Vermont Castings KSTDV500(N/P)TSCSB, KSTDV500NTSC, KSTDV500PTSC Installation And Operating Instructions Manual
For models purchased after 4/16/15, please see addendum.
KSTDV Series Direct Vent Gas Fireplace
Installation and Operating Instructions
Model: KSTDV500(N/P)TSCSB
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly
could result in serious injury, death or
property damage.
• Do not store or use gasoline or other
fl ammable 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.
– Leave the building immediately.
– 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, service 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 is for use only 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.
CERTIFIED
SAFETY BARRIER
DANGER
HOT GLASS WILL
CAUSE BURNS.
DO NOT TOUCH GLASS
UNTIL COOLED.
NEVER ALLOW CHILDREN
TO TOUCH GLASS.
A barrier designed to reduce the risk of burns from the hot
viewing glass is provided with this appliance and shall
be installed for the protection of children and
other at risk individuals.
20306543
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for
future reference.
20306743 11/14 Rev. 1
KSTDV Series Gas Fireplace
Thank you and congratulations on your purchase of a Vermont Castings Group Fireplace!
PLEASE READ THE INSTALLATION AND OPERATION INSTRUCTIONS BEFORE USING THE APPLIANCE!
IMPORTANT: Read all instructions and warnings carefully before starting installation.
Failure to follow these instructions may result in a possible fi re hazard and will void the warranty.
CONTENTS
Important Safety Information ......................................3
Code Approval ..............................................................4
Product Features ..........................................................5
High Elevations ........................................................5
Gas Pressures .........................................................5
Gas Specifi cations & Orifi ce Sizes ...........................5
Fireplace & Framing Dimensions................................6
Pre-Installation Information .........................................7
Before You Start .......................................................7
Fireplace Framing ....................................................7
Fireplace Location ....................................................8
Clearances ....................................................................9
Clearances to combustibles .....................................9
Mantel clearances ....................................................9
Fireplace Installation ..................................................10
Secure Fireplace to Floor or Framing ....................10
Finishing Material ...................................................10
Venting Installation .....................................................11
Installation Precautions .......................................... 11
Installation Planning ...............................................12
For Horizontal Termination .....................................12
For Vertical Termination .........................................12
Installing a Vent System in an Outside Chase .......12
Termination Location ..............................................13
Termination Clearances .........................................14
How to Use the Vent Graph ...................................14
Vertical Sidewall Installation ...................................15
Vertical/Horizontal Termination Confi gurations ......16
Below Grade Installation ........................................17
Vertical Through-the-Roof Applications ..................18
Installation for Vertical Termination ........................19
Flat Ceiling Installation ...........................................19
Termination height for Vents Above Flat or
Sloped Roofs ....................................................20
Gas Pipe Installation ..................................................21
Check Gas Type.....................................................21
Installation Items Needed ......................................21
Install Gas Supply Line ..........................................22
Checking Gas Pressure and Electrical Installation 23
Check Gas Pressure ..............................................23
Electrical Wiring .....................................................23
Junction Box Wiring ...............................................24
Command Center Wall Installation .........................24
Wall Switch Installation ..........................................24
Signature Command Wiring Diagram ....................25
Optional Fan/Blower Systems ..................................26
BLOTKSTSC Signature Command Blower ............26
Final Installation .........................................................27
Glass Frame Removal ...........................................27
Light & Brick Installation .........................................27
Rock Wool Placement ............................................28
Log Placement .......................................................29
Safety Barrier Installation Instructions ...................31
Operating Instructions ...............................................32
Read Before Lighting .............................................32
Operating Instructions ............................................33
To Turn Off Gas ......................................................33
Signature Command System Operation
Instructions ..........................................................34
Features .................................................................34
Battery Installation .................................................34
System Confi guration/Setup ..................................34
Cold Climate Option ...............................................34
Key Combinations for System Settings ..................35
Functions/Operation ...............................................36
Command Center Operations ................................36
Self Diagnostics Chart ...........................................36
Touch Screen Remote Transmitter Operation .........37
Function Areas of LCD Display ..............................37
Initialization and Set Up .........................................37
Functions and Operations ......................................39
Safety Featuress ....................................................41
Using the Mounting Base .......................................42
Cleaning and Maintenance ........................................43
Burner, Pilot and Control Compartment .................43
Pilot Flame .............................................................43
Burner Flame .........................................................43
Vent System ...........................................................44
Glass Door .............................................................44
Logs .......................................................................44
Rock Wool .............................................................44
Troubleshooting .........................................................45
Signature Command System .................................45
Replacement Parts .....................................................46
Firebox Components and Accessories ..................46
Signature Command System Components ............47
Logs .......................................................................49
Accessories ............................................................50
Vent Components ..................................................51
Massachusetts Residents Only.................................54
Warranty ......................................................................55
Effi ciencies..................................................................56
2
20306743
IMPORTANT SAFETY INFORMATION
KSTDV Series Gas Fireplace
INSTALLER
Please leave these instructions with the appliance.
OWNER
Please retain these instructions for future reference
WARNING
• 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 fi re, burns, explosions,
electrical shock and carbon monoxide poisoning.
