Superior MNF24INE, MNF30INE, MNF30IPE, MNF24IPE Installation And Operation Instructions Manual

P/N 900462-01 Rev. NC 08/2015

Installation and Operation Instructions

Superior® Unvented (Vent-Free) Gas Log Heater

Models

MNF24INE MNF24IPE MNF30INE MNF30IPE

P900462-01

PFS

Report No. 10-87

®

US

For use with log sets

LMF24GTA, LMF24GTB, LMF30GTA, LMF30GTB, LMF36GTA, and LMF36GTB

INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.

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.

WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built
fi replace or in a listed ventless fi rebox enclosure. It is design-certifi ed for these installations in accordance
with ANSI Z21.11.2. Exception: DO NOT install this appliance in a factory-built fi replace that includes
instructions stating it has not been tested or should not be used with unvented gas logs.

This is an unvented gas-fi red 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 Air for Combustion and Ventilation
section on page 6 of this manual.

WARNING:

FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in serious injury, death, or property damage.

- 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.

• Leave the building immediately.

• 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.

TABLE OF CONTENTS

Safety .................................................................. 2

Product Identifi cation ........................................... 5

Local Codes......................................................... 5

Unpacking............................................................ 5

Product Features ................................................. 6

Air For Combustion and Ventilation ..................... 6

Installation ........................................................... 8

Operation ........................................................... 22

Inspecting Burners............................................. 29

SAFETY

WARNING: Improp-

Cleaning and Maintenance ................................ 29

Specifi cations .................................................... 30

Wiring Diagram .................................................. 31

Troubleshooting ................................................. 32

Accessories ....................................................... 39

Parts .................................................................. 40

Replacement Parts ............................................ 43

Service Hints ..................................................... 43

Technical Service............................................... 43

Warranty ............................................................ 44

WARNING: This is an

er installation, adjust­ment, alteration, service
or maintenance can cause
injury or property damage.
Refer to this manual for
correct installation and
operational procedures.
For assistance or addi­tional information consult
a qualifi ed installer, ser-
vice agency or the gas
supplier.

WARNING: This ap­pliance is for installation
only in a solid-fuel burning
masonry or UL127 factory-

unvented gas-fi red heat-
er. It uses air (oxygen)
from the room in which
it is installed. Provisions
for adequate combustion
and ventilation air must
be provided. Refer to Air

for Combustion and Ven­tilation section on page 6

of this manual.
This appliance may be in-

stalled in an aftermarket,*
permanently located,
manufactured (mobile)
home, where not prohib-

ited by local codes.
built fi replace or in a listed
ventless fi rebox enclosure.
It is design-certified for
these installations in accor­dance with ANSI Z21.11.2.
Exception: DO NOT install
this appliance in a factory­built fi replace that includes
instructions stating it has
not been tested or should
not be used with unvented
gas logs.

SuperiorFireplaces.us.com

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.

* Aftermarket: Completion of sale, not for
purpose of resale, from the manufacturer

900462-01 NC2

SAFETY

Continued

WARNING: This product con­tains and/or generates chemicals
known to the state of California
to cause cancer or birth defects
or other reproductive harm.

IMPORT ANT: Read this owner’s
manual carefully and completely
before trying to assemble, op­erate or service this fi replace.
Improper use of this fi replace
can cause serious injury or
death from burns, fi re, explo-
sion, electrical shock and carbon
monoxide poisoning.

DANGER: Carbon monoxide
poisoning may lead to death!

Carbon Monoxide Poisoning: Early signs of

carbon monoxide poisoning resemble the fl u,
with headaches, dizziness or nausea. If you
have these signs, the fi replace may not be

working properly. Get fresh air at once! Have

fi replace serviced. Some people are more af­fected by carbon monoxide than others. These
include pregnant women, people with heart
or lung disease or anemia, those under the
infl uence of alcohol and those at high altitudes.

Natural and Propane/LP
odor-making agent is added to these gases.
The odor helps you detect a gas leak. How­ever, the odor added to the gas can fade. Gas
may be present even though no odor exists.

Make certain you read and understand all
warnings. Keep this manual for reference. It
is your guide to safe and proper operation of
this fi replace.

gases are odorless. An

WARNING: Any change to
this heater or its controls can
be dangerous.

