Lennox Hearth C42 User Manual

INSTALLATION AND OPERATION MANUAL

TM

US

Portland

Direct-Vent

Gas Fireplace

Retain These Instructions For Future Reference

P/N 775,219M Rev. B, 08/2008

A French manual is available upon request. Order P/N 775,219CF.

Ce manuel d’installation est disponible en francais, simplement

en faire la demande. Numéro de la pièce 775,219CF.

In the Commonwealth of Massachusetts:

• Installation must be performed by a licensed plumber or gas tter

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

Report No.050-S-08c-5

WARNINGS

• Hot! Do not touch! The glass and surfaces of this appliance will be hot during operation and will
retain heat for a while after shutting off the appliance. Severe burns may result.

• Carefully supervise children in the same room as appliance. If small children are present in the home, it
is recommended that this appliance be fitted with a screen door. See Page 37 for ordering information.

Ravelle™ 42 (RAVL42)

• These appliances may be installed in an aftermarket permanently located, manufactured (mobile) home (USA
only), 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.

• Lennox Hearth Products gas-burning appliances are designed for use as a supplemental heater. They are not
intended for continuous use as a primary heat source.

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

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.

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

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.

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

IMPORTANT SAFETY AND WARNING
INFORMATION

FOR YOUR SAFETY do not install or operate your

Ravelle™ 42 gas fireplace without first reading and
understanding this manual. Any installation or operation
of the appliance deviating from that which is stated in
this manual WILL void the warranty and may be hazard­ous.

 INSTALLATION AND REPAIR SHOULD ONLY BE DONE BY

A QUALIFIED SERVICE TECHNICIAN. DO NOT ATTEMPT
TO SERVICE THE APPLIANCE YOURSELF.

 The fireplace should be inspected and cleaned before

use and at least annually by a qualified service techni­cian. More frequent cleaning may be required due to
excessive lint from bedding material, carpeting, etc.

 It is imperative that control compartments, burners and

circulating air passageways of the room heater be kept
clean.

 Adequate clearances around the combustion chamber

and accessibility clearances for servicing and proper
operation must be maintained.

 Turn off the gas before servicing this appliance. It is

recommended that a qualified service technician per­form an appliance check-up at the beginning of each
heating season.

 All installations must conform with all local, state

and national codes. In the absence of local codes, the
installation must conform with National Fuel Gas Code
ANSI Z223.1-latest edition, also known as NFPA 54
(In Canada, the current CAN/CSA B149.1 installation
code). Refer to the National Fuel Gas Code and local
zoning and code authorities for details on installation
requirements. Your Ravelle 42 gas fireplace must be
vented to the outside in accordance with the latest
edition of the National Fuel Gas Code.

 This gas fireplace MUST be vented directly to the outside

and MUST NEVER be attached to a chimney serving a
separate solid fuel burning appliance. Each gas appli­ance MUST USE a separate vent system. Common vent
systems are PROHIBITED.

 Mobile home installations must conform with the Mobile

Home Construction and Safety Standard, Title 24 CFR,
Part 3280 (in Canada CAN/CSA Z240 MH), or, when such
a standard is not applicable, the Standard for Mobile
Home Installations, ANSI A225.1 - latest edition.

 The appliance, when installed, must be electrically

grounded in accordance with local codes or in the ab­sence of local codes, with the National Electrical Code,
ANSI/NFPA 70 - latest edition. In Canada, the current
CSA C22-1 Canadian Electrical Code - latest edition.

 Do not make any make-shift compromises during in-

stallation. Any modification or alteration may result
in damage to the appliance or dwelling and will void
the warranty, certification and listings of this unit.

2

Failure to use manufacturer 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.

Your Lennox Hearth Products gas fireplace must be

equipped for the proper fuel type and altitude at which
it will be operated. Any operation outside the param­eters outlined in this manual may result in a hazardous
condition and will void the warranty. Please carefully
read the sections pertaining to these subjects and/or
be sure your appliance is properly equipped.

