Vanguard VDVF36PN Quick start guide

Save this manual for future reference.
OWNER’S OPERATION AND INSTALLATION MANUAL
DIRECT-VENT GAS FIREPLACE HEATER
®
®
VDVF36PN/PP (PENINSULA) AND VDVF36STN/STP (SEE THRU)
This appliance may be installed in an aftermarket* permanently located, manufactured (mobile) home, where not
prohibited by state or local codes.
This appliance is only for use with the type of gas indicated on the rating plate.
This appliance is not convertible for use with other gases, unless a certified kit is used.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer.
— Donotstoreorusegasolineorotherflammable
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.
• Ifyoucannotreachyourgassupplier,callthe
fire department.
— Installationandservicemustbeperformedbya
qualified installer, service agency, or the gas
supplier.
SAVE THIS BOOK
Thisbookisvaluable.Inadditiontoinstructing
you on how to install and maintain your appli-
ance, 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.
Refertothismanual.Forassistance
or additional information consult a
qualified installer, service agency,
or the gas supplier.
CHECK LOCAL CODES PRIOR TO INSTALLATION
WARNING: If the information in these instruc-
tions is not followed exactly, a fire or explosion
may result causing property damage, personal
injury, or loss of life.
WARNING: This Direct-Vent Gas
Fireplace Heater series is intended
for use with Natural or Propane/LP
gasonly.Donotattempttoburnany
solid fuels in these appliances.
(Peninsula
Shown)

2
105706
DIRECT-VENT GAS FIREPLACE HEATER
VDVF36P and VDVF36ST Series
®
FRONTVIEW
30
(76cm)
(Opening)
23
5
/ 8 (60cm)
25 (64cm)
RIGHT SIDE
22
5
/ 8
(57cm)
43
1
/ 8 (110cm)
32 (81cm) (Opening) 1
7
/ 8 (5cm)
1
1
/ 4 (3cm)
BACKVIEW
39
3
/ 4
(101cm)
26
3
/ 8
(67cm)
3 (8cm) 1 (3cm) 2 (5cm)
3 (8cm)
22
5
/ 8
(57cm)
34
3
/ 4
(88cm)
TOP VIEW
(Left Side)
(Right Side)
(Front)
(Back)
23
5
/ 8
(60cm)
11
15
/ 16
(30cm)
10
1
/ 2
(27cm)
ø1.5
(4cm) ø1.5 (4cm)
11
1
/ 8
(28cm)
FRONTVIEW
30
(76cm)
(Opening)
25 (64cm)
19
7
/ 8 (50cm)
(Opening)
RIGHT SIDE
1
1
/ 4 (3cm)
22
5
/ 8
(57cm)
41
1
/ 8 (104cm)
32 (81cm) (Opening) 1
7
/ 8 (5cm)
39
3
/ 4
(101cm)
26
3
/ 8
(67cm)
3 (8cm) 1 (3cm) 2 (5cm)
22
5
/ 8
(57cm)
34
3
/ 4
(88cm)
3 (8cm)
BACK VIEWTOP VIEW
(Left Side)
(Right Side)
(Front)
(Back)
23
5
/ 8
(60cm)
10
1
/ 2
(27cm)
ø1.5
(4cm) ø1.5 (4cm)
10
1
/ 2
(27cm)
11
15
/ 16
(30cm)
Figure 1 - VDVF36PN/PP (Peninsula) Dimensions
Back of
Surround
Back of
Surround
Figure 2 - VDVF36STN/STP (See Thru) Dimensions
Left Side
Surround
Right Side
Surround
Rating Plate
Location
Left Side
Surround
Right Side
Surround
GLOSSARY OF
TERMS
Chase - A box-like enclosure to protect
ventingfromtheelementswhentheventing
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 termination above ground
level clearances.
Vent Terminal - Mounted on an outside
wallorrooftoseparatetheinletandoutletof
theventsystemandprotectitfromweather.
VinylSidingStandoff-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.
Alternate Gas
Supply Inlets
Alternate Gas
Supply Inlets
Rating Plate
Location
Note: All dimensions in this manual are in inches unless otherwise specified.

3
105706
OWNER’S MANUAL
Models VDVF36PN/PP series are three-
sided direct-vent gas fireplace heaters with
a sealed combustion chamber. Models
VDVF36STN/STP series are two-sided di-
rect-vent gas fireplace heaters with a sealed
combustionchamber. All models use a mil-
livolt 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.
