INSTALLER / CONSUMER
CERT IF IED
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SAFETY INFORMATION
PLEASE READ THIS MANUAL
BEFORE INSTALLING AND USING
APPLIANCE.
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.
Jefferson
Direct Vent/Natural Vent
Gas Heater
FOR YOUR SAFETY
Installation and service must be
performed by a qualified installer,
service agency or the gas suppler.
WHAT TO 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
from your neighbor’s phone. Follow
the gas supplier’s instructions.
• If you cannot reach your gas supplier,
call the fire department.
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.
Model: JDVBRN
Homeowner’s Installation
and Operating Manual
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: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
30004177 2/08 Rev. 1
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 CFM Corporation 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 & General Information, Cautions, Warnings ....................................................................3
Operating Instructions Installation Requirements for the Commonwealth of Massachusetts ..........................4
Stove Dimensions .......................................................................................................
Installation Requirements ...........................................................................................
Locating the Stove ......................................................................................................
Clearance Requirements ............................................................................................
Parallel Installation ......................................................................................................
Corner Installation .......................................................................................................
Wall and Ceiling Clearances .......................................................................................
Hearth Requirements ..................................................................................................
Gas Specifications ......................................................................................................
Gas Inlet and Manifold Pressures ...............................................................................
High Elevations ...........................................................................................................
Horizontal Termination - Direct Vent ONLY .................................................................
Vertical Termination - Direct Vent ONLY .....................................................................
Vent Termination Clearances ......................................................................................
General Venting Information - Termination Location ................................................. 11
Termination Clearances ............................................................................................
Venting Requirements - Natural Vent ONLY .............................................................
Venting Requirements and Options - Direct Vent ONLY ...........................................
Assembly Procedures Tools Required ..........................................................................................................
Unpack the Stove ......................................................................................................
Install Optional Fan ...................................................................................................
Venting System Assembly - Direct Vent ....................................................................
Install Vent Adapter Pipe (CFM Corporation Components) ......................................
Install Vent Adapter Pipe (Simpson Dura-Vent Components) ...................................
Side Wall Termination Assembly ...............................................................................
Vent Termination Below Grade .................................................................................
Vertical (Through the Roof) Vent Assembly ..............................................................
Venting System Assembly - Natural Vent .................................................................
Install the Vent Pipe ..................................................................................................
Install Log Set ...........................................................................................................
Connect Gas Supply Line .........................................................................................
Air Shutter Adjustment ...............................................................................................
Complete the Assembly .............................................................................................
Install ON/OFF Switch ..............................................................................................
Install the Stove Front ................................................................................................
Thermostat Connection (Optional) ............................................................................
Operation Your First Fire ...........................................................................................................
Pilot and Burner Inspection .......................................................................................
Flame & Temperature Adjustment .............................................................................
Flame Characteristics ...............................................................................................
Lighting and Operating Instructions ..........................................................................
Troubleshooting - Honeywell #8420 Gas Control System ........................................
Fuel Conversion Instructions ....................................................................................
Maintenance Annual System Inspection ........................................................................................
Logset and Burner/Cleaning and Inspection .............................................................
Care of Cast Iron .......................................................................................................
Cleaning the Glass ...................................................................................................
Glass Replacement ...................................................................................................
Gasket Replacement ................................................................................................
Inspect the Vent System Annually ............................................................................
Check the Gas Flame Regularly ...............................................................................
Wiring Diagrams .......................................................................................................
Replacement Parts
Optional Accessories
Warranty
Energuide ...................................................................................................................................40
...................................................................................................................................39
...................................................................................................................................33
...................................................................................................................................35
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30004177
Installation & Operating Instructions
The Jefferson Direct Vent/Natural Vent Room Heater, Model No.
JDVBRN, is a vented gas appliance listed to the ANSI standard
Z21.88-2005 and CSA-2.33-2005 for Vented Room Heaters,
and CSA 2.17-M91, Gas-Fired Appliances For Use at High
Altitudes.
The installation of the Jefferson Direct Vent/Natural Vent Room
Heater must conform with local codes, or in the absence of local
codes, with National Fuel Gas Code, ANSI Z223.1/NFPA 54 — 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.)h 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 equip
ment shall be performed only by a qualified agency, preferably
NFI or WETT (Canada) certified. 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 servic
ing 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.
An accessible tap is located above the pilot/On-Off knob for
checking the inlet pressure.
‘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. Check local codes for natural vent requirements.
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.
Jefferson Direct Vent /Natural Vent Gas Heater
The Jefferson Direct Vent/Natural Vent Room Heater, when
installed, must be electrically grounded in accordance with lo
cal 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 super
vised when they are in the same room as the appliance.
Clothing or other flammable materials should not be placed
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on or near the appliance.
Any safety screen, glass or guard removed for servicing
an appliance must be replaced prior to operating the ap
pliance.
The appliance area must be kept clear and free from com
bustible materials, gasoline, and other flammable vapors
and liquids.
The flow of combustion and ventilation air must not be ob
structed. 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.
* Aftermarket: Completion of sale, nor for purpose of resale, from the
manufacturer.
Jefferson Direct Vent/Natural Vent
Certified to:
ANSI Z21.88-2005 / CSA 2.33-2005
Vented Gas Fireplace Heaters
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
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30004177
3
Jefferson Direct Vent/Natural Vent Gas Heater
Installation & Operating Instructions
Requirements for the Commonwealth of
Massachusetts
All gas fitting and installation of this heater shall only be
done by a licensed gas fitter or licensed plumber.
For all side wall horizontally vented gas fueled
equipment installed in every dwelling, building or
structure used in whole or in part for residential
purposes, including those owned or operated by the
Commonwealth and where the side wall exhaust
vent termination is less than seven (7) feet above
finished grade in the area of the venting, including
but not limited to decks and porches, the following
requirements shall be satisfied:
Installation of Carbon Monoxide Detectors
At the time of installation of the side wall horizontal
vented gas fueled equipment, the installing plumber
or gas fitter shall observe that a hard wired carbon
monoxide detector with an alarm is installed on each
additional level of the dwelling, building or structure
served by the side wall horizontal vented gas fueled
equipment. It shall be the responsibility of the property
owner to secure the services of qualified licensed
professionals for the installation of hard wired carbon
monoxide detectors.
In the event that the side wall horizontally vented gas
fueled equipment is installed in a crawl space or an
attic, the hard wired carbon monoxide detector with
alarm and battery back-up may be installed on the next
adjacent floor level.
In the event that the requirements of this subdivision
can not be met at the time of completion of installation,
the owner shall have a period of thirty (30) days
to comply with the above requirements; provided,
however, that during said thirty (30) day period, a
battery operated carbon monoxide detector with an
alarm shall be installed.
Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in
accordance with the above provisions shall comply with
NFPA 720 and ANSI/UL 2034 listed and IAS certified.
Signage
A metal or plastic identification plate shall be
permanently mounted to the exterior of the building at
a minimum height of eight (8) feet above grade directly
in line with the exhaust vent terminal for the horizontally
vented gas fueled heating appliance or equipment. The
sign shall read, in print size no less than one-half (1/2)
inch in size, “GAS VENT DIRECTLY BELOW, KEEP
CLEAR OF ALL OBSTRUCTIONS”.
Inspection
The state or local gas inspector of the side wall
horizontally vented gas fueled equipment shall not
approve the installation unless, upon inspection, the
inspector observes carbon monoxide detectors and
signage installed in accordance with the provisions of
248 CMR 5.08(2)(a)1 through 4.
Exemptions
The following equipment is exempt from 248 CMR
5.08(2)(a)1 through 4:
• The equipment listed in Chapter 10 entitled
“Equipment Not Required To Be Vented” in the most
current edition of NFPA 54 as adopted by the Board;
and
• Product Approved side wall horizontally vented gas
fueled equipment installed in a room or structure
separate from the dwelling, building or structure
used in whole or in part for residential purposes.
MANUFACTURER REQUIREMENTS
Gas Equipment Venting System Provided
When the manufacturer of Product Approved side
wall horizontally vented gas equipment provides a
venting system design or venting system components
with the equipment, the instructions provided by the
manufacturer for installation of the equipment and the
venting system shall include:
• Detailed instructions for the installation of the venting
system design or the venting system components;
and
• A complete parts list for the venting system design or
venting system.
Gas Equipment Venting System NOT Provided
When the manufacturer of a Product Approved side
wall horizontally vented gas fueled equipment does
not provide the parts for venting the flue gases, but
identifies “special venting systems”, the following
requirements shall be satisfied by the manufacturer:
• The referenced “special venting system” instructions
shall be included with the appliance or equipment
installation instructions; and
• The “special venting systems” shall be Product
Approved by the Board, and the instructions for
that system shall include a parts list and detailed
installation instructions.
A copy of all installation instructions for all Product
Approved side wall horizontally vented gas fueled
equipment, all venting instructions, all parts lists
for venting instructions, and/or all venting design
instructions shall remain with the appliance or
equipment at the completion of the installation.
44
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
28"
(724 mm)
24"
(610 mm)
3"
(76 mm)
14
"
(368 mm)
C
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8"
(203 mm)
Valve
Inlet
Jefferson Direct Vent/Natural Vent Stove Dimensions
See Page 6 for Flue Collar
Centerline Dimensions.
Fig. 1 Jefferson dimensions.
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 CFM Corporation Z31B00 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 7FSDHASK 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.
4188
30004177
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Jefferson Direct Vent/Natural Vent Gas Heater
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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/NFPA 54 - latest edition. (EXCEPTION: Do not derate this appliance for altitude. Maintain the manifold pressure at 3.5” w.c. for Natural Gas,
and 10” w.c. for Propane).
In Canada, installation must be in accordance with the
current CSA B-149.1 Installation Codes and/or local
codes.
The installation should be done by a qualified
service person, preferably NFI or WETT (Canada)
certified 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.