 Do not use this fireplace if any part has been under

water. Immediately call a qualified service technician
to inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.

 Due to high temperatures, the fireplace should be lo-

cated out of traffic areas and away from furniture and
draperies.

 Children and adults should be alerted to the hazards

of high surface temperature and should stay away to
avoid burns or clothing ignition. Young children should
be carefully supervised when they are in the same room
as the Lennox Hearth Products gas fireplace. Clothing
or any other flammable material should not be placed
on or near the fireplace.

 Never use solid fuels such as wood, paper, cardboard,

coal, or any flammable liquids, etc., in this appli­ance.

Any grill, panel, or glass removed for service MUST be

replaced prior to operating the fireplace. Do not oper­ate appliance with the glass front removed, cracked or
broken. Replacement of the glass should be done by a
qualified service technician.

 DO NOT USE abrasive cleaner on the glass door as-

sembly. DO NOT ATTEMPT to clean the glass door when
it is hot.

 Gold and nickel plated surfaces must be cleaned with

glass cleaner and a clean soft cloth before firing the first
time or fingerprints will remain permanently. NEVER use
brass polish to clean gold or nickel, this will remove
the plating!!!

 Lennox Hearth Products, its employees, or any of its

representatives assume no responsibility for any dam­ages caused by an inoperable, inadequate, or unsafe
condition as a result of any improper operation, service
or installation procedures, whether direct or indirect.

 INSTALLER: THESE INSTRUCTIONS ARE TO REMAIN

WITH THE HOME OWNER!

CONGRATULATIONS ON THE PURCHASE OF YOUR NEW
GAS APPLIANCE MANUFACTURED BY LENNOX HEARTH
PRODUCTS.

When you purchased your new gas fireplace, you joined the ranks of
thousands of individuals whose answer to their home heating needs
reflects their concern for efficiency and our environment. We extend
our continued support to help you achieve the maximum benefit and
enjoyment available from your new gas fireplace. It is our goal at Lennox
Hearth Products to provide you, our valued customer, with an appliance
that will ensure years of trouble-free warmth and pleasure.

Thank you for selecting a Lennox Hearth Products gas fireplace as the
answer to your supplemental home heating needs.

Sincerely, All of us at Lennox Hearth Products

TABLE OF CONTENTS

Cautions and Safety ........................................................ 2

Orifice Size/Altitude Adjustment .......................................... 4

Codes and Approvals ....................................................... 5

New York City, New York (MEA) .......................................... 5

Commonwealth of Massachusetts Requirements ...................... 5

Pre-Installation............................................................ 6-7

Features ............................................................

Venting ..............................................................

Fuel

Packaging List .....................................................

Specifications ......................................................

Preparing your Fireplace for Installation .........................

Clearances to Combustibles .....................................

Installation ............................................................... 8-13

Framing Dimensions .............................................

Fireplace Dimensions ............................................

Raised Installations .............................................

Hearth Extension Considerations ..............................

Facing Installation Considerations ............................

Face Installation .................................................

Vent Installation ....................................................... 14-20

Application ........................................................

Vent Parts List ....................................................

Vent Considerations .............................................

Horizontal Vent Installation .....................................

Vertical Vent Installation ........................................

Flue Restrictors ..................................................

.................................................................. 6

6

6

6

6

7

7

8

9

10

10

11

13

14

15

16

17

17

18

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

Horizontal Terminations .........................................

Vertical Terminations ............................................

Horizontal Vent Termination Clearances ..................... 20

Brick Panel and Log Set Installation .................................... 21

Electrical Connections .................................................... 22

Gas Line Installation ......................................................23

Gas Pressure Requirements .................................... 23

LP and Natural Gas Supplies ................................... 23

Increasing Efficiency And Hot Air Movement ..........................24

Forced Air Heating Installation ......................................25-28

Operating Instructions ................................................ 29-32

Pre-Lighting Checklist ........................................... 29

Lighting Instructions ............................................. 29

Flame Color and Behavior ......................................

