Vermont Casting 2822, 2828, 2827, 2825, 2823 User Manual
...
INSTALLER / CONSUMER
SAFETY INFORMATION
PLEASE READ THIS MANUAL
BEFORE INSTALLING AND USING
APPLIANCE.
Jefferson®
WARNING!
IF THE INFORMATION IN THIS
MANUAL IS NOT FOLLOWED
EXACTLY, A FIRE OR EXPLOSION
MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
FOR YOUR SAFETY
Installation and service must be performed by a qualified installer, service
agency or the gas suppler.
WHA T T O DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electric switch; do
not use any phone in your building.
• Immediately call your gas supplier
form your neighbor’s phone. Follow
the gas supplier’s instructions.
• If you cannot reach your gas supplier,
call the fire department.
Direct Vent/Natural
Vent Gas Heater
Model JDV: 2820, 2822, 2823,
2825, 2827, 2828
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE
VAPORS AND LIQUIDS IN THE
VICINITY OF THIS OR ANY OTHER
APPLIANCE.
This appliance may be installed in an after
market permanently located manufactured (mobile) home where not prohibited
by local codes.
This appliance is only for use with the
type of gas indicated on the rating plate.
This appliance is not convertible for use
with other gases unless a certified kit is
used.
INSTALLER: DO NOT DISCARD THIS MANUAL - LEAVE FOR HOMEOWNER
Homeowner’s Installation
and Operation Manual
I
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Tested and listed to
ANSI Z21.88b-2001 and CSA-2.33b-2001
Vermont Castings, Majestic Products
410 Admiral Blvd. • Mississauga, Ontario, Canada L5T 2N6 • 905-670-7777
www.majesticproducts.com • www.vermontcastings.com
CERTIFIED
20002191 11/02 Rev. 10
Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater
Table Of Contents
PLEASE READ THE INSTALLATION & OPERATING INSTRUCTIONS BEFORE USING APPLIANCE.
Thank you and congratulations on your purchase of a Vermont Castings stove.
IMPORTANT: Read all instructions and warnings carefully before starting installation. Failure to follow these
instructions may result in a possible fire hazard and will void the warranty.
Installation & Operating Instructions ........................................................................................................... 3
Stove Dimensions ............................................................................................................................. 4
Installation Requirements.................................................................................................................. 5
Locating the Stove ............................................................................................................................ 5
Clearance Requirements .................................................................................................................. 5
Parallel Installation ............................................................................................................................ 6
Corner Installation ............................................................................................................................. 6
Wall and Ceiling Clearances ............................................................................................................. 6
Hearth Requirements ........................................................................................................................ 6
Gas Specifications ............................................................................................................................ 7
Gas Inlet and Manifold Pressures ..................................................................................................... 7
High Elevations ................................................................................................................................. 7
Horizontal Termination - Direct Vent ONLY ...................................................................................... 7
Vertical Termination - Direct Vent ONLY .......................................................................................... 8
Vent Termination Clearances - Direct Vent Only .............................................................................. 9
General Venting Information - Termination Location ...................................................................... 10
Termination Clearances .................................................................................................................. 11
Venting Requirements - Natural Vent ONLY................................................................................... 11
Venting Requirements and Options - Direct Vent ONLY ................................................................ 12
Assembly Procedures
Tools Required ................................................................................................................................ 13
Unpack the Stove ............................................................................................................................ 13
Install Optional Fan ......................................................................................................................... 13
Venting System Assembly - Direct Vent ......................................................................................... 14
Install Vent Adapter Pipe (CFM Components) ................................................................................ 14
Install Vent Adapter Pipe (Simpson Dura-Vent Components) ........................................................ 15
Side Wall Termination Assembly .................................................................................................... 16
Vent Termination Below Grade ....................................................................................................... 17
Vertical (Through the Roof) Vent Assembly .................................................................................... 18
Venting System Assembly - Natural Vent ....................................................................................... 19
Install the Vent Pipe ........................................................................................................................ 19
Install the Log Set ........................................................................................................................... 20
Connect Gas Supply Line ............................................................................................................... 21
