Superior VFST-27VSN-2, VFST-27VSP-2 User Manual
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
US
INSTALLATION AND
OPERATING INSTRUCTIONS
STANDARD SERIES
Unvented See-Through Gas Log Room Heaters
P/N 903588 REV. G 12/2007
MODELS
VFST-27VSN-2 VFST-27VSP-2
FOR USE ONLY WITH DECORATIVE TYPE UNVENTED ROOM
HEATERS.
DO NOT BUILD A WOOD FIRE.
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 QUALIFIED INSTALLER, SERVICE AGENCY OR THE
GAS SUPPLIER.
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 or liquids in the vicinity
of this or any other appliance.
FOR YOUR SAFETY: What to do if you smell gas:
• DO NOT light any appliance.
• DO NOT touch any electrical switches.
• DO NOT use any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone.
Follow your gas suppliers instructions.
• If your gas supplier cannot be reached, call the
fire department.
Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
NOTE: DIAGRAMS & ILLUSTRATION NOT TO SCALE.
WARNING: DO NOT BURN WOOD OR OTHER MATERIAL IN
THESE APPLIANCES.
CAREFULLY REVIEW THE INSTRUCTIONS SUPPLIED WITH
THE DECORATIVE TYPE UNVENTED ROOM HEATER FOR
THE MINIMUM FIREPLACE SIZE REQUIREMENT.
DO NOT INSTALL THE APPLIANCE IN THIS FIREBOX, UNLESS THIS FIREBOX MEETS THE MINIMUM DIMENSIONS
REQUIRED FOR THE INSTALLATIONS.
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 Combustion
and Ventilation Air Section, Page 3.
Due to high temperatures, the appliance should be located out
of traffic and away from furniture or draperies.
Do not place clothing or other materials on or near this
appliance.
IMPORTANT: READ THESE INSTALLATION INSTRUCTIONS
CAREFULLY BEFORE INSTALLING OR TRYING TO OPERATE
THIS HEATER.
1
TABLE OF CONTENTS
General Information......................... page 2
Inventory ......................................... page 2
Tools Required ................................ page 2
Important Safety Information .......... page 2
Codes .............................................. page 3
Combustion and Ventilation Air ....... page 3
Preinstallation.................................. page 4
Clearances ....................................... page 4
Installation....................................... page 6
Gas Pressure Check......................... page 6
Assembling the Logs ....................... page 7
Flame Appearance ........................... page 7
Cleaning and Servicing .................... page 8
Replacement Parts .......................... page 8
Troubleshooting Guide .................... page 9
Operating Instructions..................... page 10
Replacement Parts List.................... page 12
GENERAL INFORMATION
These See-Through Unvented Gas Log Room
Heaters incorporate unitized ceramic fiber logs
which glow realistically when the heater is
operating.
These log heaters are either thermostatic
(T-stat) or manually controlled. The control
knob is set to the desired position, which
maintains a continuous gas burning rate.
A spark ignition system (piezo) allows the gas
pilot to be lit without the use of matches or
batteries and permits operation of the heater
during a power outage.
These heaters are fitted with a specially designed pilot utilizing an oxygen depletion sensor (ODS) which responds to the amount of
oxygen available in the room and shuts the
heater off before the oxygen level drops below
18%.
The pilot can be relit only when fresh air is
available. Refer to the Combustion and Ventilation Air section.
WARNING: THIS APPLIANCE IS FOR INSTALLATION IN A SOLID FUEL BURNING FIREPLACE WITH A WORKING FLUE
OR AN APPROVED VENTLESS FIREBOX
ENCLOSURE ONLY.
Minimum Fireplace (Firebox) Size
Height Depth Width
16" 18" 28" Front
Table 1
Do not install these See-Through Unvented
Gas Log Room Heaters in a bedroom or a
bathroom as all units exceed maximum allowable BTU/hr input of 10,000.
Check the inventory list to be sure that you have
all the necessary parts in usable condition. Also
check for concealed damage.
