Vermont Castings DVRT41 Mounting instructions

Homeowner's Installation and
Operating Manual
INSTALLER: DO NOT DISCARD THIS MANUAL - LEAVE FOR HOMEOWNER
Direct Vent
Model: DVRT41
DO NOT STORE OR USE
GASOLINE OR OTHER FLAM-
MABLE VAPORS AND LIQUIDS
IN THE VICINITY OF THIS OR
ANY OTHER APPLIANCE.
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.
WARNING!
IF THE INFORMATION IN THIS
MANUAL IS NOT FOLLOWED
EXACTLY, A FIRE OR EXPLO-
SION MAY RESULT CAUSING
PROPERTY DAMAGE, PER-
SONAL INJURY OR LOSS OF
LIFE.
PLEASE READ THIS MANUAL
BEFORE INSTALLING AND
USING APPLIANCE
INSTALLER/CONSUMER
SAFETY INFORMATION
CERTIFIED
D
E
S
I
G
N
C
E
R
T
I
F
I
E
D
FOR YOUR SAFETY
Installation and service must
be performed by a qualified
installer, service agency or
the gas supplier.
10006740 1/05 Rev. 2
410 Admiral Blvd. • Mississauga, Ontario, Canada L5T 2N6 • 905-670-7777
www.majesticproducts.com • www.vermontcastings.com
CFM Specialty Home Products

2
DVRT41 Direct Vent Gas Fireplace
10006740
Installation & Operating Instructions ........................................................................................................... 3
Locating Your Fireplace .................................................................................................................... 3
Fireplace Dimensions........................................................................................................................ 4
Clearance to Combustibles ............................................................................................................... 6
Mantels ............................................................................................................................................ 6
Hearth ............................................................................................................................................ 6
Framing & Finishing .......................................................................................................................... 7
Final Finishing ................................................................................................................................... 7
Gas Specifications ............................................................................................................................ 7
Gas Inlet and Manifold Pressures ..................................................................................................... 7
High Elevations ................................................................................................................................. 7
Gas Line Installation.......................................................................................................................... 7
Remote ON/OFF Switch Installation ................................................................................................. 8
Alternate Switch Location.................................................................................................................. 8
EB-1 Electrical Box ........................................................................................................................... 8
Optional Top Vent Application........................................................................................................... 9
General Venting
General Venting .............................................................................................................................. 10
General Venting Information - Termination Location ...................................................................... 11
General Information Assembling Vent Pipes .................................................................................. 12
Flex Vent Pipes ............................................................................................................................... 12
Twist Lock Pipes ............................................................................................................................. 13
How to Use the Vent Graph ............................................................................................................ 13
Rear Wall Vent Application & Installation ........................................................................................ 13
Vertical Sidewall Application & Installation...................................................................................... 15
Below Grade Installation ................................................................................................................. 19
Vertical Through-the-Roof Application & Installation....................................................................... 19
Venting Components....................................................................................................................... 22
Operating Instructions
Glass Information ............................................................................................................................ 23
Louvre Removal .............................................................................................................................. 23
Window Frame Assembly Removal ................................................................................................ 23
Glass Cleaning ................................................................................................................................ 23
Replacement of Ceramic Hearth Panels ......................................................................................... 23
Installation of Logs .......................................................................................................................... 24
Burner Lava Rock Placement ......................................................................................................... 24
Large Lava Rock ............................................................................................................................. 24
Flame & Temperature Adjustment ..................................................................................................24
Flame Characteristics...................................................................................................................... 25
Inspecting the Venting System........................................................................................................ 25
Lighting and Operating Instructions (Honeywell Gas Valve) ........................................................... 26
Lighting and Operating Instructions (SIT Valve) ............................................................................. 27
Instructions for RF Comfort Valve ................................................................................................... 28
Troubleshooting Gas Control (Honeywell Gas Valve)..................................................................... 32
Troubleshooting Gas Control (SIT 820 Millivolt Gas Valve) ............................................................ 33
Troubleshooting Gas Control (SIT 822 Valve w/Honeywell Ignitor) ................................................ 34
Fuel Conversion Instructions........................................................................................................... 35
Maintenance
Cleaning the Standing Pilot Control System ................................................................................... 38
Replacement Parts ....................................................................................................................................... 39
Optional Accessories
Fan Kits ........................................................................................................................................... 43
Hard (Direct) Wire Hook Up ............................................................................................................ 43
Remote Controls ............................................................................................................................. 44
Ceramic Refractory Panels ............................................................................................................. 44
Decorative Bay Windows ................................................................................................................ 44
Decorative Frame Trim.................................................................................................................... 44
For Use in Mobile Homes: Model DVRT41RMH ......................................................................................... 45
Warranty ........................................................................................................................................................ 47
Energuide ...................................................................................................................................................... 48
PLEASE READ THE INSTALLATION & OPERATING INSTRUCTIONS BEFORE USING APPLIANCE.
