Lennox Hearth ADAGIO-MP User Manual

INSTALLATION INSTRUCTIONS MANUAL

US

TM

Direct-Vent Gas

Fireplace Heaters

Millivolt Models ..Electronic Model
ADAGIO-MN
ADAGIO-MP

Installer: Leave This Manual With The Appliance.

Consumer: Retain This Manual For Future Reference.

A French manual is available upon request. Order P/N 850,044CF.

Ce manuel d’installation est disponible en francais, simplement

en faire la demande. Numéro de la pièce 850,044CF.

..... ADAGIO-EN

P/N 850,044M Rev. D, 06/2008

In the Commonwealth of Massachusetts:

• Installation must be performed by a licensed plumber or gas fitter

• See Table of Contents for location of additional Commonwealth of
Massachusetts requirements

Report No. 116-F-48-5

Adagio™ Series

These appliances 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 unless a certified kit is used.

WARNING: If the information in these instructions
are 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 or liquids in the vicinity of this or any other
appliance.

WHAT TO DO IF YOU SMELL GAS:

• Do not 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 your gas supplier's

instructions.

• If your gas supplier cannot be reached, call
the fire department.

AVERTISSEMENT : S’assurer de bien suivre les instruc­tions données dans ce guide pour minimiser les risques
d’incendie ou d’explosion pouvant entraîner des dom­mages matériels, des blessures ou la mort.

Ne pas entreposer ni utiliser d’essence ou d’autres produits
ou liquides inflammables à proximité de cet appareil ou
de tout autre appareil de chauffage.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:

• Ne pas tenter d’allumer l’appareil.

• Ne pas toucher aux interrupteurs électriques; ne pas
utiliser un téléphone dans le bâtiment.

• Aller immédiatement chez un voisin pour téléphoner
au fournisseur du gaz et suivre leurs instructions.

• Si le fournisseur de gaz n’est pas disponible, appeler
les pompiers.

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

L’installation et l’entretien doivent être assurés par un
installateur certifié, une société de service spécialisée
ou le fournisseur de gaz.

TABLE OF CONTENTS

Packaging .........................................Page 2

Introduction ......................................Page 2

General Information ..........................

Appliance and Vent Clearances ........

New York City, New York (MEA) ........

Requirements for Commonwealth

of Massachusetts ............................

Location ............................................Page 5

Cold Climate Insulation .....................

Manufactured Home Requirements ..

Appliance and Vent Clearances .........

Vent Termination Clearances ............

Typical Installation Sequence ...........

Detailed Installation Steps .................

Step 1. Framing ...............................

Framing Specifications ......................

Fireplace Specifications .....................

Facade Specifications ........................

Step 2. Routing Gas Line ................

Step 3. Install the Vent System .......

Vertical Termination Systems ............

Vent Section Length Chart ................

Vertical Vent Tables and Figures ........

Horizontal Termination System .........

Horizontal Vent Tables and Figures ...

Venting Using Flexible Vent Pipe .......

Step 4. Field Wiring .........................

Step 5. Optional Blower Kit Wiring ..

Step 6. Removing Glass Door ..........

Step 7. Connecting Gas Line .............

Step 8. Install Firebox Liner Kit .........

Step 9. Installing Logs .....................

Step 10. Checking Unit Operation .....

Step 11. Burner Adjustments ............

Finishing Requirements ....................

Hearth Extension ...............................

Installation Accessories ....................

Gas Conversion Kits ..........................

This manual is part of a set of two supporting
this product. Refer to manual 875,037M for
Care and Operation.

Please read and understand these
instructions before beginning your

installation.

Page 2
Page 4
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Page 31

PACKAGING

The assembled vented gas fireplace heater is
packaged with the following:

1 - The logs are packaged in a carton located

within the firebox.

2 - One plastic bag of glowing embers, located

in the bottom compartment.

3 - One envelope containing the litera

ture package, which consists of the
care and operation manual, installation
instructions manual and the warranty. The
envelope is located in the bottom compart
ment.

4 - One log support bracket is located inside

the firebox of the appliance.

INTRODUCTION

These fireplaces are designed, tested and listed
for operation and installation with, and only with,

Secure Vent™ Direct Vent System Components,
Secure Flex™ Flexible Vent Components manu-

factured by Security Chimneys International and
Z-Flex™ Model GA Venting Systems, listed to
UL1777 and ULCS635 manufactured by Flex
master Canada Limited. These approved vent
system components are labeled for identifica
tion. DO NOT use any other manufacturer's vent
components with these appliances.

Millivolt appliances are designed to operate on
natural or propane gas. A millivolt gas control
valve with piezo ignition system provides safe,
efficient operation. External electrical power
is required to operate the optional blower if
installed in these units.

Electronic appliances are designed to operate on
natural or propane gas. An electronic intermit
tent pilot ignition system provides safe, efficient
operation. External electrical power is required
to operate these units.

These appliances comply with National Safety
Standards and are tested and listed by OMNI­Test Laboratories (Report No.
to ANSI Z21.88 (in Canada, CSA-2.33), and
CAN/CGA-2.17-M91 (Gas-Fired Appliances For
Use At High Altitudes) in both USA and Canada,
as vented gas fireplace heaters.

Both millivolt and electronic versions of
these appliances are listed by OMNI-Test
Laboratories for installation in bedrooms and
manufactured (mobile) homes.

116-F-48-5)

These fireplaces are designed as supplemen
tal heaters. Therefore, it is required to have
an alternate heat source when installed in a

dwelling.

The appliance, when installed, must be electri
cally grounded in accordance with local codes
or, in the absence of local codes, with the

National Electrical Code, ANSI/NFPA 70-latest

-

edition, or the Canadian Electrical Code, CSA
C22.1-latest edition.

DO NOT ATTEMPT TO ALTER OR MODIFY

-

THE CONSTRUCTION OF THE APPLIANCE OR
ITS COMPONENTS. ANY MODIFICATION OR
ALTERATION MAY VOID THE WARRANTY,
CERTIFICATION AND LISTINGS OF THIS
UNIT.

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 qualified installer, service
agency or the gas supplier.

GENERAL INFORMATION

Note: Installation and repair should be per­formed by a qualified service person. The appli­ance should be inspected annually by a qualified
professional service technician. More frequent

-

inspections and cleanings may be required due to
excessive lint from carpeting, bedding material,
etc. It is imperative that the control compartment,
burners and circulating air passage ways of the
appliance be kept clean.

S'assurer que le brùleur et le compartiment des
commandes sont propres. Voir les instructions
d'installation et d'utilisation qui accompagnent
l'appareil.

Provide adequate clearances around air open
ings and adequate accessibility clearance for
service and proper operation. Never obstruct
the front openings of the appliance.

-

-

-

The Installation must conform to local codes or,
in the absence of local codes, with the National

Fuel Gas Code, ANSI Z223.1/NFPA 54-latest edi-

2

tion, or the Natural Gas and Propane Installation
Code, CAN/CSA-B149-latest edition.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

These appliances are designed to operate on
natural or propane gas only. The use of other

fuels or combination of fuels will degrade
the performance of this system and may be
dangerous.

Millivolt Models -

Millivolt models come standard with the manu
ally-modulated gas valve; flame appearance and
heat output can be controlled at the gas valve.

Input of millivolt models is shown in the fol
lowing table:

Input (BTU/HR) Manually-Modulated Gas

Valves (millivolt models)

Model NATURAL GAS

ADAGIO-MN

ADAGIO-MP

(BTU / HR)

13,000 high

10,000 low

-------------

PROPANE GAS

(BTU / HR)

-------------

13,000 high

10,000 low

Table 1

Manifold Gas Supply Pressure

(all models)

Fuel # Low High

Natural

Gas

-

Propane

Table 4

-

(Lo) 2.2" WC

(.55 kPa)

(Lo) 6.3" WC

(1.57 kPa)

(Hi) 3.5" WC

(Hi) 10.0" WC

(2.49 kPa)

Test gauge connections are provided on the
front of the millivolt and electronic gas control
valve (identified IN for the inlet and OUT for
the manifold side). The control valves have a
3/8" (10 mm) NPT thread inlet and outlet side
of the valve.

These appliances must be isolated from the
gas supply piping system (by closing their
individual manual shut-off valve) during any
pressure testing of the gas supply piping
system at test pressures equal to or

than 1/2 psig (3.5 kPa).

(.87 kPa)

less

WARNING

Propane tanks are at pressures
that will cause damage to valve
components. Verify that the
tanks have step down regulators
to reduce the pressure to safe
levels.

The millivolt appliances are manually controlled
and feature a spark igniter (piezo) that allows the
appliance's pilot gas to be lit without the use of
matches or batteries. This system provides con
tinued service in the event of a power outage.

Do not use these appliances if any part has
been under water. Immediately call a qualified,
professional service technician to inspect the
appliance and to replace any parts of the control
system and any gas control which have been
under water.

-

Electronic Models -

Electronic models have a manually modulated
gas valve. Input of electronic models is shown

in the following table:

Input (BTU/HR) Electronic Models

Model NATURAL GAS

ADAGIO-EN

ADAGIO-EP

if field converted

(BTU / HR)

13,000 high

10,000 low

-------------

PROPANE GAS

(BTU / HR)

-------------

13,000 high

10,000 low

Table 2

Gas Pressure - All Models

Tables 3 and 4 show the appliances' inlet and
manifold gas pressure.

Inlet Gas Supply Pressure

(all models)

Fuel # Minimum Maximum

Natural Gas

Propane

5.0" WC

(1.24 kPa)

11.0" WC

(2.74 kPa)

10.5" WC

(2.61 kPa)

13.0" WC

(3.23 kPa)

Table 3

These appliances and their individual shut-off
valves must be disconnected from the gas
supply piping system during any pressure
testing of that system at pressures

greater

than 1/2 psig (3.5 kPa).

Orifice Sizes - Sea Level To High Altitude
(All Models)

These appliances are tested and approved for
installation at elevations of 0-4500 feet (0-1372
meters) above sea level, using the standard
burner orifice (See

Table 5). For elevations
above 4500 feet, contact your gas supplier
or qualified service technician. Install the
appliance according to the regulations of the
local authorities having jurisdiction and, in the
USA, the National Fuel Gas Code NFPA 54 /
ANSI Z223.1 - latest edition or , in Canada, the
CAN1-B149.1 and .2 codes - latest edition.

Table 5 shows the gas orifice size required
for the elevations indicated.

Burner Orifice Sizes

Elevation 0-4500 feet ( 0-1372 meters)

Model

Series

ADAGIO-MN

ADAGIO-MP

ADAGIO-EN

ADAGIO-EP

if field converted

Nat.Gas

drill size (inches)

#51 -------------

------------- #58

#51 -------------

-------------

drill size (inches)

Propane

#58

Table 5

Ne pas se servir de cet appareil s'il a été plongé
dans l'eau, complètement ou en partie. Appeler
un technicien qualifié pour inspecter l'appareil et
remplacer toute partie du système de contrôle
et toute commande qui ont été plongés dans
l'eau.

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.

Cet appareil doit être utilisé uniquement
avec les types de gaz indiqués sur la plaque
signalétique. Ne pas l'utiliser avec d'autres
gaz sauf si un kit de conversion certifié est
installé.

These appliances must not be connected to a
chimney or flue serving a separate solid fuel
burning appliance.

Carbon Monoxide Poisoning: Early signs of
carbon monoxide poisoning are similar to the
flu with headaches, dizziness and/or nausea.
If you have these signs, obtain fresh air im­mediately. Have the appliance serviced by a
qualified technician as it may not be operating
correctly. 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.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

3

WARNING

Failure to comply with the instal­lation and operating instructions
provided in this document will
result in an improperly installed
and operating appliance, voiding
its warranty. Any change to this
appliance and/or its operating
controls is dangerous. Improper
installation or use of this appli­ance can cause serious injury or
death from fire, burns, explosion
or carbon monoxide poisoning.

WARNING

Children and adults should be
alerted to the hazards of high
surface temperatures and should
stay away to avoid burns or cloth­ing ignition. Use caution around
the appliance to avoid burns or
clothing ignition. Young children
should be carefully supervised
when they are in the same room
as the appliance.

Note: An Optional Screen Door
or Screen Panel for the glass is
available (see Care and Opera­tions Manual for ordering infor­mation).

WARNING

Do not place clothing or other
flammable materials on or near
this appliance.

AVERTISSEMENT

Surveiller les enfants. Garder les
vêtements, les meubles, l'essence
ou autres liquides à vapeur inflam­mables lin de l'appareil.

NEW YORK CITY, NEW YORK (MEA)

Installation of these fireplaces are approved
for installation in New York City in the US state
of New York.

4

REQUIREMENTS FOR THE COMMON­WEALTH OF MASSACHUSETTS

Note: The following requirements reference
various Massachusetts and national codes
not contained in this document.

For all side wall horizontally vented gas fueled
equipment installed in every dwelling, build
ing or structure used in whole or in part for
residential purposes, including those owned
or operated by the Commonwealth and where
the side wall exhaust vent termination is less
than seven (7) feet above finished grade in the
area of the venting, including but not limited to
decks and porches, the following requirements
shall be satisfied:

Installation Of Carbon Monoxide Detectors

At the time of installation of the side wall
horizontal vented gas fueled equipment, the
installing plumber or gasfitter shall observe
that a hard wired carbon monoxide detector
with an alarm and battery back-up is installed
on the floor level where the gas equipment is to
be installed. In addition, the installing plumber
or gasfitter shall observe that a battery operated
or hard wired carbon monoxide detector with
an alarm is installed on each additional level
of the dwelling, building or structure served
by the side wall horizontal vented gas fueled
equipment. It shall be the responsibility of the
property owner to secure the services of quali
fied licensed professionals for the installation of
hard wired carbon monoxide detectors.

In the event that the side wall horizontally
vented gas fueled equipment is installed in a
crawl space or an attic, the hard wired carbon
monoxide detector with alarm and battery
back-up may be installed on the next adjacent
floor level.

