Superior VRT2536WS, VRT2542WS Installation And Operation Instructions Manual
P900853-00
INSTALLATION AND
OPERATION INSTRUCTIONS
UNIVERSAL VENT-FREE FIREBOX
42" x 24" and 36" x 24"
Universal Vent-Free Fireboxes
P/N 900853-00 REV. B 06/2017
MODELS
VRT2536WS VRT2542WS
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
In the Commonwealth of Massachusetts:
• Installation must be performed by a licensed plumber or
gas fi tter;
• See Table of Contents for location of additional Commonwealth of Massachusetts requirements.
WARNING: 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.
FOR YOUR SAFETY: Do not store or use gasoline
or other fl ammables 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 fi re department.
Installation and service must be performed by
a qualifi ed installer, service agency or the gas
supplier.
FOR USE ONLY WITH A LISTED GAS-FIRED
UNVENTED DECORATIVE ROOM HEATER NOT TO
EXCEED 40,000 BTU/H.
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.
Carefully review the instructions supplied with
the decorative type unvented room heater for the
minimum fi replace size requirement.
DO NOT INSTALL AN APPLIANCE IN THIS FIREBOX
UNLESS THIS FIREBOX MEETS THE MINIMUM
DIMENSIONS REQUIRED FOR THE INSTALLATIONS.
THIS IS A VENT-FREE GAS-FIRED HEATER ENCLOSURE. 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, PAGES 3 AND 4.
Due to high temperatures, the appliance should be located out
of traffi c and away from furniture or draperies.
US
Report No. F14-168
Do not place clothing or other materials on or near this appliance.
IMPORTANT: READ AND UNDERSTAND THESE INSTRUCTIONS
COMPLETELY BEFORE INSTALLING YOUR VENT-FREE ROOM
HEATERS.
IMPORTANT SAFETY
INFORMATION
INSTALLER: PLEASE LEAVE THESE INSTRUCTIONS WITH THE OWNER.
OWNER: PLEASE RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE.
WARNING
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.
IMPORTANT
The fi replace screens on the appliance must be closed prior to operating the fi replace.
WARNING
These built-in vent-free fi reboxes
have only been tested and approved
for use with ANSI Z21.11.2 Ventfree gas logs.
WARNING
Do not attempt to burn solid wood
fuels, other gas log sets or any
other combustible materials in
this vent-free fi rebox.
WARNING
Any change to this Vent-Free room
heater can be dangerous. Improper
installation or use of this heater can
cause serious injury or death from
fi re, burns, explosion or carbon
monoxide poisoning.
WARNING
Do not allow fans to blow directly
into the fi replace. Avoid any drafts
that alter burner fl ame patterns.
WARNING
Carbon Monoxide Poisoning: Early
signs of carbon monoxide poisoning
are similar to the fl u with headaches, dizziness and/or nausea. If
you have these signs, obtain fresh
air immediately. Have the Vent-Free
Gas Heater serviced as it may not
be operating correctly.
WARNINGS
• Due to high temperatures, the
fi rebox should be located out of
traffi c and away from furniture
and draperies.
• Do not place clothing or other
fl ammable material on or near
the heater.
• Any safety screen or guard removed for servicing the fi rebox
must be replaced and/or closed
prior to operating the heater.
• Installation and repair should
be done by a qualifi ed 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.
• Allow the heater to cool before
servicing. Always shut off any
electricity or gas to the heater
while performing service work.
• Do not install the fi rebox in a
sleeping room or bathroom.
• The appliance 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 test pressures equal
to or less than 1/2 psig.
WARNING
• 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 fl ammable
vapors and liquids.
• Do not use this heater if any
part has been under water. Immediately call a qualifi ed service
technician to inspect the heater
and to replace any part of the control system and any gas control
which has been under water.
• Ensure that the heater is clean
when operating. Excessive dust
accumulation on the burner and
logs will increase the amount of
carbon monoxide formation and
could lead to carbon monoxide
poisoning and death.
IMPORTANT
Before starting your fi rebox installation, read these installation
instructions carefully to be sure you
understand them completely and
in entirety. Failure to follow these
instructions could cause a heater
malfunction resulting in serious
injury and/or property damage.
WARNING
Do not install in the vicinity where
gasoline or other fl ammable liquids may be stored. The Vent-Free
fi rebox must be kept clear and free
from these combustible materials.
WARNING
Maintain minimum clearances.
2
CONGRATULATIONS!
