Monessen Hearth KHLDV User Manual
KHLDV SERIES
DIRECT VENT GAS FIREPLACE
INST ALLATION AND
OPERATING INSTRUCTIONS
MODELS: KHLDV400 & KHLDV500
IF THE INFORMATION IN THESE INSTRUCTIONS IS NOT
FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY
RESULT CAUSING PROPERTY DAMAGE, PERSONAL
INJURY OR LOSS OF LIFE.
– Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
– WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any 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.
• If you cannot reach your gas supplier, call the fi re
department.
– Installation and service must be performed by a qualifi ed
installer, service agency or the gas supplier.
WARNING: Improper installation, adjustment, alteration,
services or maintenance can cause injury or property
damage. Refer to this manual. For assistance or additional
information consult a qualifi ed installer, service agency
or the gas supplier.
This appliance may be installed in an aftermarket*,
permanently located, manufactured home (USA only) 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 certifi ed kit is used.
* Aftermarket: Completion of sale, not for purpose of resale, from the
manufacturer.
WARNING
DUE TO HIGH TEMPERATURES, THE
APPLIANCE SHOULD BE LOCATED OUT OF
TRAFFIC AND AW A Y FROM FURNITURE AND
DRAPERIES.
CHILDREN AND ADULTS SHOULD BE
ALERTED TO THE HAZARDS OF HIGH
SURFACE TEMPERATURE AND SHOULD
ST A Y A W A Y T O A VOID BURNS OR CLOTHING
IGNITION.
YOUNG CHILDREN SHOULD BE SUPERVISED
WHEN THEY ARE IN THE SAME ROOM AS THE
APPLIANCE.
CLOTHING OR OTHER FLAMMABLE
MATERIAL SHOULD NOT BE PLACED ON
OR NEAR THE APPLIANCE.
KEEP THE ROOM AREA CLEAR AND
FREE FROM COMBUSTIBLE MATERIALS,
GASOLINE, AND OTHER FLAMMABLE
V APORS AND LIQUIDS.
READ BEFORE INSTALLING. SAVE THESE INSTRUCTIONS
CONTENTS
Important Safety Information ..........................3
Product Features .............................................. 5
Code Approval ..................................................5
Pre-Installation Information
Installing Above 2000 Feet ............................ 6
Orifi ce Sizes, Pressures and BTUs ...............6
Before You Start ............................................ 6
Fireplace Framing ......................................... 7
Fireplace Dimensions.................................... 8
Fireplace Location ......................................... 9
Clearances ...................................................... 10
Securing Fireplace to Floor or Framing ........11
Installation Information .................................. 12
Vent Installation .............................................. 13
Installation Planning .................................... 14
Vertical/Horizontal Termination
Confi guration ............................................... 17
Below Grade Installation ............................. 19
Vertical Through-the-Roof Applications ....... 20
Installation for Vertical Termination ............. 21
Fireplace Installation ...................................... 23
Check Gas Type .......................................... 23
Installing Gas Piping to Fireplace/Burner
System Location.......................................... 23
Checking Gas Pressure ................................. 25
Electrical Installation...................................... 25
Electrical Wiring ..........................................25
Optional Fan/Blower Systems ....................... 26
Glass Removal ................................................ 29
Final Installation ............................................. 30
Hearth Brick Placement .............................. 30
Rockwool Placement................................... 30
Log Placement ............................................ 31
Operating Instructions (Milli-Volt) ................. 33
Lighting Pilot for the First Time....................33
Lighting Pilot................................................ 34
Lighting Burner ............................................ 35
To Turn Off Gas ........................................... 35
Cleaning and Maintenance ............................ 36
Burner, Pilot and Control Compartment ...... 36
Pilot Flame .................................................. 36
Burner Flame .............................................. 36
Vent System ................................................ 37
Glass Door .................................................. 37
Logs ............................................................ 37
Rock Wool .................................................. 37
Troubleshooting .............................................38
Illustrated Parts Lists ..................................... 40
Firebox Components ................................... 40
Standing Pilot Millivolt Control .................... 42
Vent Components........................................44
Logs ............................................................ 45
Mass Residents Only ..................................... 46
Warranty ...........................................Back Cover
Remote Wall Switch Installation ...................26
2 73D0024
IMPORTANT SAFETY INFORMATION
INSTALLER
Please leave these instructions with the appliance.
• Read this owner’s manual carefully and completely before trying to assemble, operate,
or service this fi replace.