In the event that the requirements of this subdi
vision can not be met at the time of completion
of installation, the owner shall have a period
of thirty (30) days to comply with the above
requirements; provided, however, that during
said thirty (30) day period, a battery operated
carbon monoxide detector with an alarm shall
be installed.

Approved Carbon Monoxide Detectors

Each carbon monoxide detector as required
in accordance with the above provisions shall
comply with NFPA 720 and be ANSI/UL 2034
listed and IAS certified.

Signage

A metal or plastic identification plate shall be
permanently mounted to the exterior of the
building at a minimum height of eight (8) feet
above grade directly in line with the exhaust vent
terminal for the horizontally vented gas fueled
heating appliance or equipment. The sign shall
read, in print size no less than one-half (1/2)
inch in size,

KEEP CLEAR OF ALL OBSTRUCTIONS.”

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

“GAS VENT DIRECTLY BELOW.

Inspection

The state or local gas inspector of the side
wall horizontally vented gas fueled equipment
shall not approve the installation unless, upon
inspection, the inspector observes carbon
monoxide detectors and signage installed in
accordance with the provisions of 248 CMR

5.08(2)(a)1 through 4.

-

Exemptions

The following equipment is exempt from 248
CMR 5.08(2)(a)1 through 4:

• The equipment listed in Chapter 10 entitled
“Equipment Not Required To Be Vented”
in the most current edition of NFPA 54 as
adopted by the Board; and

• Product Approved side wall horizontally
vented gas fueled equipment installed in a
room or structure separate from the dwell
ing, building or structure used in whole or
in part for residential purposes.

MANUFACTURER REQUIREMENTS
Gas Equipment Venting System Provided

When the manufacturer of Product Approved
side wall horizontally vented gas equipment
provides a venting system design or venting
system components with the equipment, the
instructions provided by the manufacturer for
installation of the equipment and the venting
system shall include:

• Detailed instructions for the installation of

-

-

the venting system design or the venting
system components; and

• A complete parts list for the venting system
design or venting system.

Gas Equipment Venting System NOT Pro­vided

When the manufacturer of a Product Approved
side wall horizontally vented gas fueled equip
ment does not provide the parts for venting
the flue gases, but identifies “special venting
systems”, the following requirements shall be
satisfied by the manufacturer:

• The referenced “special venting system”
instructions shall be included with the appli
ance or equipment installation instructions;
and

• The “special venting systems” shall be
Product Approved by the Board, and the
instructions for that system shall include a
parts list and detailed installation instruc
tions.

A copy of all installation instructions for all
Product Approved side wall horizontally vented
gas fueled equipment, all venting instructions,
all parts lists for venting instructions, and/or all
venting design instructions shall remain with
the appliance or equipment at the completion
of the installation.

• Installation and repair must be done by a
plumber or gas fitter licensed in the Com
monwealth of Massachusetts.

• The flexible gas line connector used shall
not exceed 36 inches (92 centimeters) in
length.

• The individual manual shut-off must be a
T-handle type valve.

-

-

-

-

-

LOCATION

HORIZONTAL VENT
(Top Vent
Application)

VERTICAL VENT
(Top Vent
Application)

RECESSED

INSTALLATION

TOP VENT INSTALLATIONS

HORIZONTAL VENT
(Top Vent
Application)

VERTICAL VENT
(Top Vent
Application)

In selecting the location, the aesthetic and functional use of the appliance are primary concerns.
However, vent system routing to the exterior and access to the fuel supply are also important.

Due to high temperatures, the appliance should be located out of traffic and away from furniture
and draperies, etc. (Figure 1). The location should also be free of electrical, plumbing or other

heating/air conditioning ducting.

MANUFACTURED HOME
REQUIREMENTS

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

The appliance should be mounted on a fully supported base extending the full width and depth of
the unit. The appliance may be located on or near conventional construction materials. However,
if installed on combustible materials, such as carpeting, vinyl tile, etc., a metal or wood barrier
covering the entire bottom surface must be used.

Top View

When the unit is installed with one
side flush with a wall, the wall on the
other side of the unit must not extend
beyond the front edge of the unit.

Figure 1 - Typical Locations

COLD CLIMATE INSULATION

Cet appareil peut être installé dans un maison
préfabriquée (É.-U. seulement) ou mobile déjà
installée à demeure si les réglements locaux
le permettent.

Manufactured Home installations must be
installed in accordance with these instructions
and the following standards / codes:

• Manufactured Home Construction and
Safety Standard Title 24 CFR, Part 3280, or
the current Standard for Fire Safety Criteria
for Manufactured Home Installations, Sites
and Communities ANSI / NFPA 501A in the
USA, and CAN / CSA Z240 MH Mobile Home
Standard in Canada

• (when applicable) The American National
Standard for Manufactured Homes (NCSBCS
/ ANSI A225.1 - latest edition).

CAUTIONS

Ensure that the cross members
are not cut or weakened during
installation. The structural integ­rity of the manufactured home
floor, wall, and ceiling / roof must
be maintained. This appliance
must be grounded to the chas­sis of the manufactured home
in accordance with local codes
or in the absence of local codes,
with the National Electrical Code
ANSI / NFPA 70 - latest edition
or the Canadian Electrical Code
CSA C22.1 - latest edition.

For cold climate installations, seal all cracks around your appliance with noncombustible material
and wherever cold air could enter the room. It is especially important to insulate outside chase
cavity between studs and under floor on which appliance rests, if floor is above ground level. Gas
line holes and other openings should be caulked or stuffed with unfaced fiberglass insulation. In
cold climates, if the fireplace is being installed on a cement slab, a sheet of plywood or other raised
platform can be placed underneath to prevent conducting cold up into the room. It also helps to
sheetrock inside surfaces and tape for maximum air tightness and caulk firestops.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

5

APPLIANCE AND VENT CLEARANCES

12 (305) Mantel

10 (254) Mantel

8 (203) Mantel

6 (152) Mantel

4 (102) Mantel

16

(406)

12

(305)

10

(254)

2 (51) Mantel

Top Of

Appliance

6

(152)

8

(203)

Mantel Clearances

Inches (mm)

14

(356)

17"

(432)

14" (356)

Min. Distance to
Unprotected Side Wall

45

°

Combustible Materials Allowed
In Shaded Area “Safe Zone”

2” (51) Minimum
Clearance to Combustibles

12" (305)

5"

(127)

Min. Distance
8-1/4” (210) to
Protected Side Wall

Top View Of

Fireplace

Side
Wall

Side
Wall

inches (millimeters)

Do not insulate the
space between the
appliance and the
area above it.

*Shelf Height

(see table)

Drywall

Header

Top Spacers

4” �

(102mm)

The appliance is approved with zero clearance to
combustible materials on all sides (as detailed
in

Table 6), with the following exception: When
the unit is installed with one side flush with a
wall, the wall on the other side of the unit must
not extend beyond the front edge of the unit. In
addition, when the unit is recessed, the side walls
surrounding the unit must not extend beyond
the front edge of the unit. See

Figure 1.

MINIMUM CLEARANCES Inches (millimeters)

Back 1/2 in. (13 mm)

Sides 1/2 in. (13 mm)**

Top Spacers 0 in. (0 mm)

Floor 0 in. (0 mm)***

From Bottom of Unit

64 in. (1626 mm)

To Ceiling

Vent 3 (76) Top *

1 (25.4) Sides & Bottom

SERVICE CLEARANCES Feet (meters)

Front 3 feet (0.9 meters)

Table 6

MODELS
Adagio-MN
Adagio-MP

Adagio-EN

Combustible Shelf Height

Inches (millimeters)

Top Vent - with One 90 Degree Elbow

Secure Vent Secure Flex (flex elbow)

*52 (1321) *53-3/4 (1365)

* Includes 4” clearance to combustibles
(required above vent components)

u

4" clearance is required above the elbow
for installations that require an elbow at the
top of the unit and that ends in a horizontal
termination.

Figure 2 - Minimum Shelf Height Above Fireplace

*Note: 3 in. (75 mm) above any horizontal vent
component. See Note u in Figure 2.

**Note: See Page 9, Step 1 for clearance

requirements to the nailing flange located at
each side of the unit and any screw heads
adjacent to it.

***Note: To ensure proper fit of the facade
(required - sold separately). The appliance
base will need to be elevated 3/4" minimum
above the floor to allow for the proper fit of the
facade (i.e. use 3/4" board as platform).

SHELF HEIGHT

To provide for the lowest possible shelf sur­face, the venting attached to the top vent
should be routed in a way to minimize ob-

6

structions to the space above the appliance.
Do not insulate the space between the appli­ance and the area above it (see Figure 2).
The minimum height from the base of the ap­pliance to the underside of combustible ma­terials used to construct a utility shelf in this
fashion is shown in the table in Figure 2.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Figure 3 - Mantel Clearances - Inches (millimeters)

Combustible materials
may project beyond the
sides of the fireplace
opening as long as
they are kept within
the shaded areas il­lustrated here.

At 14" minimum side
wall clearance, a
combustible wall may
project to any length

Side Wall Clearances

Figure 4

V

V

V

V

V

F

C

B

B

A

B

H

M

I

X

V

D

V

A

A

A

V

L

B

J

X

E

V

A

G

*18”

18”

B

C

C

C

VENT TERMINATION CLEARANCES

* See Item D in the Text Below.

Exterior Wall

Horizontal

Termination

Inside Corner

= Air Supply Inlet

Center Line

of Termination

DETAIL D

Ventilated Soffit

Fixed

Closed

Window

= Vent Terminal

Inside

Corner Detail

Operable

Window

= Area where Terminal is NOT permitted

EXTERIOR HORIZONTAL VENT TERMINATION

CLEARANCE REQUIREMENTS

= 9" in U.S.
= 12" in Canada

3 ft.

3 ft.

Minimum Clearances Canadian Installation * US Installation **

A = Clearance above grade, veranda, porch, deck
or balcony.

B = Clearance to window or door that may be
opened.

C = Clearance to permanently closed window 12 inches (305 mm) recommended to prevent window

12 inches (30 cm) * 12 inches (30 cm) **

6 in. (15.2 cm) for appliances < 10,000 BTU/hr (3kW),
12 in. (30 cm) for appliances > 10,000 BTU/hr (3kW) and <
100,000 BTU/hr (30kW), 36 inches (91 cm) for appliances
> 100,000 BTU/hr (30kW)*

condensation

6 in. (15.2 cm) for appliances < 10,000 BTU/hr (3kW),
9 in. (23 cm) for appliances > 10,000 BTU/hr (3kW) and <
50,000 BTU/hr (15kW), 12 inches (30 cm) for appliances
> 50,000 BTU/hr (15kW)*

9 inches (229 mm) to prevent window condensation

D = Vertical clearance to ventilated soffit located

18 inches (458 mm) 18 inches (458 mm)
above the terminal within a horizontal distance of 18
in. (458 mm) from the center line of the terminal

E = Clearance to unventilated soffit 12 inches (30 cm) 12 inches (30 cm)
F = Clearance to outside corner 5 inches (12.7 cm) 5 inches (12.7 cm)
G = Clearance to inside corner 2" (5.08cm) Min. to Non-Combustible - SV4.5HT-2 •

6" (15.24cm) Min. to Combustible - SV4.5HT-2
H = Clearance to each inside of center line extended

above meter / regulator assembly

3 feet (91 cm) within a height of 15 feet above the meter /

regulator assembly *

2" (5.08cm) Min. to Non-Combustible - SV4.5HT-2 •
6" (15.24cm) Min. to Combustible - SV4.5HT-2

3 feet (91 cm) within a height of 15 feet above the meter
/ regulator assembly **

I = Clearance to service regulator vent outlet 3 feet (91 cm) * 3 feet (91 cm) **

J = Clearance to non-mechanical air supply inlet
to building or the combustion air inlet to any other
appliance

K = Clearance to mechanical air supply inlet 6 feet (1.8 meters) * 3 feet (91 cm) above, if within 10 feet (3 m) horizon

L = Clearance above paved sidewalk or paved
driveway located on public property

M = Clearance under veranda, porch, deck or
balcony

6 in. (15.2 cm) for appliances < 10,000 BTU/hr (3kW), 12

in. (30 cm) for appliances > 10,000 BTU/hr (3kW) and <

100,000 BTU/hr (30kW), 36 inches (91 cm) for appliances

> 100,000 BTU/hr (30kW)*

7 feet (2.13 m) ‡ 7 feet (2.13 m) ‡

12 in. (30 cm) * ‡ 12 in. (30 cm) ** ‡

6 in. (15.2 cm) for appliances < 10,000 BTU/hr (3kW), 9
in. (23 cm) for appliances > 10,000 BTU/hr (3kW) and <
50,000 BTU/hr (15kW), 12 inches (30 cm) for appliances
> 50,000 BTU/hr (15kW)*

tally**

* In accordance with the current CSA-B149.1 National Gas and B149.2 Propane Installation Code - Latest Editions.

** In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Codes - Latest Edition.
‡ A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves both dwellings.
*‡ Only permitted if veranda, porch, deck or balcony is fully open on a minimum 2 sides beneath the floor.

