Monessen Hearth LLCF36, LSTF36, LRCF36 User Manual
LO-RIDER
DESIGNER VENT-
FREE FIREBOXES
INST ALLATION AND OPERA TING
INSTRUCTIONS
MODELS: LSTF36, LPF36, LRCF36, LLCF36
If the information in this manual is not followed exactly , a fi re
or explosion may result causing property damage, personal
injury or loss of life.
WARNINGS
For use only with a listed gas-fi red
unvented decorative room heater
not to exceed 40,000 BTU/hr. DO
NOT BUILD A WOOD FIRE.
Carefully review the instructions
supplied with the decorative
type unvented room heater
for the minimum fi replace size
requirement.
DO NOT INST ALL AN APPLIANCE
IN THIS FIREBOX UNLESS THIS
FIREBOX MEETS THE MINIMUM
DIMENSIONS REQUIRED FOR
THE INSTALLATION.
READ AND SAVE THESE INSTRUCTIONS
– Do not store or use gasoline or other fl ammable 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
fi re department.
– Installation and service must be performed by a qualifi ed
installer, service agency or the gas supplier.
WARNING: Improper installation, adjustment, alteration, service
or maintenance can cause injury or property damage. Refer to
this manual. For assistance or additional information consult
a qualifi ed installer, service agency, or the gas supplier.
CONTENTS
IMPORTANT SAFETY INFORMATION ................................................................................................. 3
PLANNING the INSTALLATION ............................................................................................................ 4
LOCATION of FIREBOX ........................................................................................................................ 5
CLEARANCES and HEIGHT REQUIREMENTS ................................................................................... 7
FIREPLACE FRAMING ........................................................................................................................ 9
FIREPLACE INSTALLATION ..............................................................................................................11
GAS LINE INSTALLATION .................................................................................................................. 14
CANOPY INSTALLATION ................................................................................................................... 15
WIRING to JUNCTION BOX ............................................................................................................... 16
GLASS CLEANING ........................................................................................................................... 16
ILLUSTRATED PARTS LIST ............................................................................................................... 17
USING OPTIONAL OUTSIDE AIR KIT ................................................................................................18
WARRANTY .....................................................................................................................BACK COVER
2 79D0004
IMPORTANT SAFETY INFORMATION
INSTALLER
Please leave this manual with the appliance.
IMPORTANT
Read these instructions carefully before installing this vent-free fi rebox.
• Improper installation or use of the fi rebox can cause serious injury or death from
fi re, burns, explosion or carbon monoxide poisoning.
• Do not allow fans to blow directly into the fi replace. Avoid drafts that alter burner
fl ame patterns.
• Do not use a blower insert, heat exchanger insert or other accessory, not approved
WARNING
for use with this fi rebox where applicable.
1. Due to high temperatures, the firebox should be
located out of traffic and away from furniture
and draperies.
2. Children and adults should be alerted to the hazard
of high surface temperature and should stay away
to avoid burns or clothing ignition.
3. Young children should be carefully supervised
when they are in the same room with the firebox.
4. Do not place clothing or other flammable material
near the fireplace when the firebox is in use.
5. Any safety screen or guard removed for servicing,
must be replaced prior to operating a heater within
the firebox.
6. Installation and repair should be done by a qualified
service person.
7. To prevent malfunction and/or sooting, an unvented
gas heater/firebox should be cleaned at least
annually by a professional service person. More
frequent cleaning may be required due to excessive
lint from carpeting, etc. It is imperative that
control compartments, burners and circulating air
passageways be kept clean.
8. The installation must conform with local codes or, in
the absence of local codes, with the National Fuel Gas
Code, ANSI Z223.l/NFPA 54.
9. This unit complies with Z21-91 Ventless Firebox
Enclosures for gas-fired unvented decorative room
heaters.
10. Do not install the firebox in a bathroom or bedroom.
OWNER
Please retain this manual for future reference
11. Avoid any drafts that alter burner flame patterns. Do not
allow fans to blow directly into fireplace. Do not place
a blower inside burn area of firebox. Ceiling fans may
create drafts that alter burner flame patterns. Sooting
and improper burning will occur.
12. Caution: Candles, incense, oil lamps, etc. produce
combustion byproducts including soot. Vent-free appliances will not filter or clean soot produced by these types
of products. In addition, the smoke and/or aromatics
(scents) may be reburnt in the vent-free appliance which
can produce odors. It is recommended to minimize the
use of candles, incense, etc. while the vent-free appliance
is in operation.
13. Keep room area clear and free from combustible
materials, gasoline and other flammable vapors and
liquids.
