TOA Electronics CR-3835L User Manual

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

36" Wood Burning Fireplaces

P/N 700,024M REV. N/C 05/2004

CR-3835R CR-3835L

MODELS

CUSTOM SERIES

This installation manual will enable you to obtain a safe, efficient and

dependable installation of your fireplace system. Please read and under-

stand these instructions before beginning your installation.

Do not alter or modify the fireplace or its components under any

circumstances. Any modification or alteration of the fireplace system,

including but not limited to the fireplace, chimney components and

accessories, may void the warranty, listings and approvals of this system

and could result in an unsafe and potentially dangerous installation.

IMPORTANT! TO ASSURE PROPER ALIGNMENT OF GLASS DOORS:

INSTALL THIS FIREPLACE IN A SQUARE AND PLUMB CONDITION,

USING SHIMS AS NECESSARY AT SIDES AND/OR BOTTOM.

PLEASE RETAIN THIS MANUAL FOR FUTURE REFERENCE.

INSTALLATION

INSTRUCTIONS

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

OTL Report No. 116-F-20-4

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

TABLE OF CONTENTS

Safety Rules .................................... page 2

Tools and Building Supplies ............ page 2

Precautions ..................................... page 2

Introduction ..................................... page 3

Clearances/Height Requirements..... page 3

Chimney System ............................. page 3

Assembly Outline............................. page 4

Location of Fireplace ....................... page 4

Assembly Steps ............................... page 5

Preinstallation Notes........................ page 5

Clearances ....................................... page 5

Installing the Fireplace ..................... page 5

Fireplace Specifications .................. page 6

Framing Specifications.................... page 7

Installing the Chimney System ........ page 8

30° Offset through Floor/Ceiling ...... page 9

Ten Foot Rule Summary .................. page 11

Multiple Terminations ...................... page 11

Chimney Component Calculations ... page 11

Special Offset Instructions............... page 11

Offset Calculations........................... page 12

Vertical Elevation Chart ................... page 13

Offset Elevation Chart ..................... page 15

Installing Offsets.............................. page 17

Combustion Air Kits ........................ page 17

Gas Line Connection........................ page 17

Glass Doors ..................................... page 18

Cold Climate Insulation.................... page 18

Fireplace Finishes ............................ page 18

Mantels and Trim............................. page 18

Hearth Extensions/Wall Shields ....... page 18

Finish Requirements ........................ page 20

Installation Components .................. page 20

IMPORTANT: PLEASE READ AND

UNDERSTAND THESE RULES TO

FOLLOW FOR SAFETY.

1. Before starting your fireplace installation,

read these installation instructions carefully to

be sure you understand them completely and in

entirety. Failure to follow them could cause a

fireplace malfunction resulting in serious injury

and/or property damage.

2. Always check your local building codes. The

installation must comply with all local, regional,

state and national codes and regulations.

13. DO NOT use a fireplace insert or any other

products not specified herein by the manufac-

turer for use with this fireplace. All gas log sets

must be operated with the damper clamped

open, including unlisted “vent free” log sets.

Listed “vent-free” log sets may be operated

with the damper closed.

14. "Smoke free” operation is not warranteed

nor are we responsible for inadequate system

draft caused by mechanical systems, general

construction conditions, inadequate chimney

heights, adverse wind conditions and/or un-

usual environmental factors or conditions be-

yond our control.

15. Never, under any circumstances, install a

fireplace, chimney component or any acces-

sories, that has visible or suspected physical

damage as a result of handling or transporta-

tion. These items should be inspected by your

distributor or qualified factory representative

to ensure safe condition. When in doubt, con-

sult your distributor.

16. For additional safety considerations and

complete operating instructions, refer to the

Care and Operation Manual provided with the

fireplace.