• Any change to this fi replace or its controls can be dangerous.
• Improper installation or use of this fi replace can cause serious injury or death from
WARNING
fi re, burns, explosions, electrical shock and carbon monoxide poisoning.
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.
CARBON MONOXIDE POISONING: Early signs of
carbon monoxide poisoning are similar to the flu with headaches, dizziness and/or nausea. If you have these signs, the
fireplace 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 odormaking 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 lbs. 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.
OWNER
Please retain these instructions for future reference
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 cir-
culating air passages clean. More frequent cleaning may
be needed due to excessive lint and dust. 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. See Cleaning and Maintenance, page 35.
11. Keep the area around your fireplace clear of combustible
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 decorations on or
around fireplace.
Continued on page 4
.
73D0024 3
IMPORTANT SAFETY INFORMATION
Continued from page 3
12. Do not use this fireplace to cook food or burn paper or
other objects.
13. Never place anything on top of fireplace.
14. Do not use any solid fuels (wood, coal, paper, cardboard,
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.
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
It is normal for fi replaces 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.
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
It is not unusual for gas fi replaces to give off some
odor the fi rst time it is burned. This is due to the
manufacturing process.
Please ensure that your room is well ventilated
during burn off — open all windows.
It is recommended that you burn your fi replace for
at least ten (10) hours the fi rst time you use it. Place
the fan switch in the “OFF” position during this time.
18. Do not use fireplace if any part has been exposed to or
has been under water. Immediately call a qualified service
technician to inspect the appliance and replace any part
of the control system and any gas control which as been
submerged in water.
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.
Never connect unit to private
(non-utility) gas wells. This
gas is commonly known as
wellhead gas.
WARNING
We suggest that our gas hearth
products be installed and
serviced by professionals who
are certifi ed in the U.S. by the
National Fireplace Institute
(NFI) as Gas Specialists.
®
www.nfi certifi ed.org
4 73D0024
PRODUCT SPECIFICATIONS
PRODUCT FEATURES AND CODE APPROVAL
• 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 bedsitting
room installations.
• The appliance must be installed in accordance with
local codes if any. If none exist use the current
installation code. ANSI Z223.1/NFPA 54 in the
USA, CAN/CGA B149 in Canada.
Access Panel
Blower Control (optional)
Light Control
Off/Pilot/On Knob
Hi/Lo Knob
On/Off/RS Switch
Ignitor
Figure 1 - KHLDV Series Fireplace
• This appliance is mobile home approved.
• 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 continuous operating conditions and was determined independently of any installed system.
Thermal Efficiency = up to 72%
CODE APPROV AL
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:
LISTED VENTED GAS FIREPLACE HEATER
TESTED TO: ANSI Z21.88-2005/CSA 2.33-2005 STANDARDS
A manufactured home (USA only) or mobile home OEM installation must conform with the Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280, or when such a standard is not applicable, the Standard for
Manufactured Home Installations, ANSI/NCSBCS A225.1, or Standard for Gas Equipped Recreational Vehicles and
Mobile Housing, CSA Z240.4.
73D0024 5
PRE-INSTALLATION INFORMATION
INSTALLING ABOVE 2000 FEET
• In the USA, the appliance must be derated 4% for every 1,000 ft above 2,000 ft elevations. Where the heating value of
the gas has been reduced, these rules do not apply.
• In Canada, these appliances are certified for altitudes of 0 – 2000 ft, and must be de-rated by 10 percent for installations
between 2000 and 4,500 ft. (derate an additional 4% for every 1,000 ft. above 4,500 ft. elevations).
ORIFICE SIZES, PRESSURES AND BTUs
NATURAL GAS PROPANE GAS
Manifold Press: (W.C.) 3.5" Manifold Press: (W.C.) 10"
Maximum Supply Pressure 10.5" Maximum Supply Pressure 13"
Minimum Supply Pressure 4.5" Minimum Supply Pressure 11"
Model Number KHLDV400 KHLDV500
Gas Type Natural Propane Natural Propane
Max. Btu/hr Input 40,000 40,000 50,000 50,000
Min. Btu/hr Input 28,500 30,500 35,500 38,500
Rear Orifi ce Size #35 (.110") #52 (.0635") #30 (.1285") #50 (.070")
Front Orifi ce Size #49 (.073") #56 (.0465") 2.3 mm #55 (.052")
BEFORE YOU ST ART
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)
• Rock Wool
• Log Set
ITEMS REQUIRED FOR INSTALLATION
Tools: Building Supplies:
• Phillips Screwdriver • Framing materials
• Hammer • Wall finishing materials
• Saw and/or saber saw • Non-combustible finishing material or dura-rock*
• Pipe Wrench • Caulking material (non-combustible)
• Level • Fireplace surround material (non-combustible)
• Measuring Tape • Piping complying with local codes
• Electric Drill and Bits • Tee joint
• Pliers • Pipe sealant approved for use with propane/LPG
• Square (resistant to sulfur compounds)
* Only used if desired to cover painted face other than using tiles or marble. If tiles or marble are used around the face then
the non-combustible material is not needed.
