Vermont Casting 20DVT User Manual

INSTALLER/CONSUMER

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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.

Brookhaven
Direct Vent Model:
20DVT

Installation Instructions and

Homeowner’s Manual

DO NOT STORE OR USE
GASOLINE OR OTHER
FLAMMABLE VAPORS AND
LIQUIDS IN THE VICINITY OF
THIS OR ANY OTHER
APPLIANCE.

INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.

10009459 2/07 Rev. 5

Brookhaven 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 ................................................................................................. 5

Mantels ...............................................................................................................................5

Hearth ...............................................................................................................................5

Framing and Finishing ......................................................................................................... 6

Final Finishing ..................................................................................................................... 6

Gas Specifications ...............................................................................................................6

Gas Inlet and Manifold Pressures ....................................................................................... 6

High Elevations ...................................................................................................................6

Gas Line Installation ............................................................................................................ 6

General Venting Information

General Venting ...................................................................................................................7

General Venting Information-Termination Location .............................................................8

General Information Assembling Vent Pipes ....................................................................... 9

Flex Vent Pipes ...................................................................................................................9

Twist Lock Pipes ................................................................................................................10

How to Use the Vent Graph ...............................................................................................10

Vertical Sidewall Applications & Installation ...................................................................... 10

Below Grade Installation ...................................................................................................13

Vertical Through-the-Roof Applications & Installation ...................................................... 14

Venting Components ......................................................................................................... 16

Operating Instructions

Glass Information ..............................................................................................................17

Cast Front Removal .........................................................................................................17

Window Frame Assembly Removal ...................................................................................17

Glass Cleaning ..................................................................................................................17

Installation of Logs and Lava Rock ...................................................................................18

Flame & Temperature Adjustment ..................................................................................... 19

Flame Characteristics ........................................................................................................19

Inspecting the Venting System .......................................................................................... 19

Lighting and Operating Instructions ...................................................................................20

Troubleshooting .................................................................................................................21

Fuel Conversion Instructions ............................................................................................. 22

Maintenance

Cleaning the Standing Pilot Control System .....................................................................24

Replacement Parts .....................................................................................................................25

Optional Accessories

Remote Controls ...............................................................................................................27

Ceramic Refractory Panels ...............................................................................................27

Warranty ....................................................................................................................................... 31

Energuide ..................................................................................................................................... 32

2

10009459

Brookhaven Direct Vent Gas Fireplace

Y

E

A

B

C

D

F

Y

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
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 per
formed by a qualified installer, service agency or gas sup­plier. A professional service person should be contacted to
inspect this fireplace annually. Make it a practice to have
all of your gas fireplaces checked annually. More frequent
cleaning may be required due to excess lint and dust from
carpeting, bedding material, etc.

6. Control compartments, burners and air passages in this fire­place should be kept clean and free of dust and lint. Make
sure the gas valve and pilot light are turned off before you
attempt to clean this fireplace.

7. The venting system (chimney) of this fireplace should be
checked at least once a year and if needed your venting
system should be cleaned.

8. Keep the area around your fireplace clear of combustible
materials, gasoline and other flammable vapor and liquids.
This fireplace should not be used as a drying rack for cloth
ing, nor should Christmas 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.

WARNING: Check with your electronics manufacturer
before installing a television or other electronic de­vice above this fireplace.

10009459 3

-

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.

IMPORTANT:

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.

Locating Your Fireplace

-

LU584-R

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’ (610 cm). See details in Venting Section.

* When you install your fireplace in(D) Room divider or (E) Flat
on wall corner positions (Y), a minimum of 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.

Brookhaven Direct Vent Gas Fireplace

O - Rough Opening Width

K

F

Q

Rough
Opening Depth

E

5/8” (16 mm)

L

L

N

M

J

P

Rough
Opening
Height

D

C

A

B

G

I

H

Gas Line
Access

Electrical Access

No drywall in this area.
Must use noncombustible
wall board such as DuraRock.

20DVT Fireplace Dimensions

Fig. 2 Fireplace specifications and framing dimensions.

Ref. 20DVT
A 20” (508 mm)

B 29
C 13
D 19
E 14
F 15” (381 mm)
G 1
H 4
I 6
J 32
K 8” (203 mm)

L 31
M 44
N 23
O 21

¹⁄₂” (749 mm)
¹⁄₂” (343 mm)
³⁄₄” (502 mm)
³⁄₄” (375 mm)

¹⁄₂” (38 mm)
¹⁄₄” (108 mm)
³⁄₄” (171 mm)

¹⁄₂” (826 mm)

Framing Dimensions

³⁄₄” (806 mm)
⁷⁄₈” (1140 mm)
¹⁄₈” (587 mm)
¹⁄₄” (540 mm)

P 34” (864 mm)
Q 15

¹⁄₂” (394 mm)

4

10009459

Clearance to Combustibles

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F

G

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O

N

M

L

K

A B CDE

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W

X

Y

Z

Fireplace

Top of Unit to Ceiling ................................32” (813 mm)

Front of Unit to Combustibles ...................36” (914 mm)

Appliance

Top of Standoff .........................................0” (0 mm)

Bottom ......................................................0” (0 mm)

Side .....................................................3/4” (19 mm)

Back .........................................................0” (0 mm)

Venting

Concentric sections of DV Vent ....................1” (25 mm)

Nonconcentric sections of DV Vent

Sides and Bottom ...................................1” (25 mm)

Top .........................................................2” (51 mm)

Mantels

The height that a combustible mantel is fitted above the
fireplace is dependent on the depth of the mantel. This
also applies to the distance between the mantel leg (if
fitted) and the fireplace.

