Vermont Castings UVL18RP, UVL24RP, UVL18MP, UVL24MP, UVL30RP Installation And Operation Instructions Manual
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Installation and Operation
Instructions for
Vent-Free Gas Log Sets*
Models UVL18RN, UVL18MN,
UVL24RN, UVL24MN, UVL30RN,
UVL30MN (Natural Gas)
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
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 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 fire department.
INSTALLER PLEASE NOTE:
DO NOT begin installation of this gas
logset until all instructions have been
read and understood.
Models UVL18RP, UVL18MP, UVL24RP,
UVL24MP, UVL30RP, UVL30MP
(Propane)
ATTENTION
Installation and service must be performed by a qualified agency, individual,
firm, corporation, or company, experienced in the installation, repair, and
servicing of this type of gas appliance. Do
not modify, alter or tamper with any part
of this heater, control, or logs.
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.
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.
*These logsets are not for exterior use.
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Unvented Heaters, and Z21.60a-2003; CSA 2.26a-2003
Decorative Gas Appliances for Installation in
C
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SAVE THIS MANUAL FOR FUTURE REFERENCE.
W A R N I N G
Tested and listed to ANSI Z21.11.2a-2003,
Solid-Fuel Burning Fireplaces.
CERTIFIED
7412957 10/04 Rev. 11
General Information
In order to assure a safe and effective installation, only a qualified service person who is
familiar with the building codes and installation
techniques appropriate to your area may install
and service this appliance.
The Logsets have been designed and tested to operate
safely when installed according to the installation
instructions contained in this manual. Read all instructions
before starting the installation.
• The vent-free gas logset must be installed only in a
fireplace constructed of noncombustible material.
• These logsets are not for exterior use.
• This appliance is for supplemental heating only. It should
not be used as the primary heat source for a dwelling.
• The logset should be inspected before use and at least
annually thereafter. More frequent cleaning may be
necessary due to excessive lint from carpeting or bedding
material.
• In the United States, the installation and operation must
conform to local codes or, in the absence of local codes,
with the National Fuel Gas Code, ANSI Z223.1/NFPA 54,
latest edition, CSA-B149.1 Installation Code, and with the
National Electrical Code, ANSI/NFPA70 (latest edition).
State or local codes may only allow operation of this
appliance in a vented configuratio. Check your state or
local codes. In Canada, check local province for proper
use or CSA-B149. Refer to pages 7 and 8 for installation
details.
• The gas logset and its individual shutoff 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 p.s.i.g. (3.5 kPa.) The gas logset must be
isolated from the gas supply piping system by closing its
individual manual shutoff valve during any pressure
testing of the gas supply piping system at test pressures
equal to or less than 1/2 p.s.i.g. (3.5 kPa.)
• Do not, under any circumstances, burn solid fuel (wood,
paper, coal) in the fireplace where you have installed your
logset. Do not use it for cooking. Put nothing on top of the
logs.
• The logset must be compatible with its fuel. Natural gas
requires different hardware than propane. Never attempt
to use natural gas with a propane logset or vice versa.
• For a propane burning logset, the supply tank must
include a high to low gas pressure regulator. The tank
must be outdoors. Do not, under any circumstances,
locate supply tanks inside any structure.
• The fireplace must include a screen made of chain
mesh or a similar material. You must keep the screen
closed at all times during the operation of the logset; it will
protect you in the event of an explosion.
• WARNING: If the fireplace contains glass doors, they
must remain open at all times during the operation of the
logset, allowing combustion air to circulate.
• In order to avoid any possible gas leaks, apply pipe joint
compound to all non-flared, threaded connections involved
in this installation. For propane, the joint compound must
be resistant to the corrosive action of propane.
• To check for leaks, always use a soapy water solution or
a sniffer. Never test by using an open flame.
• The area around the gas logset must be free of all
combustible materials, especially gasoline or other highly
flammable, vapor producing liquids.
• Due to high temperatures, locate this logset away from
both high traffic areas and furniture and draperies.
• Children and adults alike should be aware of the high
surface temperatures; to avoid the risk of burns or ignition
of clothing they should stay away.
• Do not touch any part of the logset other than the
controls while it is operating or immediately after you turn
it off.
• Supervise young children and pets carefully when they
are in the room where the logset is operating.
• Do not place clothing or other flammable material on or
near the logset.
• Make sure that any safety screen or guard, removed
during servicing, has been replaced before you use the
logset.
• Do not, under any circumstances, install the logset in
any bedroom, bathroom, other small, enclosed room,
mobile home or recreational vehicle.
• Do not install the logset in a drafty area or use it with any
after-market blower system that may cause drafting and
consequently alter the flame pattern.
• It is imperative that you keep clear all burner areas,
control compartments and passageways for circulating air.
• Do not move the logset in any way that might dislodge
the logs from their fixed positions. If you bump the logset
check to see if you have dislodged anything.