Thank you and congratulations on your purchase of a CFM Specialty Home Products fireplace.
IMPORTANT: Read all instructions and warnings carefully before starting installation. Failure to follow these
instructions may result in a possible fire hazard and will void the warranty.
Table of Contents

3
DVRT41Direct Vent Gas Fireplace
10006740
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’ (610cm). 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“ (153mm)
clearance must be maintained from the perpendicular wall and
the front of the fireplace.
This gas appliance should be installed by a qualified installer
in accordance with local building codes and with current CSA-
B149.1 Installation codes for Gas Burning Appliances and
Equipment. If the unit is being installed in a mobile home, the
installation should comply with the current CAN/CSA Z 240.4
code. For U.S.A Installations follow local codes and/or the
current National Fuel Gas Code. ANSI Z223.1/NFPA 54.
FOR SAFE INSTALLATION AND OPERATION
PLEASE NOTE THE FOLLOWING:
1 . This fireplace gives off high temperatures and should be
located out of high traffic areas and away from furniture
and draperies.
2. Children and adults should be alerted to the hazards of
the high surface temperatures of this fireplace and should
stay away to avoid burns or ignition of clothing.
3. Children should be carefully supervised when in the same
room as your fireplace.
4. Under no circumstances should this fireplace be modified.
Parts removed for servicing should be replaced prior to
operating this fireplace again.
5. Installation and any repairs to this fireplace must be
performed by a qualified installer, service agency or gas
supplier. A professional service person should be con-
tacted to inspect this fireplace annually. Make it a practice
to have all of your gas fireplaces checked annually. More
frequent cleaning may be required due to excess lint and
dust from carpeting, bedding material, etc.
6. Control compartments, burners and air passages in this
fireplace should be kept clean and free of dust and lint.
Make sure the gas valve and pilot light are turned off
before you attempt to clean this fireplace.
7. The venting system (chimney) of this fireplace should be
checked at least once a year and if needed your venting
system should be cleaned.
8. Keep the area around your fireplace clear of combustible
materials, gasoline and other flammable vapor and liquids.
This fireplace should not be used as a drying rack for
clothing, nor should Christmas stocking or decorations be
hung in the area of it.
9. Under no circumstances should any solid fuels (wood,
coal, paper or cardboard etc.) be used in this fireplace.
10. The flow of combustion and ventilation air must not be
obstructed in any way.
11. When fireplace is installed directly on carpeting, vinyl tile
or any combustible material other than wood, this fireplace
must be installed on a metal or wood panel extending the
full width and depth of the fireplace.
12. This fireplace requires adequate ventilation and
combustion air to operate properly.
13. This fireplace must not be connected to a chimney flue
serving a separate solid fuel burning fireplace.
14. When the fireplace is not in use it is recommended that
the gas valve be left in the OFF position.