This fi replace is a vented product. This fi replace must be
properly installed by a qualifi ed service person. The glass
door must be properly seated and sealed. If this unit is not
properly installed by a qualifi ed 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 fl u with headaches,
dizziness and/or nausea. If you have these signs, the fi re-
place may not have been installed properly. Get fresh air
at once! Have the fi replace inspected and serviced by a
qualifi ed 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 infl uence 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 fi replace.
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 certifi ed
kit is used.
2. For propane/LP fi replace, 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 neigh-
bor’s phone. Follow the gas supplier’s instructions.
4. Never install the fi replace
• in a recreational vehicle
• where curtains, furniture, clothing, or other fl am-
mable objects are less than 42" from the front, top,
or sides of the fi replace
• in high traffi c areas
• in windy or drafty areas
5. This fi replace reaches high temperatures. Keep chil-
dren 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 fi replace.
7. Do not modify fi replace under any circumstances. Any
parts removed for servicing must be replaced prior to
operating fi replace.
8. Turn fi replace off and let cool before servicing, install-
ing, or repairing. Only a qualifi ed service person should
install, service, or repair the fi replace. 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. Turn off
the gas valve and pilot light before cleaning fi replace.
10. Have venting system inspected annually by a qualifi ed service person. If needed, have venting system
cleaned or repaired. Refer to Cleaning and Mainte-
nance,.
11. Keep the area around your fi replace clear of combus-
tible materials, gasoline, and other fl ammable vapor
and liquids. Do not run fi replace where these are used
or stored. Do not place items such as clothing or decorations on or around fi replace.
12. Do not use this fi replace to cook food or burn paper or
other objects.
13. Never place anything on top of fi replace.
14. Do not use any solid fuels (wood, coal, paper, cardboard, etc.) in this fi replace. Use only the gas type
indicated on rating plate.
.
20306743
3
KSTDV Series Gas Fireplace
IMPORTANT SAFETY INFORMATION & CODE APPROVAL
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/NFP A 70, or the Canadian Electrical Code,
CSA C22.1.
16. Do not obstruct the fl ow 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
fl ooring, 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 fi replace if any part has been exposed to
or has been under water. Immediately call a qualifi ed
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 fi replace 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
fi replace.
21. Do not operate the fi replace with glass door removed,
cracked, or broken.
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 Z21.88-2014 / CSA 2.33-2014
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.
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 replace 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.
Never connect unit to private (non-utility)
gas wells. This gas is commonly known
as wellhead gas.
WARNING
4
20306743
PRODUCT FEATURES
PRODUCT SPECIFICATIONS
•
This appliance has been certifi ed 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, CSA B149 in
Canada.
• 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.
KSTDV Series Gas Fireplace
Control Box
Gas Valve
Command
Center
HIGH ELEVATIONS
Input ratings are shown in BTU per hour and are certifi ed
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,
installations must be in accordance with the current ANSI
Z223.1/NFPA 54 and/or local codes having jurisdiction.
In Canada, please consult provincial and/or local authorities having jurisdiction for installations at elevations
above 4,500 feet (1,370 m).
GAS PRESSURES
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.
Figure 1 KSTDV Controls
GAS SPECIFICATIONS & ORIFICE SIZE
BTU/HR Input
Front
Max. All
Model Fuel
KSTDV500 Nat. 56,000 37,000 30,000
KSTDV500 LP 56,000 44,000 27,000
Model Fuel
KSTDV500 Nat. #46 #29
KSTDV500 LP #56 #50
Burners
Front (2) Middle
Min. All
Burners
Orifi ce Size
Burners
Only
20306743
5
KSTDV Series Gas Fireplace
FIREPLACE & FRAMING DIMENSIONS
Rough
Opening
Depth
(584 mm)
Rough
Opening
Height
(1137 mm)
23”
446M”
25”
(635 mm)
50” (1270 mm)
Rough Opening Width
36” (914 mm)
396” (1007 mm)
4956O” (1257 mm)
1156O”
(292 mm)
456M”
(108 mm)
4456O”
(1130 mm)
30"
(762 mm)
1/2” or 5/8”
Recessed
Nailing Flange
386”
(981 mm)
24”
(610 mm)
Figure 2 Fireplace and Framing Dimensions
NOTE: For exterior wall applications, outdoor facing kit KST500SSDK is required. In these installations, the control-side
of the unit MUST face towards the interior of the building.
6
20306743
PRE-INSTALLATION INFORMATION
KSTDV Series Gas Fireplace
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)
• Log Set • Fasteners
• Rock Wool • Restrictor Plate/Disc (2)
• White Toggle Switch • Switch Cover Plate
ITEMS REQUIRED FOR INSTALLATION
• Phillips Screwdriver • Framing Materials
• Hammer • Wall Finishing Materials
• Saw and/or saber saw • Level
• Measuring Tape • Pliers
• Electric Drill and Bits • Square
• Pipe Wrench • Tee Joint
• Noncombustible Panel
• Caulking Material (noncombustible)
• Fireplace Surround Material (noncombustible)
• Piping Complying with Local Codes
• Pipe Sealant Approved for use with Propane/LPG
(Resistant to sulfur compounds)
FIREBOX FRAMING
Firebox framing can be built before or after the appliance
is set in place. Construct fi rebox framing following Figure
2 for your specifi c installation requirements. The framing
headers may rest on the top of the fi rebox standoffs. Do
not bring headers below top of standoffs. 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 fi rebox may be installed directly on a combustible fl oor
or raised on a platform of an appropriate height. When
the fi rebox is installed directly on carpeting, tile, or other
combustible material, other than wood fl ooring, the fi rebox
shall be installed on a metal or wood panel extending the
full width and depth of the enclosure.