Misc. Codes / Standards -
In selecting this Superior® Vent-Free Gas Firebox you have chosen the fi nest and most
dependable fi replace to be found anywhere. A beautiful, prestigious, alternative to a
wood burning fi replace. Welcome to a family of tens of thousands of satisfi ed Superior
Fireplace Owners.
Please read and carefully follow all of the instructions found in this manual. Please pay
special attention to the safety instructions provided in this manual. The Homeowner's
Care and Operation Instructions included here will assure that you have many years of
dependable and enjoyable service from your Superior product.
TABLE OF CONTENTS
Important Safety Information ........... Page 2
Packaging List .................................. Page 3
General Information ......................... Page 3
Burn-in Period .................................. Page 3
Tools/Building Supplies .................... Page 3
Codes ............................................... Page 3
Combustion And Ventilation Air ....... Page 3
Cold Climate Insulation .................... Page 4
Requirements for the
Commonwealth of Massachusetts Page 5
Location Of Firebox .......................... Page 6
Clearances ....................................... Page 6
Assembly Steps ............................... Page 8
Gas Line Installation ......................... Page 8
Firebox Framing ............................... Page 9
Firebox Installation ........................... Page 9
Specifi cations ................................... Page 10
Framing Specifi cations ..................... Page 11
Hood Installation .............................. Page 11
Optional Equipment / Blower Kit
Installation .................................. Page 12
Firebox Finishes ............................... Page 15
Accessories/components ................. Page 15
Replacement Parts List .................... Page 17
Warranty .......................................... Page 19
This installation manual will help you obtain
a safe, effi cient, dependable installation for
your appliance and vent system.
PLEASE READ AND UNDERSTAND
THESE INSTRUCTIONS BEFORE BEGIN-
NING YOUR INSTALLATION.
Packaging List
Vent-Free Gas Firebox
Hood
Installation and Operation Instructions
GENERAL INFORMATION
These Vent-Free fi rebox enclosures are designed
to accept all ANSI Z21.11.2 approved Decorative
Type Vent-Free Gas Log Room Heaters. For the
appropriate Vent-Free Gas Log Room Heater
model, refer to Page 16 (see
Sets). Refer to the installation instructions pro-
vided with the log sets for detailed instructions.
This installation manual along with the vent-free
gas log installation manual will enable you to
obtain a safe, effi cient and dependable installation of your room heater system.
Do not alter or modify the fi rebox or its
com ponents under any circumstances. Any
modifi cation or alteration of the fi rebox system,
including but not limited to the fi rebox and accessories, may void the warranty, listings and
approvals of this system and could result in an
unsafe and potentially dangerous installation.
These Built-In Vent-Free Fireboxes have been
tested and approved as Ventless Firebox Enclosures for Gas-Fired Unvented Decorative Room
Heaters to ANSI Z21.91.
Vent-Free Gas Log
Burn-in Period
During the fi rst few times of operation of this
appliance there will be some odor due to the
curing of the paint and burning off of lubricants
used in the manufacturing process. We recommend that you open windows and ventilate the
house during the initial burns. The paint emits
non-toxic odors during this process.
Depending on your use, the burn-in period may
take a few hours or a few days.
The Installation 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.
The appliance, when installed, must be electrically grounded in accordance with local codes or,
in the absence of local codes, with the National
Electrical Code, ANSI/NFPA 70 - latest edition.
Check the packaging list to be sure that you
have all the necessary parts in usable condition.
Also check for concealed damage.
Tools and Building Supplies
Normally Required
Tools Should Include:
• Phillips screwdriver
• Hammer
• Saw and/or sabersaw
• Level
• Measuring tape
• Electric drill and bits
• Pliers
• Square
• Piping complying with local codes
• Pipe wrench
• Tee joint
• Pipe compound
Building Supplies Should Include:
• Framing materials
• Wall fi nishing materials
• Caulking materials
• Fireplace surround materials
(noncombustible)
• Insulation
(for packing around gas-line penetration holes)
(noncombustible)
Codes
Adhere to all local codes or in their absence
the latest edition of The National Fuel Gas Code
ANSI Z223.1 or NFPA 54 - latest edition which
can be obtained from The American National
Standards Institute, Inc. (25 West 43rd Street,
4th fl oor New York, NY 10036) or National Fire
Protection Association, Inc. (1 Batterymarch
Park Quincy, MA 02169-7471).
KEEP YOUR HOUSE WELL VENTILATED
DURING THE BURN-IN PERIOD. THE ODOR
AND HAZE EMITTED DURING THE BURN-IN
PERIOD CAN BE QUITE NOTICEABLE AND MAY
SET OFF A SMOKE DETECTOR.