TOOLS AND BUILDING SUPPLIES

NORMALLY REQUIRED

Tools should Include:

Phillips screwdriver

Hammer

Saw and/or sabersaw

Level

Measuring tape

Plumb line

Electric drill and bits

Pliers

Square

Building supplies:

Framing materials

Wall finishing materials

Caulking materials (noncombustible)

Fireplace surround and hearth

extension materials (noncombustible)

PRECAUTIONS

Note: These fireplace systems are not difficult

to install. However, in the interest of safety, it is

recommended that the installer be a qualified or

certified “tradesman” familiar with commonly

accepted fireplace installation and safety tech-

niques as well as prevailing local codes.

3. These fireplaces must be installed with either

Security Chimneys model FTF8 (8" [203mm]

inside diameter) or FTF10 (10" [250mm] inside

diameter) Chimney System only. These sys-

tems are intended for use in any application

where a traditional masonry type fireplace would

apply. The chimney system must always vent to

the outside of the building.

4. To ensure a safe fireplace system and to prevent

the build-up of soot and creosote, inspect and

clean the fireplace and chimney prior to use and

periodically during the heating season.

5. Use solid fuel only. DO NOT use artificial

wax based logs, chemical chimney cleaners or

flame colorants in your fireplace.

6. DO NOT use charcoal or coal under any

circumstances.

7. NEVER use gasoline, gasoline-type lantern

fuel, kerosene, charcoal lighter fluid, or similar

liquids to start or “freshen up” a fire in this

fireplace. Keep any flammable liquids a safe

distance from the fireplace.

8. NEVER leave children unattended when

there is a fire burning in the fireplace.

9. Always keep flue damper open when heat is

present in the fireplace.

10. Before servicing, allow the fireplace to

cool. Always shut off any electricity or gas to

the fireplace while working on it. This will

prevent any possible electrical shock or burns.

11. This fireplace is not intended to heat an entire

home or be used as a primary heat source. It is

designed to ensure homeowner comfort by pro-

viding supplemental heat to the room.

12. Always ensure an that adequate supply of

replacement combustion air from the outside

of the house is accessible to the fire to support

normal combustion. Fireplaces consume large

volumes of air during the normal combustion

process. In the event the home is tightly sealed

with modern energy efficient features, the op-

tional combustion air kit may not provide all

the air required to support combustion.

The manufacturer is not responsible for any

smoking or related problems that may result

from the lack of adequate combustion air. It is

the responsibility of the builder/contractor to

ensure that adequate combustion air has been

provided for the fireplace.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

Figure 1

TYPICAL INSTALLATION

*Construction Materials:

• framing materials • paneling

• particle board • flooring

• millboard • dry wall

• plywood • etc.

The most important areas of concern dealing

with the installation of factory-built fireplaces are

clearances to combustible materials, proper as-

sembly of component parts, height of the chim-

ney system, the proper use of accessories sup-

plied by the manufacturer and the techniques

employed in using finishing materials applied to

the wall surrounding the fireplace, hearth exten-

sions and wall shields. Each of these topics will

be covered in thorough detail throughout this

manual. Please give each your special attention

as you progress with your installation.

INTRODUCTION

General Information

These fireplaces are conventional radiant heat

fireplaces with standard bar grates, optional

outside combustion air kits and optional deco-

rative glass doors.

These fireplaces have been tested and listed by

Omni Test Labs (Report No.116-F-20-4) to

U.L. standard 127. These units are intended

for installation in residential homes and other

buildings of conventional construction includ-

ing commercial, not in mobile homes.

Note: Illustrations shown reflect “typical”

installations with nominal dimensions and

are for design and framing reference only.

Actual installations may vary due to indi-

vidual design preferences. However, always

maintain minimum clearances to combus-

tible materials and do not violate any specific

installation requirements.

These fireplace systems are designed for in-

stallation in accordance with the National Fire

Protection Standard for chimneys, fireplaces

and solid fuel burning appliances; NFPA 211

and in accordance with codes such as the

BOCA Basic/National Codes, the Standard Me-

chanical Code and the Uniform Building Codes.