For the correct mounting height and widths refer to
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.

Brookhaven Direct Vent Gas Fireplace

CFM164b

Side of Fireplace

Combustion
Opening

CFM170

Mantel Mantel Leg From Side

Ref. Leg Depth Ref. of Comb. Opening

F 12 (305 mm) K 12” (305 mm)
G 9” (229 mm) L 9” (229 mm)
H 6” (152 mm) M 6” (152 mm)
I 4” (102 mm) N 4” (102 mm)
J 3” (76 mm) O 3” (76 mm)

Mantel Shelf Mantel from Top of

Ref. or Breast Plate Ref. Combustion Chamber
Depth 20DVT

V 10” (254 mm) A 18
W 8” (203 mm) B 16
X 6” (152 mm) C 14¹⁄₂” (368 mm)
Y 4” (101 mm) D 12¹⁄₂” (318 mm)
Z 2” (51 mm) E 10

Fig. 3a Combustible mantel minimum installation.

10009459 5

Fireplace
Front

Mantel Chart

Maintain minimum 2¹⁄₂”
(64 mm) clearance to
combustible

Top of Combustion
Chamber

¹⁄₂” (470 mm)
¹⁄₂” (419 mm)

¹⁄₂” (267 mm)

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.

Proposition 65 Warning: Fuels used in gas, wood-

burning or oil fired appliances, and the products of
combustion of such fuels, contain chemicals known to
the State of California to cause cancer, birth defects
and other reproductive harm.
California Health & Safety Code Sec. 25249.6

Brookhaven 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.

Flange Drywall

Position Depth
A 1/2” / 13 mm
B 5/8” / 16 mm

Flange Location for

Desired Drywall Depth

Gas Specifications

Max. Min. Air
Input Input Shutter
Model Fuel Gas Control BTU/h BTU/h Setting

Sides &
20DVTRN Nat. Millivolt Hi/Lo 13,000 8,700 Bottom
Half Open

Sides &
20DVTRP Prop. Millivolt Hi/Lo 13,000 8,700 Bottom

Half Open

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 (1,370m) 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

FP1539

Fig. 4 Nailing flanges.

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.

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 ap-

20DVT

Certified To

ANSI Z21.88-2005 / CSA 2.33-2005

Vented Gas Fireplace Heaters

Unit: GFDN4B0

proved 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.

6

When purging the gas lines, the front win­dow frame assembly must be removed.

Always check for gas leaks with a mild soap
and water solution applied with a brush no
larger than 1” (25 mm). Never apply soap
and water solution with a spray bottle. Do
not use an open flame for leak testing.

10009459

Brookhaven Direct Vent Gas Fireplace

TPTH

TH

TP

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.

The fireplace valve must not be subjected
to any test pressures exceeding 1/2 psi.
Isolate or disconnect this or any other gas
appliance control form the gas line when
pressure testing.

The gas control is equipped with a captured screw type
pressure test point, therefore it is not necessary to pro­vide a 1/8” test point up stream of the control.

When using copper or flex connector use only approved
fittings. Always provide a union when using black iron
pipe so the gas line can be easily disconnected for
burner or fan servicing. 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

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 form 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. 6)

Remote ON/OFF Switch

FP1218

Fig. 6 Remote switch wiring diagram for R models.

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.

• If vent termination is installed in an accessible loca-

tion, Vent Termination Guard #53525 shall be in­stalled.

• 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
1/2” (13 mm) per 12” (305 mm).

10009459 7

There must not be any obstruction such as bushes,
garden sheds, fences, decks or utility buildings within
24” (610 mm) from the front of the termination hood.

Do not locate termination hood where excessive snow
or ice build up may occur. Be sure to check vent 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
CSA B149.1 Installation Codes (1991) for Canada
or follow the current National Fuel Gas Code, ANSI
Z223.1/NFPA 54 for installations in the USA.

Brookhaven 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

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

Operable

Operable

Fixed

Closed

V

B

INSIDE

CORNER DETAIL

V

A

G

N

N

CFM145a

General Venting Information - Termination Location

Canadian Installations1 US Installations

2

A = Clearance above grade, veranda, porch, 12” (30cm) 12” (30cm)
deck, or balcony

B = Clearance to window or door that may be 6” (15cm) for appliances 6” (15cm) for appliances
opened < 10,000Btuh (3kW), 12” (30cm) < 10,000 Btuh (3kW), 9”
for appliances > 10,000 Btuh (3kW) and (23cm) for appliances > 10,000
< 100,000 Btuh (30kW), 36” (91cm) Btuh (3kW) and < 50,000 Btuh
for appliances > 100,000 Btuh (30kW) (15kW), 12” (30cm) for
appliances > 50,000 Btuh (15kW)

C = Clearance to permanently closed window 12” (305mm) recommended to 12” (305mm) recommended to
prevent window condensation prevent window condensation

D = Vertical clearance to ventilated soffit located
above the terminal within a horizontal 18” (458mm) 18” (458mm)
distance of 2’ (610mm) from the center
line of the terminal

