Vermont Casting Indoor Fireplace VL18 User Manual

Installation and Operation Instructions for  
Vent-Free Gas Log Sets*  
Models: VL18, VL21 and VL24 (Natural Gas)  
VL18LP, VL21LP and VL24LP (Propane)  
CERTIFIED  
I
Tested and listed to  
ANSI Z21.11.2b-2004, Unvented Heaters, and  
Z21.60b-2004; CGA 2.26b-2004  
Decorative Gas Appliances for  
Installation inSolid-Fuel Burning Fireplaces.  
W A R N I N G  
If the information in this manual is not followed exactly, a fire or explosion may result, causing property  
damage, injury, or loss of life.  
Do not store or use gasoline or other flamma-  
ATTENTION  
ble vapors and liquids in the vicinity of this or  
Installation and service must be performed by  
any other appliance.  
a qualified agency, individual, firm, corpora-  
tion, or company, experienced in the installa-  
tion, repair, and servicing of this type of gas  
appliance. Do not modify, alter or tamper with  
any part of this heater, control, or logs.  
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 suppli-  
er’s instructions.  
This appliance may be installed in an after-  
market, permanently located, manufactured  
(mobile) home, where not prohibited by local  
codes.  
If you cannot reach your gas supplier, call  
This appliance is only for use with the type  
of gas indicated on the rating plate. This ap-  
pliance is not convertible for use with other  
gases.  
the fire department.  
INSTALLER PLEASE NOTE:  
DO NOT begin installation of this gas logset  
until all instructions have been read and  
understood.  
*These logsets are not for exterior use.  
W A R N I N G  
CARBON MONOXIDE POISONING MAY LEAD TO DEATH  
When used without fresh air, vent-free log sets may give off carbon monoxide, an odorless, poisonous gas.  
Some people - pregnant women, people with heart or lung disease, anemia, or persons under the influence of alcohol, and  
persons at high altitudes are more affected by carbon monoxide than others.  
Early signs of carbon monoxide poisoning resemble the flu - headache, dizziness, and/or nausea. If you have these signs, the  
heater may not be installed or working properly. GET FRESH AIR AT ONCE! Have the heater serviced before using it again.  
INSTALLER: Leave this manual with the appliance.  
CONSUMER: Retain this manual for future reference.  
20002538 1/07 Rev. 8  
 
Installation Requirements  
The fireplace must meet the minimum dimensions listed below. (Fig. 1) Do not install the logset if the fireplace does  
not meet these minimums.  
Min. Fireplace Dimensions  
Front Rear Overall Overall Pressure (w.c.) Manifold Input  
Width Width Depth Height Min.  
Inlet Supply  
Min.  
Max.  
Input  
BTU/hr  
24,000 .188” Open  
32,000 .250” Open  
35,000 .375” Open  
Air  
Shutter  
Setting  
Logset  
Gas  
Max.  
10.5  
10.5  
10.5  
Pressure BTU/hr  
18” VL18  
21” VL21  
24” VL24  
21”  
16¹⁄₂”  
18¹⁄₂”  
18¹⁄₂”  
13¹⁄₂”  
13¹⁄₂”  
13¹⁄₂”  
17”  
17”  
17”  
5.0  
5.0  
5.0  
3.5  
3.5  
15,000  
18,000  
18,000  
Natural 21”  
25”  
3.5  
Cop. SIT  
18” VL18LP  
21” VL21LP Propane 21”  
24” VL24LP  
21”  
16¹⁄₂”  
18¹⁄₂”  
18¹⁄₂”  
13¹⁄₂”  
13¹⁄₂”  
13¹⁄₂”  
17”  
17”  
17”  
11.0 14.0  
11.0 14.0  
11.0 14.0  
8.5 10.0 15,000 24,000 Full Open  
8.5 10.0 18,000 32,000 Full Open  
8.5 10.0 18,000 35,000 Full Open  
25”  
Odor During Operation  
Neither natural gas nor propane gas give off an odor  
when burned. The nature of a vent free combustion  
system, however, is such that odors may occasionally  
be produced during heater operation when impurities  
exist in the immediate area. Cleaning solutions, paint,  
solvents, cigarette smoke, candles, adhesives, new car-  
pet or textiles, etc., all can create fumes. These fumes  
may mix with combustion air and can create odor. Such  
odors will disappear over time, however, the condition  
can be alleviated by opening a window or otherwise  
providing additional ventilation to the area.  
D
B
C
A
A. Front Width B. Rear Width C. Depth D. Height  
High Elevations  
FD370-2  
Input ratings are shown in BTU per hour and are  
certified without deration from elevations up to  
4,500 feet (1,370 m) above sea level.  
Fig. 1 Minimum fireplace dimensions.  
Pressure Test Points  
Nuisance outages may occur at altitudes above  
4,500 feet (1,370 m) if dirt, dust, lint and/or cob-  
webs are allowed to accumulate on burner and/or  
ODS pilot. Monthly inspection and cleaning is  
recommended for altitudes above 4,500 feet  
(1,370 m)  
Copreci Valve: 1/8” N.P.T. plugged tapping is provided  
on the outlet side of the gas control for a test manifold  
pressure.  
SIT Valve: Inlet and manifold taps are provided on the  
right side of the valve.  
For elevations above 4,500 feet (1,370m) in USA,  
installations must be in accordance with the  
current ANSI Z223.1/NFPA 54 and/or local codes  
having jurisdiction.  
Proposition 65 Warning: Fuels used in gas, wood-  
burning or oil fired appliances, and the products of  
combustion of such fuels, contain chemicals known  
to the State of California to cause cancer, birth de-  
fects and other reproductive harm.  
In Canada, please consult provincial and/or local  
authorities having jurisdiction for installations at  
elevations above 4,500 feet (1,370 m)  
California Health & Safety Code Sec. 25249.6  
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3
 