14. During manufacturing, fabricating and shipping, various
components of this appliance are treated with certain
oils, films or bonding agents. These chemicals are not
harmful but may produce annoying smoke and smells
as they are burned off during the initial operation
of the appliance; possibly causing headaches 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 the highest setting. Provide maximum
ventilation by opening windows or doors to allow odors
to dissipate. Any odors remaining after this initial
break-in period will be slight and will disappear with
continued use.
15. Always have a fireplace screen in place when the
appliance is in operation and, unless other provisions
for combustion air are provided, the screen shall have an
opening(s) for induction of combustion air.
.
79D0004 3
GENERAL INSTALLATION INFORMATION
DO NOT ATTEMPT TO BURN SOLID WOOD FUELS, VENTED GAS LOG SETS, OR ANY OTHER COMBUSTIBLE IN THIS UNVENTED FIREBOX. ALSO, DO NOT INSTALL A VENT-FREE GAS LOG SET IN THIS
FIREBOX IF THE MINIMUM CLEARANCE AND HEIGHT REQUIREMENTS OF THE LOG SET ARE TOO
LARGE FOR THE FIREBOX.
The LSTF36, LPF36, LRCF36, and LLCF36 Series are vent-free fireboxes. They feature a self-contained heat-circulating
system. These units also feature a 2-in-1 flexible-face system (except for corner unit) that converts the circulating system
into a radiant system in seconds.
This installation manual will enable you to obtain a safe, efficient, and dependable installation of your vent-free
fireplace system.
Do not alter or modify the firebox or its components under any circumstances. Any modification or alteration of the firebox
system, including but not limited to the firebox and accessories, may void the warranty, listings and approvals of this system
and could result in an unsafe and potentially dangerous installation.
BEFORE YOU START:
CHECK YOUR PACKING LIST TO VERIFY THAT ALL LISTED PARTS HAVE BEEN RECEIVED.
ALSO INSPECT THE CONTENTS FOR SHIPPING DAMAGE AND IMMEDIA TEL Y INFORM YOUR DEALER
IF ANY DAMAGE IS FOUND.
You should have the following:
1. Vent-Free Gas Firebox
2. One (1) - 36" Canopy (LRCF36/LLCF36)
One (1) - 20" Canopy (LRCF36/LLCF36)
Two (2) - 36" Canopys (LSTF36/LPF36)
3. Installation and Operating Instructions
4. Five (5) drywall spacers
ITEMS REQUIRED FOR INSTALLATION
TOOLS: BUILDING SUPPLIES:
Phillips screwdriver Square Framing materials
Hammer Piping complying with local codes Wall finishing materials
Saw and/or saber saw Tee joint Caulking material (noncombustible)
Level Pipe wrench Fireplace surround materials (noncombustible)
Measuring tape Pliers
Electric drill and bits Pipe sealant approved for use
with propane/LPG (resistant to sulfur compounds)
Refer to the installation instructions provided with the log sets for items required for log set installation.
Illustrations shown in this manual refl ect “typical” installations with nominal
dimensions and are for design and framing reference only . Actual installations may
vary due to individual design preferences. However, always maintain minimum
clearances to combustible materials and do not violate any specifi c installation
NOTICE
requirements.
4 79D0004
PLANNING THE INSTALLATION
In planning the installation for the appliance it is necessary to determine where the unit is to be installed and whether optional
accessories are desired. Gas supply piping should also be planned. The following steps represent the normal sequence of
installation. Each installation is unique, however, and might require a different sequence.
1. Position firebox prior to framing or into prepared framing.
2. Field wire main power supply to circulating models with fan kit. (Electrical connections should only be performed
by an experienced, licensed/certified tradesman).
3. Plumb gas line. (Gas connections should only be performed by an experienced, licensed/certified tradesman).
4. Install vent-free gas log heater per the instructions provided with the vent-free gas log heater.
5. Complete finish wall material and surround to your individual taste.
42 3/16"
39 9/16"
23 13/16"
22 5/16"
TOP
5 5/8"
12 3/8"
11 7/8"11 7/8"
11 3/8"
3 3/16"
2 5/8"
5 5/8"
1 3/4"
35 15/16"
FRONTREAR
28 1/16"
39 9/16"
"
Figure 1 - Firebox Dimensions
27 3/4"
1 13/16"
35 9/16"
27 3/4"
"
23 13/16"
OPEN
SIDE
"
"
79D0004 5
LOCATION OF FIREBOX
Carefully select the best location for installation of your vent-free firebox. The following factors should be taken into consideration.
• Clearance to side wall, ceiling, woodwork, and windows. Refer to “CLEARANCES and HEIGHT REQUIREMENTS”
section below and on pages 8 and 9. Minimum clearances to combustibles must be maintained.