Air Shutter Adjustment ..........................................

Paint Curing .......................................................

Quiet Operation ...................................................

Blower Operation .................................................

Optional Wall Thermostat .......................................

Operating Options ................................................ 32

Millivolt Control System ........................................ 32

Maintenance and Servicing ..........................................33-34

Maintenance Checklist ..........................................

Vent Pipe Maintenance ..........................................

Opening and Removing Door ...................................

Glass/Door Maintenance ........................................

Blower Removal ..................................................

Fuel Conversion ..................................................

Troubleshooting ............................................................ 35

Replacement Parts ........................................................ 36

Accessories ............................................................. 36-37

Fireplace Labels .......................................................38-39

Product Reference Information .......................................... 40

18

19

19

30

31

31

31

31

31

33

33

34

34

34

34

USING THIS MANUAL

Please read and carefully follow all of the instructions found in this
manual. Please pay special attention to the safety instructions provided
in this manual.

PRODUCT IS SUBJECT TO CHANGE WITHOUT NOTICE

3

ORIFICE SIZE/ALTITUDE ADJUSTMENT

For altitudes above 2,000 feet (In Canada 4,500 FT/1370 M),the orifice
should be de-rated by 4% for every 1,000 feet to maintain the proper
ratio of gas to air. Improper orifice sizing may result in damage and
unsafe conditions. Changing the orifice should only be done by a quali
fied service technician. Contact your Lennox Hearth Products dealer for
proper orifice sizes.

SMOKE DETECTORS

Since there are always several potential sources of fire in any home, we
recommend installing smoke detectors. If possible, install the smoke
detector in a hallway adjacent to the room (to reduce the possibility of
occasional false activation from the heat produced by the appliance). If
your local code requires a smoke detector be installed within the same
room, you must follow the requirements of your local code. Check with
your local building department for requirements in your area.

THE RAVELLE™ 42 FIREPLACE

• Must conform with all local, state and national installation codes.
In the absence of local codes, the installation must conform with

-

National Fuel Gas Code ANSI Z223.1 - latest edition, also known
as NFPA 54 (In Canada, the current CAN/CSA B149.1 installation
code). Refer to the National Fuel Gas Code and local zoning and
code authorities for details on installation requirements.

• Mobile home installations must conform with the Mobile Home
Construction and Safety Standard, Title 24 CFR, Part 3280 (in Canada
CAN/CSA Z240 MH), or, when such a standard is not applicable,
the Standard for Mobile Home Installations, ANSI A225.1 - latest
edition.

• Must be vented directly to the outside in accordance with the latest
edition of the National Fuel Gas Code and must never be attached
to a chimney serving a separate solid fuel burning appliance.

• Has been certified for use with either natural gas or propane.

• Is not for use with solid fuels.

• Is approved for sitting rooms and/or bedrooms.

4

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

CODES AND APPROVALS

COMMONWEALTH OF MASSACHUSETTS REQUIREMENTS

Certification

Gas appliances must be tested and certified by a nationally recognized
testing and certification laboratory to ANSI (American National Standard
Institute) gas appliance safety standards.

This fireplace has been tested and certified by OMNI -Test Laboratories to
ANSI Z21.88/CSA 2.33 Standard for Vented Gas Fireplace Heater and CGA

2.17-M91 and UL 307B Gas Burning Heating Appliances for Manufactured
(Mobile) Homes in both USA and Canada.

It has met all necessary ANSI Standards and is fully certified for installa
tion in any community. If there are any questions or if you need further
substantiation either write to or call your Lennox Hearth Products dealer.
If you have further questions, please contact Lennox Hearth Products.

Check all local building and safety codes before installation. The installation
instructions and appropriate code requirements must be followed exactly
and without compromise. In the absence of local codes the following
standards and codes must be followed.

NEW YORK CITY, NEW YORK (MEA)

(Massachusetts Approval #G3-1104-102)

These fireplaces are approved for installation in the US state of Mas
sachusetts if the following additional requirements are met:

• Install this appliance in accordance with Massachusetts Rules and

Regulations 248 C.M.R. Sec. 5.08 2(a) through 2(e).