Direct Vent System Only
A. Flat on corner wall
B. Room Divider
C. Island
Fig. 2 Possible stove locations.
D. Cross Corner
E. Flat on wall
ST207a
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.
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.
66
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” (25 mm) clearance to combustible materials. Maintain a 6” (150 mm) 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 includ
ed with the venting system for complete installation procedures.
30004177
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Jefferson Direct Vent /Natural Vent Gas Heater
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Parallel Installation:
Minimum Clearance and Flue Centerline,
Direct Vent and Natural Vent
Stove Clearances A: 4” (102 mm)
B: 4” (102 mm)
Pipe Centerlines C: 14¹⁄₂” (369 mm)
D: 9” (229 mm)
Fig. 3 Parallel installation, minimum back and side clearances and flue centerlines.
ST128a
Wall Centerline from Floor
ST131a
Effective Minimum
Wall Thimble 58
Centerline 54³⁄₄” (1378 mm) (Simpson Duravent Pipe)
Fig. 5 Minimum wall thimble centerline.
¹⁄₄” (1480 mm) (CFM Pipe)
Wall and Ceiling Clearances
Corner Installation: Minimum Clearance and
Flue Centerline, Direct Vent & Natural Vent
ST101a
A: Rear Wall 4” (102 mm)
B: Min. Clearance 43
C: Min. Alcove Height 72” (1830 mm)*
D: Max. Alcove Depth 48” (1220 mm)
Sidewall clearance 4” (102 mm)
* needed for installing DuraVent Minimum Vent Kit #2792
Stove Clearance A: 4: (102 mm)
Pipe Centerline B: 14³⁄₄” (375 mm)
Fig. 4 Corner installation, minimum corner clearance and flue
centerline.
ST129b
or CFM Minimum Vent Kit #7TFSDVSK
Fig. 6 Dimensions and clearances to ceiling or alcove.
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.
¹⁄₂” (1105 mm)*
30004177
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Jefferson Direct Vent/Natural Vent Gas Heater
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10 11 12 13 14 15 16 17 18 19 20
Vertical Run (in feet)
(Measured from the appliance flue collar to the top of the vent pipe.)
Horizontal Run (in feet)
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ST134a
FDV28
Horizontal
vent run
12/3/99 djt
areas modified
1/11/00 djt
Gas Specifications
Max. Min.
Input Input
Model Fuel Gas Control BTU/h BTU/h
JDVBRN Nat Millivolt 28,000 20,000
JDVBRP 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” w.c.
The installation of your CFM Corporation stove must
conform with local codes, or in the absence of local codes, with the National Fuel Gas Code ANSI
Z223.1/NFPA 54 - latest edition, or CSA B149.1
Installation code. (EXCEPTION: Do not derate this
appliance for altitude up to 4,500 feet (1,370 m).
Maintain the manifold pressure at 3.5” w.c. for Natural
Gas and 10.0” w.c. for LP Gas.
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’ (6 m) and include a
vertical rise of up to 40’ (12 m). (Fig. 7) Horizontal termination must also meet the criteria shown in Figures 9
through 11.
• 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.
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/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 (1,370m).
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.
88
High Elevations
May use up to
three 90° Elbows
One 90°
Elbow
Unacceptable
Venting Configuration
Fig. 7 Horizontal vent termination window.
ST134a
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
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Vertical Run (in feet)
(Measure from the appliance flue collar to the top of the vent pipe.)
Horizontal Run (in feet)
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ST132a
FDV28
Ve
rtical
vent run
12/3/99 djt
area
modified
1/11/00 djt
Vertical Termination - Direct Vent ONLY
A vertical vent system must terminate no less than 8’
(2.44 m) and no more than 40’ (12 m) 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
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.
All Vertical Terminations in this area
Require use of
the 2¹⁄₄” Restrictor
Plate*
Fig. 8 Vertical vent termination window.
*The Restictor Plate is used on Direct Vent
installations only.
30004177
Vertical terminations
must be within this area
No Restrictor Plate
No offset may be used
Unacceptable
Venting Configuration
within this area
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 9.
Important: All vent clearances must be maintained.
Check your vent termination clearances against
Figures 9 and 10.
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” (229 mm)} through
which exhaust gas could reenter the building.
• All vegetation within 3’ (914 mm) 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.
ST132a
9
Jefferson Direct Vent/Natural Vent Gas Heater
Vent Termination Clearances
Your stove is approved to be vented either through the
side wall, or vertical through the roof.
• CFM Corporation does not require any opening
for inspection of vent pipe.
• Only CFM Corporation 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.
1010
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
V
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X
X
X
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A
J
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F
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VENT TERMINATION AIR SUPPLY INLET
AREA WHERE TERMINAL IS NOT PERMITTED
H
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Operable
Operable
Fixed
Closed
V
B
INSIDE
CORNER DETAIL
V
A
G
N
N
CFM145a
General Venting Information - Termination Location
Canadian Installations1 US Installations
A = Clearance above grade, veranda, porch, 12” (30cm) 12” (30cm)
deck, or balcony
B = Clearance to window or door that may be 6” (15cm) for appliances 6” (15cm) for appliances
opened < 10,000Btuh (3kW), 12” (30cm) < 10,000 Btuh (3kW), 9”
for appliances > 10,000 Btuh (3kW) and (23cm) for appliances > 10,000
< 100,000 Btuh (30kW), 36” (91cm) Btuh (3kW) and < 50,000 Btuh
for appliances > 100,000 Btuh (30kW) (15kW), 12” (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’ (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’ (91cm) within a height of 15’ (5m) 3’ (91cm) within a height of 15’
extended above meter/regulator assembly above the meter/regulator assembly (5m) above the meter/regulator
assy
I = Clearance to service regulator vent outlet 3’ (91cm) 3’ (91cm)
J = Clearance to nonmechanical air supply inlet 6” (15cm) for appliances < 10,000 6” (15cm) for appliances
to building or the combustion air inlet to any Btuh (3kW), 12” (30cm) for < 10,000 Btuh (3kW), 9”
other appliances appliances > 10,000 Btuh (3kW) and < (23cm) for appliances > 10,000
100,000 Btuh (30kW), 36” (91cm) Btuh (3kW) and < 50,000 Btuh
for appliances > 100,000 Btuh (30kW) (15kW), 12” (30cm) for
appliances > 50,000 Btuh (15kW)
K = Clearance to a mechanical air supply inlet 6’ (1.83m) 3’ (91cm) above if within 10’
(3m) horizontally
L = Clearance above paved sidewalk or paved 7’ (2.13m)† 7’ (2.13m)†
driveway located on public property
M = Clearance under veranda, porch, deck or 12” (30cm)‡ 12” (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 Direct Vent Stoves are certified as part of the appliance, with clearances tested and approved by the list ing agency.
3. CFM Corporation assumes no responsibility for the improper performance of the appliance when the venting system does not
meet these requirements.
Fig. 9 Vent termination clearances.
30004177
2
11
Jefferson Direct Vent/Natural Vent Gas Heater
Outside Corner
Inside Corner
Termination Clearances
Termination clearances for buildings with combustible and noncombustible exteriors.
G =
Combustible
6" (152 mm)
Noncombustible
2" (51 mm)
F =
Combustible
6" (152 mm)
Noncombustible
2" (51 mm)
G
Balcony with no side wall
M =
Combustible &
Noncombustible
12" (305 mm)
M
Balcony with perpendicular side wall
M = 24" (610 mm)
P = 20” (508 mm)
M
F
Alcove Applications*
C
D
C
E
V
V
Combustible &
Noncombustible
V
V
V
E = Min. 6” (152 mm) for
non-vinyl sidewalls
Min. 12” (305 mm) for
vinyl sidewalls
O = 8’ (2.4 m) Min.
O
P
Venting Runs
Horizontal Run (in feet)
Vertical Run (in feet)
(Measured from floor of unit to
top of vent cap.)
A: Vertical installations up to 36' (12m) in
height. Up to an 18' 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' (12m) in
height. Up to a 24' horizontal vent run can be
installed within the vent system using a
maximum of two 45-degree elbows.
(Ratio = 2/3, Hor./Vert.)
= Acceptable venting configuration
= Unacceptable venting configuration
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
16 18 20 22 24 26 28 30 32 34 36
4 6 8 10 12 14
A
B
*NOTE: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions
specified for vinyl or non-vinyl siding and soffits. 1. There must be a 3’ (914 mm) minimum between termination caps. 2. All
mechanical air intakes within 10’ (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.
Fig. 10 Termination clearances.
Venting Requirements - Natural Vent Only
No.
of Caps D
1 3’ (914 mm) 2 x D
2 6’ (1.8 m) 1 x D
3 9’ (2.7 m) 2/3 x D
4 12’ (3.7 m) 1/2 x D
D
= # of Termination caps x 3
Min.
C
= (2 / # termination caps) x D
Max.
C
Min.
Max.
Actual
Actual
Actual
Actual
Actual
584-15
Fig. 11 Vent termination window - Natural Vent ONLY.
1212
NOTE: When using the FSDHAG, the restrictor
plate supplied with the stove is not used.
FP567b
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
Venting Requirements and Options -
Direct Vent ONLY
Approved Vent System Components
The Jefferson Heater must be vented to the outdoors
through an adjacent exterior wall or through the roof.
The venting system must be comprised of the appropriate listed venting components specified on this page.
These parts are available from DuraVent Corporation or
your CFM Corporation Dealer.
Refer to Figure 4 for dimensions relevant to the standard minimum-vent kits.