When complete these fireplace systems con-

sists of five basic “sub-systems”:

1. The Fireplace

2. The Chimney and Termination

3. The Optional Glass Doors

4. The Optional Combustion Air Kits

5. The Chimney Collar Enclosure Kit (Canada

Only) or Collar Duct Kit (U.S)

CLEARANCES AND HEIGHT

REQUIREMENTS

The fireplace may be placed on or near normal

construction materials*. The combustion air

kit, firestop spacer and roof flashings (not

chase flashings) may be placed directly on or

against normal construction materials*. The

chimney requires a minimum 2" (51 mm) air

space to combustibles (

See

**Note

). A com-

bustible mantle may be installed 12" (305 mm)

above the opening of the fireplace as per NFPA

211, Section 7-3.3.3. In Canada the minimum

is 18" (457 mm) above the opening.

The fireplace and chimney system must be

enclosed when installed in or passing through

a living area where combustibles or people may

come in contact with it. This is important to

prevent possible personal injury or fire hazard.

For questions, please call your distributor or

the manufacturer. Special restrictions apply to

the front and facing of the fireplace and nearby

walls (See pages 16, 17 and 18 ).

CHIMNEY SYSTEM

These fireplaces are designed and code listed

for use with Security's FTF8 and FTF10 chim-

ney System only. Always use Security's FTF8

and FTF10 chimney components with these

fireplaces. Do not modify or alter these com-

ponents as this may cause a potential serious

hazard and void the Warranty.

WARNING: FAILURE TO USE MANUFAC-

TURE PROVIDED PARTS, VARIATIONS

IN TECHNIQUES AND CONSTRUCTION

MATERIALS OR PRACTICES OTHER THAN

THOSE DESCRIBED IN THIS MANUAL

MAY CREATE A FIRE HAZARD AND VOID

THE LIMITED WARRANTY.

** Note: 1" (25 mm) when installed with FTF10

in the U.S. only.

Outside

Combustion

Air Kit

(Optional)

Chimney

And

Termination

CCEK

W.H.I. Approved

(Required In

Canada)

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

WARNING: IF INSULATION IS USED, THE

FIREPLACE MUST NOT BE PLACED DI-

RECTLY AGAINST IT. INSULATION OR

VAPOR BARRIERS, IF USED, MUST FIRST

BE COVERED WITH GYPSUM BOARD,

PLYWOOD, PARTICLE BOARD OR OTHER

MATERIAL TO ASSURE INSULATION AND

VAPOR BARRIERS REMAIN IN PLACE.

Figure 2

Chimney Height

The total height of your completed fireplace sys-

tem from the surface the fireplace rests on to the

chimney top must not exceed 50' (15.24 m) and

must also meet minimum height requirements.

Refer to the minimum system height chart.

Minimum System Height

FTF10 FTF8

Vertical 15'2" 16'8"

Installation (4.62 m) (5.08 m)

One 15'2" 16'8"

Offset (5.98 m) (4.57 m)

Two 25'0" 25'0"

Offsets (7.62 m) (7.62 m)

LOCATION OF FIREPLACE

Carefully select the proper location for heat

circulation, aesthetics, chimney obstructions

and clearance to side wall(s). With proper pre-

planning, a slight adjustment of a few inches

can save considerable time and expense later

during construction and assembly.

Figure 4

Carefully consider the position of the fireplace

opening with respect to the location of adja-

cent or nearby stairwells, bath or kitchen ex-

haust fans and/or return air registers for forced

air furnaces/air conditioners that could cause

a smoking fireplace condition if the house is

tightly insulated.

When locating the fireplace, consideration must

be given to combustibles and final finishing.

See

Figure 5

and confine the final location of

combustible finish materials to the "Safe Zone".

DO NOT permanently place furniture or other

items such as decorative pillows within 60" of

the fireplace front face.

