Desa VDVF36PN-PP, VDVF36STN-STP User Manual

DIRECT-VENT GAS
FIREPLACE HEATER

OWNER’S OPERATION AND

®

INSTALLATION MANUAL

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(Peninsula
Shown)

VDVF36PN/PP (PENINSULA) AND VDVF36STN/STP (SEE-THRU)

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

— Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any
other appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not
use any phone in your building.

• 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.

— Installation and service must be performed by

a qualified installer, service agency, or the gas
supplier.

SAVE THIS BOOK

This book is valuable. In addition to instructing
you on how to install and maintain your appli­ance, it also contains information that will
enable you to obtain replacement parts or
optional accessory items when needed. Keep
it with your other important papers.

WARNING: Improper installation,
adjustment, alteration, service, or
maintenance to this appliance can
cause injury or property damage.
For assistance or additional infor­mation consult a qualified installer,
service agency, or the gas supplier.

WARNING: This Direct-Vent Gas
Fireplace Heater series is intended
for use with natural or propane/LP
gas only. Do not attempt to burn any
solid fuels in these appliances.

CHECK LOCAL CODES PRIOR TO INSTALLATION

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

This appliance is only for use with the type of gas indicated on the rating plate. This appliance
is not convertible for use with other gases.

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

Save this manual for future reference.

Save this manual for future reference.

TABLE OF CONTENTS

2

PRODUCT DIMENSIONS

TABLE OF CONTENTS

PRODUCT DIMENSIONS........................................................... 2

GLOSSARY OF TERMS............................................................. 3

INTRODUCTION......................................................................... 4

SELECTING LOCATION............................................................. 4

PRE-INSTALLATION PREPARATION ........................................ 5

GENERAL VENTING .................................................................. 7

VENTING INSTALLATION .......................................................... 9

INSTALLATION ......................................................................... 16

PILOT ASSEMBL Y ADJUSTMENT........................................... 20

BURNER FLAME ADJUSTMENT............................................. 21

OPERATING GUIDELINES AND MAINTENANCE

INSTRUCTIONS ....................................................................... 21

OPERATING FIREPLACE ........................................................ 22

SERVICE HINTS....................................................................... 23

TECHNICAL SERVICE ............................................................. 23

REPLACEMENT PARTS .......................................................... 23

WIRING DIAGRAM ................................................................... 24

TROUBLESHOOTING .............................................................. 25

ACCESSORIES ........................................................................ 29

REPLACEMENT PARTS LIST .................................................. 29

OWNER’S REGISTRATION FORM .......................................... 31

WARRANTY INFORMATION...................................... Back Cover

PRODUCT DIMENSIONS

Left Side
Surround

Back of
Surround

Right Side
Surround

(Back)

(57cm)

23 5/8"

(60cm)

11

(30cm)

1 1/4" (3cm)

5

22

/8"

15

/16"

1

10

/2"

(27cm)

(Left Side)

1.5"ø

(4cm)

(Right Side)

RIGHT SIDE

Alternate Gas
Supply Inlets

(Front)

1.5"ø

(4cm)

10 1/2"

(27cm)

39 3/4"

(101cm)

3" (8cm)

Rating Plate
Location

3

/8"

26

(67cm)

BA CK VIEWTOP VIEW

1" (3cm)

FRONT VIEW

34

(88cm)

5

22

/8"

(57cm)

3" (8cm)

2" (5cm)

30"

(76cm)

(Opening)

3

/4"

32" (81cm) (Opening) 1

1

41

/8" (104cm)

Figure 1 - VDVF36PN/PP (Peninsula) Dimensions

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7

/8" (5cm)

7

19

/8" (50cm)

(Opening)

25" (64cm)

105706-01B

PRODUCT DIMENSIONS

Continued

Back of
Surround

(Back)

Right Side
Surround

Left Side
Surround

23 5/8"

(60cm)

11

15

(30cm)

/16"

10 1/2"

(27cm)

TOP VIEW

(Left Side)

