Monessen Hearth Direct Vent Gas Fireplace KHLDV SERIES User manual

MODELS: KHLDV400 & KHLDV500
KHLDV SERIES
DIRECT VENT GAS FIREPLACE
INSTALLATION AND
OPERATING INSTRUCTIONS
READ BEFORE INSTALLING. SAVE THESE INSTRUCTIONS
DUE TO HIGH TEMPERATURES, THE
APPLIANCE SHOULD BE LOCATED OUT OF
TRAFFIC AND AWAY FROM FURNITURE AND
DRAPERIES.
CHILDREN AND ADULTS SHOULD BE
ALERTED TO THE HAZARDS OF HIGH
SURFACE TEMPERATURE AND SHOULD
STAYAWAY TO AVOID BURNS OR CLOTHING
IGNITION.
YOUNG CHILDRENSHOULD BE SUPERVISED
WHEN THEYARE INTHE SAME ROOMAS 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
VAPORS AND LIQUIDS.
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 fire
department.
– Installationandservicemustbeperformedbyaqualified
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 qualified 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 isonly for usewith the typeof gas indicated
on the rating plate. This appliance is not convertible for
use with other gases, unless a certified kit is used.
* Aftermarket: Completion of sale, not for purpose of resale, from the
manufacturer.
WARNING

2 73D0024
CONTENTS
Important Safety Information .......................... 3
Product Features.............................................. 5
Code Approval.................................................. 5
Pre-Installation Information
Installing Above 2000 Feet............................ 6
Orifice 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
Configuration............................................... 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
Remote Wall Switch Installation ................... 26
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

73D0024 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 cloth-
ing 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 liq-
uids. Do not run fireplace where these are used or stored.
Do not place items such as clothing or decorations on or
around fireplace.
INSTALLER
Please leave these instructions with the appliance.
OWNER
Please retain these instructions for future reference .
IMPORTANT SAFETY INFORMATION
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 head-
aches, 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 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 indi-
cated 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. capac-
ity.
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. Continued on page 4
• Read this owner’s manual carefully and completely before trying to assemble, operate,
or service this fireplace.
• Any change to this fireplace or its controls can be dangerous.
• Improper installation or use of this fireplace can cause serious injury or death from
fire, burns, explosions, electrical shock and carbon monoxide poisoning.
WARNING

4 73D0024
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.
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 fire-
place.
21. Do not operate the fireplace with glass door removed,
cracked, or broken.
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
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.
IMPORTANT:
PLEASE READ THE FOLLOWING CAREFULLY
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.
Please ensure that your room is well ventilated
during burn off — open all windows.
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.
Never connect unit to private
(non-utility) gas wells. This
gas is commonly known as
wellhead gas.
WARNING
www.nficertified.org
We suggest that our gas hearth
products be installed and
serviced by professionals who
are certified in the U.S. by the
National Fireplace Institute®
(NFI) as Gas Specialists.

73D0024 5
PRODUCT FEATURES AND CODE APPROVAL
Off/Pilot/On Knob
Figure 1 - KHLDV Series Fireplace
• 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.
Hi/Lo Knob
PRODUCT SPECIFICATIONS
CODE APPROVAL
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 Con-
struction 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.
On/Off/RS Switch
Ignitor
Light Control
Blower Control (optional)
Access Panel
• 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 condi-
tions and was determined independently of any installed system.
Thermal Efficiency = up to 72%

6 73D0024
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"
BEFORE YOU START
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.
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 Orifice Size #35 (.110") #52 (.0635") #30 (.1285") #50 (.070")
Front Orifice Size #49 (.073") #56 (.0465") 2.3 mm #55 (.052")

73D0024 7
H
G
D
F
E
A
C
B
A
1/2"or5/8"
C
A
G
C
G
A1/2" or 5/8"
FIREBOX FRAMING
Firebox framing can be built before or after the appliance
is set in place. Construct firebox framing following Figure
2and the chart below for your specific installation require-
ments. See Figure 3 on page 8 for firebox dimensions. The
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
firebox is installed directly on carpeting, tile, or other com-
bustible 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.
FIREPLACE FRAMING
Do not fill spaces around firebox with
insulation or other materials. This
could cause a fire.
WARNING
Figure 2 - Framing Dimensions
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"
Unit framing is to be rectangular front
to back. Failure to do so will cause fire
and damage to property.
WARNING

8 73D0024
E
H
J
A
D
L
K
C
F
M
B
IG
N
PRE-INSTALLATION INFORMATION
Figure 3 - Fireplace Dimensions
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"

73D0024 9
Y
EAB
C
D
F
Y
X
PRE-INSTALLATION INFORMATION
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 inspec-
tions.
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 loca-
tions.
• 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.
Figure 4 - Locating 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
** 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 Configuration on pages 18 and 19.
* When you install your fireplace in (D) room divider or (E) flat on wall corner positions (Y), a minimum of 6"
clearance must be maintained from perpendicular wall and front of fireplace.
NOTE
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
and under the floor on which the appliance rests, if the floor is above ground level.

