Monessen Hearth 624DVST User manual
42D0200 2/10 Rev. 14
420200
6000DV cover
Installation and Operating
Instructions
242D0200
Designer Series Gas Fireplaces
High Elevations ........................................................5
Gas Pressures .........................................................5
Gas Specifications & Orifice Sizes ...........................5
Before You Start .......................................................5
Fireplace Dimensions ..............................................6
Peninsula Fireplace Framing ...................................7
Corner Fireplace Framing ........................................7
See Through Fireplace Framing ..............................8
Fireplace Location .................................................. 11
Secure Fireplace .................................................... 11
Installation Precautions ..........................................13
Installation Clearances ...........................................14
Installation Planning ...............................................15
Installation for Vertical Termination ........................15
Termination Location ..............................................16
How to Use the Vent Graph ...................................17
Rear Wall Vent Installation .....................................18
Horizontal Termination Configuration .....................20
Below Grade Installation ........................................22
Vertical Through-the-Roof Installation ....................23
Installation for Vertical Termination ........................24
Flat Ceiling Installation ...........................................24
Check Gas Type.....................................................26
Installing Gas Piping ..............................................26
Electrical Wiring .....................................................28
Remote Wall Switch ...............................................29
Remote Wall Switch ...............................................30
What To Do If You Smell Gas .................................36
Lighting Pilot for the First Time ..............................36
Lighting Pilot ..........................................................37
Lighting Burner .......................................................38
To Turn Off Gas ......................................................38
Venting System ......................................................39
Cleaning Glass .......................................................39
Pilot and Burner Flames ........................................39
Firebox Cleaning ....................................................39
42D0200
Designer Series Gas Fireplaces
3
4. Never install the fireplace
• in a recreational vehicle
• where curtains, furniture, clothing, or other flammable
objects are less than 42" from the front, top, or sides
of the fireplace
• in high traffic areas
• in windy or drafty areas
5. This fireplace reaches high temperatures. Keep children
and adults away from hot surfaces to avoid burns or
clothing ignition. Fireplace will remain hot for a time after
shutdown. Allow surfaces to cool before touching.
6. Carefully supervise young children when they are in
the room with fireplace.
7. Do not modify fireplace under any circumstances. Any
parts removed for servicing must be replaced prior to
operating fireplace.
8. Turn fireplace off and let cool before servicing, install-
ing, or repairing. Only a qualified service person should
install, service, or repair the fireplace. Have burner
system inspected annually by a qualified service
person.
9. You must keep control compartments, burners, and
circulating air passages clean. More frequent cleaning
may be needed due to excessive lint and dust from
carpeting, bedding material, pet hair, etc. Turn off the
gas valve and pilot light before cleaning fireplace.
10. Have venting system inspected annually by a qualified
service person. If needed, have venting system cleaned
or repaired. Refer to Cleaning and Maintenance, page
41.
11. Keep the area around your fireplace clear of combus-
tible materials, gasoline, and other flammable vapor and
liquids. Do not run fireplace where these are used or
stored. Do not place items such as clothing or decora-
tions on or around fireplace.
12. Do not use this fireplace to cook food or burn paper or
other objects.
13. Never place anything on top of fireplace.
Please leave these instructions with the owner.
Please retain these instructions for future reference
.
This fireplace is a vented product. This fireplace must be
properly installed by a qualified service person. The glass
door must be properly seated and sealed. If this unit is not
properly installed by a qualified service person with glass
door properly seated and sealed, combustion leakage can
occur.
Early signs of carbon
monoxide poisoning are similar to the flu with headaches,
dizziness and/or nausea. If you have these signs, the fire-
place may not have been installed properly. Get fresh air
at once! Have the fireplace inspected and serviced by a
qualified service person. Some people are more affected
by carbon monoxide than others. These include pregnant
women, people with heart or lung disease or anemia,
those under the influence of alcohol, and those at high
altitudes.
Propane/LP gas and natural gas are both odorless. An
odor-making agent is added to each of these gases. The
odor helps you detect a gas leak. However, the odor added
to these gases can fade. Gas may be present even though
no odor exists.
Make certain you read and understand all warnings. Keep
this manual for reference. It is your guide to safe and proper
operation of this fireplace.
1. 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.
2. For propane/LP fireplace, do not place propane/LP
supply tank(s) inside any structure. Locate propane/
LP supply tank(s) outdoors. To prevent performance
problems, do not use propane/LP fuel tank of less than
100 gal. capacity.