E = Clearance to unventilated soffit 12” (305mm) 12” (305mm)
F = Clearance to outside corner see next page see next page
G = Clearance to inside corner (see next page) see next page see next page
H = Clearance to each inside of center line 3’ (91cm) within a height of 15’ (5m) 3’ (91cm) within a height of 15’

extended above meter/regulator assembly above the meter/regulator assembly (5m) above the meter/regulator
assy

I = Clearance to service regulator vent outlet 3’ (91cm) 3’ (91cm)
J = Clearance to nonmechanical air supply inlet 6” (15cm) for appliances < 10,000 6” (15cm) for appliances

to building or the combustion air inlet to any Btuh (3kW), 12” (30cm) for < 10,000 Btuh (3kW), 9”
other appliances appliances > 10,000 Btuh (3kW) and (23cm) for appliances > 10,000
< 100,000 Btuh (30kW), 36” (91cm) Btuh (3kW) and < 50,000 Btuh
for appliances > 100,000 Btuh (30kW) (15kW), 12” (30cm) for
appliances > 50,000 Btuh (15kW)

K = Clearance to a mechanical air supply inlet 6’ (1.83m) 3’ (91cm) above if within 10
feet (3m) horizontally

L = Clearance above paved sidewalk or paved 7’ (2.13m)† 7’ (2.13m)†
driveway located on public property

M = Clearance under veranda, porch, deck or 12” (30cm)‡ 12” (30cm)‡
balcony

N = Clearance above a roof shall extend a minimum of 24” (610mm) above the highest point when it passes through the roof
surface, and any other obstruction within a horizontal distance of 18” (450mm).

1 In accordance with the current CSA-B149 Installation Codes
2 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Codes
† A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and
serves both dwellings
‡ only permitted if veranda, porch, deck or balcony is fully open on a minimum 2 sides beneath the floor:
NOTE: 1. Local codes or regulations may require different clearances.

2. The special venting system used on Direct Vent Fireplaces are certified as part of the appliance, with clearances tested and
approved by the listing agency.

3. CFM Corporation assumes no responsibility for the improper performance of the appliance when the venting system does not
meet these requirements.

Fig. 7 Termination location requirements.

8

10009459

Outside Corner

Inside Corner

Termination Clearances

Termination clearances for buildings with combustible and noncombustible exteriors.

G =

Combustible
6" (152 mm)

Noncombustible
2" (51 mm)

F =

Combustible
6" (152 mm)

Noncombustible
2" (51 mm)

G

Balcony ­with no side wall

M =

Combustible &
Noncombustible
12" (305 mm)

M

Balcony ­with perpendicular side wall

M = 24" (610 mm)
P = 20” (508 mm)

M

F

Alcove Applications*

C

D

C

E

V

V

Combustible &
Noncombustible

V

V

V

E = Min. 6” (152 mm) for

non-vinyl sidewalls
Min. 12” (305 mm) for
vinyl sidewalls

O = 8’ (2.4 m) Min.

O

P

*NOTE: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions
specified for vinyl or non-vinyl siding and soffits. 1. There must be a 3’ (914 mm) minimum between termination caps. 2. All
mechanical air intakes within 10’ (1 m) of a termination cap must be a minimum of 3’ (914 mm) below the termination cap. 3. All
gravity air intakes within 3’ (914 mm) of a termination cap must be a minimum of 1’ (305 mm) below the termination cap.

Fig. 7a Termination clearances.

Canadian Installations:

General Information Assembling Vent Pipes

Venting system must be installed in accordance with the
current CSA-B149.1 installation code.

USA Installations:

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.

Brookhaven Direct Vent Gas Fireplace

No.

of Caps D
1 3’ (.9 mm) 2 x D
2 6’ (1.8 m) 1 x D
3 9’ (2.7 m) 2/3 x D
4 12’ (3.7 m) 1/2 x D

D

= # of Termination caps x 3

Min.

C

= (2 / # termination caps) x D

Max.

* Be sure the flex vent is flat and flush with the flue or
outer collar 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 proce
dure must be performed on the vent side.

C

Min.

Max.

Actual

Actual

Actual

Actual

Actual

584-15

-

Before joining the flex vent pipe to the unit, apply a
bead of high temperature sealant* (provided) to the 4”
pipe exiting the fireplace. Secure flex vent piep 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.

10009459 9

Flex Vent Pipes

Hose
Clamp

Apply High Tem­perature Sealant

Fig. 8 Apply high temperature sealant to 4” and 7” pipes.

FP1471a

Brookhaven 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

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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 joints 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. 9 Twist-lock pipe joints.

TWL100

Horizontal dimension from the outside face of the

wall to the center of the fireplace vent flange

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. 10)
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).

10

Sidewall vent graph showing the relationship between vertical

and horizontal dimensions for a Direct Vent flue system.

Fig. 10 Sidewall venting graph. (Dimensions in feet)

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.

10009459

Brookhaven Direct Vent Gas Fireplace

36"

(914 mm)

Max.

36"

(914 mm)

Max.

7'6"

(2.3m)

A

B

A + B = 17' (Max.)

(5.2m)

1

2

3

4

1

2

3

4

Horizontal plane means no vertical rise exists on this
portion of the vent assembly.