• Installation and repair must be done by a plumber or gas fitter licensed

in the Commonwealth 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.

Massachusetts Horizontal Vent Requirements

In the Commonwealth of Massachusetts, horizontal terminations installed
less than seven (7) feet above the finished grade must comply with the
following additional requirements:

• A hard wired carbon monoxide detector with an alarm and battery
back-up must be installed on the floor level where the gas fireplace
is installed. The carbon monoxide detector must comply with NFPA
720, be ANSI/UL 2034 listed and be ISA certified.

-

(NYC MEA Approval #138-07-E)

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

• A metal or plastic identification plate must be permanently mounted to
the exterior of the building at a minimum height of eight (8) feet above
grade and be directly in line with the horizontal termination. The sign
must read, in print size no less than one-half (1/2) inch in size, GAS
VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

5

PRE-INSTALLATION

Features

Installation Options

Residential
Vented vertical and horizontal
Manufactured (mobile) home
Natural gas (NG) or propane (LP)
Bedrooms
Optional wall-mounted or remote thermostat
Ductable for greater heat distribution

Venting

This fireplace can be vented with Security™ Secure Vent™ pipe*. Coaxial
pipe diameters are 6-5/8” outer and 4” inner. The combustion air for this
fireplace is drawn from outside the house through the outer DV (direct
vent) pipe. Room air is not required for combustion.

When planning your installation, select the correct length of vent pipe
for your particular requirements. Determine the minimum clearance to
combustibles from the rear of the unit to the wall. It is also important
to note the thickness of the wall. Before cutting the vent hole through
the wall make sure that ALL vent and termination clearances (see Pages
18-20) will be met.

Electrical

The standard fan motor requires 120 Volts AC for operation. The fireplace
is not dependent on the fan or an outside electrical supply to operate.

Millivolt Valve

This fireplace is operated with a millivolt valve and therefore burns even
during a power outage.

Fuel

This fireplace comes from the factory equipped to burn natural gas at a
specified elevation. The fireplace can be converted to burn LP gas (liquid
propane) by changing the cassette (valve and pilot assembly) or installing a
conversion kit. Only Lennox Hearth Products conversion kits can be used to
convert from NG to LP or LP to NG. Contact your Lennox Hearth Products
dealer for details.

Specifications

Fireplace weight: 250 lbs
Pipe:Type - direct-vent
Recommended manufacturer*
Security™ Secure Vent™*
Diameter - 6-5/8”x 4” for vertical terminations
Diameter - 8”x 5” for horizontal terminations

Packaging List

The Ravelle™ 42 gas fireplace comes with the following parts:

1 Fireplace Body with Burner Cassette
1 Log Set
1 Bag of Ember Material
1 Installation and Operation Manual

Decorative Faces - One Required

Arch Inset
Classic Inset
Screen
Foundry™

Brick Liners - One Required

Standard Brick
Red Brick
Architectural Stone

Ductability (optional)

Forced Air Duct Kit
Whole Home Comfort
System

* Other approved chimney brand is Simpson Dura-Vent DV-GS.

RATINGS

Max/Min Input BTUh 0-2,000 Feet (0-610 M)u

Manifold Pressure (IN. WC)

Min. Inlet Pressure (IN. WC)

Maximum heat output BTUs/hour-steady state

P4 Efficiency

Orifice (DMS) 0-2,000 Feet (0-610 M)u

uUnit factory equipped for 0-2000 FT/0-610 M, In Canada 0-4500 FT/0-1370 M

vThe Steady State Efficiency numbers based on maximum vent configuration.

wTested to CSA P.4.1-02 “Testing Method for Measuring Annual Fireplace Efficiency.