Do not fi ll spaces around fi rebox with
insulation or other materials. This could
cause a fi re.
WARNING
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
NOTE
the outside chase cavity between the studs
and under the fl oor on which the appliance
rests, if the fl oor is above ground level.
NOTE: Refer to cold climate pilot information on Page 43
for more information on standing pilot vs. intermittent pilot
options.
20306743
7
KSTDV Series Gas Fireplace
PRE-INSTALLATION INFORMATION
FIREPLACE LOCATION
Plan for the installation of your appliance. This includes
determining where the unit is to be installed, the vent
confi guration to be used, framing and fi nishing 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 main-
tained.
• This fi replace may be installed along a wall, across a
corner, or use an exterior chase. Refer to Figure 3 for
suggested locations.
• Location should be out of high traffi c areas and away
from furniture and draperies due to heat from appliance.
• Never obstruct the front opening of the fi replace.
• Do not install in the vicinity where gasoline or other
fl ammable liquids may be stored.
• Vent pipe routing. See Venting section found in this
manual for allowable venting confi gurations.
• 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 specifi c installation
requirements.
• These units can be installed in a bathroom.
NOTE: For exterior wall applications, outdoor facing kit
KST500SSDK is required. In these installations, the control-side of the unit MUST face towards the interior of the
building.
D
Y
C
Y
E
Figure 3 Locate Fireplace
** Island (C) and Room Divider (D) installation is possible as long as the horizontal portion of the vent system (X) does not exceed
20’ (610cm). See details in Venting Section.
* When you install your fi replace in (D) Room divider or (E) Flat on wall corner positions (Y), a minimum of 6” (152mm) clearance
must be maintained from the perpendicular wall and the front side edge of the fi replace.
A
B
X
A Flat on wall
B **Island
C *Room divider
D *Flat on wall corner
E Chase installation
Y 6” minimum
8
20306743
CLEARANCES
CLEARANCES TO COMBUSTIBLES
KSTDV Series Gas Fireplace
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 flooring, the appliance
WARNING
shall be installed on a metal, wood or
noncombustible material panel ex tend ing
full width and depth of the appliance.
Ceiling
Combustible Mantel
72”
(1829 mm)
Min.
12”
(305 mm)
Max. Depth
12”
16”
Top of Fireplace
Opening
Side View
12”
6”
256O”
10”
Noncombustible
Material to Top of
Standoffs
CFM146d
Stud
Finish Wall
Combustible
Material Area
16”
(406 mm)
Min.
6”
152 mm)
Min.
Figure 4 Ceiling and Side Wall Clearances
Hearth Minimum
Fireplace Opening
Hearth 8” Min.
(203 mm)
Noncombustible
MANTEL CLEARANCES
NOTE: The combustible area above the facing must
not protrude more than 1/2" from the facing. If it does,
it is considered a mantel and must meet the mantel
requirements listed in this manual.
1”
”
4”
5”
Top View
Figure 5 Mantel Clearance
3”
6”
Never obstruct or modify the air inlet or
outlet grilles (louvers). This may create
a fi re hazard.
WARNING
45°
20306743
9
KSTDV Series Gas Fireplace
FIREPLACE INSTALLATION
SECURE FIREPLACE TO FLOOR OR FRAMING
The fi replace must be secured to the fl oor and/or to framing
studs as shown in Figure 6 . Use four (4) wood screws or
masonry/ concrete screws to secure fi replace to the fl oor.
Use four (4) screws to attach fi replace to framing. The side
brackets or nailing fl anges are designed to accommodate
two wall boards thicknesses, 1/2" or 5/8".
A 6" area above fireplace must be a
noncombustible material. Figure 6
NOTE
Never install combustible materials over
front face of fi replace.
NOTE
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 fi re rating of Zero) may be
used to cover the black surface of the appliance. A 300°F
minimum adhesive may be used to attach facing materials
to the black surface. If joints between the fi nished wall
and the fi replace surround are sealed, a 300°F minimum
sealant material (General Electric RTV103 or equivalent)
must be used.
Noncombustible
Material
Framing
FP2545
Figure 6 Secure Fireplace to Floor and Framing Studs
10
Screws
Nailing Flange
20306743
For models purchased after 4/16/15, please see addendum.
VENTING 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
WARNING
serious injury, property damage or loss of
life.
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 fi replace manual and vent
kit instructions.
Only a qualifi ed installer/service person should install the
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 modifi cation of the venting system.
• Installation of any component part not manufactured or
approved by Vermont Castings Group
• Installation other than permitted by these instructions.
