Installation and Operating Instructions for
Gas Log Heaters
Models: UVHK23MP, UVHK29MN,
UVHK31MP, UVHK36MN
Models with “N” after the model number use natural gas; models with “P” after the model number use propane (LP) gas.
This appliance operates as an unvented room heater certified under ANSI Z21.11.2b-2004 when fitted
to a solid fuel burning masonry or factory built fireplace with the flue damper closed. It also operates
as a decorative appliance under ANSI Z21.60b-2001.
CSA 2.26b-2001, when fitted to a solid fuel burning
masonry or factory built fireplace with the flue
damper open. When used as a decorative appliance, the use of a thermostat is not allowed. State
or local codes may only allow operation of this appliance in a vented configuration. Check your state
or local codes.
Charred Oak Logs
Split Bark Logs
WARNING
If the information in this manual is not followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
FOR YOUR SAFETY
— Do not store or use gasoline or other flammable 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 electric switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instruc-
tions.
• If you cannot reach your gas supplier, call the fire department.
—Installation and service must be performed by a qualified installer, service agency or the gas
supplier.
This is an unvented gas-fired heater. It uses air
(oxygen) from the room in which it is installed.
Provisions for adequate combustion and ventilation air must be provided. Refer to Section Provisions For Adequate Combustion and Ventilation
Air - Page 6.
This appliance may be installed in an aftermarket,
permanently located, manufactured (mobile) home,
where not prohibited by local codes.
This appliance is only for use with the type of gas
indicated on the rating plate. This appliance is not
convertible for use with other gases.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
20008056 1/07 Rev. 2
Table of Contents
Important Information ..................................................................................................................3
Important Safeguards ...............................................................................................................
WARNING: Any change to this heater or its controls can be dangerous.
In the Commonwealth of Massachusetts, all gas fitting and
installation of this heater shall only be done by a licensed
gas fitter or licensed plumber.
• Due to high temperatures, the appliance should be lo-
cated out of traffic and away from furniture and draperies.
• The appliance area must be kept clear and free from com-
bustible materials, gasoline and other flammable vapors and
liquids.
• Children and adults should be alerted to the hazard of
high surface temperatures and should stay away to avoid
burns or clothing ignition.
• Installation and repair must be done by a qualified ser-
vice person or gas appliance installer.
• The appliance must be inspected before use and at least
annually by a professional service person. More frequent
cleaning may be required due to excessive lint from carpet
ing, bedding material, dust and pet hair, etc. It is important
that the control compartment, burners and circulating air
passageways of the appliance be kept clean.
• DO NOT place clothing or other flammable material on or
near the appliance.
• This appliance must only be used with pressures at the inlet
as shown in Table 1, Page 12.
• The installation must conform with local codes or, in the
absence of local codes, with the NATIONAL FUEL GAS CODE,
ANSI Z223.1/NFPA 54, latest edition.
• Any safety screen or guard removed for servicing an ap-
pliance must be replaced prior to operating the heater.
• The appliance and its appliance main gas valve must be
disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess of
1/2 PSIG (3.5 kpa).
• The appliance must be isolated from the gas supply piping
system by closing its equipment shut-off valve during any testing of the gas supply piping system at test pressures equal to or
less than 1/2 PSIG.
• DO NOT use this heater in recreational vehicles, bedrooms
or bathrooms.
• If this is the ONLY gas appliance, we recommend a
minimum 200 pound cylinder with a fill gauge. Use of a 100
pound cylinder is not recommended. Other household gas
appliances may require the tank size to be larger. Do not
operate the vent-free heater if the fuel level in the propane
tank is below 1/4 full. Use only with two-stage regulator.
• DO NOT use this heater if any part of it has been under
water. Immediately call a qualified technician to inspect the appliance and replace any part of the control system and any gas
control which has been under water.
• Any outside air ducts in the fireplace shall be permanently
closed at the time of appliance installation.
• Check local, state or city codes to determine if unvented
heaters are permitted. If unvented heaters are not permitted, the fireplace chimney damper must be fixed at a
minimum dimension of 34 sq. inches. This must be accomplished by a clamp or screw on the chimney damper
to stop at the minimum vent area. The fireplace must also
have a minimum vent opening of 34 sq. ins., (Fig. 1)
• This appliance may be installed in an after-market* manu-
factured “mobile” home where not prohibited by state or local
codes.
• OUTSIDE AIR DAMPER OR ASH DUMP (IF PRESENT)
MUST BE CLOSED AND SEALED.
• Young children should be carefully supervised when
they are in the same room with the appliance.
• An unvented room heater having an input rating of more
than 10,000 btu per hour shall not be installed in a bedroom or bathroom.
• Keep the burner and control compartment clean. See main-
tenance instructions in this manual.
•Never use the heater at a setting between the positions
shown on the control knob as this can result in improper
combustion and excessive carbon monoxide emissions.
• The appliance must be operated with glass doors fully
-
open.
• DO NOT operate ceiling fan in room or area with logs when
logs are on.
• Solid fuels (i.e. wood, paper, trash) shall not be burned in a
masonry or UL 127 factory-built fireplace in which an unvented
room heater is installed.
*After-market: Completion of sale, not for purpose of re-sale
from the manufacturer.