WARNING: Do not allow fans
to blow directly into the fi replace.
Avoid any drafts that alter burner
fl ame patterns. Ceiling fans can
create drafts that alter burner fl ame
patterns. Altered burner patterns
can cause sooting.

Due to high temperatures, the ap­pliance 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
appliance. Never place any objects
on the heater.

Heater base assembly becomes
very hot when running heater. Keep
children and adults away from hot
surface to avoid burns or clothing
ignition. Heater will remain hot for a
time after shutdown. Allow surface
to cool before touching.

Carefully supervise young children
when they are in the room with heater.
When using the hand-held remote
accessory, keep selector switch in
the OFF position to prevent children
from turning on burners with remote.

You must operate this heater with
the fi replace screen and hood in
place. Make sure fi replace screen
and hood are in place before running
heater. The fi replace screen shall
have openings for introduction of
combustion air.

WARNING: Do not use a
blower insert, heat exchanger
insert or other accessory not ap­proved for use with this heater.

900462-01 NC 3

SuperiorFireplaces.us.com

Keep the appliance area clear and
free from combustible materials,
gasoline and other fl ammable va-
pors and liquids.

SAFETY

Continued

1. 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.

2. Do not place propane/LP supply tank(s)
inside any structure. Locate propane/LP
supply tank(s) outdoors (propane/LP units
only).

3. If you smell gas

• shut off gas supply

• 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

4. This heater shall not be installed in a
bedroom or bathroom.

5. Before installing in a solid fuel burning fi re-
place, the chimney fl ue and fi rebox must
be cleaned of soot, creosote, ashes and
loose paint by a qualifi ed chimney cleaner.
Creosote will ignite if highly heated. A dirty
chimney fl ue may create and distribute
soot within the house. Inspect chimney
fl ue for damage. If damaged, repair fl ue
and fi rebox before operating heater.

6. Do not burn solid-fuel in a fi replace in
which a vent-free room heater is installed.

7. If fi replace has glass doors, never operate
this heater with glass doors closed. Any
glass doors shall be fully opened when the
appliance is in operation. If you operate
heater with doors closed, heat buildup
inside fi replace will cause glass to burst.
Make sure there are no obstructions
across openings of fi replace.

8. To prevent the creation of soot, follow the

instructions in Cleaning and Maintenance,

page 29.

9. Before using furniture polish, wax, carpet

cleaner or similar products, turn heater off. If
heated, the vapors from these products may
create a white powder residue within burner
box or on adjacent walls and furniture.

10. This heater needs fresh, outside air ven­tilation to run properly. This heater has an
Oxygen Depletion Sensing (ODS) safety
shutoff system. The ODS shuts down the
heater if enough fresh air is not available.

See Air for Combustion and Ventilation,

page 6. If heater keeps shutting off, see

Troubleshooting, page 32.

11. Do not run heater

• where fl ammable liquids or vapors are

used or stored

• under dusty conditions

12. Do not use this heater to cook food or burn
paper or other objects.

13. Do not use heater if any part has been ex­posed to or under water. Immediately call
a qualifi ed 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.

14. Do not operate heater if any log is broken.
Do not operate heater if a log is chipped
(dime-sized or larger).

15. Turn heater off and let cool before servic­ing, installing or repairing. Only a qualifi ed
service person should install, service or
repair heater.

16. Make sure the remote is set to the OFF
position when you are away from home
for long periods of time.

17. Remote heaters must not be connected
to any external electrical source.

18. Operating heater above elevations of
4,500 feet may cause pilot outage.

19. To prevent performance problems, do
not use propane/LP fuel tank of less than
100 lb. capacity (propane/LP units only).

20. Provide adequate clearances around air
openings.

Young children should be carefully supervised when they are in the same

room as the appliance. Toddlers, young children and others may be

susceptible to accidental burns.A physical barrier is recommended if there

are at-risk individuals in the house. To restrict access to a fi replace or

stove, install an adjustable safety gate to keep toddlers, young children and

other at-risk individuals out of the room and away from hot surfaces.

SuperiorFireplaces.us.com

900462-01 NC4

Left
Side

Chassis

PRODUCT IDENTIFICATION

Glowing
Embers

Front

Figure 1 - Product Identifi cation

LOCAL CODES

Install and use heater with care. Follow all
local codes. In the absence of local codes,

use the latest edition of The National Fuel
Gas Code, ANSI Z223.1/NFPA 54*.