Electrical Rating: 120 VAC, 60 HZ, Less Than 2 Amps

6

w

Model Ravelle 42

NATURAL GAS LP GAS

42,000 / 29,500 36,000 / 25,000

3.5 / 1.7 10 / 5.1

5 11

34,860 29,880

50.43% 53.47%

#30 #49

Preparing Your Ravelle™ 42 Fireplace For Installation

*

*

Installations in the shaded
area require five inches
clearance on top of pipe.

Fireplace side view
(drawing not to scale)

Base of Fireplace

Dimensions

Read all instructions before beginning your installation. If instructions
have not been read carefully, your installation could void your warranty
and may create a serious fire, health, or other safety hazard.

The Lennox Hearth Products warranty will be voided if one of the fol­lowing occurs:

• Installation of any damaged fireplace or vent system compo
nent.

• Unauthorized modification of the direct vent system.

• Installation other than as instructed by Lennox Hearth Products,
Security™, or Simpson Dura-Vent.

• Installation of any fireplace or vent system component not manu­factured or approved by Lennox Hearth Products, Security™ or
Simpson Dura-Vent.

When planning the installation for your Ravelle 42 gas fireplace, it’s
necessary to consider the following:

• Where the unit is to be installed

• The vent system configuration to be used

• Gas supply (NG or LP)

• Electrical wiring

• Framing and finishing

• Optional accessories

-

Clearances to Combustibles

Minimum clearances include any projections such as shelves, window
sills, mantels, spacers/standoffs or surfaces to combustible construction
etc. above the appliance. Paint or lacquer used to finish the mantel
must be heat resistant in order to avoid discoloration.

29-3/4”

w

35-1/2”

(902mm)

41”

(1041mm)

u

(756mm)

38-1/4”

(972mm)

47-3/4”

(1213mm)

v

43”

(1092mm)

Figure 1

uThe center of the access hole for the gas piping is located at the

left side of the fireplace 6-7/8” back from the front edge and 2-1/8”
up from the base of the unit.

vThe electrical access is located at the right lower rear of the fire-

place.

w These dimensions include the 3/4” stand-offs.

20-3/4”

(527mm)

w

Minimum clearances to combustible materials in inches:

Front corners to enclosure (from stand-offs) 0 (0mm)
Rear corners to enclosure (from stand-offs) 0 (0mm)
Top to header (from stand-offs) 0 (0mm)
Bottom of unit to floor 0 (0mm)
Edge of door glass to side wall and side trim 7-1/2 (191mm)
Back to enclosure (from stand-offs) 0 (0mm)

Mantel: The drawing at the lower right shows the minimum distances

from the base of the fireplace to combustible mantel and facing material.
Combustible materials may be placed above and within the shaded areas.
If your fireplace has an arched face, the combustible mantel facing mate­rial may curve with the arch of the face as long as a minimum distance
of 10” is maintained between the top of the face and the combustible
facing material.

Hearth Protection: Hearth protection in front of the Ravelle™ 42 gas

fireplace is not required. However, hearth protection is recommended
and will enhance the appearance of the fireplace.

Pipe Clearances: All installations using a vertical termination cap

must maintain 1” (25mm) clearance between the direct vent pipe and
combustibles. For horizontal terminations, when the top of the horizontal
run of pipe is less than 8 feet (2.4 M) above the base of the fireplace, 1”
(25mm) clearance on the sides and bottom and 5” (127 mm) on the top
of the pipe is required. For those horizontal runs at or above 8 feet, 1”
(25 mm) is required on the sides and bottom and 2” (51 mm) on the top
of the pipe. See Page 19 for allowable pipe configurations.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

(133mm)

Figure 2

Mantel and Facing Material (side view)

12”

(305mm)

(51mm)

5-1/4”

7-1/2”

(191mm)

49-5/8”

(1261mm)

47-5/8”

(1210mm)

41-5/8”

(1057mm)

2”

1-1/4”

(32mm)

7

C/L

INSTALLATION

Framing Dimensions

The dimensions given on this page are minimum framing distances neces­sary to maintain safe clearances between the Ravelle™ 42 gas fireplace
and combustible materials.

uIf the unit is to be vented horizontally with a 90º elbow right off the

top of the fireplace and directly through an exterior wall, then a hole
10-3/4” (273 mm) square with a center line 42-1/4” (1073 mm)
above the base of the fireplace will accommodate the wall thimble
and direct vent pipe.

vThe gas line should be routed to the left side of the unit. The access

hole in the fireplace for the gas line is 6-7/8” (175 mm) back from
the front edge and 2-1/8” (54 mm) up from the base of the unit. If
the gas line enters the unit from the right side the piping will need to
be disconnected to remove the fan.