Burner Information .......................................................................................................................... 21
Air Shutter Adjustment .................................................................................................................... 21
Complete the Assembly .................................................................................................................. 23
Install ON/OFF Switch..................................................................................................................... 23
Install the Stove Front ..................................................................................................................... 23
Thermostat Connection (Optional) .................................................................................................. 24
Operation
Your First Fire.................................................................................................................................. 25
Pilot and Burner Inspection ............................................................................................................. 25
Flame & Temperature Adjustment ..................................................................................................25
Flame Characteristics...................................................................................................................... 25
Lighting and Operating Instructions ................................................................................................ 26
Troubleshooting - Honeywell #8420 Gas Control System .............................................................. 27
Fuel Conversion Instructions........................................................................................................... 28
Maintenance
Annual System Inspection............................................................................................................... 30
Logset and Burner/Cleaning and Inspection ................................................................................... 30
Care of Cast Iron ............................................................................................................................. 30
Cleaning the Glass .......................................................................................................................... 30
Glass Replacement ......................................................................................................................... 30
Gasket Replacement....................................................................................................................... 31
Inspect the Vent System Annually .................................................................................................. 31
Check the Gas Flame Regularly ..................................................................................................... 31
Stove Dissasembly.......................................................................................................................... 31
Wiring Diagrams.............................................................................................................................. 32
Replacement Parts.......................................................................................................................... 33
Optional Accessories................................................................................................................................... 35
Warranty ........................................................................................................................................................ 36
22
20002191
Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater
Installation & Operating Instructions
The Jefferson Direct Vent/Natural Vent Room Heater,
Model Nos. 2820, 2822, 2823, 2825, 2827 and 2828, is a
vented gas appliance listed to the ANSI Standard Z21.88b2001 and CSA-2.33b-2001 for Vented Room Heaters, and
CSA 2.17-M91, Gas-Fired Appliances For Use at High Altitudes.
The installation of the Jefferson Direct V ent/Natural Vent
Room Heater must conform with local codes, or in the absence of local codes, with National Fuel Gas Code, ANSI
Z223.1 — latest edition and CSA B-149.1 Installation Code.
(EXCEPTION: Do not derate this appliance for altitude.
Maintain the manifold pressure at 3.5 inches w.c. for Natural Gas and 10 inches w.c. for LP gas at maximum input.)
This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible
for use with other gases unless a certified kit is used.
Installation and replacement of gas piping, gas
utilization equipment or accessories, and repair and
servicing of equipment shall be performed only by a
qualified agency. The term “qualified agency” means
any individual, firm, corporation, or company that either
in person or through a representative is engaged in
and is responsible for (a) installation or replacement of
gas piping, or (b), the connection, installation, repair,
or servicing of equipment, who is experienced in such
work, familiar with all precautions required, and has
complied with all the requirements of the authority
having jurisdiction.
The Jefferson Direct Vent/Natural Vent Room Heater
should be inspected before use and at least annually
by a qualified service agency. It is imperative that
control compartments, burners, and circulating air
passageways of the appliance be kept clean.
The Jefferson Direct Vent/Natural Vent Room Heater
and its individual shut-off valve must be disconnected from
the gas supply piping during any pressure testing of that
system at test pressures in excess of 1/2 psig (3.5 kPa).
The Jefferson Direct Vent/Natural Vent Room Heater
must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure
testing of the gas supply piping system at test pressures
equal to or less than 1/2 psig.
'Direct Vent' describes a sealed combustion system in
which incoming outside air for combustion and outgoing
exhaust enter and exit through two separate concentric
passages within the same sealed vent system. The system does not use room air to support combustion. The
Direct Vent system permits the gas appliance to be vented
directly to the outside atmosphere through the side of the
house or vertically through the roof. Conventional venting
systems (Natural Vent) take air from the room for combustion and vent the exhaust vertically through the roof to the
atmosphere.