INTRODUCTION
WARNING: Installation and
repair should be done by a quali-
fiedserviceperson.Theappliance
should be inspected before use,
andatleastannuallythereafterby
a qualified service person. More
frequentcleaningmayberequired
due to excessive lint from carpet-
ing, bedding, pet hair, etc. It is
imperative that the control com-
partments, burners, and circulat-
ing air systems be kept clean.
NOTICE: This appliance is in-
tendedtobeusedonlyforsupple-
mental heat.
• 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,pleasechecktheAGA/CGAratingplate
locatedattheinterioroftheapplianceopen-
ing or consult your local distributor (see
Figures 1 and 2, page 2).
BEFORE YOU BEGIN
Before beginning the installation of your
appliance, read these instructions through
completely.
ThisDESAapplianceanditsapprovedcom-
ponentsaresafewheninstalledaccordingto
this installation manual and operated as
recommended by DESA. Unless you use
DESA approved components tested for this
appliance,YOUMAYCAUSEASAFETY
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 manufactured by
DESA unless otherwise permitted in
writing by DESA.
B) The use of any components part not ap-
proved by DESA in combination with
this DESA appliance.
C) Installation and/or operation in a man-
nerother than instructed in this manual.
D) The burning of anything other than the
type of gas approved for use in this gas
appliance.
NOTICE: Check local building
codes for area requirements be-
fore installing this appliance.
This appliance, when installed, must be elec-
trically grounded in accordance with local
codes,orintheabsenceoflocalcodes,withthe
National Electrical Code, ANS/NFPA 70 or
the Canadian Electrical Code, CSA C22.1.
The installation must conform with local
codesor, in the absence of local codes, with
theNationalFuelGasCode,ANSZ223.1or
theCanadianInstallationCode,CAN/CGA
B149.
This appliance complies with ANS Z21.88-
1998 and CSA 2.33-M98 as a VENTED
GASFIREPLACEHEATER.Itislistedand
tested by International Approval Services.
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 4).
2. Consider a location where heat output
wouldnot be affectedby drafts, air con-
ditioning ducts, windows, or doors.
3. A location that avoids the cutting of
joists or roof rafters makes installation
easier.
SELECTING
LOCATION
In selecting a location, the following pre-
cautions must be observed:
1. A projection may be ideal for a new ad-
dition on an existing finished wall. See
Horizontal Termination Configuration,
pages 10 and 11, or Vertical Termina-
tion Configuration, pages 13 and 14.
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 lo-
cate this appliance in high traffic areas
or near furniture and draperies.
5. This fireplace may be installed in bed-
roomsor bathrooms in accordance with
local codes.
6. Never obstruct the openings of the ap-
pliance or flow of ventilation air. Keep
the control compartments accessible.
7. Do not use this appliance if any part
has been under water. Immediately
contact a local service technician to ex-
amine 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

4
105706
DIRECT-VENT GAS FIREPLACE HEATER
VDVF36P and VDVF36ST Series
®
FRAMING
Oncethefinallocationhasbeendetermined,
observing height clearances for vent termi-
nation, you may construct framing using
dimensions shown in Figures 7 through 9,
page 5, depending on your installation.
If the appliance is to be installed directly on
carpeting, tile (other than ceramic), or any
combustiblematerialotherthanwoodfloor-
ing, the appliance must be installed on a
metalorwoodpanelextendingthefullwidth
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.
CLEARANCES
Minimum clearances to combustibles are:
• Back and Sides
of Surround: .............................0" min.
• Vent Surfaces: ............ 1" (2.5cm) min.
• Ceiling to Opening:... 36" (91cm) min.
• Floor: ........................................0" min.
• Wall to Front of Glass:36" (91cm) min.
• Perpendicular Wall to
Opening of Unit: ........... 2" (5cm) min.
• Top Spacer: ..............................0" min.
Figure 4 - Minimum Clearances (Peninsula Shown)
Figure 5 - Minimum Clearances (See Thru Shown)
CAUTION: Do not block re-
quired air spaces with insula-
tionoranyothermaterial.Donot
obstructtheeffectiveopeningof
the appliance with any type of
facing material.