• 2" clearance to Non-combustibles for SV4.5HT-2

Figure 5

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

-

7

These instructions should be used as a guide-

12

X

Roof Pitch is X/12

2 FT
MIN.

2 FT MIN.

Lowest

Discharge

Opening

H*

*H = MINIMUM HEIGHT FROM ROOF TO

LOWEST DISCHARGE OPENING OF VENT

TERMINATION HEIGHTS FOR VENTS ABOVE

FLAT OR SLOPED ROOFS

Horizontal Overhang

Vertical
Wall

Vent

Termination

Storm Collar

Concentric

Vent Pipe

Flashing

1 inch (25.4 mm) Minimum
Clearance to Combustibles

3"

(76 mm)

12"

(305 mm)

Combustible Projection greater

Horizontal Vent Termination Clearances

Combustible Projection
2-1/2”(64mm) or less in length

18"

(457 mm)

Ventilated

Soffit

Unventilated

Soffit

than 2-1/2”(64mm) in length

Side Elevation View

SV4.5HT-2

Termination Kit

SV4.5HT-2

Termination Kit

Side Exterior
Wall

MINIMUM ALLOWABLE

SIDE WALL CLEARANCE

All horizontal terminations may be
located as close as 6” (152mm) to any
(non-combustible and combustible)
exterior sidewall. This distance may be
decreased to 2” (51mm) for non­combustible exterior sidewalls only, if
the SV4.5HT-2 termination is used.

line and do not supersede local codes in any
way. Install vent according to local codes,
these instructions, the current National Fuel
Gas Code (ANSI-Z223.1) in the USA or the
current standards of CAN/CGA-B149.1 and

-B149.2 in Canada.

Horizontal Vent Termination Clearances

The horizontal vent termination must have
a minimum of 3" (76 mm) clearance to any
overhead combustible projection of 2-1/2" (64
mm) or less. See
exceeding 2-1/2" (64 mm), see
additional vent location restrictions refer to

Figure 5 on Page 7.

Figure 7. For projections

Figure 5. For

Vertical Vent Termination Clearances

Terminate single vent caps relative to building
components according to

The vent / air intake termination clearances
above the high side of an angled roof is as
shown in the following chart:

Termination Heights For Vents

Above Flat Or Sloped Roofs

Ref. NFPA 54 / ANSI Z223.1, 7.6

Roof Pitch * Feet * Meters

8

Flat to 6/12
6/12 to 7/12
7/12 to 8/12
8/12 to 9/12

9/12 to 10/12
10/12 to 11/12
11/12 to 12/12

Figure 6

Terminate multiple vent terminations accord­ing to the installation codes listed at the top

this Page.

of

Figure 6.

1.0 0.3

1.25 0.38

1.5 0.46

2.0 0.61

2.5 0.76

3.25 0.99

4.0 1.22

See Figure 28 on Page 18 for the recess allowances, into
exterior walls, of the square horizontal terminations.

Figure 7

TYPICAL INSTALLATION SEQUENCE

The typical sequence of installation follows,
however, each installation is unique resulting
in variations to those described. See the page
numbers references in the following steps for
detailed procedures.

Step 1. (Page 9) Construct the appliance fram-
ing. Position the appliance within the framing
and secure with nailing brackets.

Step 2. (Page 12) Route gas supply line to
appliance location.

(Page 12) Install the vent system and

Step 3.

exterior termination.

Step 4. (Page 22) Field Wiring

a. Millivolt Appliances –

switch is factory installed.

b. Electronic Appliances – Connect 120 Vac

electrical power to the appliance recep
tacle.

Step 5. (Page 23) Install blower kit (optional
equipment).

Step 6. (Page 23) Remove glass door frame
assembly.

Step 7. (Page 24) Make connection to gas
supply.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

The operating control

Step 8. BEFORE PROCEEDING TO STEP 9,
INSTALL A FIREBOX LINER KIT PER INSTRUC
TIONS PROVIDED IN THE KIT (REQUIRED

- SOLD SEPARATELY).

Step 9. (Page 25) Install the logs and glowing

embers.

Step 10. (Page 27) Checkout appliance op-
eration.

Step 11. (Page 27) Adjust burner to ensure
proper flame appearance.

DETAILED INSTALLATION STEPS

The appliance is shipped with all gas controls
and components installed and pre-wired. Re
move the shipping carton, exposing the front
glass door. Pull out the two spring loaded
latches securing the glass door (located under

-

the firebox floor). Remove the door by tilt
ing it outward at the bottom and lifting it up
and off. Set the door aside protecting it from
inadvertent damage.

on Page 23.

See Figure 38a and 38b

-

-

-

C

E

D

A

B

7 (178)

�

Step 1. FRAMING

D*

B

VENT FRAMING ­TOP VENT WITH ONE

90° ELBOW

Framing should be
constructed of 2x4
or larger lumber

2 x 4 Header must be
installed, vertical as shown
to allow proper clearance
from venting components to
combustible header. See
Figure 50 for more
details.

A

C

Platform
**

Inches (mm)

8

(203)

5-1/8

13-1/8

(333)

10-1/2

(267)

(130)

3/4” Minimum from
Finished Floor

Frame these appliances as illustrated in Figure
9, unless the appliance is to be installed in a

corner.

FIREPLACE FRAMING SPECIFICATIONS

Framing With Platform

See

Figure 10 for corner framing installations.
All framing details must allow for a minimum
clearance to combustible framing members as
shown in

Table 6 on Page 6.

If the appliance is to be elevated above floor
level, a solid continuous platform must be
constructed. Headers may be in direct contact
with the appliance top spacers but must not
be supported by them or notched to fit around
them. All construction above the appliance must
be self supporting,

DO NOT use the appliance

for structural support.

The fireplace should be secured to the side fram
ing members using the unit's nailing flanges
each side of the fireplace front. See

on

Figure 8.

Use 8d nails or their equivalent.

* D shown here is not
dimensioned to the vertical
center of the horizontal
framing. This is to allow for
the required 4" clearance
above the vent and the 1"
required clearance below
the vent. This does not
include the suggested 1/4"
rise per foot for horizontal
runs.

** With the facade installed
(required - sold sepa­rately), the appliance base
will need to be elevated a
minimum of 3/4" above the

-

The platform should extend the full width
and depth of the fireplace base.

Figure 9 - Framing

in. 22-1/8 40-1/4 15-3/4 44-1/8

mm 562 1022 400 1121

floor to allow for the proper
fit of the facade (i.e. use
3/4" board minimum as
platform).

Framing Dimensions - All Models

A B C D

Left Side Front Corner of Fireplace Shown

(Right Side Requirements the Same)

Unit Being Secured By Its Nailing

Flanges To The Framing

Frame the opening to the exact dimensions
specified in the framing details in this manual.

Figure 8

Use Top Flange For
5/8” Thick Drywall

Use Center Flange For
1/2” Thick Drywall

Use Bottom Flange
For Flush Mount

Inches (mm)

Top Vent With Horizontal
Termination In A Corner

uWhen installing in a corner configuration, one of

the rear stand-offs will need to be removed.

Corner Framing Dimensions - All Models

in. 22-1/8 41-5/8 29-1/2 10 20-7/8

mm 562 1057 749 254 530

Figure 10 - Corner Framing with Square Termination (SV4.5HT-2)

A B C D E

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

9

Co-axial DV Vent

4-1/2" (114) Inner
7-1/2" (191) Outer

36-23/32

(933)

21-1/16 (535)

1-7/8

(48)

6-1/16

(154)

8-7/32

(209)

1-1/2

(38)

15-1/32

(382)

15-15/32

(393)

7-11/16

(195)

34

(864)

40-1/32

(1017)

20-3/4

(527)

14-3/4 (375)

5-13/32

(137)

FIREPLACE SPECIFICATIONS

Fireplace Dimensions - Inches (millimeters)

Due to Lennox' ongoing commitment to quality, all specifications, ratings and dimensions are subject to change without notice.

Figure 11A

10

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

23-1/2” (597)

14-3/4”

(375)

20-3/4”

(527)

Facade (Required) *

(gated style shown)

1/2”
(13)

37-7/8”

(962)

18-3/4

(476)

1/2” (13mm) ­1-1/2” (38mm)

FACADE SPECIFICATIONS

F

a

c

ade

(R

e

q

u

ir

e

d)

*

(a

rc

h

e

d

style sho

w

n

)

26-3/4” (680)

38-1/2”

(978)

20-1/4”

(514)

14-13/16” (376)

1/2”
(13)

1/2” (13mm) ­1-1/2” (38mm)

Arch Facades**

Black and Brushed Nickel Finishes

Cat.

No.

H5773 ADAGIO-AG Arch Black

H5774 ADAGIO-PF Arch Br. Nickel

Model Description

** A filigree inset kit is also required

(sold separately). See Care and
Operation Manual for ordering
information.

Gated Facades

Copper and Iron Gates

Cat. No. Model Description

H5775 ADAGIO-IG Iron Gates

H5776 ADAGIO-CPD Copper Gates

Due to Lennox' ongoing commitment to quality, all specifications, ratings and dimensions are subject to change without notice.
* With the facade installed (required - sold separately), the appliance base will need to be elevated a minimum of 3/4" above the floor to allow

Notes

for the proper fit of the facade (i.e. use 3/4" board minimum as platform).

Figure 11B

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

11

SV4.5H

T -2

T ermination

SV4.5F A OR
SV4.5FB Flashing
AND SV4.5SC
STORM COLLAR



SV4.5VF

Firestop/Spacer

SV4.5L6/12/24/36/48
V ent Sections

40' Max.
(12.2 M)

6' Min.

(1.8 M)

1" (25.4 mm)
Minimum
Clearance to
Combustibles



When using Secure

Flex,

use Firestop/Spacer

SF4.5VF

Step 2. ROUTING GAS LINE

Route a 1/2" (13 mm) gas line along the inside
of the left side framing as shown in
Gas lines must be routed, constructed and made
of materials that are in strict accordance with
local codes and regulations.
All appliances are factory-equipped with a
flexible gas line connector and 1/2 inch shutoff

(See Step 7 on Page 24).

valve.

Right Side Front
Corner of Fire­place Framing

6-1/8"

(156 mm)

* Measured from the top of

Figure 12

platform that unit is installed on
to pipe center (see Figure 9)

Step 3. INSTALL THE VENT SYSTEM

General Information

These instructions should be used as a guide­line and do not supersede local codes in any
way. Install vent according to local codes,
these instructions, the current National Fuel
Gas Code (ANSI-Z223.1) in the USA or the cur
rent standards of CAN/CSA-B149 in Canada.

Figure 12.

*1-7/8"

(65 mm)

These fireplaces must be vented directly
to the outside.

The vent system may not service multiple
appliances, and must never be connected to a
flue serving a solid fuel burning appliance. The
vent pipe is tested to be run inside an enclosing
wall (such as a chase). There is no requirement
for inspection openings in the enclosing wall at
any of the joints in the vent pipe.

Select Venting System - Horizontal or Verti­cal

With the appliance secured in framing, de­termine vent routing and identify the exterior
termination location. The following sections
describe vertical (roof) and horizontal (exterior
wall) vent applications. Refer to the section
relating to your installation. A list of approved

venting components are shown in the tables
on Page 30.

VERTICAL TERMINATION SYSTEMS (ROOF)

Figures 17, and 23 through 25 on Pages
14 and 16 and their associated Vertical

Vent Tables illustrate the various vertical venting
configurations that are possible for use with
these appliances. Secure Vent pipe applications
are shown in these figures; Secure Flex pipe
may also be used.

A Vertical Vent Table summarizes each system’s

minimum and maximum vertical and horizontal
length values that can be used to design and
install the vent components in a variety of

-

applications.

Vertical (Straight) Installation

Determine the number of straight vent sections
required. 4-1/2" (114 mm), 10-1/2" (267 mm),
22-1/2" (572 mm), 34-1/2" (876 mm) and 46­1/2" (1181 mm) net section lengths are available.
Plan the vent lengths so that a joint does not
occur at the intersection of ceiling or roof joists.
Refer to the Vent Section Length Chart.

These fireplaces are designed, tested and
listed for operation and installation with,
and only with, Secure Vent™ Direct Vent
System Components, Secure Flex™ Flexible
Vent Components manufactured by Security
Chimneys International and Z-FLEX™
GA Venting Systems listed to UL1777 and
ULCS635 manufactured by Flexmaster Canada
Limited. These approved vent system compo­nents are labeled for identification. DO NOT
use any other manufacturer's vent components
with these appliances.

12

Model

Both these vertical vent systems terminate

through the roof. The minimum vent height

above the roof and/or adjacent walls is speci­fied in ANSI Z223.1-(latest edition) (In Canada,
the current CAN/CSA-B149 installation code)
by major building codes. Always consult your
local codes for specific requirements. A general
guide to follow is the Gas Vent Rule (refer to

Figure 6 on Page 8).

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Figure 13

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051 5.21 0 1 0 0 3 4

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5.061 573.31 0 2 0 0 3 5

5.271 573.41 0 0 0 5 0 5
771 57.41 1 0 0 5 0 6
381 52.51 0 1 0 5 0 6
681 5.51 0 0 0 0 4 4

5.091 578.51 1 0 0 0 4 5

5.691 573.61 0 1 0 0 4 5

5.502 521.71 0 1 1 5 0 7
702 52.71 0 0 0 6 0 6

5.112 526.71 1 0 0 6 0 7

5.712 521.81 0 1 0 6 0 7

5.922 521.91 0 0 1 6 0 7

5.232 573.91 0 0 0 0 5 5
732 57.91 1 0 0 0 5 6

5.142 521.02 0 0 0 7 0 7
642 5.02 1 0 0 7 0 8
252 12 0 1 0 7 0 8
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VENT SECTION LENGTH CHART

Nominal

Section Length

(inches)

Net Section

Length (inches)

Height of Vent Number of Vent Sections

*inches feet

6 12 24 36 48

4 ½ 10 ½ 22 ½ 34 ½ 46 ½

VENT SECTION LENGTH CHART

Nominal Section

T

Length (inches)

O
T

Net Section

A

Length (inches)

L

Height of Vent Number of Vent Sections

Q
T

*inches feet

Y

6 12 24 36 48

4 ½ 10 ½ 22 ½ 34 ½ 46 ½

Vertical (Offset) Installation

T

Analyze the vent routing and determine the

O

quantities of vent sections and number of el

T
A

bows required. Refer to

L

and Tables on Page 16 to select the type of

vertical installation desired. Vent sections are

Q
T

available in net lengths of 4-1/2" (114 mm),

Y

10-1/2" (267 mm), 22-1/2" (572 mm), 34-1/2"

Vertical Vent Figures

(876 mm) and 46-1/2" (1181 mm). Refer to the
Vent Section Length Chart on this page for an
aid in selecting length combinations. Elbows are
available in 90° and 45° configurations. Refer

Figure 18 for the SV4.5E45 and SV4.5E90

to
elbow dimensional specifications.