Installation & Operating Instructions
Locating Your Fireplace
Proposition 65 Warning: Fuels used in gas,
woodburning or oil fired appliances, and the products of
combustion of such fuels, contain chemicals known to
the State of California to cause cancer, birth defects
and other reproductive harm.
California Health & Safety Code Sec. 25249.6
This appliance may be installed in an aftermarket
permanently located, manufactured home or mobile
home, where not prohibited by local codes.
This appliance is only for use with the type of gas indi-
cated on the rating plate. This appliance is not
convertible for use with other gases, unless a certified
kit is used.
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
Remove any plastic from trim parts before turning the
fireplace ON.
It is normal for fireplaces fabricated of steel to give off
some expansion and/or contraction noises during the
start up or cool down cycle. Similar noises are found
with your furnace heat exchanger or car engine. It is
not unusual for your CFM Specialty Home Products
company gas fireplace to give off some odor the first
time it is burned. This is due to the manufacturing
process.
Please ensure that your room is well ventilated
-open all windows.
It is recommended that you burn your fireplace for at
least ten (10) hours the first time you use it. If the
optional fan kit has been installed, place the fan switch
in the “OFF” position during this time.
Fig. 1 Locating Gas Fireplace
LU584-1
YEAB
C
D
F
YB
X

4
DVRT41 Direct Vent Gas Fireplace
10006740
Ref. DVRT41
A41” (1041mm)
B37” (940mm)
C36” (914mm)
D24¹⁄₂”(622mm)
E7”(178mm)
F6”(152mm)
G1¹⁄₄”(32mm)
H19¹⁄₂”(495mm)
I5¹⁄₂”(140mm)
J25” (635mm)
K5/8” (16mm)
L10³⁄₄”(273mm)
M2”(51mm)
N7⁵⁄₈”(194mm)
O1⁷⁄₈”(48mm)
P7”(178mm) Dia.
Q4”(102mm) Dia.
Framing Dimensions
R41¹⁄₂”(1054mm)
S41¹⁄₄”(1048mm)
T19¹⁄₂”(495mm)
U62¹⁄₄”(1581mm)
V44” (1118mm)
W31³⁄₄”(807mm)
Fireplace Dimensions (Installed as Top Vent)
Fig. 2 Fireplace specifications and framing dimensions.
S - Rough Opening Width
Rough
Opening
Height
Electrical
Access
Rough
Opening
Depth
Gas Line
Access
V
V
WK
U
T
H
I
JP
Q
K
O
N
F
D
E
G
G
A
R
M
L
B
Recessed
Nailing Flange

5
DVRT41Direct Vent Gas Fireplace
10006740
Fireplace Dimensions (Installed as Rear Vent)
H
R - Rough Opening Width
Gas Line
Access
Rough
Opening
Height
Electrical
Access
Rough
Opening
Depth
U
U
V
T
J
S
I
J
P
O
N
M
G
F
D
E
G
A
Q
L
K
B
Recessed
Nailing Flange
Ref. DVRT41
A41” (1041mm)
B37” (940mm)
C36” (914mm)
D24¹⁄₂”(622mm)
E7”(178mm)
F6”(152mm)
G1¹⁄₄”(32mm)
H19¹⁄₂”(495mm)
I25” (635mm)
J5/8” (16mm)
K10³⁄₄”(273mm)
L2”(51mm)
M7⁵⁄₈”(194mm)
N1⁷⁄₈”(48mm)
O31¹³⁄₁₆”(808mm)
P32⁹⁄₁₆”(827mm)
Framing Dimensions
Q41¹⁄₂”(1054mm)
R41¹⁄₄”(1048mm)
S19¹⁄₂”(495mm)
T62¹⁄₄”(1581mm)
U44” (1118mm)
V31³⁄₄”(807mm)
Fig. 3 Fireplace specifications and framing dimensions.