3. If you smell gas
• shut off gas supply.
• do not try to light any appliance.
• do not touch any electrical switch; do not use any
phone in your building .
• immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
442D0200
Designer Series Gas Fireplaces
14. Do not use any solid fuels (wood, coal, paper, card-
board, etc.) in this fireplace. Use only the gas type
indicated on rating plate.
15. This appliance, when installed, must be electrically
grounded in accordance with local codes or in the
absence of local codes, with the National Electrical
Code, ANSI/NFPA 70, or the Canadian Electrical
Code, CSA C22.1.
16. Do not obstruct the flow of combustion and ventilation
air in any way. Provide adequate clearances around
air openings into the combustion chamber along with
adequate accessibility clearance for servicing and
proper operation.
17. When the appliance is installed directly on carpeting,
tile or other combustible material other than wood
flooring, you must set appliance on a metal or wood
panel or hearth pad extending the full width and depth
of the appliance.
18. Do not use fireplace if any part has been exposed to
or under water. Immediately call a qualified service
person to arrange for replacement of the unit.
19. Do not operate fireplace if any log is broken.
20. Do not use a blower insert, heat exchanger insert, or
any other accessory not approved for use with this
fireplace.
21. Do not operate the fireplace with glass door removed,
cracked, or broken.
22. This unit is approved for bedrooms and bathrooms.
Direct Vent type appliances draw all combustion air from outside of the dwelling through the
vent pipe.
These appliances have been tested by CSA and found to comply with the established standards for
DIRECT VENT GAS FIREPLACE HEATERS in the USA and Canada as follows:
Tested To: ANSI Z21.88b-2008 / CSA 2.33b-2008 Standards
A manufactured home (USA only) or mobile home OEM installation must conform with the Manufac-
tured Home Construction and Safety Standard, or when such a standard
is not applicable, the , or
.
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 gas fireplaces to give off some
odor the first time it is burned. This is due to the
manufacturing process.
It is recommended that you burn your fireplace for at
least ten (10) hours the first time you use it. Place the
fan switch in the “OFF” position during this time.
WARNING
!
HOT GLASS WILL
CAUSE BURNS.
DO NOT TOUCH GLASS
UNTIL COOLED.
NEVER ALLOW CHILDREN
TO TOUCH GLASS.
42D0200
Designer Series Gas Fireplaces
5
• This appliance has been certified for use with
either natural or propane gas. See appropriate
data plates.
• This appliance is not for use with solid fuels.
• The appliance is approved for bedroom or bedsit-
ting room installations.
• The appliance must be installed in accordance
with local codes if any. If none exist use the cur-
rent installation code. ANSI Z223.1/NFPA 54 in
the USA, CSA B149 in Canada.
• This appliance is mobile home approved.
• This appliance is approved for bathroom instal-
lation.
• The appliance must be properly connected to a
venting system.
• The appliance is not approved for closet or
recessed installations.
The efficiency rating of this appliance is a product
thermal efficiency rating determined under con-
tinuous operating conditions and was determined
independently of any installed system.
FP2276
6000DV prod features
Optional
Remote
Receiver
Hi/Lo Knob
Off/Pilot/On
Knob
Control Panel Blower Control
FP2276
Figure 1 -
Designer Series Fireplace Controls
Input ratings are shown in BTU per hour and are certi-
fied without deration for elevations up to 4,500 feet
(1,370 m) above sea level.
For elevations above 4,500 feet (1,370 m) in USA,
installation 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 installation at eleva-
tions above 4,500 feet (1,370 m).
Natural Propane (LP)
Inlet Minimum 4.5” w.c. 11.0” w.c.
Inlet Maximum 10.5” w.c. 13.0” w.c.
Manifold Pressure 3.5” w.c. 10.0” w.c.