-

Where required, a

telescopic vent section

(SV4.5LA) may be used to provide the installer

with an option in installing in tight and confined
spaces or where the vent run made up of fixed
length pieces develops a joint in a undesirable
location, or will not build up to the required
length. The SV4.5LA Telescopic Vent Section
has an effective length of from 1-1/2" (38 mm)
to 7-1/2 " (191 mm). The SV4.5LA is fitted with
a locking inclined channel end (identical to a
normal vent section component) and a plain end
with 3 pilot holes. Slip the plain end over the
locking channel end of a standard SV4.5 vent
component the required distance and secure
with three screws.

Maintain a minimum 1" (25 mm) clear­ance to combustible materials for all
vertical vent components. Clearances for
all horizontal vent components are 3"
(76 mm) on top, 1" (25 mm) on sides and 1"
(25 mm) on the bottom.

A. Frame ceiling opening - Use a plumb line

from the ceiling above the appliance to locate
center of the vertical run. Cut and/or frame an
opening, 10-1/2" x 10-1/2" (267 mm x 267
mm) inside dimensions, about this center mark
(Figure 14).

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Roof Framing

10-1/2" Min.

Plumb Bob

Figure 14

10-1/2" Min.

(267 mm)

(267 mm)

Ceiling Framing

13

First Vent
Component

Align the dimple (four places)
with the opening of the locking
incline channel on appliance
collar. Twist vent component
clockwise to engage and seal.

Locking
Incline Channel

Dimple

Appliance collar

Vent / Appliance Collar

Connection

Align the dimple (four places) of the
upper vent section with the opening of
the locking incline channel on the
lower vent section. Twist vent
component clockwise to engage and
seal until arrow and dimple align.

Locking
Incline Channel

Dimple

Arrow

Connected

Vent Sections

Vent / Vent Section

Connection

Arrow

Arrow

7-5/8”

(194 mm)

4-13/16

(122 mm)

B. Attach vent components to appliance

- Secure Vent SV4.5 direct vent system compo-

nents are unitized concentric pipe components
featuring positive twist lock connections (
Figure 15).

All of the appliances covered in this document
are fitted with collars having locking inclined
channels. The dimpled end of the vent compo
nents fit over the appliance collar to create the
positive twist lock connection.

Figure 15

Figure 16

To attach a vent component to the appliance
collar, align the dimpled end over the collar,
adjusting the radial alignment until the four
locking dimples are aligned with the inlet of
the four inclined channels on the collar (
to Figure 15).

Push the vent component against the collar
until it fully engages, then twist the component
clockwise, running the dimples down and along
the incline channels until they seat at the end
of the channels.

The unitized design of the
ponents will engage and seal both the inner
and outer pipe without the need for sealant or
screws. If desired a #6 x 1/2" screw may be
used at the joint, but it is not required as the
pipe will securely lock when twisted.

14

Secure Vent com-

see

refer

C. Attach vent components to each other

- Other vent sections may be added to the

previously installed section in accordance with
the requirements of the vertical vent figures
and tables. To add another vent component
to a length of vent run, align the dimpled end
over the inclined channel end of the previously
installed section, adjusting the radial alignment

­until the four locking dimples are aligned with

the inlets of the four incline channels of the
previous section.

Push the vent component against the previous
section until it fully engages, then twist the
component clockwise running the dimples down
and along the incline channels until they seat at
the end of the channels.

This seating position

is indicated by the alignment of the arrow and
dimple as shown in Figure 16.

D. Install firestop/spacer at ceiling - When

using Secure Vent, use SV4.5VF firestop/spacer
at ceiling joists; when using Secure Flex, use
SF4.5VF firestop/spacer. If there is living space
above the ceiling level, the firestop/spacer
must be installed on the bottom side of the
ceiling. If attic space is above the ceiling, the
firestop/spacer must be installed on the top

side of the joist.

Route the vent sections through the framed
opening and secure the firestop/spacer with
8d nails or other appropriate fasteners at each
corner.

Remember to maintain 1" (25 mm)
clearance to combustibles, framing members,
and attic or ceiling insulation when running
vertical chimney sections. Attic insulation
shield may be used to obtain the required
clearances indicated here (order H3907,
SV4.5ARSA, Attic insulation shield with ad­justable height from 12"-22"). See installation
accessories table on Page 30.

E. Support the vertical vent run sections -

Note - Proper venting support is very important.
The weight of the vent must not be supported
by the fireplace in any degree.

Support the vertical portion of the venting
system every 8 feet (2.4m) above the fireplace
vent outlet. One method of support is by utiliz
ing field provided support straps (conventional
plumber's tape). Secure the plumber's tape to

the framing members with nails or screws.

Loop the tape around the vent, securing the
ends of the tape to the framing. If desired,
sheet metal screws #6 x 1/2" length may be
used to secure the support straps to the vent
pipe. See

Figure 17.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Blocking

Support Straps
(Plumber's tape)

8 feet (2.4 m)

Maximum

1 inch (25.4
mm) minimum
clearance to
combustibles

Figure 17

F. Change vent direction to horizontal/inclined
run - At transition from or to a horizontal/in-

clined run, install the SV4.5E45 and SV4.5E90
elbows in the same manner as the straight vent
sections. The elbows feature a twist section to
allow them to be routed about the center axis
of their initial collar section to align with the
required direction of the next vent run element.

Twist elbow sections in a clockwise direction
only so as to avoid the possibility of unlocking
any of the previously connected vent sections.

See

Figure 18.

Swivel Joint

(360° swivel)

SV4.5E45

45° Elbow)

Swivel Joint

(360° swivel)

SV4.5E90

90° Elbow)

Figure 18

G. Continue installation of horizontal/inclined
sections - Continue with the installation of the

straight vent sections in horizontal/inclined run

-

as described in
every 5' (1.52 m) along horizontal/inclined vent
runs using conventional plumber’s tape.

very important that the horizontal/inclined
run be maintained in a straight (no dips) and
recommended to be in a slightly elevated
plane, in a direction away from the fireplace
of 1/4" rise per foot (20 mm per meter) which
is ideal, though rise per foot run ratios that are

smaller are acceptable all the way down to at or
near level. Use a carpenter’s level to measure
from a constant surface and adjust the support
straps as necessary.

Step C. Install support straps

8-1/8"

(206 mm)

It is

It is important to maintain the required clear-

C

D

ances to combustibles: 1" (25 mm) at all sides
for all vertical runs; and 3" (76 mm) at the top,
1" (25 mm) at sides, and 1" (25 mm) at the
bottom for all horizontal/inclined runs.

H. Frame roof opening - Identify location for

vent at the roof. Cut and/or frame opening per
Roof Framing Chart and

Figure 19.

Framing Dimensions for Roof

Inches (millimeters)

Pitch C D

0/12 10-1/2 in.

(267 mm)

6/12 10-1/2 in.

(267 mm)

12/12 10-1/2 in.

(267 mm)

10-1/2 in.

(267 mm)

12 in.

(305 mm)

17 3/4 in.
(451 mm)

Flashing

Figure 20

J. Install the storm collar - Install the storm
collar, supplied with the flashing, over the
vent/flashing joint. See Figure 21. Loosen
the storm collar screw. Slide collar down until
it meets the top of the flashing. Tighten the ad­justing screw. Apply non-combustible caulking
or mastic around the circumference of the joint
to provide a water tight seal.

Storm
Collar

K. Install the vertical termination - The final

step involves installation of the SV4.5CGV-1
Vertical Termination. Extend the vent sections
to the height as shown in the "Vertical vent ter
mination section" on Page 7. The SV4.5CGV-1
Vertical Termination (Figure 22) installs in the
exact same fashion as any other Secure Vent
section. Align the termination over the end of
the previously installed section, adjusting the
radial alignment until the four locking dimples
of the termination are aligned with the inlets of
the four incline channels of the last vent section.
Push the termination down until it fully engages,
then twist the termination clockwise running the
dimples down and along the incline channels
until they seat at the end of the channels.

-

Figure 19

I. Install the roof flashing - Extend the vent
sections through the roof structure. Install the
roof flashing over the vent section and posi­tion such that the vent column rises vertically
(use carpenters level) (Figure 20). Nail along
perimeter to secure flashing or adjust roofing
to overlap the flashing edges at top and sides
only and trim where necessary. Seal the top
and both sides of the flashing with waterproof
caulking.

Figure 21

Figure 22

If the vent system extends more than 5' (1.5
m) above the roof flashing, stabilizers may be
necessary. Additional screws may be used at
section joints for added stability. Guide wires
may be attached to the joint for additional sup­port on multiple joint configurations.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

15

H

V

V1

VERTICAL VENT FIGURES/TABLES

V

H

1

H

V

1

Notes:

• Secure Vent™ (rigid vent pipe) is shown
in the Figures; Secure Flex™ (flexible vent
pipe) may also be used.

• It is very important that the horizontal/in
clined run be maintained in a straight (no
dips) and recommended to be in a slightly

elevated plane, in a direction away from the
fireplace of 1/4" rise per foot (20 mm per
meter) which is ideal, though rise per foot
run ratios that are smaller are acceptable all
the way down to at or near level.
SV4.5VF (Secure Vent), SF4.5VF (Secure

•

Flex) firestop/spacer must be used anytime
vent pipe passes through a combustible
floor or ceiling. SV4.5HF (Secure Vent),
SF4.5HF (Secure Flex) firestop/spacer must
be used anytime vent pipe passes through
a combustible wall.
Two 45 degree elbows may be used in place

•

of one 90 degree elbow. The same rise to
run ratios, as shown in the venting Figures
for 90 elbows, must be followed if 45 degree
elbows are used.

• AN ELBOW IS ACCEPTABLE AS 1 FOOT OF
VERTICAL RISE EXCEPT WHERE AN ELBOW
IS THE ONLY VERTICAL COMPONENT IN
THE SYSTEM (See Figure 29).

-

u Ceiling Firestop /

Spacer (SV4.5VF)

vWall Firestop/

Spacer (SV4.5HF)

u When using Secure Flex, use Firestop /

Spacer SF4.5VF.

v When using Secure Flex, use Firestop /

Spacer SF4.5HF.

Figure 24 - Top Vent - TWO 90 DEGREE ELBOWS

Table A

H Maximum V Minimum

feet (meter) feet (meter)

5 (1.524) Elbow Only

5 (1.524) 1 (0.305)

10 (3.048) 2 (0.610)

15 (4.572) 3 (0.914)

20 (6.096) 4 (1.219)

V + V

+ H = 40 feet (12.2 m) Max.

1

H = 20 feet (6.096 meters) Max.

Example: If 20 feet of (H) horizontal vent run
is needed, then 4 feet minimum of (V) vertical
vent will be required.

This table shows a 1(V) to 5(H) ratio. For
every 1 foot of (V) vertical, you are allowed 5
feet of (H) horizontal run, up to a maximum
horizontal run of 20 feet.

An elbow is acceptable as 1 foot of vertical
rise except where an elbow is the only vertical
component in the system. See Figure 29.

Example: If 20 feet total (H+H1) horizontal
vent run is needed, then 4 feet minimum of
(V) vertical vent will be required.

This table shows a 1(V) to 5(H) ratio. For
every 1 foot of (V) vertical, you are allowed

u Ceiling Firestop /

Spacer (SV4.5VF)

When using Secure Flex, use Firestop / Spacer

u

SF4.5VF

Figure 23 - Top Vent - STRAIGHT

WARNING

Under No Circumstances, May Sepa-

40 feet

(12.2 meters)

Maximum

rate Sections of Concentric Flexible

5 feet of (H+H1) horizontal run up to a maxi­mum total horizontal run of 20 feet.

An elbow is acceptable as 1 foot of verti­cal rise except where an elbow is the only
vertical component in the system. See
Figure 29.

Ceiling

u

Firestop / Spacer
(SV4.5VF)

Figure 25- Top Vent - THREE ELBOWS

H + H

Maximum

1

feet (meter) feet (meter)

5 (1.524) Elbow Only

5 (1.524) 1 (0.305)

10 (3.048) 2 (0.610)

15 (4.572) 3 (0.914)

20 (6.096) 4 (1.219)

H + H1 = 20 feet (6.096 m) Max.

V + V1 + H + H1 = 40 feet (12.192 m) Max.

Wall Firestop/

v

Spacer (SV4.5HF)

Table B

V Minimum

u When using Secure Flex, use

Firestop / Spacer SF4.5VF

v When using Secure Flex, use

Firestop / Spacer SF4.5HF

Vent Pipe Be Joined Together.

16

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

HORIZONTAL (OUTSIDE WALL) TERMINATION
SYSTEM

Figures 26, and Figures 29 to 32 on Pages
17, 19 and 20 and their associated Horizontal

Vent Table illustrate the various horizontal
venting configurations that are possible for
use with these appliances.
applications are shown in these figures;

Secure Vent™ pipe

Secure

Flex™ pipe may also be used. A Horizontal Vent

Table summarizes each system’s minimum and
maximum vertical and horizontal length values
that can be used to design and install the vent
components in a variety of applications.

Both of these horizontal vent systems terminate
through an outside wall. Building Codes limit or
prohibit terminating in specific areas. Refer to

Figure 5 on Page 7 for location guidelines.

Secure Vent SV4.5 direct vent system compo-

nents are unitized concentric pipe components
featuring positive twist lock connection, (

refer

to Figures 15 and 16 on Page 14). All of the

appliances covered in this document are fitted
with collars having locking inclined channels.
The dimpled end of the vent components fit
over the appliance collar to create the positive
twist lock connection.