10 73D0024
FIREPLACE
WALL
COMBUSTIBLE
MATERIAL
AREA
6"
5"
3"
2.5" 4.5"
45°
3.5"
3.5"
1" 1.5"
1.5"
Follow these instructions carefully to ensure safe installation. Failure to follow
instructions exactly can create a fire hazard.
The appliance cannot be installed on a carpet, tile or other combustible material other
than wood flooring. If installed on carpet or vinyl flooring, the appliance shall be installed
on a metal, wood or noncombustible material panel extending full width and depth of
the appliance.
WARNING
CLEARANCES
CLEARANCES TO COMBUSTIBLES
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.
Figure 5 - Clearances from the mantel,
ceiling, and side wall. Figure 5a - Mantel clearances.

73D0024 11
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.
SECURING FIREPLACE TO FLOOR OR FRAMING
Figure 6 - Securing Fireplace to Floor and Framing Studs
Never install combustible materials
over front face of fireplace.
NOTE

12 73D0024
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.
FINISHING MATERIAL
NOTE: Any remote wiring (i.e. remote control, wall switch, and optional fan) must be done prior to final
finishing to avoid costly reconstruction.
INSTALLATION INFORMATION
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
This fireplace 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

73D0024 13
VENT INSTALLATION
Figure 7 - 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
Horizontalsectionsofthisventsystemrequirea minimumof3"clearancestocombustibles
at the top of the flue and 1" clearance at the sides and bottom until the flue penetrates
the outside wall. A minimum 1" clearance all around the flue 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
the flue is acceptable thereafter.
WARNING
24" vertical rise required
before horizontal run

14 73D0024
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 1/4" rise for every 12" of run towards the
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. 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. 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
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.
Never run the vent pipe level or
downward.Thismaycauseexcessive
temperatures which could cause
a fire.
WARNING
Treatment of firestops 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
Wheninstallinginachase,youshouldinsulatethechaseasyouwouldtheoutsidewallsof
your home.This is especially importantin cold climates. Insulationshould be considered
a combustible material. Maintain proper clearances to all combustible materials.
NOTICE

73D0024 15
V
V
V
V
V
V
V
V
D
L
E
B
C
F
B
B
BB
B
M
I
A
A
J
H
G
A
Operable
Fixed
Closed Fixed
Closed
Opera-
ble
K
A
A
A
G
VENT INSTALLATION
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
could cause high temperatures and may present a fire hazard.
WARNING
Figure 8 - Horizontal Vent Termination Location
Vent Terminal Air Supply Inlet Area Where Terminals Not Permitted
Inside Corner DetailFOR HORIZONTAL TERMINATION
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.

16 73D0024
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
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
2 4 6 8 101214161820
eg: A
VENT INSTALLATION
TERMINATION CLEARANCES FOR BUILDINGS WITH COMBUSTIBLE
AND NONCOMBUSTIBLE EXTERIORS
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 floor of the
fireplace is 11' (3.4m) the horizontal run to the face of the
outer wall must not exceed 14' (4.3m).
Example:If the vertical dimensionfromthefloor oftheunit
is 7’ (2.14m), the horizontal run to the face of the outer
wall must not exceed 81/2' (2.6m).
Sidewall Vent Graph showing the relationship between vertical and
horizontal dimensions for a Direct Vent flue system. Figure 10 - Rear Wall Venting Graph
Horizontal dimension from the finished outside wall
to the center of the pipe on the fireplace
Vertical Dimension From the Floor of Unit to the Center of the
Horizontal Vent Pipe
Dimensions in
Feet
Combustible – 6" (152 mm)
Noncombustible – 2" (51mm)

73D0024 17
24" Min.
• The maximum number of 90° elbows per side wall installation is three (3). See Figure 11.
• A minimum of 24" is required before a 90°elbow. If a 90° elbow is fitted directly after 24" vertical section mounted to
the top of the fireplace, the maximum horizontal vent run before the termination or a vertical rise is 36” (914 mm). See
Figure 12.
VENT INSTALLATION
VERTICAL/HORIZONTAL TERMINATION
CONFIGURATIONS
Since it is very important that the venting system maintain its balance between the combustion air intake and the flue
gas exhaust, certain limitations as to vent configurations apply and must be strictly adhered to.
The Vent Graph, showing the relationship between vertical and horizontal side wall venting, will help to determine the vari-
ous dimensions allowable. See Figure 10.
NOTE: Horizontal sections of this vent system require a minimum of 3" clearances to combustibles at the top of the
flue and 1" clearance at the sides and bottom until the flue penetrates the outside wall. A minimum 1" clearance all
around the flue is acceptable at this point of penetration.
Vertical sections of this vent system require a minimum of 1" clearance to combustibles on all sides of the pipe.
When vent exits through foundations less than 20" below outcrop, the termination must be flush up with outcropped wall
above.
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 the Transition
Elbow) to the face of the finished outside wall.
Figure 11 - Maximum Three (3) 90° Elbows
Per Installation Figure 12 - Maximum Horizontal
Run with No Rise
3 x 90°
Elbows
36"
Max.
36"
Max.
24" Min.