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

State of Massachusetts: The installa-

tion must be made by a licensed plumber
or gas fitter in the Commonwealth of
Massachusetts.

Sellers 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.

Vent-free gas products are prohibited for
bedroom and bathroom installation in the
Commonwealth of Massachusetts.

Right
Side

UNPACKING

CAUTION: Do not remove the
data plates from the grate as­sembly . The data plates contain
important warranty and safety
information.

1. Remove logs and heater base assembly
from carton(s).

Note: Do not pick up heater base assem-

bly by burners. This could damage heater.
Always handle base assembly by grate.

2. Remove all protective packaging applied
to logs and heater for shipment.

3. Check heater for any shipping damage.
If the heater is damaged go to

Fireplaces.us.com or contact your dealer
for information.

Superior-

900462-01 NC 5

SuperiorFireplaces.us.com

PRODUCT FEATURES

OPERATION

This heater is clean burning. It requires no
outside venting. There is no heat loss out a
vent or up a chimney. Heat is generated by
both realistic fl ames and glowing coals. This
heater is designed for vent-free operation
with fl ue damper closed. It has been tested
and approved to ANSI Z21.11.2 standard for
unvented heaters.

AIR FOR COMBUSTION AND VENTILATION

WARNING: This heater 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/NFP A 54, the International
Fuel Gas Code, or applicable

local codes. Read the following
instructions to insure proper fresh
air for this and other fuel-burning
appliances in your home.

Today’s homes are built more energy effi cient
than ever. New materials, increased insulation
and new construction methods help reduce
heat loss in homes. Home owners weather
strip and caulk around windows and doors to
keep the cold air out and the warm air in. Dur­ing heating months, home owners want their
homes as airtight as possible.

While it is good to make your home energy
effi cient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning ap­pliances need fresh air for proper combustion
and ventilation.

Exhaust fans, fi replaces, clothes dryers and
fuel burning appliances draw air from the house
to operate. You must provide adequate fresh
air for these appliances. This will insure proper
venting of vented fuel-burning appliances.

PROVIDING ADEQUA TE
VENTILATION

The following are excerpts from National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Air for
Combustion and Ventilation.

SAFETY DEVICE

This heater has a pilot with an Oxygen Deple­tion Sensing (ODS) safety shutoff system. The
ODS/pilot is a required feature for vent-free
room heaters. The ODS/pilot shuts off the
heater if there is not enough fresh air.

ELECTRONIC IGNITION SYSTEM

This heater has an electronic ignitor to light
heater fuel supply.

All spaces in homes fall into one of the three
following ventilation classifi cations:

1. Unusually Tight Construction

2. Unconfi ned Space

3. Confi ned Space
The information on pages 6 through 8 will help

you classify your space and provide adequate
ventilation.

Unusually Tight Construction

The air that leaks around doors and windows
may provide enough fresh air for combustion
and ventilation. However, in buildings of un­usually tight construction, you must provide
additional fresh air.

Unusually tight construction is defi ned as
construction where:

a. walls and ceilings exposed to the out-

side atmosphere have a continuous
water vapor retarder with a rating of
one perm (6 x 10
less with openings gasketed or sealed
and

b. weather stripping has been added on

openable 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.

If your home meets all of the three criteria
above, you must provide additional fresh air.

See Ventilation Air From Outdoors, page 8.

If your home does not meet all of the three

criteria above, proceed to Determining Fresh-
Air Flow For Heater Location, page 7.

-11

kg per pa-sec-m2) or

SuperiorFireplaces.us.com

900462-01 NC6

AIR FOR COMBUSTION AND VENTILATION

Continued

Confi ned and Unconfi ned Space

The National Fuel Gas Code, ANSI Z223.1/
NFP A 54 defi nes a confi ned space as a space

whose volume is less than 50 cubic feet per

3

1,000 Btu/hr (4.8 m

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 cubic feet

3

per 1,000 Btu/hr (4.8 m

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.

* Adjoining rooms are communicating only if
there are doorless passageways or ventilation
grills between them.

DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION

Determining if You Have a Confi ned or
Unconfi ned Space

Use this work sheet to determine if you have
a confi ned or unconfi ned space.