Insulate Joists

Same As Ceiling

Draft Stops

Firestop

CTDT

Termination

Note: Non-

Combustible

Chase

Flashing

Must Be

Used To

Cover

Chase

Opening

Optional

Insulation

In Outside

Walls Of

Chase

Solid

Continuous

Surface

Outside

Base

Insulation

(Thermal Barrier)

Level

Note: Do not insulate the chase cavity with

blown or fill type insulation materials.

Note: Local codes may not require firestopping

at the ceiling levels for outside chase installa-

tions. However, it is recommended for safety

and the reduction of heat loss.

WARNING: DO NOT PACK OR FILL RE-

QUIRED AIR SPACES WITH INSULATION

OR OTHER MATERIAL. NO MATERIAL IS

ALLOWED IN THESE AREAS.

Figure 5

Chase Enclosure

A chase is a vertical box-like structure con-

structed to surround the fireplace and chimney.

Refer to

Figure 2

for a typical chase configura-

tion. As with all chimney installations, avoid

overhead obstructions such as trees, power

lines, etc. A chase should be constructed and

insulated just like any outside wall. In a cold

climate, we recommend the base of the chase

should also be insulated between the solid

continuous floor beneath the fireplace and the

chase bottom. Chase insulation in a cold cli-

mate installation is not required for safety.

ASSEMBLY OUTLINE

Before You Start

Check your inventory list to be sure you have all

the necessary parts supplied in good usable

condition. Check also for any concealed damage.

Check the operation of the damper. The damper

is controlled through the use of a control lever

located within the firebox opening at the top

center just behind the firebox lintel (

Figure 3

The control lever snaps into place at the ex-

treme range of motion, up and back in the

closed position. When pulled forward and

down, the damper is open.

Figure 3

Damper

Closed

Damper

Open

Lintel

Combustion

Air Actuator

Inside

Corner

Installation

Hearth

8" (203mm) Min.

To Protected Side

Wall

Outside

Corner

Installation

12"

Min. Distance To

Unprotected Side Wall

45°

Combustible

Materials

Allowed In

Shaded Area

“Safe Zone”

Min. Distance To

Protected Side Wall

Fireplace

11 ⁷⁄₈”

15 ⁷⁄₈”

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

Note: Install the hearth extension only as illus-

trated.

The safety strips should extend from front of

the fireplace at least 1 ¹⁄₂" and should extend to

be at least flush with the sides. In the event a

wooden support is used to elevate the fireplace

above the floor, a “Z” type safety strip should be

fabricated and used to protect the front surface

of the wood support as well as the floor beneath

the hearth extension (

Figures 8 and 9

). The

safety strips should be tacked down to prevent

possible movement.

Note: The “Z” type safety strip is not supplied.

2. Measure the square footage of the floor

space to be occupied by the system, surrounds

and hearth extensions.

3. Note the floor construction, i.e. 2 x 6’s, 2 x 8’s

or 2 x 10’s, single or double joists, type and

thickness of floor boards.

4. Use this information and consult your local

building code to determine if you need addi-

tional support.

CAUTION: DO NOT BLOCK THE HEAT-CIRCU-

LATING AIR INLET AND OUTLET PORTS ON

CIRCULATING MODELS. DOING SO MAY RE-

SULT IN A POTENTIAL FIRE HAZARD.

If you plan to raise the fireplace and hearth

extension, build the platform assembly then

position fireplace and hearth extension on top.

Secure the platform to the floor to prevent

possible shifting.

CLEARANCES

Minimum clearance to combustibles for the

appliance is as follows: sides and back - ¹⁄₂" (13

mm), floor - 0" (0 mm), adjacent wall - 12" (305

mm), ceiling - 37 ¹⁄₂" (953 mm).

INSTALLING THE FIREPLACE

Step 1. Slide the fireplace into prepared fram-

ing or position fireplace in its final position and

frame later.

The fireplace may not be recessed into a com-

bustible floor. Maintain the floor to hearth clear-

ance established by the fireplace lower front face.