624DVNVC Nat. 36,000 25,000 #44
624DVPVC LP 36,000 26,000 #54
624DVNEC Nat. 36,000 25,000 #44
624DVPEC LP 36,000 26,000 #54
Read this homeowner manual thoroughly and follow all
instructions carefully. Inspect all contents for shipping
damage and immediately inform your dealer if any damage
is found. Do not install any unit with damaged, incomplete,
or substitute parts. Check your packing list to verify that
all listed parts have been received. You should have the
following:
• Fireplace (Firebox and Burner System)
• Log Set • Lava Rock • Rock Wool
• Deflector Shield (to be used with Simpson DuraVent
Horizontal Termination – P/N 985)
• Phillips Screwdriver • Framing Materials
• Hammer • Wall Finishing Materials
• Saw and/or saber saw • Level
• Measuring Tape • Electric Drill and Bits
• Tee Joint • Pliers
• Square • Pipe Wrench
• Caulking Material (Noncombustible)
• Fireplace Surround Material (Noncombustible)
• Piping Complying with Local Codes
• Pipe Sealant Approved for use with Propane/LPG
(Resistant to Sulfur Compounds)
642D0200
Designer Series Gas Fireplaces
236M”
396”
18(6”
4(6QE”
2(6QE”
44”
3456O”
4056QE”5/8”
1/2” 326M”
C
L
5/8”
1/2”
420200
6000Dv penin dims
Gas/Electric Access
3256M”
356M”
18(6”
4(6QE”396”
2456O”
16M”1956O”
376M”
4056QE”
5/8”
1/2”
44”
376M”
5/8”
1/2”
420200
6000DV corner dims
Gas/Electric Access
(Right, Top Vent Shown)
Figure 2 -
Fireplace Dimensions
42D0200
Designer Series Gas Fireplaces
7
It is best to build firebox framing the appliance is set in place. Refer to the dimensions for
your fireplace on Page 7. The framing headers may rest on the top of the firebox standoffs.
The firebox may be installed directly on a combustible floor or raised on a platform of an appropri-
ate height. Do not place firebox on carpeting, vinyl, or other soft floor coverings. It may, however,
be placed on a flat wood, plywood, particle board, or other hard surfaces. Be sure firebox rests on
a solid continuous floor or platform with appropriate framing for support. No cold air should enter
room from under the firebox.
1/2" Drywall 5/8" Drywall
A1 43Z\x" 43C\,"
A2 39M\," 39C\v"
B 41Z\," 41Z\,"
C 22C\v" 22Z\x"
D 24" 23M\,"
A2
B
A1
D
A1
A2
C
FP2037
design corner framing
10/08
Gas Connection
2 x 4
(Minimum)
2 x 2
(Minimum)
2 x 4
(Minimum)
FP2037
C
A2
B
A1
A1
A2
C
FP2038
designer see thru framing
10/08
2 x 4 (Minimum)
Gas Connection
FP2038
Figure 3 -
Peninsula Framing
Figure 4 -
Corner Unit Framing
(Right Hand Configuration shown)
842D0200
Designer Series Gas Fireplaces
For ease of installation, frame around the firebox after it has been set. Refer to chart
below for specifications.
When installing into existing framed (A1) openings, loosen the junction box. Remove the rear-mounted
flue pipe adaptor. Refer to Page 16, Figures 10 and 11. Reattach both assemblies.
C
A2
B
A1
A1
A2
C
FP2038
designer see thru framing
10/08
2 x 4
(Minimum)
Gas
Connection
2 x 4
(Minimum)
FP2038
1/2" Drywall 5/8" Drywall
A1 44Z\v" 44Z\v"
A2 40B\," 40B\,"
B 41Z\," 41Z\,"
C 22C\v" 22Z\x"
Figure 5 -
See-Through Framing
42D0200
Designer Series Gas Fireplaces
9
The combustible area above the facing must not
protrude more than 3/4" from the facing. If it does, it is
considered a mantel and must meet the mantel requirements
listed in this manual.
Figure 6 -
Mantel Clearances
2”
4”
6”
8”
10”
4”
6”
8”
10”
12”
FP2279
mantel clearance
2/09
Wall
Insulation Board
Standoff
Top of Louvers
FP2279
Any remote wiring (i.e. remote control, wall switch, and optional fan) must be done prior to
final finishing to avoid costly reconstruction.
Only noncombustible materials (i.e. brick, tile, slate, steel, or other materials with a UL fire rating
of Zero) may be used to cover the black-painted face of the appliance. A 300°F minimum adhesive
may be used to attach facing materials to the black surface. If joints between the finished wall and
the fireplace surround are sealed, a 300°F minimum sealant material (General Electric RTV103 or
equivalent) must be used. Combustibles may come to the top and side edges but not overlay the
face.
10 42D0200
Designer Series Gas Fireplaces
This gas fireplace should be installed by a qualified installer in accordance with local building codes
and with current CSA-B149 (.1 or .2) Installation codes for Gas Burning Fireplaces 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.