1.5"ø
(4cm)

(Right Side)

Alternate Gas
Supply Inlets

1.5"ø
(4cm)

(28cm)

11 1/8"

(Front)

39 3/4"

(101cm)

3

26

/8"

(67cm)

3" (8cm)

PRODUCT DIMENSTIONS

BA CK VIEW

1" (3cm)

GLOSSARY OF TERMS

3

34

/4"

(88cm)

5

/8"

22
(57cm)

3" (8cm)

2" (5cm)

3

3

1

1

/4" (3cm)

RIGHT SIDE

Rating Plate
Location

22 5/8"

(57cm)

7

/8" (5cm)

32" (81cm) (Opening)

1

43

/8" (110cm)

1

Figure 2 - VDVF36STN/STP (See-Thru) Dimensions

GLOSSARY OF TERMS

Chase - A box-like enclosure to protect venting from the elements
when the venting run is on the outside of a structure.

Mastic - A pliable sealant for use around the vent terminal.
Snorkel Termination - A box that raises the horizontal termina-

tion above ground level clearances.
Vent Terminal - Mounted on an outside wall or roof to separate the

inlet and outlet of the vent system and protect it from weather.
Vinyl Siding Standoff - A metal box that separates the vent cap

from vinyl siding.
Wall Thimble/Firestop - A metal plate used to secure the vent

pipe when it passes through a wall or ceiling.

FRONT VIEW

5

/8" (60cm)

23

25" (64cm)

30"

(76cm)

(Opening)

105706-01B

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INTRODUCTION

4

Before You Begin

SELECTING LOCATION

INTRODUCTION

WARNING: This product contains and/or generates
chemicals known to the State of California to cause
cancer or birth defects, or other reproductive harm.

Models VDVF36PN/PP series are three-sided direct-vent gas fire­place heaters with a sealed combustion chamber. Models
VDVF36STN/STP series are two-sided direct-vent gas fireplace
heaters with a sealed combustion chamber. All models use a
millivolt gas control and a millivolt ignition system. All models
have a manual HI/LO valve to control the flame height. A fan kit is
available for these models as an option.

NOTICE: Check local building codes for area require­ments before installing this appliance.

• Models VDVF36PN and VDVF36STN use NATURAL
GAS ONLY.

• Models VDVF36PP and VDVF36STP use PROPANE/LP
GAS ONLY.

If you have any doubts as to which gas your particular appliance is
approved and tested for, please check the CSA rating plate located
at the interior of the appliance opening or consult your local
distributor (see Figure 1, page 2 and Figure 2, page 3).

BEFORE YOU BEGIN

Before beginning the installation of your appliance, read these
instructions through completely.

This DESA appliance and its approved components are safe when
installed according to this installation manual and operated as recom­mended by DESA. Unless you use DESA approved components tested
for this appliance, YOU MAY CAUSE A SAFETY HAZARD!

The DESA warranty will be voided by, and DESA disclaims any
responsibility for the following actions:

A) Modification of the appliance or any of the components manu-

factured by DESA unless otherwise permitted in writing by DESA.

B) The use of any components part not approved by DESA in

combination with this DESA appliance.

C) Installation and/or operation in a manner other than instructed

in this manual.

D) The burning of anything other than the type of gas approved

for use in this gas appliance.

This appliance, when installed, must be electrically grounded in
accordance with local codes, or in the absence of local codes, with
the National Electrical Code, ANSI/NFPA 70 or the Canadian
Electrical Code, CSA C22.1.

The installation must conform with local codes or, in the absence of
local codes, with the National Fuel Gas Code, ANSI Z223.1 or the
Canadian Installation Code, CAN/CGA B149.

This appliance complies with ANSI Z21.88-1998 and CSA 2.33­M98 as a VENTED GAS FIREPLACE HEATER. It is listed and
tested by International Approval Services.

NOTICE: This appliance is intended to be used only
for supplemental heat.

