Desa MSRBVN, MSRBVP User Manual

CAST IRON STOVE AND B-VENT

(FREESTANDING FIREPLACE HEATER)

BURNER SYSTEM

OWNER’S OPERATION AND INSTALLATION MANUAL

NATURAL GAS BURNER SYSTEM MODEL MSRBVN

PROPANE/LP GAS BURNER SYSTEM MODEL MSRBVP

REMOTE READY

IMPORTANT: This b-vent burner system must be installed into approved Sun Valley cast iron stove
bodies, models MC(*) series ONLY. See page 3 of this manual.

QUALIFIED INSTALLER: If you encounter problems during installation of this product, please
contact DESA International’s Technical Service Department at 1-800-337-2564.

* Indicates Color Suffix Designation

WARNING: If the information in this manual is
not followed exactly, a fire or explosion may
result causing property damage, personal in­jury, or loss of life.

FOR YOUR SAFETY
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.

FOR YOUR SAFETY

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch

• Do not use any phone in your building.

• Immediately call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s
instructions.

• If you cannot reach your gas supplier, call the

fire department.

This appliance may be installed in an aftermarket*, permanently located manufactured
(mobile) home, where not prohibited by state or local codes.

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.

— Installation and service must
be performed by a qualified in­staller, service agency, or the gas
supplier.

— 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.

*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer.

Save this manual for future reference.

SUN VALLEY STOVE COMPANY

CAST IRON STOVE AND BURNER SYSTEM

SAFETY
INFORMATION

WARNINGS

IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, oper­ate, or service this stove and burner
system. Improper use of this stove
and burner system can cause se­rious injury or death from burns,
fire, explosions, electrical shock,
and carbon monoxide poisoning.

DANGER: Carbon monoxide

poisoning may lead to death!

This stove with burner system is a vented
product. If this unit is not properly installed by
a qualified service person with glass door
properly seated and sealed, gas combustion
products can spill into your home.

Carbon Monoxide Poisoning: Early signs

of carbon monoxide poisoning resemble the
flu, with headaches, dizziness, or nausea. If
you have these signs, the stove may not have
been installed properly. Get fresh air at
once! Have stove inspected and serviced by
a qualified service person. Some people are
more affected by carbon monoxide than oth­ers. These include pregnant women, people
with heart or lung disease or anemia, those
under the influence of alcohol, and those at
high altitudes.

Propane/LP gas and natural gas are both
odorless. An odor-making agent is added to
each of these gases. The odor helps you
detect a gas leak. However, the odor added
to these gases can fade. Gas may be present
even though no odor exists.

Make certain you read and understand all
warnings. Keep this manual for reference. It
is your guide to safe and proper operation of
this stove and burner system.

WARNING: Any change to
this stove or burner system or its
controls can be dangerous.

1. This appliance is only for use with the
type of gas indicated on the rating plate.
This appliance is not convertible for use
with other gases unless a certified kit
is used.

2. For propane/LP burner system, do not
place propane/LP supply tank(s) inside
any structure. Locate propane/LP sup­ply tank(s) outdoors. T o prevent perfor­mance problems, do not use propane/LP
fuel tank of less than 100 lbs. capacity.

3. If you smell gas

• shut off gas supply

• do not try to light any appliance

• do not touch any electrical switch; do

not use any phone in your building

• immediately call your gas supplier

from a neighbor’s phone. Follow the
gas supplier’s instructions

• if you cannot reach you gas supplier ,

call the fire department.

4. Never install the stove

• in a recreational vehicle

• where curtains, furniture, clothing, or

other flammable objects are less than
42" from the front, top, or sides of
the fireplace

• in high traffic areas

• in windy or drafty areas

5. This stove reaches high temperatures.
Keep children and adults away from hot
surfaces to avoid burns or clothing igni­tion. Stove will remain hot for a time
after shutdown. Allow surfaces to cool
before touching.

6. Carefully supervise young children
when they are in the room with stove.

7. Do not modify this burner or stove un­der any circumstances. Any parts re­moved for servicing must be replaced
prior to operating stove or burner system.

8. Turn burner system off and let cool
before servicing, installing, or repair­ing. Only a qualified service person
should install, service, or repair the
stove or burner system. Have burner
system inspected annually by a quali­fied service person.