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 cloth-
ing.
3. Caution, due to high glass surface temperature children
should be carefully supervised when they are in the
same room as the fireplace.
4. Under no circumstances should this fireplace be modi-
fied. Parts removed for servicing should be replaced
prior to operating the fireplace again.
5. Installation and any repairs to this fireplace should
be carried out by a qualified service person. A profes-
sional 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 that 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 combus-
tible materials, gasoline and other flammable vapor and
liquids. This fireplace should not be used as a drying
rack for clothing, 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 fire-
place.
10. The flow of combustion and ventilation air must not be
obstructed in any way.
11. When the 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 com-
bustion 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 control valve be left in the “OFF” position.
This appliance has been approved for after-market
mobile home installations.
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 Monessen 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 manu-
facturing process.
Please ensure that your room is well ventilated — open
all windows.
It is recommended that you burn your Monessen fireplace
for a 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.
42D0200
Designer Series Gas Fireplaces
11
Minimum distance between a glass panel and a parallel wall = 42"
Minimum distance between the edge of a glass panel and an adjacent wall = 3"
(Maximum length of horizontal venting = 20'. Refer to the venting section of this manual
for specific dimensions.
Figure 7 -
Possible Fireplace Locations
FP2277
A Flat on Wall
B Room Divider
XX
X
A
B
YY
ZA
Y
FP2277
locate fireplace
The fireplace must be secured to the floor and/or
to framing studs as shown in Figure 8. Use two (2)
wood screws or masonry/ concrete screws to secure
fireplace to the floor. Use four (4) screws to attach
fireplace to framing. The side brackets are adjustable
from 1/2" to 5/8" to accommodate different thickness
of noncombustible material.
FP2278
secure fireplace
Figure 8 -
Secure Fireplace to Floor and Framing Studs
Screws FP2278
12 42D0200
Designer Series Gas Fireplaces
The appliance is shipped as a rear vent unit. If the installation
layout requires the unit to be a top vent configuration the appli-
ance can be converted by following the steps below.
When removing and refitting the plates and adapter be sure the
associated gaskets are undamaged and refitted as required.
1. Remove the eight (8) screws securing the flue pipe adapter
to the fireplace body. Figure 9
2. Set the flue pipe adapter aside, complete with the gasket.
Do not damage the gaskets as the adapter and gasket must
be refitted.
3. Remove the eight (8) screws securing the flue pipe cover to
the top of the intake box and remove the cover and gasket.
Figure 9
4. Remove eight (8) screws securing the flue pipe to the back
of the intake box and remove the pipe and gasket. Figure
10
5. Replace flue pipe to top of firebox. Ensure the gasket is
in place and undamaged. Secure with eight (8) screws.
Figure 11
6. Place the flue pipe cover and gasket removed in step 3
over the flue opening in bottom of the intake box.
7. Refit the flue pipe adapter and gasket to the top of fire-
place. Secure the adapter with eight (8) screws removed
in step 1.
B\,
FP1991
remove screws
FP1992
remove flue pipe
FP1993
replace flue pipe
Screws
Screws
Screws
Flue Pipe
Flue Pipe
Adapter
Flue Pipe
Flue Pipe
Adapter
FP1991
Figure 9 -
Remove 16 Screws from Flue Pipe
Adapter and Flue Pipe Cover
FP1992
Figure 10 -
Remove Flue Pipe
Flue Pipe
Cover
FP1993
Figure 11 -
Attach Flue Pipe to Top Vent Coln-
figuration
42D0200
Designer Series Gas Fireplaces
13
This appliance must be installed with a Monessen
approved venting system only.
Consult local building codes before beginning the
installation. The installer must make sure to select the
proper vent system for installation. Before installing vent
kit, the installer must read this fireplace manual and vent
kit instructions.
Only a qualified installer/service person should install vent-
ing system. The installer must follow these safety rules:
• Wear gloves and safety glasses for protection.
• Use extreme caution when using ladders or when on
rooftops.
• Be aware of electrical wiring locations in walls and
ceilings.
The following actions will void the warranty on your vent-
ing system:
• Installation of any damaged venting component.
• Unauthorized modification of the venting system.
• Installation of any component part not manufactured
or approved by MHSC.
• Installation other than permitted by these instruc-
tions.