WARNING: Installation and repair should be done
by a qualified service person. The appliance should
be inspected before use, and at least annually there­after by a qualified service person. More frequent
cleaning may be required due to excessive lint from
carpeting, bedding, pet hair, etc. It is imperative that
the control compartments, burners, and circulating
air systems be kept clean.

SELECTING LOCATION

To determine the safest and most efficient location for your appli­ance, consider the following guidelines:

1. The location must allow for proper clearances (see Clearances,
page 5).

2. Consider a location where heat output would not be affected
by drafts, air conditioning ducts, windows, or doors.

3. A location that avoids the cutting of joists or roof rafters makes
installation easier.

In selecting a location, the following precautions must be observed:

1. A projection may be ideal for a new addition on an existing finished
wall. See Horizontal T ermination Configuration, page 12, or V er ti-
cal T ermination Configuration, pages 14 and 15.

2. Do not locate appliance close to where gasoline or other flam­mable liquids may be stored. The appliance must be kept clear
and free from combustible materials.

3. Do not connect this appliance to a chimney system used for
solid fuel burning fireplace.

4. Due to high temperatures, do not locate this appliance in high
traffic areas or near furniture and draperies.

5. This fireplace may be installed in bedrooms or bathrooms in
accordance with local codes.

6. Never obstruct the openings of the appliance or flow of venti­lation air. Keep the control compartments accessible.

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105706-01B

SELECTING LOCATION

Continued

SELECTING LOCATION

PRE-INSTALLATION PREPARATION

Clearances

5

5

7. Do not use this appliance if any part has been under water. Imme­diately contact a local service technician to examine the appliance
and to replace any part(s) of the control ignition system and other
related components that have submerged under water .

Figure 3 - Possible Installation of Peninsula Fireplace

PRE-INSTALLATION
PREPARATION

CAUTION: Do not block required air spaces with
insulation or any other material. Do not obstruct the
effective opening of the appliance with any type of
facing material.

CLEARANCES

CEILING

36"

(91cm)

Min.

WALL

36"

(91cm)

Min.

Figure 4 - Minimum Clearances (Peninsula Shown)

Left Side
Surround
(0" Min.)

Combustible
Material

Right Side
Surround
(0" Min.)

Perpendicular
Wall 2" (5cm)
Min. From Opening

Figure 5 - Minimum Clearances (See-Thru Shown)

TOP VIEW

2" (5cm)

Wall In Front Of Glass

36" (91cm) Min.

0" Floor

(91cm)

0"

Drywall

2 x 4 Stud

Minimum 1"
Clearance from
Side (Only for
See-Thru)

36"

Minimum clearances to combustibles are:

• Back and Sides of Surround:......................................... 0" min.

• Vent Surfaces: ............................................... 1" (2.54cm) min.

• Ceiling to Opening: ................................... 36" (91.44cm) min.

• Floor: .............................................................................0" min.

• Wall to Front of Glass: .............................. 36" (91.44cm) min.

• Perpendicular Wall to Opening of Unit:.......2" (5.08mm) min.

• Top Spacer: ...................................................................0" min.

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105706-01B

39 3/4"

(101cm)

Min.

4

0

1

/

2

"

(1

0

2

.9

c

m

)

2

3

5

/

8

"

(

6

0

c

m

)

*

PRE-INSTALLATION PREPARATION

6

Mantel Clearances
Framing

PRE-INSTALLATION
PREPARATION

Continued

MANTEL CLEARANCES

Woodwork, such as wood trims, mantles, and other combustible
materials projecting no more than 1

1

/2 inches (3.81cm) shall not be
placed within 7 inches (17.78cm) from the opening of the unit.
Combustible material above and projecting more than 1 1/2 inches
(3.81cm) from the appliance’s face must not be placed less than 15
inches (38.10cm) from the opening of the appliance (see Figure 6).

Drywall (Gypsum
Board, Sheetrock, Etc.)

Safe Zone for Projection
of Combustible Material

2 x 4

Spacer

1

/2" (3.8cm)

1
Min.

UNIT

15"

Min.

