Lennox Hearth WS User Manual

INSTALLATION AND OPERATION MANUAL

US

Portland

TM

Catalytic Vent-Free

Wall-Mounted Gas Fireplaces

Wide Screen Models

X-FIRES-WS-NG and X-FIRES-WS-LP

P/N 506023-05 REV. A, 11/2008

Installer: Leave This Manual With The Appliance.

Consumer: Retain This Manual For Future Reference.

I

n 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

X-Fires™ WS

Report No. 317-F-11-5

WARNINGS

• Hot! Do not touch! 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.

• Due to high temperatures, the appliance should be located out of traffic and away from furniture or
draperies.

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

• 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.

• Do not build a wood fire. Do not burn wood or other material in these appliances.

• This is an unvented gas log appliance. It uses air (oxygen) from the room in which it is installed. Provisions for adequate
combustion and ventilation air must be provided. Refer to Combustion and Ventilation Air Section in this manual.

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

• The 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.

• Lennox™ vent-free 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 switches; 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.

1.0 IMPORTANT SAFETY AND WARNING
INFORMATION

WARNINGS

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.

IMPORTANT

Read and understand these instructions completely
before installing or operating your unvented room
heater.

WARNING

Failure to keep the primary air opening(s) of the
burner(s) clean may result in sooting and property
damage.

WARNING

Failure to comply with the installation and operation
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

Do not allow fans to blow directly into the fireplace.
Avoid any drafts that alter burner flame patterns.

WARNING

Check gas type: The gas supply must be the same
as stated on the appliance’s rating plate. If the gas
supply is different DO NOT install the appliance.
Contact your dealer for the correct model.

WARNING

Do not use a blower insert, heat exchanger insert
or other accessory not approved for use with this
heater.

WARNING

Due to the nature of this product the area around the
top of the appliance (i.e. the grill) gets very hot. Care
should be taken when operating the appliance.

2

• Children and adults should be alerted to the hazard 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 with the heater.

• Do not place clothing or other flammable material on or near
the heater.

• Any safety screen or guard removed for servicing the heater
must be replaced prior to operating the heater.

• Installation and repair should be done by a qualified service
person. The heater should be inspected before use and at
least annually by a professional service person. More fre­quent cleaning may be required due to excessive lint from
carpeting, bedding material, etc. It is important that control
compartments, burners and circulating air passageways of
the heater be kept clean.

• Allow the heater to cool before servicing. Always shut off the
gas to the heater while performing service work.

• The installation must conform with local codes or, in the
absence of local codes with the National Fuel Gas Code,
ANSI Z223.1/NFPA 54-latest edition.

• The heater and its individual shut-off valve must be discon
nected from the gas supply piping system while performing
any tests of the gas supply piping system at pressures in
excess of 1/2 psig.

• The heater must be isolated from the gas supply piping
system by closing its individual manual shut-off valve during
any pressure testing of the gas supply piping system at test
pressures equal to or less than 1/2 psig.

• Keep heater area clear and free from combustible materials,
gasoline and other flammable vapors and liquids.

• Do not use this heater if any part has been under water.
Immediately call a qualified service technician to inspect the
room heater and to replace any part of the control system
and any gas control which has been under water.

• Input ratings are shown in BTU per hour and are for elevations
up to 4,500 feet. Do not install this heater at an elevation
above 4,500 feet if the gas supply has not been derated for
that elevation. Consult your local gas supplier. (For operation
at elevations above 4,500 feet, equipment ratings shall be
reduced at the rate of 4 percent for each 1,000 feet above
4,500 feet before selecting appropriately sized equipment).
When installing any vent-free appliance at elevations above
4500 feet, nuisance pilot outages may occur.

• Ensure that the heater is clean when operating. Excessive
dust accumulation on the burner will increase the amount
of carbon monoxide formation and could lead to carbon
monoxide poisoning and/or death.

• This appliance is intended for supplemental heating. If the
appliance is used in a room as the sole source of heat, then
condensation may occur on colder surfaces within the room.