WARNING: This appliance is for installation only
in a solid-fuel burning masonry or UL 127 factory-built fireplace or in a listed ventless firebox
enclosure. It has been designed certified for these
installations. Exception: DO NOT install this appliance in a factory-built fireplace that includes instructions stating it has not been tested or should
not be used with unvented gas logs.
WARNING: Do not allow fans to blow directly into
the fireplace. Avoid any drafts that alter burner
flame patterns.
WARNING: Do not use a blower insert, heat exchanger insert or other accessory not approved for
use with this heater.
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 defects
and other reproductive harm.
California Health & Safety Code Sec. 25249.6
320008056
WARNING: If the area in which the heater may
be operated is smaller than that defined as an
unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods
described in the National Fuel Gas code, ANSI
Z223.1/NFPA 54, Section 5.3, (or applicable local
codes).
The National Fuel Gas Code, ANSI Z223.1/NFPA 54
defines a confined space as a space whose volume
is 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 and an unconfined
space as a space whose volume is not less than 50
cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of
the aggregate input rating of all appliances installed
in that space. Rooms communicating directly with
the space in which the appliances are installed,
through openings not furnished with doors, are considered a part of the unconfined space.
Important Safeguards
WARNING: 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 and eye/lung irritation. This is a
normal and temporary occurrence.
Although your gas logs are very realistic in appearance,
it is not a real wood-burning fireplace and must not be
used for burning rejected material.
To avoid irreparable damage to the appliance or personal in
jury; matches, paper, garbage or any other material must not
be placed or thrown on top of the logs or into the flames.
To avoid personal injury, do not touch hot surfaces when
the appliance is operating.
Touch only the piezo button and control knob. Avoid contact
with the front screen, canopy or any other part which will be
very hot.
Always ensure that the fireplace screen is in place when
the appliance is operating and, unless other provisions
for combustion air are provided, the screen shall have
opening(s) for introduction of combustion air.
Close supervision is necessary when the appliance is being operated near children.
Do not use to cook food.
If this is the ONLY gas appliance, we recommend a minimum
200 pound cylinder with a fill gauge. Use of a 100 pound
cylinder is not recommended. Other household gas appliances may require the tank size to be larger. Do not operate
the vent free fireplace if the fuel level in the propane tank is
below 1/4 full.
-
WARNING: The glowing ember base and all the
logs are manufactured from bonded ceramic
fiber. This is a commonly used material in industry worldwide. In the event of the logs and base
being removed, care should be taken not to damage the bonded material.
Intentional misuse of, or deliberately fragmenting, the material could lead to inhaling fibers and
be injurious to health.
This appliance is intended to be used only for supplemental
heat. Do not use it routinely as a primary heat source.
Continuous operation could produce excessive humidity depending on construction characteristics and outdoor temperatures (below 20°F). Over time, this could cause condensation
to form and damage wall structures and exterior paint.
WARNING: Failure to keep primary air
opening(s) of the burner(s) clean may result in
sooting and property damage.
4
20008056
Installation Requirements
A
B
D
C
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
A B C D BTU/hr.
Logset Gas Front Rear Overall Overall Pressure (w.c.) Manifold Low Med. High Air Shutter
Input ratings are shown in BTU per hour and are
certified without deration from elevations up to
4,500 feet (1,370m) above sea level.
Nuisance outages may occur at altitudes above
4,500 feet (1,370m) if dirt, dust, lint and/or cobwebs are allowed to accumulate on burner and/or
ODS pilot. Monthly inspection and cleaning is
recommended for altitudes above 4,500 feet
(1,370m)
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.
In Canada, please consult provincial and/or local
authorities having jurisdiction for installations at
elevations above 4,500 feet (1,370m)
Inlet Supply
FD370-2
Pressure Test Points
The gas control is equipped with a captured screw-type
pressure test point, therefore it is not necessary to provide a 1/8” test point upstream of the control.
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 carpet 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.
WARNING
This appliance is for installation in a solid-fuel
burning masonry, fireplace with a working flue,
a U.L.-127 listed manufactured solid-fuel burning fireplace, in any Majestic ventless firebox,
or in any listed ventless firebox enclosure
certified to I.A.S. U.S. Requirement 2-97 or
ANSI Z21.91.
NOTICE
This is an unvented gas-fired heater. It uses air
(oxygen) from the room in which it is installed.
Provisions for adequate combustion and ventilation air must be provided. Refer to Pages 7 and 8.
520008056
Model
Wood Burning Fireplace Series UVHK36MN UVHK31MP UVHK29MN UVHK23MP
BR/BC36, BR/BC36i ★★X X
SHR36
BR/BC42, BR/BC42i X X X X
SHR42A/48/52 X X X X
Vent Free Fireplace Series UVHK36MN UVHK31MP UVHK29MN UVHK23MP
UVDC36, UVDR36 X X X X
UV36 ★★X X
UVDC42, UVDR42 X X X X
UVSRC36A X X X X
UVSRC42A X X X X
CVLS18 - - X X
SLS18 - - X X
CVLS24 X X X X
SLS24 X X X X
CVLS30 X X - SLS30 X X - -
★ with SLS24 and CVLS24 ONLY
★ ★ X X
WARNING: Refer to the above table to ensure that your log set is certified to be used in the CFM Corporation
Vent-Free firebox you have purchased. BR/BC and SHR models are designed as wood/solid fuel fireplaces. These
wood-burning models must be installed as a wood-burning unit including chimney and termination cap before the
installation of the vent-free logs.
6
20008056
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