9. You must keep control compartments,
burners, and circulating air passages
clean. More frequent cleaning may be
needed due to excessive lint and dust
from carpeting, bedding material, pet
hair, etc. T urn of f the gas valve and pi­lot light before cleaning stove.

10. Have venting system inspected annu­ally by a qualified service person. If
needed, have venting system cleaned
or repaired. See Cleaning and Mainte-
nance, page 22.

11. Keep the area around your stove clear
of combustible materials, gasoline, and
other flammable vapor and liquids. Do
not run burner system where these are
used or stored. Do not place items such
as clothing or decorations on or around
stove.

12. Do not use this stove to cook food or
burn paper or other objects.

13. Never place anything on top of stove.

14. Do not use any solid fuels (wood, coal,
paper, cardboard, etc.) in this stove. Use
only the gas type indicated on burner
system nameplate.

15. This appliance, when installed, must be
electrically grounded in accordance
with local codes or, in the absence of
local codes, with the National Electri-

cal Code, ANS/NFPA 70, or the Cana­dian Electrical Code, CSA C22.1.

16. Do not obstruct the flow of combus­tion and ventilation air in any way . Pro­vide adequate clearances around air
openings into the combustion chamber
along with adequate accessibility clear­ance for servicing and proper operation.

17. Do not install stove directly on carpet­ing, vinyl tile, or any combustible mate­rial other than wood. The stove must set
on a metal or wood panel extending the
full width and depth of the stove.

18. Do not use stove or burner system if
any part has been exposed to or under
water. Immediately call a qualified ser ­vice person to arrange for replacement
of the unit.

19. Do not operate burner system if an y
log is broken.

20. Do not use a blower insert, heat ex­changer insert, or other accessory not
approved for use with this stove.

21. Do not operate burner system with
glass door removed, cracked, or bro­ken.

22. This burner system must be properly
connected to a vent system. This burner
system is equipped with a vent safety
shutoff system.

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2

106706

OWNER’S MANUAL

PRODUCT
IDENTIFICATION

Cast Iron
Stove Body

Log Set

ON/OFF Switch
(Opposite Side)

Piezo Ignitor

O

H

L

I

OFF

ON

Control Valve

Cast Iron
Stove Body

LOCAL CODES

Install and use stove and burner system with
care. Follow all local codes. In the absence
to local codes, use the current National Fuel
Gas Code ANS Z223.1, also known as
NFPA 54* (USA) or the current CAN/CGA-
B149[.1 or .2] Installation Codes (Canada).

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

PRODUCT
FEATURES

OPERATION

This B-vent freestanding stove with burner
system is clean burning and vents vertically.
Heat is generated by both realistic flames
and glowing embers. When used without
the blower accessory, the stove with burner
system requires no electricity making it
ideal for emergency backup heat.

Venting
System

Draft Hood
Relief
Opening

Pilot Assy

Blower with
Adjustment
Knob (Optional
Installation)

Rear Cover

Glowing Embers

Grate Assembly

Figure 1 - Sun Valley B-Vent Freestanding Fireplace Shown Installed in Approved Sun
Valley Cast Iron Stove Body Models MC Series Only

Burner

Glass Door
Assembly

Lava Rock

PIEZO IGNITOR

This burner system has a piezo ignitor. This
system requires no matches, batteries, or
other sources to light burner system.

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SUN VALLEY STOVE COMPANY

CAST IRON STOVE AND BURNER SYSTEM

PRE-INSTALLATION
PREPARATION

WARNING: A qualified ser­vice person must install stove
and burner system. Follow all lo­cal codes.

Corner Installation

CAUTION: This stove creates
warm air currents. These currents
move heat to wall surfaces next
to stove. Installing stove next to
vinyl or cloth wall coverings or
operating stove where impurities
(such as tobacco smoke, aro­matic candles, cleaning fluids,
oil or kerosene lamps, etc.) in the
air exist, may discolor walls.

LOCATION AND SPACE
REQUIREMENTS

Determine the safest and most efficient loca­tion for your Sun Valley B-vent freestanding
stove. Make sure that rafters and wall studs
are not in the way of the venting system.
Choose a location where the heat output is
not affected by drafts, air conditioning ducts,
windows, or doors. Figure 2 shows some
common locations. Read all venting infor­mation in this manual. Be aware of all restric­tions and precautions before deciding the
exact location for your stove.