A. Plan the vent run -
Analyze the vent routing and determine the
types and quantities of sections required
4-1/2" (114 mm), 10-1/2" (267 mm), 22-1/2"
(572 mm), 34-1/2" (876 mm) and 46-1/2" (1181
mm) net section lengths are available. Plan the
vent lengths so that a joint does not occur at
the intersection of ceiling or roof joists. Make
allowances for elbows as indicated in

Figure

18 on Page 14.

Maintain a minimum 1" (25 mm) clearance to
combustibles on the vertical sections. Clear­ances for the horizontal runs are; 3" (76 mm)
on top, 1" (25 mm) on sides, and 1" (25 mm)
at the bottom.

B. Frame exterior wall opening -

Locate the center of the vent outlet on
the exterior wall according to the dimen
sions shown in

Figure 9 on Page 9. Cut
and/or frame an opening, 10-1/2" x 12-1/8"
(267 mm x 308 mm) inside dimensions, about
this center.

C. Frame ceiling opening - If the vertical route
is to penetrate a ceiling, use plumb line to locate
the center above the appliance. Cut and/or frame
an opening, 10-1/2" x 10-1/2" (267 mm x 267
mm) inside dimensions, about this center (refer
to

Figure 14 on Page 13).

D. Attach vent components to appliance - To

attach a vent component to the appliance collar,
align the dimpled end over the collar, adjust
ing the radial alignment until the four locking
dimples are aligned with the inlets of the four
incline channels on the collar (

refer to Figure

15 on Page 14).

Ceiling

Support Brackets

u Firestop / Spacer

SV4.5VF

See Figure 17 on Page 14 for vertical
vent section support.

Building

Support

Framing

SV4.5E90

Elbow

Vertical

Rise

Figure 26

Push the vent component against the collar
until it fully engages, then twist the component
clockwise, running the dimples down and along
the incline channels until they seat at the end
of the channels. The unitized design of the
Secure Vent components will engage and seal
both the inner and outer pipe elements with the
same procedure. Sealant and securing screws
are not required.

E. Attach vent components to each other - Other
vent sections may be added to the previously
installed section in accordance with the require
ments of the vent tables. To add another vent
component to a length of vent run, align the
dimpled end of the component over the inclined
channel end of the previously installed section,
adjusting the radial alignment until the four lock
ing dimples are aligned with the inlets of the four
incline channels of the previous section. Push
the vent component against the previous section
until it fully engages, then twist the component
clockwise running the dimples down and along
the incline channels until they seat at the end of
the channels.

by the alignment of the arrow and dimple as
shown in Figure 16 on Page 14.

­F. Install firestop/spacer at ceiling -

When using Secure Vent, use SV4.5VF firestop/
spacer at ceiling joists; when using Secure Flex,
use SF4.5VF firestop/spacer. If there is living
space above the ceiling level, the firestop/
spacer must be installed on the bottom side of
the ceiling. If attic space is above the ceiling, the
firestop/ spacer must be installed on the top side
of the joist. Route the vent sections through the
framed opening and secure the firestop/spacer
with 8d nails or other appropriate fasteners at
each corner.

-

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

This seating position is indicated

Horizontal / Inclined Run

SV4.5L6/12/24/36/48

Vent Sections

Support Bracket Spacing

Every 5 ft (1.52 m)

u When Using Secure Flex,

Use Firestop / Spacer SF4.5VF

Fireplace

Remember to maintain 1" (25 mm) clearance
to combustibles, framing members, and attic
or ceiling insulation when running vertical
chimney sections.

G. Support the vertical run sections -

On the vertical run, support the venting sys
tem every 8 feet (2.4m) above the fireplace
vent outlet with field provided support straps
(Plumber's tape). Attach the straps to the vent
pipe and secure to the framing members with
nails or screws.

-

H. Change vent direction - At transition from or
to a horizontal/inclined run, install the SV4.5E45
and SV4.5E90 elbows in the same manner as

-

the straight vent sections. The elbows feature a
twist section to allow them to be routed about the
center axis of their initial collar section to align
with the required direction of the next vent run
element.

direction only so as to avoid the possibility of
unlocking any of the previously connected vent
sections. See Figure 16 on Page 14.

I. Continue installation of horizontal/inclined
sections - Continue with the installation of the

straight vent sections in horizontal/inclined run
as described in Step E. Install support straps
every 5 ft. (1.52 m) along horizontal/inclined
vent runs using conventional plumber’s tape.
See Figure 26, it is very important that the

horizontal/inclined run be maintained in a
straight (no dips) and recommended to be in
a slightly elevated plane, in a direction away
from the fireplace of 1/4" rise per foot (20 mm
per meter) which is ideal, though rise per foot

run ratios that are smaller are acceptable all the
way down to at or near level. Use a carpenter’s
level to measure from a constant surface and
adjust the support straps as necessary.

Twist elbow sections in a clockwise

SV4.5 HT-2

Termination

Shown

Exterior

Wall

SV4.5 HT-2

Termination

Shown

-

17

Siding

Stucco

1-1/4” Maximum Recess of
Square Termination
into Exterior Finishing Material

Exterior Surface of
Framing

Exterior Surface of Siding

Maximum Extent of
Vent Run Sections
Relative to Exterior
Surface of Framing

Interior Surface of
Finished Wall

Last Vent Section.
Use Telescopic Vent
Section (SV4.5LA), If
Necessary

Adapter

SV4.5RCH



Use silicone caulking to seal
the top and sides of the
termination, up to the

underlayment, stucco, or
masonry wall surface.



Caulk



Caulk

Maximum Wall Thickness
10 in. (254 mm)

6 in. to 9-1/4 in.
(152 to 235 mm)





10¹⁄₂"

(267mm)

7"

(178)

5¹⁄₈"

(130 mm)

12¹⁄₈"

(308 mm)

Note: Centerline of Vent Piping is

NOT the Same as the Centerline of

the Framed Opening.

6 to 48 inch Vent Section,

Telescopic vent section,

Elbow or Appliance Collar

Base of Appliance

3"

(76 mm)

1"

(25.4 mm)

Adapter

SV4.5RCH

To help minimize water infiltration it is
recommended that the Firestop/Spacer

(SV4.5HF) be installed on the exterior

side of the wall.

It is important to maintain the required clear­ances to combustibles: 1" (25 mm) at all
sides for all vertical runs; and 3" (76 mm) at
the top, 1" (25 mm) at sides, and 1" (25 mm)
at the bottom for all horizontal/inclined runs

J. Assemble vent run to exterior wall - If not

previously measured, locate the center of the
vent at the exterior wall. Prepare an opening as
described in
to point where the terminus of the last section
is within 6 in. (152 mm) to 9-1/4 in. (235 mm)
inboard of the exterior surface to which the
SV4.5 HT termination is to be attached, see
Figure 28. If the terminus of the last section
is not within this distance, use the
vent section SV4.5LA, as the last vent section.
For wall thicknesses greater than that shown in
Figure 28, refer to Table 7 on Page 19. This table
lists the additional venting components needed
(in addition to the termination and adapter) for
a particular range of wall thicknesses.

K. Attach termination adapter - Attach the
adapter (SV4.5RCH - provided with the termi
nation) to the vent section or telescoping vent
section), elbow or appliance collar as shown

Figure 27 in the same manner as any SV4.5

in
vent component (refer to

L. Install Firestop/Spacer at exterior wall

- When using the square termination, install

SV4.5HF (Secure Vent), SF4.5HF (Secure Flex)
Firestop/Spacer over the opening at the exterior
side of the framing, long side up, with the 3 inch
spacer clearance at the top as shown in
27, and nail into place.

(The Firestop/Spacer may also be installed over the
opening at the interior side of the framing).

M. Install the desired termination -

1. Install the square termination (SV4.5HT-2)

For the last step, from outside the exterior
wall, slide the collars of the termination onto
the adapter (the outer over the outer and the
inner inside the inner) until the termination
seats against the exterior wall surface to which
it will be attached. Orient the housing of the
termination with the arrow pointed upwards.
Secure the termination to the exterior wall.

horizontal termination must not be recessed
into the exterior wall or siding by more than

the 1-1/4" (32 mm) as shown in

The vent termination is hot while in
operation and for a period of time
following the use of the fireplace.
To prevent contact with hot sur­faces, we recommend the use of
a Termination Guard. This can be

purchased at your local dealer.

18

Step B. Assemble the vent system

telescopic

Step E).

Figure 28.

IMPORTANT

Figure

The

See Figure 9 on Page 9 for Min.
Distance to Base of Appliance.

Figure 27 - INSTALLING SQUARE HORIZONTAL TERMINATION (SV4.5HT-2)

-

SV4.5 HT-2

Termination

For thicknesses greater

v

than 10", see Table 7

Venting Connection and Exterior Wall Recessing of the Horizontal Square

Figure 28

Horizontal terminations have been designed to perform in a wide range of weather condi­tions. Our terminations meet or exceed industry standards.

When selecting the locations of your horizontal terminations, do not place the termina-

Termination (SV4.5HT-2).

tion where water from eaves and adjoining rooflines may create a heavy flow of cascad­ing water onto the termination cap. If the cap must be placed where the possibility of
cascading water exists, it is the responsibility of the builder to direct the water away
from the termination cap by using gutters or other means.

Take care to carefully follow the installation instructions for the termination, including
the use of silicone caulking where required.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

SV4.5 HT-2

Termination

SV4.5 HT-2

Termination

H

V



Wall Firestop/Spacer

(SV4.5HF)



When using Secure Flex

,

use Firestop/Spacer

SF4.5VF.



Cei

ling

Firestop

/Spacer

(SV4.5VF)



When using Secure Flex

,

use Firestop/Spacer

SF4.5HF.

H

�

Wall

Firestop/Spacer

(SV4.5HF)

V

�

When using Secure Flex,

use Firestop/Spacer

SF4.5HF

See Table 7 as an aid in venting component selection for a particular
range of exterior wall thicknesses.

Venting Components Required for Various Exterior Wall Thick-

nesses, when using Square Termination Kit (SV4.5HT-2)

Vent Components Required Exterior Wall Thickness - inches (mm)

Termination Kit Only 6 to 9-1/4 (152 to 235)
Termination Kit and 6 In. Vent

Section (SV4.5L6)
Termination Kit and 12 in.

Vent Section (SV4.5L12)
Termination Kit and Tele

scopic Section (SV4.5L12)

Table 7

-

10-3/4 to 14 (273 to 356)

16-3/4 to 20 (426 to 508)

11-3/4 to 20 (299 to 508)

Note: See Figure 28 showing wall thickness range
when using SV4.5HT-2 termination kit only.

HORIZONTAL VENT FIGURES/TABLES

Notes:

• Secure Vent™

in the Figures; Secure Flex™ components (flexible vent pipe and
terminal) may also be used.

•

Two 45 degree elbows may be used in place of one 90 degree elbow.
The same rise to run ratios, as shown in the venting Figures for 90
elbows, must be followed if 45 degree elbows are used.

•

SV4.5VF (Secure Vent), SF4.5VF (Secure Flex) firestop/spacer must be
used anytime vent pipe passes through a combustible floor or ceiling.
SV4.5HF (Secure Vent), SF4.5HF (Secure Flex) firestop/spacer must
be used anytime vent pipe passes through a combustible wall.

• It is very important that the horizontal/inclined run be maintained
in a straight (no dips) and recommended to be in a slightly elevated

plane, in a direction away from the fireplace of 1/4" rise per foot (20
mm per meter) which is ideal, though rise per foot run ratios that are
smaller are acceptable all the way down to at or near level.

•

The tables show a 1(V) to 5(H) ratio up to a maximum horizontal run
of 20 feet except for installations where an elbow is the only vertical
vent section in the system (see Figure 29).

components (rigid vent pipe and terminal) are shown

Table C

H Maximum V Minimum

feet (meter) feet (meter)

3 (0.914) Elbow Only

Square termination
(SV4.5HT-2) shown.

See Table 7 as an aid in venting component selection for a particular
range of exterior wall thicknesses.

Figure 29 - Top Vent -

ONE 90 DEGREE ELBOW - ELBOW CONNECTION AT APPLIANCE

Table D

H Maximum

V Minimum

feet (meter) feet (meter)

5 (1.524) 1 (0.305)

10 (3.048) 2 (0.610)

15 (4.572) 3 (0.914)

20 (6.096) 4 (1.219)

V + H = 40 feet (12.2 m) Max.

H = 20 feet (6.096 m) Max.

Example: If 20 feet of (H) hori­zontal vent run is needed, then

4 feet minimum of (V) vertical
vent will be required.

This table shows a 1(V) to
5(H) ratio. For every 1 foot of
vertical, you are allowed 5 feet
of (H) horizontal run up to a
maximum (H) horizontal run
of 20 feet.

• AN ELBOW IS ACCEPTABLE AS 1 FOOT OF VERTICAL RISE EXCEPT

Under no circumstances, may separate sections of
concentric flexible vent pipe be joined together.

WHERE AN ELBOW IS THE ONLY VERTICAL COMPONENT IN THE
SYSTEM. See Figure 29.

WARNING

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Square termination
(SV4.5HT-2) shown.

See Table 7 as an aid in venting component selection for
a particular range of exterior wall thicknesses.

Figure 30 - Top Vent - ONE 90 DEGREE ELBOW -

ELBOW CONNECTION NOT DIRECTLY AT APPLIANCE

19

V

H

H

1



Wall Firestop/Spacer

(SV4.5HF)



Wall Firestop/Spacer

(SV4.5HF)



When us

i

ng Secure Flex,

use

Firestop/Space

r

SF4.5HF.



Ceiling

Firestop/Spacer

(SV4.5VF)



Note - When us

ing

Secure Flex

TM

, use

Fire

s

top/Spacer SF4.5VF.