Space: Includes the room in which you will install

fi replace plus any adjoining rooms with door­less passageways or ventilation grills between
the rooms.

1. Determine the volume of the space (length

x width x height).

Length x Width x Height =__________cu. ft.

(volume of space)

Example: Space size 20 ft. (length) x 16 ft.

(width) x 8 ft. (ceiling height) = 2560 cu. ft.
(volume of space)

If additional ventilation to adjoining room

is supplied with grills or openings, add the
volume of these rooms to the total volume
of the space.

2. Multiply the space volume by 20 to determine

the maximum Btu/Hr the space can support.

________ (volume of space) x 20 = (Maxi-

mum Btu/Hr the space can support)

Example: 2560 cu. ft. (volume of space) x 20

= 51,200 (maximum Btu/Hr the space can
support)

3. Add the Btu/Hr of all fuel burning appliances

in the space.

Vent-free fi replace __________ Btu/Hr
Gas water heater* __________ Btu/Hr
Gas furnace __________ Btu/Hr
Vented gas heater __________ Btu/Hr
Gas fi replace logs __________ Btu/Hr
Other gas appliances* + _________ Btu/Hr
Total = _________ Btu/Hr
* Do not include direct-vent gas appliances.

Direct-vent draws combustion air from the
outdoors and vents to the outdoors.

Example:

Gas water heater __________ Btu/Hr
Vent-free fi replace + _________ Btu/Hr
Total = _________ Btu/Hr

4. Compare the maximum Btu/Hr the space
can support with the actual amount of Btu/
Hr used.

______Btu/Hr (maximum the space can

support)

______Btu/Hr (actual amount used)

Example: 51,200 Btu/Hr (maximum the

space can support)

73,000 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. Your
options are as follows:

A. Rework worksheet, adding the space of an

adjoining room. If the extra space provides
an unconfi ned space, remove door to adjoin-
ing room or add ventilation grills between

rooms. See Ventilation Air From Inside
Building, page 8.

B. Vent room directly to the outdoors. See

Ventilation Air From Outdoors, page 8.

C. Install a lower Btu/Hr fi replace, if lower Btu/

Hr size makes room unconfi ned.

If the actual Btu/Hr used is less than the maxi-

mum Btu/Hr the space can support, the space is

an unconfi ned space. You will need no additional
fresh air ventilation.

40,000
33,000
73,000

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.

900462-01 NC 7

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AIR FOR COMBUSTION AND VENTILATION

A

Continued

VENTILA TION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining
unconfi ned space. When ventilating to an
adjoining unconfi ned space, you must provide
two permanent openings: one within 12" of the
ceiling and one within 12" of the fl oor on the
wall connecting the two spaces (see options
1 and 2, Figure 2). You can also remove door
into adjoining room (see option 3, Figure 2).

Follow the National Fuel Gas Code, ANSI

Z223.1/NFPA 54, Air for Combustion and
Ventilation for required size of ventilation

grills or ducts.

12"

Ventilation

Grills Into

Adjoining

Room,

Option 1

Or

Remove
Door into
Adjoining

Room,
Option

3

Ventilation Grills

Into Adjoining Room,

Option 2

12"

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation
grills or ducts. You must provide two perma­nent openings: one within 12" of the ceiling
and one within 12" of the fl oor. Connect these
items directly to the outdoors or spaces open
to the outdoors. These spaces include attics

and crawl spaces. Follow the National Fuel

Gas Code, ANSI Z223.1/NFPA 54, Air for
Combustion and Ventilation for required size

of ventilation grills or ducts.

IMPORTANT: Do not provide openings

for inlet or outlet air into attic if attic has a
thermostat-controlled power vent. Heated air
entering the attic will activate the power vent.

Ventilated
Attic

Ventilated

Crawl Space

To Attic

To

Crawl

Space

Outlet

ir

Inlet
Air

Outlet
Air

Inlet Air

Figure 3 - Ventilation Air from Outdoors

Figure 2 - Ventilation Air from Inside Building

INSTALLATION

NOTICE: This heater is intended
for use as supplemental heat.
Use this heater along with your
primary heating system. Do not
install this heater as your pri­mary heat source. If you have a
central heating system, you may
run system’s circulating blower
while using heater. This will help
circulate the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.

