Lennox MP-42OD User Manual 2

HOMEOWNER'S CARE AND OPERATION INSTRUCTIONS

MP-42OD

MERIT

36" and 42" Indoor / Outdoor Wood Burning Fireplaces P/N 875,029M REV. A 01/2006

PLUS SERIES

MODELS

MP-36OD

The information contained in this manual applies to all model ﬁ replaces identiﬁ ed on this page. This information will help you obtain safe and dependable service from your Lennox ﬁ replace system. Keep this document in a safe place for future reference.

Before you start your ﬁ rst ﬁ re, read this Care and Operations Manual carefully to be sure you understand your ﬁ replace system completely. Failure to follow these suggestions could result in hazardous operation or ﬁ replace malfunction, creating a serious potential for personal injury and/or property damage.

MP-42OD

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

VEUILLEZ GARDER CE MANUEL

POUR RÉFÉRENCE FUTURE.

OTL Report No. (MP-36OD) #116-F-35-2 (MP-42OD) #116-F-37-2

MP-36OD

If you have any questions regarding the safe use or operation of your ﬁ replace, contact your local Lennox distributor, or your contractor / builder.

A French manual is available upon request. Order P/N 875,029CF

Ce manuel d’installation est disponible en francais, simplement en faire la demande. Numéro de la pièce 875,029CF.

WARNING: EXERCISE CAUTION WHEN OPERATING IF INSTALLED OUTDOORS. DO NOT BURN LARGE FIRES. ATMOSPHERIC CHANGES MAY CAUSE UNEXPECTED GUSTS OF WIND. FLAMES AND ASHES MAY BE BLOWN OUT OF THE FIREPLACE. KEEP THE SCREEN CURTAINS CLOSED AT ALL TIMES AFTER FEEDING THE FIRE.

AVERTISSEMENT: EXERCISE GUARANTEE WHEN OPERATING IF THIS APPLIANCE IS INSTALLED OUTDOORS. BROAD C NOT BURN FIRES. ATMOSPHERIC EXCHANGES MAY CAUSES UNEXPECTED GUSTS OF WIND. FLAMES AND ASHES MAY BE BLOWN OUT OF THE FIREPLACE. KEEP THE SCREEN CURTAINS CLOSED AT ALL.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

CONGRATULATIONS!

In selecting this LENNOX Wood Burning Appliance you have chosen the ﬁ nest and most dependable ﬁ replace to be found anywhere. Its a beautiful, prestigious alternative to a masonry wood burning ﬁ replace. Welcome to a Family of tens of thousands of satisﬁ ed LENNOX Fireplace Owners.

Please carefully read and follow all of the instructions found in this manual. Please pay special attention to the safety instructions provided in this manual. The Homeowner's Care and Operation Instructions included here will assure that you have many years of dependable and enjoyable service from your LENNOX product.

TABLE OF CONTENTS

General Safety Precautions .................Page 2

General Information ............................Page 2

Fuels ...................................................Page 3

Gas Logs .............................................Page 3

Wood Fuel Pointers .............................Page 3

Disposal of Ashes ...............................Page 4

Softwood vs Hardwood .......................Page 4

Starting a Fire ......................................Page 4

Damper Control ...................................Page 5

Glass Door Operating Safety

Precautions and Instructions ............Page 4

Combustion Air Inlet ...........................Page 5

Maintenance Guidelines ......................Page 6

Refractories ........................................Page 8

Twice a Year Check-Up ........................Page 7

Creosote Formation and Removal .......Page 8

Troubleshooting ..................................Page 9

Warranty .............................................Page 10

Product Reference Information ...........Page 10

Accessory Components ......................Page 10

Replacement Parts ..............................Page 11

IMPORTANT! GENERAL SAFETY PRECAUTIONS. READ AND UNDERSTAND THESE SAFETY RULES BEFORE YOUR FIRST FIRE.

WARNING

To avoid the risk of damaging ﬁ replace materials and increasing the risk of ﬁ re, do not use the ﬁ replace to cook or warm food.

AVERTISSEMENT

Pour éviter le risque d’endommager les matériaux du foyer et d’augmenter le risque d’incendie, n’employez pas le foyer pour faire cuire ou réchauffer de la nourriture.

NEVER LEAVE CHILDREN UNATTENDED WHEN THERE IS A FIRE BURNING IN THE FIREPLACE.

2. When burning wood, use SOLID NATURAL DRY WELL-SEASONED WOOD ONLY. Hard-

woods are recommended (soft woods tend to burn very quickly).