• Provide adequate clearances around air openings into
the combustion chamber and adequate accessibility
clearance for servicing and proper operation. NEVER
obstruct the front opening of the fireplace.
• Avoid propane tank dropping below 25% full. This will
help keep soot from occurring.
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 CFM Specialty Home
Products ventless firebox or in any listed
ventless firebox enclosure certified to I.A.S.
U.S. requirements 2-97.
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 5 and 6.
This appliance operates as an unvented domestic
room heater when fitted to a masonry or factory-built
wood-burning fireplace with the flue damper closed,
or as a decorative appliance when the flue damper is
fully open. It must not be used for any other purpose
and must be fitted in a masonry or factory-built
fireplace or ventless firebox enclosure.
22
UVL Series
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
AB C D
Logset Gas Front Rear Overall Overall Pressure (w.c.) Manifold Min. Input Max. Input
Width Width Depth Height Min. Max. Pressure BTU/hr BTU/hr
18” UVL18RN
18” UVL18MN 15,000 24,000
24” UVL24RN
24” UVL24MN 18,000 35,000
30” UVL30RN
30” UVL30MN 28,500 39,000
18” UVL18RP
18” UVL18MP 10.0” 17,000 24,000
24” UVL24RP
24” UVL24MP 10.0” 18,000 35,000
30” UVL30RP
30” UVL30MP 10.0” 29,000 39,000
Natural 20¹⁄₂”18¹⁄₂”13¹⁄₂” 18” 5.5” 14.0” 3.5”
Propane 20¹⁄₂”18¹⁄₂”13¹⁄₂” 18” 11.0” 14.0”
20¹⁄₂” 17” 13¹⁄₂” 18” 5.5” 14.0” 3.5”
25¹⁄₂” 23” 13¹⁄₂” 18” 5.5” 14.0” 3.5”
20¹⁄₂” 17” 13¹⁄₂” 18” 11.0” 14.0”
25¹⁄₂” 23” 13¹⁄₂” 18” 11.0” 14.0”
Inlet Supply
17,000 24,000
24,500 35,000
25,000 39,000
11.0” 18,000 24,000
11.0” 26,000 35,000
11.0” 29,500 39,000
D
B
C
A
A. Front Width B. Rear Width
C. Depth D. Height
Fig. 1 Minimum fireplace dimensions.
FD370-2
Pressure Test Points
UVL-R Series:
captured screw-type pressure test point, therefore it
is not necessary to provide a 1/8" test point
upstream of the control.
UVL-M Series:
with a captured screw type inlet and manifold
pressure test point on the right side of the valve.
The gas control is equipped with a
The gas valve control is equipped
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.
High Elevations
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)
UVL Series
3
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 sleeping quarters, mobile
homes, or in recreational vehicles.
• 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 system
and any gas control which has been under water.
• When used as an unvented heater, always ensure 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.
THIS APPLIANCE MUST NOT BE USED WITH GLASS
DOORS IN A CLOSED POSITION .
Keep the burner and control compartment clean. See
installation and operating instructions supplied with the
heater.
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 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 setting. Provide maximum ventilation by
opening 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.
This appliance operates as an unvented domestic room
heater when fitted to a masonry or factory-built woodburning fireplace with the flue damper closed, or as a
decorative appliance when the flue damper is fully open. It
must not be used for any other purpose and must be fitted
in a masonry or factory-built fireplace or ventless firebox
enclosure.
State, provincial or local codes may only allow operation
of this appliance in a vented configuration. Check your
state or local codes. If unvented room heaters are not
permitted, 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).
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.
Proposition 65 Warning: Fuels used in gas,
woodburning 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
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 follow 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.
2. After opening the carton, refer to
Parts
on Page 17 and 18, and remove the various
Replacement
parts.
Report to your dealer if any parts were damaged in
shipment.
• CFM Specialty Home Products warranty
will be voided by, and CFM Specialty Home
Products disclaims any responsibility for,
the following actions:
• Installation of any damaged appliance.
• Modification of the appliance.
• Installation other than as instructed by
CFM Specialty Home Products.
• Improper positioning of the gas logs.
• Installation and/or use of any component
part or accessory not manufactured or
approved by CFM Specialty Home Products, not withstanding any independent
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.
This heater shall not be installed in a confined
space unless provisions are made for adequate
combustion and ventilation air.
WARNING!
Improper installation, adjustment, alteration,
service or maintenance can cause injury or
property damage. Refe to this manual for
assistance or additional information, consult a
qualified installer, service agency or the gas
supplier.
44
UVL Series
Installation Requirements
Fresh Air Requirements for
Combustion and Ventilation
WARNING
This heater must have fresh air for proper
operation. 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.
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 properly and safely. Exhaust fans,
clothes dryers, fireplaces, and other fuel burning
appliances all 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 vent-free logsets have specific fresh air requirements. 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.
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.