**1"
*3"
FP2280
vent pipe clear
**1” **1"
**1”
*3"
326M”
FP2280
until
the flue penetrates the outside wall.
Figure 12 -
Combustible Clearances for Vent Pipe
* A minimum of 3" clearance to the top is required along horizontal
length until flue pipe penetrates outside wall.
** A minimum 1" clearance to combustibles permitted all around
flue at outside wall.
14 42D0200
Designer Series Gas Fireplaces
There are two basic types of direct-vent installation:
• Horizontal Termination
• Vertical Termination
It is important to select the proper length of vent pipe for the type of termination you choose. It is also
important to note the wall thickness.
Select the amount of vertical rise desired. All horizontal run of venting must have 1/4" rise for every 12"
of run towards the termination.
You may use up to three 90° elbows in this vent configuration. Refer to Horizontal Termination Configu-
rations on Pages 22 and 23.
Measure the distance from the fireplace floor to the ceiling. Add the ceiling thickness, the vertical rise in
an attic or second story, and allow for sufficient vent height above the roof line.
You may use two 45° elbows in place of a 90° elbow. You must follow rise to run ratios when
using 45° elbows. The appliance is approved for use with three 90° elbows maximum or a combination
of 90° and 45° elbows up to a maximum of 270°.
For two-story applications, firestops are required at each floor level. If an offset is needed in the attic,
additional pipe and elbows will be required.
You may use a chase with a vent termination with exposed pipe on the exterior of the house. Refer to
Installing Vent System in a Chase below. If pipe is enclosed in chase, it is not exposed.
It is very important that the venting system maintain its balance between the combustion air intake and
the flue gas exhaust. Certain limitations apply to vent configurations and must be strictly followed.
A chase is a vertical boxlike structure built to enclose venting that runs along the outside of a building.
A chase is required for such venting.
42D0200
Designer Series Gas Fireplaces
15
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
Fixed
Closed
Operable
Operable Fixed
Closed
V
B
CFM145a
DV Termin Location
5/01/01 Rev. 12/05/01
sta
INSIDE
CORNER DETAIL
V
A
G
CFM145a
A = Clearance above grade, veranda, porch, 12” (30 cm) 12” (30 cm)
deck, or balcony
B = Clearance to window or door that may be 6” (15 cm) for appliances 6” (15 cm) for appliances
opened < 10,000BTU/h (3kW), 12” (30 cm) < 10,000 BTU/h (3kW), 9”
for appliances > 10,000 Btuh (3kW) and (23 cm) for appliances > 10,000
< 100,000 BTU/h (30kW), 36” (91 cm) Btuh (3kW) and < 50,000 BTU/h
for appliances > 100,000 BTU/h (30kW) (15kW), 12” (30 cm) for
appliances > 50,000 BTU/h(15kW)
C = Clearance to permanently closed window 12” (305 mm) recommended to 12” (305 mm) recommended to
prevent window condensation prevent window condensation
D = Vertical clearance to ventilated soffit located
above the terminal within a horizontal 18” (458 mm) 18” (458 mm)
distance of 2’ (610mm) from the center
line of the terminal
E = Clearance to unventilated soffit 12” (305 mm) 12” (305 mm)
F = Clearance to outside corner see next page see next page
G = Clearance to inside corner (see next page) see next page see next page
H = Clearance to each inside of center line 3’ (91 cm) within a height of 15’ (5 m) 3’ (91 cm) within a height of 15’
extended above meter/regulator assembly above the meter/regulator assembly (5 m) above the meter/regulator
assy
I = Clearance to service regulator vent outlet 3’ (91 cm) 3’ (91 cm)
J = Clearance to nonmechanical air supply inlet 6” (15 cm) for appliances < 10,000 6” (15 cm) for appliances
to building or the combustion air inlet to any BTU/h (3kW), 12” (30 cm) for < 10,000 BTU/h (3kW), 9”
other appliances appliances > 10,000 BTU/h (3kW) and (23 cm) for appliances > 10,000
< 100,000 Btuh (30kW), 36” (91 cm) BTU/h (3kW) and < 50,000 BTU/h
for appliances > 100,000 BTU/h (30kW) (15kW), 12” (30 cm) for
appliances > 50,000 BTU/h(15kW)
K = Clearance to a mechanical air supply inlet 6’ (1.83 m) 3’ (91 cm) above if within 10'
(3 m) horizontally
L = Clearance above paved sidewalk or paved 7’ (2.13 m)† 7’ (2.13 m)†
driveway located on public property
M = Clearance under veranda, porch, deck or 12” (30 cm) 12” (30cm)
balcony
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. MHSC assumes no responsibility for the improper
performance of the appliance when the venting system
does not meet these requirements.