This appliance is approved for bedroom installations in
the U.S. and Canada.
This appliance may be installed in an aftermarket*
manufactured (mobile) home, where not prohibited by
state or local codes.
WARNING: Operation of this heater when not connected to a properly installed and maintained venting
system can result in carbon monoxide (CO) poisoning
and possible death.
The Jefferson Direct Vent/Natural Vent Room Heater,
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, (latest edition), or
of the current Canadian Electrical Code C22.1.
Due to high temperatures this appliance should be
located out of traffic and away from furniture and
draperies.
WARNING: This appliance is hot while in operation.
Keep children, clothing, and furniture away. Contact
may cause burns or ignition of combustible materials.
Children and adults should be alerted to the hazards
of high surface temperatures and should stay away to
avoid burns or clothing ignition. Young children should
be carefully supervised when they are in the same
room as the appliance.
Clothing or other flammable materials should not be
placed on or near the appliance.
Any safety screen, glass or guard removed for
servicing an appliance must be replaced prior to
operating the appliance.
The appliance area must be kept clear and free from
combustible materials, gasoline, and other flammable
vapors and liquids.
The flow of combustion and ventilation air must not
be obstructed. The installation must include adequate
accessibility and clearance for servicing and proper
operation.
WARNING: Do not operate the Room Heater with the
glass panel removed, cracked or broken. Replacement
of the panel should be done by a licensed or qualified
service person.
Do not use this appliance if any part has been under
water. Immediately call a qualified service technician
to inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.
Do not burn wood, trash or any other material for
which this appliance was not designed. This appliance
is designed to burn either natural gas or propane only.
This gas appliance must not be connected to a chimney
flue serving a separate solid-fuel burning appliance.
CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper and dangerous operation.
Verify proper operation after servicing.
Proposition 65 Warning: Fuels used in gas,
woodburning or oil fired appliances, and the products of
combustion of such fuels, contain chemicals known to the
State of California to cause cancer, birth defects and other
reproductive harm.
California Health & Safety Code Sec. 25249.6
* Aftermarket: Completion of sale, nor for purpose of resale,
from the manufacturer.
20002191
3
Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater
Jefferson Direct Vent/ Natural Vent Stove Dimensions
28¹⁄₂"
C
L
Valve
3"
Inlet
24"
14¹⁄₂"
8"
Fig. 1 Jefferson dimensions.
See Page 6 for Flue Collar
Centerline Dimensions.
ST206
Attention
The Jefferson stove is shipped from the factory as a Direct Vent Gas Heater. This heater may be converted
into a Natural Vent unit in the field. If a Natural Vent heater is desired, the Vermont Castings Z31D00
FSDHAG Draft Hood must be directly installed to the top of the unit according to the installation
instructions. The Draft Hood Adapter is available in the 7FSKHASK stove kit or as a separate item.
When the Jefferson stove is converted to Natural Vent, it uses 4” vent pipe. For aesthetic purposes the CFM
direct vent system may be used up to the ceiling.
44
20002191
Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater
Installation Requirements
The installation must conform with local codes or, in the
absence of local codes, with the National Fuel Gas
Code, ANSI Z223.1 - latest edition. (EXCEPTION: Do
not derate this appliance for altitude. Maintain the
manifold pressure at 3.5 inches w.c. for Natural Gas,
and 10 inches w.c. for Propane).
In Canada, installation must be in accordance with the
current CSA B-149.1 Installation Codes and/or local
codes.
Direct Vent System Only
A
D
B
C
The installation should be done by a qualified service person who is familiar with the building codes
and installation techniques appropriate for your area
to accomplish a safe and effective installation.
Your dealer or your local gas supplier will be able to
refer a qualified service person.
WARNING: Due to high temperatures, the HEATER
should be located out of traffic and away from furniture
and draperies.
The surface of the Heater Is hot when it is in use.
Young children should be watched carefully when
they are in the same room when the Heater is in use,
and they should be taught to avoid the hot surface.