WARNING: FAILURE TO INSTALL THESE
LOGS EXACTLY AS DETAILED IN THIS
INSTRUCTION MANUAL MAY RESULT IN
SOOTING AND MAY RESULT IN VOIDING
PRODUCT WARRANTIES.
Inventory
Unvented gas log room heater
Bag of decorative volcanic rock
Ceramic fiber logs
Installation and Operating Instructions
Tools and Supplies Normally Required
External regulator (Propane models only)
Manual shut-off valve
Sediment trap
Piping complying with local codes
Pipe compound
Pipe wrench
Tee joint
Screwdriver
IMPORTANT SAFETY INFORMATION
INSTALLER: PLEASE LEAVE THESE INSTRUCTIONS WITH THE OWNER.
OWNER: PLEASE RETAIN THESE INSTRUCTION FOR FUTURE REFERENCE.
WARNING: ANY CHANGE TO THIS ROOM
HEATER OR ITS CONTROLS CAN BE DANGEROUS. IMPROPER INSTALLATION OR
USE OF THIS HEATER CAN CAUSE SERIOUS INJURY OR DEATH FROM FIRE,
BURNS, EXPLOSION OR CARBON MONOXIDE POISONING.
Carbon Monoxide Poisoning: Early signs of
carbon monoxide poisoning are similar to the
flu with headaches, dizziness and/or nausea.
If you have these signs, obtain fresh air immediately. Have the Unvented Gas Heater
serviced as it may not be operating correctly.
• Due to high temperatures, the heater should
be located out of traffic and away from furniture
and draperies.
• Children and adults should be alerted to the
hazard of high surface temperature and should
stay away to avoid burns or clothing ignition.
• Young children should be carefully supervised when they are in the same room with the
heater.
• Do not place clothing or other flammable
material on or near the heater.
• Any safety screen or guard removed for
servicing the heater must be replaced prior to
operating the heater.
• Installation and repair should be done by a
qualified service person. The heater should be
inspected before use and at least annually by a
professional service person. More frequent cleaning may be required due to excessive lint from
carpeting, bedding material, etc. It is important
that control compartments, burners and circulating air passageways of the heater be kept clean.
UNVENTED SEE-THROUGH GAS LOG ROOM HEATER TECHNICAL CHART
BTU/HR Regulator Gas Inlet Valve
Model No. High Gas Type Ignition Pres. Setting Pressure Operation
VFST-27VSN 34,000 Natural Piezo 5" w.c. Max. 10.5" w.c. Manual (Millvolt)
Min. 6" w.c.
VFST-27VSP 34,000 Propane/LPG Piezo 10" w.c. Max. 13" w.c. Manual (Millvolt)
Min. 11" w.c.
Note: Test gage connections are provided on the front of the gas control valve (identified A for the manifold side and E for inlet pressure).
2
NOTE: DIAGRAMS & ILLUSTRATION NOT TO SCALE.
• Allow the heater to cool before servicing.
Always shut off the gas to the heater while
performing service work.
• Do not install the heater in a bedroom or
bathroom.
• The installation must conform with local
codes or, in the absence of local codes with the
National Fuel Gas Code, ANSI Z223.1.
• The heater and its individual shut-off valve
must be disconnected from the gas supply
piping system while performing any tests of the
gas supply piping system at pressures in excess of 1/2 psig.
• The heater must be isolated from the gas
supply piping system by closing its individual
manual shut-off valve during any pressure testing of the gas supply piping system at test
pressures equal to or less than 1/2 psig.
• Keep heater area clear and free from combustible materials, gasoline and other flammable vapors and liquids.
• Do not use this heater if any part has been
under water. Immediately call a qualified service technician to inspect the room heater and
to replace any part of the control system and
any gas control which has been under water.
• Input ratings are shown in BTU per hour and
are for elevations up to 4,800 feet. Do not install
this heater at an elevation above 4,800 feet if the
gas supply has not been derated for that elevation. Consult your local gas supplier. (For operation at elevations above 4,800 feet, equipment ratings shall be reduced at the rate of 4
percent for each 1,000 feet above sea level
before selecting appropriately sized equipment.)