WARNING: A qualifi ed ser-
vice person must install heater .
Follow all local codes.

WARNING: Any outside air
ducts and/or ash dumps in the
fi replace shall be permanently
closed at time of appliance in­stallation.

WARNING: Seal any fresh
air vents or ash clean-out doors
located on fl oor or wall of fi re-
place. If not, drafting may cause
pilot outage or sooting. Use a
heat-resistant sealant. Do not
seal chimney fl ue damper.

SuperiorFireplaces.us.com

900462-01 NC8

INSTALLATION

Continued

W ARNING: Before installing

CHECK GAS TYPE

Use the correct type of gas (natural or propane/
LP). If your gas supply is not the correct gas
type, do not install heater. Call dealer where
you bought heater for proper type heater.

in a solid fuel burning fi replace,
the chimney fl ue and fi rebox
must be cleaned of soot, creo­sote, ashes and loose paint by
a qualified chimney cleaner.
Creosote will ignite if highly
heated. A dirty chimney fl ue may

WARNING: This appliance is
equipped for either natural gas
or propane/LP gas but not both.
Gas type is indicated on the rat­ing plate. Field conversion is not
permitted.

create and distribute soot within
the house. Inspect chimney and
fi rebox fl ue for damage. If dam-

INST ALLATION AND CLEARANCES
FOR VENT-FREE OPERATION

aged, repair fl ue and fi rebox
before operating heater.

WARNING: Maintain the
minimum clearances. If you can,

W ARNING: Never install the

heater

• in a bedroom or bathroom

• in a recreational vehicle

•

where curtains, furniture, cloth­ing or other fl ammable objects

provide greater clearances from
fl oor, ceiling and adjoining wall.

MINIMUM FIREPLACE CLEARANCE TO

COMBUSTIBLE MATERIALS

Side Wall 16", Ceiling 42"

Floor 5", Front: 36"

are less than 36" from front, 42"
from top of heater; for side clear­ances see Figure 4, page 10

• in high traffi c areas

• in windy or drafty areas

CAUTION: This heater creates
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
(such as, but not limited to, to­bacco smoke, aromatic candles,
cleaning fl uids, oil or kerosene
lamps, etc.) in the air exist, may
discolor walls or cause odors.

IMPORTANT: Vent-free heaters add moisture

to the air. Although this is benefi cial, installing
heater in rooms without enough ventilation
air may cause mildew to form from too much

moisture. See Air for Combustion and Ventila-
tion, page 6.

900462-01 NC 9

SuperiorFireplaces.us.com

LOG SIZING REQUIREMENTS

Log

Size

LMF24-

GTA/B

LMF30-

GTA/B

LMF36-

GTA/B

* Also approved for use in VEGA42 and V ALIANT42
SERIES fi replaces.

Carefully follow the instructions below. This
will ensure safe installation into a masonry,
UL127-listed manufactured fi replace or listed
vent-free fi rebox.

Minimum Clearances For Side Combustible
Material, Side Wall and Ceiling

A. Clearances from the side of the fi replace

cabinet to any combustible material and
wall should follow diagram in Figure 4,
page 10.

Example: The face of a mantel, bookshelf,

etc. is made of combustible material
and protrudes 3
combustible material must be 4" from the
side of the fi replace cabinet (see Figure
4, page 10).

Minimum Firebox Size

Height Depth

29" 15.5" 32.5" 22.75"

29" 15.5" 39" 26.75"

29'' 20'' 47'' 33''

1

Front

Width

/2" from the wall. This

Width

Rear*

INSTALLATION

Continued

Note: When installing your gas logs into

a manufactured fi rebox, follow fi rebox
manufacturer’s instructions for minimum
clearances to combustible materials.

B. Clearances from the top of the fi replace

opening to the ceiling should not be less
than 42".

Example

*

*Minimum 16" from Side Wall

Figure 4 - Minimum Clearance for

Combustible to Wall

Minimum Noncombustible Material
Clearances

If Not Using Mantel

Note: If using a mantel proceed to If Using
Mantel. If not using a mantel, follow these
instructions.