KSTDV Series Gas Fireplace
**1”
*3”
**1”
72”
(1829 mm)
Figure 7 Combustible Clearances for Vent Pipe
* 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”
(610 mm)
FP2567
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. Unless the
1
vertical run is 7
⁄2 feet or higher from fl oor
of fi replace, the clearance for horizontal run
is 1" on all sides.
WARNING
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 fl ue is acceptable thereafter.
20306743
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
WARNING
common vent systems.
Failure to follow these instructions will
void the warranty.
NOTICE
11
For models purchased after 4/16/15, please see addendum.
KSTDV Series Gas Fireplace
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 below 7
place. With 7
of the fi replace, the horizontal run may be level. NEVER
run vent piping down.
You may use up to three 90° elbows in this vent confi gura-
tion. Refer to Vertical/Horizontal Termination Confi gurations
on Page 16.
1
⁄2 feet or more of vertical rise from the fl oor
1
⁄2" of vertical rise from fl oor of fi re-
FOR VERTICAL TERMINATION
Measure the distance from the fi replace fl oor to the ceil-
ing. Add the ceiling thickness, the vertical rise in an attic
or second story, and allow for suffi cient 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, fi restops are required at each
fl oor level. If an offset is needed in the attic, additional pipe
and elbows will be required.
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
NOTICE
building codes. You must follow all local
building codes.
VENTING INSTALLATION
Never run the vent pipe down. This may
cause excessive temperatures which could
cause a fi re.
WARNING
You may use a chase with a vent termination with exposed
pipe on the exterior of the house. See 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 fl ue
gas exhaust. Certain limitations apply to vent confi gurations
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.
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
NOTICE
material. Maintain proper clearances to all
combustible materials.
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
WARNING
pack the open air spaces with insulation
or other materials. This could cause high
temperatures and may present a fi re hazard.
*Unless the vertical run is 71⁄2 feet or higher
from fl oor of fi replace, the clearance for the
horizontal run is 1" on all sides.
12
20306743
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
B
INSIDE
CORNER DETAIL
A
G
CFM145a
V
V
V
V
V
V
V
V
For models purchased after 4/16/15, please see addendum.
VENTING INSTALLATION
KSTDV Series Gas Fireplace
TERMINATION LOCATION
Figure 8 –
Termination Locations
1
US INSTALLATIONS
A = Clearance above grade, veranda, porch,
CANADIAN INSTALLATIONS
12" (30cm) 12" (30cm)
deck or balcony
B = Clearance to window or door that may be
opened
C = Clearance to permanently closed window 12" (305mm) recommended to prevent
D = Vertical clearance to ventilated soffi t
6" (15cm) for appliances <10,000 BTU/h
(3kW)
12" (30cm) for appliances >10,000 BTU/h
(3kW) and <100,000 BTU/h (30kW)
36" (91cm) for appliances >100,000 BTU/h
(30kW)
6" (15cm) for appliances <10,000 BTU/h
(3kW)
9" (23cm) for appliances >10,000 BTU/h
(3kW) and <50,000 BTU/h (15kW)
12" (30cm) for appliances >50,000 BTU/h
(15kW)
12" (305mm) recommended to prevent
window condensation
window condensation
18" (458mm) 18" (458mm)
located above the terminal within a horizontal distance of 2' (610 mm) from the
center line of the terminal
E = Clearance to unventilated soffi t 12" (305mm) 12" (305mm)
F = Clearance to outside corner see next page see next page
G = Clearance to inside corner see next page see next page
H = Clearance to each inside of center line
extended above meter/regulator assembly
3' (91cm) within a height of 15' (5m) above
the meter/regulator assembly
3' (91cm) within a height of 15' (5m) above
the meter/regulator assembly
I = Clearance to service regulator vent outlet 3' (91cm) 3' (91cm)
J = Clearance to non-mechanical air supply
inlet to building or the combustion air inlet
to any other appliance
6" (15cm) for appliances <10,000 BTU/h
(3kW)
12" (30cm) for appliances >10,000 BTU/h
(3kW) and <100,000 BTU/h (30kW)
36" (91cm) for appliances >100,000 BTU/h
(30kW)
6" (15cm) for appliances <10,000 BTU/h
(3kW)
9" (23cm) for appliances >10,000 BTU/h
(3kW) and <50,000 BTU/h (15kW)
12" (30cm) for appliances >50,000 BTU/h
(15kW)
K = Clearance to mechanical air supply inlet 6' (1.83m) 3' (91cm) above if within 10' (3m) horizontally
L = Clearance above paved sidewalk or
7' (2.13m)
†
7' (2.13m)
†
paved driveway located on public property
M = Clearance under veranda, porch, deck or
12" (30cm)
‡
12" (30cm)
‡
balcony
2
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 fl oor.
20306743
NOTE: 1. Local codes or regulations may require different
clearances.
2. The special venting system used on Direct Vent
Fireplaces are certifi ed as part of the appliance, with
clearances tested and approved by the listing agency.
3. Vermont Castings Group assumes no responsibility for
the improper performance of the appliance when the venting
system does not meet these requirements.
13
For models purchased after 4/16/15, please see addendum.
KSTDV Series Gas Fireplace
TERMINATION CLEARANCES
Termination clearances for buildings with combustible and non-combustible exteriors.
