
and refit the logs as per the instructions in this manual.
Always handle the logs with care as they
are fragile and may also be hot if the
fireplace has been in use.
FK12 Fan Assembly
The fan unit requires periodic cleaning. At least once
per month in the operating season open the lower
louvre panels and wipe or vacuum the area around the
fan to remove any build up of dust or lint.
Cleaning the Standing
Pilot Control System
The burner and control system consist of:
• burner • gas orifice
• pilot assembly • thermopile
• millivolt gas valve
Most of these components may require only an
occasional checkup and cleaning and some may
require adjustment. If repair is necessary, it should
be performed by a qualified technician.
1. Turn off pilot light at gas valve.
2. Allow fireplace to cool if it has been operating.
3. Remove window frame assembly. (Refer to Window
Frame Assembly Removal section.)
4. Remove logs.
5. Vacuum burner compartment especially around
orifice primary air openings.
6. Visually inspect pilot. Brush or blow away any dust
or lint accumulation.
7. Reinstall logs.
8. Ignite pilot - Refer to Lighting Instructions.
9. Reinstall window frame assembly.
To obtain proper operation, it is imperative that the pilot
and burner’s flame characteristics are steady, not lifting
or floating.
Typically, the top 3/8” to 1/2” of the thermopile should
be engulfed in the pilot flame. (Refer to Page 59, Figure
60)
To adjust pilot burner: (by qualified service technician)
1. Remove pilot adjustment cap
2. Adjust pilot screw to provide properly sized flame.
3. Replace pilot adjustment cap.
The primary air shutter is set at factory and should
only be adjusted, if necessary, by a qualified service
technician.
34
20010175
CDV Series Direct Vent Gas Fireplace
16
14a,b
13
22
2
6a,b
7
10
11
12
15
17
19
21
20
23
24
25
3
8
18
26
1a
1b
1c
CFM Corporation reserves the right to make changes in design, materials, specifications, prices and discontinue colors and products at any time,
without notice.
CDV
Ref. Description 36CDV
1a. Log Rear Assy 20010340
1b. Log Middle Assy 20010341
1c. Ceramic Hearth Ember 20010342
2. Hood 20010312
3. Burner Tube 20010333
4. Orifice Burner - Natural (not shown) 72386
5a. Orifice Pilot - Natural (not shown) 10002268
5b. Orifice Pilot - Propane (not shown) 10002269
6a. PIlot Assy SIT - RN 20010203
6b. Pilot Assy SIT - RP 20010202
7. Pilot Tubing w/Fittings SIT 10001296
8. Pilot Hood 10002385
9. Manifold Tubing (not shown) 20010162
10. Thermocouple - RN/RP 53373
11. Thermopile - RN/RP 51827
12. Electrode Ignitor w/Cable RN/RP 10001297
13. Ignitor Piezo SIT 820 Valve 52464
14a. Valve SIT 820 - RN 52677
14b. Valve SIT 820 - RP 52678
20010175
35
CDV Series Direct Vent Gas Fireplace
CDV (continued)
Ref. Description 36CDV
15. Flexible Gas Line w/ON/Off Shut-Off Valve 20002500
16. Fan Assy (FK12 Option) ZA1110
17. Electrical Cord (6 ft.) 51865
18. Door Assy 20010207
19. Glass w/Gasket 10010206
20. Gasket Glass 10000992
21. Frame Window 20010320
22. Clamp Frame Window 10000949
23. Top Louvre Assy 20010179
24. Bottom Louvre Assy 20010179
25. ON/OFF Switch 51842
26. Grommet 20010348
27. Wire/Bushing Assy (not shown) 20010346
Fuel Conversion Kits
Conversion Kit, NG to LP
36CDV Kit # 20010507
36
20010175
CDV Series Direct Vent Gas Fireplace
Optional Accessories Available
Fan Kits
FK12
This auxiliary fan system increases the efficiency of the
circulation of the heating air.
The FK12 Fan Assembly is a fixed speed fan system
and does not allow for variable speed control.
Specifications
115 Volts / 60 Hz / 56 Watts.
Maintenance
The fan itself does not require regular maintenance,
however periodic cleaning of the fan and the
surrounding area is required.