Keep any objects that can burn well away from the
Heater, and observe the recommended clearances
that follow.
Locating the Stove
In choosing a location for the stove, consider:
• The location of outside walls;
• Where additional heat is needed:
• Where family members gather most often;
• The vent system requirements.
NOTE: We do not recommend the use of wallpaper next
to this stove. Over time, radiant heat may cause the
wallpaper to shrink, or may adversely affect the binders
in the wallpaper adhesive.
E
A. Flat on corner wall
B. Room Divider
C. Island
Fig. 2 Possible stove locations.
D. Cross Corner
E. Flat on wall
ST207
Clearance Requirements
Minimum Clearances to Combustible Materials
Measure side clearances as shown in Figures 3 and 4
from the outer edge of the cast iron stove top. Measure
rear clearances from the outermost surface of the steel
rear skirt.
The Jefferson heater is approved for installation into an
alcove constructed of combustible materials to the
dimensions and clearances shown on the next page.
The same clearances apply in a standard parallel installation.
WARNING:
• Always maintain required
clearances (air spaces) to nearby combustibles
to prevent fire hazard. Do not fill air spaces with
insulation. All venting components must
maintain a 1" (25mm) clearance to combustible
materials. Maintain a 6” (150mm) clearance
when using single wall pipe.
• The gas appliance and vent system must be
vented directly to the outside of the building and
never be attached to a chimney serving a
separate solid fuel or gas-burning appliance.
• Refer to the manufacturer's instructions
included with the venting system for complete
installation procedures.
20002191
5
Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater
Parallel Installation:
Minimum Clearance and Flue Centerline,
Direct Vent and Natural Vent
C
L
C
D
C
L
B
Stove Clearances A: 4” (102mm)
B: 4” (102mm)
Pipe Centerlines C: 14¹⁄₂” (369mm)
D: 9” (229mm)
Fig. 3 Parallel installation, minimum back and side clearances,
and flue centerlines.
A
ST128a
Wall Thimble Centerline from Floor
Direct Vent Only
A
ST131a
A
Effective Minimum
Wall Thimble 58 ¹/₄” (1480mm)(CFM Majestic Pipe)
Centerline 54¹⁄₄” (1378mm) (Simpson DuraVent Pipe)
Fig. 5 Minimum wall thimble centerline.
Wall and Ceiling Clearances
Corner Installation: Minimum Clearance and
Flue Centerline, Direct Vent & Natural Vent
B
A
B
A
Stove Clearance A: 4” (102mm)
Pipe Centerline B: 14³⁄₄” (375mm)
Fig. 4 Corner installation, minimum corner clearances and flue
centerline.
ST129b
Direct Vent Only
B
C
A: Rear Wall 4” (102mm)
B: Min. Clearance 43¹⁄₂” (1105mm)*
C: Min. Alcove Height 72” (1830mm)*
D: Max. Alcove Depth 48” (1220mm)
Sidewall Clearance 4” (102mm)
*
needed for installing DuraVent Minimum Vent Kit #2792 or
CFM/Majestic Minimum Vent Kit #7TFSDVSK.
Fig. 6 Dimensions and clearances to ceiling or alcove.
D
A
ST101a
Hearth Requirements
The Jefferson Heater must be installed on rigid flooring.
When the heater is installed directly on any combustible
surface other than wood flooring, a metal or wood panel
extending the full width and depth of the unit must be
used as the hearth. There are no other hearth requirements.
66
20002191
Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater
Gas Specifications
Max. Min.
Input Input
Model Fuel Gas Control BTU/h BTU/h
JDVRN Nat Millivolt 28,000 20,000
JDVRP Prop Millivolt 28,000 19,000
Weight: Fully assembled; 350 lbs.
Gas Inlet and Manifold Pressures
Natural LP (Propane)
Inlet Minimum 5.5” w.c. 11.0” w.c.
Inlet Maximum 14.0” w.c. 14.0” w.c.
Manifold Pressure 3.5” w.c. 10.0” w.c.