MANTEL CLEARANCES
Woodwork, such as wood trims, mantles,
and other combustible materials projecting
no more than 1 1/2inches (3.8cm) shall not
beplacedwithin7inches(17.8cm)fromthe
opening of the unit. Combustible material
above and projecting more than 1 1/2inches
(3.8cm) from the appliance’s face must not
beplaced lessthan15inches (38.1cm)from
the opening of the appliance (see Figure 6).
Figure6- MantelClearancesforPeninsula
and See Thru Fireplaces (Peninsula
Shown)
PRE-INSTALLATION
PREPARATION
CEILING
WALL
36"
(914mm)
Min.
36"
(914mm)
Min. 0" Floor
12"
(305mm)
Min.
21"
(533mm)
Min. 15"
(381mm)
Min.
4"
(102mm)
Min.
7" (178mm)
Min.
1
1
/ 2 " (38mm)
Min.
UNIT
Spacer
2 x 4
Combustible
Material May
Be Used
Drywall (Gypsum
Board, Sheetrock, Etc.)
Safe Zone for
Projection of
Combustible
Material
0"
36"
(914mm)
2" (51mm)
Wall In Front Of Glass
36" (91cm) Min.
Perpendicular
Wall 2" (51mm)
Min. From Opening
Right Side
Surround
(0" Min.)
Left Side
Surround
(0" Min.)
TOP VIEW
Combustible
Material
Drywall
2 x 4 Stud
Minimum 1"
Clearance from Side
(Only for See Thru)

5
105706
OWNER’S MANUAL
Figure 7 - Rough Opening for Installing
Peninsula Fireplace
39
3
/ 4 "
(1010mm)
Min.
40
1
/
2
"
(1029mm)
23
5
/
8
"
(600mm)
39
3
/ 4 "
(1010mm)
Min.
40
1
/
2
"
(1029mm)
23
5
/
8
"
(600mm)
*
Figure 8 - Rough Opening for Installing
Peninsula Fireplace on Platform
* As required by design as long as ceiling
clearance is maintained.
Platform Must Be
Solid, Flat, and
Fully Supported
39 3/4"
(1010mm)
Min.
43
1
/4"
(1098mm)
23
5
/
8
"
(600mm)
Figure 9 - Rough Opening for Installing
See Thru Fireplace
3" (76mm)
1" (25mm)
Dia. Hole
3"
(76mm)
2" (51mm)
Dia. Hole
1"
(25mm)
2"
(51mm)
Height
Depends On
Installation
10"
(254mm)
Square Min.
Figure 10 - Hole Locations For Gas Line
and Electric Wires for Peninsula and See
Thru Fireplaces
Figure 11 - Rough Opening for Installing
Exterior Vent Terminal
These models are approved for use with
Simpson Dura-Vent 6 5/8" direct-vent pipe
componentsandterminationsaswellasboth
flex and rigid Vanguard vent components.
Yourfireplaceisapprovedtobeventedeither
through the side wall, or vertically using the
following guidelines:
• Only use Vanguard or Simpson Dura-
Vent GS venting components or kits spe-
cifically approved for this fireplace.
• Minimum clearance between vent pipes
andcombustiblematerials is 1" (25 mm),
except where stated otherwise.
• Combustible material may be flush with
the top front of fireplace with a maxi-
mum 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 ter-
mination.
• You may paint the vent terminal with
450°F (232°C) heat-resistant paint to co-
ordinate 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 ex-
cessive snow or ice build up may occur.
Be sure to clear vent termination area af-
tersnowfallstoprevent accidental block-
age of venting system.When using snow
blowers,do not direct snow towards vent
termination area.
LOCATION OF VENT
TERMINATION
Whenlocatingventtermination,itisimpor-
tant to observe the minimum clearances
shown in Figure 13, page 6. You will avoid
extra framing by positioning your fireplace
against an already existing framing mem-
ber. The sides of the fireplace may be posi-
tioned directly against combustible walls.
*Checkwithlocal codes or withthecurrent
CAN/CGAB149[.1or.2]InstallationCodes
for Canada or the USA Installations follow
the current National Fuel Gas Code, ANS
Z223.1, also known as NFPA 54.