6
DVRT41 Direct Vent Gas Fireplace
10006740
Mantels
The height that a combustible mantel is fitted above
the fireplace is dependent on the depth of the mantel.
This also applies to the distance between the mantel
leg (if fitted) and the fireplace.
For the correct mounting height and widths, refer to
Figures 4a, 4b and the Mantel Chart below.
The distances and reference points are not affected by
the fitting of a bay window front trim kit.
Noncombustible mantels and legs may be installed at
any height and width around the appliance. When
using paint or lacquer, it must be heat resistant to
prevent discoloration.
Clearance to Combustibles
Top of unit to ceiling.................................36” (914mm)
Front of unit to combustibles ...................36” (914mm)
Appliance
Top of standoff ........................................0” (0mm)
Bottom .....................................................0” (0mm)
Side .........................................................0” (0mm)
Back.........................................................0” (0mm)
Venting
Concentric sections of DV Vent...................1” (25mm)
Nonconcentric sections of DV Vent
Sides and bottom ..................................1” (25mm)
Top ........................................................2” (51mm)
J
F
G
H
I
Mantel
Leg
Black
Surround
Face
CFM164a
O
NM
L
K
Side of
Combustion Chamber
CFM170
Fig. 4b Combustible mantel leg minimum installation.
Mantel Mantel Leg from Side
Ref. Leg Depth Ref. of Comb. Opening
F10” (254mm) K 11¹⁄₂” (292mm)
G8” (203mm) L 9¹⁄₂” (241mm)
H6” (152mm) M 7¹⁄₂” (191mm)
I4” (101mm) N 5¹⁄₂” (140mm)
J2” (51mm) O 3¹⁄₂’” (89mm)
Hearth
A hearth is not mandatory, but is recommended for
aesthetic purposes. We recommend a noncombustible
hearth which projects out 12” (305mm) 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 insu-
lated to conform to applicable insulation
codes.
ABCDE
V
W
X
Y
Z
Fireplace
Louvre
Assembly Top
Top of Combustion
Chamber
Bottom of Door Trim
CFM146
Fig. 4a Combustible mantel minimum installation.
Mantel Chart
Mantel Shelf Mantel from Top
Ref. or Breast Plate Ref. of Comb. Chamber
Depth
V10” (254mm) A 19” (483mm)
W8” (203mm) B 17” (432mm)
X6” (152mm) C 15” (381mm)
Y4” (101mm) D 13” (330mm)
Z 2” (51mm) E 11” (279mm)
Maintain minimum 3/4”
(19mm) clearance to
combustible

7
DVRT41Direct Vent Gas Fireplace
10006740
Framing And Finishing
Check fireplace to make sure it is lev-
elled 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.
Final Finishing
Noncombustible materials such as brick or tile can be
extended over the edges of the face of the fireplace. Do
not cover the window frame assembly, any vent,
louvre assembly top or louvre assembly bottom. If a
Trim Kit is to be installed, brick and tile will have to be
installed flush with the side of this appliance.
DVRT41
Certified To
ANSI Z21.88-2002/CSA 2.33-2002
Vented Gas Fireplace Heater
Gas Inlet and Manifold Pressures
Natural LP (Propane)
Minimum Inlet Pressure 5.5” w.c. 11.0” w.c.
Maximum Inlet Pressure 14.0” w.c. 14.0” w.c.
Manifold Pressure 3.5” w.c. 10.0” w.c.
Gas Specifications
MAX. MIN.
GAS INPUT INPUT
MODEL FUEL CONTROL B.T.U.H B.T.U.H.
DVRT41RN Natural Gas Millivolt Hi/Lo 36,000 25,200
DVRT41RP Propane Millivolt Hi/Lo 36,000 27,000
DVRT41RFN Natural Gas Comfort Control 36,000 25,200
DVRT41RFP Propane Comfort Control 36,000 27,000
DVRT41EN Natural Gas 24 Volt Hi/Lo 36,000 25,200
DVRT41EP Propane 24 Volt Hi/Lo 36,000 27,000
High Elevations
Input ratings are shown in BTU per hour and are
certified without deration for elevations up to
4,500 feet (1,370m) above sea level.