Simpson DuraVent Components
Minimum Horizontal Vent Kit 2792
Starter Pipe Assembly (incl. inner & outer sections)
2768*
90° Elbow, Blk. 990B*
45° Elbow, Gal. 945
6” Straight, Blk. 908B*
9” Straight, Blk. 907B
11” - 14⁵⁄₈” Adjustable Straight Section 911B
12” Straight 906
24” Straight 904B*
36” Straight 903B
48” Straight 902
Horizontal Vent Cap 984*
Wall Plate 940*
Vinyl Siding Shield 950
Snorkel Termination - 14” 982
Snorkel Termination - 36” 981
Wall Strap 988
Cathedral Ceiling Support Box 941
Storm Collar 953
Firestop Spacer 963
Flashing 0/12 - 6/12 943
Flashing 6/12 - 12/12 943S
Steel Chimney
Kit A 931
Kit B 932
Kit C 933
Masonry Chimney Kit 934
Vertical Termination Cap (High Wind) 991
Vertical Termination Cap (Low Profile) 980
*Included in Minimum Horizontal Vent Kit #2792
All DuraVent Straight vent pipe sections have a net length
1¹⁄₂” (37mm) less than the nominal dimension; i.e., a 6”
(152mm) Straight pipe section has an effective length of 4¹⁄₂”
(115mm).
CFM Vent Components
The following kits are available to meet the needs of
most installations. All pipe has a 7” outer diameter and
includes a 4” diameter inner section. A (CG) designation indicates the part is finished in Charcoal Gray
paint. Consult your dealer about other vent parts that
may be appropriate to complete the installation.
Min. Through the Wall Vent Kit 7TFSSK
(1) 90-Degree Elbow (CG)
(1) 24” Straight pipe (CG)
(1) 24” - 42” Adjustable Straight Pipe
(1) Side Wall Termination
(1) Firestop
(1) Zero-clearance sleeve
(1) Hardware package
(1) Finishing plate (CG)
(1) Finishing collar (CG)
(4) Charcoal Gray flue pipe rings
Starter Kit for Below-Grade Termination 7TDVSKS
(1) Snorkel Termination (7TDVSNORK)
Vertical Termination Kit, 1/12-6/12 Pitch 7TDVSKVA
(1) Combination Horizontal Offset / Roof Support
(1) Vertical Termination
(1) Storm Collar
(1) 1/12-6/12 Flashing
(1) Finishing Plate (CG)
(1) Finishing Collar (CG)
(1) Polished Brass Flue Pipe Ring
(1) Hardware Package
Vertical Termination Kit, 7/12-12/12 Pitch 7TDVSKVB
(1) 7/12 - 12/12 Flashing
and all of the other Vertical Termination parts.
Vertical Termination, Flat Roof 7DVSKVF
(1) Flat Flashing
and all of the other Vertical Termination parts.
Twist Lock 12” Straight Pipe (CG) 7TFSDVP12
(1) 12” Non-adjustable Pipe
Twist Lock 12” - 18” Adjustable Pipe 7TFSDVP1218
(1) 12” - 18” Adjustable Pipe
Twist Lock 24” Straight Pipe (CG) 7TFSDVP24
(1) 24” Non-adjustable Pipe
Twist Lock 48” Straight Pipe (CG) 7TFSDVP48
(1) 48” Nonadjustable Pipe
Twist Lock 45-Degree Elbow (CG) 7TFSDVT45
for vertical offsets
(1) 45-degree Elbow
Draft Hood Adapter FSDHAG
NV Stove Kit 7FSSK
(1) 7” Diameter Polished Brass Trim Ring
(1) 48” Nonadjustable Pipe (CG)
(1) 24” Nonadjustable Pipe (CG)
(1) Finishing Plate
(1) Finishing Collar (CG)
(1) 90 Degree Elbow (CG)
Stove Kit 7FSDHASK
Includes all parts in the 7FSSK plus the Draft Hood Adapter
FSDHAG
Combination Offset/Roof Support 7DVCS
Attic Insulation Shield 7DVAIS
7” Charcoal Gray Pipe Rings, (4) 7FSDRG
7” Polished Brass Pipe Rings (4) 7FSDRP
Wall Thimble 942G
NOTE: Direct vent pipe may be used on the Natural
Vent system from the top of the draft hood adapter to
the ceiling.
30004177
13
Jefferson Direct Vent/Natural Vent Gas Heater
Assembly Procedures
Failure to position the parts in accordance with these diagrams or failure to
use only parts specifically approved for
use with this heater may result in property damage or personal injury.
This heater and components are heavy. Have
help available for assembly.
• Phillips screwdriver (stub) • power drill
• utility knife • reciprocating saw
• metal drill bit: size 28 (.140”/3.5mm)
The parts bag containing this manual also includes the
following parts:
• Remote Switch • Switch Bracket
• Switch Wire • 1/4-20 x 3/8” screws (3)
• Cement • Restrictor Plate
• #10 Sheet metal screws (2)
The logset and 4” inner vent starter pipe are packed inside the firebox. Use the following procedure to unpack
these parts.
1. Lift the stove front up and then swing the bottom out
and away to disengage it from the stove body. Refer
to Figure 37, Page 23.
2. Swing open the swiveling latches at the top left and
right corners of the glass frame. (Fig. 12)
WARNING
Tools Required
Unpack the Stove
NOTE: Verify the two relief doors (located on top of
the firebox) are properly seated on the gasket. The
doors should sit flush on the gasket and should lift
easily from the seal around the opening.
Install the Optional Fan
WARNING
This appliance is equipped with a three-prong
(grounded) plug for your protection against shock
hazard and should be plugged directly into a
properly grounded three-prong receptacle. Do not
cut or remove the grounding prong from this plug.
If you are installing the optional convection Fan Kit
#2960 (FK28), continue here. If you will not install the
Fan Kit, go to Page 15, Venting System Assembly.
1. The fan kit includes a blower assembly and a
rheostat assembly connected by a cable. (Fig. 14)
The blower assembly and the rheostat mount to the
rear shroud of the stove. The assembly includes a
‘snapstat’ which automatically turns the fan ON (or
OFF) above (or below) approximately 109° F (43°
C). The rheostat also provides a range of fan speed
settings from Off (which overrides the snapstat
function) to HIGH. Unpack and inspect the blower
assembly. Confirm that the fan spins freely.
2. Attach the snapstat assembly to the snapstat bracket with two (2) sheet metal screws. (Fig. 13) Remove
the 1/4-20 x 3/8” hex head bolt installed in the hole
in the right rear ledge of the firebox. Use that bolt
to secure the snapstat bracket to the firebox. The
mounting hole is slotted to allow you to adjust the
bracket so the snapstat bracket head makes contact
with the firebox. (Fig. 13)
ST208
Fig. 12 Swivel the latches to release the glass frame from
the firebox.
3. Pull the top edge of the glass and frame assembly
away from the firebox and lift it off its supports on the
bottom of the firebox face. Place the assembly out of
the way on a flat, padded surface such as a counter
protected by a towel.
4. Take the logset and all other loose parts out of the
firebox and set them aside in a protected area for
installation after the venting is complete.
1414
1/4-20 x 3/8”
Phillips
Screw
1/2” Sheet
Metal Screw
Snapstat
Snapstat Bracket
ST239
Fig. 13 Snapstat assembly and installation.
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
3. Attach the fan to the rear shroud by engaging the
upper flange of the fan skirt under the lower edge of
the shroud and secure the skirt with the four screws
and one star washer provided. (Fig. 14)
4. The rheostat control switch attaches to the left side
of the valve bracket at the front of the stove.
• Remove the plug from the rheostat bracket.
• Insert the switch box shaft through the hole in
the back of the right side of the valve bracket,
aligning the locator pin with the smaller hole in
that bracket.
• Attach the retaining nut to the switch control
shaft to secure it to the plate.
• Attach the control knob to the rheostat shaft.
• Use the wire tie to secure the fan and rheostat
wire harnesses together.
Upper
Flange
Venting System Assembly - Direct Vent
General Information
The Jefferson is approved for installation only with the
vent components listed on Page 13. Follow the vent
component instructions exactly.
For U.S. installations: The venting system must conform with local codes and/or the current National Fuel
Gas Code, ANSI Z223.1/NFPA 54.
For Canadian installations: The venting system must
conform to the current CSA B149.1 installation code.
Install the Vent Adapter Pipe
(CFM Corporation Vent Components)
1. Install the Restrictor Plate. Consult the “Vertical
Terminations” on Page 9 to determine whether the
restrictor plate is needed. If so, put the restrictor
plate in place within the inner flue collar as shown in
Figure 16. NOTE: The restrictor plate supplied with
the vertical termination should be discarded. Install
restrictor plate supplied with the stove directly at
stove outlet.
ST240
Fig. 14 The upper flange of the fan skirt should be located
behind the lower edge of the shroud.
ST241
Fig. 15 Correct position of fan skirt installation.
ST210
Fig. 16 Install the restrictor plate only if required for the venting configuration. Refer to Page 9.
2. Attach Inner Starter Pipe, (found in with the log
set), to the next section of inner pipe.
• Run a bead of sealant about 1/2” from the upper
end of the Inner starter pipe and join the two sections together.
• Drill three pilot holes into the Inner Starter and
secure the assembly with three sheet metal screws.
(Fig. 17)
3. Dry fit the Inner Pipe assembly to the stove for
the purpose of determining the center line of the
pipe on the wall.
• Side Wall Terminations: Dry fit the outer elbow
with the vertical outer vent and confirm the centerline
alignment with the wall thimble opening.
-
30004177
15
Jefferson Direct Vent/Natural Vent Gas Heater
CEMENT
CEMENT
CEMENT
First Section of
Vent Pipe
1/4”-20 x 1/2”
Phillips Screw
4” Inner
Starter
Pipe
ST211
Fig. 17 Connect the inner starter with the next section of
inner vent pipe.
4. Attach the Inner Vent Assembly to the stove.
• Run a bead of sealant around the bottom end of
the starter pipe and attach the assembly to the stove
using three 1/4-20 x 3/8” Phillips screws provided in
the parts bag. (Fig. 18)
ST213
Fig. 19 Fasten outer pipe with #12 x 1/2” sheet metal screws.