6 73D0024
FIREBOX FRAMING
FIREPLACE FRAMING
Firebox framing can be built before or after the appliance
is set in place. Construct firebox framing following Figure
2 and the chart below for your specific installation requirements. See Figure 3 on page 8 for firebox dimensions. The
Unit framing is to be rectangular front
to back. Failure to do so will cause fi re
and damage to property.
WARNING
framing headers may rest on the top of the firebox standoffs.
Do not bring headers below top of standoffs. Please note:
When planning your framing and installation, keep in mind that your gas line will come in on the right side of the box (as
you are facing it) and your electricity will come in on the left side.
The firebox may be installed directly on a combustible floor
or raised on a platform of an appropriate height. When the
Do not fi ll spaces around fi rebox with
insulation or other materials. This
could cause a fi re.
WARNING
D
H
F
G
C
A
E
firebox is installed directly on carpeting, tile, or other combustible material, other than wood flooring, the firebox shall
be installed on a metal or wood panel extending the full width
and depth of the enclosure.
KHLDV400 KHLDV500
A 45 5/16" 49 5/16"
B 44 3/4" 44 3/4"
C 28 1/8" 32 1/8"
D 14 1/16" 16 1/16"
E 75 7/8" 79 7/8"
F 37 15/16" 39 15/16"
G 23 7/8" 23 7/8"
H 53 5/8" 56 7/16"
C
G
A
1
/2"or5/8"
C
G
B
A
Figure 2 - Framing Dimensions
73D0024 7
A
1
/2" or 5/8"
PRE-INSTALLATION INFORMATION
FIREPLACE DIMENSIONS
E
J
H
D
A
K
F
M
C
B
L
I
G
N
Figure 3 - Fireplace Dimensions
DESCRIPTION Key Letter KHLDV400 KHLDV500
Overall Front Width A 44 15/16" 48 15/16"
Inside Width B 35 1/2" 39 1/2"
Glass Width C 32" 36"
CTR Pipe D 22 1/2" 24 1/2"
Rear Width E 28 1/8" 32 1/8"
Glass Height F 30" 30"
Chassis Height G 38 7/16" 38 7/16"
Depth H 23 7/8" 23 7/8"
Height to Standoffs I 44 3/8" 44 3/8"
CTR Height J 8 9/16" 8 9/16"
Top Face K 4 1/4" 4 1/4"
Side Face L 4" 4"
Bottom Face M 38 1/16" 38 1/16"
Finish Hearth Rise N 1" 1"
8 73D0024
PRE-INSTALLATION INFORMATION
COLD CLIMATE INSULATION
If you live in a cold climate, seal all cracks around your appliance, and wherever cold air could enter the room,
with noncombustible material. It is especially important to insulate the outside chase cavity between the studs
NOTE
and under the floor on which the appliance rests, if the floor is above ground level.
FIREPLACE LOCATION
Plan for the installation of your appliance. This includes determining where the unit is to be installed, the vent configuration
to be used, framing and finishing details, and whether any optional accessories (i.e. blower, wall switch, or remote control)
are desired. Consult your local building code agency to ensure compliance with local codes, including permits and inspections.
The following factors should be taken into consideration:
• Clearance to side-wall, ceiling, woodwork, and windows. Minimum clearances to combustibles must be maintained.
• This fireplace may be installed along a wall, across a corner, or use an exterior chase. See Figure 4 for suggested locations.
• Location should be out of high traffic areas and away from furniture and draperies due to heat from appliance.
• Never obstruct the front opening of the fireplace.
• Do not install in the vicinity where gasoline or other flammable liquids may be stored.
• Vent pipe routing. See Venting section found in this manual for allowable venting configurations.