When installed as a Decorative Gas Appliance for  
installation in a solid-fuel burning fireplace, a minimum  
permanent free opening of 29 square inches must be  
maintained with a fixed damper stop provided with the  
appliance. Minimum flue size for this appliance is 29  
square inches.  
Planning  
Planning the installation is an important first step. It will  
save time and money later in the actual installation. In  
planning the installation, consider:  
Where the heater will be located.  
All components needed to complete the installation.  
DO NOT use this heater in bedrooms, bathrooms,  
mobile homes or in recreational vehicles.  
Installation Precautions  
1. This vent-free gas appliance and its components  
have been tested and will operate safely when installed  
in accordance with this Installation Manual. Read all  
instructions before starting the installation, and fol-  
low these instructions carefully during installation to  
maximize the appliance’s benefit and safety. Failure to  
follow them will void your warranty and may present a  
fire hazard.  
Installation and repair should be done by a qualified  
service person.  
DO NOT use this heater if any part has been under  
water. Immediately call a qualified technician to inspect  
the appliance and replace any part of the control sys-  
tem and any gas control which has been under water.  
When used as an unvented heater, always ensure  
that there is adequate ventilation from the room where  
the appliance is operating. This appliance is equipped  
with an ODS (oxygen depletion sensor) pilot light safety  
system designed to shut off the appliance if enough  
fresh air is not available.  
2. After opening the carton, refer to Replacement Parts  
illustrationon Page 17, and remove the various parts.  
Report to your dealer if any parts were damaged in  
shipment.  
The CFM Corporation warranty will be voided by,  
and CFM Corporation disclaims any responsibility  
for, the following actions:  
THIS APPLIANCE MUST NOT BE USED WITH GLASS  
DOORS IN CLOSED POSITION.  
Installation of any damaged appliance.  
Modification of the appliance.  
Installation other than as instructed by CFM  
Corporation.  
Keep the burner and control compartment clean. See  
installation and operating instructions supplied with the  
heater.  
WARNING: DURING MANUFACTURING, FABRICAT-  
ING AND SHIPPING, VARIOUS COMPONENTS OF  
THIS APPLIANCE ARE TREATED WITH CERTAIN  
OILS, FILMS OR BONDING AGENTS. THESE CHEMI-  
CALS ARE NOT HARMFUL, BUT MAY PRODUCE  
ANNOYING SMOKE AND SMELLS AS THEY ARE  
BURNED OFF DURING THE INITIAL OPERATION  
OF THE APPLIANCE, POSSIBLY CAUSING HEAD-  
ACHES OR EYE OR LUNG IRRITATION. THIS IS A  
NORMAL AND TEMPORARY OCCURRENCE. THE  
INITIAL BREAK-IN OPERATION SHOULD LAST 2-3  
HOURS WITH THE BURNER AT ITS HIGHEST SET-  
TING. PROVIDE MAXIMUM VENTILATION BY OPEN-  
ING WINDOWS, DOORS AND THE CHIMNEY FLUE  
TO ALLOW ODORS TO DISSIPATE. ANY ODORS  
REMAINING AFTER THIS INITIAL BREAK-IN WILL BE  
SLIGHT AND WILL DISAPPEAR WITH CONTINUED  
USE.  
Improper positioning of the gas logs.  
Installation and/or use of any component part  
or accessory not manufactured or approved by  
CFM Corporation, not withstanding any inde-  
pendent testing laboratory or other third-party  
approval of such component part or accessory.  
Any such action may create a possible fire hazard.  
Consult your local building codes.  
W A R N I N G  
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.  
State or local codes may only allow operation of this  
appliance in vented configurations. Check your state or  
local codes. If unvented room heaters are not permit-  
ted, the fireplace vent damper must be locked at the  
minimum vent area required by local codes or by the  
National Fuel Gas Code (ANSI Z223.1/NFPA 54, latest  
edition) and CSA-B149.1 Installation Codes for Gas  
Burning Appliances.  
This heater shall not be installed in a confined  
space unless provisions are provided for adequate  
combustion and ventilation air.  
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Installation Requirements  
If your home does not meet the above criteria, follow  
the procedure below.  
Fresh Air Requirements for  
Combustion and Ventilation  
Determine If You Have a Confined  
or Unconfined Space  
W A R N I N G  
Use the following formula to determine if you have a  
confined or unconfined space.  
This heater must have fresh air for proper opera-  
tion. If it does not, poor fuel combustion could  
result. Read the following instructions to ensure  
proper fresh air supply for this and other fuel-  
burning appliances in your home.  
Space is defined as the room in which you will install  
the heater, plus any adjoining rooms with doorless pas-  
sageways or ventilation grilles between the rooms.  
Modern construction standards have resulted in homes  
that are highly energy-efficient and that allow little heat  
loss. Your home needs to breathe, however, and all  
fuel-burning appliances need fresh air to function prop-  
erly and safely. Exhaust fans, clothes dryers, fireplaces  
and other fuel burning appliances use the air inside the  
building. If the available fresh air supply is insufficient to  
meet the demands of these appliances, problems can  
result.  
The National Fuel Gas Code defines a confined space  
as a space whose volume is less than 50 cubic feet per  
1,000 BTU per hour input rating (4.8m3 per Kw) of the  
aggregate (total) input rating of all appliances installed  
in that space and an unconfined space as a space  
whose volume is not less than 50 cubic feet per 1,000  
BTU per hour (4.8m3 per Kw) of the aggregate input  
rating of all appliances installed in that space. Rooms  
communicating directly with the space in which the ap-  
pliances are installed, through openings not furnished  
with doors, are considered a part of the unconfined  
space.  
The vent-free logsets have specific fresh air require-  
ments. You must determine that these requirements  
will be met within the space where the appliance will be  
installed. The following information will help you ensure  
that adequate fresh air is available for the heater to  
function properly.  
1. Determine the volume of space (length x width x  
height). Include adjoining rooms connected by doorless  
passageways or ventilating grilles.  
Example: A room that is 18’ x 12’ x 8’ has a volume of  
1728 cubic feet. An adjoining open kitchen that is 10’  
x 12’ x 8’ has a volume of 960 cubic feet. An adjoining  
open dining room is 12’ x 12’ x 8’ with a volume of 1152  
cubic feet. The total volume is 3840 feet.  
Provide for Adequate Ventilation  
Any space within a home can be classified in these  
categories:  
1) Unusually tight construction  
2) Confined space  
3) Unconfined space  
2. Divide the volume of space by 50 cubic feet. The  
First, determine which classification defines the intend-  
ed installation space.  
result is the maximum BTU/hour the space can support.  
Example: 3840 cubic feet divided by 50 = 76.8 or  
Unusually Tight Construction  
76,800 BTU/hour.  
3. Add the BTU/hour ratings of all fuel-burning applianc-  
es installed in the same space, including the following:  
You must provide additional fresh air if the space falls  
into this classification. Unusually Tight Construction is  
defined as construction wherein:  
Gas Water Heater  
Gas Fireplace Logs  
Vented Gas Heater*  
Gas Furnace  
Vent-free Gas Heater  
Other Gas Appliances*  
a. Walls and ceilings exposed to the outside atmo-  
sphere have a continuous water vapor barrier with a  
rating of one perm or less, with openings gasketed or  
sealed, and  
b. weather stripping has been added on openable win-  
dows and doors and  
c. caulking or sealants are applied to areas such as  
joints around windows and door frames, between sole  
plates and floors, between wall and ceiling joints, be-  
tween wall panels, at penetrations for plumbing, electri-  
cal and gas lines and at all other openings.  
*Do not include Direct-vent appliances as these use  
outdoor air for combustion and vent to the outdoors.  
Example:  
Gas Range  
Vent-free Logset  
55,000 BTU/hour  
+25,000 BTU/hour  
80,000 BTU/hour  
Total  
If your home meets all of the above criteria, you must  
provide additional fresh air for the appliance as detailed  
on Page 6.  
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5
 