• Carbon monoxide poisoning – early signs of carbon monox­ide poisoning resemble the flu with headaches, dizziness,
or nausea. If you have these signs, get fresh air at once!
Turn off the gas supply to the appliance and have the heater
inspected by a qualified service technician. 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.

• Maintain minimum clearances.

• Do not install the appliance in a sleeping room or bath­room.

• Do not place any objects on top of the appliance.

-

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

Section Contents Page No.

1.0 Safety And Warning Information

2.0 General Information

3.0 Packaging List

4.0 Appliance Specifications

5.0 Unpacking the Appliance

6.0 Burn-in Period

. . . . . . . . . . . . . . . . . . . . . . . 3

. . . . . . . . . . . . . . . . . . . . . . . . . . . 3

. . . . . . . . . . . . . . . . . . . 3

. . . . . . . . . . . . . . . . . . . 4

. . . . . . . . . . . . . . . . . . . . . . . . . . . 4

7.0 Codes, Massachusetts & New York

8.0 Combustion And Ventilation Air

9.0 Site Requirements

10.0 Gas Supply Routes

11.0 Preparing The Appliance

12.0 Mounting The Appliance

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

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

. . . . . . . . . . . . . . . . . . . 7

. . . . . . . . . . . . . . . . . . . 8

13.0 Fitting the Surround Assembly

14.0 Checking The Burner

15.0 Connecting A Gas Line

. . . . . . . . . . . . . . . . . . . . . . 10

. . . . . . . . . . . . . . . . . . . . 10

16.0 Checking The Gas Connections

17.0 Gas Pressure Check

18.0 Spark Gap

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

19.0 Briefing The Customer

20.0 Servicing

21.0 Catalysts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

. . . . . . . . . . . . . . . . . . . . . . . 11

. . . . . . . . . . . . . . . . . . . . . 12

22.0 Testing For Firebox Leakage

23.0 Lighting Instructions & Turning Off Appliance

24.0 Troubleshooting Guide

25.0 Replacement Parts List

. . . . . . . . . . . . . . . . . . . . . 16

. . . . . . . . . . . . . . . . . . . . 17

26.0 Positioning of Field Assembled Parts

27.0 Specifications

. . . . . . . . . . . . . . . . . . . . . . . . . . . 19

28.0 Product Reference Information

2.0 GENERAL INFORMATION

This appliance is a high efficiency, unvented, flame effect gas heater.
It provides radiant and convected warmth both efficiently and safely
utilizing the latest type catalytic convertor burner technology. The
appliance does not require a flue system of any type as the catalytic
converter cleans the flue products to provide a complete combustion
system, which is intrinsically safe.

. . . . . . . . . . . . . 2

. . . . . . . . . . . 4

. . . . . . . . . . . . . . 5

. . . . . . . . . . . . . . 9

. . . . . . . . . . . . . . 11

. . . . . . . . . . . . . . . . 14

. . . 15

. . . . . . . . . 18

. . . . . . . . . . . . . . 20

These heaters are fitted with a specially designed pilot utilizing an
oxygen depletion sensor (ODS) which responds to the amount of
oxygen available in the room and shuts the heater off before the
oxygen level drops below 18%. It must not be adjusted or put out
of operation. If replaced then manufacturers original parts must be
used. The pilot can be relit only when fresh air is available. Refer to
the Combustion and Ventilation Air section.

The appliance is designed to fit various types of situations as listed
in the installation requirements.

This appliance is factory set for operation on the gas type, and at the
pressure stated on the appliance rating plate.

Read all these instructions before commencing installation. All instruc­tions must be left in the possession of the user for safekeeping.

3.0 PACKAGING LIST

Quantity Description

Fireplace

1 Firebox, burner assembly and outer case (wrap)
1 Installation and Operation Manual
1 Warranty Certificate
1 Screw and wall plug pack
1 Rubber grommet

Surround Assembly

(required - sold separately. see Page 19 for ordering information)

1 Surround Assembly
1 Installation Instruction Sheet

4.0 APPLIANCE SPECIFICATIONS

X-Fires Wide Screen

Gas Type Natural Gas Propane Gas

Gas inlet pressure Max.