When deciding the location of your stove,
follow these rules:

1. Do not connect this stove and burner
system to a chimney flue serving a
separate solid-fuel burning fireplace or
appliance.

2. Due to high temperatures, do not lo­cate this stove in high traffic areas or
near furniture or draperies.

3. Proper clearances must be maintained,
see Figures 3 and 4.

4. This stove is a freestanding unit de­signed to set directly on the floor. If
your stove is to be installed directly on
carpeting, vinyl tile, or any combustible
material other than wood, it must be
installed on a metal or wood panel ex­tending the full width and depth of the
stove. See Figure 5.

On Wall with Vertical
Termination Through Ceiling

Figure 2 - Common Freestanding Stove Locations

Ceiling

42"

6"

36"

from

Front

Floor

Figure 3 - Minimum Clearances for Standard Installation

4"

Figure 4 - Minimum Clearance for Corner
Installation

29"

4"

from

Back

Wall

21 1/4"

4"

1

19

/2"

Figure 5 - Freestanding Stove with Burner
System Bottom Dimensions

4"

Front

26"

Front

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4

106706

CAST IRON STOVE

OWNER’S MANUAL

AND B-VENT
BURNER SYSTEM
ASSEMBLY

STOVE BODY ASSEMBLY

1. Lift off corrugated box enclosing stove
body crating.

2. Remove all screws fastening the wood
frame enclosure. Spread wood frame open
and lift away from plastic-bagged stove
body. The bottom pieces of pallet wood
will remain bolted to the stove body.

3. Remove plastic bag from stove body.

4. Remove back panel from stove and dis­card (see Figure 6). Use an adjustable
wrench or a 10 mm socket. Remove six
(6) bolts and washers. Keep bolts and
washers to attach rear cover.

5. Remove all contents from inside stove
cavity. Contents include:

(1) - Stove bottom (Discard - Not used

with this application)
(4) - Legs with leg leveler bolts
(1) - Bottom door
(3) - Top grates
(1) - Hardware kit bag with fasteners

6. Carefully lay stove body on back to at­tach bottom components to stove body
(see Figure 7). Rest stove on drop cloth
or blanket to avoid scratching stove edges.

7. Remove remaining pallet wood at­tached to bottom of stove body (see
Figure 8). Use an adjustable wrench to
remove bolts.

8. Fasten each leg to stove with four (4)
M8 x 1.25 - 20mm bolts. Use a flat
washer and lock washer with each bolt.
Tighten bolts into threaded holes on
stove body (see Figure 9 and Figure 10,
page 6). Use an adjustable wrench or a
12mm socket.

Bolt

Back
Stove
Panel

Figure 6 - Removing Back Panel

Front of
Stove Unit

Drop
Cloth/
Blanket

Figure 7 - Laying Down Stove On Side

Pallet Wood

Figure 8 - Removing Pallet Wood From The Bottom of The Stove

Door Hinge
Step Bolt Hole

Product
Identification
Label

Top of Stove Unit

Bolt

Leg
Hole

Front of Stove Unit

Pallet
Wood
Bolted to
Bottom of
Stove Body

Front

Door Catch Bolt With
Adjustable Hex Nuts Hole

Front

Pallet Wood

Bottom Of
Stove Unit

Leg
Hole

Stove
Unit

106706

Bottom Of
Stove Unit

Leg Hole

Figure 9 - Locating Threaded Holes for Legs and Door Attachment

5

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Continued

SUN VALLEY STOVE COMPANY

CAST IRON STOVE AND BURNER SYSTEM

CAST IRON STOVE
AND B-VENT
BURNER SYSTEM
ASSEMBLY

Continued

9. Attach stove door by inserting step bolt
through door hinge pivot hole and into
threaded hole in stove body (see Fig­ure 9, page 5 and Figure 11). Use an
adjustable wrench or a 12mm socket
to fasten step bolt. Tighten step bolt
until snug. Make sure door moves
freely.

Washers

Bolt

Figure 10 - Attaching Stove Legs

Stove Door
Panel

Door Hinge

Step
Bolt

Bolt
Shoulder

Figure 11 - Attaching Lower Stove Door
Panel

Bottom Of
Stove Unit

Leg

Threaded
Hole

10. Install door catch bolt (M8 x 1.25-55mm
with two M8 hex nuts) into threaded
hole on stove body (see Figure 9, page

5). Use an adjustable wrench or a 12mm
socket. The catch bolt has two hex nuts
attached to it (see Figure 12). The top
nut is a bolt stop and the bottom nut is
for door leveling adjustment.