4. Compare the maximum BTU/hour rating the space  
can support with the total BTU/hour used by the appli-  
ances.  
For further information on ventilation guidelines and siz-  
ing specifications, follow the National Fuel Gas Code/  
NFPA 54/ANSI Z223.1, Section 5.3.  
Example: 76,800 BTU/hour the space can support  
If the total BTU/hour used by the appliances is less than  
the maximum BTU/hr the space can support, the room  
meets the Unconfined Space criteria and no further  
ventilation is needed.  
80,000 BTU/hour used by appliances  
In this example, the maximum BTU/hour that the space  
can support is less than the total used by the applianc-  
es. The space is considered to be Confined Space.  
W A R N I N G  
Additional air must be provided to meet the require-  
ments of the vent-free gas log set.  
This heater shall not be installed in a confined  
space or unusually tight construction unless  
provisions are made for adequate combustion  
and ventilation air.  
The installation and the provisions for combustion and  
ventilation air must conform with the National Fuel Gas  
Code, ANSI Z223.1/NFPA 54, or the CSA-B149 Installa-  
tion Code (Series).  
W A R N I N G  
A confined space may be ventilated in two ways:  
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, 1992 Sections 5.3, or applicable codes.  
A. Open or provide at least two ventilating grilles to an  
adjoining unconfined space. (Fig. 2)  
Each of the two grilles must provide an opening of at  
least 50 square inches, with all opening dimensions be-  
ing at least 3”. One grille must be within 12” of the ceil-  
ing; the other within 12” of the floor. (If the total exceeds  
100,000 BTU/hour, additional grilles will be needed.)  
WARNING: Before installing the gas logset in a solid-  
fuel burning fireplace, the chimney flue and firebox must  
be cleaned of soot, creosote and loose paint by a quali-  
fied chimney cleaner.  
B. Vent the room directly to the outdoors. (Provide one  
square inch of opening for each 4,000 BTU/hour)  
12”  
Option 1 -  
Vents to  
Adjoining  
Rooms  
Option 3 -  
Vents to  
Adjoining  
Room  
Option 2 -  
Remove Door to  
Adjoining Rooms  
12”  
VO370-2  
Fig. 2 Ventilaton options for confined spaces.  
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WARNING: Do not allow fans to blow directly  
into the fireplace. Avoid any drafts that alter  
burner flame patterns.  
Fireplace Top View  
Hole in Outer Casing  
WARNING: Do not use a blower insert, heat ex-  
changer insert or other accessory not approved  
for use with this gas logset.  
1"  
Supply  
Line  
Gas Line  
Tube  
Do not burn solid fuels in a fireplace where an  
unvented gas room heater or logset is installed.  
Ceramic  
Knockout  
Repack  
Insulation  
Any outside air ducts and/or ashdumps in the  
fireplace must be permanently closed at time of  
appliance installation.  
Hole in  
Installation Instructions  
Outer  
Casing  
Preparing the Fireplace  
Gas Line Preparation  
Ceramic  
Knockout  
(Both Sides)  
Before connecting the appliance, turn off all gas appli-  
ances. Close the main gas valve at the gas meter or  
appliances. Close the main gas valve at the gas meter  
or LP tank. Make certain there is good ventilation where  
the installation will be made. Installation should comply  
with all applicable building codes and ANSI Z223.1/  
NFPA 54, latest edition. Use LP gas-resistant pipe com-  
pound to seal threaded joints.  
FP560  
Fig. 3 Gas line installation - factory-built fireplaces.  
Masonry Fireplace Installation  
Preparation  
A 1/2 inch gas supply line must be supplied to the  
firebox. In most cases, this will require drilling a gas line  
access hole through the masonry wall. The gas supply  
line should then be sealed in the access hole with mor-  
tar. The gas supply line should also have a valve within  
easy reach of the appliance. Use only N.P.T. black iron  
gas line. (Do not use cast-iron pipe.)  
Installation to Existing Gas Line  
There should be a manual ON/OFF valve within easy  
reach of the appliance. If not, before installation of the  
appliance make certain a valve is installed. There may  
be a second valve on the line close to the point where  
the fireplace line branches off the main gas supply line.  
During installation, make certain this valve is OFF.  
Clean the fireplace and chimney (if used) of any ashes,  
soot, creosote or obstructions. This will minimize any  
smell from the fireplace. We recommend cleaning by a  
chimney sweep.  
Manufactured Fireplace Preparation  
Refer to the manufacturer’s fireplace installation manual  
for the specific method of running the gas line into the  
fireplace. The following method is typical of most manu-  
factured fireplaces.  
Flue Damper Preparation  
The vented fireplace damper should be fully opened  
when operating the appliance as a vented log set. A  
damper stop clamp with set screw is provided as a  
means to prevent full closure of the fireplace damper  
blade. The clamp is designed to prevent accidental  
closure of the damper when in use. If the damper stop  
cannot be installed, a permanent damper stop that will  
keep the damper open a minimum of 1¹⁄₂” should be  
installed.  
Insert a 1/2” gas pipe through the gas line tube provided  
by the manufacturer, from outside the fireplace, as  
marked by the manufacturer. An ON/OFF valve should  
be placed within easy reach of the appliance. After the  
gas supply is installed, reinstall the insulation removed  
from the gas line tube, and pack it around the pipe, to  
prevent cold air entry and to protect the gas line. (Fig.  
3)  
NOTE: The gas pipe should not come into contact with  
any wood structure until it has reached a point at least  
one (1) inch away from the fireplace side. (Fig. 3)  
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Damper Stop Installation  
Damper Locking Bracket  
When installing a decorative gas appliance in a fire-  
place, some local codes require a damper stop be  
added so the damper will not close completely. The  
CFM Corporation damper stop is designed so the  
damper can be locked in the closed position, and still  
allow a vent for the pilot gasses.  
This damper stop is designed to work on all CFM Cor-  
poration BR, BC, TF, TL, SR and SC series fireplaces.  
Installation Instructions  
Open damper. The damper must be open to attach the  
damper stop.  
Locate the damper locking bracket. From inside the fire-  
place locate the damper locking bracket on the left side  
of combustion dome. (Fig. 4)  
DP100  
Fig. 4 Locate damper locking bracket.  
Align the two slots on either side of the cutout on the  
damper stop with the two small holes on the angled  
portion of the damper locking bracket. Attach the  
damper stop with the screws provided. (Fig. 5)  
Damper Locking Bracket  
NOTE: Some of the early units may not have the holes  
in the end of the damper locking bracket. If this is the  
case use the damper stop as a template to drill two (2)  
1/8” holes in the damper locking bracket to mount the  
damper stop.  
Attachment Screws (2)  
Damper Stop  
DP101  
Fig. 5 Attach damper stop.  
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8
 