• Ensure that the heater is clean when operating. Excessive dust accumulation on the burner
and/or logs will increase the amount of carbon
monoxide formation and could lead to carbon
monoxide poisoning and/or death.
• DO NOT install this heater into a single (front)
opening fireplace. This heater is designed to be
used in see-through (multi-open) fireplaces only.
CODES
Adhere to all local codes or in their absence the
latest edition of The National Fuel Gas Code
ANSI Z223.1 or NFPA54 which can be obtained
from The American National Standards Institute, Inc. (1430 Broadway, New York, NY,
10018) or National Fire Protection Association,
Inc. (Batterymarch Park, Quincy, MA, 02269).
Massachusetts And New York Requirements
These appliances are approved for installation
in the following USA locations listed in the
following:
Massachusetts:
These fireplaces are approved for installation
in the US state of Massachusetts if the following additional requirements are met-
• Installation and repair must be done by a
plumber or gas fitter licensed in the Commonwealth of Massachusetts.
• The flexible gas line connector used shall not
exceed 36 inches (92 centimeters) in length.
• The individual manual shut-off must be a Thandle type valve.
• Vent-Free appliances may NOT be installed in
bedrooms or bathrooms.
• A working smoke detector must be installed
in the area where vent-free appliances are
installed.
Seller of unvented propane or natural gasfired supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30
upon sale of the unit.
New York:
These fireplaces are approved for installation
in the US state of New York, but not in New
York city.
State or local codes may only allow operation of
this appliance (manual version only) in a vented
configuration. Check your state or local codes.
Superior Unvented Gas Log Room Heaters are
certified by OMNI to ANSI Z21.11.2 standard.
These gas log room heaters may be used as a
space heat source for a room in conjunction with
an approved unvented firebox. Additionally,
manually controlled units are design certified by
OMNI to ANSI 21.60 as a vented gas log set.
COMBUSTION AND VENTILATION AIR
These heaters shall not be installed in a confined space. The heater may be located in
unusually tight construction provided the
space is unconfined, or if confined, is provided with two permanent openings communicating directly with an additional room(s)
of sufficient volume so that the combined
volume of all connected spaces meets the
criteria for an unconfined space, (National
Fuel Gas Code ANSI Z223.1 (latest edition),
Section 5.3). Generally 50 ft3 per 1,000 BTU
input of all operating appliances in the space.
NOTE: DIAGRAMS & ILLUSTRATION NOT TO SCALE.
The National Fuel Gas Code defines a confined
space as a space whose volume is less than
50 ft3 per 1,000 BTU/Hr (4.8 m3 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 ft
per 1,000 BTU/Hr (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.
Unusually tight construction is defined as construction where:
a. wall and ceilings exposed to the outside
atmosphere have a continuous water vapor
retarder with a rating or one perm or less with
openings gasketed or sealed, and
b. weather stripping has been added on operable windows and doors, and
c. caulking or sealants are applied to areas such
as joints around window and door frames,
between sole plates and floors, between wallceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines,
and at other openings.
Use the following equations to determine if you
have a confined or unconfined space.
1.Determine the volume of space — ft
Length x Width x Height = _____ ft
3
.
3
(Include adjoining rooms with doorless passageways or ventilation grills between
rooms.)
Example: 24' (L) x 16' (W) x 8' (H) = 3072 ft
2.Divide the volume of space by 50 ft3 to
determine the maximum BTU/Hr the space
can support.
______ (volume of space – ft3)/ 50 ft3 =
(Maximum BTU/Hr the space can support)
Example: 3072 ft3 / 50 ft3 = 61.44
or 61,440 BTU/Hr the space can support.
3.Add the BTU/Hr of all the fuel burning appliances in the space.
Vent-Free heater _______ BTU/Hr
Gas appliance #1* _______ BTU/Hr
Gas appliance #2 + _______ BTU/Hr
Total = _______ BTU/Hr
3
3
3
Example:
VFST heater 34,000 BTU/Hr
Gas appliance #1 35,000 BTU/Hr
(water heater)
Total = 69,000 BTU/Hr
* Do not include direct-vent gas appliances.