• The maximum number of 90° elbows per side wall

installation is three (3). (Fig. 11)

• If a 90° elbow is fitted directly on top of the fireplace

flange, the maximum horizontal vent run before the
termination or a vertical rise is 36” (914 mm). (Fig.

12)

• 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. 12)
This does not apply if the 90° elbows are used to
increase or redirect a vertical rise. (Fig. 13)

3 x 90° Elbows

FP1176

Fig. 11 Maximum three (3) 90° elbows per installation.

Example: According to the vent graph (Page 10) the

maximum horizontal 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 the horizontal vent it must be reduced to 17’
(5.2 m). In Figure 13 Dimension A plus B must not be
greater than 17’ (5.2 m).

• 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” (45 cm). 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. 14)
Example:
Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total angular variation = 270°

1 + 2 + 3 + 4 = 270°

FP1180

FP1177

Fig. 12 Maximum horizontal run with no rise.

Fig. 14 Maximum elbow usage.

Vertical Sidewall Installation

Twist Lock Pipe

STEP 1

Locate vent opening on the wall. It may be necessary
to first position the fireplace and measure to obtain hole
location. Depending on whether the wall is combustible
or noncombustible, cut opening to size. (Fig. 15) (For
combustible walls first frame in opening.)

NOTE: When using flex vent, the opening will have to
be measured according to the 1/2” (13 mm) rise in 12”

Fig. 13 Horizontal run reduction.

10009459 11

FP1178

(305 mm) vent run.

Combustible Walls

(Fig. 15): Cut a 9³⁄₈”H x 9³⁄₈” W
(240 x 240 mm) hole through the exterior wall and
frame.

Noncombustible Walls (Fig. 15): Hole opening must
be 7.5” (190 mm) in diameter.

Brookhaven Direct Vent Gas Fireplace

X

X

X

X

Vent Opening for Combustible Wall

9³⁄₈”

(240 mm)

Fig. 15 Locate vent opening on wall.

9³⁄₈”

(240 mm)

Framing
Detail

Fireplace Hearth

Opening for Noncombustible Wall

7¹⁄₂”

(190 mm)

VO584-100

STEP 2

Measure wall thickness and cut adjustable zero clearance
sleeve parts to proper length (MAXIMUM 12”/305 mm).
Assemble sleeve and attach to firestop with #8 sheet metal
screws (supplied). Install firestop assembly. (Fig. 16)

FP1181

Fig. 17 Vertical height requirements.

STEP 5

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. 18)

Always install horizontal venting on a level
plane.

Zero clearance sleeve is only required for
combustible walls.

Adjustable
Zero Clearance
Sleeve

#8 Screws
(2)

Firestop

Adjustable Zero Clearance Sleeve

Fig. 16 Adjustable zero clearance sleeve.

Max. Length
12” (305mm)

#8 Screws (2)

STEP 3

Place fireplace into position. Measure the vertical height
(X) required from the base of the flue collars to the
center of the wall opening. (Fig. 17)

STEP 4

Apply a band of silicone to the inner and outer flue
collars of the fireplace and using appropriate length of
pipe section(s) attach to fireplace with three (3) screws.
Follow with the installation of the inner and outer elbow,
again secure joints with three (3) sheet metal screws.
Wipe off any excess silicone.

#8
Screws
(2)

ZCS101

FP1182

Fig. 18 Horizontal length requirement.

STEP 6

Use appropriate length of pipe section - telescopic or
fixed - and install. The sections which go through the
wall are packaged with the starter kit, and can be cut to
suit if necessary.

Sealing vent pipe and firestop gaps with high tem

­perature sealant will restrict cold air being drawn in
around fireplace.

12

10009459

Brookhaven Direct Vent Gas Fireplace

12"

(305mm)

6"

(152mm)

5"

(127mm)

6"

(172mm)

6" (165mm)

STEP 7

Apply high temperature sealant to 4” (102 mm) and 7”
(178 mm) collars or the termination one inch away from
the end. 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. As an alterna­tive to screwing the termination directly to the wall, you
may also use expanding plugs or an approved exterior
construction adhesive. You may also attach the termina­tion with screws through the inner body into the 4” vent
pipe, however for this method, you must extend the 4”
pipe approximately 6” (152 mm) beyond the outer face of
the wall.

Support horizontal pipes every 36”
(914 mm) with metal pipe straps.

STEP 4

Install the 4” (102 mm) flex vent pipe to the appliance
collar as described on Page 13. Secure the end with the
first spring 6³⁄₄” (172 mm) from the flex pipe end to the
unit.

STEP 5

Slide the 7” (178 mm) flex vent pipe over the 4” flex vent
pipe and secure 7” collar as described on Page 14.

STEP 6

Bend the flex pipe horizontal so the bottom of the hori
zontal pipe measures 6¹⁄₂” (165 mm) from the top of the
unit immediately after the 90° formation. (Fig. 20) Be
sure to follow the 1/2” (13 mm) rise in a 12” (305 mm)
horizontal run rule.

STEP 7

Install the 4” flex then 7” flex to the termination.

Vertical Sidewall Installation

Flex Vent Pipe

NOTE: The 40” (1016 mm) flex vent is used for 90° off

the top of the unit then out the back wall.
Follow Steps 1 and 2 on Page 11.