Step 2. Insert the provided metal safety strips,

beneath the fireplace as illustrated (

Figures 6, 7

and 8

). The safety strips should overlap ¹⁄₂" for

continual coverage of the floor.

Note: Safety strips are not required when fire-

place rests on a noncombustible surface.

ASSEMBLY STEPS

Note: The following steps represent the normal

sequence of installation. Each installation is

unique, however, and might require a different

sequence.

1. Position firebox prior to framing or into

prepared framing.

2. Install the chimney system.

3. Connect house wiring to the fireplace for

later attachment of optional blower.

4. Install optional outside combustion air kit.

5. Plumb gas line if a decorative gas appliance

will be used. (Gas connections should only be

performed by an experienced, licensed/certi-

fied tradesman.)

6. Complete the installation, finish wall mate-

rial, surround and hearth extension to your

individual taste.

7. Assemble and attach optional glass door

assembly.

Study the three dimensional illustration (

Fig-

ure 1

) to get a general idea of each element of

your fireplace system.

PRE-INSTALLATION NOTES

The fireplace may be installed directly on a

combustible floor or raised on a platform of an

appropriate height. Do not place fireplace on

carpeting, vinyl or other soft floor coverings. It

may, however, be placed on flat wood, ply-

wood, particle board or other hard surfaces.

Be sure fireplace rests on a solid continuous

floor or platform with appropriate framing for

support and so that no cold air can enter the

room from under the fireplace.

The fireplace may be positioned and then the

framing built around it, or the framing may be

constructed and the fireplace positioned into

the opening.

Usually, no special floor support is needed for

the fireplace, however, to be certain:

1. Estimate the total weight of the fireplace

system including chimney and surround ma-

terials such as brick, stone, etc., to be in-

stalled. Shipping weights for the fireplace may

be found on page 18.

Figure 7

Figure 6

1/2" (13mm)

Clearance To

Back And Sides

Combustible

Wall

Metal

Safety Strip

Hearth

Extension

Floor

Fireplace And

Hearth Extension

On Floor

1/2"

(13mm)

Figure 8

Metal

Safety Strip

(51mm)

Special “Z”

Metal Safety Strip

(51mm)

Blocking

Figure 9

Step 3. Refer to fireplace drawings and specifi-

cations on pages 6 and 7 for framing dimensions

and details. Frame appliance enclosure as illus-

trated in

Figures 11 through 14

on page 8.

1/2" (13mm)

Clearance To

Back And Sides

Combustible

Wall

Metal

Safety Strip

Hearth

Extension

Floor

Platform

Fireplace And

Hearth Extension

On Raised Platform

1/2"

(13mm)

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

FIREPLACE SPECIFICATIONS

Figure 11

17 1/2"

(445mm)

32 7/8"

(835mm)

21"

(533m)

(152mm)

40 1/2"

(1029mm)

37 3/8"

(949mm)

42 3/4"

(1086mm)

38 5/8"

(981mm)

17 1/2"

(445mm)

32 7/8"

(835mm)

21"

(533m)

(152mm)

40 1/2"

(1029mm)

37 3/8"

(949mm)

42 3/4"

(1086mm)

38 5/8"

(981mm)

10"

(254mm)

40 1/4"

(1022mm)

10 1/2"

(267mm)

7 1/2

(191mm)

40 1/4"

(1022mm)

19 7/8"

(505mm)

10"

(254mm)

35"

(889mm)

15"

(381mm)

42 3/4"

(1086mm)

10"

(254mm)

24"

(610mm)

Right Corner Opening

Closed End

Left Corner Opening

Open End

Top View

For Canadian Installations

Proceed with Steps 4 through 7.

Step 4. Attach the chimney collar enclosure kit,

Model CCK1, around chimney collar with the

screws provided (

Figure 10

Step 5. Connect the 4" (102 mm) Class 0 air

duct provided to the collar on the chimney

collar enclosure with the screws provided in the

hardware kit.