You must have noncombustible material(s)
above the fi replace opening. Noncombustible
materials (such as slate, marble, tile, etc.) must
be at least 1/2" thick. With sheet metal, you
must have noncombustible material behind
it. Noncombustible material must extend at
least 8" up (for all models). If noncombustible
material is less than 12", you must install the
fi replace hood accessory (24" and 30" Models
Only). See Figure 5 for minimum clearances.

Noncombustible
Material Distance

Requirements for
Safe Installation

(A)

1

2" or more Noncombustible mate-

rial OK.

Between 8" and 12"

Install fi replace hood
accessory (GA6050 or

GA6053 see Accesso-
ries, page 39).

Less than 8"

Noncombustible mate­rial must be extended
to at least 8". See

Between 8" and 12",

above. If you cannot
extend material, you
must operate heater
with fl ue damper open.

Heat Resistant
Material

(A)

Figure 5 - Heat Resistant Material (Slate,

Marble, Tile, etc.) Above Fireplace

If Using Mantel

You must have noncombustible material(s)
above the fi replace opening. Noncombustible
materials (such as slate, marble, tile, etc.)
must be at least 1/2" thick. With sheet metal,
you must have noncombustible material be­hind it. Noncombustible material must extend
at least 8" up (for all models). If noncom­bustible material is less than 12", you must
install the fi replace hood accessory. Even if
noncombustible material is more than 12",
you may need the hood accessory to defl ect
heat away from your mantel shelf. See Figure
5 and Figures 6 and 7, page 11, for minimum
clearances.

SuperiorFireplaces.us.com

900462-01 NC10

INSTALLATION

Continued

MANTEL CLEARANCES

In addition to meeting noncombustible mate­rial clearances, you must also meet required
clearances between fi replace opening and
mantel shelf. If you do not meet the clearances
listed below, you will need a hood.

Determining Minimum Mantel Clearance

If you meet minimum clearance between
mantel shelf and top of fi replace opening, a
hood is not required (see Figure 6).

Mantel Shelf

/2

"

(A)

12"

18" 20" 22" 24"

Distances to
Underside of
Mantel

Underside of
Mantel Shelf

All minimum
distances are
in inches

Top of Fireplace
Opening

Minimum Non­Combustible
Material

10"

8"

6"

1

2

Minimum Non­Combustible
Material Height

NOTICE: Surface temperatures
of adjacent walls and mantels be­come hot during operation. Walls
and mantels above the fi rebox
may become hot to the touch.
If installed properly, these tem­peratures meet the requirement
of the national product standard.
Follow all minimum clearances
shown in this manual.

NOTICE: If your installation does
not meet the minimum clear­ances shown, you must do one
of the following:

• operate the logs only with the
fl ue damper open

• raise the mantel to an accept­able height

• remove the mantel

Figure 6 - Minimum Mantel Clearances

Without Using Hood

Determining Minimum Mantel Clearance
When Using a Hood

If minimum clearances in Figure 6, are not
met, you must have a hood. When using a
hood there are still certain minimum mantel
clearances required. Follow minimum clear­ances shown in Figure 7, when using hood.

"

8"
Min.

Mantel Shelf

12" 15" 18" 20"

Distances to
Underside of

Mantel

Underside

of Mantel

Shelf

Top of
Fireplace
Opening

Minimum
Noncombustible
Material

12"

10"

8"

6"

1

/2

2

Hood (GA6050

or GA6053)

FLOOR CLEARANCES

A. If installing appliance on the fl oor level,

you must maintain the minimum distance
of 14" to combustibles (see Figure 8).

B. If combustible materials are less than

14" to the fi replace, you must install ap-
pliance at least 5" above the top surface
of combustible fl ooring including tile and
carpet (see Figure 9).

Combustible

14"
Min.

Noncombustible Material

Figure 8 - Minimum Fireplace Clearances

If Installed at Floor Level

Material

Hearth

Figure 7 - Minimum Mantel Clearances

When Using Hood

5"
Min.

Combustible
Material

Figure 9 - Minimum Fireplace Clearances

Above Combustible Flooring

900462-01 NC 11

SuperiorFireplaces.us.com

INSTALLATION

Continued

INSTALLING HEATER BASE
ASSEMBLY

W ARNING: Y ou must secure
this heater to fi replace fl oor. If
not, heater will move when you
adjust controls. Moving heater
may cause a gas leak.