6b  
6c  
6a  
Without Hood  
Ceiling  
With Hood  
Noncombus-  
tible Facing  
Material  
42” Min.  
Noncombustible  
Material  
4¹⁄₂”  
Min.  
Standoff  
38¹⁄₂”  
8”  
Flat Man-  
tel Shelf  
20”  
2¹⁄₂”  
2¹⁄₂”  
7¹⁄₄”  
6³⁄₄”  
4¹⁄₂”  
MC656-2  
Min.  
Front View  
Finished Wall Material  
Firebox  
4” Hood  
Mantel  
Trim  
Seal With  
Noncombustible  
Material  
Front  
3¹⁄₄” - VL18  
5¹⁄₄” - VL21, VL24  
Edge of  
Grate  
4¹⁄₂”  
Min.  
Mantel  
Trim  
4¹⁄₂”  
Min.  
Noncombustible  
Facing Material  
MC609  
MC656-1  
Top View  
Fig. 6 Mantel clearances.  
MC656-3  
Connect the appliance to the gas line using fittings and  
aluminum tubing provided.  
Burner Assembly Location  
Centrally locate the unit in the fireplace, far enough  
back into the firebox to accomplish adequate draft (if  
use as a vented appliance is planned). Ensure the front  
grate feet sit inside the front edge of the fireplace a  
minimum of 3¹⁄₄”. (Fig. 6b)  
Close the valve knob on the appliance, turn the main  
gas supply valve “ON” and carefully check all gas  
connections for leaks, with a soapy water solution or a  
sniffer.  
DO NOT TEST FOR LEAKS WITH AN OPEN FLAME.  
Gas Line Connection  
On completing your gas line connection, a small  
amount of air will be in the gas lines. When first lighting  
the pilot, it will take a few minutes for the lines to purge  
themselves of air. Once the purging is complete, the  
pilot and burner will light and operate as indicated in  
this manual. Subsequent lightings of the appliance will  
not require purging.  
Check the gas type. Use only the gas type indicated on  
the appliance rating plate. If the gas listed on the plate  
is not the type of gas supplied, DO NOT INSTALL the  
logset. Contact your dealer for the proper model.  
Always use an external regulator for all LP appliances,  
to reduce the supply tank pressure to a maximum of  
14” w.c. This is in addition to the regulator fitted to the  
heater.  
During initial purging and subsequent lightings,  
never allow the gas valve control knob to remain  
depressed in the ‘PILOT’ position without light-  
ing the pilot with a match or piezo ignitor.  
CONNECTION TO AN UNREGULATED LP TANK  
CAN CAUSE AN EXPLOSION  
The normal gas connection is made at the right side  
(facing unit). If a left-side connection is desired, the con-  
necting pipes may be directed under or behind the rear  
of the appliance, to terminate at the right hand side for  
connection to the inlet of the appliance.  
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9
 