Inside Corner
G
V
Balcony -
with no side wall
M =
Combustible &
Noncombustible
12" (305 mm)
G =
Combustible
6" (152 mm)
Noncombustible
2" (51 mm)
M
V
Outside Corner
F =
Combustible
6" (152 mm)
V
Noncombustible
2" (51 mm)
F
Balcony -
with perpendicular side wall
M
V
P
Combustible &
Noncombustible
M = 12" (305 mm)
P = 6” (152 mm)
Alcove Applications*
No. of
Caps DMIN.CMAX.
1 3' (914 mm) 2 x D
2 6' (1.8 m) 1 x DACTUAL
3 9' (2.7 m) 2/3 x DACTUAL
4 12' (3.7 m) 1/2 x DACTUAL
DMin. = Number of Termination caps x 3
CMax. = (2 / Number termination caps) x DActual
VENTING INSTALLATION
D
C
O
E = Min. 2” (51 mm) for
non-vinyl sidewalls
Min. 12” (305 mm) for
vinyl sidewalls
O = 8’ (2.4 m) Min.
C
V
E
ACTUAL
*NOTE: Termination in an alcove space (spaces open only on one side
and with an overhang) is permitted with the dimensions specifi ed for
vinyl or non-vinyl siding and soffi ts. 1. There must be a 3' (914 mm) min-
imum between termination caps. 2. All mechanical air intakes within 10'
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 fi re-
place in accordance with same.
Example: If the vertical dimension from the fl oor of the
fi replace is 11' (3.4 m) the horizontal run to the face of
the outer wall must not exceed 16' (4.9 m).
Sidewall Vent Graph showing the relationship between
vertical and horizontal dimensions for a Direct Vent fl ue
system.
(1 m) of a termination cap must be a minimum of 3' (914 mm) below the
termination cap. 3. All gravity air intakes within 3' (914 mm) of a termination cap must be a minimum of 1' (305 mm) below the termination cap.
Dimensions in Feet
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 12 14 16 18 20
eg: A
Vertical Dimension From the Floor of Unit to the
Center of the Horizontal Vent Pipe
Horizontal dimension from the fi nished outside wall to the
center of the pipe on the fi replace
Figure 10 Rear Wall Venting Graph (No Horizontal Elbows)
14
20306743
For models purchased after 4/16/15, please see addendum.
VENTING INSTALLATION
VERTICAL SIDEWALL INSTALLATION
NOTE: Sealant is not required to assemble fi replace
venting. Do not use silicone sealant at the inner fl ue
exhaust connections.
Step 1
Locate vent opening on the wall. It may be necessary to
fi rst position the fi replace and measure to obtain hole lo-
cation. Depending on whether the wall is combustible or
noncombustible, cut opening to size. Figure 1 1 (For com-
bustible walls fi rst frame in opening.)
Combustible Walls: Cut a 10
mm) hole through the exterior wall and frame as shown.
Figure 11
Noncombustible Walls: Hole opening must be 8
mm) in diameter.
Vent Opening for Combustible Walls
1
10
⁄2"
(267 mm) Min.
1
⁄2”H x 101⁄2”W (267 x 267
1
⁄2” (216
KSTDV Series Gas Fireplace
X
Figure 12 Vertical Height
Requirement
X
1
10
⁄2”
(267 mm)
Min.
Fireplace Hearth
Opening for Noncombustible Wall
1
8
⁄2"
(216 mm)
Figure 11 -
Locate vent opening on wall
Fireplace Hearth
Framing Detail
Step 2
Secure fi restop to the inside frame, center in the 10
1
10
⁄2" vent opening.
1
⁄2" x
Step 3
Place fi replace into position. Measure the vertical height
(X) required from the base of the fl ue collars to the center
of the wall opening. Figure 12
Step 4
Using appropriate length of pipe section(s) attach to fi re-
place with three (3) screws. Follow with the installation of
the elbow.
Step 5
Measure the horizontal length requirement fi guring a 1
(32 mm) overlap, i.e. from the elbow to the outside wall
cap. Figure 13
1
⁄4”
Figure 13 Horizontal Length
Requirement
FP1385
Always install horizontal venting on a level
plane.
Step 6
Use appropriate length of pipe sections - telescopic or
fi xed - and install.
Sealing vent pipe and fi restop gaps with high tem-
perature sealant will restrict cold air being drawn in
around fi replace.
Step 7
Guide the vent terminations 5” and 8” collard into their
respective vent pipes. Double check that the vent pipes
overlap the collars by a minimum of 1
the termination to the wall with screws provided and caulk
around the wall plate to weatherproof. As an alternative to
screwing the termination directly to the wall, you may also
use expanding plugs or an approved exterior construction
adhesive.
Support horizontal pipes every 36” (914
mm) with metal pipe straps.
1
⁄4" (32 mm). Secure
20306743
15
For models purchased after 4/16/15, please see addendum.
KSTDV Series Gas Fireplace
VERTICAL/HORIZONTAL TERMINATION
CONFIGURATIONS
Since it is very important that the venting system
maintain its balance between the combustion air intake
and the fl ue gas exhaust, certain limitations as to vent
confi gurations 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
various dimensions allowable. Figure 10
NOTE: 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. Unless the vertical run is 7
1
⁄2 feet
or higher from fl oor of fi replace, the clearance for the
horizontal run is 1" on all sides.