WARNING: If installing in a
sunken fi replace, special care
is needed. You must raise the
fi replace fl oor to allow access to
heater control panel. This will in­sure adequate air fl ow and guard
against sooting and controls
being damaged. Raise fi replace
fl oor with noncombustible mate­rial. Make sure material is secure.

3. Mark screw locations through holes in
front panel of base (see Figure 11). If
installing in a brick-bottom fi replace, mark
screw locations in mortar joint of bricks.

4. Remove heater base from fi replace.

5. Drill holes at marked locations using 3/16"
drill bit.

6. Attach base, through holes in back side pan­els of base, to fi replace fl oor using masonry
screws provided in hardware package (see
Figure 11).

7. Connect to gas supply. See Connecting
To Gas Supply, page 13.

Heater Gas
Regulator

Flexible Gas Hose (Provided
with Models, Install if
allowed by local codes)

CAUTION: Do not pick up
heater base assembly by burn­ers. This could damage heater.
Only handle base assembly by
grates.

IMPORTANT: Make sure the heater burners

are level.

Installation Items Needed

• hardware package (provided with heater)

• approved fl exible gas hose and fi ttings
provided (if allowed by local codes)

• sealant (resistant to propane/LP gas, not
provided)

• electric drill with 3/16” masonry drill bit

Note: Install optional MRC Series receiver
and hand-held remote control kit (see Ac­cessories, page 39) before installing gas log
heater. See installation instructions included
with the kit.

1. Apply pipe joint sealant lightly to male

threads of the 3/8 NPT side of gas fi tting
elbow (provided) and connect to inlet
side of gas control. Remove gas fi tting
from fl exible gas hose (provided) before
connecting to elbow (see Figure 10).

2. Position heater base assembly in fi re-

place.

SuperiorFireplaces.us.com

Figure 10 - Attaching Flexible Gas Hose

to Heater Gas Regulator

Masonry Screw

Figure 11 - Attaching Base to Fireplace

Floor

900462-01 NC12

INSTALLATION

Continued

CONNECTING TO GAS SUPPLY

WARNING: This appliance

with the vent pointing down as shown in Figure
12, page 14. Pointing the vent down protects
it from freezing rain or sleet.

requires a 3/8" NPT (National
Pipe Thread) inlet connection to
the pressure regulator.

CAUTION: Use only new,
black iron or steel pipe. In­ternally-tinned copper tubing

WARNING: A qualifi ed service
person must connect heater to
gas supply. Follow all local codes.

may be used in certain areas.
Check your local codes. Use
pipe of 1/2" diameter or greater
to allow proper gas volume to

CAUTION: Never connect
propane/LP fi replace directly
to the propane/LP supply. This
heater requires an external regu­lator (not supplied). Install the
external regulator between the
heater and propane/LP supply.

WARNING: Never connect
natural gas fi replace to private
(non-utility) gas wells. This
gas is commonly known as
wellhead gas.

Installation Items Needed

Before installing heater, make sure you have
the items listed below.

• external regulator (supplied by installer)

• piping (check local codes)

• sealant (resistant to propane/LP gas)

• equipment shutoff valve *

• test gauge connection *

• sediment trap

• tee joint

• pipe wrench

• approved fl exible gas line with gas connec-
tor (if allowed by local codes) (not provided)

* An equipment shutoff valve with 1/8" NPT
tap is an acceptable alternative to test gauge
connection. Purchase the optional equipment
shutoff valve from your dealer.

For propane/LP units, the installer must
supply an external regulator. The external
regulator will reduce incoming gas pressure.
You must reduce incoming gas pressure to
between 11" and 14" of water. If you do not re­duce incoming gas pressure, heater regulator
damage could occur. Install external regulator

900462-01 NC 13

SuperiorFireplaces.us.com

heater. If pipe is too small, undue
loss of volume will occur.

Installation must include an equipment shutoff
valve, union and plugged 1/8" NPT tap. Locate
NPT tap within reach for test gauge hook up.
NPT tap must be upstream from heater (see
Figure 13, page 14).

IMPORTANT: Install equipment shutoff valve

in an accessible location. The equipment
shutoff valve is for turning on or shutting off
the gas to the appliance.

Check your building codes for any special
requirements for locating equipment shutoff
valve to fi replaces.

Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could
result in clogged heater valves.

WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.