For elevations above 4,500 feet (1,370m) in USA,
installations must be in accordance with the
current ANSI Z223.1/NFPA 54 and/or local codes
having jurisdiction.
In Canada, please consult provincial and/or local
authorities having jurisdiction for installations at
elevations above 4,500 feet (1,370m).
Gas Line Installation
When purging gas line the front glass
must be removed.
The gas pipeline can be brought in through the right
side of the appliance. Knockouts are provided at
convenient locations to allow for the gas pipe installa-
tion and testing of any gas connection.
The gas line connection can be made with properly
tinned 3/8" copper tubing, 1/2" rigid pipe or an approved
flex connector. Since some municipalities have
additional local codes, it is always best to consult your
local authority and the CSA-B149.1 installation codes.
For USA installations consult the current National Fuel
Gas Code, ANSI Z223.1/NFPA 54.
AB
Fig. 5 Drywall flange location.
Flange Location for
Desired Drywall Depth
Flange Drywall
Position Depth
A1/2” / 13mm
B5/8” / 16mm
FP1539

8
DVRT41 Direct Vent Gas Fireplace
10006740
Remote ON/OFF Switch Installation
Do not wire the remote ON/OFF wall
switch for this gas appliance into a 120v
power supply.
1. Thread wire through the electrical knockout located
on either side of the unit. Take care not to cut the
wire or insulation on metal edges. Ensure the wire is
secured and protected from possible damage. Run
one end of the gas control valve and the other end
to the conveniently located wall switch.
2. Attach the wire to the ON/OFF switch and install
switch into receptacle box. Attach cover plate to
switch.
3. Connect wiring to gas valve. (Fig. 7)
FP1024
Fig. 8 Alternate switch location.
Always check for gas leaks with a mild
soap and water solution applied with a
brush no larger than 1” (25mm). Never
apply soap and water solution with a
spray bottle. Do not use an open flame
for leak testing.
The fireplace valve must not be sub-
jected to any test pressures exceeding
1/2 psi. Isolate or disconnect this or any
other gas appliance control from the gas
line when pressure testing.
The gas control is equipped with a captured screw type
pressure test point, therefore it is not necessary to
provide a 1/8" test point up stream of the control.
When using copper or flex connector use only ap-
proved fittings. Always provide a union when using
black iron pipe so that the gas line can be easily
disconnected for burner or fan servicing. (Fig. 6) See
the gas specifications for pressure details and ratings.
Alternate Switch Location
The remote switch can be installed on either side of the
access door. Mount the switch to the switch bracket
provided. Screw the bracket on either side of the
frame, line up the screws with the prepunched holes.
(Fig. 8)
EB-1 Electrical Box
The fireplace, when installed, must be
electrically connected and grounded in
accordance with local codes or, in the
absence of local codes, with the current
CSA C22.1 Canadian Electrical Code.
For USA installations, follow the local
codes and the national Electrical Code
ANSI/NFPA No. 70.
It is strongly suggested that the wiring of
the EB-1 Electrical Junction Box be
carried out by a licensed electrician.
Ensure that the power to the supply line
has been disconnected before commenc-
ing this procedure.
1/2” Gas Supply
1/2” NPT x 3/8” Flare Shut-off
Valve 3/8” Flex Line
(from valve)
FP297a
Fig. 6 Typical gas supply installation.
TPTH TH
TP
FP1218
Remote
ON/OFF
Switch
Fig. 7 Remote switch wiring diagram for R models.

9
DVRT41Direct Vent Gas Fireplace
10006740
The EB-1 electrical junction box has been supplied
standard on the DV360/580 models to allow for the
easy installation of an optional fan kit.
To connect the EB-1 box to the house electrical supply,
follow the steps below.