Min.

Regulator Pressure Setting 5” w.c. 10” w.c.

Max Energy Input 11,950 BTU/hour 10,235 BTU/hour

Min Energy Input 6,820 BTU/hour 6,820 BTU/hour

Pilot Energy Input 560 BTU/hour 560 BTU/hour

Burner Pressure High
(Manifold) Low

Main burner flow restrictor
(burner orifice)

Oxypilot SIT/Bray 9082 SIT/Bray 9284

Gas Inlet Connection 3/8” NPT at regulator 3/8” NPT at regulator

Ignition Piezo spark Piezo spark

Spark Gap 1/8” - 3/16” 1/8” - 3/16”

Please see Data Plate affixed to appliance for current data. This appliance is for use
only with the gas type, and at the pressure stated on the appliance Data Plate.

Table 1

10.5” w.c.
6” w.c.

2.4” w.c.

0.8” w.c.

2.0 mm (0.079”) 1.45mm (0.057”)

13” w.c.
11” w.c.

5.5” w.c.

2.4” w.c.

3

5.0 UNPACKING THE APPLIANCE

Remove the straps and the top lid of the outer packaging, remove any
instructions or fixing kits. Read ALL these instructions before continuing
to unpack or install this appliance.

Lift off the remaining packaging components.

Check that the components supplied with the packaging list on Page

3. Please dispose of all the packaging materials at your local recycling
center.

Massachusetts Requirements

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

• Unvented Room Heaters shall be installed in accordance with 527
CMR 30.00 and 248 CMR 3.00 through 7.00:

• 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.

6.0 BURN-IN PERIOD

On initial light up of a new appliance, the ‘newness’ will burn off within
the first few hours of operation. During this period some smoke may be
emitted from outlet grill, this should be no cause for concern. Accord­ingly, the room should be well ventilated with all windows and doors
open during this period.

Depending on your use, the burn-in period may take a few hours or a few
days. Also if you have a sensitive sense of smell you may notice slight
odors during operating after the burn-in period is over.

KEEP YOUR HOUSE WELL VENTILATED DURING THE BURN-IN PERIOD.
THE ODOR AND HAZE EMITTED DURING THE BURN-IN PERIOD CAN BE
QUITE NOTICEABLE AND MAY SET OFF A SMOKE DETECTOR. MAKE
SURE SMOKE DETECTORS ARE NOT TOO CLOSE TO THE FIREBOX
(CHECK WITH YOUR LOCAL CODE FOR ALLOWABLE DISTANCES).

7.0 CODES

Adhere to all local codes or in their absence the latest edition of The
National Fuel Gas Code ANSI Z223.1 / NFPA 54 - latest edition which can
be obtained from The American National Standards Institute, Inc. (1430
Broadway, New York, NY, 10018) or National Fire Protection Association,
Inc. (Batterymarch Park, Quincy, MA, 02269).

• Vent-Free appliances may NOT be installed in bedrooms or bath
rooms.

• A working smoke detector must be installed in the area where vent­free appliances are installed.

Seller of unvented propane or natural gas-fired supplemental room
heaters shall provide to each purchaser a copy of 527 CMR 30 upon
sale of the unit.

New York:

These fireplaces are approved for installation in the US state of New York,
but not in New York City.

-

Seller of unvented propane or natural gas fired supplemental room
heaters in the Commonwealth of Massachusetts shall provide to each
purchaser a copy of 527 CMR 30 upon sale of the unit.

This Lennox Hearth Products Unvented Gas Room Heater is certified by
OMNI-Test Laboratories, Inc to ANSI Z21.11.2 standard.

4

8.0 COMBUSTION AND VENTILATION AIR

This heater shall not be installed in a confined space or unusually tight
construction unless provisions are provided for adequate combustion and
ventilation air. The heater may be located in unusually tight construction
provided the space is unconfined, or if confined, is provided with two
permanent openings communicating directly with an additional room(s)
of sufficient volume so that the combined volume of all connected spaces
meets the criteria for an unconfined space, (National Fuel Gas Code
NFPA 54 / ANSI Z223.1 - latest edition, Section on Air for Combustion
and Ventilation. Generally 50 ft3 per 1,000 BTU input of all operating
appliances in the space.