12"

(30.5cm)

Min.

4"

(10.2cm)

Min.

7" (17.8cm)
Min.

Combustible
Material May
Be Used

21"

(53.3cm)

Min.

(38.1cm)

Figure 6 - Mantel Clearances for Peninsula and See-Thru
Fireplaces (Peninsula Shown)

FRAMING

Once the final location has been determined, observing height
clearances for vent termination, you may construct framing using
dimensions shown in Figures 7 through 12, depending on your
installation.

If the appliance is to be installed directly on carpeting, tile (other
than ceramic), or any combustible material other than wood floor­ing, the appliance must be installed on a metal or wood panel
extending the full width and depth of the appliance. There are three
holes on each side of the bottom of the unit where screws can be used
to secure the unit to the floor.

The gas supply line may be connected through the side framing or
alternately through the lower sub-flooring or a platform base if
provided (see Figures 10 and 11, page 7). Depending on the
installation, refer to the appropriate illustration.

"

8

/

5

)

23

(60cm

40

1

(102.9cm

/

2

"

39 3/4"

(101cm)

)

Min.

Figure 7 - Rough Opening for Installing Peninsula Fireplace

Platform Must Be
Solid, Flat, and
Fully Supported

* As required by design as long as ceiling clearance is maintained.

Figure 8 - Rough Opening for Installing Peninsula Fireplace on
Platform

"

8

/

5

)

m

3

c

2

0

6

(

39 3/4"

(101cm)

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Figure 9 - Rough Opening for Installing See-Thru Fireplace

4

3

1

(

/

1

4

0

9

.

8

c

Min.

"
m

)

105706-01B

PRE-INSTALLATION PREPARATION

Framing (Cont.)

GENERAL VENTING

Location of Vent Termination

7

7

PRE-INSTALLATION
PREPARATION

Continued

1" (2.5cm)

Dia. Hole

)

1"

(2.5cm

3"

2" (5.1cm)

Dia. Hole

2"

(5.1cm

)

3" (7.6cm)

Figure 10 - Hole Locations For Gas Line and Electric Wires for
Peninsula and See-Thru Fireplaces

10"

(25.4cm)

Square Min.

(7.6cm)

GENERAL VENTING

These models are approved for use with Simpson Dura-Vent 6 5/8"
direct-vent pipe components and terminations as well as both flex and
rigid Vanguard vent components.

Your fireplace is approved to be vented either through the side wall,
or vertically using the following guidelines:

• Only use Vanguard or Simpson Dura-Vent GS venting compo­nents or kits specifically approved for this fireplace.

• Minimum clearance between vent pipes and combustible mate­rials is 1" (2.5cm), except where stated otherwise.

• Combustible material may be flush with the top front of fire­place with a maximum thickness of 3/4".

• Do not recess venting terminals into a wall or siding.

• Install horizontal venting with a 1/4" rise for every 12" of
run toward the termination.

• You may paint the vent terminal with 450°F (232°C) heat-resis­tant paint to coordinate with the exterior finish.

• There must not be any obstruction such as bushes, garden sheds,
fences, decks, or utility buildings within 24" from the front of
the termination cap.

• Do not locate termination cap where excessive snow or ice build
up may occur. Be sure to clear vent termination area after snow
falls to prevent accidental blockage of venting system. When
using snow blowers, do not direct snow towards vent termina­tion area.

Height

Depends On

Installation

Figure 11 - Rough Opening for Installing Exterior Vent Terminal

Refer to Pages 10 through 16
for Horizontal and Vertical
Installation Details

Vertical Height

Depends on

Installation

o

90

Elbow

o

45

Elbow

3

26

/8"

(67cm)

Horizontal

Length Depends

on Installation

LOCATION OF VENT TERMINATION

When locating vent termination, it is important to observe the
minimum clearances shown in Figure 13, page 8. You will avoid
extra framing by positioning your fireplace against an already
existing framing member. The sides of the fireplace may be posi­tioned directly against combustible walls.