Direct-vent is sealed combustion and draws
combustion air from the outdoors.
4. Compare the maximum BTU/Hr the space
can support with the actual amount of BTU/
Hr used.
_________ BTU/Hr
(max. the space can support)
_________ BTU/Hr
(actual amount of BTU/Hr used)
Example:
61,440 BTU/Hr
(max. the space can support)
69,000 BTU/Hr
(actual amount of BTU/Hr used)
The space in the previous example is a confined
space because the actual BTU/Hr used is more
than the maximum BTU/Hr the space can support. You must provide additional fresh air.
Your options are:
a.Rework equations adding the space of ad-
joining room(s). If the extra volume provides
an unconfined space, then remove door or
add ventilation grills between rooms. Refer
to National Fuel Gas Code, ANSI Z223.1
1992, Section 5.3.
b.Vent room directly to the outdoors. Refer to
National Fuel Gas Code, ANSI Z223.1 1992,
Section 5.3.
If the actual BTU/Hr used is less than the
maximum BTU/Hr the space can support, then
the space is an unconfined space. You will need
no additional fresh air ventilation for an unconfined space.
WARNING: IF THE AREA IN WHICH THE
HEATER MAY BE OPERATED IS SMALLER
THAN THAT DEFINED AS AN UNCONFINED SPACE, PROVIDE ADEQUATE
COMBUSTION AND VENTILATION AIR BY
ONE OF THE METHODS DESCRIBED IN
THE NATIONAL FUEL GAS CODE, ANSI
Z223.1 1992, SECTION 5.3 OR APPLICABLE LOCAL CODES.
PREINSTALLATION
WARNING: BEFORE INSTALLING IN A
SOLID FUEL BURNING FIREPLACE, THE
CHIMNEY FLUE AND FIREBOX MUST BE
CLEANED OF SOOT, CREOSOTE, ASHES
AND LOOSE PAINT BY A QUALIFIED
CHIMNEY CLEANER.
Note: Illustrations shown in this manual reflect
“typical” installations with nominal dimensions
and are for reference only. Actual installations
may vary due to individual design preferences.
However, always maintain minimum clearances
to combustible materials and do not violate any
specific installation requirements. Refer to Figures 1 through 7 for clearances.
Note: The following steps represent the normal
sequence of installation. Each installation is
unique, however, and might require a different
sequence.
When local codes require the damper to be fixed
open, a damper stop must be installed to prevent
full closure of the fireplace damper and provide
a minimum 29 square inch flue opening at all
times. Refer to accessories for damper clamp.
If damper clamp is not available, the damper
may be fixed open in the following manner.
Drill a hole in the end of the damper. Screw in
a bolt of sufficient size and adjust to provide the
minimum 29 square inches of flue opening.
CAUTION: HEATERS CREATE WARM AIR CURRENTS. THESE CURRENTS MOVE HEAT TO
WALL SURFACES NEXT TO HEATER. INSTALLING HEATER NEXT TO VINYL OR CLOTH WALL
COVERINGS OR OPERATING HEATER WHERE
IMPURITIES IN THE AIR (SUCH AS TOBACCO
SMOKE) EXISTS, MAY DISCOLOR WALLS.
Step 1. Turn off gas supply to the fireplace or
firebox.
Step 2. Install and secure heater in fireplace or
firebox.
Step 3. Connect gas line.
Step 4. Assemble logs and test flame.
Step 5. Sprinkle volcanic rock over base plate
in front of and below the main burner.
Check Gas Type
This heater can only be connected to the gas
type specified on the heater rating plate. This
heater can not be modified in the field for a
different gas type. If the gas supply differs, DO
NOT INSTALL the heater. Contact your dealer to
obtain the correct heater.
CLEARANCES
WARNING: DO NOT INSTALL THIS GAS
HEATER:
• IN SLEEPING QUARTERS, BATHROOMS, A MOBILE HOME, OR A RECREATIONAL VEHICLE.