• These units can be installed in a bedroom. See National Fuel Gas Code ANSI Z233.1/NFPA 54 — (current edition), the
Uniform Mechanical Code — (current edition), and Local Building Codes for specific installation requirements.
• These units can be installed in a bathroom.
A Flat on Wall
B Cross Corner
C Island**
E
Y
A
B
D Room Divider*
E Flat on Wall Corner*
C
X
F Chase Installation
Y 6" Minimum
D
Y
F
Figure 4 - Locating Gas Fireplace
** Island (C) and room divider (D) installation is possible as long as the horizontal portion of vent system (X)
does not exceed 20'. See Installing Horizontal Termination Confi guration on pages 18 and 19.
* When you install your fi replace in (D) room divider or (E) fl at on wall corner positions (Y), a minimum of 6"
clearance must be maintained from perpendicular wall and front of fi replace.
73D0024 9
CLEARANCES
CLEARANCES TO COMBUSTIBLES
Follow these instructions carefully to ensure safe installation. Failure to follow
in struc tions exactly can create a fi re hazard.
The appliance cannot be installed on a carpet, tile or other combustible material other
than wood fl ooring. If installed on carpet or vinyl fl ooring, the appliance shall be installed
on a metal, wood or noncombustible material panel ex tend ing full width and depth of
WARNING
the appliance.
COMBUSTIBLE
MATERIAL
6"
WAL L
1.5"
1.5"
AREA
3.5"
3.5"
4.5"
45°
Figure 5 - Clearances from the mantel,
FIREPLACE
1"
2.5"
3"
5"
Figure 5a - Mantel clearances.
ceiling, and side wall.
MANTEL CLEARANCES
NOTE: 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.
10 73D0024
SECURING FIREPLACE TO FLOOR OR FRAMING
The fireplace must be secured to the floor and/or to framing studs as shown in Figure 6. 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 nailing flanges
are 1/2" or 5/8" to accommodate different wall thickness.
Never install combustible materials
over front face of fi replace.
NOTE
Figure 6 - Securing Fireplace to Floor and Framing Studs
73D0024 11
INSTALLATION INFORMATION
FINISHING MATERIAL
NOTE: Any remote wiring (i.e. remote control, wall switch, and optional fan) must be done prior to fi nal
fi nishing 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. It is permissible to bring combustible wall board to the top of the stand offs on
the top and the sides of the unit. 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.
VENT INSTALLATION
Read all instructions completely and thoroughly before attempting installation. Failure
to do so could result in serious injury, property damage or loss of life. Operation of
improperly installed and maintained venting system could result in serious injury,
property damage or loss of life.
WARNING
Failure to follow these instructions will
void the warranty.
NOTICE
INSTALLATION PRECAUTIONS
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 venting 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 venting system:
• Installation of any damaged venting component.
• Unauthorized modification of the venting system.
• Installation of any component part not manufactured or approved by MHS.
• Installation other than permitted by these instructions.
This fi replace must be vented to the outside. The venting system must NEVER be
attached to a chimney serving a separate solid fuel burning appliance. Each gas
appliance must use a separate vent system. Do not use common vent systems.
WARNING
12 73D0024
VENT INSTALLATION
Horizontal sections of this vent system require a minimum of 3" clearances to combustibles
at the top of the fl ue and 1" clearance at the sides and bottom until the fl ue penetrates
the outside wall. A minimum 1" clearance all around the fl ue is acceptable at this point
of penetration.
Vertical sections of this vent system require a minimum of 2" clearance to combustibles
at the top of the unit directly above the stand-off. A minimum of 1" clearance all around
WARNING
the fl ue is acceptable thereafter.
A minimum of 3" clearance to the top is
required along horizontal length until fl ue
pipe penetrates outside wall.
A minimum 1"
clearance to
combustibles
permitted all
around fl ue at
outside wall
24" vertical rise required
before horizontal run
Figure 7 - Combustible Clearances for Vent Pipe
73D0024 13
VENT INSTALLATION
INSTALLATION PLANNING
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.
FOR HORIZONTAL TERMINATION
Select the amount of vertical rise desired. All horizontal run
of venting must have
termination.
You may use up to three 90° elbows in this vent configuration.
See Vertical/Horizontal Termination Configurations on pages
17 and 18.
FOR VERTICAL TERMINATION
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.
NOTE: You may use two 45° elbows in place of a 90° elbow . Y ou 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. See Installing A Vent System
in an Outside 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.