• DO NOT burn treated wood, charcoal, coal, trash, driftwood, woods dipped in tar, Christmas tree greens, pitch, pine tar, creosote, chemical chimney cleaners, ﬂ ame colorants, polystyrene packaging, wood products with synthetic binders (i.e. plywood). Plywood, lumber and other misc. materials can produce abnormally high temperatures, sputtering and smoking ﬁ res and may contain hazardous chemicals to treat insects and fungus.

• When using newspapers to start a wood ﬁ re, remove (and do not burn) the colored comic or ad sections. The colored inks contain lead and can produce toxic gases.

• If Artiﬁ cial Logs are burned it is required that the logs are UL safety listed (see labeling or documention provided with logs). Read and follow the log manufacturer's instructions. Do not treat artiﬁ cial logs (made from sawdust and wax) the same way you treat real natural wood logs. Use only one at a time.

• IMPORTANT: Burning unapproved fuels can produce excessive temperatures, beyond the design capabilities of the ﬁ replace and may produce excess sparks or may contain hazardous chemicals. Burning unapproved

fuels can result in a chimney ﬁ re, a house ﬁ re, personal injury, death or loss of property.

3. NEVER use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter ﬂ uid, NAPHTHA, ENGINE OIL or similar liquids to start or “freshen up” a ﬁ re in this ﬁ replace. Keep any ﬂ ammable liquids a safe distance from the ﬁ replace.

4. Keep the chimney damper open while any ﬁ re or smoldering embers are present .

5. Use care when selecting window treatments for windows located near the ﬁ replace. Avoid using combustible ﬂ owing window treatments such as curtains on nearby windows that are of sufﬁ cient length to be blown in front of an open ﬂ ame when the window is opened.

6. With the ﬁ re burning, close the protective mesh screens to keep sparks and embers INSIDE the ﬁ rebox. Closed screens prevent ﬁ re, sparks and embers from popping out of the ﬁ rebox while a ﬁ re is burning. Pull screens back when adding wood to the ﬁ rebox.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

7. Keep any combustible furniture or decorative pillows at least 60" (1524 mm) from the ﬁ replace opening.

8. Never leave your ﬁ replace unattended while it is burning.

9. Be careful adding wood fuel to the ﬁ re or handling ﬁ replace tools such as shovels, tongs or pokers.

10. Never modify or alter your ﬁ replace system in any way. To do so may create a potential ﬁ re hazard and void the Limited Warranty.

11. The bottom refractory can be cracked by excessive abuse such as tossing heavy logs onto the grate or gouging with ﬁ replace tools. Exercise caution when adding wood to your ﬁ replace.

12. Fireplace Inserts - Contact your dealer or distributor for a list of Lennox ﬁ replace inserts approved for installation into your ﬁ replace. DO NOT install a ﬁ replace insert from any another manufacturer.

13. If you are using your ﬁ replace as a “decorative appliance,” such as with a permanently installed gas log set, the ﬁ replace damper must be permanently ﬁ xed in the open position. Listed “vent-free” gas log sets may be used with the damper closed.

14. If this unit is installed indoors, always ensure that an adequate supply of replacement combustion air from the outside of the house is accessible to the ﬁ re 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 efﬁ cient features, the optional 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 ﬁ replace.

15. Neither the manufacturer nor the seller warrants “smoke free” operation nor are we responsible for inadequate system draft caused by mechanical systems, general construction conditions, inadequate chimney heights, adverse wind conditions and/or unusual environmental factors or conditions beyond our control.

16.Always ensure that the air inlet to the ﬁ replace is free from debris and any other obstructions that can block the entrance of air.

GENERAL INFORMATION

1. The all-steel, multi-wall ﬁ rebox is the heat center of the system. It is well insulated for safe clearance to combustibles.

2. The hearth ﬂ oor and sidewalls of the ﬁ rebox are lined with a brick pattern reinforced refractory for the look of authenticity and

to provide safety.

3. The metal chimney sections extending from the ﬁ rebox top to beyond your roof are two walled and air-cooled. The inner passage, or ﬂ ue, provides the exit for smoke and gases.

4. The ﬂ ue damper is a two position (fully open or fully closed) mechanism operated by a handle found at the center top of the ﬁ replace opening. It must be open when ﬁ re is present so smoke and gases can escape. It should be closed only when the ﬁ re is completely out – keeping room air from being lost up the ﬂ ue.

5. Closed screens prevent ﬁ re, sparks and embers from popping out of the ﬁ rebox while a ﬁ re is burning. Pull screens back when adding wood to the ﬁ rebox.