Check the area under the control door (lower louvre
assembly) and in front of the fan and wipe or vacuum
this area at least once a month during the operating
season.
Installation
The fan assembly is supplied fully wired eliminating
the need for a licensed electrician to carry out the
installation.
1. Remove the lower Louvre assembly. Move the
fan & bracket assembly around the gas valve and
lines to locate the unit against the back wall of the
appliance, resting on the base.
2. With the protective cover removed from the selfadhesive ‘Velcro’ strips apply mild pressure to the
fan & bracket unit to secure the strips to the metal
panels. No further securing is required.
3. Power to the fan can be supplied by plugging the
supplied lead into a conveniently located wall socket
or by using the receptacle in the bottom of the unit.
Wiring Instructions
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 Electric Code.
For USA installations follow the local codes
and the national electrical code ANSI/NFPA
No. 70.
Should this fan require servicing or repair
the power supply must be disconnected.
Any electrical rewiring of this fan must be
done by a licensed electrician.
Remote Controls
Optional remote control units are available to control
different functions of the appliances
Model Function/s Controlled
RCI ON/OFF
RC2 ON/OFF and Temperature
MRC3 ON/OFF and Temperature
control with a digital display
and programmable 24 hour clock
IMT Wall mounted thermostat control
(must be used in bedroom installations)
Fan
FP1602
Fig. 63 FK12 fan placement.
20010175
Gas Lines
Receptacle
Valve
37
CDV Series Direct Vent Gas Fireplace
38
20010175
LIMITED LIFETIME WARRANTY
CDV Series Direct Vent Gas Fireplace
PRODUCT COVERED BY THIS WARRANTY
All Vermont Castings gas stoves, gas inserts, and gas fireplaces, and all Majestic or Northern Flame brand gas fireplaces
equipped with an Insta-Flame Ceramic Burner, or standard steel tube burner.
BASIC WARRANTY
CFM Corporation (hereinafter referred to collectively as the Company)
warrants that your new Vermont Castings or Majestic Gas Fireplace/
Stove is free from manufacturing and material defects for a period of
one year from the date of purchase, subject to the following conditions
and limitations.
EXTENDED LIFETIME WARRANTY
The heat exchanger, where applicable, and combustion chamber
of every Vermont Castings or Majestic gas product is warranted for
life against through wall perforation. All appliances equipped with an
Insta-Flame Ceramic Burner have limited lifetime coverage on the
ceramic burner plaque. Warrantees are made to the original owner
subject to proof of purchase and the conditions and limitations listed
on this Warranty Document
COMPONENT WARRANTY
CAST IRON: All external and internal cast iron parts are warranted for a
period of three years.
Note: On porcelain enamel finished external parts and accessories The
Company offers no Warranty on chipping of enamel surfaces. Inspect
all product prior to accepting it for any damage to the enamel.
The salt air environment of coastal areas or a high humidity environment
can be corrosive to the porcelain enamel finish. These conditions can
cause rusting of the cast iron beneath the porcelain enamel finish,
which will cause the finish to flake off.
Dye lot variations with replacement parts and/or accessories can occur
and are not covered by warranty.
GLASS DOORS: Glass doors are covered for a period of one year.
Glass doors are not warranted for breakage due to misuse or accident.
Glass doors are not covered for discoloration or burned in stains due to
environmental issues, or improper cleaning and maintenance.
BRASS PLATED PARTS AND ACCESSORIES: Brass parts should be
cleaned with Lemon oil only.
mix and masonry cleaners may corrode the brass finish. The Company
will not be responsible for, nor will it warrant any brass parts which are
damaged by external chemicals or down draft conditions.
GAS VALVES: Gas valves are covered for a period of one year
ELECTRONIC AND MECHANICAL COMPONENTS: Electronic and
mechanical components of the burner assembly are covered for one year.
All steel tube burners are warranted for one year.
ACCESSORIES: Unless otherwise noted all components and CFM
Corporation company supplied accessories are covered for a period of
one year.
