BuckMaster 81 User manual

FIREPLACE INSERT & FREESTANDING
MODEL 81
NON-CATALYTIC UNIT
FEATURES
PREPARATIONS INSTALLATION
OPERATION MAINTENANCE SAFETY
SAFETY NOTICE
IF THIS HEATER IS NOT PROPERLY INSTALLED, A HOUSE FIRE MAY
RESULT. FOR YOUR SAFETY, FOLLOW THE INSTALLATION INSTRUCTIONS.
CONTACT THE AUTHORITY HAVING JURISDICTION (SUCH AS MUNICIPAL
BUILDING DEPARTMENT, FIRE DEPARTMENT, FIRE PREVENTION BUREAU,
etc.) CONSULT BEFORE INSTALLATION TO DETERMINE THE NEED TO
OBTAIN A PERMIT. KEEP THESE INSTRUCTIONS FOR FUTURE USE.
TESTED AND LISTED BY: PFS/TECO, COTTAGE GROVE, WI
MANUFACTURED BY NEW BUCK CORPORATION
200 ETHAN ALLEN DRIVE
P.O. BOX 69
SPRUCE PINE, N.C. 28777
www.buckstove.com Revised May 2020

TABLE OF CONTENTS
Wood Stove Description ............................................................................................................... 2
Important Instructions................................................................................................................... 3
SECTION I: Introduction ............................................................................................................. 4
SECTION II: Masonry Insert Installation..................................................................................... 5
Chimney Heights .......................................................................................................................... 6
Floor Protection ............................................................................................................................ 7
Installation Preparation / Masonry Fireplace Installation Options ............................................. 10
Mounting Trim Panels ................................................................................................................ 12
SECTION III: Pre-Fab Insert Installation................................................................................... 15
SECTION IV: Residential Freestanding Installation.................................................................. 16
Freestanding Installation Clearances .....................................................................................24-25
Installation of Close Clearances Shields..................................................................................... 26
SECTION V: Freestanding Permanently Located Manufactured Home Installation................. 27
Outside Air Installation............................................................................................................... 31
SECTION VI: Wood Heater Safety............................................................................................ 34
SECTION VII: Operation/Efficiency ......................................................................................... 36
Guide To Different Burning Qualities Of Wood ........................................................................ 37
MANTINACE: Door Gasket Replacement ............................................................................... 38
Brick Layout ............................................................................................................................... 39
Secondary Air Tube Replacement .............................................................................................. 40
Electrical Replacement Motor / Thermostat / Rheostat Replacement ........................................ 41
Electrical Wiring Diagram/ Room Air Blower Operation ......................................................... 42
Troubleshooting .......................................................................................................................... 44
Parts List ..................................................................................................................................... 45
Warranty ..................................................................................................................................... 46

Page 2
EPA COMPLIANCE STATUS
This manual describes installation and operation of the New Buck Corporation Model 81 wood heater.
This heater meets the U.S. Environmental Protection Agency’s Emission limits for wood heaters sold
after May, 15 2020. Under specific test conditions, this heater has been shown to deliver heat at rates
ranging from approximately 13,800 to 59,500 BTU/hr. A weighted average was used to calculate the
overall efficiency across all of the burn rate categories using the higher heating value (HHV 69.8%).
MODEL 81 WOOD STOVE
1. Secondary air tubes
2. Blower control (rheostat)
3. Primary air control
4. Warm air outlets
5. Baffles (interior of stove)
6. Air inlet
7. Door
8. Hearth extension
9. Power cord
10. Legs
11. Automatic/off/man. switch
12. Brass cap
13. Hinge Block
14. Brass overlays
15. Brass overlay mounting
screws
16. Glass clips
17. Hearth Brass
18. Door Gasket
19. Side glass
20. Leveling screws
21. Firebrick
22. Motor
23. Motor mount bracket
24. Cover Door
25. Cover door screws
26. Shot gun air box
27. Ash pan
28. Disc thermostat
29. Door handle & brass spring handle
30. Air wash screen
31. Glass gasket
32. Cover door hinge
33. Magnet holder
34. Cover door Magnet
35. Door latch
36. Door latch screw
37. Top Baffle Board
38. Hinge pins
39. 6" Flue exit
(4)
(30)
(15)
(18)
(14)
(35)& (36)
(19)
(29) (25)
(3)
(11)
(2)
(9)
(28)
(20)
(24)
(22)
(21)
(23)
(32)
(27)
6
(10)
(34)
(33)
(17)
(8)
(31) (16)
(38)
(13)
(12)
(5)
(37)
(26)
(7) (1) (39)