Check the inlet pressure to the appliance, to ensure that  
it is as shown in the table on page 3. The minimum is  
for the purpose of input adjustment.  
Clearances  
(Refer to Fig. 6, Page 9)  
To ensure the safe installation into a masonry or factory  
built fireplace, the following instructions must be care-  
fully observed.  
1. Sidewall Clearances: The clearance from the inside  
of the front opening of the fireplace to any combustible  
wall or mantel should not be less than 4¹⁄₂”. (Fig. 6a)  
2. Ceiling Clearances: The ceiling height should not be  
less than 42” from the top of the fireplace opening.  
(Fig. 6a)  
The pressure is controlled by the regulator and should  
be checked at the pressure test point located in the  
control valve body. Access to the pressure test point is  
obtained by removing all logs.  
The pressure should be checked with the appliance  
burning and the control set on ‘HIGH’.  
The pressure is preset and locked to avoid tampering. If  
the pressure is not as specified, replace the valve. See  
Replacement Parts, page 17.  
3. Mantel Clearances:  
After measuring the pressure, replace the test point  
plug, ensure there are no leaks, then place the logs in  
their specified positions.  
WITHOUT HOOD  
If no hood is installed then there must be noncombusti-  
ble material from the top front opening of the fireplace to  
a height of at least 20” and the full width of the fireplace.  
A combustible flat mantel shelf can be no closer than  
38¹⁄₂” from the top front of the opening of the fireplace.  
(Fig. 6b)  
There is a possibility of odor fade in LP. Never  
install an LP appliance or service line below  
grade without a gas detector.  
Positioning the Logs  
WITH HOOD  
The logs must be positioned on the grate and locating  
pins as shown in Figures 7-9.  
If a hood is installed there must be noncombustible  
material from the top front opening of the fireplace to  
a height of 6³⁄₄” and the full width of the fireplace. A  
combustible flat mantel shelf and breastplate may be  
installed. (Fig. 6c)  
Gas logs must be properly positioned or the appliance  
will not function properly and may result in soot accu-  
mulation on the inside of the firebox and/or gas logs.  
Make sure there is no flame impingement on the logs  
which could result in excessive carbon monoxide emis-  
sions.  
Failure to use a noncombustible material above the  
opening as specified in these instructions may cause  
damage to the materials used or cause a fire hazard.  
WARNING: Failure to position the parts in accor-  
dance with these diagrams or failure to use only  
parts specifically approved with this heater may  
result in property damage or personal injury.  
4. Grate Clearances: The minimum clearance between  
the front legs of the grate and front edge of the fireplace  
is 3¹⁄₄”. (Fig. 6b)  
NOTE: Combustible mantels, surrounds and cabinets  
should be finished with materials that can withstand  
250°F.  
Carefully position the logs as shown in Figures 7-9.  
Make sure each bottom log engages the locator pins on  
the grate and top logs are properly positioned in notch-  
es on top of the bottom logs.  
Make sure there is no flame impingement on the  
cross logs which could result in excessive carbon  
monoxide emissions.  
The optional volcanic rock may be applied to the  
hearth around the burner assembly.  
Never place any other material on the burner.  
Fireplace Screen  
The fireplace screen must be in place when the appli-  
ance is operating, and unless other provisions for com-  
bustion air are made, the screen must have openings  
for the introduction of combustion air.  
20002538  
10  
 
Locator  
Pins  
Locator  
Pin  
Locator  
Pins  
Locator  
Pins  
Grate  
Locator Pin  
LG100  
Fig. 7 VL18 log placement.  
Grate  
Locator Pin  
LG104  
Fig. 9 VL24 log placement.  
Locator  
Pin  
Locator  
Pins  
Grate  
Locator Pin  
LG102  
Fig. 8 VL21 log placement.  
20002538  
11  
 
