Lennox SLO183BF101/114V42, SLO183BF135/150V60, SLO183BR101/114V42, SLO183BR135/150V60 Installation Instructions Manual
Page 1
506905−01
*P506905-01*
04/12
*2P0412*
E 2012 Lennox Industries Inc.
Dallas, Texas, USA
Front
Flue Model
Shown
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
IMPORTANT
This unit must be serviced annually by a licensed
professional technician, or equivalent.
WARNING
Improper installation, adjustment, alteration, service, or maintenance can cause injury or property
damage. Refer to this manual. For assistance or
additional information, consult a licensed professional installer, or equivalent, or service agency.
WARNING
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
CAUTION
When venting this appliance, keep vent terminal free
of snow, ice and debris.
CAUTION
As with any mechanical equipment, personal injury
can result from contact with sharp sheet metal
edges. Be careful when you handle this equipment.
INSTALLATION
INSTRUCTIONS
SLO183BV SERIES UNITS
OIL UNITS
506905−01
04/2012
Table of Contents
General 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping & Packing List 1. . . . . . . . . . . . . . . . . . . . . . .
SLO183BV Unit Dimensions 2. . . . . . . . . . . . . . . . . . .
SLO183BV Start−Up & Performance Check List 2. .
SLO183BV Unit Parts Arrangement 3. . . . . . . . . . . . .
SLO183BV AFG Burner Parts Arrangement 3. . . . .
Requirements 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combustion and Ventilation Air 5. . . . . . . . . . . . . . . . .
Locate & Level Unit 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
Nozzle Adjustments 7. . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor Coil Placement 8. . . . . . . . . . . . . . . . . . . . . . . .
Venting 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flue Connections 10. . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply & Return Air Plenums 11. . . . . . . . . . . . . . . . .
Oil Supply Line Sizing 11. . . . . . . . . . . . . . . . . . . . . . .
Oil Supply Line and Filter Connections 13. . . . . . . . .
Leak Check 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Wiring 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Control (A54) 17. . . . . . . . . . . . . . . . . . . . . . . .
Start−Up & Adjustment 19. . . . . . . . . . . . . . . . . . . . . . .
Service 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GeniSyst Primary Control 22. . . . . . . . . . . . . . . . . . .
Heating Sequence 24. . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General
These instructions are intended as a general guide and do
not supersede local codes in any way. Only licensed professional technicians, or equivalent, can install and service
the Dave Lennox Signature
®
Collection SLO183BV oil furnaces. In Canada, refer to CSA B139 for recommended
installation procedures. Consult authorities who have jurisdiction before installation.
CAUTION
Never burn garbage or paper in the heating system.
Never leave papers near or around the unit.
Shipping & Packing List
1 − Assembled oil furnace
1 − Barometric draft control
1 − Oil nozzle (used with SLO183BV−114 and −150 only)
Check the components for shipping damage. If you find any
damage, immediately contact the last carrier.
Litho U.S.A.
Page 2
SLO183BV Unit Dimensions − Inches (mm)
FLUE CONNECTION
SLO183BR101/114V42
1
(25)
2−1/2
(64)
RETURN
AIR
OPENING
SUPPLY
AIR
OPENING
OIL PIPING INLET
(Both Sides)
ELECTRICAL INLETS
(Right Side Only)
TOP VIEW
SIDE VIEW FRONT VIEW
A
E
D
E
3/4
(19)
FLUE CONNECTION
SLO183BF101/114V42 &
SLO183B5F135/150V60
(On Heat Exchanger)
AIR FLOW
AIR FLOW
3/4
(19)
3/4
(19)
3/4
(19)
1-1/2
(38)
3-1/4
(83)
5−1/4
(133)
B
C
FG
SIDE
FLUE OUTLET
CENTERING HOLE
(Field−Fabricate
Either Side)
TOP FLUE
OUTLET
Model No.
A B C D E x F (Supply) E x G (Return)
in. mm in. mm in. mm in. mm in. mm in. mm
SLO183BF101/114V42 19-1/2 495 37 940 52−1/2 1334 27 686 18 x 21 457 x 533 18 x 16 457 x 406
SLO183BR101/114V42 19-1/2 495 37 940 52−1/2 1334 27 686 18 x 21 457 x 533 18 x 16 457 x 406
SLO183BF135/150V60 22-1/2 572 37 940 52−1/2 1334 27 686 21 x 21 533 x 533 21 x 16 533 x 406
SLO183BR135/150V60 22-1/2 572 37 940 52−1/2 1334 27 686 21 x 21 533 x 533 21 x 16 533 x 406
SLO183BV Start−Up & Performance Check List
Filter Clean & Secure?