Jefferson Direct Vent/Natural Vent
Certified to:
ANSI Z21.88b-2001 / CSA 2.33b-2001
Vented Gas Fireplace Heaters
The installation of your Vermont Castings stove must
conform with local codes, or in the absence of local
codes, with the National Fuel Gas Code ANSI
Z223.1 - latest edition, or CSA B149.1 Installation
code. (EXCEPTION: Do not derate this appliance for
altitude up to 4,500 feet (1,370m). Maintain the
manifold pressure at 3.5” w.c. for Natural Gas and
10.0” w.c. for LP Gas.
High Elevations
Input ratings are shown in BTU per hour and are
certified without deration for elevations up to
4,500 feet (1,370m) above sea level.
For elevations above 4,500 feet (1,370m) in USA,
installations must be in accordance with the
current ANSI Z223.1 and/or local codes having
jurisdiction.
In Canada, please consult provincial and/or local
authorities having jurisdiction for installations at
elevations above 4,500 feet (1,370m).
WARNING: Improper installation, adjustment, alteration, service or maintenance can
cause injury or property damage. Refer to
this manual for correct installation and
operational procedures. For assistance or
additional information consult a qualified
installer, service agency, or the gas supplier.
Horizontal Termination -
Direct Vent ONLY
The vent must rise vertically a minimum of 24” (610mm)
off the top of the unit, before the first elbow. The horizontal run may extend up to 20’ (6m) and include a vertical
rise of up to 40’ (12m). (Fig. 7) Horizontal termination
must also meet the criteria shown in Figures 10 through 12.
• Approved vent systems must terminate above and
including the heavy line in Figure 7.
• Two 45˚ elbows may be substituted for each single
90˚ elbow.
• With a rise between 2' - 6', one 90˚ or two 45˚ elbows
may be used.
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
Vertical Run (in feet)
18
16
15
14
13
(Measured from the appliance flue collar to the top of the vent pipe.)
12
11
10
9
8
7
6
5
4
One 90°
Elbow
3
2
1
0
12 3456789101112 13 14 15 16 17 18 19 20
Fig. 7 Horizontal vent termination window.
May use up to
three 90° Elbows
Unacceptable
Venting Configuration
Horizontal Run (in feet)
ST134a
20002191
7
Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater
Vertical Termination - Direct Vent ONLY
A vertical vent system must terminate no less than 8'
(2.44m) and no more than 40’ (12m) above the appliance flue collar. A 2¹⁄₄" restrictor plate (supplied) must be
used, where specified, in all vertically terminated vent
systems. (Refer to Figure 8) NOTE: The restrictor plate
supplied with the vertical termination should be
discarded. Install restrictor plate supplied with the
stove directly at stove outlet. A vertically terminated
vent system must also conform to the following criteria:
• No more than two 90˚ elbows may be used.
•Two 45˚ elbows may be substituted for one 90˚ elbow.
No more than six elbows may be used.
•Vent must rise a minimum of 2 feet before offset is used.
•Termination height must conform to roof clearance as
specified in Figure 9.
40
39
ALL VERTICAL
38
TERMINATIONS
37
REQUIRE USE
36
35
OF THE 2¹⁄₄”
34
RESTRICTOR
33
PLATE*
32
31
30
29
28
27
26
25
Vertical terminations
24
must be within this area
23
22
21
Vertical Run (in feet)
20
19
18
16
(Measure from the appliance flue collar to the top of the vent pipe.)
15
14
13
12
11
No Restrictor Plate
10
9
8
7
6
5
4
3
2
1
0
1 2345678910111213141516171819
Horizontal Run (in feet)
Fig. 8 Vertical vent termination window.
*The Restictor Plate is used on Direct Vent
installations only.
Unacceptable
Venting Configuration
20
ST132a
Vent Termination Clearances
When planning the installation, consider the location of
the vent terminal and clearances. Some of the most
common clearances to keep in mind are shown in Figure
10.
Important: All vent clearances must be maintained.