6. Why use a fuel grate? Besides positioning the ﬁ rebed properly, it protects the refractory ﬂ oor, back and sides of the ﬁ replace. Further, it ensures a proper ﬂ ow of combustion air into and around the ﬁ rebed. The grate must be used at all times when burning. Your warranty may be voided without the use of this grate.

7. This ﬁ replace is not a heater. It is designed to ensure homeowner comfort by providing supplemental heat to its immediate area.

FUELS

Never Use Coal in Your Fireplace

Your ﬁ replace system is not designed to be used with coal derivative products. The combustion process of certain types of coal can deposit corrosive materials in the ﬁ replace and chimney system which can lead to premature product failure. Never use coal as a fuel in this ﬁ replace system.

Gas Logs

If your ﬁ replace system was installed with a gas line, you may wish to install one of two types of gas log sets.

This ﬁ replace has been tested and approved for use with a decorative gas appliance incorporating an automatic shut-off device and complying with the Standard for Decorative Gas Appliances for installation in vented ﬁ replaces, ANSI Z21.60 (latest edition). Decorative gas appliances may be installed in these ﬁ replaces. Installation must be in accordance with the National Fuel Gas Code, ANSI Z223.1 for compliance with the revised U.L. 127 Standard.

CAUTION

When using a decorative gas appliance, the ﬁ replace damper must be set in the fully open position.

ATTENTION

Si vous utilisez un appareil décoratif au gaz, le registre de la cheminée du foyer doit être ouvert complètement.

WARNING

Unvented Gas Log Sets are not approved for use with ﬁ replaces installed outdoors. The materials and components will deteriorate prematurely if installed outside. Refer to the log manufacturer’s literature for limitations and exceptions.

AVERTISSEMENT

Les ensembles de bûches à gaz sans conduit d’évacuation ne sont pas approuves pour l’usage avec des foyers installes a l’exterieur. Les materiaux et les composantes se deterioreront prematurement si installees a l’exterieur. Referez-vous a la litterature du fabricant des buches pour les limites et les exceptions.

This ﬁ replace has been tested and approved to ANSI/IAS/AGA Z21.11.2 for use with an unvented gas appliance having a maximum rating of 26,000 BTU and complies with the Standard for Factory-Built Fireplaces, U.L. 127, when installed with unvented gas log sets. The limit may be increased to 40,000 BTU providing that minimum combustible mantel heights were increased to at least 18 inches when the ﬁ replace was installed.

Prior to installing any gas log set, (Vented or Unvented) refer to the ﬁ replace installation instructions for veriﬁ cation of mantel heights and placement of combustible materials around the ﬁ rebox opening.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

IMPORTANT

Never install an unvented gas log set with a BTU greater than 26,000 if combustible mantel projections are lower than 18 inches above the ﬁ replace opening.

ATTENTION

Ne jamais installer un ensemble de buches a gaz sans conduit d’evacuation qui genere une puissance superieure a 26000 si un manteau combustible est installe plus bas que 18 po. Au dessus de l’ouverture du foyer.

Vented gas log sets do not have restrictions placed upon their BTU rating.

Wood Fuel Pointers

Wood is a wonderful renewable fuel source. Normally it burns clean, leaving only a minimum of waste ash, provides comforting heat and can provide a variety of aromas and visual images.

You will want to know which woods are best for use. Sometimes you may want a quick, short ﬁ re to offset a morning chill. Soft woods are preferable in this case. Other times you would want more slow burning and a uniform heat output. Hardwoods are preferable for this use.

The amount of heat available from the logs will be about equal on a weight basis. However, logs are generally not weighed so the amount of heat will depend on:

1. The type of wood used.

2. How dry it is.

3. How many logs you put in.

4. The size of the logs.

The last statement means that one big log weighing 10 pounds has as much heating potential as 10 pounds of twigs. However, air cannot get at the solid log to feed the ﬁ re so the solid log will burn slowly. While you would get the same amount of heat out of either ﬁ re, the smaller the pieces of wood and the more air space around them, the faster the ﬁ re will burn.

DISPOSAL OF ASHES

Ashes should be placed in a metal container with a tight ﬁ tting lid. The closed container of ashes should be placed on a noncombustible ﬂ oor or on the ground, well away from all combustible materials, pending ﬁ nal disposal. If the ashes are to be disposed of by burial in soil or other wise locally dispersed, they should be retained in the closed container until all cinders have thoroughly cooled.