Supply Voltage
Electrical Connections Tight?
Job Name
Job Location
Installer
Unit Model No.
Oil Pump Pressure [recommended minimum 140 psi]
Job No.
City
City
Serial No.
Date
State
Serviceman
Draft Reading (recommended .03−.04 inches w.c.)
Flue Connections Tight?
HEATING SECTION
THERMOSTAT
Calibrated? Heat Anticipator Properly Set? Level?
Blower Motor Amps
Blower Motor H.P.
Piping Connections Tight?
Vent Clear?
State
Temperature RiseExternal Static Pressure
Net Stack Temp
Burner Model No.
Serial Number
All Valves Open?
PROPER DRAFT
% CO
2
% O
2
ppm CO
Stack Draft Overfire Draft
Ambient Temp
Smoke Test
Page 3
SLO183BV Unit Parts Arrangement
Figure 1
Limit Switch
ST9103A Control −− A15
BeckettR AFG Burner
Blower
(Variable Speed Motor
on Other Side)
Observation Port
Clean−Out Port
Flue Opening
Heat Exchanger
Blower Control
A54
(Not Visible −−
Located on
blower housing)
Clean−Out Port
SLO183BV AFG Burner Parts Arrangement
ESCUTCHEON
PLATE
MAIN
HOUSING
HEAT
SHIELD
BURNER CONTROL
(with Reset Button)
OIL DELAY
VALV E
AIR TUBE WITH
ELECTRODE
ASSEMBLY AND
NOZZLE INSIDE
BLOWER WHEEL
WITH AIR GUIDE
(Inside housing)
COPPER OIL
TUBE
BLOWER
MOTOR
IGNITER
AIR BAND AND
AIR SHUTTER
Figure 2
FUEL PUMP
Page 4
Requirements
WARNING
Product contains fiberglass wool.
Disturbing the insulation in this product during
installation, maintenance, or repair will expose you
to fiberglass wool dust. Breathing this may cause
lung cancer. (Fiberglass wool is known to the State
of California to cause cancer.)
Fiberglass wool may also cause respiratory, skin,
and eye irritation.
To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown below, or contact your
supervisor.
Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379−9900
Installation of Lennox oil−fired furnaces must conform with
the National Fire Protection Association Standard for the
Installation of Oil Burning Equipment, NFPA No. 31, the
National Electrical Code, ANSI/NFPA No.70 (in the
U.S.A.), CSA Standard CAN/CSA−B139 (in Canada),
Installation Code for Oil Burning Equipment, the Canadian
Electrical Code Part1, CSA 22.1 (Canada), the recommendations of the National Environmental Systems Contractors Association and any state or provincial laws or local ordinances. Authorities having jurisdiction should be
consulted before installation. Such applicable regulations
or requirements take precedence over general instructions
in this manual.
Chimneys and chimney connectors must be of the type and
construction outlined in section 160 of NFPA No. 31.
Air for combustion and ventilation must conform to standards outlined in section 140 of NFPA No. 31 or, in Canada,
CSA Standard B139. When installing SLO183B units in
confined spaces such as utility rooms, two combustion air
openings are required. Dimensions of combustion air
openings are shown in table 1. One opening shall be below
burner level and the other opening shall be no more than 6"
(152 mm) from the room’s ceiling.
The combustion air opening should provide a minimum free
area one-half square inch per 1,000 Btu per hour input. This
combustion air should be brought into the area containing the
furnace below the level of the furnace burner.
IMPORTANT
An opening to the outside for combustion air is
strongly recommended, especially in new homes.
Refer to table 1 or the unit plate for specific combustion air opening dimensions.
Table 1
Combustion Air Opening Dimensions
Model No.
Combustion Air Opening
Dimensions (2 required)
SLO183BF101/114V
SLO183BR101/114V
10" X 20" (254 mm X 508 mm)
SLO183BF135/150V
SLO183BR135/150V
11" X 22" (279 mm X 559 mm)
This unit is approved for use on combustible flooring and for
clearances to combustible material as listed on unit rating
plate and in table 2. Unit service and accessibility clearances
take precedence over fire protection clearances.