If an optional blower is installed, Do not turn it
on during the Burn-In period.
3
COMBUSTION AND VENTILATION AIR
Heaters installed in these appliances shall
not be installed in a confi ned space. Heaters
installed in these appliances may be located
in unusually tight construction provided the
space is unconfi ned, or if confi ned, is provided
with two permanent openings communicating
directly with an additional room(s) of suffi cient volume so that the combined volume
of all connected spaces meets the criteria for
an unconfi ned space, (National Fuel Gas Code
ANSI Z223.1 - latest edition, Section on Air for
Combustion and Ventilation). Generally 50 ft
per 1,000 BTU input of all operating appliances
in the space.
The National Fuel Gas Code defi nes a confi ned
space as a space whose volume is less than
3
50 ft
per 1,000 BTU/Hr (4.8 m3 per kw) of the
aggregate input rating of all appliances installed
in that space and an unconfi ned space as a space
whose volume is not less than 50 ft
BTU/Hr (4.8 m
3
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 unconfi ned space.
Unusually tight construction is defi ned as
construction where:
a. Walls and ceilings exposed to the outside
atmosphere have a continuous water vapor
retarder with a rating of one perm or less with
openings gasketed or sealed, and
b. Weather stripping has been added on oper-
able windows and doors, and
c. Caulking or sealants are applied to areas such
as joints around window and door frames,
between sole plates and fl oors, between
wall-ceiling 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 confi ned or unconfi ned space.
1. Determine the volume of space — ft
Length x Width x Height = _____ ft
(Include adjoining rooms with doorless
passageways or ventilation grills between
rooms).
Example: 24' (L) x 16' (W) x 8' (H) = 3072
3
ft
3
per 1,000
3
.
3
2. Divide the volume of space by 50 ft 3 to
determine the maximum BTU/Hr the space
can support.
(volume of space – ft
3
)/ 50 ft 3 = (Maximum
BTU/Hr the space can support)
3
Example: 3072 ft
/ 50 ft 3 = 61.44
or 61,440 BTU/Hr the space can support.
3. Add the BTU/Hr of all the fuel burning appli-
ances in the space.
Vent-Free heater ________ BTU/Hr
Gas appliance #1* ________ BTU/Hr
3
Gas appliance #2 +________ BTU/Hr
Total =________ BTU/Hr
Example:
Vent-free heater 26,000 BTU/Hr
Gas appliance #1 40,000 BTU/Hr
(water heater)
Total = 66,000 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)
66,000 BTU/Hr
(actual amount of BTU/Hr used)
The space in the above example is a confi ned
space because the actual BTU/Hr used is more
than the maximum BTU/Hr the space can support. You must provide additional fresh air.
WARNING
If the area in which the heater may be
operated does not meet the required
volume for indoor combustion air,
combustion and ventilation air shall
be provided by one of the methods
described in the National Fuel gas
Code, ANSI Z223.1/NFPA 54, the International Fuel gas Code, or applicable
local codes.
Your options are:
a. Rework equations adding the space of adjoin-
ing room(s). If the extra volume provides an
unconfi ned space, then remove door or add
ventilation grills between rooms. Refer to
National Fuel Gas Code, ANSI Z223.1 - latest
edition, Section on Air for Combustion and
Ventilation.
b. Vent room directly to the outdoors. Refer to
National Fuel Gas Code, ANSI Z223.1 - latest
edition, Section on Air for Combustion and
Ventilation.
c. Install a lower BTU/Hr heater, such as a 21,000
BTU/Hr, to make the area an unconfi ned
space.
If the actual BTU/Hr used is less than the
maximum BTU/Hr the space can support, then
the space is an unconfi ned space. You will
need no additional fresh air ventilation for an
unconfi ned space.
This appliance shall not be installed in a room
or space unless the required volume of indoor
combustion air is provided by the method
described in the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, the International Fuel Gas
Code, or applicable local codes.
Maintain adequate clearances around air
openings.
Maintain adequate clearances for accessibility
for purposes of servicing and proper operation.
COLD CLIMATE INSULATION
For cold climate installations, seal all cracks
around the appliance with noncombustible
material and wherever cold air could enter
the room. It is especially important to insulate
outside cavities between studs and under fl oor
on which the appliance rests, if fl oor is above
ground level. Gas line holes and other openings
should be caulked with high temperature caulk
or stuffed with unfaced fi berglass insulation. If
the fi replace is being installed on a cement slab,
in cold climates, a sheet of plywood or other
raised platform can be placed underneath to
prevent conducting cold up into the room. It
also helps to
for maximum air tightness and caulk fi restops.
sheetrock inside surfaces and tape
4
NOTE: DIAGRAMS & ILLUSTRATION ARE NOT TO SCALE.