HORIZONTAL VENT FIGURES / TABLES (CONTINUED)

V

H

H

1

V

1



Wall Firestop/Spacer

(SV4.5HF)



Ceiling

Firestop/Spacer

(SV4.5VF)



When using Secure Flex,
use Firestop/Spacer

SF4.5VF.



When using Secure

Flex, use Firestop/Spacer

SF4.5HF.



Wall Firestop/Spacer

(SV4.5HF)

Square termination (SV4.5HT-2) shown.

See Table 7 on Page 19 as an aid in venting
component selection for a particular range of
exterior wall thicknesses.

Figure 31 - Top Vent - TWO 90 DEGREE ELBOWS

Table E

H + H1 Maximum

V Minimum

feet (meter) feet (meter)

3 (0.914) Elbow Only

5 (1.524) 1 (0.305)

10 (3.048) 2 (0.610)

15 (4.572) 3 (0.914)

20 (6.096) 4 (1.219)

V + H + H1 = 40 feet (12.2 m) Max.

H + H

= 20 feet (6.096 m) Max.

1

Example: If 20 feet of (H + H1) horizontal vent run is needed,
then 4 feet minimum of (V) vertical vent will be required.

This table shows a 1(V) to 5(H) ratio. For every 1 foot of (V)
vertical, you are allowed 5 feet of (H+ H1) horizontal run, up
to a maximum horizontal run of 20 feet.

An elbow is acceptable as 1 foot of vertical rise except where
an elbow is the only vertical component in the system. See
Figure 29.

20

Figure 32 - Top Vent - THREE 90 DEGREE ELBOWS

Square termination
(SV4.5HT-2) shown.

See Table 7 on Page
19 as an aid in venting
component selection for
a particular range of exte­rior wall thicknesses.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Table F

H + H1 Maximum

V Minimum

feet (meter) feet (meter)

5 (1.524)

Elbow Only

5 (1.524) 1 (0.305)

10 (3.048) 2 (0.610)

15 (4.572) 3 (0.914)

20 (6.096) 4 (1.219)

H + H

= 20 feet (6.096 m) Max.

V + V

Example: If 20 feet total (H+H1) horizontal vent
run is needed, then 4 feet minimum of (V) vertical
vent will be required.

This table shows a 1(V) to 5(H) ratio. For every 1
foot of (V) vertical, you are allowed 5 feet of (H+
H1) horizontal run, up to a maximum horizontal
run of 20 feet.

An elbow is acceptable as 1 foot of vertical rise except
where an elbow is the only vertical component in
the system. See Figure 29.

1

+ H + H1 = 40 feet (12.192 m) Max.

1

VERTICAL OR HORIZONTAL VENTING USING

SECURE FLEX KITS AND COMPONENTS

Secure Flex™ venting kits and components
may be used in any venting application in
place of rigid Secure Vent™ (SV4.5) direct
vent components. All restrictions, clearances
and allowances that pertain to the rigid piping
apply to the flexible venting. Secure Flex kits

may not be modified; also, under no circum­stances may separate sections of flex pipe be
joined together.

Secure Flex kits may be added to the end of a

vent run made up of rigid Secure Vent (SV4.5)
vent sections provided that doing so does not
violate any of the venting length, height, routing,
horizontal to vertical ratio requirements or clear
ance considerations detailed in this manual.

Secure Flex kits come with an adapter that
can be fitted to the inclined channel end of
the last Secure Vent (SV4.5) vent section in a
rigid system in the exact same fashion as any
other Secure Vent section. Align the dimpled
end of the adapter over the previously installed
section or appliance collar, adjusting the radial
alignment until the four locking dimples of the
adapter are aligned with the inlets of the four
incline channels of the last vent section or collar.
Push on the adapter until it fully engages, then
twist the adapter clockwise running the dimples
down and along the incline channels until they
seat at the end of the channels.

Attach the flexible vent to the adapter as fol­lows (see also Figure 33):

A. Install the Inner Flex Pipe -

1. Install the small gear clamp loosely around

the inner flexible vent pipe, push it back out
of the way.

2. Apply a bead of Mill-Pac Black (700° F) high
temperature sealant - Catalog No. 10K81

to the inner adapter collar, approximately
1/2 inch from the end.

3. Pull and extend the inner flexible vent pipe.

4. Slide the inner flex pipe over the adapter col-

lar. Ensure the flexible vent pipe completely
engages the adapter collar to a distance of
1-3/4 inches from the end, and that it is free
from damage or tears.

5. Slide the gear clamp down and tighten it
fully to secure the flexible vent to the adapter
inner collar approximately 3/4 inch from the
end of the flex.

6. Install three screws 120 degrees apart
through the flexible vent pipe and into the
adapter collar just below the gear clamp to
provide additional security to the connec­tion.

Note: Outer Pipe Is Pulled Away To Show
The Detail of The Inner Pipe

APPLY ONLY MIL-PAC BLACK
HIGH TEMPERATURE SEALANT
(Cat. No. 10K81) to the outside
surface of both collars of the
adapter (be especially careful to
fill the grooves of the outer collar
to be covered by the flexible pipe)
and slide flexible pipe over inner
and outer adapter collars.

1-3/4 inch (44 mm) Flexible
Pipe and Adapter Outer Collar
Overlap

-

Adapter (SV4.5RF)

Figure 33

B. Install the Outer Flex Pipe -

1. Install the large gear clamp loosely around

the outer flexible vent pipe, push it back out
of the way.

2. Apply a bead of Mill-Pac Black (700° F) high
temperature sealant - Catalog No. 10K81

to the outer adapter collar; to the grooves
of the collar which extend approximately 1
inch from the end and to the flat surface,
approximately 1-3/8 inches from the end.

3. Pull and extend outer flexible vent pipe.

4. Slide the outer flex pipe over the adapter col-

lar. Ensure the flexible vent pipe completely
engages the adapter collar to a distance of
1-3/4 inches from the end, and that it is free
from damage or tears.

5. Slide the gear clamp down and tighten it
fully to secure the flexible vent to the adapter
outer collar approximately 3/4 inch from the
end of the flex.

6. Install three screws 120 degrees apart
through the flexible vent pipe and into the
adapter collar just below the gear clamp to
provide additional security to the connec­tion.

C. Route Flex Vent -

Ensure that the flex vent is properly routed to
provide the required clearance.
flexible vent to bend in a radius tighter than 5"
(127 mm). Refer to
internal flex vent spacers evenly - approximately
every 6 inches - and avoid kinking of inner pipe.
Support horizontal sections of flex with metal
straps at 2 foot (0.61 m) intervals.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Do not allow the

Figure 34. Space out the

Attach Adapter to Appliance

Collar, or Secure Vent Sections

D. Install Firestop / Spacers at ceilings and walls

- When Secure Flex penetrates a wall or ceiling,

a firestop / spacer is required: use the SF4.5 VF
firestop / spacer for ceilings and the SF4.5 HF
firestop / spacer for walls. See the appropriate
sections and Figures shown throughout the vent
ing section for their installation requirements.

Flexible Vent
Section

Figure 34

E. Attach Flex Vent to Termination -
Secure Flex components can be purchased

separately and attached to bulk lengths of
cure Flex flexible tubing cut to size at the job
site. Secure the flexible vent to the
terminations in the same manner (see

33) as it was attached to the adapter.

Note: Secure Flex vent must be attached to Se­cure Flex terminations only. DO NOT substitute
Secure Vent terminations or the Secure Vent
adapter for Secure Flex components. The collars
of Secure Flex terminations and adapters have a
different diameter than that used with the Secure
Vent pipe. Additionally, Secure Flex components
have an extended length center tube for use in
attaching the flexible vent.

Flex Vent

Securing Screw - 3 Places
Equidistant (equally spaced)
Just Below Gear Clamp)

Gear Clamps

1-3/4 in. (44 mm) Flexible
Pipe and Adapter Inner Collar
Overlap

Securing Screw

- 3 Places, 120° apart
(equally spaced) Just
Below Gear Clamp

5” (127 mm)

Radius

Minimum

Se-

Secure Flex

Figure

-

21

Step 4. FIELD WIRING

ELECTRONIC

WIRING DIAGRAM

JUNCTION BOX

BLK

W

120 V.

24 V.

TRANSF

ELECTRONIC IGNITION

CONTROL BOARD

*WALL MOUNTED ON/OFF SWITCH (OPTIONAL)

OR REMOTE CONTROL RECEIVER

APPLIANCE MOUNTED

ON/OFF SWITCH

PILOT BURNER
IGNITER-SENSOR
ASSEMBLY

GAS VALVE

EV2

EV1

GROUND

CONNECTOR

GREEN LED

WHITE (6)

)

0

2 ( E
T

I H W

) 0 2 ( E G N A

R
O

BLACK (20)

)

9 (

E L
P

R
U P

)

2

1

(
N

E

E
R G

BLUE (20)

BLACK (16)

WHITE

FIELD WIRED

FACTORY WIRED

*Turn The Appliance-Mounted ON/OFF Burner Control Switch
To The OFF Position If An Optional Control Switch Is Installed

Optional

Blower

Ground

TP-TH

TP

TH

APPLIANCE- MOUNTED
ON/OFF SWITCH

BK/W(1)

BK/W(1)

WALL-MOUNTED ON/OFF SWITCH (OPTIONAL)
THERMOSTAT (OPTIONAL)

JUNCTION BOX

BLACK

W

GR

120 V

AC

WALL MOUNTED CONFIGURATION FOR FAN SWITCH (OPTIONAL)

BK

R

WIRING DIAGRAM MILLIVOLT GAS VALVES

THERMOPILE

GAS VALVE

FAN

(OPTIONAL)

Caution: Label all wires prior to disconnection
when servicing controls. Wiring errors can
cause improper and dangerous operation.
Verify proper operation after servicing.

Refer to Section A for millivolt appliances and
Section B for electronic appliances. The gas
valve is set in place and pre-wired at the factory
on both models.

A. Millivolt Wiring (See Figure 35) –

1. Appliance-mounted ON/OFF burner control

switch (rocker switch) is factory installed
in the control compartment. An optional
wall-mounted switch, wall thermostat, or
one of the optional remote control kits may
also be used.

2. If a wall-mounted ON/OFF control or ther­mostat is selected mount it in a convenient
location on a wall near the fireplace.

3. Wire the control switch within the millivolt
control circuit using the 15 feet of 2 conductor
wire supplied with the unit.

Note: The supplied 15 feet of 2 conductor wire
has one end of each conductor connected to
the gas valve circuit and the other end of each
conductor placed loose inside the bottom
compartment.

Caution: Do Not connect the optional wall
switch to a 120V power supply.

4. If an optional control switch is installed, turn

the appliance-mounted ON/OFF burner control
switch to the OFF position.

B. Electronic Wiring (See Figure 36) –

Note: The electronic appliance must be con-

nected to the main power supply.

1. Route a 3-wire 120VAC 60Hz 1ph power
supply to the appliance junction box.

2. Remove the electrical inlet cover plate from
the side of the unit by removing the plate's
securing screws.

See Figure 11A on Page

10.

3. Remove the cover plate's knockout and then
feed the power supply wire through the knock
out opening and into the unit junction box.

4. Connect the black power supply wire to the
red pigtail lead and the white power supply

wire to the
as shown in

common terminal of the outlet

Figures 36 and 37.

5. Connect the ground supply wire to the pig­tail lead attached to outlet's green ground
screw.

6. Appliance-mounted ON/OFF burner control

switch (rocker switch) is factory installed
behind the bottom panel.

Optional wall-mounted switch, wall thermo

stat, or one of the optional remote control
kits may also be used.

7. If wall-mounted ON/OFF control or thermo­stat is to be used, mount it in a convenient
location on a wall near the fireplace.

8. If an optional wall-mounted control is to be
used, wire it in the low voltage circuit as
shown in

Figure 36.

Note: The supplied 15 feet of 2 conductor wire

has one end of each conductor connected to
the gas valve circuit and the other end of each
conductor placed loose inside the bottom
compartment.

9. If an optional control switch is installed,
turn the appliance-mounted ON/OFF burner
control switch to the OFF position.

10. After the wiring is complete, replace the
cover plate.

OPTIONAL BLOWER KIT

(millivolt models only)

If the blower kit is to be installed at the time of
installation or at a later date, the main power supply

-

and wall switch must be installed at the time of
installation.

This will require that the electrical

connections must be made BEFORE the fireplace
is framed and enclosed in the finished walls.

Route a 3-wire, 120 VAC, 60 Hz, 1 ph power
supply and connect to electrical receptacle wires
and wall switch or wall rheostat.

CAUTION

Ground supply lead must be con-

-

nected to the wire attached to the
green ground screw located on the
outlet box. See Figure 37. Failure to
do so will result in a potential safety
hazard. The appliance must be
electrically grounded in accordance
with local codes or, in the absence of
local codes, the National Electrical
Code, ANSI/NFPA 70-latest edition.
(In Canada, the current CSA C22-1
Canadian Electrical Code).

Figure 35

22

Figure 36

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

WARNING

BLOWER CONTROL CIRCUIT WIRING

120V, 60HZ, 1PH

Factory Wired

Ground

Field Wired

Junction Box

Tab Intact

Tab
Broken

Plug blower
into this
receptacle

n
e
e

r
G

­dn

u
o

r
G

* Wall-mounted
ON/ OFF Blower
Switch or Variable
Speed Control Switch.

Blower

e

ti
h
W

­ lar

t
u
e
N

120 VAC - Black

Green
Ground
Screw

White

Green

Neutral
Side of
Receptacle

Hot
Side of
Receptacle

Red

Black

Installing Glass Enclosure Panels
(see Figure 38a and 38b)

Figure 37 - J-BOX WIRING

Step 5. WIRING - OPTIONAL FORCED AIR
BLOWER KIT (See Figure 35 on Page 22)

Do not attempt to substitute
the materials used on this
door. Do not attempt to replace
broken, cracked or chipped glass

separately. The glass door of this
appliance must only be replaced
as a complete unit as provided by
the manufacturer.