Table 2
Installation Clearances
Clearances
All Unit Sizes
inches (mm)
top of plenum and duct 2 (51)
plenum sides 3 (76)
sides* 6 (152)
rear 24 (610)
front 4 (102)
flue pipe measured vertical**
(measured from above)
9 (229)
NOTE−Service access clearance must be maintained.
*Clearance to allow inspection of furnace and flue connector
shall be provided. 24" (610 mm) at rear and on one side of furnace should
be allowed for cleaning and service of the blower.
**Minimum clearance shown for flue pipe may be reduced by using special
protection as provided by local building codes and the National Fire
Protection Association Standards and CSA 189.
NOTE − When service clearances are greater than fire
protection clearances, service clearances take precedence.
Obtain a temperature rise within the range listed in table 8
in the Start-Up section of this manual.
When installed, furnace must be electrically grounded in
accordance with local codes or, in the absence of local
codes, with the current National Electric Code, ANSI/NFPA
No. 70, or Canadian Electric Code (CEC) if an external
electrical source is utilized.
Field wiring connection with unit must meet or exceed
specifications of type T wire and withstand a 63_F (17_C)
temperature rise.
Notice to Home Owner
This furnace is equipped with safety devices that protect
you and your property. If one or more of these devices is
activated, furnace operation will stop. If your home is left
unattended for an extended period of time, equipment operation must be checked periodically. If this is not possible,
the water supply to the house should be shut off and the
pipes should be drained. This will prevent problems associated with a NO HEAT condition (frozen pipes, etc.)
Page 5
Combustion and Ventilation Air
Homes built with energy conservation in mind use tight
construction practices. These houses are sealed so well
that it becomes necessary to provide a means of bringing in
air from outside for combustion. Also, exhaust fans, appliance vents, chimneys and fireplaces force additional air
that could be used for combustion out of the house. Unless
outside air is brought into the home for combustion, negative pressure (pressure outside is greater than inside pressure) will build to the point that a down draft can occur in the
furnace vent pipe or chimney. Combustion gases enter the
living space creating a potentially dangerous situation. Negative pressure may also interfere with proper combustion,
causing sooting within the heat exchanger.
The importance of the previous paragraph cannot be overstated. Users may inadvertently block fresh air intakes after
installation.
In the absence of local codes concerning air for combustion and ventilation, the following section outlines guidelines and recommends procedures for operating oil furnaces in a manner that ensures efficient and safe
operation. Special consideration must be given to combustion air needs as well as requirements for exhaust vents
and oil piping.
Combustion Air Requirements
CAUTION
Insufficient combustion air can cause headaches,
nausea, dizziness or asphyxiation. It will also cause
excess water in the heat exchanger resulting in rusting and premature heat exchanger failure. It can also
cause property damage.
All oil-fired appliances require air to be used for the combustion process. If sufficient amounts of combustion air are
not available, the furnace or other appliance will operate in
an inefficient and unsafe manner. Enough air must be provided to meet the needs of all fuel-burning appliances, as
well as appliances such as exhaust fans which force air out
of the home. When fireplaces, exhaust fans, or clothes dryers are used at the same time as the furnace, much more
air is required to ensure proper combustion and to prevent
a down-draft situation. Insufficient amounts of air also
cause incomplete combustion which can result in sooting.
Requirements for providing air for combustion and ventilation depend largely on whether the furnace is installed in an
unconfined or confined space.
Unconfined Space
An unconfined space is an area such as a basement or
large equipment room with a volume greater than 50 cubic
feet (1.4 cubic meters) per 1,000 Btu (293 W) per hour of
the combined input rating of all appliances installed in that
space. This space also includes adjacent rooms which are
not separated by a door. Though an area may appear to be
unconfined, it might be necessary to bring in outdoor air for
combustion if the structure does not provide enough air by
infiltration. If the furnace is located in a building of tight
construction with weather stripping and caulking around
the windows and doors, follow the procedures outlined for
using air from the outside for combustion and ventilation.
Confined Space
A confined space is an area with volume less than 50 cubic
feet (1.4 cubic meters) per 1,000 Btu (293 W) per hour of
the combined input rating of all appliances installed in that
space. This definition includes furnace closets or small
equipment rooms.