Page 3
INSTALLATION, OPERATION AND
MAINTENANCE INSTRUCTIONS
MODEL 81
BEFORE INSTALLING YOUR NEW BUCK STOVE,
READ THE ENTIRE INSTRUCTION MANUAL
IMPORTANT INSTRUCTIONS
WARNING
THIS UNIT GENERATES HIGH HEAT, SO TREAT IT WITH CARE. HOT WHILE IN
OPERATION. KEEP CHILDREN, CLOTHING AND FURNITURE AWAY. CONTACT
MAY CAUSE SKIN BURNS. DO NOT USE CHEMICALS OR FLUIDS TO START THE
FIRE. DO NOT BURN GARBAGE OR FLAMMABLE FLUIDS. DO NOT CONNECT TO
ANY DISTRIBUTION DUCT OR SYSTEM. READ ALL INSTRUCTIONS BEFORE
INSTALLING AND USING THE APPLIANCE. FAILURE TO FOLLOW INSTRUCTIONS
MAY RESULT IN PROPERTY DAMAGE, BODILY INJURY OR EVEN DEATH. SAVE
THESE INSTRUCTIONS FOR FUTURE REFERENCES.
• The New Buck Corp. non-catalytic Model 81 has been tested to UL 1482 Standards and
listed by PFS/TECO. Standard for Room Heaters, Solid Fuel Type.
• Install and operate your unit according to instructions provided in this manual. Local build-
ing codes may apply; therefore, contact your local building inspector for necessary installa-
tion requirements and permits which may go beyond these instructions. Contact your insur-
ance company for coverage and installation inspection.
• DO NOT INSTALL IN SLEEPING ROOMS.
• NOTE: When burning any unit or appliance that combusts fuel for heat, such as coal,
oil, wood or natural and (L.P.) liquid petroleum gas. Correctly place monitors in those
areas that are expected to produce Carbon Monoxide (CO). Consult with your local
fire safety officials to learn more
• Examine the masonry fireplace and chimney prior to installation of fireplace accessory to
determine that construction meets the minimum fireplace construction requirements
illustrated in the instructions. Make sure that it is free from cracks, loose mortar, creosote
deposits and other blockage, or other signs of deterioration.
CAUTION
DO NOT USE MORE THAN ONE STOVE TO A CHIMNEY. DO NOT USE A FLUE
INTENDED FOR A GAS APPLIANCE. DO NOT CONNECT THIS UNIT TO A CHIMNEY
FLUE SERVING ANOTHER APPLIANCE. DO NOT CONNECT TO ANY AIR
DISTRIBUTION DUCT OR SYSTEM.
• A factory-built pre-fabricated chimney may be used for your units when installed in
compliance with manufacturer's specification and uniform building code.

Page 4
CAUTION
YOUR CHIMNEY MUST BE CORRECTLY SIZED. A CHIMNEY THAT IS TOO SMALL
OR LARGE IN DIAMETER, OR TOO SHORT, CAN CAUSE YOUR STOVE TO SPILL
SMOKE WHEN THE DOOR IS OPENED.
SECTION I
INTRODUCTION
Your new MODEL 81 is a non-catalytic unit designed to meet the most stringent
emissions standards without the use of a catalytic combustor. This effect is achieved through
the use of a secondary air which is mixed with primary air in unit's firebox.
For peak performance, we suggest the use of natural seasoned hard wood, loading wood from
front to rear.
NOTE: Soft woods such as pine, create more creosote, clogging of chimney and produce a less effi-
cient burn performance.
You should not burn trash or garbage, artificial or paper logs, gift wrapping, treated or painted
wood or any type of coal or flammable fluids.
DO NOT USE CHEMICALS OR FLUIDS TO START THE FIRE.
DO NOT BURN GARBAGE OR FLAMMABLE FLUIDS.”
The primary air, which is controlled by the user, burns the wood. Secondary air is admitted into
firebox through secondary air tubes at top of firebox. This secondary air burns impurities in
smoke released from the initial wood burning. The temperature necessary for this combustion is
maintained through the firebrick refractory. If any more technical information is necessary,
contact your local dealer.
This heater is equipped with a standard room air blower. For operation and use of these
electrical assemblies, see instructions provided in this manual starting on page 37.
*Model 81: Motor Assembly—MA 910714

