Majestic fireplaces MO18, MO18M, MO24M Installation Instructions Manual

20012914 7/05 Rev. 0

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Models: MO18M, MO24M

Majestic Burner/Hearth and Log Kits

For Natural Gas Use Only

Installation Instructions

Check with your local building code agency before you begin installation to ensure compliance with local codes, including
the need for permits and follow-up inspections. If you encounter any problems regarding code approvals, or if you need

clarication of any of the instructions contained here, contact the Technical Services Dept.,

DO NOT DISCARD THIS MANUAL

CAUTION

• Im porta nt operating
a n d m a i n t e n a n c e
instructions included.

•

Leave this manual with
party responsible for
use and operation.

•

Rea d , understa n d
an d fo ll ow th es e
instructions for safe
i ns ta ll at io n a n d
operation.

If the information in these instruc­tions is not followed exactly, a

re may result causing property
damage, personal injury, or death.

• Do not store or use gasoline or other am

­mable vapors and liquids in the vicinity of
this or any other appliance.

• What to do if you smell gas:

- Do

not try to 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 the gas
supplier’s instructions.

- If you cannot reach your gas supplier, call

the re department.

• Installation and service must be performed

by a qualied installer, service agency, or

the gas supplier.

WARNING

HOT! DO NOT TOUCH.

SEVERE BURNS MAY RESULT.
CLOTHING IGNITION MAY RESULT.

WARNING

• Keep children away.

• CAREFULLY SUPERVISE children in same room as

appliance.

• Alert chil d r e n and adult s to haza r d s of hi gh
temperatures.

• Keep cl o t h i n g , fu r n i t u r e , dr a p e r i es an d other
combustibles away.

Glass and other surfaces are hot during
operation and cool down.

Installation and service of this
appliance should be performed by

qualied personnel. CFM suggests

NFI certified or factory-trained
professionals, or techni c i a n s
supervised by an
NFI certied profes­sional.

In the Commonwealth of Massachusetts:

• This appliance must be installed by a licensed plumber
or gas tter.

• The chimney ue damper, when used with gas logs, will

be welded open or completely removed.

• A CO detector shall be installed in the room where the
appliance is installed.

Intended for use in all CFM Corporation factory built replaces

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Read this manual before installing or operating this appliance.

Please retain this owner’s manual for future reference.

Congratulations on selecting a CFM gas log set—an elegant
and clean alternative to burning wood. The CFM gas log set

you have selected is designed to provide the utmost in safe-

ty, reliability, and efciency.

As the owner of this new gas log set, you’ll want to read
and carefully follow all of the instructions contained in this

owner’s manual. Pay special attention to all cautions and

warnings.

This owner’s manual should be retained for future reference.

We suggest you keep it with your other important documents
and product manuals.

The information contained in this owner’s manual, unless

noted otherwise, applies to all models and gas control sys­tems.

Your new gas log set will give you years of durable use and
trouble-free enjoyment.

Listing Label Information/Location

The model information regarding your specic gas log set can be found on the rating plate.

Congratulations

FOR YOUR SAFETY

Do not store or use gasoline or other ammable vapors
and liquids in the vicinity of this or any other appliance

NOTE: TO BE USED IN A WOOD-BURNING FIRE PLACE

ONLY. KEEP DAMPER WIDE OPEN WHEN IN USE.

Complies with RGA2-72

CFM Majestic

Decorative Gas Logs MODEL NUMBER

SERIAL NUMBER

INPUT RATING

GAS TYPE

MANIFOLD PRESS. In water column

Manufacture: CFM Corporation - Decatur, GA 30035

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Table of Contents

1 Listing and Code Approvals

A. Appliance Certication . . . . . . . . . . . . . . . . . . . . . . . . . 4

B. Table 1

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

2 Getting Started

A. Size of Firebox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

B. Negative Pressure

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

C. Tools and Supplies Needed

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

D. Inspect the Appliance and Components

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

E.

Components of the Gas Hearth Kit . . . . . . . . . . . . . . . 6

3 Appliance Preparation

A. Gas Supply Connection . . . . . . . . . . . . . . . . . . . . . . . . 7

B. Convert to Left Side Gas Piping

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

C. Gas Pressure

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

4 Installation Instructions

A. Install the Damper Stop . . . . . . . . . . . . . . . . . . . . . . . .9

B. Install the Burner/Pan Assembly

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

C. Install the Grate

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

D. Place Sand and Rockwool

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

E. Install the Logs

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

F. Adjust the Burner Flame

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

G. Inspect the Venting System

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

5 Operating Instructions

A. Lighting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 12

B. Glass Doors

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

C. Important Safeguards

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

6 Maintaining and Servicing the Appliance

A. Servicing Your Appliance . . . . . . . . . . . . . . . . . . . . . .14

B. Cleaning Your Appliance

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

C. Annual Inspection

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

D. Troubleshooting

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

7 Reference Materials

A. Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . .15

B. Owner Registration/Warranty . . . . . . . . . . . . . . . . . . . 17

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Listing and Code Approvals

A. Appliance Certication

The Gas Log Hearth Kits have been tested and listed in the
U.S. in accordance with ANSI Z21.84-2003 (Gas Log Set).
They have been listed by OMNI Test Labs for installation and
operation in the United States and Canada as described in

these Installation and Operating Instructions. All components

are UL, OMNI or CSA safety certied.