Lighting and Operating Instructions  
FOR YOUR SAFETY READ BEFORE LIGHTING  
WARNING:If you do not follow these instructions exactly, a fire or explosion  
may result causing property damage, personal injury or loss of life.  
A. This heater has a pilot which must be lit manu-  
ally. When lighting the pilot follow these  
If you cannot reach your gas supplier, call the  
Fire Department  
instructions exactly.  
C. Use only your hand to push in or turn the gas con-  
trol knob. Never use tools. If the knob will not push  
in or turn by hand, do not try to repair it, call a  
qualified service technician. Applying force or any  
attempted repair may result in a fire or explosion.  
B. BEFORE LIGHTING smell all around the heater  
area for gas. Be sure to smell next to the floor  
because some gas is heavier than air and will  
settle on the floor.  
WHAT TO DO IF YOU SMELL GAS  
D. Do not use this fireplace if any part has been  
under water. Immediately call a qualified service  
technician to inspect the heater and to replace  
any part of the control system and any gas control  
which has been under water.  
Do not try to light any fireplace  
Do not touch any electric switch  
Do not use any phone in your building  
Immediately call your gas supplier from a neigh-  
bor’s phone. Follow the gas supplier’s instruc-  
tions.  
Lighting Instructions  
1. STOP! Read the safety information above.  
2. Turn off all electrical power to the fireplace.  
3. For MN/MP/TN/TP appliances ONLY, go on to  
Step 4. For RN/RP appliances turn the On/Off  
switch to “OFF” position or set thermostat to  
lowest level.  
10. Push the control knob all the way in and hold.  
Immediately light the pilot by repeatedly depress-  
ing the piezo spark ignitor until a flame appears.  
Continue to hold the control knob in for about one  
(1) minute after the pilot is lit. Release knob and it  
will pop back up. Pilot should remain lit. If it goes  
out, repeat steps 5 through 8.  
4. Open control access panel.  
5. Push in gas control knob slightly and turn  
clockwise  
to “OFF”.  
3/8" - 1/2"  
OFF  
PILOT  
o
2
O
Honeywell  
Euro SIT  
SIT NOVA  
If knob does not pop up when released, stop  
and immediately call your service technician or  
gas supplier.  
6. Wait five (5) minutes to clear out any gas. Then  
smell for gas, including near the floor. If you  
smell gas, STOP! Follow “B” in the safety infor-  
mation above. If you do not smell gas, go to the  
next step.  
7. Remove glass door before lighting pilot. (See  
Glass Frame Removal section).  
8. Visibly locate pilot by the main burner.  
9. Turn knob on gas control counterclockwise  
to “PILOT”.  
If after several tries, the pilot will not stay lit,  
turn the gas control knob to “OFF” and call your  
service technician or gas supplier.  
11. Replace glass door.  
12. Turn gas control knob to “ON” position.  
13. For RN/RP appliances turn the On/Off switch to  
“ON” position or set thermostat to desired setting.  
14. Turn on all electrical power to the fireplace.  
To Turn Off Gas To Heater  
1. Turn the On/Off switch to Off position or set the  
thermostat to lowest setting.  
3. Open control access panel.  
4. Push in gas control knob slightly and turn clock-  
2. Turn off all electric power to the fireplace if  
service is to be performed.  
wise  
to “OFF”. Do not force.  
5. Close control access panel.  
20002538  
12  
 
Always ensure that the fireplace screen is closed when  
the appliance is operating.  
When Used as a Heating Appliance  
1. This appliance is equipped with a modulating valve  
which provides variable control of heat output, from  
approximately 15,000 or 18,000 BTU/hr at the full  
counterclockwise LOW position, to 24,000, 32,000 or  
35,000 BTU/hr at the HIGH position, depending on  
your appliance. See page 3 for output of your appli-  
ance.  
Any safety screen or guard removed for servicing the  
appliance must be replaced before operating the appli-  
ance.  
Close supervision is necessary when the appliance is  
being operated near children.  
The appliance is intended for use as a gas heater  
mounted in a vented or unvented fireplace as described  
in the installation sections of these instructions. It  
should not be used for any other purpose.  
2. When used as an unvented heater, maximum benefit  
will result when the fireplace flue damper is fully  
closed.  
3. NOTE: For your safety, the appliance is equipped  
with an oxygen depletion sensor. This device senses  
the level of oxygen in the atmosphere and switches  
off the gas supply in case the level of oxygen falls  
below a safe level.  
Inspecting the Venting System  
A vented fireplace venting system is designed and con-  
structed to develop a positive flow adequate to remove  
flue gasses to the outside atmosphere. See vented  
fireplace installation instructions.  
4. The appliance may be used as a heating appliance  
only if unvented heating appliances are permitted  
by local, state and city codes. In locations that do  
not allow unvented heaters, the chimney must have  
a permanent chimney opening of not less than 29  
square inches.  
Any foreign objects in the venting system, except those  
designed specifically for the venting system, may cause  
spillage of the flue gasses into the room. In extreme  
situations, carbon monoxide poisoning or suffocation  
may occur.  
Periodic examination and cleaning of the venting  
system of the solid-fuel burning fireplace must be done  
frequently by the home owner or a qualified agency.  
Maintenance and Safeguards  
Keep the control compartment, logs and burner area  
around the logs clean by vacuuming or brushing at least  
twice a year.  
THE LOGS CAN GET VERY HOT. HANDLE ONLY  
WHEN COOL.  
VL System Maintenance  
The VL burner/control systems consist of:  
Chassis  
Always turn off gas to the pilot before cleaning. For  
relighting, refer to the lighting instructions.  
Gas Orifice  
Grate Assembly  
VL18 - four (4) decorative gas logs  
VL21 - five (5) decorative gas logs  
VL24 - six (6) decorative gas logs  
Gas Valve Assembly  
The appliance and venting system (if used) should be  
inspected before initial use and at least annually by a  
qualified field service person.  
Always keep the appliance area clear and free from  
combustible materials, gasoline and other flammable  
vapors and liquids.  
Pressure Regulator  
Never obstruct the flow of combustion and ventilation  
air. Keep the front of the appliance clear of all obstacles  
and materials.  
Most of these components require only occasional  
checkup and cleaning. Some may require adjustment. If  
repair is required, it should be performed by a qualified  
technician.  
Leave clearance of at least 36” from the front of the  
fireplace.  
In order to properly clean the burner and pilot assembly,  
turn off the gas to the unit, remove the logs exposing  
the burner and pilot assembly. Clean all foreign materi-  
als from top of burner. Check to make sure that burner  
parts are clean. Visually inspect pilot. Brush or blow  
away any dust or lint accumulations.  
Although your gas logs are very realistic in appearance,  
the fireplace must not be used for burning any solid  
fuels.  
To avoid irreparable damage to the appliance or per-  
sonal injury, matches, paper, garbage or any other  
material must not be placed or thrown on top of the logs  
or into the flames.  
To obtain proper operation, it is imperative that the pilot  
and main burner flame characteristics are steady, not  
lifting or floating. Refer to Figure 10 for proper main  
burner flame appearance and Figure 11 or 12 for proper  
pilot flame appearance.  
To avoid personal injury, do not touch hot surfaces  
when the appliance is operating. Touch only the valve  
control knob. Avoid contact with the grate feet or  
prongs, or any other part which may be very hot.  
20002538  
13  
 