Page 5
SECTION II
MASONRY INSERT INSTALLATION
The Model 81 may be installed using an all masonry fireplace built in accordance with the
Uniform Building Code and National Fire Protection Association (NFPA). The first step in
this type of installation is to determine acceptability of fireplace and chimney for use with a
woodstove. Both construction and condition of fireplace are important
considerations when installing a woodstove. The chimney should extend at least 3' above roof
and at least 2' above any point of roof within 10'. (See Page 6 Figure 4).
CAUTION
REMEMBER TO HAVE YOUR CHIMNEY INSPECTED FOR LEAKS AND BLOCKAGE
BEFORE YOU INSTALL YOUR STOVE. DO NOT CONNECT THIS UNIT TO A
CHIMNEY FLUE SERVING ANOTHER APPLIANCE.
MINIMUM CLEARANCE MASONRY INSERT
A. Side Wall Combustible
B. Front Floor Protector
C. Side Floor Protector
D. Side Wood Trim
E. Top Wood Trim
F. Mantel or Brackets
12"
16"
8"
7"
10"
21"
MODEL 81
1. The hearth must be of masonry construction and must extend a minimum of 16" in front of
firebox opening and a minimum of 8" to either side of firebox opening.
2. If there is not minimum hearth protection from front of firebox opening and front of
masonry hearth, a floor protector must be used in front of hearth to protect combustible
materials. The floor protector must have a minimum R-Value of 1.1 non-combustible
material.(See Page 7).
F
B
A
E
C
D
F
B
A
E
C
D

Page 6
Stack wood in crisscross pattern
under a shelter to allow air flow
to dry wood and to keep wood
from rain. Green wood may
have 50-60% moisture content.
Wood seasoned outside
uncovered may have 40%
moisture content. Wood
properly seasoned in a covered
environment will have less than
20% moisture content.
3 FT.
2 FT.
LESS THAN
10 FT.
2 FT.
10 FT.
GREATER
THAN
10 FT.
3 FT.
METAL
CHIMNEY
MASONRY
CHIMNEY
2 FT. MINIMUM HEIGHT ABOVE THE
ROOF WITHIN 10 FT. HORIZONTALLY
CHIMNEY “10 FT.” RULE (MINIMUM HEIGHTS)
NOTE: MINIMUM CHIMNEY HEIGHT 15 FT.
CHIMNEY HEIGHTS
HOW TO STACK WOOD
FIGURE 4
FIGURE 5

Page 7
MINIMUM CLEARANCES
Floor Protection:
When installing a heater, a floor protector must be used. Floor protector must have a minimum
of 1.1 R-Value non-combustible material.
How to use alternate materials and how to calculate equivalent thickness
Most people have heard of R-Values, which are used for rating common building materials such
as fiberglass insulation and glass. However, many texts which cover stoves and fireplaces use K
-Values instead of R-Values. Although the two are somewhat related, there are differences.
R-Value: The higher the R-Value, the better the insulating properties of the subject materials. R
-Values are most often used to express the thermal resistance (ability to stop heat flow) of a
building wall, ceiling or floor. Because of this, most R-Values are calculated at normal tempera-
tures of approx. 75 F. R-Values are easy to add together so calculating the total R-Value of a
wall is simply done by adding the values for the sheetrock, insulation, sheathing and siding.
K-value is a measure of heat conductivity of a particular material. Specifically, it is the measure
of the amount of heat, in BTUs per hour, that will be transmitted through one square foot of ma-
terial that is one inch thick to cause a temperature change of one degree Fahrenheit from one
side of the material to the other. The lower the K-value for a material, the better it insulates. If
the K-value of the material is known, the R-value per inch can be determined by dividing 1 by
the K-value (R-value per inch = 1/K value). The LOWER a K-Value, the better its performance
as an insulator.
R or K values have nothing to do with whether a material is flame proof, flame resistant or
combustible. Styrofoam, cork, wood and polyester are just some examples of materials which
are good insulators but will burn or smoke dangerously when exposed to excess heat.
Technical - For those who desire to calculate their own K or R values, please use the following
formulas:
1. R value can be calculated by dividing the thickness by the K value.
For US calculations, we use inches as the unit of measurement.
“In the inch-pound units, thermal resistance is measured in degrees F times square feet of area
times hours of time per Btus of heat flow.”
R-value = thickness / K-value
2. K value is the inverse of the R-Value. If one is known, the other can be calculated.
“units of Btu-inch/hour per square foot per degree F”
Thickness/k value = R value
or:
Divide the inches of thickness by R.
k= inches of thickness / R