18 73D0024
VERTICAL/HORIZONTAL TERMINATION
CONFIGURATIONS (continued)
• If a 90° elbow is used in the horizontal vent run (level height
maintained) the horizontal vent length is reduced by 36".
See Figures 11 and 12, page 17.This does not apply if the
90° elbows are used to increase or redirect a vertical rise.
See Figure 14.
Example: According to the vent graph (page 16) the
maximum horizontal vent length in a system with a 10'
vertical rise is 20’ (6m) and if a 90° elbow is required in
the horizontal vent it must be reduced to 17' (5.2 m).
In Figures 13 and 14 dimension A plus B must not be greater
than 17' (5.2m).
• 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" (45cm). 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°.
See Figure 15.
Figure 14 - Maximum Vent Run with Elbows
Example: Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total Angular Variation = 270°
Figure 13 - Horizontal Run Reduction
Figure 15 - Maximum Elbow Usage
VENT INSTALLATION
90°
A + B = 17' Maximum
90° Elbow = 3'
1 + 2 + 3 + 4 = 270°
1
2
3
4
10'
AB
10'
10' 7'
A
B
24" Min.

73D0024 19
VENT INSTALLATION
BELOW GRADE INSTALLATIONS
When it is not possible to meet the required vent terminal clearances of 12" above grade level, a snorkel kit is recommended.
It allows installation depth down to 7" (178mm) below grade level. The 7" (178mm) is measured from the center of the
horizontal vent pipe as it penetrates through the wall.
Ensure that sidewall venting clearances are observed. If venting system is installed below ground, we recommend a
window well with adequate and proper drainage to be installed around the termination area.
If installing a snorkel, a minimum 24" vertical rise is necessary. The maximum horizontal run with the 24” vertical pipe is
36". 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".
1. Establish vent hole through the wall.
2. Remove soil to a depth of approximately 16" below base of snorkel. Install drain pipe. Install window well (not supplied).
Refill hole with 12" of coarse gravel leaving a clearance of approximately 4" below snorkel. See Figure 16.
3. Install vent system.
4. Ensure a watertight seal is made around the vent pipe coming through the wall.
5. Apply high temperature sealant caulking (supplied) around the 5" and 8" snorkel collars.
6. Slide the snorkel into the vent pipes and secure to the wall.
7. Level the soil so as to maintain a 4" clearance below snorkel. See Figure 16.
• Do not back fill around snorkel.
• A clearance of at least 4" must be maintained between the
snorkel and the soil.
WARNING
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 #8x1/2sheet metal screws. It will be necessary to extend vent pipes out as
far as the protruding wall face. See Figure 17.
Figure 17 - Snorkel Installation,
Recessed Foundation
Figure 16 - Below Grade Installation
Screws
Minimum
4" Clearance
Ground
Window Well
Gravel
Drain
Foundation Wall
Firestop
24"
Minimum
Foundation
Recess
Watertight Seal
Around Pipe Sheet Metal
Screws
Wall Screws
Snorkel

20 73D0024
40' Maximum Height
12' Minimum Height
10'
Maximum
Support Straps
Every 3'
24" Min.
24" Min.
VERTICAL (THROUGH-THE-ROOF)
APPLICATIONS
This gas fireplace has been approved for,
• Vertical installations up to 40' (12m) in height. Up to a 10'
(3m) horizontal vent run can be installed within the vent
system using a maximum of two 90° elbows. See Figure
18.
Figure 18 - Support Straps for
Horizontal Runs
VENT INSTALLATION
Figure 19 - Maximum Elbow Usage
• Up to two 45° elbows may be used within the horizontal
run. For each 45° elbow used on the horizontal plane,
the maximum horizontal length must be reduced by 18"
(450mm).
Example: Maximum horizontal length
No elbows = 10’ (3m)
1x45° elbows = 8.5’ (2.6m)
2x45° elbows = 7’ (2.1m)
• A minimum of an 8' (2.5m) vertical rise is required.
• Two sets of 45°elbows 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. See Figure 19.
• The maximum angular variation allowed in the system is
270°. See Figure 19.
• The minimum height of the vent above the highest point
of penetration through the roof is 2' (610mm).
1
2
3
4
Example: Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total Angular Variation = 270°
NOTE: Horizontal sectionsof this vent system require
a minimumof 3" clearances tocombustibles at thetop
of the flue and 1" clearance at the sides and bottom
until the flue penetrates the outside wall.A minimum
1" clearance all around the flue is acceptable at this
point of penetration.
Vertical sections of this vent system require a
minimum of 1" clearance to combustibles on all sides
of the pipe.