The National Fuel Gas Code, ANSI Z223.1/NFPA 54, defines a confined
space as a space whose volume is less than 50 ft3 per 1,000 BTU/Hr
(4.8 m3 per kW) of the aggregate input rating of all appliances installed
in that space and an unconfined space as a space whose volume is not
less than 50 ft3 per 1,000 BTU/Hr (4.8 m3 per kW) of the aggregate input
rating of all appliances installed in that space.

Rooms communicating directly with the space in which the appliances
are installed, through openings not furnished with doors, are considered
a part of the unconfined space.

Unusually tight construction is defined as construction where:

a. Wall and ceilings exposed to the outside atmosphere have a continu

ous water vapor retarder with a rating of one perm (6 X 10-11 kg per
pa-sec-m2) or less with openings gasketed or sealed;

b. Weather stripping has been added on operable windows and doors;

and

c. Caulking or sealants are applied to areas such as joints around window

and door frames, between sole plates and floors, between wall ceiling
joints, between wall panels, at penetrations for plumbing, electrical,
and gas lines, and at other openings.

Use the following equations to determine if you have a confined or
unconfined space.

Example:

Vent-free heater #1 9,000 BTU/Hr

Vent-free heater #2 23,000 BTU/Hr
Gas appliance #1 35,000 BTU/Hr
(water heater)
Total = 67,000 BTU/Hr

* Do not include direct-vent gas appliances. Direct-vent is sealed com

bustion and draws combustion air from the outdoors.

4. Compare the maximum BTU/Hr the space can support with the actual
amount of BTU/Hr used.

_______ BTU/Hr (max. the space can support)
_______ BTU/Hr (actual amount of BTU/Hr used)

Example:
61,440 BTU/Hr (max. the space can support)
67,000 BTU/Hr (actual amount of BTU/Hr used)

The space in the previous example is a confined space because the
actual BTU/Hr used is more than the maximum BTU/Hr the space can
support. You must provide additional fresh air.

Your options are:
a. Rework equations adding the space of adjoining room(s). If the extra

volume provides an unconfined space, then remove door or add
ventilation grills between rooms. Refer to National Fuel Gas Code,

-

ANSI Z223.1/NFPA 54-latest edition, Section "Air for Combustion and
Ventilation".

b. Vent room directly to the outdoors. Refer to National Fuel Gas Code,

ANSI Z223.1/NFPA 54-latest edition, Section "Air for Combustion and
Ventilation".

c. Install a lower BTU/Hr heater to make the area an unconfined space.

If the actual BTU/Hr used is less than the maximum BTU/Hr the space
can support, then the space is an unconfined space. You will need no
additional fresh air ventilation for an unconfined space.

-

3

3

)/ 50 ft3 =

3

.

3

1. Determine the volume of space — ft

Length x Width x Height = _____ ft
(Include adjoining rooms with doorless passageways or ventilation

grills between rooms).

Example:

2. Divide the volume of space by 50 ft3 to determine the maximum BTU/Hr

the space can support.

______ (volume of space – ft
(Maximum BTU/Hr the space can support)

Example:

or 61,440 BTU/Hr the space can support.

3.

Add the BTU/Hr of all the fuel burning appliances in the space.

Vent-Free heater _______ BTU/Hr
Gas appliance #1* _______ BTU/Hr
Gas appliance #2 + _______ BTU/Hr
Gas appliance #3 + _______ BTU/Hr
Total = _______ BTU/Hr

24' (L) x 16' (W) x 8' (H) = 3072 ft

3072 ft3 / 50 ft3 = 61.44

WARNING

If the area in which the heater may be operated is
smaller than that defined as an unconfined space or
if the building is of unusually tight construction,
provide adequate combustion and ventilation air by
one of the methods described in the national fuel
gas code, ANSI Z223.1/NFPA 54, Air for Combustion
and Ventilation Or applicable local codes.