CONDITIONS AND LIMITATIONS
• This new Vermont Castings or Majestic product must be installed by
a competent, authorized, service contractor. A licensed technician, as
prescribed by the local jurisdiction must perform any installation/service
work. It must be installed and operated at all times in accordance with
the Installation and Operating instructions furnished with the product.
Any alteration, willful abuse, accident, or misuse of the product shall
nullify this warranty.
• This warranty is non-transferable, and is made to the original owner,
provided that the purchase was made through an authorized supplier
of the Company.
• The customer must pay for any Authorized Dealer in-home travel fees
or service charges for in-home repair work. It is the dealers option
whether the repair work will be done in the customer’s home or in the
dealer’s shop.
• If upon inspection, the damage is found to be the fault of the manufacturer,
repairs will be authorized at no charge to the customer parts and/or
labor.
Brass cleaners cannot be used. Mortar
• Any part and/or component replaced under the provisions of this
warranty is covered for six months or the remainder of the original
warranty, whichever is longest.
• This warranty is limited to the repair of or replacement of part(s) found
to be defective in material or workmanship, provided that such part(s)
have been subjected to normal conditions of use and service, after
said defect is confirmed by the Company’s inspection.
• The company may, at its discretion, fully discharge all obligations
with respect to this warranty by refunding the wholesale price of the
defective part(s)
• Any installation, labor, construction, transportation, or other related
costs/expenses arising from defective part(s), repair, replacement,
or otherwise of same, will not be covered by this warranty, nor shall
the Company assume responsibility for same. Further, the Company
will not be responsible for any incidental, indirect, or consequential
damages except as provided by law.
• SOME STATES DO NOT ALLOW FOR THE EXCLUSION OR
LIMITATIONS OF INCIDENTAL AND CONSEQUENTIAL DAMAGES
OR LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY
LASTS, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOUR
CIRCUMSTANCES. THIS WARRANTY GIVES YOU SPECIFIC
RIGHTS AND YOU MAY HAVE OTHER RIGHTS WHICH VARY FROM
STATE TO STATE.
• All other warranties-expressed or implied- with respect to the product,
its components and accessories, or any obligations/liabilities on the
part of the Company are hereby expressly excluded.
• The Company neither assumes, nor authorizes any third party to
assume on its behalf, any other liabilities with respect to the sale of
this Vermont Castings or Majestic product
• The warranties as outlined within this document do not apply to
chimney components or other non CFM Corporation accessories used
in conjunction with the installation of this product..
• Damage to the unit while in transit is not covered by this warranty but
is subject to claim against the common carrier. Contact the dealer
from whom you purchased your fireplace/stove (do not operate the
appliance as this might negate the ability to process the claim with the
carrier).
• The Company will not be responsible for:
a) Down drafts or spillage caused by environmental conditions such
as near-by trees, buildings, roof tops, hills, or mountains.
b) Inadequate ventilation or negative air pressure caused by
mechanical systems such as furnaces, fans, clothes dryers, etc.
• This warranty is void if:
a) The fireplace has been operated in atmospheres contaminated by
chlorine, fluorine, or other damaging chemicals.
b) The fireplace has been subjected to prolonged periods of dampness
or condensation
c) Any damages to the fireplace, combustion chamber, heat exchanger
or other components due to water, or weather damage, which is the
result of but not limited to, improper chimney/venting installation.
d) Any alteration, willful abuse, accident, or misuse of the product
has occurred.
IF WARRANTY SERVICE IS NEEDED…
1) Contact your supplier. Make sure you have your warranty,
your sales receipt, and the model/serial number of your CFM
Corporation product.
2) D O NOT ATTE MPT TO DO A NY S E RVIC E WORK
YOURSELF.
20010175
39
Efficiency Ratings
Model EnerGuide Ratings Steady State (%) D.O.E.
Fireplace Efficiency (%) Fan-OFF Fan-ON (AFUE%)
36CDVRRN 66.9 76 76.5 63
36CDVRRP 66.9 77 78 63
CFM Corporation
2695 Meadowvale Blvd. • Mississauga, Ontario, Canada L5N 8A3
800-668-5323 • www.cfmcorp.com
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