NOTE: The following requirements reference
various Massachusetts and national codes
not contained in this document.
Requirements for the Commonwealth
of Massachusetts
These appliances are approved for installation
in the US state of Massachusetts if the following
additional requirements are met:
• Un-vented Room Heaters shall be installed
in accordance with 527 CMR 30.
• Installation and repair must be done by a
plumber or gas fi tter licensed in the Commonwealth of Massachusetts.
• The fl exible gas line connector used shall
not exceed 36 inches (92 centimeters) in
length.
• The individual manual shut-off must be a
T-handle type valve.
• Unvented appliances may NOT be installed
in bedrooms or bathrooms.
LOCATION OF FIREBOX
Carefully select the best location for installation
of your built-in Vent-Free fi rebox. The following
factors should be taken into consideration:
• Clearance to side wall, ceiling, woodwork
and windows.
• Location must not be affected by drafts
caused by kitchen exhaust fans, return air
registers for forced air furnaces/air conditioners, windows or doors.
• Installation must provide adequate ventila-
tion and combustion air.
• Do not install this fi rebox in a sleeping room
or bathroom.
• Location should be out of high traffi c areas
and away from furniture and draperies due
to heat from fi rebox.
• Never obstruct the front opening of the
Vent-Free fi rebox or restrict the fl ow of
combustion and ventilation air.
• Minimize modifi cations to existing construction. See Figure 1 for location suggestions.
WARNING
Do not install these built-in VentFree fi reboxes in sleeping quarters,
or in recreational vehicles.
WARNINGS
Do not install these appliances:
Where curtains, furniture, cloth-
•
ing or other fl ammable objects
are less than 42" from the front
of the Vent-Free room heater.
In high traffi c areas.
•
In windy or drafty areas.
•
• A working smoke detector must be installed
in the area where vent-free appliances are
installed.
Seller of unvented propane or natural gas-fi red
supplemental room heaters shall provide to
each purchaser a copy of 527 CMR 30 upon
sale of the unit.
CAUTION
Do not install in the vicinity where
gasoline or other fl ammable liquids may be stored. The Vent-Free
fi rebox must be kept clear and free
from these combustible materials.
WARNING
Do not use a blower insert, heat
exchanger insert or other accessory not approved for use with this
appliance.
Not to Scale
Figure 1
NOTE: DIAGRAMS & ILLUSTRATION ARE NOT TO SCALE.
5
g
Clearances
Ensure the minimum clearances shown in Figures 2 through 4 are
maintained. Left and right clearances are determined when facing the
front of the fi rebox.
Follow these instructions carefully to ensure safe installation. Failure to
follow these requirements may create a fi re hazard.
Combustible Side Clearances:
Clearances from the side of the fi rebox opening to any combustible
material (e.g. side wall, mantel leg, bookshelf, etc.), must comply with
the requirements shown in Figures 2 and 2a.
Example: If the mantel leg, bookshelf or other combustible material
protrudes 5" from the plane of the wall where the fi rebox is installed,
the combustible material must be a minimum of 6" from the side of the
fi rebox opening (see Figure 2a).
Ceiling clearance: The ceiling must be at least 40" from the top of the
fi rebox opening (Figure 2).
Noncombustible material: Noncombustible materials, such as slate and
marble, must be at least 1/2" thick and may be used without restriction
above the fi rebox opening, to the sides or as a hearth extension, so long
as they do not obstruct vent openings for heat circulating models.
NOTE: To avoid heat-related fi nish damage, we recommend the use
of high temperature paint (rated 175° F or higher) on the underside
of the mantel.
Combustible Wall Clearance
Above Appliance (all models)
Figure 2
Optional
Hearth
Extension
Example
16"
40"
45°
13”
11”
9”
7”
6”
5”
4”
3”
2”
Finished Wall
Non-Combustible
Material
(shaded area)
Shown with hood Installed
(required on VRT2536WS and
VRT2542WS)
Figure 3
3" Min.
Header
Top Stand-
Off Spacer
(on appliance)
Top of Appliance
Fireplace
Openin
5”
4”
6”
Top View
3”**
* Minimum 16” from Side Wall
**No combustible material may be closer than 3”
from the fireplace opening.
Figure 2a - Minimum Side Clearances to Combustibles
6
7”
10”
8”
14”
12”
NOTE: DIAGRAMS & ILLUSTRATION ARE NOT TO SCALE.
16”*
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