Install the Vent Adapter Pipe
Fig. 18 Attach inner assembly to flue collar.
5. Install the Outer Adapter Pipe. Insert the pipe
over the stove flue collar, keeping the vertical seam
oriented to the back of the stove. Also, be sure to
align holes on the pipe with the holes on the flue
collar of the firebox. Fasten the pipe to the holes in
the flue collar with the #12 x 1/2” sheet metal screws
provided. (Fig. 19)
ST212
(Simpson Dura-Vent Components)
1. Install the Restrictor Plate. Consult the “Vertical
Terminations” on Page 9 to determine whether the
restrictor plate is needed. If so, put the restrictor
plate in place within the inner flue collar as shown in
Figure 16.
2. Discard the inner starter pipe shipped with the logset. Using the starter pipe assembly listed on Page
13, slide the inner section out to allow access.
• Run a bead of sealant around the bottom end of
the starter pipe and attach the assembly to the stove
using three 1/4-20 x 3/8” Phillips screws provided in
the parts bag. (Fig. 20)
3. Install the Outer Adapter Pipe. Apply a 1/4” bead
of cement around the outside surface, about one
inch from the crimped end. (Fig. 21) Orient the vertical seam to the rear, and insert the crimped end of
the outer pipe into the flue collar. Fasten with three
(3) sheet metal screws provided.
1/4-20 x
3/8” Phillips
Screws
Inner Adapter Pipe
1616
ST355
Fig. 20 Simpson Dura-Vent - install inner adapter pipe.
30004177
ST356
Jefferson Direct Vent /Natural Vent Gas Heater
12”
(305mm)
Max. Length
Sleeve
#8 Sheet
Metal Screws
Fig. 21 Simpson Dura-Vent - install outer adapter pipe.
Side Wall Termination Assembly
1. Locate the vent opening on the wall. Refer to Page
7, Figure 5, to determine the opening centerline.
It may be necessary to first position the stove and
measure to find the hole location. Depending on
whether the wall is made of combustible materials, cut the opening to the size shown in Figure
22. Combustible wall openings must be framed as
shown in Figure 22.
CFM System
9³⁄₈”
(240mm)
Combustible Wall
DuraVent
System
10”
(254mm)
9³⁄₈”
(240mm)
10”
(254mm)
Framing Detail
7¹⁄₂”
Firestop
Fig. 23 Assemble the wall sleeve and firestop.
ZCS103
For DuraVent pipe only: Install vent pipe by align-
ing the locking system together, sliding the pipes
together and twisting clockwise.
• Install 90° elbow. Twist lock as before.
• Slide the wall plate over horizontal run before at-
taching the horizontal run to the elbow. Fasten wall
plate to wall.
4. For CFM Vent Pipe only: If necessary, measure
to determine the vertical length (X) of pipe required
from the adapter pipe to the wall cutout centerline,
including a 2” overlap at the joint. (Fig. 24) use a
hacksaw or tin snips to trim the pipe as needed.
X
Noncombustible
VO584-100
Fig. 22 Locate vent opening.
Wall
2. Measure the wall thickness and cut the wall sleeve
sections to proper length (MAXIMUM 12”). Assemble
the sleeve with the #8 sheet metal screws supplied.
Attach the firestop plate to the sleeve end with the
holes. (Fig. 23) NOTE: The wall sleeve is required
in combustible walls only.
3. Install the Wall Firestop/Sleeve assembly into the
wall cutout and fasten the firestop to the wall cutout
framing members. (Fig. 23)
30004177
ST214
Fig. 24 Determine the vertical pipe length.
5. Install first the inner then the outer straight pipe
section(s), trimmed end down, to the point of the elbow. Drill 3 holes through each joint and fasten with
sheet metal screws.
17
Jefferson Direct Vent/Natural Vent Gas Heater
6. Install the elbow using 3 sheet metal screws at each
joint.
7. Measure, and cut if needed, the appropriate length
of pipe section needed to make the connection
through the wall. Include a 2” overlap; i.e. from the
elbow to the outside wall face, about 2” or the distance required if installing a second 90° elbow. (Fig.
25)
8. Slip the wall plate and trim collar over the interior
end of the horizontal pipe and install into the wall
sleeve. Seal the joint inside the wall plate if needed
to keep cold air from being drawn into the home.
9. Connect the horizontal pipe to the elbow. Fasten the
wall plate to the pipe with three sheet metal screws.
Slide the trim collar up against the wall plate to cover
the screws. (Fig. 26)
X
Seal Both
Terminal Ends
Caulk Plate Joint with
Weatherproof Sealant
Fig. 27 Install the vent terminal.
ST217
Vent Termination Below Grade
Install Snorkel Kit #7FSDVSKS when it is not possible
to meet the required vent termination clearances of 12”
(305 mm) above grade level. The snorkel kit will allow
installation depth of down to 7” (178 mm) below grade
level. The seven inches is measured from the center of
the horizontal vent pipe as it penetrates the wall. If the
venting system is installed below grade, a window
well must be installed with adequate and proper
drainage. (Fig. 28)
ST215
Fig. 25 Measure the horizontal length.
Trim Collar
Wall
Sleeve
ST216
Fig. 26 Install the horizontal pipe and wall plate parts.
Wall Plate
10. For both CFM and DuraVent Systems: Install the
vent terminal. (Fig. 27) Apply high temperature sealant one inch from the ends of the inner and outer
collars. Guide the inner and outer vent termination
collars into the adjacent pipes. Double check that
the vent pipes overlap the collars by 2”. Fasten the
termination to the wall with the screws provided, and
caulk the joint with weatherproof sealant.
11. For CFM only:
Install Charcoal Gray Pipe Rings
(#7FSDRG) or Polished Brass Pipe Rings (#7FSDRP)
at pipe joints, if desired.
NOTE: Be sure to maintain side wall clearances and
vent run restrictions. Refer to Pages 7,8, 9, Figures 3,
4, 7, 8.
1. Establish the vent hole through the wall.
2.
Remove soil to a depth of approximately 16” (406 mm)
below the base of the snorkel. Install a window well
(not supplied). Refill the hole with 12” (305 mm) of
coarse gravel and maintain a clearance of at least 4”
(102 mm) below the snorkel. (Fig. 28)
3. Install the vent system as described on pages 15-18.
4. Be sure to make a watertight joint around the vent
pipe joint at the inside and outside wall joints.
5. Apply high temperature sealant around the inner
and outer snorkel collars. Join the pipes and fasten
the snorkel termination to the wall with the screws
provided.
6. Level the soil to maintain a 4” clearance below the
snorkel.
If the foundation is recessed, use extension brack
ets (not supplied) to fasten the lower portion of the
snorkel. Fasten the brackets to the wall first, and
then fasten to the snorkel with self-tapping #8 x 1/2”
sheet metal screws. Extend the vent pipes out as far
as the protruding wall face. (Fig. 29)
-
1818
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
Wall Screws
and Anchors
Snorkel
Termination
Cap
4” Clearance
Gravel
Drain
Window
Well
Fig. 28 Snorkel kit installation.
Recessed Wall
Waterproof Seal
Around PIpe
Firestop
Firestop
ST218
3. Cut the opening:
CFM System: 9
³⁄₈” x 9³⁄₈” (240 x 240 mm)
DuraVent System: 10” x 10” (254 x 254 mm)
4. Plumb any additional opening through the roof or
other construction that may be needed. In all cases,
the opening must provide a minimum of 1” (25 mm)
clearance to the vent pipe.
5. Place the stove in its final position.
6. Install firestop(s) #7DVFS and Attic Insulation Shield
#7DVAIS as needed. (Fig. 30) If there is a room
above ceiling level, a firestop must be installed on
both the bottom and top sides of the ceiling joists.
If an attic is above ceiling level, an attic insulation
shield must be installed.
#7DVAIS
Attic Insulation
Shield
Use Four
8d Nails
#7DVFS
Firestop in
Upper Floor
Sheet Metal
Screws and
Bracket
Wall Screws
and Anchors
Waterproof Seal
Around Pipe
ST219
Fig. 29 Use extension brackets to mount snorkel against
recessed wall.
Finishing
Collar
7” Pipe
Wall Plate
Vertical (Through the Roof)
Vent Assembly
Note that all vertically terminated installations
must, where specified, use the restrictor plate to
comply with Vertical Termination Window (Page 9,
Figure 8), included in the hardware bag.
Make certain the vent system conforms to all other
requirements for vertical termination as specified on
Page 9.
This installation will require you to first determine the
roof pitch and use the appropriate vent components.
Refer to Figures 8 and 9 on Pages 9 and 10.
1. Locate the final position of the stove, observing all
clearances for both the vent and the stove.
2. Plumb to the center of the inner (4”) flue collar from
the ceiling above, and mark that location.
#7DVFS
ST222
Fig. 30 Install firestops and attic insulation shield.
Firestop in
Ceiling
7. Install the appropriate roof support and flashing,
making certain that the upper flange of the flashing
base is below the shingles. (Fig. 31)
8. Install appropriate pipe sections until the vent run
reaches above the flashing. The enlarged ends of
the vent sections always face downward.
9. Install the storm collar and seal around the joints.
(Fig. 31)
10. Add additional vent lengths to achieve the proper
overall height.
11. Apply cement to the inner and outer termination col
lars and install the terminal cap.
Venting System Assembly - Natural Vent
General Information
The Jefferson Heater is shipped from the factory as a
Direct Vent Heater. It may be converted to a Natural
Vent heater by installing the CFM Corporation Model
Z31D00 FSDHAG Draft Hood Adapter.