STEP 3

Install the four (4) spacer springs on the 4” flex vent
pipe. When installing the spacer springs around the 4”
pipe, stretch the spring to approximately 15” (381 mm),
wrap the spring around the pipe and interlock the ends
of the spacer spring approximately 2” (51 mm). Mea­sure 6³⁄₄” (172 mm) from the end of the pipe. Place the
next spring 5” (127 mm) from the previously installed
spring. Place the next spring 6” (152 mm) from the last
spring. Finally, place the last spring 12” (305 mm) from
the last spring installed. (Fig. 19)

Fig. 20 Bend flex vent at 90° so horizontal portion is 6¹⁄₂”
(165 mm) off top of unit.

Below Grade Installations

When it is not possible to meet the required vent ter­minal clearances of 12” (305 mm) above grade level
a snorkel kit is recommended. This 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.

Ensure the sidewall venting clearances are observed.

4” Flex Vent Pipe

If venting system is installed below ground, we recom­mend a window well with adequate and proper drainage
to be installed around the termination.

Spacer Spring

If installing a snorkel, a minimum 24” (610 mm) vertical
rise is necessary. The maximum horizontal run with the
24” vertical pipe is 36” (914 mm). This measurement
is taken from the collar of the fireplace (or transition
elbow) to the face of the exterior wall. See the Sidewall
Venting Graph for extended horizontal run if the vertical
exceeds 24” (610 mm).

Fig. 19 Install spacer springs.

FP1474

1. Establish vent hole through the wall. (Fig. 15)

2. Remove soil to a depth of approximately 16”
(406 mm) below base of snorkel. Install window
well (not supplied). Refill hole with 12” (305 mm) of
coarse gravel leaving a clearance of approximately

10009459 13

4” (102 mm) below snorkel. (Fig. 21)

FP1475

-

Brookhaven Direct Vent Gas Fireplace

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 the snorkel into the vent pipe and secure to the
wall.

7. Level the soil to maintain a 4” (102 mm) clearance
below snorkel. (Fig. 21)

Zero Clearance Sleeve
(if required)

Firestop

7” Pipe

24” (610 mm )

Minimum *

Fig. 21 Below grade installation.

Screws

7TDVSNORK
(Snorkel)

4” Clear­ance Min.

Window
Well

Gravel

Drain

Foundation Wall

*A minimum of 24” (610 mm)
vertical pipe must be installed
when using the 7TDVSNORK.

BG402a

Vertical Through-the-Roof Application

This gas fireplace has been approved for:

• Vertical installations up to 40’ (12 m) in height. Up

to a 10’ (3 m) horizontal vent run can be installed
within the vent system using a maximum of two 90°
elbows. (Fig. 23)

• Up to two 45° elbows may be used within the hori-

zontal run. For each 45° elbow used on the horizon­tal plane, the maximum horizontal length must be

reduced by 18” (450 mm).
Example: Maximum horizontal length:
No elbows = 10’ (3 m)

1 x 45° elbow = 8.5’ (2.6 m)
2 x 45° elbows = 7’ (2.1 m)

• A minimum of an 8’ (2.5m) vertical rise is required.

• Two sets of 45° elbow offsets may be used within the

vertical sections. From 0 to a maximum of 8’ (2.5 m)

of vent pipe can be used between elbows. (Fig. 24)

• 7DVCS supports offsets. (Fig. 25) This application

will require that you first determine the roof pitch

and use the appropriate starter kit. (Refer to Venting

Components List)

• The maximum angular variation allowed in the sys-

tem is 270°. (Fig. 24)

• The minimum height of the vent above the highest

point of penetration through the roof is 2’ (610 mm).

(Fig. 27)

Do not backfill around snorkel.

A clearance of at lest 4” must be main

-

tained between the snorkel and the soil.

If the foundation is recessed, use recess brackets (not
supplied) for securing lower portion of the snorkel. 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 the protruding wall
face. (Fig. 22)

Snorkel

Foundation
Recess

Watertight Seal
Around Pipe

Fig. 22 Snorkel installation, recessed foundation.

Wall Screws

Sheet Metal
Screws

BG401

Max. Height 40’ (12.2m)
Min. Height 8’ (2.4m)

Max. 10’ (3m)

Support Straps
Every 3’ (.9m)

FP1183

Fig. 23 Support straps for horizontal runs.

Vertical Through-the-Roof Installation

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).

14

10009459

1

2

3

4

1

2

3

4

1 + 2 + 3 + 4 = 270°

Min.
2' (610 mm)

Brookhaven Direct Vent Gas Fireplace

Attic Insulation Shield

Upper Floor

(279mm)

Ceiling Installation

11”

11”

(279mm)

FP1179

Fig. 24 Maximum elbow usage.

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
#7DVAIS into position and secure. (Fig. 26)

7. Install roof support (Fig. 25) and roof flashing making
sure upper flange is below the shingles. (Fig. 28)

8. Install appropriate pipe sections until the venting is
above the flashing. (Fig. 28)

9. Install storm collar and seal around the pipe.

10. Add additional vent lengths for proper height. (Fig.

28)

11. Apply high temperature sealant to 4” and 7” collars
of vertical vent termination and install.

If there is a room above ceiling level, fire stop spacer
must be installed on both the bottom ad 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.

Joist

Nails (4)

Fig. 26 Place firestop spacer(s) and secure.

Fig. 27 Minimum termination to roof clearance.