Check your vent termination clearances against
Figures 10 and 11.
The vent should be placed so that people cannot be
burned by accidentally touching the vent surfaces when
the stove is operating.
The vent termination should be located where it cannot
be damaged by such things as automobile doors, lawn
mowers or snowblowers and it should be located away
from areas where it could become blocked by snow, etc.
Some considerations are:
• Obstructions or impediments to venting.
• Nearby combustible materials that could come into
contact with combustion exhaust gases.
• Other nearby openings {within 9" (230mm)} through
which exhaust gas could reenter the building.
• All vegetation within 3' (.9m) that may interfere with
the draft.
Other factors that influence where the installation will be
sited include the location of outside walls, where additional heat may be desired in the home, where the family
members gather most regularly, and perhaps most
importantly, the distance limitations of the venting
system.
IMPORTANT
Direct Vent Only
• The horizontal termination must not be recessed
into the exterior wall or siding.
• Horizontal vent runs must be level toward the vent
termination.
• Clearances around the vent termination must be
maintained.
• For installations using Simpson DuraVent pipe,
parallel installations with minimum wall clearance
have restricted access for connecting the Horizontal Vent Cap straps to the vent pipe. See the
maker’s instructions for recommended installation
procedures.
88
20002191
Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater
Vent Termination Clearances - Direct Vent ONLY
Your stove is approved to be vented either through the
side wall, or vertical through the roof.
• Vermont Castings, Majestic Products does not
require any opening for inspection of vent pipe.
• Only Vermont Castings, Majestic Products and
Simpson DuraVent venting components specifically approved and labelled for this stove may be
used.
• Minimum clearances between vent pipes and
combustible materials is one (1") inch (25 mm),
except where stated otherwise.
• Venting terminals shall not be recessed into a wall or
siding.
• Horizontal venting must be installed on a level plane
without an inclining or declining slope.
There must not be any obstruction such as bushes,
garden sheds, fences, decks or utility buildings within
24" from the front of the termination hood.
Do not locate termination hood where excessive snow
or ice build up may occur. Be sure to check vent termination area after snow falls, and clear to prevent
accidental blockage of venting system. When using
snow blowers, make sure snow is not directed towards
vent termination area.
Location of Vent Termination
It is imperative the vent termination be located observing the minimum clearances as shown in Figure 9.
20002191
9
Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater
General Venting Information - Termination Location
INSIDE
CORNER DETAIL
G
V
D
E
V
A
H
N
N
CFM145a
B
V
L
VENT TERMINATION AIR SUPPLY INLET
V
C
Fixed
Fixed
V
Closed
Closed
F
Operable
V
B
B
V
Operable
B
X
B
Fixed
Closed
V
A
V
B
X
J
AREA WHERE TERMINAL IS NOT PERMITTED
Canadian Installations
G
V
M
I
1
K
V
US Installations
G
X
V
A
2
A = Clearance above grade, veranda, porch, 12 inches (30cm) 12 inches (30cm)
deck, or balcony
B = Clearance to window or door that may be 6 in (15cm) for appliances 6 in (15cm) for appliances
opened < 10,000Btuh (3kW), 12 in (30cm) < 10,000 Btuh (3kW), 9 in
for appliances > 10,000 Btuh (3kW) and (23cm) for appliances > 10,000
< 100,000 Btuh (30kW), 36 inches (91cm) Btuh (3kW) and < 50,000 Btuh
for appliances > 100,000 Btuh (30kW) (15kW), 12 in (30cm) for
appliances > 50,000 Btuh (15kW)
C = Clearance to permanently closed window 12” (305mm) recommended to 12” (305mm) recommended to
prevent window condensation prevent window condensation
D = Vertical clearance to ventilated soffit located