INSTALLING A VENT SYSTEM IN AN OUTSIDE CHASE
1
/4" rise for every 12" of run towards the
Never run the vent pipe level or
downward. This may cause excessive
temperatures which could cause
a fi re.
WARNING
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.
Treatment of fi restops and construction of the chase may vary from building type to
building type. These instructions are not substitutes for the requirements of local
building codes. You must follow all local building codes.
NOTICE
When installing in a chase, you should insulate the chase as you would the outside walls of
your home. This is especially important in cold climates. Insulation should be considered
a combustible material. Maintain proper clearances to all combustible materials.
NOTICE
14 73D0024
VENT INSTALLATION
Inside Corner Detail FOR HORIZONTAL TERMINATION
G
V
H
D
E
B
L
Vent Terminal Air Supply Inlet Area Where Terminals Not Permitted
V
C
Fixed
V
Closed
F
Operable
V
B
A
BB
B
Opera-
ble
V
A
V
Fixed
Closed
J
V
A
B
Figure 8 - Horizontal Vent Termination Location
MINIMUM DISTANCES
A = Clearance above the grade, a veranda, porch, deck, or balcony [*12" (305mm) minimum].
B = Clearance to window or door that may be opened [*12" (305mm) minimum].
C = Clearance to permanently closed window [*minimum 12" (305mm) recommended to prevent condensation on
window]
D
= Vertical clearance to ventilated soffit located above the terminal within a horizontal distance of two (2) feet (610mm)
from the centerline of the terminal [18" (457mm) minimum].
E = Clearance to unventilated soffits [12" (305mm) minimum]. Clearance to vinyl soffit [30" (762mm)].
F = Clearance to an outside corner. See Figure 9.
G = Clearance to an inside corner. See Figure 9.
H = *Not to be installed above a gas meter/regulator assembly within three (3) feet (914mm) horizontally from the centerline
of the regulator.
I = Clearance to service regulator vent outlet [*3' (914mm) minimum].
J = Clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other appliance [*12"
(305mm)minimum].
K = Clearance to a mechanical air supply inlet [*6' (1829mm) minimum].
L = Clearance above a paved sidewalk or paved driveway located on public property [**7' (2133mm) minimum].
M = Clearance under veranda, porch, deck, or balcony [*12" (305mm) minimum
* As specified in CAN/CGA B149 Installation Codes. Note: Local codes or regulations may require different
clearances.
** A vent must 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 of two sides beneath the floor.
A
G
I
M
V
***
A
K
].
A
Always maintain minimum clearances around vent systems. The minimum clearances
to combustibles for horizontal vent pipe are 3" at the top and 1" at the sides and bottom
of the vent system until the pipe penetrates the nearest vertical wall (1" required). A
1" minimum clearance all around the pipe must be maintained at outside wall and on
vertical runs. Do not pack the open air spaces with insulation or other materials. This
WARNING
could cause high temperatures and may present a fi re hazard.
73D0024 15
VENT INSTALLATION
TERMINATION CLEARANCES FOR BUILDINGS WITH COMBUSTIBLE
AND NONCOMBUSTIBLE EXTERIORS
G G=6" (152mm)
V
Combustible – 6" (152 mm)
Noncombustible – 2" (51mm)
Inside Corner
V
F
Outside Corner
F=6" (152mm)
H
G
V
Combustible &
G = Combustible 24"(610mm)
Noncombustible 18"(457mm)
Balcony with No Side Wall Balcony with Perpendicular
Noncombustible
H = 24" (610mm)
J = 20" (508mm)
V
J
Side Wall
Figure 9 - Allowable Venting Chart
HOW TO USE THE VENT GRAPH
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
exiting 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.
Example: If the vertical dimension from the fl oor of the
fi replace is 11' (3.4m) the horizontal run to the face of the
outer wall must not exceed 14' (4.3m).
Example: If the vertical dimension from the fl oor of the unit
is 7’ (2.14m), the horizontal run to the face of the outer
wall must not exceed 8
Sidewall Vent Graph showing the relationship between vertical and
horizontal dimensions for a Direct Vent flue system.
1
/2' (2.6m).
D
C
C
V
E
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)
Alcove Location
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
Horizontal dimension from the fi nished outside wall
to the center of the pipe on the fi replace
Dimensions in
Feet
eg: A
2 4 6 8 10121416 1820
Vertical Dimension From the Floor of Unit to the Center of the
Horizontal Vent Pipe
Figure 10 - Rear Wall Venting Graph
16 73D0024
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