The Jefferson Heater is approved for installation as a
Natural Vent unit. CFM Direct Vent outer pipe (7FSSK)
could be used directly after the Draft Hood Adapter
-
30004177
19
Jefferson Direct Vent/Natural Vent Gas Heater
CEMENT
Use three #5
sheet metal
screws at
each joint
Sealant
Storm Collar
Upper
edge of
#7DVSKV
(A, B, or
F) Roof
Support
Flashing
Fig. 31 Roof support and flashing.
flange goes
under upper
shingles
ST221
up to the ceiling, then B-vent pipe must be used. Do
not mix types of B-vent pipe; use components from
one maker or the another. Follow the vent component
maker’s instructions exactly. The heater will also accept
standard or enamelled 7” (150 mm) diameter pipe,
aroudn the Type B venting, for decorative purposes
only. (Fig. 32)
NOTE: The restrictor plate supplied with the stove
is not used for Natural Vent applications.
The Jefferson stove, when installed as a Natural vent
heater, includes a vent safety switch. (Page 32, Fig. 63)
Operating the stove when it is not connected to a
properly installed and maintained venting system, or
tampering with or disconnecting the vent safety switch,
can result in carbon monoxide (CO) poisoning and
possible death.
For U.S. installations: The venting system must
conform with local codes and/or the current National
Fuel Gas Code, ANSI Z22.1.
For Canadian installations: The venting system must
conform to the current CSA B149.1 installation code.
Decorative 7”
Pipe
4” B-vent
Pipe
Draft Hood
Adapter
Fig. 32 Decorative 7” pipe may be fitted around the B-vent
pipe.
CFM outer pipe
(7FSSK) may be
used after Draft
Hood up to the
ceiling.
ST358
sections usually do not need to be fastened at each
joint, other than slip sections. If the layout includes
a slip section, this should be the last section of pipe
visible in the room, at the ceiling. Complete the venting
according to the vent maker’s instructions.
Install the Vent Pipe
Apply a bead of sealant around bottom end of inner
starter pipe (found in bag with logset) and attach to
stove. Apply a bead of sealant around top of inner
starter pipe and install the Z31B00 FSDHAG Draft
Hood according to Draft Hood instructions. (Fig. 33)
Attach the first section of venting to the draft hood.
Depending on the length of the individual venting
sections and the lengths of the decorative pipe (if
installed), you may need to slip the decorative pipe over
the venting sections before attaching upper sections
to lower ones. The sections of decorative pipe should
be oriented with their seams (if any) toward the wall;
2020
ST357
Fig. 33 Install draft hood adapter.
30004177
Install the Log Set
1. Remove the logs from their packaging and inspect
each piece for damage. DO NOT INSTALL DAMAGED LOGS.
Figure 34
2. Install the rear log (1) by
centering it side to side
on the sheet metal shelf
at the back of the firebox.
(Fig. 34)
3. Install the left (2), and
right (3) middle logs by
engaging holes on their
bottoms with pins on the
burner brackets. (Fig. 34)
Left Middle
Log (2)
Jefferson Direct Vent /Natural Vent Gas Heater
Rear Log (1)
Right Middle Log (3)
Top Log
(5)
Figure 35
Upper Log (4)
ST223
Decorative Grate
4. Loosely sprinkle the lava rocks directly on top of the
burner between the decorative grate and the middle
logs. Do not place any ember material behind the
middle logs. (Fig. 35)
5. Engage the upper log (4) with the rear log and the
right middle log as shown in Figure 35. Engage the
top log (5) with the upper log and the left middle log.
(Fig. 35)
Figure 36
30004177
ST224
Lava Rock
ST225
21
Jefferson Direct Vent/Natural Vent Gas Heater
Connect the Gas Supply Line
Check the Rating Plate attached by a steel cable to the
firebox, to confirm that you have the appropriate firebox
for the type of fuel to be used. The Jefferson may be
converted from one gas to another using the appropriate Fuel Conversion Kit listed on Page 34.
In the U.S.; Gas connection should be made in accordance with current National Fuel Gas Code, ANSI
Z223.1/NFPA 54. Since some municipalities have
additional local codes, be sure to consult your local
authority.
In Canada; consult the local authority and CSA-B149.1
installation code.
Always check for gas leaks with a mild
soap and water solution. Do not use an
open flame for leak testing.
Light the pilot according to the directions on Page 26,
before going to the next step.
CAUTION
This appliance should only be connected
by a qualified gas technician. Test to
confirm manifold pressures as specified
below.
The Jefferson Heater and its individual shutoff
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 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
pressure equal to or less than 1/2 psig.
There must be a gas shutoff between the stove
and the supply.
In order to connect Natural Gas, use a fitting
with 3/8” NPT on the valve side and 1/2” natural
gas supply line with an input of 28,000 BTUs at a
manifold pressure of 3.5” between minimum inlet
supply of 5.5” w.c. and maximum of 14.0” w.c.
In order to connect Propane, use a fitting with 3/8”
NPT on the valve side and 1/2” propane gas sup
ply line with an input of 28,000 BTUs at a manifold
pressure of 10.0” between a minimum inlet supply
of 11.0” w.c. and maximum of 14.0” w.c.
-
Burner Information
The appliance must only use the gas specified on the
rating plate, unless converted using a CFM Corporation
Fuel Conversion Kit. To convert from Natural Gas to LP
use Kit #30004180.
Conversion instructions are provided with each kit and
beginning on Page 28 in this manual.
THIS APPLIANCE SHOULD BE CONNECTED
TO THE GAS SUPPLY ONLY BY A QUALIFIED GAS SERVICE TECHNICIAN. FOLLOW
ALL LOCAL CODES.
THERE MUST BE A GAS SHUT-OFF BE
-
TWEEN THE STOVE AND THE SUPPLY.
In order to connect Natural Gas, use a fitting with 3/8”
NPT on the valve side and 1/2” natural gas supply line
with an input of 28,000 BTUs at a manifold pressure
of 3.5” between minimum inlet supply of 5.5” w.c. and
maximum of 14.0” w.c.
In order to connect Propane, use a fitting with 3/8”
NPT on the valve side and 1/2” propane gas supply line
with an input of 28,000 BTUs at a manifold pressure of
10.0” between a minimum inlet supply of 11.0” w.c. and
maximum of 14.0” w.c.
Air Shutter Adjustment
The Jefferson is shipped from the factory with the air
shutter adjusted to the minimum allowed opening. Refer
to Table 1. Based on the altitude where the stove is
located, a shutter adjustment is acceptable to provide
mixed balance of flame color/glow. To adjust the shutter
opening, follow the steps below.
NOTE: The air shutter may only be adjusted to a more
open position. The factory setting is the minimum allowable air shutter setting.
Table 1. Air Shutter Adjustment
Minimum rear injector air inlet openings
Model Natural Gas LP
Direct Vent 1/2” (13 mm) 1/2” (13 mm)
Natural Vent 1/2” (13 mm) 1” (25 mm)
Air Shutter Adjustment Instructions
To adjust the air shutter, follow these steps:
CAUTION: Allow unit to cool if it has been in
operation.
1. Remove stove front. Lift stove front up and then
swing bottom out and away to disengage from the
stove body. (Fig. 37)
2. Swing open the swiveling latches at the top left and
right corners of the glass frame. (Page 14, Fig. 12)
2222
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
Reassemble the shutter to allow the rear injector air
inlet to close from a minimum 1/2” opening to fully
open. (Fig. 40) You may have to try more than once
to find the correct air shutter opening for best results
depending on your altitude.
Air Shutter
See Table 1
(Original Position)
Burner
ST229a
Fig. 37 Remove stove front.
3. Pull the top edge of the glass and frame assembly
away from the firebox and lift it off its supports on the
bottom of the firebox face. Place the assembly out of
the way on a flat, padded surface such as a counter
protected by a towel.
4. Take the logset out of the firebox if previously installed.
5. Remove the rear log bracket by unfastening the
screw. (Fig. 38)
6. Remove the right and left log bracket assembly by
unfastening the two screws that hold the burner in
place. (Fig. 38)
Remove Screws
Left & Right Log
Bracket Assembly
Fig. 38 Remove rear log bracket and left and right log bracket
assembly.
Rear Log Bracket
Pilot
ST350
7. Hold the burner at the right hand side and lift to clear
the right burner leg. Then pull to the right to clear the
injectors on the left hand side.
8. The air shutter is located on the bottom of the burner
to the left. (Fig. 39) Unfasten the two nuts holding
the shutter in place. The shutter may be adjusted
between the factory adjusted 1/2” to fully open.
ST352
Fig. 39 Air shutter in original from-the-factory position.
Front
Injector
Air Inlet
Rear Injector Air Inlet
Fig. 40 Air shutter adjusted.
Air Shutter
(May be adjusted up to fully open)
Burner
ST351
9. Refasten the two nuts and assemble the burner into
the unit by sliding the burner in at an angle with the
left side lower than the right side. Slide the left side
onto the injectors. Lower the right hand side down
into place. Make sure the burner is as far left as possible and the injector shoulders are inside the burner.
NOTE: It is very critical to keep the left burner leg,
which holds the injectors at a 90° angle to the base.
(Fig. 41) This keeps the orifices aligned with tubes
on the inside of the burner. Failure to do so could
affect the flame appearance and performance of the
unit.
10. Refasten the right and left log bracket assembly.
11. Refasten the rear log bracket.
12. Replace logs.
13. Replace glass and stove front.
Follow lighting instructions on Page 26. Check flame
color appearance. NOTE: Allow stove to burn for at
least 1/2 hour to establish full flame color.
Should color need further adjustment, repeat Steps 112 for further air shutter adjustment.
30004177
23
Jefferson Direct Vent/Natural Vent Gas Heater
90°
PILOT
ADJ
TP
TH
TPTH
Left Burner Leg
Injector Orifices
ST353a
Fig. 41 Remove and replace injector orifices.
Complete the Assembly
• Open the swiveling latches (cams) on the top left
and right corners of the glass frame.