3 #5 Sheet Metal
Screws per Joint

Sealant

Storm Collar

Firestop
Spacer

FP1029

FP1185

TWL101a

Fig. 28 Roof flashing.

Fig. 25 Venting supports.

Typical Roof

Support

Application

Typical Ceiling

Support

Application

FP1184

10009459 15

Brookhaven Direct Vent Gas Fireplace

Venting Components

Starter Kit ­ Model 7TDVSK - Sidewall Venting (Twist Lock Pipe)
Model 7FDVSK - Sidewall Venting (Flex Vent Pipe)
Models 7TDVTK/TV - Hot Touch Termination Kits
Model 7TDVTVTK/TV - Cool Touch Termination Kit
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)

Starter Pipe
Model 7TDVP 20/8 - 24” Starter Pipe Bulk
Model 7FDVP 30/8 - 30” Flex Pipe Bulk

45o Elbow
7TDV45 for Rear Vent to Vertical Vent
or Vertical/Horizontal Offsets

90o Transition Elbow
7TDVRT90 for Rear Vent to Vertical Vent
90° Elbow
7TDV90 Vertical/Horizontal Offset

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

16

Vertical/Horizontal Combination Offset Support
Model 7DVCS

10009459

Operating Instructions

Brookhaven Direct Vent Gas Fireplace

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 and

window frame) is available through your CFM
Corporation dealer and should only be installed
by a licensed qualified service person.

Cast Front Panel

Attach the cast
panel by hook­ing onto top of

Cast Front

fireplace.

To remove the
cast front assem­bly, pull cast front
up then lift out.

Fig. 29 Remove

FP1628

cast front by lifting
up then out.

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 cast front assembly.

4. Unlock the frame window by removing the two (2)

machine screws at the top corners of the window
frame.

5. Unlock the frame window by pulling the handle of the

two latches at the bottom part of the window frame.
Pull the left latch counterclockwise and the right
latch clockwise.

6. Pull the bottom of the glass frame assembly out and

slide the top of the frame assembly out the slot at
the top.

7. To replace the window frame assembly, reverse this

procedure.

Machine
Screw

Pull Left
Side Latch
Counter­clockwise

Fig. 30 Window frame assembly removal.

Machine
Screw

Pull Right
Side Latch
Clockwise

FP1629

Glass Cleaning

It is necessary to clean the glass periodically. During
start-up condensation, which is normal, forms on the
inside of the glass and causes lint, dust and other
airborne particles to cling to the 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 household
cleaner and warm water (gas fireplace glass cleaner
is recommended). 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 the glass after the first two weeks of
operation.
Do not clean glass when hot.
Do not use abrasive cleaners.
Do not strike or slam the glass.

10009459 17

Brookhaven Direct Vent Gas Fireplace

Installation of Logs

The logs are fragile and should be handled
with care. Keep the packaging material out
of the reach of children and dispose of the
mterial in a safe manner.

The individual logs can be easily identified
by the numbers cast on the underside of
each log.

Log Identification Chart

LOGS 20DVT
Log Rear J11

Log Front J12

Log Installation

1. Remove cast front assembly.

2. Remove window frame assembly.

3. Remove log box from inside firebox.

4. Unpack the logs from packaging and remove
each log from its wrapping material. Set aside
the ember and the lava rock bags.

As with all plastic bags - these are not
toys and should be kept away from
children and infants.

5. Place the log rear (J11). Place the two under
side holes of the log over the two pin studs of
the bracket on the left and right sides of the
burner housing. (Fig. 31)

6. Place the log front (J12). Place the two underside
holes of the log over the two pin studs of the bracket
on the left and right sides of the front burner hous­ing. (Fig. 32)

7. Place ember material on top of burner. Scatter the
ember material over the tiles on the front area of the
burner housing. (Fig. 31) Do not pack the ember
material. Separate it when unpacking and keep it in
a fluffy and loose condition for more realistic ember
effect.

8. Place large lava rock onto the two sides of the
burner tray. (Fig. 31)

Do not place any of the lava rock material
on the burner housing assembly.

Figure 31

-

Log Rear (J11)

Ember
Material

18

Figure 32

LG471

Lava Rock

Log Front (J12)

LG470

10009459

Brookhaven Direct Vent Gas Fireplace

L

O

H

I

Turn

counterclockwise

to increase

flame height

Turn clockwise

to decrease

flame height

LO

HI

Turn

counterclockwise

to decrease

flame height

Turn clockwise

to increase

flame height

Large Lava Rock

The large bag of lava rock provided with this fireplace
must be placed on the firebox base around the sides of
the burner assembly and on the tray beneath the grate.

Under no circumstances should this large lava rock
be placed on any part of the burner assembly.

Flame & Temperature Adjustment

For fireplaces equipped with Hi/Lo valves, flame adjust­ment is accomplished by rotating the Hi/Lo adjustment
knob located near the centre of the gas control. (Fig. 33
or 34)

Honeywell Valve

Fig. 33 Flame adjustment knob for Honeywell valve.

SIT 820 Valve

Fig. 34 Flame adjustment knob for SIT valve.

Flame Characteristics

It is important to periodically perform a visual check of
the pilot and the burner flames. Compare them to Fig­ures 35 & 36. If any of the flames appear abnormal call
a service person.