Figure 13 -
Termination Locations
16 42D0200
Designer Series Gas Fireplaces
Figure 14 -
Allowable Venting Chart
The Vent Graph should be read in conjunction with the following
vent installation instructions to determine the relationship between
the vertical and horizontal dimensions of the vent system.
1. Determine the height of the center of the horizontal vent pipe exit-
ing through the outer wall. Using this dimension on the Sidewall
Vent Graph below, locate the point intersecting with the slanted
graph line.
2. From the point of this intersection, draw a vertical line to the
bottom of the graph.
3. Select the indicated dimension, and position the fireplace in
accordance with same.
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).
If the vertical dimension from the floor of the unit is
7’ (2.14m), the horizontal run to the face of the outer wall must
not exceed 8Z\x' (2.6 m).
Sidewall Vent Graph showing the relationship between vertical and
horizontal dimensions for a Direct Vent flue system.
Figure 15 -
Rear Wall Venting Graph
Horizontal Dimension From the Outside Face of the
Wall to the Center of the Fireplace Vent Flange
Vertical Dimension From the Floor of Unit to the Center of the
Horizontal Vent Pipe
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
2 4 6 8 10 1214 16 1820
eg: A
Dimensions in
Feet
20"
FP2248
sidewall vent graph
V
GG=6" (152mm)
FF=6" (152mm)
V
V
G
G = Combustible 24"(610mm)
Noncombustible 18"(457mm)
Combustible &
Noncombustible
H = 24" (610mm)
J = 20" (508mm)
V
H
J
C = Maximum depth of 48" (1219mm)
for alcove location
D = Minimum width for back wall of
alcove location
Combustible - 38" (965mm)
Noncombustible - 24" (610mm)
E =Clearance from corner in alcove
location
Combustible - 6" (152mm)
Noncombustible - 2" (51mm)
E
V
D
C
C
Inside Corner
Alcove Location
Outside Corner
Balcony with No Side Wall Balcony with Perpendicular
Side Wall
FP1951
termination clearances
42D0200
Designer Series Gas Fireplaces
17
When installed as a rear vent unit this appliance may be vented directly to a termination located on
the rear wall behind the appliance
• The maximum horizontal distance between the rear of the appliance and the outside face of the
rear wall is 20" (508 m). Figure 16
• Only one 45° elbow is allowed in these installations.
1. Locate and cut the vent opening in the wall. For
combustible walls first frame in opening.
Cut a 11Z\x"H x 9Z\x" W (292 x
241 mm) hole through the exterior wall and frame as
shown. Figure 17
Hole opening should be 7Z\x"
(190 mm) in diameter.
2. Rigid vent pipes and fittings have special twist-lock
connections. Assemble the desired combination of
pipe and elbows to the appliance adaptor with pipe
seams oriented towards the wall or floor.
Twist-lock Procedure: The female ends of the pipes
and fittings have three locking lugs (indentations).
These lugs will slide straight into matching slots on
the male end of adjacent pipes and fittings. Push the
pipe sections together and twist one section clockwise
approximately one-quarter turn until the sections are
fully locked. Figure 18
3. Attach vent pipe assembly to the fireplace. Set fire-
place in front of its permanent location to insure mini-
mum clearances. Mark the wall for a 11Z\x"H x 9Z\x"W
(292 x 241 mm) rectangle hole (for noncombustible
material such as masonry block or concrete, a 7Z\x"
[190 mm] diameter hole is acceptable). Figure 17.
The center of the hole should line up with the center
line of the horizontal rigid vent pipe end. Be sure to
allow for minimum rise. Cut a 11Z\x"x9Z\x" rectangle hole
through combustible exterior wall (7Z\x" diameter hole
if noncombustible). Frame as necessary. Allow 1/4"
minimum rise per foot. Figure 17
Figure 16 -
Rear Vent Application, Maximum
Horizontal Distance
Top View Flat
Installation
Figure 17 -
Vent Opening Requirements
FP1954
wall framing
9Z\x"
(241 mm)
11Z\x"
(292 mm)
7Z\x"
(190 mm)
FP1954
Horizontal runs of vent must
be supported every three (3) feet
(914 mm). Use wall straps for this
purpose.