First, determine which classification defines the
intended installation space.
Unusually Tight Construction
You must provide additional fresh air if the space
falls into this classification.
struction
a. Walls and ceilings exposed to the outside atmosphere have a continuous water vapor barrier with a
rating of one perm or less, with openings gasketed
or sealed,
b. weather stripping has been added on openable
windows and doors
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, between wall panels, at penetrations for
plumbing, electrical, and gas lines, and at all other
openings.
is defined as construction wherein:
and
and
Unusually Tight Con-
If your home meets all of the above criteria, you
must provide additional fresh air for the appliance as
detailed on Page 6.
If your home does not meet the above criteria, follow
the procedure below.
Determine If You Have a Confined or
Unconfined Space
Use the following formula to determine if you have a
confined or unconfined space.
Space is defined as the room in which you will install
the heater, plus any adjoining rooms with doorless
passageways or ventilation grilles between the
rooms. 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 (4.8m
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 appliances
are installed, through openings not furnished with
doors, are considered a part of the unconfined
space.
1. Determine the volume of space (length x width x
height). Include adjoining rooms connected by
doorless passageways or ventilating grilles.
Example:
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
cubic feet.
2. Divide the volume of space by 50 cubic feet. The
result is the maximum BTU/hour the space can
support.
Example:
76,800 BTU/hour.
3. Add the BTU/hour ratings of all fuel-burning
appliances installed in the same space, including the
following:
Gas Water Heater Gas Furnace
Gas Fireplace Logs Vent-free Gas Heater
Vented Gas Heater* Other Gas Appliances*
* Do not include Direct-vent appliances as these use
outdoor air for combustion and vent to the outdoors.
3
per Kw) of the aggregate (total) input
A room that is 18’ x 12’ x 8’ has a volume
3840 cubic feet divided by 50 = 76.8 or
UVL Series
5
Example:
Gas Range 55,000 BTU/hour
Vent-Free LogSet +
25,000 BTU/hour
Total 80,000 BTU/hour
4. Compare the maximum BTU/hour rating the space
can support with the total BTU/hour used by the
appliances.
Example: 76,800 BTU/hour the space can support
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
appliances.
The space is considered to be
Confined Space.
Additional air must be provided to meet the requirements on the vent-free gas log set.
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 CSAB149.1 Installation Code (Series).
A confined space may be ventilated in two ways:
A. Open up 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
being at least 3”. One grille must be within 12” of the
ceiling; the other within 12” of the floor. (If the total
exceeds 100,000 BTU/hour, additional grilles will be
needed.)
B. Vent the room directly to the outdoors. (Provide
one square inch of opening for each 4,000 BTU/hr.)
For further information on ventilation guidelines and
sizing specifications, follow the National Fuel Gas
Code/NFPA 54/ANSI Z223.1/NFPA 54, Section 5.3.
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.
WARNING
This heater shall not be installed in a confined
space or unusually tight construciton unless
provisions are made for adequate combustion
and ventilation air.
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, 1992, Sections 5.3, or applicable
codes.
WARNING: Before installing the gas log set in a
solid-fuel burning fireplace, the chimney flue and
firebox must be cleaned of soot, creosote, and loose
paint by a qualified chimney cleaner.
OPTION 1 Vents to
Adjoining
Room
Fig. 2 Ventilation options for confined spaces.
OPTION 3 Vents to
Adjoining
Room
OPTION 2 Remove Door to
Adjoining Room
12”
12”
VO370-2
66
UVL Series
Installation Instructions
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 gas logset.
DO NOT burn solid fuels in a fireplace where
an unvented gas room heater or logset is
installed.
Any outside air ducts and/or ashdumps in the
fireplace must be permanently closed at time
of appliance installation.
Preparing the Fireplace
Gas Line Preparation
Before connecting the appliance, turn off all gas
appliances. 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, or
CSA B-149.1. Use LP gas-resistant pipe compound
to seal threaded joints.
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.
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 manufactured fireplaces.
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)
Do not install this appliance in bedrooms or
bathrooms.
WARNING: Any change to this heater or its
controls can be dangerous.
Hole in
Outer
Casing
Ceramic
Knockout
Gas Access
Holes
Electrical
Access
Fig. 3 Gas line installation - factory built fireplace.
Outside Air Access
1”
Gas
Supply
Line
Repack
Insulation
760
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 mortar. The gas supply line should also have a
valve within easy reach of the appliance. Use only
1/2” rigid pipe or approved 3/8” copper tubing. (Do
not use cast-iron pipe).
Clean the fireplace and chimney (if used) of any
ashes, soot, creosote, or obstruction. This will
minimize any smell from the fireplace. We recommend cleaning by a chimney sweep.
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. (Fig. 4) (If the
damper stop cannot be installed, the installer should
install a permanent damper stop that will keep the
damper open a minimum of 1¹⁄₂”).
UVL Series
7
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