• Location must not be affected by drafts caused by kitchen exhaust fans, ceiling fans, return air registers for forced air
furnaces/air conditioners, windows, or doors.
• Installation must provide adequate ventilation and combustion air.
• DO NOT INSTALL THIS FIREBOX IN A BATHROOM.
• This firebox enclosure is approved for bedrooms on the condition that the unvented room heater does not exceed 10,000
BTUs input and the room is properly sized for combustion air.
• Location should be out of high traffic or windy or drafty areas.
• DO NOT INSTALL WHERE CURTAINS, FURNITURE, CLOTHING OR OTHER FLAMMABLE OBJECTS
ARE LESS THAN 36" FROM FRONT OF HEATER.
• Never obstruct the front opening of the vent-free firebox or restrict the flow of combustion and ventilation air.
• Minimize modifications to existing construction. Refer to Figure 2 for location suggestions.
• Do not install in the vicinity where gasoline or other flammable liquids may be stored. The vent-free firebox must be
kept clear and free from these combustible materials.
CORNER RIGHT
CORNER LEFT
PENINSULA
CORNER LEFT
SEE-THROUGH
CORNER RIGHT
Figure 2 - Suggested Firebox Locations
6 79D0004
CLEARANCES and HEIGHT REQUIREMENTS
CLEARANCES and HEIGHT REQUIREMENTS
Ensure that minimum clearances shown in Figures 3 through 7 are maintained. Left and right clearances are determined
when facing the front of the firebox.
Follow these instructions carefully to ensure safe installation. Failure to follow these requirements may create a
fire hazard.
1. Sidewall Clearances — The clearance from the inside of the appliance to any combustible adjacent wall should not
be less than 2
2. Ceiling Clearance — The ceiling must be at least 42" from the top of the firebox opening (bottom of hood). Refer
to Figure 3.
3. Back Wall Clearance — The appliance may be placed against a combustible back wall.
4. Parallel Wall Clearance — The clearance from the opening of the firebox to any wall that is parallel to the opening
should not be less than 36" (LSTF36 and LPF36 models only). Refer to Figure 4.
7
/8". Refer to Figure 3.
42"
36"
55/8"
Figure 3 - Sidewall and Ceiling Clearances
C
B
A
Figure 5 - Minimum Hearth Dimensions
79D0004 7
See-Thru 33 3/16" 27 3/4" 21 15/16"
Corner 35 5/16" 27 3/4" 21 15/16"
Peninsula 35 5/16" 27 3/4" 21 15/16"
Figure 4 - Parallel Wall Clearance
(LSTF36 and LPF36 Models Only)
Minimum Hearth Dimensions
AB C
CLEARANCES and HEIGHT REQUIREMENTS
5. Mantel clearances — The canopy supplied with
the unit must be installed. If a combustible mantel
is installed, it must meet the clearance requirements
detailed in Figure 6.
2.5"
6. Floor clearance — This fi rebox hearth opening
(inter-chamber fl oor) must be installed
1
at least
/ 2" above any combustible
fl ooring material or, the fi rebox hearth
may be installed fl ush with the fl oor
if noncombustible material such as
slate or marble is installed between
the base of the fi rebox and the com-
bustible fl ooring. The firebox may be
installed directly on a combustible
floor or raised on a platform of an
appropriate height. Do not place firebox on carpeting, vinyl, or other soft
floor coverings. It may, however, be
Figure 6 a&b - Minimum Mantel Clearances for Canopy
placed on a flat wood, plywood, particle board, or other hard surfaces. Be
sure firebox rests on a solid continuous floor or platform with
appropriate framing for support so that no cold air can enter room
from under the firebox. Refer to Figure 8.
NOTE: The combustible area above the facing must
not protrude more than 3/4" from the facing. If it does,
it is considered a mantel and must meet the mantel
requirements listed in this manual.
Figure 6c - Minimum Mantel Clearances
12"
10"
8"
6"
17"
13"
24"
22"
20"
Canopy
and Wide Profi le Canopy
FIREPLACE
HOOD
TOP VIEW
2.50
1.00
3.00
COMBUSTIBLE
1.50
5.00
5.63
12"
8"
14"
8"
Wide Profi le
Canopy
MATERIAL
AREA
WALL
3.50
4.50
45°
Combustible Material
Noncombustible
Material
1/2"
MIN.
Figure 7 - Floor Clearance above Combustible
Flooring Material
Figure 8 - Floor Clearance above Noncombustible
Flooring Material
14"
MIN.
8 79D0004
0"
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