*Check with local codes or with the current CAN/CGA B149[.1 or
.2] Installation Codes for Canada or the USA Installations follow
the current National Fuel Gas Code, ANSI Z223.1/NFPA 54.

Figure 12 - Vent Opening Height

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105706-01B

GENERAL VENTING

8

GENERAL VENTING

D

E

V

B

L

F

V

A = clearance above grade, veranda, porch, deck, or balcony

[*12 inches (30.5cm) minimum]

B = clearance to window or door that may be opened

[12 inches (30.5cm) minimum]

C = clearance to permanently closed window [minimum 12 inches

(30.5cm) recommended to prevent condensation on window]

D = vertical clearance to ventilated soffit located above the terminal

within a horizontal distance of 24 inches (61cm) from the

center-line of the terminal [18 inches (45.7cm) minimum]
E = clearance to unventilated soffit [12 inches (30.5cm) minimum]
F = clearance to outside corner (see below)
G = clearance to inside corner (see below)
H = *not to be installed above a meter/regulator assembly within

36 inches (91.4cm) horizontally from the center-line of the regulator

vent shall not terminate directly above a side-walk or paved driveway which is located between two
single family dwellings and serves both dwellings*
only permitted if veranda, porch, deck or balconey is fully open on a minimum of 2 sides beneath the floor*

* as specified in CAN/SGA B149 (.1 or .2) Installation Codes (1991) for Canada or for U.S.A. installation follow

the current

Note: Local codes or regulations may require different clearances

C

V

B

TERMINATION CAP

National Fuel Gas Code, ANSI Z223.1

Continued

Fixed

Closed

Openable

V

Openable

B

AIR SUPPLY INLET

X

B

Fixed

Closed

J

V
A

X

I = clearance to service regulator vent outlet [*72 inches (182.9cm)

minimum]

J = clearance to non-mechanical air supply inlet to building or the

combustion air inlet to any other fireplace [*12 inches (30.5cm)
minimum]

K = clearance to a mechanical air supply inlet [*72 inches (182.9cm)

minimum]

L = clearance above paved side-walk or a paved driveway located on

public property [*84 inches (213.4cm) minimum]
M = clearance under veranda, porch, deck [*12 inches (30.5cm) minimum ]
N = clearance above a roof shall extend a minimum of 24 inches (61cm)

above the highest point when it passes through the roof surface and

any other obstruction within a horizontal distance of 18 inches (45.7cm)

Termination Clearances for Buildings with Combustible and Noncombustible Exteriors

Inside Corner

Outside Corner Recessed Location

N

H

V

B

G

G

GAS METER RESTRICTED AREA

I

M

V

(TERMINATION PROHIBITED)

N

G

V

G

X

K

V

A

A

Balcony with No Side Wall

G = Combustible 24" (61cm)

Noncombustible 18" (45.7cm)

V

G

V

A = 6" (15.2cm)

V

B

Balcony with Perpendicular Side Wall

H

V

Combustible &
Noncombustible
H = 24" (61cm)
J = 20" (50.8cm)

Figure 13 - Minimum Clearances for Vent Terminations

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B = 6" (15.2cm)

J

D

C

V

C = Maximum depth of 48" (121.9cm) for

recessed location

D = Minimum width for back wall of

recessed location ­Combustible - 38" (96.5cm)
Noncombustible - 24" (61cm)

E = Clearance from corner in

recessed location­Combustible - 6" (15.2cm)
Noncombustible - 2" (5.1cm)

C

E

105706-01B

VENTING INSTALLATION

VENTING INSTALLATION

Installation Precautions

Installation Planning

9

9

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.

WARNING: Seal all pipe to pipe connections with
high temperature silicone (600°F/316° C) every time
a vent connection is made. Before joining elbows
and pipes, apply a bead of high temperature silicone
sealant (GE RTV 106/Loctite RTV 81585) to the end of
the elbow or pipe. High temperature silicone must
also be used to re-seal any connections after main­tenance to venting system.