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 fl ush up with outcropped
wall above.
It is best to locate the fi replace 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 fl ue collar of the fi replace (or the top of the
Transition Elbow) to the face of the fi nished outside wall.
• The maximum number of 90° elbows per side wall
installation is three (3). Figure 14
VENTING INSTALLATION
24"
(610 mm)
Min.
Figure 15 Horizontal Run with Minimum Vertical Rise
*NOTE: With a
24" rise, the horizontal run must
be 36".
FP1381
• If a 90° elbow is used in the horizontal vent run (level
height maintained) the horizontal vent length is reduced
by 36". Refer to Figure 16. This does not apply if the 90°
elbows are used to increase or redirect a vertical rise.
Example: According to the vent graph (page 14) the max-
imum horizontal vent length in a system with a 10' vertical
rise is 17
horizontal vent it must be reduced to 14
In Figure 16 dimension A plus B must not be greater than
14
1
⁄2’ (5.3 m) and if a 90° elbow is required in the
1
⁄2' (4.4 m).
90° Elbow = 36" (914 mm)
A
1
⁄2' (4.4 m).
Reduction
B
3 x 90° Elbows
24" Min.
Figure 14 Maximum Three (3) 90° Elbows Per Installation
FP1380
• A minimum of 24" is required before a 90° elbow. If a 90°
elbow is fi tted directly after 24" vertical section mounted
to the top of the fi replace, the horizontal vent run before
the termination must be 36” (914 mm). Figure 15
16
10’
FP2546
Figure 16 Horizontal Run Reduction
20306743
For models purchased after 4/16/15, please see addendum.
VENTING INSTALLATION
• For each 45° elbow installed in the horizontal run, the
length of the horizontal run MUST be reduced by 18"
(457 mm). 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 17
Example: Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total Angular Variation = 270°
1
2
3
4
KSTDV Series Gas Fireplace
supplied). Refi ll hole with 12" of coarse gravel leaving
a clearance of approximately 4" below snorkel. Figure
18
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. Figure 18
Screws
Firestop
Minimum
4" Clearance
Ground
Window
24"
(610 mm)
Minimum
Well
Gravel
24" (610 mm)
Minimum
Figure 17 Maximum Elbow Usage
FP1383
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" (178
mm) below grade level. The 7" (178 mm) 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
fi replace (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
Drain
Foundation
Wall
Figure 18 -
Below Grade Installation
If the foundation is recessed, use recess brackets (not
supplied) for securing lower portion of the snorkel. Fasten
brackets to wall fi rst, then secure to snorkel with self drilling
#8 x 1/2 sheet metal screws. It will be necessary to extend
vent pipes out as far as the protruding wall face. Figure 19
Snorkel
Foundation
Recess
Wall Screws
Watertight Seal
Around Pipe
Figure 19 Snorkel Installation, Recessed Foundation
Sheet Metal
Screws
20306743
17
For models purchased after 4/16/15, please see addendum.
KSTDV Series Gas Fireplace
• Do not back fi ll around snorkel.
• A clearance of at least 4" must be
maintained between the snorkel and
the soil.
WARNING
VERTICAL THROUGH-THE-ROOF
APPLICATIONS
A restrictor disc must be installed on
vertical terminations that are higher than
12' (366 cm).
NOTICE
Install restrictor disc as shown in Figure 20 for vertically
vented applications. Up to two (2) restrictor discs may be
needed for 40' installation. The two (2) restrictor discs
suppled will work for most installations. If a third disc is
needed order part number 56D3027.
Restrictor Disc
Fireplace Collar
40' (12 m) Maximum Height
12' (3.7 m) Minimum Height
A
11
A: Vertical
dimension from
the fl oor to the
center of the
horizontal vent
pipe.
10
9
8
7
VENTING INSTALLATION
B
Support Straps
Every 3'
FP1387a
Figure 20 Install Restrictor Disc into Fireplace Collar
This gas fi replace has been approved for vertical installa-
tions up to 40' (12 m) in height. Up to a 20' (6 m) horizontal
vent run can be installed within the vent system using a
maximum of two 90° elbows. Figure 21
NOTE: 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.
Unless the vertical run is 7
fi replace, the clearance for the horizontal run is 1" on all
sides.
Vertical sections of this vent system require a minimum
of 1" clearance to combustibles on all sides of the pipe.
1
⁄2 feet or higher form fl oor of
• 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"
(457 mm).
6
(Dimensions in feet)
5
10 12 14 16 18 20
B: Length of horizontal pipe section
before vertical elbow.
Example: If the vertical dimension from the fl oor of the
fi replace is 8
must not exceed 16' (4.9 m).
Figure 21 Allowable Horizontal Runs with Vertical Rises and
Terminations
Example: Maximum horizontal length
1
⁄2' (2.6 m), the horizontal run to vertical elbow
No elbows = 10’ (3 m)
1x45° elbows = 8.5’ (2.6 m)
2x45° elbows = 7’ (2.1 m)
• A minimum of an 8' (2.5 m) 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. Figure 22
• The maximum angular variation allowed in the system
is 270°. Figure 22
• For the minimum height of the vent above the highest
point of penetration through the roof refer to Page 20,
Figure 26.