GENERAL VENTING
Vertical Height
Depends on
Installation
26 3/8"
(670mm)
Horizontal
Length Depends
on Installation
90
o
Elbow
45
o
Elbow
PRE-INSTALLATION
PREPARATION
Continued
Refer to Pages
8 through 14
for Horizontal
and Vertical
Installation
Details
Figure 12 - Vent Opening Height
Continued

6
105706
DIRECT-VENT GAS FIREPLACE HEATER
VDVF36P and VDVF36ST Series
®
Fixed
Closed Openable Fixed
Closed
Openable
V
V
V
V
VV
V
V
X
X
VX
G
G
J
F
B
B
K
N
H
I
A
N
E
L
D
B
M
A
C
B
V
V
A
G
G
B
TERMINATION CAP AIR SUPPLY INLET GAS METER RESTRICTED AREA
(TERMINATION PROHIBITED)
A = clearance above grade, veranda, porch, deck, or balcony
[*12 inches (305mm) minimum]
B = clearance to window or door that may be opened
[12 inches (305mm) minimum]
C = clearance to permanently closed window [minimum 12 inches
(305mm) recommended to prevent condensation on window]
D = vertical clearance to ventilated soffit located above the terminal
within a horizontal distance of 24 inches (610mm) from the
center-line of the terminal [18 inches (457mm) minimum]
E = clearance to unventilated soffit [12 inches (305mm) 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 (914mm) horizontally from the center-line of the regulator
I = clearance to service regulator vent outlet [*72 inches (1829mm)
minimum]
J = clearance to non-mechanical air supply inlet to building or the
combustion air inlet to any other fireplace [*12 inches (305mm)
minimum]
K = clearance to a mechanical air supply inlet [*72 inches (1829mm)
minimum]
L = † clearance above paved side-walk or a paved driveway located on
public property [*84 inches (2133mm) minimum]
M = clearance under veranda, porch, deck [*12 inches (305mm) minimum ‡]
N = clearance above a roof shall extend a minimum of 24 inches (610mm)
above the highest point when it passes through the roof surface and
any other obstruction within a horizontal distance of 18 inches (457mm)
† 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
National Fuel Gas Code, ANS Z223.1
Note: Local codes or regulations may require different clearances
A = 6" (152mm)
Inside Corner
V
B
E
V
B = 6" (152mm)
C = Maximum depth of 48" (1219mm) for
recessed location
D = Minimum width for back wall of
recessed location -
Combustible - 38" (965mm)
Noncombustible - 24" (610mm)
E = Clearance from corner in
recessed location-
Combustible - 6" (152mm)
Noncombustible - 2" (51mm)
Outside Corner Recessed Location
G
H
G = Combustible 24" (610mm)
Noncombustible 18" (457mm)
Balcony with No Side Wall
V
J
Combustible &
Noncombustible
H = 24" (610mm)
J = 20" (508mm)
Balcony with Perpendicular Side Wall
CDC
Termination Clearances for Buildings with Combustible and Noncombustible Exteriors
Figure 13 - Minimum Clearances for Vent Terminations
GENERAL VENTING Continued

7
105706
OWNER’S MANUAL
WARNING: Read all instruc-
tions completely and thoroughly
before attempting installation.
Failure to do so could result in
serious injury, property damage
or loss of life. Operation of im-
properlyinstalledandmaintained
venting system could result in
serious injury, property damage
or loss of life.
WARNING:Sealallofthecon-
nections with high temperature
silicone(600°F/316°C)everytime
a vent connection is made. Be-
fore joining elbows and pipes,
applyabeadofhightemperature
silicone sealant (GE RTV 106/
Loctite RTV 81585) to the end of
the elbow or pipe. High tempera-
ture silicone must also be used
to re-seal any connections after
maintenance to venting system.
NOTICE: Failure to follow these
instructionswillvoidthewarranty.
INSTALLATION
PRECAUTIONS
Consultlocalbuildingcodesbeforebeginning
the installation. The installer must make sure
to select the proper vent system for installa-
tion. Before installing vent kit, the installer
mustread this fireplace manual and vent kit
instructions.
Only a qualified service person should in-
stall venting system. The installer must fol-
low 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 war-
ranty on your venting system:
• Installation of any damaged venting
component
• Unauthorized modification of the vent-
ing system
VENTING
INSTALLATION
WARNING:Thisgasfireplace
and vent assembly must be
vented directly to the outside.
TheventingsystemmustNEVER
beattachedtoachimneyserving
a separate solid fuel burning ap-
pliance.Eachgasappliancemust
use a separate vent system. Do
not use common vent systems.