NOTICE: Do not seal termination cap to pipe. Cap
must be removable for servicing vent system.

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

INSTALLATION PRECAUTIONS

Consult local building codes before beginning the installation. The
installer must make sure to select the proper vent system for installa­tion . Before installing vent kit, the installer must read this fireplace
manual and vent kit instructions.

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

WARNING: This gas fireplace 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. Each gas
appliance must use a separate vent system. Do not
use common vent systems.

WARNING: Horizontal sections of this vent sys­tem require a minimum clearance of 2" from the top
of the pipe and 1" minimum to the sides and bottom.
Vertical sections of this system require a minimum of
1" clearance to combustible materials on all sides of
the pipe.

INSTALLATION PLANNING

There are two basic types of direct-vent installation:

• Horizontal Termination

• Vertical Termination
It is important to select the proper length of vent pipe for the type of

termination you choose. It is also important to note the wall
thickness.

For Horizontal Termination: Select the amount of vertical rise

desired. The horizontal run of venting must have 1/4" rise for every
12" of run towards the termination.

WARNING: Never run the vent downward as this
may cause excessive temperatures which could
cause a fire.

You may use one or two 90° elbows in this vent configuration. See
Horizontal Termination Configurations on page 12.

For Vertical Termination: Measure the distance from the fireplace

flue outlet to the ceiling. Add the ceiling thickness, the vertical rise in
an attic or second story, and allow for sufficient vent height above the
roofline. You may use one or two 90° elbows in this vent configura­tion. See Vertical Termination Configurations on pages 14 and 15.

Note:

You may use two 45° elbows in place of a 90° elbow. You

must follow rise to run ratios when using 45° elbows.
For two-story applications, firestops are required at each floor

level. If an offset is needed in the attic, additional pipe and elbows
will be required.

You may use a chase with a vent termination with exposed pipe on the
exterior of the house. See Installing Vent System in a Chase, page 10.

Your Vanguard direct-vent fireplace has been tested for a minimum
3' rise with a maximum 10" wall thickness. The maximum horizon­tal run is 20' with 8' vertical rise (see Installation for Horizontal

Termination, pages 10 and 11). The maximum vertical run is 30' (see
Installation for Vertical Termination, pages 13 and 14).

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.

105706-01B

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VENTING INSTALLATION

10

Installation Planning (Cont.)
Installation for Horizontal Termination

VENTING INSTALLATION

Continued

Installing Vent System in a Chase

A chase is a vertical box-like 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".

After framing the chase (see Framing on pages 6 and 7) install the
vent system by following the installation instructions.

INSTALLATION FOR HORIZONTAL
TERMINATION

90º

1' Minimum

45º

Figure 14 - Snorkel Termination

Snorkel

12" Minimum

Snorkel

CAUTION: Horizontally terminated venting con-

figurations require one foot of vertical rise from the 45°
elbow before any horizontal run can be made. Failure
to meet venting requirements may cause performance
problems and possible damage to the fireplace.

1. Determine the route your horizontal venting will take.

Note:

The location of the horizontal vent termination on
the exterior wall must meet all local and national building
codes and must not be blocked or obstructed.

WARNING: Do not recess vent terminal into a wall

or siding.

Snorkel terminations are available for terminations requiring a
vertical rise on the exterior of the building (see Figures 14 and

15). Snorkel kit SVK is also available (see page 17). Follow the
same installation procedures used for standard horizontal termi­nations. If installing the snorkel termination below grade (base­ment applications), you must provide proper drainage to pre­vent water from entering the snorkel termination (see Figure

15). Do not back fill around the snorkel termination.

2. Rigid vent pipes and fittings have special twist-lock connections.
Assemble the desired combination of pipe and elbows to the ap­pliance adaptor with pipe seams oriented towards the wall or floor.

Twist-lock Procedure: The female ends of the pipes and fittings

have four locking lugs (indentations). These lugs will slide straight
into matching slots on the male ends of adjacent pipes and fittings.
(All connections must be sealed with high temperature silicone seal­ant as specified in the second warning statement on page 9.) Push the
pipe sections together and twist one section clockwise approximately
one-quarter turn until the sections are fully locked. See Figure 16.