If a wall-mounted on/off switch or thermostat is to be used, these

wires should be routed to the left front of the unit for access to the
fireplace. The wire should be fed through the gas line hole, along the
gas line, to the valve.

A 6” (152 mm) header may need to be notched to accommodate vertical
vent pipe. If the fireplace is going to be horizontally vented directly out
the back, do not place a stud in line with the wall thimble. If a hearth
extension greater than 1” (25 mm) thick is going to be used, the fire­place and the header must be raised accordingly. See Hearth Extension

Considerations for further details.

Insulation: The exterior walls adjacent to the fireplace should be

insulated like the rest of the house, but insulation should not be placed
around the fireplace or vent pipe.

Corner Installations: The dimensions on this page are minimum and

show the stand-offs on the rear corners of the fireplace up against the
corner walls.

u

48”

(1219mm)

v

wThe electrical power supply wiring should be routed to the right rear

of the unit.

Note: The fireplace may be placed directly on wood or non-combustible
flooring, but not on vinyl floor covering or carpet.

Framing Suggestions: The framing header above the front of the

fireplace should be as narrow front to back as allowable to give maximum
clearance to the direct vent pipe (i.e. don’t use a 6” (152 mm) thick header
when a 4” (102 mm) thick one is allowed).

Figure 3

44-1/2”

(1130mm)

44-1/2”

(1130mm)

21”

(533mm)

w

8

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

18-9/16

(471)

14

(356)

44-1/2

(1130)

51-1/4
(1302)

29-3/4

(756)

20-3/4

(527)

47-3/4

(1213)

35-1/2

(902)

2

(51)

34

(864)

41

(1041)

38-1/4

(972)

30

(762)

43

(1092)

30

(762)

3-1/2

(89)

9-1/2
(241)

10-3/4

(273)

72-1/2
(1842)

6-7/8
(175)

18-3/16

(462)

32-5/16

(821)

3-1/2

(89)

5

(127)

6-1/4
(159)

2-1/4

(57)

GAS INLET

ELECTRICAL
INLET

Fireplace Dimensions

Corner Installation
Framing Details

Inches (millimeters)

Figure 4

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

9

Base of Fireplace

One Inch Space

Fireplace

Face

Raised
Platform

Nailing
Plate

Raised Installations

Raised Platform
for Hearth Exten­sion and Fireplace

Hearth Extension Considerations

The fireplace may be raised by building a platform of sufficient strength to
support the fireplace and pipe. When building a raised hearth extension,
please see the note below regarding height of the fireplace in relation to
the thickness of the hearth extension material.

A hearth extension in front of the fireplace is not required; however, to
enhance the appearance of the Ravelle™ 42 gas fireplace, one is recom
mended. Note: There is a 1” (25 mm) space between the base of the
fireplace and the bottom of the decorative fireplace face. This space
will allow a 7/8” (22 mm) thick hearth extension (including backer board
if desired). Should a hearth extension thicker than 7/8” (22 mm) be
desired, the height of the fireplace must be raised the thickness of that
hearth extension less the 7/8” (22 mm). For example, if a 2-7/8” (73 mm)
thick cultured stone is to be placed on the floor to serve as the hearth
extension, then the fireplace must be raised 2” (51 mm) (possibly using
1/2” (13 mm) plywood over 2 x 4’s laid flat) to accommodate the 2-7/8”
(73 mm) stone. It is important to note that if the fireplace is raised then
it is necessary to raise the height of the header above the stand-offs
an equal amount. If you wish to install your fireplace without a hearth
extension you must remember to set your finished flooring height 1” (25
mm) higher than the bottom base of the fireplace or install the fireplace
1” (25mm) lower than the finished flooring materials for that room. This
will assure that no gap will exist between the room’s flooring and your
new fireplace decorative face after it is installed.