18
20306743
For models purchased after 4/16/15, please see addendum.
VENTING INSTALLATION
1
2
3
4
24" (610 mm) Min.
Example: Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total Angular Variation = 270°
Figure 22 Maximum Elbow Usage
INSTALLATION FOR VERTICAL TERMINATION
1. Determine the route your vertical venting will take. If
ceiling joist, roof rafters or other framing will obstruct
the venting system, consider an offset. Refer to Figure
24 to avoid cutting load bearing members.
Roof Flashing
KSTDV Series Gas Fireplace
For optimal fl ame appearance, a restrictor disk is necessary
on straight vertical runs of 10' of more.
• Runs may not incorporate elbows.
• The disk is part number 56D3027 and is included in
installation manual packet.
• Drop the disk into a 5" inner collar before installing the
fi rst section of fl ue or install at the last section before
installing the termination. Also disk can be installed
from inside the fi rebox into the 5" inner collar.
• An additional disk may be installed on runs of 35' or
more. Rotate disks perpendicular to each other.
NOTE: Pay special attention to these installation instructions
for required clearances (air space) to combustibles when
passing through ceilings, walls, roofs, enclosures, attic
rafters, etc. Do not pack air spaces with insulation. Also
note maximum vertical rise of the venting system and any
maximum horizontal offset limitations. Offsets must fall
within the parameters shown in Figures 24 and 25.
2. Set fi replace in desired location. Drop a line plumb down
from the ceiling to the position of the fl ue exit. Mark the
center point where the vent will penetrate the ceiling.
Drill a small locating hole a this point.
Drop a plumb line from the inside of the roof to the ceiling
locating hole in the ceiling. Mark the center point where
the vent will penetrate the roof. Drill a small locating hole
at this point.
FLAT CEILING INSTALLATION
1. Cut a 10
the locating hole as a center point The opening should
be framed to 10
sions as shown in Figure 25 using framing lumber the
same size as the ceiling joist. If the area above the
ceiling is an insulated ceiling or a room, nail fi restop from
the top side. This prevents loose insulation from falling
into the required clearance space. Figure 23. Otherwise,
install fi restop below the framed hole. Figure 25
1
⁄2" (241 mm) square hole in the ceiling using
1
⁄2"x101⁄2" (267 x 267 mm) inside dimen-
Wall Strap
FP1669
Figure 23 Offset with Wall Strap and 45° Elbows
20306743
Ceiling Firestop
Nails
45° Elbows
Firestop
Figure 24 If Area Above is a Room, Install Firestop above Framed
Hole as Shown
19
For models purchased after 4/16/15, please see addendum.
KSTDV Series Gas Fireplace
10
"
1
2
/
10
Nails
Figure 25 If Area Above is Not a Room, Install Firestop above
Framed Hole as Shown
2. Assemble the desired lengths of pipe and elbows necessary to reach from the burner system fl ue up through
the fi restop. Be sure pipe and elbow connections are
fully twist-locked.
3. Cut a hole in the roof using the locating hole as a center
point. (Cover any exposed open vent pipes before
cutting hole in roof). The 10
hole must be measured on the horizontal. Actual length
may be larger depending on the pitch of the roof. There
must be a 1" minimum clearance from the vent pipe to
combustible materials. (Insulation should be considered
a combustible material).
Horizontal Overhang
1
/
2
"
FP1970
Firestop
1
⁄2"x101⁄2" (267 x 267 mm)
VENTING INSTALLATION
4. Connect a section of pipe and extend up through the
hole.
NOTE: If an of
fset is needed to avoid obstructions, you
must support the vent pipe every three (3) feet. Use wall
straps for this purpose. Page 18, Figure 21. Whenever
possible, use 45° elbows instead of 90° elbows. The 45°
elbow offers less restriction to the fl ow of the fl ue gases
and intake air.
5. Place the fl ashing over the pipe section(s) extending
through the roof. Secure the base of the fl ashing to
the roof and framing with roofi ng nails. Be sure roofi ng
material overlaps the top edge of the fl ashing. There
must be a 1" clearance from the vent pipe to combustible
materials.
6. Continue to add pipe sections until the height of the vent
cap meets the minimum building code requirements as
shown in Figure 26.
NOTE: You must increase vent height for steep roof
pitches. Nearby trees, adjoining roof lines, steep pitched
roofs, and other similar factors may cause poor draft or
down-drafting in high winds. Increasing the vent height
may solve this problem.
NOTE: If the vent pipe passes through any occupied areas
above the fi rst fl oor, including storage spaces and closets,
you must enclose pipe. You may frame and sheetrock the
enclosure with standard construction material. Make sure
to meet the minimum allowable clearances to combustibles.
Do not fi ll any of the required clearance spaces with
insulation.
TERMINATION HEIGHT FOR VENTS ABOVE
FLAT OR SLOPED ROOFS
2 ft.
Min.
Termination
Vent
Storm Collar
Flashing
Concentric
Vent Pipe
Figure 26 Minimum Chimney Clearance
2 ft. Min.