above the terminal within a horizontal 18” (458mm) 18” (458mm)
distance of 2 feet (610mm) from the center
line of the terminal
E = Clearance to unventilated soffit 12” (305mm) 12” (305mm)
F = Clearance to outside corner see next page see next page
G = Clearance to inside corner (see next page) see next page see next page
H = Clearance to each inside of center line 3 feet (91cm) within a height of 15 feet 3 ft (91cm) within a height of 15 ft
extended above meter/regulator assembly above the meter/regulator assembly above the meter/regulator assy
I = Clearance to service regulator vent outlet 3 feet (91cm) 3 feet (91cm)
J = Clearance to nonmechanical air supply inlet 6 inches (15cm) for appliances < 10,000 6 inches (15cm) for appliances
to building or the combustion air inlet to any Btuh (3kW), 12 inches (30cm) for < 10,000 Btuh (3kW), 9 inches
other appliances appliances > 10,000 Btuh (3kW) and < (23cm) for appliances > 10,000
100,000 Btuh (30kW), 36 inches (91cm) Btuh (3kW) and < 50,000 Btuh
for appliances > 100,000 Btuh (30kW) (15kW), 12 inches (30cm) for
appliances > 50,000 Btuh (15kW)
K = Clearance to a mechanical air supply inlet 6 feet (1.83m) 3 feet (91cm) above if within 10
feet (3m) horizontally
L = Clearance above paved sidewalk or paved 7 feet (2.13m)† 7 feet (2.13m)†
driveway located on public property
M = Clearance under veranda, porch, deck or 12 inches (30cm)c 12 inches (30cm)†
balcony
N = Clearance above a roof shall extend a minimum of 24” (610mm) above the highest point when it passes through the roof
surface, and any other obstruction within a horizontal distance of 18” (450mm).
1 In accordance with the current CSA-B149 Installation Codes
2 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Codes
† A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves
both dwellings
‡ only permitted if veranda, porch, deck or balcony is fully open on a minimum 2 sides beneath the floor:
NOTE: 1. Local codes or regulations may require different clearances.
2. The special venting system used on Vermont Castings Direct Vent Stoves are certified as part of the appliance, with clearances
tested and approved by the listing agency.
Fig. 9 Vent termination clearances.
1010
20002191
Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater
Outside Corner
Inside Corner
Termination Clearances
Termination clearances for buildings with combustible and noncombustible exteriors.
A =
Combustible
6"(152mm)
Noncombustible
2"(50mm)
B =
Combustible
6"(152mm)
Noncombustible
2"(50mm)
A
Balcony with no side wall
G =
Combustible&
Noncombustible
12"(305mm)
G
Balcony with perpendicular side wall
H = 24"(610mm)
J = 20"(508mm)
H
J
B
Recessed Location
C = Maximum depth of 48"
(1219mm) for recessed
location.
D = Minimum width for back wall
of a recessed location.
Combustible 38"(965mm)
Noncombustible 24"(610mm)
E = Clearance from corner in
recessed location.
Combustible 6"(152mm)
Noncombustible 2"(50mm)
C
D
C
E
V
V
Combustible &
Noncombustible
V
V
V
Fig. 10 Termination clearances.
Fig. 11 Vent termination window - Natural Vent ONLY.
20002191
36
34
32
30
28
26
24
22
20
18
top of vent cap.)
16
Vertical Run (in feet)
14
(Measured from floor of unit to
12
10
8
Venting Requirements - Natural Vent Only
A
B
16 18 20 22 24 26 28 30 32 34 36 4 6 8 10 12 14
Horizontal Run (in feet)
NOTE: When using the FSDHAG, the restrictor plate
supplied with the stove is not used.
Venting Runs
= Acceptable venting configuration
= Unacceptable venting configuration
A: Vertical installations up to 36 feet (12m) in
height. Up to an 18 ft. horizontal vent run can be
installed within the vent system using a
maximum of two 90-degree elbows or four
45-degree elbows.
B: Vertical installations up to 36 feet (12m) in
height. Up to a 24 ft. horizontal vent run can be
installed within the vent system using a
maximum of two 45-degree elbows.
(Ratio = 2/3, Hor./Vert.)
584-14
FP567b
11
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