WARNING

Do not attempt to touch the front
enclosure glass with your hands
while the fireplace is in use.

Remove the glass door assembly before
proceding to Step 7.

A required firebox liner kit must be installed
prior to installing the glass door. Install the
liner per instructions provided in kit.

These are direct-vent appliances. They are
designed to operate only when the front glass
enclosure panel is installed. Generally the front
glass enclosure panel should not be removed
except to gain access to the components within
the firebox

.

Note: This appliance is not approved for opera­tion without a log set (provided) or a firebox
liner kit installed (sold separately).

1. Visually inspect the gasket on the backside
of the glass panel. The gasket surface must
be clean, free of irregularities and seated
firmly.

IMPORTANT NOTE: Be very careful not to

damage the refractory firebox liner when
installing the door. Take care when seat­ing the top door gasket so that it is not
obstructed by the refractory panel. If the
door feels restricted when latching, the top
door gasket may not be properly seated.

2. Position the glass enclosure panel in front
of the firebox opening at a 45 degree angle
and engage the top flange over the lip at the
top of the firebox opening (read important
note above).

See Figure 38b.

3. Swing the glass enclosure panel down and
back. Ensure the gasket seats evenly as
the panel draws shut. Close the latches to
secure the panel.

4. Reinstall the facade assembly.

An electrical outlet box is provided for the
installation of the
kit. Electrical power must be provided to this
box to operate these blowers. Install the blower
kit according to the installation instructions
provided with the kit.

Step 6. REMOVING GLASS DOOR FRAME
ASSEMBLY

Be careful not to abuse the glass

WARNING

enclosure assembly by striking
or slamming it. Handle this
glass with extreme care! Glass
is susceptible to damage – Do
not scratch or handle roughly
while reinstalling the glass door
frame.

WARNING

Do not operate appliance with
the glass front removed, cracked
or broken.

LBLK-100 forced air blower

During this appliance checkout and adjust
ment period, a potential safety hazard exists

- EXERCISE EXTREME CAUTION to prevent
the occurrence of any burn injuries from the
exposed flames or hot surfaces. Also note,
that while the front glass enclosure panel is
removed, the flame appearance will appear to
be smaller than normal.

Removing Glass Enclosure Panel
(see Figure 38a and 38b)

1. Remove the facade assembly by lifting it
up and toward you (see the installation
instruction sheet provided with the facade
for additional information).

2. Locate the two (2) latches at the top of the
control compartment (see

Figure 38a). To
disengage the two latches, pull the spring­loaded latches forward then down as shown
in

Figure 38a.

3. Swing the bottom of the door out (see
Figure 38b) and raise it slightly to lift the
top flange of the door frame away from the
appliance.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

-

Spring-Loaded Latches
Pull forward then down to release

Figure 38a - Glass Door Latches

Pull Latches

Forward

23

Gas
Valve

3/8" NPT x

Flare Fitting

3/8" Flex Tubing

3/8" Nipple

3/8" Union

3/8" Close Nipple

3/8" Shut-off Valve

1/2" x 3/8"

Reducer

Gas

Stub

1/2" x 3/8" Flare

Shut-off Valve

Gas Solid Line Connector

Gas Flex Line Connector

*Sediment
Trap

3"

Min

Door

Assembly

Figure 38b - Glass Door Removal

Step 7. CONNECTING GAS LINE

TEST ALL CONNECTIONS FOR GAS LEAKS
(FACTORY AND FIELD):

WARNING

Never use an open flame to
check for leaks.

Turn on gas supply and test for gas leaks using a
gas leak test solution (also referred to as bubble
leak solution).
(50% dish soap, 50% water) is an effective leak
test solution but it is not recommended, because
the soap residue that is left on the pipes/fittings
can result in corrosion over time.

Note: Using a soapy water solution

Glass Door

A. Light the appliance (refer to the lighting instruc

tions label in control compartment or care and
operation manual).

B. Brush all joints and connections with the gas

leak test solution to check for leaks. If bubbles
are formed, or gas odor is detected, turn the
gas control knob (off/pilot/on) to the “OFF”
position. Either tighten or refasten the leaking
connection, then retest as described above.

C. When the gas lines are tested and leak free be

sure to rinse off the leak testing solution,

D. Turn on burner then observe the individual

tongues of flame on the burner. Make sure
all ports are open and producing flame evenly
across the burner. If any ports are blocked, or
partially blocked, clean out the ports.

-

Make gas line connections. Codes require a
shut-off valve mounted in the supply line.
40 illustrates two methods for connecting the
gas supply. The flex-line method is acceptable
in the U.S., however, Canadian requirements
vary depending on locality. Installation must
be in compliance with local codes.

These appliances are equipped with a gas flex
line for use (where permitted) in connecting the
unit to the gas line. A gas flex line is provided
to aid in attaching the direct vent appliance to
the gas supply. The gas flex line can only be
used where local codes permit. See
for flex line description. The flex line is rated for
both natural and propane gas. A manual shut off
valve is also provided with the flex line.

If required, access the valve (see
opening the lower control panel (see instruction
sheet provided with the facade kit for additional
information about the control panel).

The millivolt and electronic control valve has a
3/8" (10 mm) NPT thread inlet port.

Bring the shutoff valve on the end of the flex line
over to the hard pipe and tighten with wrenches
from above through the firebox opening.

Secure all joints tightly using appropriate
tools and sealing compounds (ensure propane
resistant compounds are used in propane
applications).

Optional: Seal around the gas line to prevent
cold air leakage.

24

Figure

Figure 40

Figure 39 ) by

Burner

ON/OFF Switch

Figure 39 - Control Compartment

Figure 40

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Push Button
Piezo Igniter

Gas Valve

Line

Gas Shut-

Off Valve

Gas Flex-

GAS CONNECTION

Note: The gas supply line
must be installed in accor­dance with building codes
by a qualified installer
approved and/or licensed
as required by the locality.
In the Commonwealth of
Massachusetts, installation
must be performed by a
licensed plumber or gas
fitter.

*A Sediment Trap is recom­mended to prevent moisture
and debris in gas line from
damaging the valve.

Step 8. Install the firebox liner kit (sold separately), per instruc­tions provided in kit, before proceeding to Step 9.

Step 9. INSTALLING THE LOGS AND GLOWING EMBERS

A FIREBOX LINER KIT MUST BE INSTALLED BEFORE INSTALLING LOGS.
THIS APPLIANCE IS NOT APPROVED FOR OPERATION WITHOUT A
FIREBOX LINER KIT INSTALLED (SOLD SEPARATELY). SEE PAGE 12
IN CARE AND OPERATION MANUAL FOR ORDERING INFORMATION.
INSTALL LINER KIT AND LOG SUPPORT BRACKET PER INSTRUCTIONS
PROVIDED IN KIT.

The logs are packaged in a carton located within the firebox. One plastic
bag of glowing embers is located in the bottom compartment. Refer
to the

Log Set Placement Instructions (Figures 41 to 47) for detailed

placement instructions for the logs and glowing embers.
Proper log and ember placement is critical to encourage outstanding flame

appearance and prevent sooting. These fires are designed to provide a
rich orange/red glow on the logs.

Note: Log setup is by design asymmetric. The fire is intentionally posi­tioned off center to provide a natural fire look.

LOG SET

Catalog Number

* Item

A

B

C

D

E

* Item "letters" above correspond to photos

H1237

Description

Log, Rear

Log, Left Middle

Log, Right Middle

Log, Left Front

Log, Right Front

A

C

B

WARNING

• DO NOT attempt to install the logs until the
appliance installation has been completed, the
gas line connected and tested for leaks and the
initial burner operation has been checked out.

• Logs get very hot and will remain hot up to one
hour after gas supply is turned off. Handle only
when logs are cool. Turn off all electricity to the
appliance before you install logs and embers.

• This appliance is not designed to burn wood.
Any attempt to do so could cause irreparable
damage to the appliance and prove hazardous
to your safety.

• If logs are not installed according to the log
installation instructions, flame impingement
and improper combustion could occur and result
in soot and/or excessive production of carbon
monoxide (CO), a colorless, odorless, toxic
gas.

• The size and position of the log set was engi­neered to give the appliance a safe, reliable
and attractive flame pattern. Any attempt to use
a different log set in the fireplace will void the
warranty and will result in incomplete combus­tion, sooting, and poor flame quality.

Complete the following before starting the log installation.

D

Ember Burner Ports

Glowing Embers

Separate into Quarter

Size (separate) Pieces

Bag of Glowing

Embers (rockwool)

Log Support Bracket

E

This appliance is provided
with enough Glowing Em
bers for several applica
tions, do not use all that is
in a new bag at one time.
For best glowing effect,
replace the ember material
annually.

Firebox

-

-

• READ WARNINGS ON THIS PAGE BEFORE PROCEEDING

•

Remove the front glass enclosure panel (see Glass Enclosure Panel
Removal Instructions, Page 23).

Remove the log set from the firebox and the bag of embers from the

•

control compartment. Handle logs carefully to prevent breakage.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

1

3

Locating Pins - 5 Places

4

Figure 41 - Log Set and Glowing Embers

2

5

25

1. Place the rear log (A) as shown in Figure 42. Position the 2 holes

on the bottom of the log over the corresponding locating pins (#1 &
#2) and against the log support bracket. See
pin and rear bracket locations.

Figures 41 and 42 for

A

1

2

4. Place the right front log (E) as shown in Figure 45

on the bottom of log E over pins #4 and # 5.

. Position the hole

3

4

5

Figure 42 - Install Rear Log (A)

2. Place the left middle log (B) as shown in Figure 43. Position the hole

on the bottom of log B over the corresponding locating pin on Log A.

A

B

Figure 43 - Install Left Middle Log (B)

3. Place the left front log (D) as shown in Figure 44

on the bottom of log D over pin# 3.

. Position the hole

E

Figure 45 - Install Right Front Log (E)

5. Place the right middle log (C) as shown in Figure 46

C behind Log E and resting on the "flat" on Log A.

C

A

E

Figure 46 - Install Right Middle Log (C)

. Position log

26

D

D

3

Figure 44 - Install Left Front Log (D)

6. Ember Placement - Separate the Embers (rockwool) into pieces

about the size of a quarter (see
up, not matted. Distribute these pieces over the surface of the burner,
as shown in

that the main burner ports remain uncovered by the ember material
(see Figure 41).

Figure 47 - Ember Placement

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Figure 41). Keep the pieces fluffed

Figure 47. Do not use more than is necessary. Ensure

DO NOT place ember material directly
over the ember burner ports.

ELECTRONIC

Flame

Sensor

Hood

Igniter Rod

Pilot
Nozzels

MILLIVOLT

Thermocouple

Hood

Igniter Rod

3/8" Min

(9 mm)

Thermopile

Pilot
Nozzels

Step 10. CHECKING APPLIANCE OPERA­TION

IMPORTANT

With gas line installed run initial system check­out before closing up the front of the unit. Follow
the pilot lighting instructions provided in the
Care and Operation Manual. For piezo igniter
location see
appliances only).

Note: Lighting Instructions are also found on the
literature tag tied to the gas piping next to the
gas valve. To access the tag, open the bottom
control panel (see instruction sheet provided
with the facade kit for additional information
about the control panel). See Figure 39 on
Page 24.

When first lighting the appliance, it will take
a few minutes for the line to purge itself of
air. Once purging is complete, the pilot and
burner will light and operate as indicated in
the instruction manual. Subsequent lighting
of the appliance will not require such purging.
Inspect the pilot flame (remove logs, if neces
sary, handling carefully).

Millivolt Appliance Checkout

The pilot flame should be steady, not lifting
or floating. Flame should be blue in color with
traces of orange at the outer edge.

The top 3/8" (10 mm) at the pilot generator
(thermopile) and the top 1/8" minimum (tip)
of the quick drop out thermocouple should be
engulfed in the pilot flame.

The flame should project 1" (25 mm) beyond
the pilot hood at all three ports
Replace logs if removed for pilot inspection.

To light the burner; rotate the gas valve control
knob counterclockwise to the “ON” posi
tion and turn “ON” the appliance mounted
ON/OFF switch (or optional remote switch, if
installed).

Figure 39 on Page 24 (millivolt

(Figure 48).

Figure 48

Electronic Appliance Checkout

To light the burner, turn ‘ON’ the unit mounted
On/Off switch or the optional remote wall switch.
Ensure the igniter lights the pilot. The pilot
flame should engulf the flame rod as shown

Figure 49.

in

-

Figure 49

-

Step 11. BURNER ADJUSTMENTS

WARNING

Air shutter adjustment should
only be performed by a qualified
professional service techni­cian.

Ensure front glass panel are in
place and sealed during adjust­ment.

CAUTION

The air shutter and appliance
surfaces are hot. Exercise caution
to avoid injury while adjusting
air shutter.

Flame Appearance and sooting

Proper flame appearance is a matter of taste.
Generally, most people prefer the warm glow of
a yellow to orange flame. Appliances operated
with air shutter openings that are too large will
exhibit flames that are blue and transparent.
These weak, blue and transparent flames are
termed anemic.

If the air shutter opening is too small sooting
may develop. Sooting is indicated by black puffs
developing at the tips of very long orange flames.
Sooting results in black deposits forming on the
logs, appliance inside surfaces and on exterior
surfaces adjacent to the vent termination. Soot
ing is caused by incomplete combustion in the
flames and lack of combustion air entering the
air shutter opening. To achieve a warm yellow
to orange flame with an orange body that does
not soot, the shutter opening must be adjusted
between these two extremes.

No smoke or soot should be present. These
logs are designed to be involved in the fire.
Flames will impinge the top tips of the right
and left logs.

If the logs are properly positioned and soot
ing conditions exist, the air shutter opening
on the main burner tube should be adjusted.
Normally, the more offsets in the vent system,
the greater the need for the air shutter to be
opened further.