• WHERE CURTAINS, FURNITURE,
CLOTHING OR OTHER FLAMMABLE OBJECTS ARE LESS THAN 42" FROM THE
FRONT OF THE GAS HEATER.
• IN HIGH TRAFFIC AREAS.
• IN WINDY OR DRAFTY AREAS.
Ensure the minimum clearances shown in
Figures 1 through 7
right clearances are determined when facing
the front of the heater.
Follow these instructions carefully to ensure
safe installation. Failure to follow these requirements may create a fire hazard.
Step 1. Sidewall Clearances: The sides of the
fireplace opening must be at least 16" from any
combustible side wall (
Figure 1
Step 2. Ceiling Clearance: The ceiling must be
at least 42" from the top of the heater opening
(
Figure 1
).
are maintained. Left and
16"
Min.
Figure 1
).
42"
Min.
4
NOTE: DIAGRAMS & ILLUSTRATION NOT TO SCALE.
Noncombustible Material Requirements with No Mantel Installed
(A) Noncombustible Material Measurement Requirements for Safe Installation
12" or more Adjustable canopy not required.
8" minimum to 12" Install adjustable canopy, P/N 053751 or
P/N 053752 (
Figure 3
).
Less than 8" Extend noncombustible material to at least
8" and install adjustable canopy (
Figure 3
or
Extend noncombustible material to a height
of at least 12".
Table 2
Noncombustible Material Heights and Mantel Location
Example: The bottom of the mantel may project
from the wall a maximum of 2-1/2" at a minimum of 28" above the opening. The top shelf of
the mantel may project a maximum of 6" at a
minimum of 34-1/2" above the opening.
10"
8"
6"
).
Heat Resistant
Material
2-1/2"
28"
12"
Ceiling
42"
38-5/8"
34-1/2"
Requirements for Safe Installation
with Wood Mantel, Shelf or
Noncombustible Material Measurement Other Combustible Projection
12" or more Adjustable canopy not required. Observe pro-
Figure 4
files shown in
.
8" minimum to 12" Install adjustable canopy and observe pro-
Figure 5
files shown in
.
or
Extend heat resistant material to at least 12"
and observe profiles shown in
Figure 4
Table 3
Step 3. Noncombustible materials (minimum
requirements): To install the room heater with-
out wood mantels, shelves or other combus-
8" or More of
Noncombustible
Material
tible projections directly above the opening of
the fireplace (firebox) refer to
Table 2.
Note that at least 8" of noncombustible
Figure 2
and
Adjustable
Canopy
material must be installed above the heaters
described in this manual.
Noncombustible materials, such as slate and
marble, must be at least ¹⁄₂" thick.
Noncombustible
Material
Heater in Fireplace
or Firebox
Figure 3
A
Step 4. Wood mantel, shelf or combustible
projection requirements: To install a wood
mantel, shelf or other combustible projection
directly above the fireplace (firebox), refer to
Table 3
and to
Heater in Fireplace
or Firebox
Figures 4 and 5
profiles.
for installation
If your mantel profile is unsafe, you may either:
• Raise the mantel to an acceptable height, or
Figure 2
• Remove the mantel.
Top Of Firebox Opening
(Both Sides Of Opening)
Figure 4
Example: The bottom of the mantel may project
from the wall a maximum of 2-1/2 at a minimum of 8" above the opening. The top shelf of
the mantel may project a maximum of 6" at a
minimum of 14-1/2" above the opening.
.
12"
10"
Heat Resistant
Material
Top Of Firebox Opening
(Both Sides Of Opening)
2-1/2"
8"
6"
8"
Min.
18-5/8"
14-1/2"
Hood (Canopy)
26"
22-1/2"
Figure 5
Step 5. Floor clearance: If combustible floor-
ing materials, such as carpeting or asphalt tile,
are to be located within 14" of the fireplace or
nirebox opening, the room heater base must be
at least 5" above the combustible flooring material (
Figure 6
Combustible
Material
).
Combustible
Material
5" Min.
Figure 6
NOTE: DIAGRAMS & ILLUSTRATION NOT TO SCALE.
5
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