When the furnace is installed so that supply ducts carry air
circulated by the furnace to areas outside the space containing the furnace, the return air must be handled by ducts
which are sealed to the furnace casing and which terminate
outside the space containing the furnace. This is especially
important when the furnace is mounted on a platform in a
confined space such as a closet or small equipment room.
Even a small leak around the base of the unit at the platform
or at the return air duct connection can cause a potentially
dangerous negative pressure condition. Air for combustion
and ventilation can be brought into the confined space either from inside the building or from outside.
Air from an Adjacent Space
If the confined space housing the furnace adjoins space
categorized as unconfined, air can be brought in by providing two permanent openings between the two spaces.
Each opening must have a minimum free area of 1 square
inch
(6.4 square centimeters) per 1,000 Btu (293 W) per
hour of the total input rating of all fuel-fired equipment in the
confined space. Each opening must be at least 100 square
inches (614.5 square centimeters). One opening shall be
within 12" (305 mm) of the top of the enclosure and one
opening within 12" (305 mm) of the bottom (See figure 3).
Equipment In Confined Space
All Air From Inside
Chimney or
Oil Ven
t
Water
Heater
Openings
(To Adjacent Room)
Figure 3
NOTE−Each opening shall have a free area of at least 1 square inch
(6.4 square centimeters) per 1,000 Btu (293 W) per hour of the total
input rating of all equipment in the enclosure, but not less than 100
square inches
(614.5 square centimeters).
Oil
Furnace
Page 6
Air from Outside
If air from outside is brought in for combustion and ventilation, the confined space shall be provided with two permanent openings. One opening shall be within 12" (305 mm)
of the top of the enclosure and one within 12" (305 mm) of
the bottom. These openings must communicate directly or
by ducts with the outdoors or spaces (crawl or attic) that
freely communicate with the outdoors or indirectly through
vertical ducts. Each opening shall have a minimum free
area of 1 square inch (6.4 square centimeters) per 4,000
Btu (1172 W) per hour of total input rating of all equipment
in the enclosure. (See figure 4.) When communicating with
the outdoors through horizontal ducts, each opening shall
have a minimum free area of 1 square inch (6.4 square
centimeters) per 2,000 Btu (586 W) per total input rating of
all equipment in the enclosure (See figure 5).
Ventilation
Louvers
(For unheated
crawl space)
Outlet
Ai
r
Equipment In Confined Space
All Air From Outside
(Inlet Air from Crawl Space and Outlet Air to
Ventilated Attic)
NOTE−The inlet and outlet air openings shall each have a free area of
at least one square inch (6.4 square centimeters) per 4,000 Btu (1172
W) per hour of the total input rating of all equipment in the enclosure.
Ventilation Louvers
(Each End Of Attic)
Water
Heater
Inlet
Air
Chimney or
Oil Vent
Figure 4
Oil
Furnace
When ducts are used, they shall be of the same cross−sectional area as the free area of the openings to which they
connect. The minimum dimension of rectangular air ducts
shall be no less than 3" (76 mm). In calculating free area,
the blocking effect of louvers, grilles, or screens must be
considered. If the design and free area of protective covering is not known for calculating the size opening required, it
may be assumed that wood louvers will have 20 to 25 percent free area and metal louvers and grilles will have 60 to
75 percent free area. Louvers and grilles must be fixed in
the open position or interlocked with the equipment so that
they are opened automatically during equipment operation.
Equipment In Confined Space
All Air From Outside
Outlet Air
Inlet Air
Water
Heate
r
Chimney
Or Oil
Vent
Figure 5
NOTE−Each air duct opening shall have a free area of at least one
square inch (6.4 square centimeters) per 2,000 Btu (586 W) per hour
of the total input rating of all equipment in the enclosure. If the equipment room is located against an outside wall and the air openings
communicate directly with the outdoors, each opening shall have a
free area of at least one square inch (6.4 square centimeters) per
4,000 Btu (1172 W) per hour of the total input rating of all other equipment in the enclosure.
Oil
Furnace
CAUTION
Combustion air openings in the front of the furnace
must be kept free of obstructions. Any obstruction
will cause improper burner operation and may result
in a fire hazard or injury.
CAUTION
The barometric draft control shall be in the same atmospheric pressure zone as the combustion air inlet
to the furnace. Deviation from this practice will cause
improper burner operation and may result in a fire
hazard or injury.