3/8” - 1/2”

(10 - 13 mm)

SIT Pilot

Fig. 35 Correct pilot flame appearance.

PSE Pilot

F584-703

Inspecting the Venting System

This appliance venting system is designed and con­structed to develop a positive flow adequate to remove
flue gases to the outside atmosphere.

Any foreign objects in the venting system, except those
designed specifically for the venting system, may cause
spillage of flue gases.

To inspect the venting system, make sure the main gas
valve is off. Remove window frame assembly (Refer to
Window Frame Assembly Removal Section). Using a
flashlight, check the area above the baffle in the com­bustion dome. Clean if necessary.

10009459 19

Yellow Flame

Red Glow

Fig. 36 Correct burner flame appearance for the 20DVT.

LG473

Brookhaven Direct Vent Gas Fireplace

PILOT

ON

OFF

ON

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. Follow the gas suppli-

Lighting Instructions

er’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 techni
cian 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.

20

To Turn Off Gas To Heater

3. Open louvre assembly bottom.

4. Push in gas control knob slightly and turn clock­wise to “OFF”. Do not force.

5. Close control access panel.

10009459

Brookhaven Direct Vent Gas Fireplace

Troubleshooting the Gas Control System

SIT NOVA 820 MILLIVOLT VALVE

NOTE: Before troubleshooting the gas control system, be sure external gas shut off is in the “On” position.

WARNING: REMOVE GLASS FRONT BEFORE DOING ANY GAS CONTROL SERVICE WORK.

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 the gap at electrode and pilot; it 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 electode
wire is properly connected, replace ignitor.

2. Pilot will not stay lit after A. Defective pilot generator Check pilot flame. Must impinge on thermocouple/
carefully following lighting (thermocouple), remote wall thermopile. NOTE: This pilot burner assembly
instructions. switch. utilizes both a thermocouple and a thermopile.
The thermocouple operates the main valve opera­ tion (ON/ OFF). Clean and/or adjust pilot for maxi-
mum flame impingement on thermopile and thermo­ couple.

B. Defective automatic valve Turn valve knob to “Pilot.” Maintain flow to pilot;
millivolt 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 connections
main burner Jumper wires across terminals at wall switch; if
burner comes on, repalce 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
millivoltage. fully 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)
C. Low gas supply pressure Check gas supply pressure to be between minimum

and maximum with the burner in the “ON” position.

SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION

10009459 21

Brookhaven Direct Vent Gas Fireplace

A

B

C

O

F

F

P

I

L

O

T

O

D

E

F

O

F

F

P

I

L

O

T

O

Conversions must be completed by qualified personnel

Fuel Conversion Instructions

To convert the 20DVT unit for use with a different
gas follow these instructions. Before proceeding, turn
control knob on valve to “OFF” and turn gas supply
OFF. Turn OFF any electricity that may be going to the
appliance.

CAUTION: Logs may be HOT! Allow to cool before
proceeding.

1. Remove window frame assembly. (Refer to “Window
Frame Assembly Removal”, Page 17, Fig. 30)

2. Remove logs if previously installed.

NOVA SIT820 Valve Conversion

1. Using the TORX T20 bit, remove and discard the
three (3) pressure regulator mounting screws (A),
pressure regulator tower (B) and the spring and
diaphragm assembly (C). (Fig. 37)

FC108

Fig. 38 Replace regulator.

Burner Orifice Conversion

1. Remove two (2) burner housing assembly mounting
screws. (Fig. 39)

2. Lift burner housing up and remove burner orifice
from manifold assembly using 7/16” wrench. (Fig.

39)

Burner Orifice
(Refer to Conversion Kit
Orifice chart)

Pilot Location

FC107

Fig. 37 Remove mounting screws, pressure regulator tower
and spring and diaphragm assembly.

2. Insure the rubber gasket (D) is properly positioned
and install the new HI/LO pressure regulator assem­bly to the valve using the new screws (E) supplied
with the kit. Tighten the screws securely. (Ref. torque
= 25 in/lb) (Fig. 38)

3. Install the enclosed conversion label (F) to the valve
body where it can easily be seen. (Fig. 38)

Valve conversion is complete.

Burner Hous­ing Mounting
Screw

Burner Housing Assembly

FP1630

Fig. 39 Burner housing assembly.

3. Install conversion orifices in place of orifices just
removed.

4. Air shutter settings should be:

Natural Gas: sides and bottom half open
LP: Side and bottom half open

5. Reinstall manifold to burner pan.

NOTE: It is not necessary to remove the pilot tube

for conversion.

10009459

22

Brookhaven Direct Vent Gas Fireplace

Air Shutter

FP1631

Fig. 40 Back burner housing.

Pilot Orifice Conversion

1. Remove pilot hood by lifting up. (Fig. 41)

2. Remove pilot orifice with 5/32” Allen wrench. (Fig.

42)

3. Install conversion pilot orifice.

4. Reinstall pilot hood and be sure to align with index
tab.

5. Turn the gas supply valve and gas valve on and test
for leaks. Use a 50/50 solution of liquid soap and
water to test for leaks at gas fittings and joints. Apply
water/soap solution with brush only - do not over ap-

ply. NEVER test with an open flame.

6. Follow procedure on rating plate to light the pilot.
Check for leaks.

7. Turn main burner on and check for leaks.

8. Reinstall logs and window frame assembly. Refer to
Page 18 for proper log placement.

Installation complete.