Check with your local building code agency prior to installing
this appliance to ensure compliance with local codes,
including the need for permits and follow-up inspections. In
the absence of local codes, comply with the National Fuel

Gas Code, ANSI Z223.1-Latest Edition in the U.S. If any

assistance is required during installation, please contact
your local dealer.

B. Table 1

Improper installation, adjustment, alteration, service
or maintenance can cause injury or property damage.
Refer to the owner’s information manual provided with
this appliance. For assistance or additional information

consult a qualied installer, service agency or the gas

supplier.

WARNING

Fire Risk
Exhaust Fumes Risk

• Do NOT use this appliance as a “vent-free

heater.

The ue must be permanently open. Refer
to Table 1.

WARNING

Product 18” 24”

Inlet BTU Nat. 67,000 68,000

Max. Inlet Pressure

IN. WC / KPa

Nat. 10.0 / .052 10 / .052

Min. Inlet Pressure IN.

WC / KPa

Nat. 3.5 / .018 3.5 / .018

Orice Size

In.

Nat. (#28) (#26)

Minimum Fireplace

Opening Size

In. / cm

Front 33 38

Rear 20 26

Depth 15 15

Height 21 21

Min. Vent Opening in

Square In. / cm

39 / 251.6 48 / 309.7

These Hearth/Log Kits are for use with all CFM Factory built replaces.

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Getting Started

A. Size of Firebox

See Table 1 in Section 1.B.

Asphyxiation Risk

This appliance produces carbon monoxide
(CO).

• The free opening areas (in square inches)

of the chimney damper as shown in the
tables must be met.

• User must make sure damper is locked
open.

• The installer is responsible to ensure
proper ventilation of ue gases before

appliance is used.

Fire needs to draft properly fo r sa f e
operation.

WARNING

B. Negative Pressure

Negative pressure results from the imbalance of air avail-

able for the replace to operate properly. Causes for this

imbalance include:

• Exhaust fans (kitchen, bath, etc.).

• Range hoods.

• Combustion air requirements for furnaces, water heaters
and other combustion appliances.

• Clothes dryers.

• Loc a ti on of re tu r n- a ir ve nt s to fu rn a ce or ai r
conditioning.

• Imbalances of the HVAC air handling system.

• Upper level air leaks: recessed lighting, attic hatch
opening, duct leaks.

C. Tools and Supplies Needed

Tools and supplies normally required for installation:

Pliers

Phillips screwdriver

Tape measure

Crescent wrenches

Gas shutoff valve

Non-corrosive leak check solution

3/4 in. wrench, 7/16 in. wrench

Sharp Edges

• We a r protective gloves
and safety glasses during
installation.

CAUTION

D. Inspect the Appliance and Components

• Remove the contents from the carton. Attached to the
burner are tags identifying the manufacturer name, serial

number, model number (including gas log size), BTU

ratings, gas type, etc.

• Review the attached tags before proceeding. Ensure

that all minimum replace dimension requirements are
achieved using Table 1 in Section 1.B. Ensure the gas
type provided in the replace coincide with the gas type

marked on the tag.

CFM disclaims any responsibility for, and

the warranty will be voided by, the following
actions:

• Installation and use of any damaged appliance or
vent system component.

• Modication of the appliance or vent system.

• Installation other than as instructed by CFM•

Improper positioning of the gas logs or the glass
door.

• Installation and/or use of any component part not

approved by CFM.

Any such action may cause a re hazard.

WARNING

Rear dimensionDepth dimension

Front dimension

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E. Components of the Gas Hearth and Log Kit

The Burner/Hearth Kit consists of the following:

• Burner/Pan Assembly

• Grate Assembly

• Glowing Embers

• Sand

• Lava Rock

• Damper Stop

• Aluminum Tubing Assembly

• Brass Elbow Connector

• Brass Orice & Cap
. Log Set

Keep appliance dry.

• Mold or r u s t may cau s e

odors.

• Water may damage controls.

WARNING

Do NOT use this appliance if any part has been under
water. Immediately call a qualied service technician

to inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.

WARNING

Inspect appliance and components for

damage. Damaged parts may impair safe

operation.

• Do NOT install damaged components.

• Do NOT install incomplete components.

• Do NOT install substitute components.

Report damaged parts to dealer.

WARNING

Shock Risk
Fire Risk

Use ONLY optional accessories approved
for this appliance.

• Using non-listed accessories voids
warranty.

• Using non-listed accessories may result
in a safety hazard.

• Only CFM approved accessories may be

used safely.

WARNING