• Position the glass and frame against the firebox by
placing the bottom edge on the brackets on the bottom face of the firebox.
• Swing the assembly against the firebox, and close
the latches firmly against the pins protruding from
the firebox top.
Install the Stove Front
The front panel attaches to the stove by four (4) steel
tabs that engage with corresponding cast ribs on the
sides and bottom of the stove body. Position the front
about 3” down from the stove top and lift the plate to
engage the upper tabs behind the adjacent ribs on the
side. (Fig. 44) Then lower the plate into position, so the
lower tabs engage with the corresponding ribs at the
bottom. (Fig. 45)
When properly installed, the bottom of the stove front
cannot be pulled away from the sides without also lifting
it.
Upper Tabs
3”
(76 mm)
Install ON/OFF Switch
The switch assembly parts are found in the parts bag.
1. Attach switch assembly to left rear side of stove
shroud (when facing shroud) using two screws and
existing holes in shroud. (Fig. 42)
2. Run wires down back of stove, under bottom of rear
shroud to valve.
3. Attach wires to valve terminals. (Fig. 43)
Switch Assembly
Screws
Fig. 42 Attach switch assembly to rear shroud.
Fig. 43 Attach switch wires to valve.
2424
Existing
Holes
ST315
ST228
Control
Door
Lower Tabs Engage
Ribs in bottom
Fig. 44 Install stove front.
Side Rib
Front Tab
Stove Front
Fig. 45 Engage with side ribs.
Stove Side
ST229
ST279
Thermostat Connection (optional)
Use only a thermostat rated for 500 - 750 millivolts.
Check the table below for the appropriate gauge thermostat wire to use for the length of lead required in your
installation.
Thermostat
Wire / Gauge Maximum Run
18 20 feet
16 20 - 40 feet
14 up to 60 feet
1. Install the wall thermostat in the desired location and
run the wires to the stove location. Terminate these
leads with 1/4” female connectors.
2. Connect the thermostat wires to the valve. (Fig. 43)
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
Turn
counterclockwise
to decrease
flame height
Turn clockwise
to increase
flame height
Operation
Your First Fire
Read these instructions carefully and familiarize
yourself with the burner controls shown in Figure 47.
Locate the pilot assembly, Figure 46. Follow the lighting
instructions on Page 26 exactly.
During the first fire, it is not unusual to smell some
odor associated with new logs, paint and metal being
heated. Odors should dissipate within the first eight to
ten hours, however, you can open a window to provide
fresh air to alleviate the condition.
Pilot and Burner Inspection
Each time you light your heater check that the pilot
flame and burner flame patterns are as shown in Figures 48, 49, 50. If flame patterns are incorrect, turn the
heater off. Contact your dealer or a qualified gas technician for assistance. Do not operate the heater until the
pilot flame is correct.
Follow regular maintenance procedures as described
on Page 30.
Flame Characteristics
It is important to periodically perform a visual check of
the pilot and the burner flames. Compare them to Figures 48, 49, 50. If any of the flames appear abnormal,
call a service person.
ST233
Fig. 48 Correct pilot flame appearance. PSE pilot.
Pilot Assembly
Thermocouple
Fig. 46 Pilot assembly location.
ST232
Flame & Temperature Adjustment
For stoves equipped with HI/LO valves, flame adjustment is accomplished by rotating the HI/LO adjustment
knob located near the center of the gas control valve.
(Fig. 47)
CO105c
Fig. 49 Correct pilot flame pattern. SIT valve.
ST234
Fig. 50 Correct burner flame appearance.
Fig. 47 Flame adjustment knob for Honeywell valve.
30004177
25
Jefferson Direct Vent/Natural Vent Gas Heater
3/8" - 1/2"
PILOT
ON
OFF
ON
P
I
L
O
T
O
F
F
O
F
F
5
4
3
2
1
O
F
F
P
i
l
o
t
Lighting and Operating Instructions
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING:If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.
A. This heater has a pilot which must be lit manu
ally. When lighting the pilot follow these instructions exactly.
B. BEFORE LIGHTING smell all around the heater
area for gas. Be sure to smell next to the floor
because some gas is heavier than air and will
settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any fireplace
• Do not touch any electric 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.
Lighting Instructions
-
-
• If you cannot reach your gas supplier, call the
Fire Department
C. Use only your hand to push in or turn the gas
control knob. Never use tools. If the knob will not
push in or turn by hand, do not try to repair it, call a
qualified service technician. Applying force or any
attempted repair may result in a fire or explosion.
D. Do not use this fireplace if any part has been under
water. Immediately call a qualified service techni
cian to inspect the heater and to replace any part of
the control system and any gas control which has
been under water.
1. STOP! Read the safety information above.
2. Turn off all electrical power to the fireplace.
3. For MN/MP/TN/TP appliances ONLY, go on to
Step 4. For RN/RP appliances turn the On/Off
switch to “OFF” position or set thermostat to
lowest level.
4. Open control access panel.
5. Push in gas control knob slightly and turn
clockwise to “OFF”.
Euro SIT SIT NOVA
Honeywell
6. Remove glass door before lighting pilot. (See
Glass Frame Removal section).
7. Wait five (5) minutes to clear out any gas. Then
smell for gas, including near the floor. If you
smell gas, STOP! Follow “B” in the safety information above. If you do not smell gas, go to the
next step.
8. Visibly locate pilot by the main burner.
9. Turn knob on gas control counterclockwise
to “PILOT”.
10. Push the control knob all the way in and hold.
Immediately light the pilot by repeatedly depressing the piezo spark ignitor until a flame appears.
Continue to hold the control knob in for about one
(1) minute after the pilot is lit. Release knob and it
will pop back up. Pilot should remain lit. If it goes
out, repeat steps 5 through 8.
• If knob does not pop up when released, stop
and immediately call your service technician or
gas supplier.
• If after several tries, the pilot will not stay lit,
turn the gas control knob to “OFF” and call your
service technician or gas supplier.
11. Replace glass door.
12. Turn gas control knob to “ON” position.
13. For RN/RP appliances turn the On/Off switch to
“ON” position or set thermostat to desired setting.
14. Turn on all electrical power to the fireplace.
1. Turn the On/Off switch to Off position or set the
thermostat to lowest setting.
2. Turn off all electric power to the fireplace if
service is to be performed.
2626
To Turn Off Gas To Heater
3. Open control access panel.
4. Push in gas control knob slightly and turn clockwise to “OFF”. Do not force.
5. Close control access panel.
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
Troubleshooting / Honeywell #8420 Gas Control System
NOTE: Before troubleshooting the gas control system, be sure the external gas shutoff is in the “ON” position.
WARNING: REMOVE THE GLASS PANEL BEFORE PERFORMING ANY GAS CONTROL SERVICE WORK.
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
1. Spark ignitor will
not light
2. Pilot will not stay lit
after carefully following the lighting
instructions
3. Pilot lights, no gas
to burner, valve
knob ON, remote
switch (rocker
switch) ON
A. Defective or misaligned
electrode at the pilot
B. Defective ignitor (push but-
ton)
A. Defective pilot generator
(thermocouple)
B. Defective automatic valve
operator
A. Remote switch or wires
defective
B. Thermopile may not gener
ate sufficient voltage
Using a match, light pilot. If pilot lights, turn off pilot and
push the ignitor button again. If pilot will not light, check
gap at electrode and pilot - it should be 1/8” to have a
strong spark.
Push piezo ignitor button. Check for spark at electrode
and pilot. If there is no spark at the pilot, and electrode
wire is properly connected, replace ignitor.
Check pilot flame. It must impinge on the thermocouple
or thermopile. NOTE: This pilot burner assembly uses
both a thermocouple and a thermopile. The thermocou
ple operates the pilot flame. Tighten the thermocouple.
The thermopile operates the main valve (ON and OFF).
Clean and/or adjust pilot for maximum flame impingement on thermocouple and thermopile.
Turn valve knob to ‘Pilot’. Maintain flow to pilot; millivolt
meter should read greater than 10mV. If the reading
is okay and the pilot does not stay on, replace the gas
valve. NOTE: An interrupter block (not supplied) must be
used to conduct this test.
Check rocker switch and wires for proper connection.
Use jumper wires across terminals at rocker switch. If
burner lights, replace rocker switch. If okay, use jumper
wires across rocker switch wires at the valve; if burner
lights, wires are faulty or connections are bad.
-
1. Be sure wire connections from thermopile at gas valve
terminals are tight and thermopile is fully inserted into
pilot bracket.
-
4. Frequent pilot outage
30004177
C. Plugged burner orifice
D. Defective automatic valve
operator
A. Pilot flame may be too low
or high, (blowing or lifting),
causing the pilot to drop out
B. Possible blockage of the
vent terminal
2. One of the rocker switch wires may be grounded.
Remove rocker switch wires from valve terminals. If
burner now stays lit, trace rocker switch wiring from
ground. It may be grounded to the appliance or the
gas supply line.
3. Check the thermopile with a millivolt meter. Take read
ing at thermopile (“TP” and “TP/TH”) terminals of gas
valve. Should read 325 millivolts minimum while holding valve knob depressed in PILOT position and with
rocker switch OFF. Replace faulty thermopile if reading
is below specified minimum.
Check burner orifices for debris, and remove.
Turn knob to ON, place rocker switch to ON, millivolt meter should read greater than 10 mV. If the reading is okay
and the burner does not light, replace the valve.
Clean and/or adjust pilot flame for maximum flame impingement on thermocouple and thermopile.
Check the vent terminal for blockage.
27
-
Jefferson Direct Vent/Natural Vent Gas Heater
L
O
H
I
L
O
H
I
Fuel Conversion Instructions
WARNING! This conversion kit shall be installed
by a qualified service agency in accordance with
the manufacturer’s instructions and all applicable
codes and requirements of the authority having
jurisdiction. If the information in these instructions is not followed exactly, a fire, explosion
or production of carbon monoxide may result
causing property damage, personal injury or loss
of life. The qualified service agency is responsible for the proper installation of this kit. The
installation is not proper and complete until the
operation of the converted appliance is checked
as specified in the manufacturer’s instructions
supplied with the kit.