IMPORTANT: UNDER NO CIRCUMSTANCES

CAN THE FIREPLACE TOP SPACERS (

FIGURE

) BE REMOVED OR MODIFIED, NOR MAY

YOU NOTCH THE HEADER TO FIT AROUND

OR BE INSTALLED LOWER THAN THE SPAC-

ERS. THE HEADER MAY BE IN DIRECT CON-

TACT WITH THE TOP SPACERS BUT MAY NOT

BE SUPPORTED BY THEM.

Note: The framed depth, 21

³⁄₄

" (552 mm) from

a framed wall, must always be measured from

a finished surface. If a wall covering such as

drywall is to be attached to the rear wall, then

the 21

³⁄₄

" (552 mm) must be measured from

the drywall surface. It is important that this

dimension be exact.

If the appliance is to be elevated above floor

level, a solid continuous platform must be

constructed.

The header may rest on the top metal spacers,

but must not be notched to fit around them.

Consult all local codes.

Enclosure

Box

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

FRAMING SPECIFICATIONS

Framing Dimensions

CR-3835 Series

A 42 ¹₂"

(1080 mm)

B 40 ⁵₈"

(1032 mm)

C 24 ¹₂"

(622 mm)

D 34 ³₄"

(883 mm)

E 46 ⁵₈"

(1184 mm)

F 45"

(1143 mm)

Figure 16

Figure 15

Figure 12

Figure 13

Figure 14 Figure 17

Framing Dimensions for Ceiling

Flue Type A B

FTF8 Vertical 16 ¹⁄₂" 16 ¹⁄₂"

at 2" (419 mm) (419 mm)

FTF10 Vertical 17" 17"

at 1" (432 mm) (432 mm)

FTF10 Vertical 19" 19"

at 2" (483 mm) (483 mm)

FTF8 Offset 30° 16 ¹⁄₂" 27"

at 2" (419 mm) (686 mm)

FTF10 Offset 30° 17" 26"

at 1" (432 mm) (660 mm)

FTF10 Offset 30° 19" 28"

At 2" (438 mm) (711 mm)

Framing Dimensions for Roof

Pitch FTF8 at 2" FTF10 at 1" FTF10 at 2"

CD*CD*CD*

0/12 16 ¹⁄₂" 16 ¹⁄₂" 17" 17" 19" 19"

(419 mm) (419mm) (432 mm) (432 mm) (483 mm) (483 mm)

6/12 16 ¹⁄₂" 19" 17" 19" 19" 21"

(419 mm) (483 mm) (432 mm) (483 mm) (483 mm) (533 mm)

12 /12 16 ¹⁄₂" 23 ¹⁄₂" 17" 24" 19" 26"

(419mm) (597mm) (432mm) (610 mm) (483mm) (660 mm)

*Perpendicular to roof ridge

Ceiling Framing

Roof Framing

Framing Without False Header

Header

TOB

Outside Corner Using Outside Air

3" (76mm) Min.

Back Wall of Chase/Encloslure

Including Finishing

Materials if any

Rough

Framing Face

(Unfinished

Shown)

Outside Corner

Back Wall of Chase/Encloslure

Including Finishing

Materials if any

Rough Framing

Face (Unfinished

Shown)

11 ⁷⁄₈"

(302mm)

45°

8" Max.

(203mm)

8" (203mm) Min. To

Protected Side Wall

ATO-4

Inside Corner Using Outside Air

Note: Combustible Materials

May Be Placed In Shaded Area.

Note: No Wall Shield

Required On This Wall

Back Wall of Chase/Encloslure Including

Finishing Materials if any

Rough

Framing

Face

(Unfinished

Shown)

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

Step 8. Fireplace should be secured to side

framing members using the full length nailing

tabs at the top and bottom of the fireplace front

face. Use 8d nails (

Figure 18

Note: The nailing tabs and the area directly

behind the nailing tabs are exempt from the

clearances described on page 5. Maintain at

least 1/2" clearance from the firebox wrapper to

the framing at the closest point of contact,

directly adjacent to the flange.