-

Raised Platform
for Hearth Extension
and Fireplace

Figure 5

Figure 6

10

Raised
Platform

Nailing
Plate

Figure 7

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Fireplace
Face

Base of Fireplace

One Inch Space

Facing Installation Considerations

Cement Board

3/8” Tile and 1/2” Cement
Board Behind Fireplace Face

Cement Board - a minimum
of five inches wide.

Sheetrock

1” Reveal

5” (127mm)

Minimum

Sheetrock

Non-combustible cement board (such as Wonderboard, Durock, or
Hardybacker) must extend 10” (254 mm) above the 1” (25 mm) top
reveal and a minimum of 3” (76 mm) from each side reveal (see Figure

8). This cement board may be 1/4” (6.3 mm) thick or greater, but would
normally be the thickness of the drywall - for example 1/2” (13 mm).
The cement board may be fastened by drywall screws.

Sheetrock

The screws should be driven through the cement board into the outer
metal skin of the fireplace. The sheetrock (drywall) is then butted up
to the cement board. The sheetrock above the fireplace should also be
fastened to the fireplace by driving screws into the outer metal skin of
the fireplace.

Facing Less Than 1” Thick: If the combined thickness of the facing

material (eg. 3/8” [9.5 mm] thick ceramic tile and 1/2” [13 mm] thick
cement board) is less than 1” (25mm), then the tile can be placed behind
the fireplace face (see below).

10” (254mm)

Minimum

Cement Board

3” (76mm)

Minimum

3/8” (9.5mm) Tile and 1/2” (12.7mm) Cement Board

Behind Fireplace Face

(25mm)

1” Reveal

Sheetrock

Figure 8

Cement Board - Minimum

of 3” (76mm) Wide

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

11

Facing Greater Than 1” (25mm) Thick:

Reveal Corner

Template

A

B

C

Expanded View of Reveal Corner

A

If the combined thickness of the facing material (eg. brick or cultured
stone) and concrete board is greater than 1”, then the facing material
must be placed around the face. A template (Arch #75098, Foundry™
#75035 and Louver #75101) should be used while installing the facing
material. Templates for the various faces may be purchased from your
Lennox Hearth Products dealer or a template may be made of plywood
using the dimensions listed on this page. If you choose to make a
template, 1/8” (3mm) must be added to each side and top dimension to
provide sufficient clearance so the face may be removed for access to
the firebox. Since the bottom of the fireplace face is 1” above the base
of the fireplace, 1” (25mm) must be added to the height of the template
if the template is to rest on the floor or platform on which the fireplace
is placed. It is extremely IMPORTANT that the template be centered left
to right on the glass door of the fireplace.

Traditional Face

41”

(1041mm)

30-5/8”

(778mm)

Figure 12

Adjustment prior to arched face installation:

The corners of the 1” (25mm) reveal around the fireplace opening need
to be adjusted prior to installing an arched face (see drawings below).
Remove screws A and loosen screw B. Rotate the corner downward
bending the metal at pivot point C until the holes from which screws A
were removed line up with the lower set of holes. Reinstall screws A and
tighten screw B. When finished, the corners should look like the corner
below at the far right.

Platform to raise fireplace to accommodate a
hearth extension greater than 1” in thickness.

Figure 9

The fireplace face dimensions are:

26-3/8”

(670mm)

Template

Arch Face

30-5/8”

(778mm)

41”

(1041mm)

51-1/2” R
(1308mm)

Figure 13

Figure 14

Reveal Corner

A

B

C

Expanded View of
Reveal Corner

A

Reveal Corner Adjusted

for Arch Face

Figure 10

12

Figure 15

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.