1. Unscrew the retaining screw from the EB-1 base
plate (Fig. 9) and remove the EB-1 assembly from
the fireplace.
2. Remove the front cover of the EB-1 box.
3. Remove the plug socket assembly from the EB-1
box.
4. Feed the supply line in from the outside through the
cable clamp. (Fig. 9)
5. Connect black wire of the power supply line to the
brass screw (polarized) of the socket assembly.
6. Connect the white wire of the power line to the
chrome screw of the socket assembly.
7. Connect the ground wire of the supply line to the
green screw of the socket assembly.
8. Refit the socket assembly back into the electrical
box and replace the cover plate. Secure the cable
with the clamp on the outside of the unit to prevent
strain on the connections.
9. The EB-1 electrical junction box is now ready to
supply power to the FK12 or FK24 fan kits if fitted.
Optional Top Vent Application
The DVRT41 fireplace is shipped as a rear vent unit. If
the layout requires a top vent, convert the unit following
the steps below.
1. Remove the 10 screws securing outer collar adapter
to fireplace. (Fig. 10)
2. Set outer collar adapter aside.
3. Remove insulation from top of unit and discard.
Remove the four (4) screws securing flue cover to
top of unit and remove flue cover. (Fig. 11)
Flue
Pipe
Remove
Screws
(5)
Outer Collar
Adapter
Remove
Screws (5) FP1030
Rear View
Fig. 10 Remove screws from outer collar adapter.
FP580
Fig. 9 EB-1 receptacle.
OUTSIDE
ELECTRICAL BOX
FRONTOFUNIT
INSIDE
FRONT OF UNIT
4. Remove the four (4) screws securing flue pipe to
back of unit. Remove flue pipe. (Fig. 11)
5. Secure flue cover to back of flue outlet. Be sure to
replace gasket. (Fig. 12)
6. Install flue pipe and gasket removed in step 4 to top
of unit with four (4) screws. Be sure to replace
gasket. (Fig. 12)
7. Secure outer collar adapter to unit with the round
collar on top, secure with 10 screws.
NOTE: Be sure not to damage any gasket material.
CAUTION: Remove insulation. Insulation extends
beyond opening in top of unit. Be sure
to remove all insulation before complet-
ing conversion. Insulation measures
9¹⁄₄” x 22³⁄₄” (235mm x 578mm). If the
unit is converted back to a rear vent, the
insulation (Part #20003129) must be
replaced.
Fig. 11 Remove flue cover and flue pipe.
Remove
Screws (4)
Remove Screws (4)
Flue
Cover
Flue
Pipe
FP1027
Insulation

10
DVRT41 Direct Vent Gas Fireplace
10006740
FP1031
Fig. 13 Completed conversion.
After conversion to top vent configura-
tion, the 4” (102mm) flue pipe should be
concentric within the 7” (175mm) outer
collar.
Your fireplace is approved to be vented either through
the side wall, or vertical through the roof.
•Only CFM Corporation venting components
specifically approved and labelled for this fire-
place may be used.
•If vent terminal is installed in an accessible location,
Vent Termination Guard #53525 shall be installed.
•Venting terminals shall not be recessed into a wall or
siding.
•Horizontal venting which incorporates the twist lock
pipe must be installed on a level plane without an
inclining or declining slope.
•Horizontal venting which incorporates the use of flex
venting shall have an inclining slope from the unit of
1/2” (13mm) per 12” (305mm).
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 termi-
nation area after snow falls, and clear to prevent acci-
dental blockage of venting system. When using snow
blowers, make sure snow is not directed towards vent
termination area.
Location of Vent Termination
It is imperative the vent termination be located observ-
ing the minimum clearances as shown on following
page.
General Venting
Flue Cover
Replace
Screws (4)
Flue Pipe
FP1028
Fig. 12 Replacing flue cover and flue pipe.
Replace
Screws (4)