Propane/LP
Supply Tank

Figure 12 - External Regulator With Vent

Pointing Down

External
Regulator
with Vent
Pointing
Down

INSTALLATION

Continued

PROPANE/LP From

External Regulator
(11" W.C.** to 14" W.C.
Pressure)

NATURAL From Gas

Meter (5" W.C.**
to 10.5" W.C.
Pressure)

3" Minimum

Tee Cap Pipe
Joint Nipple

Sediment Trap

Figure 13 - Gas Connection

* Purchase the optional equipment shutoff

valve from your dealer.

**Minimum inlet pressure for purpose of input

adjustment.

We recommend that you install a sediment
trap in supply line as shown in Figure 13.
Locate sediment trap where it is within reach
for cleaning. Install in piping system between
fuel supply and heater. Locate sediment trap
where trapped matter is not likely to freeze.
A sediment trap traps moisture and contami­nants. This keeps them from going into heater
controls. If sediment trap is not installed or is
installed wrong, heater may not run properly.

CAUTION: A void damage to
gas control. Hold gas control
with wrench when connecting
it to gas piping and/or fi ttings.

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.

Equipment Shutoff
Valve With 1/8"
NPT Tap*

Approved

Flexible Gas

Hose (if allowed

by local codes)

Gas

Regulator

WARNING: Never use an open
fl ame to check for a leak. Apply a
noncorrosive leak detection fl uid
to all joints. Bubbles forming show
a leak. Correct all leaks at once.

CAUTION: Make sure exter­nal regulator has been installed
between propane/LP supply and
heater. See guidelines under Con-
necting to Gas Supply, page 13.

PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)

1. Disconnect appliance with its appliance
main gas valve (control valve) and equip­ment shutoff valve from gas supply piping
system. Pressures in excess of 1/2 psig
(3.5 kPa) will damage heater regulator.

2. Cap off open end of gas pipe where equip­ment shutoff valve was connected.

3. Pressurize supply piping system by either
opening propane/LP supply tank valve
for propane/LP gas or opening main gas
valve located on or near gas meter for
natural gas or using compressed air.

4. Check all joints of gas supply piping system.
Apply noncorrosive leak detection fl uid to
all joints. Bubbles forming show a leak.

5. Correct all leaks at once.

6. Reconnect heater and equipment shutoff
valve to gas supply. Check reconnected
fi ttings for leaks.

Test Pressures Equal To or Less Than 1/2
PSIG (3.5 kPa)

1. Close equipment shutoff valve (see Fig­ure 15).

2. Pressurize supply piping system by either
opening propane/LP supply tank valve
for propane/LP gas or opening main gas
valve located on or near gas meter for
natural gas or using compressed air.

3. Check all joints from gas meter to equip­ment shutoff valve for natural gas or pro­pane/LP supply to equipment shutoff valve
for propane/LP (see Figure 15 or Figure

16). Apply noncorrosive leak detection fl uid
to all joints. Bubbles forming show a leak.

4. Correct all leaks at once.

SuperiorFireplaces.us.com

900462-01 NC14

INSTALLATION

Continued

PRESSURE TESTING HEATER GAS
CONNECTIONS

Open equipment shutoff valve (see Figure 14).

1.

2. Open main gas valve located on or near
gas meter for natural gas or open pro­pane/LP supply tank valve.

3. Make sure control knob of heater is in the
OFF position.

4. Check all joints from gas meter to equip­ment shutoff valve for natural gas or pro­pane/LP supply to equipment shutoff valve
for propane/LP (see Figure 15, or Figure

16). Apply noncorrosive leak detection fl uid
to all joints. Bubbles forming show a leak.

5. Correct all leaks at once.

6. Light heater (see Operation, page 22).

Check all other internal joints for leaks.

Turn off heater (see To Turn Off Gas to

7.

Appliance, page 22 for Remote models.

Equipment
Shutoff
Valve

Open

Closed

Propane/LP
Supply Tank

Figure 15 - Checking Gas Joints

(Propane/LP Only)

Equipment
Shutoff Valve

Gas Meter

Figure 16 - Checking Gas Joints (Natural

Equipment Shutoff Valve

Control Valve
Location

Control Valve
Location

Gas Only)

Figure 14 - Equipment Shutoff Valve

900462-01 NC 15

SuperiorFireplaces.us.com