11. Check general catch bolt alignment
with door claw. Make final adjustment
and door leveling after stove is in nor­mal standing position (see Figure 12).

12. Carefully lift stove back up on its four
attached legs.

13. Remove 2 bolts from bottom of stove
and one from the top of the stove to
remove the front panel assembly (see
Figure 13). Save bolts.

14. Lay the front panel assembly face down
on a protected surface. Remove the two
screws that hold the front plate onto the
front surround plate (see Figure 14).
Save these screws.

15. Remove the seven screws and washers
that hold the screen onto the front sur­round plate. Discard these screws,
washers, and screen. They are for vent­free use only (see Figure 14).

16. Replace the two screws from step 14
to reassemble the front plate and the
front surround plate. Set this assembly
aside until stove heater has been in­stalled, logs have been placed inside of
heater, and glass door to heater insert
has been replaced.

17. Remove the two screws that secure the
metal plate located across the front sec­tion at the top of the stove body (see Fig­ure 15). Discard these screws and metal
plate. They are for vent-free use only.

Bolt
Stop

Adjusting

Door
Claw

Door

Figure 12 - Catch Bolt and Door Claw
Orientation

Nut

Catch
Bolt

Stove
Body

Front
Assembly

Figure 13 - Removing Front Assembly

Front
Surround
Plate

Screw with
Washer

Screen

Front Plate

Figure 14 - Removing Screen from Front
Assembly

Screw

Metal
Plate

Figure 15 - Removing Metal Plate from
Stove Body

Bolt

Screws

Stove Body

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6

106706

OWNER’S MANUAL

CAST IRON STOVE
AND B-VENT
BURNER SYSTEM
ASSEMBLY

Continued

INSTALLING B-VENT
BURNER SYSTEM INTO
STOVE BODY

1. Carefully lift burner system and place
into stove body from the rear of stove
(see Figure 16).

2. Place the left, right, and center grate
top into top of stove body.

Burner
Cast Iron
Stove Body

System

O

L

H

I

F

P

F

I

O

L

O

O

T

N

INSTALLING OPTIONAL
BLOWER ACCESSORY

NOTICE: If installing blower in an
existing stove burner system with
gas connections, shut off gas sup­ply and disconnect burner sys­tem from gas supply. Contact a
qualified service person to do this.

1. Remove 4 hex screws securing rear cover
to back of stove body (see Figure 18).

2. Separate bottom cover from rear cover
by loosening the 8 mounting screws
(see Figure 18).

3. Align the holes in the top mounting tabs
of blower with the holes in wall of rear
cover. Using the 4 screws provided,
mount blower and tighten screws se­curely (see Figure 19).

4. Attach thermal switch and bracket to
inside rear cover wall with two hex head
screws provided as shown. After secur ­ing bracket to rear cover, carefully bend
along existing bend line on bracket to
almost a 90° angle (see Figure 19). This
will allow thermal switch to be posi­tioned against stove rear wall and sense
temperature when in operating mode.

Locknut

Blower
Control

Control
Shaft

Knob

TOP VIEW

Speed

Thermal

Control

Switch
and
Bracket

Screws
Mounting
Holes

Blower
Assembly

Mounting
Holes

Figure 19 - Blower Assembly, Speed
Control, and Thermal Switch Locations

Figure 16 - Installing Burner System into
Cast Iron Stove Body

Center Top Grate
(Included with Stove
Body)

Left Top Grate

Right
Top
Grate

Burner
System
in Stove
Body

Figure 17 - Installing Top Grates

Hex Screws

Rear Cover

Stove Body

Mounting
Screws

Mounting
Screws

Mounting
Screws

Bottom Cover

Figure 18 - Removing Rear Cover and Bottom Cover from Stove Body

Hex
Screws

Continued

106706

7

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SUN VALLEY STOVE COMPANY

CAST IRON STOVE AND BURNER SYSTEM

CAST IRON STOVE
AND B-VENT
BURNER SYSTEM
ASSEMBLY

Continued

5. Place speed control on left inside of rear
cover and push the plastic control shaft
through opening (see Figure 19).

6. While supporting speed control, secure
control shaft with lock nut by pushing and
turning lock nut with pliers clockwise
until tight against the side of rear cover.
Place control knob provided onto shaft.