Figure 19

8d Nail

Step 3. Position appropriate firestop spacer at

ceiling and nail temporarily with two (2) 8d

nails. If chimney penetrates ceiling vertically,

use flat firestop spacer, Model F8FS-2 for FTF8

system and Model F10FS-2 for the FTF10

system*. If chimney penetrates ceiling at 30°

angle (offset chimney), use 30° firestop spacer,

Model F8FS30-2 for FTF8 and Model F10FS30-

2 for FTF10 system*. Use one nail on opposite

sides to hold firestop spacer in position. Nail

permanently, using at least two (2) more 8d

nails, after chimney sections have been as-

sembled through the firestop spacer and after

any necessary adjustments have been made.

Firestop spacer must be secured by at least

four (4) 8d nails when completely installed.

Note: If there is a room above ceiling level,

firestop spacer must be installed on the bottom

side of the ceiling. If an attic is above ceiling

level, firestop spacer must be installed on top

side of ceiling joist (Figures 20 and 21 ).

Figure 20

Figure 21

Firestop Spacer

Room Above

Firestop Spacer

Attic Above

INSTALLING THE CHIMNEY SYSTEM

Step 1. Before continuing, check the operation

of the damper, as described on page 4, (

refer

to Figure 3

Step 2. Using standard construction framing

techniques, construct opening for chimney

route up through the ceiling(s) and roof or

through an outside chase.

Framing must maintain adequate minimum air

space clearance at all times.

CAUTION: ALLOW MINIMUM 2" (51 MM)

CHIMNEY AIR SPACE TO COMBUSTIBLE

FRAMING MEMBERS THROUGHOUT VERTI-

CAL OR OFFSET CHIMNEY INSTALLATION

(

SEE **NOTE

A minimum 2" (51 mm) air space must be

reserved for all combustible materials ex-

tending for any continuous length surround-

ing the chimney (

See **Note

Reference

Figures 15 and 16

and charts Fram-

ing Dimensions for Ceiling and Roof, which

specify minimum ceiling and roof dimensions.

To determine chimney center line in new con-

struction, use plumb line from roof or ceiling

above fireplace to center of flue collar on

fireplace.

For remodeling, plumb to center of flue collar

from ceiling above, drive nail through ceiling

from below to mark position, then mark and

cut to passage from above ceiling (around

nail) (

Figure 19

). Then plumb from ceiling or

roof level directly above hole which has just

been completed.

Step 6. Route the Class 0 air duct out the back

wall or side wall, up through the ceiling or floor

joists to an outside wall. The air duct should be

located above snow level.

Note: If the fireplace is installed against an

inside wall, the Class 0 air duct may be ex-

tended into a ventilated attic space at least 18"

(457 mm) above the attic floor. Secure the duct

hood to a vertical post with the inlet positioned

downward. Ensure nothing blocks the hood

opening. This air duct must never terminate

higher than the chimney.

Step 7. Cut or frame hole through the outside

wall for the installation of the duct inlet hood.

A 4 ¹⁄₄" (114 mm) diameter hole is sufficient.

Feed the loose end of the flexible air duct

through the hole cut for the inlet hood and

attach to collar on inlet hood using two (2)

screws. Insert hood into opening. Secure in

place with nails driven through holes in hood

flange. Seal with noncombustible waterproof

silicon type caulking. If additional air duct is

needed, use Class 0 metallic air duct.

*Note: Use Models F10FS or F10FS30 when

installing FTF10 chimney in the U.S. only.

** Note: 1" (25 mm) when installed with FTF10

in the U.S. only.

Plumb Line

Note: If installing the optional collar duct kit, it

should be installed after the chimney has been

attached to the flue collar.

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