90º

1' Minimum

45°

Figure 15 - Snorkel Termination with Drainage Pipe

Female
Locking Lugs

Male Slots

Rigid Vent Pipe Flexible Vent Pipe

Figure 16 - Vent Pipe Connections

Spacer
Spring

12" Minimum

Adequate
Drainage

4" Clamp

4" Flex
Pipe

7" Clamp

7" Flex
Pipe

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105706-01B

VENTING INSTALLATION

Continued

Note:

Horizontal runs of vent must be supported every three feet.

Use wall straps for this purpose.
Flexible vent pipe must be installed with spacer springs every

12". See Figure 16, page 10. All connections must be clamped
tightly and sealed with high temperature silicone sealant as speci­fied in the second warning statement on page 9.

3. Attach vent pipe assembly to the fireplace. Set fireplace in
front of it’s permanent location to insure minimum clearances.
Mark the wall for a 10" square hole (for noncombustible ma­terial such as masonry block or concrete, a 7
hole is acceptable). See Figure 17. The center of the hole
should line up with the center-line of the horizontal rigid vent
pipe. Cut a 10"x10" (25.4cm x 25.4cm) square hole through
combustible exterior wall (7 1/2" [19.1cm] diameter hole if
noncombustible). Frame as necessary (see Figure 17).

4. Noncombustible Exterior Wall: Apply a bead of non-harden-
ing mastic around the outside edge of the vent cap. Position the
vent cap in the center of the 7 1/2" hole on the exterior wall with
the arrow on the vent cap pointing up. Attach the vent cap with
four wood screws prov id e d (see Figure 18).
wood screws with appropriate fasteners for stucco, brick, con­crete, or other types of siding.

1

Note

: Replace the

/2" diameter

Installation for Horizontal Termination (Cont.)

VENTING INSTALLATION

Combustible Exterior W all: For vinyl siding, stucco, or wood

11

11

exteriors, a siding standoff must be installed between the vent
cap and exterior wall. The siding standoff prevents excessive
heat from damaging siding materials. Siding materials must be
cut to accommodate standoff. Bolt the vent cap to the stand­off. Apply non-hardening mastic around outside edge of the
standoff. Position the standoff/cap assembly in the center of
the 10" square hole and attach to exterior wall with wood screws
provided (see Figure 19). The siding standoff must sit flush
against the exterior fascia material.

5.

Combustible Exterior Wall Only: Slide the interior wall

firestop over the vent pipe before connecting the horizontal
run to the vent cap (see Figure 20).

6. Carefully move the fireplace with vent assembly attached to­ward the wall and insert the vent pipe into the horizontal termi­nation. The pipe overlap should be a minimum of 1 1/4". Fasten
all vent pipe connections (except vent cap) with screws pro­vided. Refer to Fr aming on pages 6 and 7 for instructions on
securing unit to framing or floor.

7. Combustible Exterior Wall Only: Slide the wall firestop
against the interior wall surface and attach with screws pro­vided (see Figure 20).

WARNING: Do not recess vent termination in to

any wall. This will cause a fire hazard.

Figure 17 - Vent Opening Requirements

Vent Cap

Wood Screw

Figure 18 - Installing Horizontal Vent Cap
(Noncombustible Exterior)

Cut Vinyl Siding
Away to Fit Standoff

Standoff

Wood Screw

Vent Cap

Bolt

Apply Mastic
to All Four Sides

Figure 19 - Installing Vinyl Siding Standoff (Combustible
Exterior Wall)

Interior Wall
Surface

Interior Wall Firestop
(Combustible
Exterior Wall Only)

Horizontal
Vent Pipe

Vent Cap
(Horizontal
Termination)

Figure 20 - Connecting Vent Cap with Horizontal Vent Pipe

Screw

105706-01B

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For more information, visit www.desatech.com