Pilot Hood

Pilot Bracket

Fig. 41 Remove pilot hood.

Index Tab

Snap Ring

Fig. 42 Remove pilot orifice.

CO105a

Allen
Wrench

CO106a

10009459 23

Brookhaven 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 replace 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.

Contact your local representative to arrange an annual
service program.

Cleaning the Standing

Pilot Control System

The burner and control system consists of

• burner tube • 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 per-

formed by a qualified technician.

Logs May Be HOT!!

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” or 1/2” of the thermopile should
be engulfed in the pilot flame. (Fig. 43)

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.

PSE Pilot

3/8” - 1/2”

(10 - 13mm)

SIT Pilot

F584-703

Fig. 43 Correct pilot flame appearance.

1. Turn off pilot light at gas valve side.

2. Let fireplace cool if it has been running.

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.

24

10009459

Brookhaven Direct Vent Gas Fireplace

1

1a

1b

2

3

4

5

7a,b

8a,b

12

13

9

14

10

16

17

18

20

21

22

24

19

15

CFM Corporation reserves the right to make changes in design, materials, specifications, prices and discontinue colors and products at any time,
without notice.

20DVT

Ref. Description 20DVT

1. Log Set (Complete) 10009451
1a. Log Rear J11
1b. Log Front J12

2. Lava Rock (Pkg) 10001454

3. Ember (Pkg) 10000550

4. Burner Housing Assy 10009061

5. Ceramic Tile (single) 57803
6a. Orifice Burner - Nat. (not shown) Refer to Rating Plate for Orifice Size
6b. Orifice Burner - Prop. (not shown) Refer to Rating Plate for Orifice Size

10009459 25

Brookhaven Direct Vent Gas Fireplace

20DVT (continued)

Ref. Description 20DVT

7a. Orifice Pilot - Natural 10002268
7b. Orifice Pilot - Propane 10002269
8a. Pilot Assy. SIT - RN 10002264
8b. Pilot Assy. SIT - RP 10002265

9. Pilot Tubing w/Fittings SIT 10001296

10. Remote Switch Wire Assy. 20010345

11. Manifold Tubing w/Fittings (not shown) 57318

12. Thermocouple (RN/RP) 53373

13. Thermopile (RN/RP) 51827

14. Electrode Ignitor w/Cable (RN/RP) 10001297

15. Ignitor Piezo w/Nut 50932

16. Valve SIT 820.662 (RN) 20010563

17. Flexible Gas Line w/ON/OFF Shut-Off Valve 10009064

18. Frame Window w/Glass Assy. 10009485

19. Console Assy. 10009081

20. Support Housing & Log Left Assy. 10009060

21. Support Housing & Log Right Assy. 10009463

22. ON/OFF Switch 51842

23. Ceramic Refractory Lining Kit (not shown) 10009457

24. Relief Plate Assy. 10009064

25. Remote Switch Kit (not shown) 53875

Fuel Conversion Kits

Conversion Kit, NG to LP
20DVT Kit #10009486
Conversion Kit, LP to NG
20DVT Kit #10009488

26

10009459

Optional Accessories Available

Remote Controls

Brookhaven Direct Vent Gas Fireplace

Optional remote control units are available to control
different functions of the appliance.

Model Functions Controlled
RC1 ON/OFF
RC2 ON/OFF and Temperature
IMTFK Wall mounted thermostat control

Ceramic Refractory Panels

NOTE: The ceramic refractories are
shipped separate from the unit and MUST
BE installed.

Take care when handling the refractory panels as
they are fragile until held in place and supported.

Installation Instructions

1. Remove window frame assembly and logs.

2. Place rear ceramic panel in back of unit. (Fig. 44)

3. Place side panels.

4. Re-install logs and window frame assembly.

Optional Trim Kits

NOTE: The cast panel is optional, however, a cast

panel MUST BE installed with the fireplace.
Item # Model # Description
GAET4B0 BHTRIMEBBLK Ebony Black
GABT4B0 BHTRIMCLBLK Classic Black

Rear
Ceramic Panel

Burner

Fig. 44 Rear ceramic panel placement.

Back of
Firebox

Rear Log
Support

H102

Optional Cabinet

A cherry finish corner cabinet is available for the 20DVT.
Item #BACG6B0, Model #BCCGF20CC.

10009459 27

Brookhaven Direct Vent Gas Fireplace

28

10009459

Brookhaven Direct Vent Gas Fireplace

10009459 29

Brookhaven Direct Vent Gas Fireplace

30

10009459

LIMITED LIFETIME WARRANTY

Brookhaven Direct Vent Gas Fireplace

PRODUCT COVERED BY THIS WARRANTY

All Vermont Castings gas stoves, gas inserts, and gas fireplaces, and all Majestic 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
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

or Majestic Gas Fireplace/

• 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 N O T ATTEMPT TO D O A N Y SERVIC E WO R K
YOURSELF.

10009459 31

Efficiency Ratings

EnerGuide Ratings D.O.E.
Model Fireplace Efficiency (%) Steady State (%) (AFUE%)

20DVTRN 60.1 80 64
20DVTRP 60.1 81 64

CFM Corporation

410 Admiral Blvd. • Mississauga, Ontario, Canada L5T 2N6

800-668-5323 • www.cfmcorp.com