CAUTION: The gas supply shall be shut off prior
to disconnecting the electrical power, before proceeding with the conversion.
Cap
Lift Open
Hi/Lo
Knob
Center Screw
CO100
Fig. 52 Remove center screw from Hi-Lo knob.
7. Insert blue painted screw when converting to natural
gas and red painted screw when converting to LP.
8. Tighten screw, replace cap.
9. Remove the rear log bracket by removing the screw.
(fig. 53)
10. Remvoe the right and left log bracket assembly by
removing the two screws which hold the burner in
place. (Fig. 53)
11. Hold the burner at the right hand side and lidft to
clear the right burner leg. Then pull to the right to
clear the injectors on the left hand side.
12. Locate pilot. (Fig. 53)
13. Replace pilot orifice.
Remove Screws
Rear Log Bracket
Main
Gas Supply Inlet
Gas Line
Fig. 51 Attach the gas line to the left side of the valve.
Conversion Precautions
Before proceeding, turn control knob on valve to OFF
and turn gas supply OFF. Turn OFF any electricity that
may be going to the appliance.
Conversion Procedure
1. Remove stove front. Lift stove front up and then
swing bottom out and away to disengage from the
stove body. (Page 30, Fig. 59)
2. Swing open the swiveling latches at the top left and
right corners of the glass frame. (Page 31, Fig. 60)
3. Pull the top edge of the glass and frame assembly
away from the firebox face. Place the assembly out
of the way on a flat, padded surface such as a coun
ter protected by a towel.
4. Remove the logset from the firebox.
5. Remove cap from HI/Lo knob. This can be accom
plished by lifting the plastic cap off the screws. (Fig.
52)
6. Remove the screw from center of Hi/Lo knob with
small screwdriver turnign counterclockwise. (Fig. 52)
2828
ST226
-
Pilot
Left & Right Log
Bracket Assembly
ST350
Fig. 53 Remove rear log bracket and left and right log bracket
assembly.
Pilot Type 1
• Remove pilothood by lifitng up. (Fig. 54) NOTE:
Do not remove snap ring to remove pilot hood.
NOTE: It is not necessary to remove the pilot
tube for conversion.
-
• Remove pilot orifice with allen wrench. (Fig. 55)
• Install the conversion orifice.
• Reinstall pilot hood. Be sure to align hood with
index tab.
Pilot Type 2
• Loosen pilot hood by turning counterclockwise
using a 7/16” wrench. (Fig. 56) NOTE: You may
use penetrating oit to prevent pilot hood threads
from seizing up.
30004177
Pilot Hood
90°
Pilot
Bracket
CO105a
Fig. 54 Remove pilot hood.
Index Tab
Snap Ring
CO106a
Fig. 55 Remove pilot orifice.
Index
Marks
Pilot Bracket
Fig. 56 Remove pilot hood. (Your pilot may have a different
appearance.)
Allen Wrench
Pilot Hood
CO105
• Remove pilot orifice with needlenose pliers. (Fig.
57) NOTE: Use a wrench to hold pilot tube in
place while removing the orifice.
• Install the conversion orifice.
• Reinstall pilot hood and tighten until mark on pilot
hood aligns withmark on pilot bracket.
14. Remove injector orifices from left burner leg using
1/2” wrench. (Fig. 58)
15. Install conversion orifices. (Refer to Table 2)
NOTE: Be sure burner leg remains at a 90° angle to
firebox base after conversion.
Jefferson Direct Vent /Natural Vent Gas Heater
Pilot
Orifice
CO106b
Fig. 57 Remove pilot orifice.
16. Replace burner. Slide the burner in at an angle
with left side lower than the right side. slide the left
side onto the injectors, making sure the burner leg
remains at a 90° angle to the base. Lower the right
hand side down in to place. Make sure the burner is
as far left as possible and the injector shoulders are
inside the burner.
NOTE: It is very critical to keep the left burner leg,
which holds the injectors, at a 90° angle to the base.
(Fig. 58) This keeps the orifices aligned with the
tubes inside the burner. Failure to do so could affect
the flame appearance and performance of the unit.
17. Place conversion label on valve
18. Reinstall the irght and left log bracket assembly.
19. Reinstall rear log bracket.
20. Replace the logs.
21. Replace glass and stove front.
Conversion is complete.
Left Burner Leg
Injector Orifices
ST353a
Fig. 58 Remove and replace injector orifices.
30004177
Table 2. Injector Orifice Size Matrix
Conversion to LP Input (BTU/h)
Kit # Front Part # Rear Part # Minimum Maximum
30004180 #69 / .029” 30000513 #54 / .055” 20000130 20,000 28,000
29
Jefferson Direct Vent/Natural Vent Gas Heater
�
Maintenance
Your Jefferson Gas Heater will provide years of service
with minimal upkeep. The following procedures will help
ensure that your stove continues to function properly.
Annual System Inspection
Have the entire heater and venting system inspected
annually by a qualified gas technician. Replace any
worn or broken parts.
Logset and Burner /
Cleaning and Inspection
Cleanliness is critical to the proper function of the
heater. The logset and burner must all be kept free of
dust and unobstructed by debris. Inspect these areas
before each use and clean as necessary.
1. Turn the burner OFF and let the heater cool com
pletely before cleaning.
2. Lift the Stove Front up and then swing the bottom
out to disengage it from the heater shell. (Fig. 59)
3. Carefully remove the glass and frame assembly and
place it out of the way on a flat, padded surface such
as a counter protected by a towel.
4. Carefully inspect the Logs for damage. Contact your
local dealer if any damage is evident.
5. Use a soft bristled brush to sweep dust or debris
from the Logs, Pilot and Burner. Use care as the
logs are fragile and susceptible to damage.
6. Replace the glass panel and frame assembly.
7. Replace the Stove Front.
-
Cleaning the Glass
WARNING: Allow the glass to cool completely before attempting to clean.
It will be necessary to clean the glass periodically. During start-up, condensation, which is normal, forms on
the inside of the glass and causes lint, dust and other
airborne particles to cling to the glass surface. Also
initial paint curing may deposit a slight film on the glass.
It is therefore recommended that the glass be cleaned
two or three times with a non-ammonia household
cleaner and warm water (we recommend gas fireplace
glass cleaner). After that the glass should be cleaned
two or three times during each heating season depending on the circumstances present.
Clean glass after first two weeks of opera
tion.
-
Glass Replacement
Care of Cast Iron
An occasional dusting with a dry rag will help keep the
painted surfaces looking new. Use high-temperature
stove paints, available through your local dealer, to
touch-up areas as needed. Clean areas to be painted
with a wire brush and be sure to cover the logs, burner
and valve assembly, glass and frame assembly. Apply
the paint sparingly; two light coats of paint will give better results than a single heavy coat.
Clean porcelain enamel surfaces with a soft, damp
cloth. Do not use abrasive cleaning agents. If necessary, use only a cleaning agent formulated especially
for use on porcelain enamel surfaces.
CAUTION
TURN THE PILOT OFF BEFORE PAINTING.
ALLOW THE HEATER TO COOL COMPLETELY
BEFORE PAINTING.
3030
Replace glass only with CFM Corporation approved
parts. Refer to Page 33 for Replacement Parts. Refer to
Figures 59, 60 and previous instructions for removal of
the damaged glass frame.
ST229a
Fig. 59 Remove the Stove Front.
30004177
ST208a
Fig. 60 Release the latches to release the glass frame.
Gasket Replacement
The Jefferson Gas Heater uses a ‘tadpole’ type gasket
to seal between the glass panel and the frame. In time,
this gasket can become brittle and compressed and
should be replaced. New gasket is available from your
dealer.
Shut off the gas supply and allow the stove to cool.
Wear safety goggles and a dust mask.
1. Remove the Front, Glass Frame and Glass Panel.
(Figs. 59 & 60) Remove the old gasket. Use a
razor blade to separate the glass and gasket from
the frame, and to clean the glass of any remaining
cement or bits of gasket. Use a cold chisel if necessary.
2. Determine the correct length of gasket by laying it
out around the edge of the glass. Allow an extra 1
- 2” (25-50mm). Mark the spot to be cut. Use a utility
knife.
3. Starting on a long edge, remove about 6” of the pro
tective paper strip and apply the flat adhesive face
of the gasket around the outside-facing edge of the
panel. Continue around the panel, applying a bout 6”
at a time and being careful to not stretch the material. Do not overlap the gasket ends. (Fig. 61)
4. Apply a thin bead of high temperature silicone
rubber sealant along the inside corner of the glass
frame, all around the perimeter. Place the flat
gasketed side of the glass panel back into the steel
frame. Pinch the rounded inside-facing gasket material to bulk it up.
5. Replace the glass frame and front panel as previ
ously described.
-
Jefferson Direct Vent /Natural Vent Gas Heater
Inspect the Vent System Annually
Have the vent system inspected annually by a qualified technician. Shut off the main gas supply before
inspecting the system. Both the inner exhaust pipe and
the outer combustion supply pipe must be checked to
confirm that they are unblocked and in good condition.
Check the Gas Flame Regularly
To ensure that the stove is operating properly, check
the flames periodically to confirm that they match Page
24. The flames will be blue during the first 15-20 minutes of operation, and will gradually turn to yellow after
that.
Do not use your stove if the flame pattern differs from
that shown here. Contact your CFM Corporation dealer
or a qualified technician for help.
Stove Disassembly
If there is ever a need to remove the firebox assembly from the stove shell, support the firebox with solid
stands about 6” (152 mm) tall under the left and right
outer edges of the firebox base. Do not set the firebox
assembly directly on the floor; this can damage the
control valve and/or the gas lines from the valve to the
firebox.