Knob Shown in  
Pilot Position  
VL18  
7” - 9”  
Approx.  
Gas Valve Knob  
PILOT  
HIGH  
H I  
LO  
Piezo Ignitor  
Flame  
LG101  
VL21  
Thermocouple  
7” - 9”  
Approx.  
Pilot/O.D.S.  
Sensor  
6” - 8” Ap-  
prox.  
Pilot Assembly  
P101  
Fig. 14 Typical view of pilot burner flame.  
LO  
LO  
LG103  
VL24  
7” - 9”  
Approx.  
Piezo Ignitor  
6” - 8” Ap-  
prox.  
Thermocouple  
LO  
LG105  
Fig. 13 Typical flame patterns.  
FP1035  
Fig. 15 Correct SIT valve pilot flame.  
20002538  
14  
 
Troubleshooting  
With proper installation and maintenance, your new Gas Appliance should provide years of trouble-free ser-  
vice. If you do experience a problem, this guide will assist a CERTIFIED SERVICE PERSON in the diag-  
nosis of problems and the corrective action to be taken.  
Symptom  
Possible Causes  
Corrective Action  
A. Main shutoff valve closed  
Pilot will not light with piezo  
ignitor or match  
Make sure the shutoff valve  
located on the gas supply line  
is open  
B. Air in the gas line  
Light a match, turn valve knob  
to “PILOT” position and de-  
press. Keep match near pilot  
burner until it lights  
C. Pilot orifice plugged, not allow-  
ing gas to flow  
Replace the burner assembly  
D. No gas supply to the fireplace  
Check plumbing to see if gas  
fireplace has been hooked up  
to the gas supply line  
Propane tank empty  
A. Defective thermocouple  
Pilot will not stay lit after care-  
fully following lighting instruc-  
tions  
Replace burner assembly  
Carefully tighten fitting  
B. Thermocouple fitting not tight  
in valve  
C. Weak pilot flame  
Pilot flame must engulf ther-  
mocouple. Clean and/or  
adjust pilot for maximum flame  
impingement on thermocouple.  
(Fig. 14, 15)  
D. Defective valve  
Replace burner assembly  
E. Not enough oxygen in the  
room  
Open door and get fresh air at  
once!  
(DANGER!)  
No gas to main burner with  
pilot flame burning and valve  
turned to “high - low” range  
A. Plugged main burner orifice  
B. Defective valve  
Replace burner assembly  
Replace burner assembly  
20002538  
15  
 
1
b
2
a
c
3
d
4
12a,b  
11a,b  
6a,b  
5
16a,b  
17  
10a,b  
14  
7
8
9
15a,b  
13a,b  
2538  
CFM Corporation reserves the right to make changes in design, materials, specifications, prices and discontinue colors and products at any time,  
without notice.  
VL18/21/24 Standard Vent Free Gas Logs  
Ref. Description  
1. Complete Log Set  
1a. Top Side Logs (2)  
1b. Top Center Log  
1c. Rear Bottom Log  
1d. Front Bottom Log  
2. Bag of Lava Rock  
3. Damper Stop  
VL18  
2242104  
7398129  
--  
VL21  
VL24  
2240104  
7398129  
7398128 (2)  
2240106  
2240105  
20000198  
7540310  
3030176  
3304176  
7523184  
20002563  
3141108  
7398129  
7398128  
3141110  
3141109  
20000198  
7540310  
3030176  
3304176  
7523184  
20002582  
2242106  
2242105  
20000198  
7540310  
3030176  
3304176  
7523184  
20002579  
or  
Damper Bracket  
4. Flexible Gas Connector  
5. Elbow Fitting 1/2” NPT (F) x 3/8” Flare  
6a. Burner Tube - Natural  
20002538  
16  
 
VL18/21/24 Standard Vent Free Gas Logs (continued)  
Ref. Description  
VL18  
VL21  
VL24  
6b. Burner Assembly - LP  
Copreci Valve  
20002632  
20002629  
20002575  
7. Nut (15mm)  
8. Valve Control Knob Extension  
9. Knob  
7511168  
7536237  
7536250  
7529132  
7529133  
7532180  
7532179  
7531132  
7531133  
7511168  
7536237  
7536250  
7529132  
7529133  
7532180  
7532179  
7531132  
7531133  
7511168  
7536237  
7536250  
7529132  
7529133  
7532180  
7532179  
7531132  
7531133  
10a. Gas Valve - Copreci - Natural  
10b. Gas Valve - Copreci - LP  
11a. Gas Regulator - Natural  
11b. Gas Regulator - LP  
12a. Pilot - Natural  
12b. Pilot - LP  
SIT Valve  
13a. Gas Valve - SIT - Natural  
13b. Gas Valve - SIT - LP  
14. Piezo Ignitor  
20001354  
20001355  
52464  
20001786  
20001787  
52464  
20001786  
20001787  
52464  
15a. Pilot - Natural  
15b. Pilot - LP  
16a. Manifold Assembly - Natural  
16b. Manifold Assembly - LP  
17. Basket Grate Assembly  
20001356  
20001357  
20002534  
20002588  
20002457  
20001356  
20001357  
20002535  
20002589  
20002583  
20001356  
20001357  
20002536  
20002590  
20002544  
Contact the factory for questions concerning prices  
and policies covering replacement parts. Parts will be  
shipped at prevailing prices. Normally, all parts can be  
ordered through your CFM Corporation distributor or  
dealer.  
When ordering replacement parts, always give the fol-  
lowing information:  
•The model number of the appliance.  
•The part number.  
•The description of the part. (Refer to Replacement  
Parts, Page 16)  
•The installation date of the appliance.  
Should you need additional information, beyond what  
the dealer can furnish, contact:  
CFM Corporation  
410 Admiral Blvd.  
Mississauga, Ontario, Canada L5T 2N6  
Attention: Technical Service.  
20002538  
17  
 