WARNING: Horizontal sec-
tions of this vent system require
a minimum clearance of 2" from
the top of the pipe and 1" mini-
mum to the sides and bottom.
Vertical sections of this system
require a minimum of 1" clear-
ancetocombustiblematerialson
all sides of the pipe.
• Installation of any component part not
manufactured or approved by DESA
International
• Installation other than as instructed by
these instructions
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
amountof vertical risedesired. The horizon-
tal run of venting must have 1/4" rise for
every 12" of run towards the termination.
NOTICE: Treatment of firestops
andconstructionofthechasemay
vary from building type to build-
ing type. These instructions are
not substitutes for the require-
mentsoflocalbuildingcodes.You
must follow all local building
codes.
Note: Wheninstallinginachase,youshould
insulate the chase as you would the outside
walls of your home. This is especially im-
portant in cold climates. Minimum clear-
ance between vent pipes and combustible
materials such as insulation is 1".
After framing the chase (see Framing on
pages 4 and 5) install the vent system by
following the installation instructions.
Installing Vent System in a Chase
A chase is a vertical box-like structure built
to enclose venting that runs along the out-
sideofabuilding.Achaseisnotrequiredfor
such venting.
Continued
WARNING:Neverrunthevent
downward as this may cause ex-
cessive temperatures which
could cause a fire.
You may use one or two 90°elbows in this
ventconfiguration.SeeHorizontalTermina-
tion Configurations on pages 10 and 11.
For Vertical Termination: Measure the
distance from the fireplace flue outlet to the
ceiling. Add the ceiling thickness, the verti-
cal 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
ventconfiguration.SeeVerticalTermination
Configurations on pages 13 and 14.
Note: Youmayusetwo45°elbowsinplace
of a 90°elbow. You must follow rise to run
ratios when using 45°elbows.
For two-story applications, firestops are re-
quired at each floor level. If an offset is
needed in the attic, additional pipe and el-
bows will be required.
Youmayuseachasewithaventtermination
with exposed pipe on the exterior of the
house.SeeInstallingVentSysteminaChase,
below.
Your Vanguard direct-vent fireplace has
been tested for a minimum 3' rise with a
maximum 10" wall thickness. The maxi-
mum horizontal run is 20' with 8' vertical
rise (see Installation for Horizontal Termi-
nation, page 8). The maximum vertical run
is30'(seeInstallationforVerticalTermina-
tion, page 12).
It is very important that the venting system
maintain its balance between the combus-
tion air intake and the flue gas exhaust.
Certain limitations apply to vent configura-
tions and must be strictly followed.

8
105706
DIRECT-VENT GAS FIREPLACE HEATER
VDVF36P and VDVF36ST Series
®
INSTALLATION FOR
HORIZONTAL TERMINATION
1. Determine the route your horizontal
venting will take. Note: The location
of the horizontal vent termination on
theexteriorwallmustmeet all local and
national building codes and must not
be easily blocked or obstructed.
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(seepage 15). Follow the same
installationproceduresusedforstandard
horizontal terminations. If installing the
snorkel termination below grade (base-
ment 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 spe-
cial twist-lock connections. Assemble
the desired combination of pipe and el-
bows to the appliance adaptor with pipe
seamsorientedtowards the wallorfloor.
Twist-lock Procedure: The female
ends of the pipes and fittings have four
locking lugs (indentations). These lugs
willslide straight into matching slots on
the male ends of adjacent pipes and fit-
tings. (All connections must be sealed
with high temperature silicone sealant
asspecifiedinthesecond warningstate-
ment on page 7.) Push the pipe sections
togetherandtwistonesectionclockwise
approximatelyone-quarterturnuntil the
sectionsare fully locked. See Figure16,
page 9. Note: Horizontal runs of vent
must be supported every three feet. Use
wall straps for this purpose.
Flexibleventpipe must be installed with
spacerspringsevery12". See Figure 16,
page 9.All connectionsmust be clamped
tightlyandsealedwith high temperature
silicone sealant as specified in the sec-
ond warning statement on page 7.
VENTING
INSTALLATION
Continued
Figure 15 - Snorkel Termination with Drainage Pipe
Adequate
Drainage
12" Minimum
Figure 14 - Snorkel Termination
Snorkel
12" Minimum
WARNING:Donotrecessvent
terminal into a wall or siding.