5

9.0 SITE REQUIREMENTS

This appliance is designed to be wall-hung. Do not recess any part of
the appliance into the wall.

This appliance may be installed in any room in a home except bedrooms
or bathrooms - or areas where large amounts of steam are likely to be
generated.

It should be noted that heaters create warm air currents. These currents
move heat to wall surfaces next to the heater. Installing the heater next
to vinyl or cloth wall coverings or operating the heater where impuri­ties in the air (such as tobacco smoke or candle smoke) exist, may
discolor walls.

CLEARANCES TO COMBUSTIBLE MATERIALS

Combustible materials are defined as wood, fabrics, or other materials
likely to combust if exposed to flame. Generally, any material, which is
likely to discolor, melt or misshape when exposed to moderate heat,
should be considered as a combustible material or surface.

Clearance to the sides of the appliance are 4” but curtains, drapes and
other fabrics are not permitted within a distance of 20” of the appliance
sides. No such materials are permitted directly above the appliance
regardless of distance.

The minimum clearance to the ceiling above the appliance is 32” mea­sured from the top of the appliance glass panel.

Installation in living rooms is common, however other rooms such as
kitchens, dining rooms and hallways are permitted, providing a suitable
gas supply is available, and rooms sizing and ventilation requirements
are strictly adhered to (see Section 8.0).

The appliance is designed to be versatile, and as such will operate correctly
when exposed to normal gentle drafts experienced within the home. It is
not recommended, however that the appliance be installed in areas where
it is likely to be exposed to persistent strong drafts, that may be generated
by outside doors or windows, air vents etc. It is recommended that the
appliance should not be installed within 20" of any air vent.

CAUTION

The back of the appliance may be installed directly
onto a combustible wall or non-combustible wall,
providing the area behind the appliance is flat and
does not interfere with the various vent holes in the
back panel of the appliance.

CLEARANCES TO NON-COMBUSTIBLES

Non-combustible surfaces are defined as brick, metal, marble, concrete
etc. and also a number of man-made materials impervious to flame. If in
doubt refer to the material manufacturer for further information before
proceeding with installation.

Combustible materials should not be positioned directly in front of the
appliance within a distance of 40”.

Under no circumstances should any electrical equipment e.g. plasma
screen TV sets etc. be positioned on the wall above the appliance. The
appliance is designed to be wall mounted alone and not in conjunction
with any type of combustible fire surround.

No combustible shelves should be positioned on the wall above the
appliance.

It should be established that any mirrors or picture frames etc. to
be positioned on the wall above the appliance are able to withstand
prolonged exposure to moderate heat and moisture before proceeding
with their installation.

The wall must be structurally sound and constructed from a material
capable of withstanding moderate heat. Finished plaster, conventional
wall paper and dry-lined plasterboard are examples of suitable materi­als. Materials such as flock, blown vinyl and embossed paper which are
sensitive to even small amounts of heat should be avoided as scorching
and or discoloration may occur over time.

If the appliance is to be mounted on a dry-lined wall or a timber framed
construction wall then the integrity and ability of the wall to carry the
weight of the appliance must be confirmed. It is important in these
circumstances that any vapor control barrier is not damaged, and that
any structural members of the house frame are not damaged.

Clearances to the sides of the appliance are 4”. Clearance to the front
of the appliance is 20”.

The appliance may be installed with or without a non-combustible hearth.
If a hearth is fitted, the size and design may be as desired.

A non-combustible shelf of any depth may be positioned above the appli­ance provided it is no closer than 16” from the top of the appliance glass
panel and the wall above the appliance is non-combustible.

6

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE

The appliance may be positioned as close to a solid floor (i.e. stone,
wooden laminate etc.) as the particular design of fire frame permits,
however it is not permitted to install the appliance within 4” of carpet,
rugs or fabric materials of any kind. This dimension is measured verti­cally to the bottom of the appliance frame.