Accessories  
The following accessories are available from your CFM Corporation dealer. Should you need additional information  
beyond what your dealer can furnish, contact CFM Corporation, 410 Admiral Blvd. Mississauga, Ontario, Canada L5T  
2N6, Attention: Technical Service.  
Accessory  
Model No.  
Description  
Hood  
AH3244BK (Black)  
AH3244PB (Polished Brass)  
Required to protect wall above fireplace  
and/or mantel in certain applications  
AC100  
20002538  
18  
 
LIMITED 2/20 YEAR WARRANTY  
For Majestic Fireplaces Decorative Gas Appliances  
CFM Corporation extends the warranties specified in  
MERCHANTABILITY OR FITNESS FOR A PARTICULAR  
PURPOSE), ALL OF WHICH ARE HEREBY EXPRESSLY  
INCLUDED. IN NO EVENT SHALL ANY IMPLIED WAR-  
RANTY PRESCRIBED BY LAW (NOTWITHSTANDING THE  
FOREGOING EXPRESS EXCLUSION) REMAIN IN EF-  
FECT AFTER EXPIRATIONS OF THE WARRANTIES SET  
FORTH IN PARAGRAPHS A AND B.  
A. Gas Appliances, electrical and manual compo-  
nents, glass panels, all sealants or adhesives and op-  
tional accessories (exclusive of CFM Corporation supplied  
decorative logs which are covered by a separate warranty  
under paragraph B below):  
paragraphs A and B below with respect to its Vermont  
Castings Decorative Gas Appliances (the “Gas Appliance”),  
including CFM Corporation supplied accessories and  
components referred to in those paragraphs, subject to the  
following conditions and limitations:  
(1) These warranties are extended only to the Gas Ap-  
pliance installed in the continental United States, including  
Alaska, and Canada; only if and so long as the accordance  
with the installation and operating instructions furnished  
therewith; and only if and so long as Gas Appliance is not  
removed from its original installation.  
(2). These warranties are limited to only the component  
parts manufactured and supplied by CFM Corporation. The  
use of components manufactured by others with the Gas Ap-  
pliance (except for a listed Type B venting system as defined  
in the installation instructions) could create serious safety  
hazard, may result in the denial of certification by recog-  
nized national safety agencies, and could be in violation of  
local building codes.  
(3). The Gas Appliance must be operated at all times in  
accordance with the operating instruction furnished there-  
with. The Gas Appliance is designed to burn either natural or  
propane gas only. Burning conventional fireplace fuels such  
as wood, coal, or any other solid fuel will cause damage to  
the Gas Appliance, will produce excessive temperatures and  
will result in a fire hazard.  
(4). These warranties are limited to repair, replacement or  
furnishing a replacement for sale, as specified in Paragraphs  
A and B, for a part found to CFM Corporation satisfaction,  
after examination, to be defective in materials or workman-  
ship under normal conditions, use and service.  
(5). All obligations with respect to these warranties may  
be fully discharged by CFM Corporation refunding the whole-  
sale price of a defective part.  
Within two years from the date of manufacture of the gas  
appliance, CFM Corporation will repair, or replace (at our op-  
tion) a defective part without charge.  
B. Cement or ceramic fiber log components:  
Within two years from the date of manufacture of the gas  
appliance, CFM Corporation will replace a defective part  
without charge. Within years three through twenty from the  
date of manufacture of the gas appliance, CFM Corporation  
will provide a replacement for a defective part to the hom-  
eowner, but assumes no liability for incurred labor cost.  
The foregoing warranties gives you specific legal rights  
and you may also have other rights which vary from state to  
state. Some states do not allow limitations on how long an  
implied warranty may last, so the limitation specified above  
on the duration of any implied warranty prescribed by law  
may not apply to you. Similarly, some states do not permit  
the exclusion or limitation of incidental or consequential  
damages, so the above exclusion of such damages may not  
apply to you.  
In order to obtain performance of any of the above war-  
ranty obligations, write to CFM Corporation at this address:  
CFM Corporation  
410 Admiral Blvd  
(6) Except as otherwise expressly specified in Para-  
graphs A and B. NONE OF THESE WARRANTIES COVER,  
AND CFM CORPORATION SHALL NOT BE RESPONSI-  
BLE FOR, ANY CONSTRUCTION, INSTALLATION, LABOR,  
TRANSPORTATION OR OTHER COSTS OR EXPENSES  
ARISING FROM A DEFECTIVE PART, ITS REPAIR OR  
REPLACEMENT OR OTHERWISE, NOR SHALL CFM  
CORPORATION IN ANY EVENT BE RESPONSIBLE FOR  
ANY INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAM-  
AGES. EXCEPT TO THE EXTENT PROVIDED BY LAW,  
THERE ARE NO IMPLIED WARRANTIES WITH RESPECT  
TO THE GAS APPLIANCE, ITS COMPONENTS AND AC-  
CESSORIES (INCLUDING IMPLIED WARRANTIES OF  
Mississauga, Ontario Canada L5T 2N6  
Attention: Manager of Warranty Services  
Since local building requirements may vary greatly  
throughout the country, users of CFM Corporation products  
should determine in advance whether there are any building  
code restrictions on the use of a specified product.  
CFM CORPORATION MAKES NO REPRESENTATION OR  
WARRANTY REGARDING, AND SHALL NOT BE RESPON-  
SIBLE FOR, ANY BUILDING CODE COMPLIANCE.  
The foregoing warranties give you specific legal rights and you may  
also have other rights which vary from state to state.  
20002538  
19  
 
CFM Corporation  
410 Admiral Blvd. • Mississauga, Ontario, Canada L5T 2N6  
© CFM Corporation  
 

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