Locate & Level the Unit
The compact design of this furnace makes it ideal for a
basement or utility room installation. Choose a central
location for the furnace so that supply air ducts approximately the same length. This will allow each room to receive the proper amount of heat. The furnace should be
placed within 10 feet of the chimney, so that the flue connection to the chimney will be of minimum length and have
a minimum number of elbows.
1 − Set the unit in desired location keeping in mind the
clearances listed in table 2. Also keep in mind oil supply connections, electrical supply, flue connections
and sufficient clearance for installing and servicing
unit.
Page 7
2 − Level the unit from side−to−side and from front−to−rear.
If the furnace is not level, place fireproof wedges or
shims between the low side of the furnace and the
floor. Make sure the weight of the furnace is distributed
evenly on all four corners. Strain on sides of cabinet
may occur if furnace weight is not evenly distributed.
This strain can cause cracking and popping noises.
Adjustments
Neither the nozzle setting nor the air adjustments are factory set. The furnace is fire−tested and the limit control is
checked to make sure it functions properly; no factory settings are made. During installation, the furnace must be adjusted to ensure proper operation. The installing dealer/
contractor must have and use proper test equipment in
order to correctly adjust the oil furnace. Proper testing
equipment is required to ensure correct operation of the
unit. The use of test equipment is more critical than ever
due to tighter tolerances needed to keep the furnace operating efficiently.
Among the required test equipment for an oil furnace, the
proper combustion test kit should contain the following:
D Draft gauge
D CO
2
or O2 Analyzer
D Smoke tester
D Pressure gauge
D High temperature thermometer
D Oil vacuum gauge
D Beckett T−501 or Z−2000 nozzle gauge
D Knowledge of proper test equipment operation
CAUTION
Improper nozzle and/or air adjustment of this unit
may result in sooting problems. Refer to the following section for correct adjustment procedures.
Nozzle Adjustment
Proper adjustment of the nozzle assembly is critical. Before
the flue pipe and oil lines are installed, the nozzle assembly
must be checked for proper depth and alignment. You must
remove the entire burner assembly (not just the nozzle) from
the furnace to check the nozzle depth and alignment. The
smaller sized firing nozzle has been factory−installed. This
should be verified by the installer. A larger nozzle has been
provided in the bag assembly for use with SLO183BV114
and 150 units. Inspect the spark transformer leads also to ensure they are still attached to the electrodes.
The burner assembly is attached to the vestibule panel by
three nuts. Slots are provided in the mounting flange for removing the burner assembly from the vestibule. Loosen the
nuts and turn the whole burner assembly clockwise (figure
6) to remove the entire burner assembly from the furnace.
There is adequate wire to remove the burner without discon-
necting wires. Once removed, turn the burner around in the
vest panel area.
Figure 6
SLO183BV Series Burner Removal
First, loosen three nuts which
attach burner to vest panel.
Next, rotate burner clockwise
on slots then pull toward you.
To correctly check and adjust the nozzle depth and alignment, use the Beckett T−501 or Z−2000 gauge.
To check the oil nozzle depth, insert the small end of the
gauge into the end of the cone and measure from the flat of
the end cone to the face of the nozzle. When nozzle depth
is correct, the tip of the nozzle should just touch the end of
the gauge. Refer to the illustration sheet provided with the
gauge. Note that the scale side of the gauge is not used for
this purpose. If necessary, loosen the escutcheon plate securing screw and slide the entire nozzle assembly forward
or backward within the air tube (figure 7). Re−secure escutcheon plate screw when adjustment is completed.
To check nozzle alignment, again insert the small end of
gauge into the end cone and measure the nozzle and
electrode alignment against the center lines marked on
the gauge (again refer to enclosed illustration sheet). If
the nozzle is not centered, but found to be too far left or
right, a new nozzle assembly will need to be ordered. Do
not attempt to adjust by bending the 90 degree elbow in
the oil line.
Take care to properly re−install burner assembly when
nozzle adjustment has been completed.
Figure 7
Beckett Oil Burner Nozzle Adjustment
Burner must be removed from
furnace for this procedure.
1
2
T−501 Gauge
Escutcheon Plate
To Adjust Nozzle
1−Loosen escutcheon plate screw.
2−Slide entire nozzle/electrode assembly back and forth inside air
tube until nozzle just touches gauge.
Page 8
Indoor Coil Placement
In cooling / heat pump applications, Lennox recommends that
the indoor coil be installed at least 4 inches above the top of the
furnace cabinet to allow proper airflow. If coil cabinet does not
provide proper clearance, use field−fabricated transition.