-

-

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

27

Burner Adjustment

To adjust the flame, move the lever arm up or
down (located in the lower control area as shown
in Figure 51). When the arm is positioned all

the way down it is fully open. When the arm is
positioned all the way up, it is closed.

Ensure that the air shutter is closed (push lever
all the way up).

CAUTION: DO NOT BEND THE AIR SHUTTER
ROD. MAKE SURE THE AIR SHUTTER MOVES
WHEN THE LEVER ARM IS OPERATED.

Observe the flame continuously. If it appears
weak or sooty as previously described, adjust
the air shutter up or down until the flame ap­pearance is as desired.

The adjustment rod and associated adjustable
air shutter is patented technology. Flame ad
justments can be made quickly and accurately
to taste without the need of disassembling the
appliance and waiting for 30 minutes after each
adjustment.

When satisfied that the appliance operates
properly, proceed to finish the installation.
Leave the control knob in the ON position and
the burner ON/OFF switch (or optional remote
switch) in the OFF position. Close the lower
control compartment panel.

Note: See Figure 50 for proper burner flame

appearance.

Air Shutter Adjustment Guidelines

• If there is smoke or soot present, first check
the log set positioning to ensure that the
flames are not impinging on any of the logs.
If the log set is properly positioned and a
sooting condition still exists, then the air
shutter opening should be increased.

• The more offsets in the vent system, the larger
the air shutter opening will need to be.

• An appliance operated with the air shutter
opened too far, may have flames that appear
blue and transparent. These weak, blue and
transparent flames are termed anemic.

• Propane models may exhibit flames which

­candle or appear stringy. If this is present
and persists, adjust the air shutter to a more
closed position, then operate the appliance
for a few more minutes to ensure that the
flame normalizes and the flames do not
appear sooty.

Front of Burner

Air Shutter
Adjustment
Rod

Reach around the
left side of the
valve to locate
adjustment rod

Valve

Adjustment
All the way up = CLOSED
All the way down = OPEN

Adjust the rod to the full closed position for
both Natural Gas and Propane. Light the fire­place, then adjust accordingly after heat-up.

Figure 50 - Burner Flame Appearance

Figure 51 - Burner Air Shutter

28

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Fireplace (right side)

1" Min.

(25 mm)*

4" Min �

(102 mm)*

This Area Must
Remain Clear of
Combustible Material

s

Top of

Appliance

Header
(2x4)

Drywall

Spacers

FINISHING REQUIREMENTS - Wall Details

Hearth Extension

Complete finished interior wall. To install the appliance facing flush with
the finished wall, position framework to accommodate the thickness of
the finished wall (

IMPORTANT NOTE:
Place the header verti­cal as shown to main­tain proper clearance
from the vent system to
combustibles.

* Vent to combustible
on Side = 1" Min.
Vent to combustible
on Top = 3" Min.

Figure 52).

A hearth extension is not required with this appliance. If a hearth extension
is used, do not block the lower control compartment panel. Any hearth
extension used is for appearance only and does not have to conform to
standard hearth extension installation requirements.

Note: Combustible wall finish materials and/or surround materials must not
be allowed to encroach the area defined by the appliance front face (black
sheet metal). Never allow combustible materials to be positioned in front of
or overlapping the appliance front face.

Non-combustible materials, such as surrounds and other appliance trim,
may be installed on the appliance front face with these exceptions: they must
not cover any portion of the glass or the air gaps above the glass door.

Vertical installation clearances to combustible mantels vary according
to the depth of the mantel. Mantels constructed of non-combustible
materials may be installed above the appliance opening as outlined in
Figure 3 on Page 6.

u

4" clearance is required above the elbow for installations that require an

elbow at the top of the unit and that ends in a horizontal termination.

Figure 52

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

29

INSTALLATION ACCESSORIES

S

e

a

l

a

n

t

Listed Secure Vent™ Components

Cat. No. Model Description

H1968 SV4.5HT-2 Horizontal Square Ter-

H2152 SV4.5CGV-1 Vertical Termination Cap

Vent Sections

The following flashings come packaged with a storm collar:

77L70 SV4.5L6 6 Inch (152 mm)
77L71 SV4.5L12 12 Inch (305 mm)
77L72 SV4.5L24 24 Inch (610 mm)
77L73 SV4.5L36 36 Inch (914 mm)
77L74 SV4.5L48 48 Inch (1219 mm)

77L75 SV4.5LA Telescopic Section (1-1/2" to

77L76 SV4.5E45 45 Degree Elbow

77L77 SV4.5E90 90 Degree Elbow

77L78 SV4.5F Flat Roof Flashing
77L79 SV4.5FA 1/12 to 7/12 Adjustable

77L80 SV4.5FB 7/12 to 12/12 Adjustable

77L81 SV4.5SC6 Storm Collar (6 per box)

H2246 SV4.5HF Firestop / Spacer-Horizontal

H2247 SV4.5VF Firestop / Spacer-Vertical (1-

H2248 SF4.5HF Firestop / Spacer - Horizon-

H2249 SF4.5VF Firestop/Spacer-Vertical

96K92 SV4.5SP Support Plate

17M52 SV4.5HGS-1 Termination Guard, Square

17M53 SV4.5HGS-12 Termination Guard, Hori-

87L02 SV4.5HGS Termination Guard for

H5820 4.5HTSK Termination Shroud

mination With Firestop /
spacer (H2246) & Adapter
(74L61)

7-1/2" effective length)

Flashing

Flashing

(3-1-1 spacing), 10 Pack

1-1 spacing), 10 Pack

tal (flex) (3-1-1 spacing)
10 Pack

(flex)(1-1-1 spacing)

, 10 Pk

(1 pack)

zontal Square (12 pack)

Horizontal Square Termi­nation (Deluxe) (1 pack)

(Guard) for Horizontal
Square Termination (1
pack)

Listed Secure Vent Components

Cat. No. Model Description

These termination kits include firestop/spacer, gear clamps and flex adapter

H1969 SF4.5HT-2 Horizontal Square Termina-

77L87 SFKIT12S Flex Square Term. (with

77L88 SFKIT18S Flex Square Term. (with

77L89 SFKIT24S Flex Square Term. (with

77L90 SFKIT36S Flex Square Term. (with

77L91 SFKIT48S Flex Square Term. (with

56L74 SFVT30 Vertical Termination for

56L75

SFVT45 Vertical Termination for

60L10 SF-18 18 feet (5.49 m) * com-

98K03 SF-12 12 feet (3.66 m) * com-

10K81 SFMP Mill-Pac, Black, High Tem-

,

89L40 SFMP-12 Mill-Pac, Black, High Tem-

91L66 SF-GC4-6 Gear Clamp 4.5 in. (114

91L67 SF-GC7-6 Gear Clamp 7.5 in. (190.5

99L02 SV4.5HRK14 Horizontal Riser Kit, 14"
99L03 SV4.5HRK36 Horizontal Riser Kit, 36"

H1988 CTSA-33

H1985 CTSO-33

H1987 CTSO-44

H1986 CTSO-46

96K93 SV4.5SU Support Strap

tion (without flex)

12 inch [305 mm] *
compressed flex)

18 inch [457 mm] *
compressed flex)

24 inch [610 mm] *
compressed flex)

36 inch [914 mm] *
compressed flex)

48 inch [1219 mm] *
compressed flex)

flex (flat to 6/12) with flex
adapter, section of rigid
vent, roof support collar
assembly, roof flashing
and storm collar.

flex (6/12 to 12/12) with
flex adapter, section of rigid
vent, roof support collar
assembly, roof flashing
and storm collar.

pressed flex

pressed flex

perature Sealant

perature Sealant - Bulk
12 pack

mm) for flex (6 pieces)

mm) for flex (6 pieces)

Chase Top Shroud Kit, Arch
Top 3 X 3 Ft.

Chase Top Shroud Kit,
Open Top 3 X 3 Ft.

Chase Top Shroud Kit,
Open Top 4 X 4 Ft.

Chase Top Shroud Kit,
Open Top 4 X 6 Ft.

30

H5816

750,247M

SV4.5-TWSK Through Wall Shield Kit

(used to shield the direct­vent pipe from blown
insulation)

Ref. instr. # 750,247M

H3907 SV4.5ARSA Attic Insulation Shield w/

adjustable height, 12"-22"

*All compressed flex vents can be expanded up to two times.

GAS CONVERSION KITS

IMPORTANT/CANADA

Step 1. Turn off the gas supply to the appli-

ance.

WARNING

This conversion kit shall be installed
by a qualified service agency in
accordance with the manufacturer's
instructions and all applicable codes
and requirements of the authorized
having jurisdiction. If the information
in these instructions is not followed
exactly, a fire, explosion or produc­tion of carbon monoxide may result
causing property damage, personal
injury or loss of life. The installation
is not proper and complete until the
operation of the converted appliance
is checked as specified in the owner
instructions supplied with the kit. The
qualified service agency performing
this installation assumes responsibil­ity for this conversion.

AVERTISSEMENT

Cet équipement de conversion sera
installé par une agence qualifiée de
service conformément aux instruc­tions du fabricant et toutes exigences
et codes applicables de l'autorisés
avoir la juridiction. Si l'information
dans cette instruction n'est pas suivie
exactement, un feu, explosion ou pro­duction de protoxyde de carbone peut
résulter le dommages causer de pro­priété, perte ou blessure personnelle
de vie. L'agence qualifiée de service
est esponsable de l'installation propre
de cet équipment. L'installation
n'est pas propre et compléte jusqu'à
l'opération de l'appareil converti est
chéque suivant les critères établis
dans les instructions de propriétaire
provisionnées avec l'équipement.

The conversion shall be carried out
in accordance with the requirements
of the provincial authorities having
jurisdiction and in accordance with
the requirements of the CAN1-B149.1
And B149.2 Installation code.

ATTENTION/CANADA

La conversion devra être effectuée
conformément aux recommanda­tions des autorités provinciales
ayant juridiction et conformément
aux exigences du code d'installation
CAN1-B149.1 ET.2.

Gas conversion kits are available to adapt your
appliance from the use of one type of gas to
the use of another. These kits contain all the
necessary components needed to complete the
task including labeling that must be affixed
to ensure safe operation.

Kit part numbers are listed here and the follow­ing steps detail the conversion procedure.

Millivolt SIT Systems

Natural Gas To Propane Gas

Conversion Kits

Models Cat. No.

ACKMV-NGLP H5778

Millivolt SIT Systems

Propane to Natural Gas

Conversion Kits

Models Cat. No.

ACKMV-LPNG H5779

Electronic SIT Systems

Natural Gas To Propane Gas

Conversion Kits

Models Cat. No.

ACKE-NGLP H5780

Step 2. Carefully remove the logs. Exercise
care so as not to break the logs.

Step 3. Refer to

Remove the burner assembly with attached
venturi tube.

Burner Assembly

Gas Valve

Figure 53.

Burner Orifice

Gas Train Assembly

Figure 53

Millivolt Appliances

Step 4. SIT Systems - Refer to Figure 54 on

Page 32 and the instructions provided with
the kit. Using a Torx T20 (with 1/4” shank
and center hole), remove and discard the
three pressure regulator mounting screws.
Remove the pressure regulator, spring, poppet,
diaphragm and bushing.

components.

Ensure the rubber gasket installed on the back of
the replacement pressure regulator is properly
positioned and install the new pressure regula
tor using the new screws supplied with the kit.
Tighten screws to 25 In. lb. torque.

Discard all removed

-

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

31

SIT Millivolt Gas

HI

LO

Valve Shown

Pressure

Regulator

SIT Electronic Gas Valve

Pressure

Regulator

Remove
These
Components

SIT Millivolt Pilot Assembly Shown

Thermopile
(on millivolt
pilot assem-

Pilot
Orifice

blies only)

SIT Electronic Pilot

Pilot
Orifice

Burner Orifice Sizes

Elevation 0-4500 feet ( 0-1372 meters)

Model

Series

ADAGIO-MN

ADAGIO-MP

ADAGIO-EN

ADAGIO-EP

if field converted

Nat.Gas

drill size (inches)

.067"
(#51)

-------------

.067"
(#51)

-------------

drill size (inches)

Table 8

Propane

-------------

.042"
(#58)

-------------

.042"
(#58)

Millivolt & Electronic Gas Valves

Figure 54

Step 5. Attach manometer to the manifold side
pressure test fitting and verify manifold pressure
reads 3.5 inches water column (0.87 kPa) for
natural gas, and 10.0 inches water column (2.49
kPa) for propane gas.

Step 6. Refer to Figure 55 and remove the
pilot hood assembly to access the hexed pilot
orifice. Remove and replace the orifice with the
one provided with the kit.

Millivolt & Electronic Pilot Assemblies

Figure 55

Step 7. (Refer to Figure 53 on Page 31)

A. Remove the orifice from the manifold and

replace it with the one provided in the kit.
See

Table 8 for orifice sizes for natural and

propane models.
orifice. Use pipe joint compound or teflon
tape when installing the orifice.

B. Retrieve the burner and slide the venturi

tube over the orifice (see
the burner assembly into its position and
secure it.

Figure 56 illustrates the

Figure 53). Set

Figure 56 - Burner Orifice

Step 8. Reassemble the remaining components
by reversing the procedures outlined in the
preceding steps. Use pipe joint compound or
Teflon tape on all pipe fittings before installing
(ensure propane resistant compounds are used
in propane applications, do not use pipe joint
compounds on flare fittings).

Step 9. Attach the conversion label provided
in the conversion kit to the rating plate on the
appliance.

Step 10. Turn on gas supply and test for gas
leaks.

Lennox Hearth Products reserves the right to make changes at any time, without notice, in
design, materials, specifications, prices and also to discontinue colors, styles and products.
Consult your local distributor for fireplace code information.

Printed in U.S.A. © 2007 Lennox Hearth Products

P/N 850,044M REV. D 06/2008

32

1110 West Taft Avenue • Orange, CA 92865