7. Place the green ground w ire be tween the
bottom hole on the blower assembly and
the hex screw and tighten (see Figure 20).

8. Connect the blue wire to the blower as­sembly and one side of the thermal
switch (see Figure 20).

9. Connect the black wire to the other side
of the thermal switch (see Figure 20).

10. Connect the white wire to the other ter­minal on the blower motor assembly
(see Figure 20). Make sure the thermal
switch has been properly installed to fit
against back of fireplace insert after the
rear cover assembly has been reinstalled.

Speed
Control
Box

11. Make sure all wire connections to termi­nals on blower motor and thermal switch
are securely attached and that the screw
retaining the green ground wire is tight.

12. Check to make sure that the power cord
is completely clear of the blower wheel
and that there are no foreign objects in
blower wheel.

WARNING: Never touch the

blower wheel while in operation.

13. Peel of f the backing paper and stick the
supplied wiring diagram decal on the
inside of rear cover as shown (see Fig­ure 20).

14. Connect or reconnect gas supply fol­lowing instructions in Connecting

Stove and Burner System to Gas Sup­ply, page 14.

WARNING: Failure to position
the parts in accordance with sup­plied diagrams or failure to use
only parts specifically approved
with this heater may result in dam­age or personal injury.

INSTALLING REAR COVER

1. Place rear cover behind stove body.
Rear cover will rest on the bottom ledge
of the stove body.

2. Place wire harness from ON/OFF
switch under the cast of stove body.

3. Using screws provided, attach rear cover
to back of stove body. See Figure 21.

IMPORTANT:

securely in place before venting pipes
are installed.

4. Open lower door panel on front of stove
to locate valve.

Hex
Screws

This rear cover must be

Rear Cover (Shown
with Optional Blower)

ON/OFF
Switch

ON/OFF
Switch
Wire
Harness

Blower
Power
Cord

Black
Wire

Thermal
Switch

Blue
Wire

Screw

Green Ground Wire

Figure 20 - Blower Wiring Layout

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White
Wire

Power Cord
(Route Through
Plastic Bushing in
Bottom Cover When
Assembled)

Wiring
Diagram
Decal

8

Figure 21 - Installing Rear Cover (Shown
with Optional Blower Accessory)

5. Connect one wire terminal from ON/OFF
switch to the THTP terminal on the valve.
Connect remaining wire terminal to the
TH terminal on the valve. Make sure that
the wire terminals are in the positions on
the unit as pictured in Figure 22. If wires
are not connected as shown, the ON/OFF
switch will not work.

To Control
Switch

Figure 22 - Control Valve Terminals

106706

OWNER’S MANUAL

CAST IRON STOVE
AND B-VENT
BURNER SYSTEM
ASSEMBLY

Continued

6. Reattach bottom cover to rear cover
with 8 screws removed in step 2 on
page 8 (see Figure 18, page 7). Make
sure that you don’t pinch any wires
during reassembly.

WARNING: A qualified in­staller or service person must
connect burner system to gas
supply. Follow all local codes.

VENTING
INSTALLATION

WARNING: Read all instruc­tions completely and thoroughly
before attempting installation. Fail­ure to do so could result in serious
injury, property damage, or loss of
life. Operation of improperly in­stalled and maintained venting sys­tem could result in serious injury,
property damage, or loss of life.

NOTICE: Failure to follow these
instructions will void the warranty.

INSTALLATION PRECAUTIONS

Consult local building codes before begin­ning the installation. Only a qualified ser­vice person should install venting system.
The installer must follow these safety rules:

• Wear gloves and safety glasses for
protection

• Use extreme caution when using ladders
or when on roof tops

• Be aware of electrical wiring locations
in walls and ceilings

The following actions will void the war­ranty on your venting system:

• Installation of any damaged venting
component

• Unauthorized modification of the vent­ing system

• Installation of any component part not
manufactured or approved by DESA
International

• Installation other than as instructed by
these instructions

Your burner system is approved for use with
any listed gas vent. A listed gas vent is a factory
made and listed system designed, and installed
exclusively for removing products of combus­tion, excess air, and dilution air resulting from
burning fuel gas. Metal vents, the most com­mon type of vent, employ double wall con­struction enclosing an insulating air space.
This air space both helps keep flue gases warm
and reduce heat transferred to nearby combus­tibles. This appliance is equipped with a safety
control system designed to protect against
improper venting of combustion products.