Venting
WARNING
Combustion air openings in front of the furnace must
be kept free of obstructions. Any obstruction will
cause improper burner operation and may result in
a fire hazard.
WARNING
The barometric draft control shall be in the same atmospheric pressure zone as the combustion air inlet
to the furnace. Deviation from this practice will cause
improper burner operation and may result in a fire
hazard.
CAUTION
Do not store combustible materials near the furnace
or supply air ducts. The material (such as paint, motor oil, gasoline, paint thinner, etc.) may ignite by
spontaneous combustion creating a fire hazard.
WARNING
This furnace is certified for use with type L" vent.
B" vent must not be used with oil furnaces.
Prior to installation of unit, make a thorough inspection of the
chimney to determine whether repairs are necessary. Make
sure the chimney is properly constructed and sized according to the requirements of the National Fire Protection Association. The smallest dimensions of the chimney should be
at least equal to the diameter of the furnace vent connector.
Make sure the chimney will produce a steady draft sufficient
to remove all the products of combustion from the furnace. A
draft of at least .04" w.c. (9.9 Pa) is required during burner
operation.
1 − Local building codes may have more stringent installa-
tion requirements and should be consulted before
installation of unit.
2 − The vent connector should be as short as possible to
do the job.
3 − The vent connector should not be smaller than the out-
let diameter of the vent outlet of the furnace.
4 − Pipe should be at least 24 gauge galvanized.
5 − Single wall vent pipe should not run outside or through
any unconditioned space.
6 − Chimney should extend 3 feet (0.9 m) above highest
point where the vent passes through the roof, and 2
feet (0.6 m) higher than any portion of a building within
a horizontal distance of 10 feet (3 m).
7 − The vent must not pass through a floor or ceiling.
Clearances to single wall vent pipe should be no less
than 6" (152 mm); more if local codes require it.
8 − The vent may pass through a wall where provisions
have been made for a thimble as specified in the Standards of the National Board of Fire Underwriters. See figure 8.
Wall Thimble
Figure 8
Thimble
Vent Pipe
Combustible
Wall
Page 9
Front Flue / Masonry Chimney
Rear Flue / Masonry Chimney
Liner
Barometric
Draft
Control*
(in either
location)
Clean Out
Liner
Masonry
Chimney
Figure 9
*Barometric draft control may be installed in either vertical or
horizontal section of flue pipe no less than 12" and no more than
18" from furnace flue outlet.
Barometric Draft
Control*
(in either location)
Clean Out
Masonry
Chimney
9 − The vent pipe should slope upward toward the chim-
ney on horizontal run at least 1/4 inch (6 mm) to the
foot (0.3 m) and should be supported by something
other than the furnace, such as isolation hangers. See
figure 9.
10 − Extend the vent pipe into the chimney so that it is flush
with the inside of the chimney liner. Seal the joint between the pipe and the liner.
11 − The furnace shall be connected to either a factory−built
chimney or vent which complies with a recognized
standard, or to a masonry or concrete chimney which
has been lined with a material acceptable to the authority having jurisdiction.
12 − When two or more appliances vent into a common
vent, the area of the common vent should not be less
than the area of the largest vent or vent connection
plus 50% of the area of the additional vent or vent connection. Chimney must be able to sufficiently vent all
appliances operating at the same time.
Front Flue / Factory−Built Chimney
Rear Flue / Factory−Built Chimney
Figure 10
Condensate
Drain
Factory−
Built
Chimney
Barometric Draft
Control*
(in either location)
Barometric Draft
Control*
(in either location)
Factory−
Built
Chimney
Condensate
Drain
*Barometric draft control may be installed in either vertical or
horizontal section of flue pipe no less than 12" and no more than
18" from furnace flue outlet.
13 − The vent pipe shall not be connected to a chimney
vent serving a solid fuel appliance or any mechanical
draft system.
14 − All unused chimney openings should be closed.
15 − All vent pipe run through unconditioned areas or out-
side shall be constructed of factory built chimney sections. See figure 10.
16 − Where condensation of vent gas is apparent, the vent
should be repaired or replaced. Accumulation of condensation in the vent is unacceptable.
17 − Vent connectors serving this appliance shall not be
connected into any portion of mechanical draft systems operating under positive pressure.
18 − Keep the area around the vent terminal free of snow,
ice and debris.
Loading...