Snorkel
1' Minimum
90º
45°
1' Minimum
90º
45º

9
105706
OWNER’S MANUAL
UP
UP
VENTING
INSTALLATION
Continued
(Framing
Detail)
10"
(254mm)
10"
(254mm)
7 1/2"
(190mm)
Vent Opening
Combustible Wall
Vent Opening
Non-Combustible Wall
Figure 17 - Vent Opening Requirements
Continued
3. Attach vent pipe assembly to the fire-
place. Set fireplace in front of it’s per-
manent location to insure minimum
clearances. Mark the wall for a 10"
square hole (for noncombustible ma-
terial such as masonry block or con-
crete, a 7 1/2" diameter hole is accept-
able). 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" (254mm x 254mm)
square hole through combustible ex-
terior wall (7 1/2" [190mm] diameter
hole if noncombustible). Frame as nec-
essary (see Figure 17).
Figure19-InstallingVinylSidingStandoff
Cut Vinyl Siding
Away to Fit
Standoff
Wood Screw
Nut Bolt
Standoff
Vent Cap
Figure 16 - Vent Pipe Connections
Female
Locking
Lugs
Male
Slots
Rigid Vent Pipe Flexible Vent Pipe
Spacer
Spring
4" Clamp
7" Clamp
4" Flex
Pipe
7" Flex
Pipe
Apply Mastic
to All Four Sides
Figure 18 - Installing HorizontalVent Cap
Wood
Screw
Vent Cap
Apply Mastic
to All Four
Sides
WARNING:Donotrecessvent
termination in to any wall. This
will cause a fire hazard.
4. Apply a bead of non-hardening mastic
aroundthe outside edge of the vent cap.
Position the vent cap in the center of
the 7 1/2" or 10" hole on the exterior
wall with the arrow on the vent cap
pointing up. Insure proper clearance of
1" to combustibles is maintained. At-
tach the ventcap with fourwoodscrews
supplied (see Figure 18). Note : Re-
place the wood screws with appropri-
atefasteners for stucco, brick, concrete,
or other types of siding.
For vinyl siding use vinyl siding stand-
offs between vent cap and exterior wall.
The vinyl siding standoff prevents ex-
cessive heat from melting the vinyl sid-
ing material. Bolt the vent cap to the
standoff. Apply non-hardening mastic
around outside edge of the standoff in-
stead of the vent cap assembly. Use
wood screws provided to attach the
standoff. See Figure 19.
5. Slide the wall thimble over theventpipe
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.Thepipeoverlap should be
a minimum of 1 1/4". Apply silicone to
the connection. Fasten all vent connec-
tions with screws provided. Refer to
Framing on pages 4 and 5 for instruc-
tionsonsecuringunit to framing or floor.
7. Slide the wall thimble against the inte-
riorwall surface and attach with screws
provided (see Figure 20).
Vent Cap
(Horizontal
Termination)
Interior Wall
Surface
Wall
Thimble
Horizontal
Vent Pipe
Figure 20 - Connecting Vent Cap with
Horizontal Vent Pipe
Screw

10
105706
DIRECT-VENT GAS FIREPLACE HEATER
VDVF36P and VDVF36ST Series
®
VENTING
INSTALLATION
Continued
UP
Figure 21 - Horizontal Termination Configuration for Rigid Venting Using One
90 ° Elbow
Figure 22 - Horizontal Termination Using Flexible Venting
HorizontalVenting
Vertical (V) Horizontal (H)
49.5" min. 15" max.
(45°elbow, 1' vertical pipe, 90°elbow)
61.5" min. 34" max.
73.5" min. 58" max.
85.5" min. 10' max.
102.5" min. 20' max.
UP
Horizontal Venting
See information in
Figure 21 for
Vertical(V) and
Horizontal(H) maxi-
mums and minimums.
The same amounts
apply for flexible
venting.
FGFVK Vent Kit Shown
Horizontal Termination
Configurations
Figures 21 through 23 show different con-
figurations for venting with horizontal ter-
mination. Each figure includes a chart with
vertical minimum/maximum and horizon-
tal maximum dimensions which must be
met. All connections must be sealed with
high temperature silicone sealant as speci-
fied in the second warning statement on
page 7. All horizontal terminations require
1/4" rise per 12" of horizontal run.
Note: The 30°Starter
Elbow Must Be
Discarded and
Replaced with a 45°
Starter Elbow.
45°Starter
Elbow
Required