It is very important that the venting system
maintain its balance between the combus­tion air intake and the flue gas exhaust.
Certain limitations apply to vent configura­tions and must be strictly followed.

WARNING: This gas stove with
burner system and vent assembly
must be vented directly to the out­side. The venting system must
NEVER be attached to a chimney
serving a separate solid fuel burn­ing appliance.

TYPE B-VENT INSTALLATION
(Listed B-0 or Greater)

Before beginning installation be sure that the
overall height and gas vent size conform to
building code requirements. Gas vents ex­tending through pitched roofs can extend a
minimum height of at least 600 mm (2')
higher than any obstruction within 3m (10').
Gas vents extending through flat roofs are
required to extend at least 600 mm (2') above
the roof and at least 600 mm (2') higher than
any portion of the building or adjoining build­ing within 3m (10') of the gas vent.

• Venting instruction contained in this
manual may or may not apply to your
area. Consult your local authority for re­quirement in your area.

• Where the gas vent extends through ac­cessible spaces, it should be enclosed to
avoid personal contact and damage. En­closure walls should have a fire rating
equal to or greater than the floors through
which the gas vent passes except in single
or two-family dwellings.

• Situate the gas vent in the structure so
that it can be installed without cutting
joists, sills, plates, or major load bearing
partitions or members. It is also impor­tant to locate the base of the gas vent as
near as possible to the heating appliance.

• This heater must be properly connected to
a venting system. This heater is equipped
with a vent safety shutoff system.

• Use only vents labeled "FOR EXTE­RIOR USE" above the roofline.

• Consult the authority having jurisdic­tion to select the correct gas vent di­ameter. Avoid using a larger than nec­essary diameter.

Round Top

Storm Collar

Flashing

Firestop
Spacer

Enclosure
Wall

Gas Vent
Length

Support
Plate

Adjustable
Length

Figure 23 - Typical B-Vent Installation

Keep Electrical
Wires and Building
Insulation Away
from Gas Vent and
Out of the Required
Air Space

Roof
Support

25mm (1")
Clearance to
Combustible
Material

25mm (1")
Clearance to
Combustibles

Continued

106706

9

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SUN VALLEY STOVE COMPANY

CAST IRON STOVE AND BURNER SYSTEM

VENTING
INSTALLATION

Continued

INSTALLATION OF LISTED
B-1 VENT

WARNING: Installation should
only be made by qualified per­sons who are familiar with the
safety procedures required for
the installation of the product,
who are equipped with the proper
tools and testing instruments,
and who have achieved proper
certification of licensing. Instal­lations made by unqualified per­sons can result in the risk of in­jury or electrical shock which can
be serious or even fatal.

Figures 24, 25 and 26, show other options
for the gas vent. When venting through a
side wall your vent pipe must have the
proper temperature rating (see Figure 26).
Manufacturer’s clearances must also be
maintained. Consult the authority having
jurisdiction in your area regarding venting
through side wall.

Figure 25 - Vertical Venting Configuration
Through Chimney

INSTALLING VENT SYSTEM
IN A CHASE

A chase is a vertical boxlike structure built
to enclose venting that runs along the out­side of a building. A chase is not required for
such venting.

NOTICE: Treatment of firestops
and construction of the chase
may vary from building type to
building type. These instructions
are not substitutes for the re­quirements of local building
codes. You must follow all local
building codes.

Note:

When installing in a chase, you should
insulate the chase as you would the outside
walls of your home. This is especially im­portant in cold climates. Minimum clear­ance between vent pipes and combustible
materials such as insulation is 1".

CHECKING VENT CAPACITY

Complete all gas piping, electrical, and vent
connections. After adjusting the fireplace
and lighting the main burners, allow a couple
of minutes for warm-up. Hold a lighted
match just under the rim of the draft hood
relief opening. Proper venting will draw the
flame toward or into the draft hood. Im­proper venting, indicated by escape or spill­age of burned gas, will cause match to
flicker or go out. Smoke from a cigarette
will also be pulled into the draft hood if the
vent is drawing properly.

Figure 26 - Venting Through a Side Wall

Figure 24 - Vertical Venting Through
Ceiling Using Two 90° Elbows

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10

Figure 27 - Test for Proper Venting

106706