Lowest
Discharge
Opening
H*
1" Minimum
Clearances to
Combustibles
20
Vertical Wall
12
X
FP1971
Roof Pitch H (feet)
Flat to 6/12 1.0
Over 6/12 to 7/12 1.25
Over 7/12 to 8/12 1.5
Over 8/12 to 9/12 2.0
Over 9/12 to 10/12 2.5
Over 10/12 to 11/12 3.25
Over 11/12 to 12/12 4.0
*H - Minimum height from roof to
lowest discharge opening of vent
20306743
GAS PIPE INSTALLATION
CHECK GAS TYPE
Use proper gas type for the fi replace you are installing.
If you have confl icting gas type, do not install fi replace.
See dealer where you purchased the fi replace for proper
fi replace according to your gas type.
A qualifi ed installer or service person must
connect appliance to gas supply. Follow
all local codes.
WARNING
INSTALLATION ITEMS NEEDED
Before installing fi replace and burner system, make sure
you have the items listed below.
• External regulator • Tee joint
• Test gauge connection* • Pipe wrench
• Sediment trap (recommended)
• Equipment shutoff valve*
• Piping (check local codes)
• Sealant (resistant to propane/LP gas) (supplied by
installer)
• approved fl exible gas line with gas connector (if
allowed by local codes — not provided)
* A CSA design-certifi ed equipment shutoff valve with
1/8" NPT tap is an acceptable alternative to test gauge
connection. Purchase the CSA design-certifi ed equip-
ment shutoff valve from your dealer.
For propane/LP connections only, the installer must supply
an external regulator. The external regulator will reduce
incoming gas pressure. You must reduce incoming gas
pressure to between 11 and 13 inches of water. If you do
not reduce incoming gas pressure, burner system regulator
damage could occur. Install external regulator with the vent
pointing down as shown in Figure 27. Pointing the vent
down protects it from freezing rain or sleet.
Use only new black iron or steel pipe.
Internally tinned copper or copper tubing
can be used per National Fuel Code, Section
2.6.3, providing gas meets hydrogen sulfi de
limits, and where permitted by local codes.
Gas piping system must be sized to provide
minimum inlet pressure (listed on data plate)
CAUTION
at the maximum fl ow rate (BTU/hr). Undue
pressure loss will occur if the pipe is too
small.
KSTDV Series Gas Fireplace
100 gal. (min)
External
Regulator
Figure 27 External Regulator with Vent Pointing Down (Propane/LP
Only)
Propane/LP
Supply Tank
Vent Pointing
Down
FP1977
For propane/LP units, never connect
fi replace directly to the propane/LP supply .
This burner system requires an external
regulator (not supplied). Install the external
regulator between the burner system and
CAUTION
propane/LP supply.
External regulators may be necessary for
natural gas. One- or two-pound systems
will damage this appliance and may cause
fi re hazard.
WARNING
When using copper or fl ex connectors use only fi ttings
approved for gas connections. The gas control inlet is
3/8" NPT.
20306743
21
KSTDV Series Gas Fireplace
Only persons licensed to work with gas
piping may make the necessary gas
connections to this appliance.
WARNING
INSTALL GAS SUPPLY LINE
NOTE : The gas line connection may be made using 1/2"
rigid tubing or an approved fl ex connector. Since some
municipalities have additional local codes it is always best
to consult your local authorities and the current edition of
the National Fuel Gas Code ANSI.Z223.1, NFPA54. In
Canada CSA-B149 (1 or 2) Installation Code.
A listed manual shutoff valve must be installed upstream of
the appliance. Union tee and plugged 1/8" NPT pressure
tapping point should be installed upstream of the appliance.
Figure 28
IMPORTANT: Install main gas valve (equipment shutoff
valve) in an accessible location. The main gas valve is for
turning on or shutting off the gas to the fi replace.
Check your building codes for any special requirements for
locating equipment shutoff valve to fi replaces.
GAS PIPE INSTALLATION
Apply pipe joint sealant lightly to male threads. This will
prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged burner system valves.
We recommend that you install a sediment trap/drip leg in
supply line as shown in Figure 28. Locate sediment trap/
drip leg where it is within reach for cleaning. Install in piping
system between fuel supply and burner system. Locate
sediment trap/drip leg where trapped matter is not likely to
freeze. A sediment trap traps moisture and contaminants.
This keeps them from going into the burner system gas controls. If sediment trap/drip leg is not installed or is installed
wrong, burner system may not run properly.
A manual shutoff valve must be installed
upstream of the appliance. Union tee
and plugged 1/8" NPT pressure tapping
point should be installed upstream of the
CAUTION
appliance. Figure 28
Use pipe joint sealant that is resistant to
liquid petroleum (LP) gas.
Natural Gas
From Gas Meter
(4.0" w.c. to 10.5" w.c. Pressure)
Propane/LP
From External Regulator
(11" w.c. to 13" w.c. Pressure)
Approved Flexible
Gas Line
Sediment Trap/Drip Leg
CAUTION
CSA Design-Certifi ed Equipment Shutoff Valve
with 1/8" NPT Tap*
Tee Joint
Pipe Nipple
3" Minimum
Cap
Figure 28 Gas Connection
22
20306743
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