Before removing the firebox from the shell, disconnect
the on/off switch wires from the valve. If the assembly
includes the optional fan, disconnect the fan rheostat.
If the installation includes a wall thermostat, disconnect
-
the thermostat leads from the valve.
Disconnection and reconnection to the gas line should
only be done by a qualified gas service technician.
Upon reinstallation, the vent system must be sealed to
the firebox as shown in the installation section, Page
14. Also be sure the logs are placed in the firebox correctly, as shown on Page 21.
ST179
Fig. 61 Wrap the gasket material around the outside edge of
the glass.
30004177
31
Jefferson Direct Vent/Natural Vent Gas Heater
FAN JUNCTION BO X
FA
N
POWER
CORD
Strain Relief
Chassis Ground
BL
K
GRN
GRN
WHT
ON / OFF
Rheostat
Chassis
Ground
RHEOSTAT / SNAPSTAT
BOX
Snapstat
BLK
B
L
K
BLK
BLK
BL
K
WHT
MOTOR
SNAPSTAT
ON/OFF
RHEOSTAT
WHT
WHT
BLK
BLK
BLK
GRN
BLK
OFF
ON
Therm
opile
Black
Black
Millivolt
Gas Valve
TP/TH
TP
TH
Thermostat
(Optional)
Therm
opile
Black
Black
TP/TH
TP
TH
Drafthood Adapter
Harness
Remote Wall Switch or
ON/OFF Rocker Switch
TH
TP
TH
TP
Gas
Valve
Wiring Diagrams
On/Off Switch
Wiring
ST124b
Optional Thermostat
Wiring
Fig. 62 On/off switch and optional thermostat circuit.
NOTE: IF ANY OF THE ORIGINAL WIRE, AS SUP-
PLIED WITH THE APPLIANCE, MUST BE REPLACED, IT MUST BE REPLACED WITH TYPE
SF-2, 200°C WIRE OR ITS EQUIVALENT.
ST943
Fig. 63 Draft Hood Adapter (FSDHAG) wiring. Used on
RN/RP models only.
ST124c
ST153
Schematic Diagram
ST236
Fig. 64 Fan circuit.
3232
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
1a
1b
1c
1d
1e
CEMENT
4
5
2
10
9
11
37
17
18
29
30
12
8
31
32
15
16
33
34
21
22 23
24
25
27
26
36
19
35
3
6
7
14
20a,b
40
CFM Corporation reserves the right to make changes in design, materials, specifications, prices and discontinue colors and products at any time,
without notice.
Jefferson Direct Vent/Natural Vent Gas Heater
Model: JDVBRN
Ref. Description JDVB
1. Gas Log Set 20002182
1a. Log, Back 20002183
1b. Log, Left Upper 20002187
1c. Log, Right Upper 20002186
1d. Log, Left 20002185
1e. Log, Right 20002184
2. Lava Rocks Burner 57897
3. Top 30000680
4. Grille 30000685
5. Screen,Grille 30000665
6. Left End 30000682
30004177
33
Jefferson Direct Vent/Natural Vent Gas Heater
Jefferson Direct Vent/Natural Vent Gas Heater
Model: JDVBRN
Ref. Descripción JDVB
7. Right End 30000681
8. Front 30000683
9. Glass 20002120
10. Glass Frame Assembly 20002117
11. Gasket, Glass - Med. Knit 1203702
12. Door, Control 30000686
13. Door Magnet (not shown) 1408818
14. Leg 30000679
15. Front Handle Assembly 5004240
16. Handle Damper - Maplewood - Blk 1600664
17. Burner Housing Assembly NG/LP 20002214
18. Grate, Burner 20002167
19. Manifold Assembly 20003739
20a. Valve - Nova SIT820.662 RN 20010563
20b. Valve - Nova SIT820.653 RP 20010645
21. Pilot Assembly 3-Way N/DV RN 0.199.706 10002264
Pilot Assembly 3-Way N/DV RP 0.199.703 10002265
22. Thermopile 24” 53373
7531137
23. Electrode Ignitor w/cable SIT24 10001297
24. Pilot Top Convertible 10002266
25. Thermopile 18” RS 51827
7533113
26. Nut Electrode SIT #0.974.144 57886
27. Tubing Pilot w/Fittings 1/8 x 24” 10001296
28a. Orifice Hood - #69 - Front - LP (not shown) 30000513
28b. Orifice Hood - #54 - Front - NG (not shown) 20000130
28c. Orifice Hood - #54 - Rear - LP (not shown) 20000130
28d. Orifice Hood - #44 - Rear - NG (not shown) 30000334
29. Wiring Harness - FSDV32RN/JDV 10002582
30. Switch ON/OFF - RN/RP Models 30000874
31. Bracket, Right Log 20002166
32. Bracket, Left Log 20002165
33. Gasket, Base Pan - JDV 20002282
34. Gasket, Base Pan Inner 20002566
35. Heat Exchanger Door Gasket 1203687
36. Sensor 2450 CMG-8184-0032 10002013
37. Furnace Cement 1206122
38. Switch Bracket (not shown) 53821
39. 2
40. Ignitor Piezo w/Nut SIT 52464
41. Bracket Piezo Ignitor (not shown) 20010876
42. Relief Doors 30000060
¹⁄₄” Restrictor (not shown) 1409170
Fuel Conversion Kits
Conversion Kit, NG to LP - JDVBRN Kit # 30004180
3434
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
Optional Accessories
Fan Kits
FK28 Fan
The FK28 fan helps distribute heated air from within
the firebox out into the room. The fan is controlled by a
snapstat that turns power on and off as the firebox temperature rises above and falls below a preset temperature. A rheostat provides for variable fan speeds.
Specifications
115 Volt / 60Hz / .75 Amps
Maintenance
The fan itself does not require regular maintenance,
however, periodic cleaning of the fan and the surrounding area is required.
Installation
Refer to Page 14 for installation instructions.
Remote Controls
The remote control allows you to turn the heater on or
off from anywhere in the room. Refer to Page 32 for
wiring diagrams. These remote controls are for use with
RN/RP models.
Model Functions Controlled
RC1 ON/OFF
RC2 ON/OFF and Temperature
IMTFK Wall mounted thermostat control
Decorative Rings
7” brass or charcoal gray rings are available to add a
decorative touch to the exposed stove pipe.
Model Description
7FSDRG/4 7” Charcoal Gray Rings (4)
7FSDRP/4 7” Polished Brass Rings (4)
30004177
35
Jefferson Direct Vent/Natural Vent Gas Heater
3636
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
30004177
37
Jefferson Direct Vent/Natural Vent Gas Heater
3838
30004177
Jefferson Direct Vent /Natural Vent Gas Heater
CFM CORPORATION WARRANTY FOR ALL CENTURY GAS PRODUCTS
TWO YEAR LIMITED WARRANTY
This Warranty gives you specific legal rights and you may also have other rights that vary in each State or Province.
1. CFM Corporation (hereafter referred to as CFM) warrants to the original consumer/purchaser that, subject to rea
sonable and necessary maintenance, your new gas appliance (exclusive of exterior paint, pipe and accessories)
will be free from defects in materials and workmanship for two years from the date of purchase and while under
original owner.
2. This warranty is extended only to the original retail purchaser.
3. This warranty covers only the cost of part(s) required to restore this heater to proper operating condition. Warranty
part(s) MUST be obtained through Authorized dealers/distributors of CFM who will provide original factory replacement parts. Failure to use original factory replacement parts voids this warranty.
4. The heater MUST be installed by a qualified installer in accordance with all local codes and instructions furnished
with the unit.
5. This warranty is effective only as to new gas appliances which have not been altered, changed, repaired or treated
since shipment from the factory, unless such modifications have been authorized in writing by CFM.
6. This warranty does not apply to parts:
i) that fail or become damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by
improper installation.
ii) that have been operated in an atmosphere contaminated by chemicals damaging to the product (e.g. chlorine,
fluorine)
iii) that have been subjected to dampness or condensation for prolonged periods, or
iv) that have been damaged due to water or weather.
7. Travel, diagnostic cost, labor, transportation and any and all such other costs related to repairing a defective heater
will be the responsibility of the owner.
8. To make claim under this warranty, the original consumer purchaser shall notify CFM at 1-800-668-5323, within ten
(10) days of the discovery of the alleged defect and provide proof of purchase
9. CFM shall, at its option, repair or replace the defective parts, after inspection and determination of the defect. The
purchaser shall be liable for all costs and incidental expenses in respect of shipping, labor or transportation for war
ranty service.
10. CFM shall not be liable for any incidental, consequential, special or indirect damages arising out of a defect or a
breach of this warranty and includes:
i) downdrafts or spillage caused by environmental conditions such as nearby trees, hills, buildings, rooftops;
ii) inadequate ventilation or negative air pressure caused by mechanical systems such as furnaces, fans, clothes
dryers, etc.
Some States and Provinces do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation or exclusion may not apply to you.
-
-
NOTE:
Glass doors are not warranted for breakage due to misuse or accident. Brass parts should be cleaned with a damp,
soft cloth only. Brass cleaners should not be used. Masonry cleaners and mortar mix may corrode the brass finish.
CFM will not be responsible for, nor will it warrant any brass parts that are damaged by external chemicals or downdraft conditions.
CFM Corporation
Toll Free: 1-800-668-5323
www.cfmcorp.com
KEEP THIS WARRANTY
SERIAL # MODEL # DATE PURCHASED
30004177
39
Efficiency Ratings
Model EnerGuide Ratings
Fireplace Efficiency (%)
JDVBRN 60.7
JDVBRP 60.7
CFM Corporation
2695 Meadowvale Blvd. • Mississauga, Ontario, Canada L5N 8A3
800-668-5323 • www.cfmcorp.com
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