Figure 18 -
Rigid Vent Pipe Connections
Female Locking
Lugs
Male Slots
FP1953
rigid pipe
FP1953
DVR584-600
Rear vent no elbows
2/99 djt
20"
(508 mm)
18 42D0200
Designer Series Gas Fireplaces
4. Apply a bead of non-hardening mastic around the outside
edge of vent cap. Position the vent cap in the center of
hole on the exterior wall with the word “UP” on the vent cap
facing up. Insure proper clearance of 1" to combustibles
is maintained. Attach the vent cap with four wood screws
supplied. Figure 19
Replace the wood screws with appropriate fasteners
for stucco, brick, concrete, or other types of siding.
For vinyl siding, stucco, or wood exterior use vinyl siding
standoffs between vent cap and exterior wall. The vinyl siding
standoff prevents excessive heat from melting the vinyl siding
material. Bolt the vent cap to the standoff. Apply non-harden-
ing mastic around outside edge of the standoff instead of the
vent cap assembly. Use wood screws provided to attach the
standoff. Figure 20
5. Slide fire stop over the vent pipe before connecting hori-
zontal run to vent cap. Figure 21
6. Insert vent pipe into the horizontal termination. The pipe
overlap should be a minimum of 1Z\v". Fasten all vent con-
nections with screws provided.
7. Slide fire stop against the interior wall surface and
attach with screws. Figure 21
(continued)
HOT
FP1956
vinyl siding standoff
Figure 20 -
Installing Vinyl Siding Standoff
Apply
Mastic to All
Four Sides
Cut Vinyl Siding Away
to Fit Standoff
Wood Screw
Vent Cap
Bolt
Nut
Standoff
Deflecting
Shield
HOT
FP1955
horizontal vent cap
Figure 19 -
Installing Horizontal Vent Cap
Vent Cap
Wood Screw
Apply Mastic to
All Four Sides
Deflecting
Shield
FP1955
FP1956
FP1957
install firestop
Figure 21 -
Connecting Vent Cap with Horizontal Vent Pipe
Interior Wall
Surface
Horizontal
Vent Pipe
Screw
Vent Cap
(Horizontal
Termination)
FP1957
42D0200
Designer Series Gas Fireplaces
19
The Vent Graph, showing the relationship between vertical and horizontal
side wall venting, will help to determine the various dimensions allowable.
Figure 22
When vent termination exits through foundations less than 20" below siding
outcrop, the vent pipe must flush up with the siding.
It is 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 (or the top of he Transition Elbow) to the
face of the outer wall.
• The maximum number of 90° elbows per side wall instal-
lation is three (3). Figure 23
• 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). Figure 24
Figure 22 -
Rear Wall Venting Graph
Horizontal Dimension From the Outside Face of the
Wall to the Center of the Fireplace Vent Flange
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
2 4 6 8 10 1214 16 1820
eg: A
Dimensions in
Feet
20"
FP2248
sidewall vent graph
FP1176
max 90 bends
Figure 23 -
Maximum Three (3) 90° Elbows Per Installation
3 x 90°
Elbows
3 x 90°
Elbows
FP1176
Max 20"
Max 20"
36"
(914 mm)
Max.
36"
(914 mm)
Max.
FP1177
max horizontal run
Figure 24 -
Maximum Horizontal Run with No Rise
FP1177
20 42D0200
Designer Series Gas Fireplaces
• If a 90° elbow is used in the horizontal vent run, the horizontal
vent length is reduced by 36" (914 mm). Figure 25. This does
not apply if the 90° elbows are used to increase or redirect a
vertical rise. Figure 25
According to the vent graph, Figure 22, the maximum
horizontal vent length in a system with a 7.5' 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). Refer to Page 17 “How to Use Vent
Graph.”
In Figures 26 and 27, 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°.
Figure 27
(Continued)
7’6”
AB
90°
FP2305
run reduction
Figure 25 -
Horizontal Run Reduction
FP2305
A
10’
B
7’
7’6”
FP2306
max vent run elbows
Figure 26 -
Maximum Vent Run with Elbows
Example: Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total Angular Variation = 270°
A + B = 17' Maximum
90° Elbow = 3'
FP2306
Figure 27 -
Maximum Elbow Usage
1 + 2 + 3 + 4 = 270°
1
2
3
4
1
2
3
4
FP2307
max elbows
FP2307
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