SOFTWOOD VS HARDWOOD

Softwoods contain about 15 percent highly ﬂ ammable resin which generates creosote soot in the chimney ﬂ ue. Burning softwood exclusively may not be as desirable nor as safe as burning denser hardwoods. Many experienced ﬁ re-builders use small amounts of softwood kindling and newspaper in conjunction with starting a ﬁ re with split hardwood logs. Here are some guidelines to remember:

1. Softwoods produce fast warming and shorter ﬁ res. Hardwoods burn less vigorously, have shorter ﬂ ames and produce steady, glowing coals.

2. As a general rule, denser woods contain more potential heat per pound. Most softwoods offer moderate heat value per pound.

3. Different woods vary widely in ﬂ ame heights, ﬂ ame intensities, smoke characteristics and in sparking. Most hardwoods do not spark.

4. Most freshly cut “green” wood will not burn well and will smoke. Green wood can be from 10 to 40 percent less efﬁ cient than air-dried seasoned wood.

5. Moisture and resin found inside unseasoned wood cells will build up pressure under heat and explode as sparks.

6. Most wood needs to be seasoned 9 to 12 months to reduce the moisture content and produce good steady ﬁ res. When moisture content is reduced from 60 to 20%, the gain in heat potential is nearly 7%.

7. Proper storage of wood, especially during seasoning, is essential. We recommend that you:

a. Never store wood on the ground. This

will cause rotting and insect inﬁ ltration. Raise wood on ﬂ at rock or scrap wood.

b. Stack wood loosely to allow air circula-

tion.

c. Store wood where it will not be exces-

sively exposed to weather, such as under a tarp or under a roof.

d. Do not stack wood directly against the

walls of your home.

8. Be a knowledgeable wood buyer. There is a difference in cord sizes. A standard cord stack of logs is 4 ft. high by 8 ft. long by 4 ft. deep or the equivalent of this cubic footage, (Figure 1).

Standard Cord of Wood

Figure 1

A face cord is the same height and length as a standard cord but the depth is only the length of the logs (12, 18 or 24 inches). A face cord can contain as little as 25% of the wood found in a standard cord.

If you buy by the ton, remember that wood becomes lighter as it dries. When buying green or wet wood, ask for some extra poundage to allow for the extra water you will be getting.

9. When comparing woods of the same moisture content and same species, we ﬁ nd most woods have approximately the same heating potential per pound.

However, most wood is sold by volume, not by weight. To determine the best heating source, look at the density of various wood types. (Density is the weight for a given size.) The higher the density, the more potential heat output. A standard cord has a volume of 128 cubic feet. This Figure also includes the air space between and around the wood. The actual volume in a standard cord is between 60 and 100 cubic feet; depending on how tightly the wood is packed.

Assuming that you are comparing two standard cords of different species but the same volume and moisture content, the denser species will provide more BTU’s. The table of wood species/ densities reveals more helpful guidelines.

HARDWOODS DENSITY

Alser, Red .41 Ash .49-.60 Aspen .38-.39 Basswood, American .37 Beech, American .64 Birch .55-.65 Butternut .38 Cherry, Black .50 Chestnut, American .43 Cottonwood .34-.40 Elm .60.63 Hackberry .53 Hickory, Pecan .60.66 Hickory, True .69-.75 Honey locust .66 (est.) Locust, Black .69 Magnolia .48-.50 Maple .48-.63 Oak, Red .59-.67 Oak, White .64-.88 Poplar .42 Sassafras .42 Sweet gum .52 Sycamore, American .49 Tanoak .64 (est.) Tupelo .50 Walnut, Black .55 Willow, Black .39

SOFTWOODS DENSITY

Bald cypress .46 Cedar .31-.47 Douglas Fir .46-.50 Fir .32-.43 Hemlock .40-.45 Larch, Western .52 Pine .39-.59 Redwood .35-.40 Spruce .35-.41 Tamarack .53

STARTING A FIRE

Note: Caution must be observed when operating this ﬁ replace under windy conditions. Do Not burn large ﬁ res, as ﬂ ames may be drawn out of the ﬁ rebox. If this occurs, close the glass doors immediately. If not equipped with doors, extinguish the ﬁ re or keep it to a minimum if safe. The screens must be closed at all times while in operation, except when feeding the ﬁ re.

1. To start a ﬁ re in a the ﬁ replace properly, ﬁ rst check the operation of the ﬂ ue damper.

2. To prevent smoking at start-up, if the unit is installed indoors, close any window located near the ﬁ replace when ﬁ rst lighting a ﬁ re. The closed windows may be reopened once a chimney draft is drawn in the ﬁ replace.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

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