Page 8
K-Value Example: A wood stove may call for a floor which has a K factor of 1 or less. A product such
as Micore 300 Board from USG has a K-Value of approx .43 per inch. Therefore a 1/2” thickness of this
board would have a K-Value of .86, which meets the requirement of our example stove.
R-Value Example: A stove or fireplace may call for an floor with an R-Value of 1.5. The same board
above is rated as having an R-Value of 2.33 for a one inch thickness. Therefore, 3/4” of the Micore 300
Board would meet the specifications for this stove.
Summary: R and K values are related, but K is the value commonly used for specifying materials for use
with stoves and fireplaces. Be sure that your choice of insulating material for high temperature applica-
tions is noncombustible.
With K values, the lower value is a better insulator. With R Values, the highest number is better.
For low profile hearths, it is best to use manufactured materials such as Micore and Cement Board
(Durock, Wonderboard, etc.) as these will allow hearth thicknesses of from 1/4” to 2” with most stoves
and fireplaces. Most other common building materials will require at least 3” of thickness and usually
much more.

Page 9
Example of Hearth Calculations - this is for a Hearth requirement of approx R=1.15 (figures
taken from Ceramic Tile manufacturers trade association)
The assembly that we will evaluate is a 3/8” layer of Micore 230 and a layer of ½” Util-A-
Crete. The first step is to convert the k values of the materials in question into R so that we may
add them up and determine if they will provide the necessary insulation value required by the
manufacturer.
Micore 230 has a k value of .43 so –
1 divided by k = 2.32 times the thickness .375 (3/8”) = 0.87
Util-A-Crete (cement tile backer board) has a k value of 1.6 so – 1 divided by k = .625 times the
thickness .5 (1/2”) = 0.3125
Add the values together 0.87 plus 0.3125 = 1.1825 This R- value is an acceptable assembly.
What if we decide to use only one material? In this example, only Util-A-Crete cement board?
We could use the published R-Value of Util-A-Crete which is .31 in the ½” material and add
them up to the value of the minimum required which is R=1.16
1.16 divided by .31 = 3.74 This assembly would require 3.74 layers of ½” Util-A-Crete to reach
the necessary R-value required. Obviously, you would have to round up to the next layer, which
would mean that you would have two inches of Util-A-Crete.

Page 10
NEW BUCK CORPORATION HIGHLY RECOMMENDS A
PROFESSIONAL INSTALLER TO INSTALL YOUR UNIT.
PLEASE CONTACT YOUR DEALER
POSSIBLE TOOLS NEEDED FOR INSTALLATION
If you decide to install your own stove, there are several hand tools you may need to do the job.
If you do not already have them, they are readily available at most hardware stores.
Caulking gun
Large adjustable wrench (may not be needed)
Drop cloths or newspapers
Vacuum cleaner or whisk broom
Flashlight
1 tube of RTV silicone, Code 103 or 106, or high temperature rubber cement rated between
450o F- 600o F
7/32" drill bit and drill
Socket/Ratchet Set
INSTALLATION PREPARATION
Fireplace:
1. Relocate furniture and other materials away from front of fireplace to allow free access to
fireplace.
2. Cover hearth and adjacent floor areas with a drop cloths to protect from soiling or marring
surface.
3. Remove existing fireplace damper plate.
4. Thoroughly clean fireplace of ashes and soot.
5. Check chimney and smoke chamber for excessive buildup of creosote or soot. Also, check
for obstructions, such as birds nests. If chimney is excessively dirty, clean it or have
someone clean it professionally BEFORE installing or using room heater.
6. If fireplace has an ash dump or outside air provision, these must be sealed off with metal or
tightly packed non-combustible insulation to prevent cold air from entering fireplace
chamber.
MASONRY INSERT INSTALLATION OPTIONS
This unit (appliance) may be installed into an all masonry fireplace, built in accordance with
Uniform Building Code and National Fire Protection Association (NFPA 211).
NOTE: Check with local building officials for any permits required for installation of this unit
and notify your insurance company before proceeding with installation.
In cases, such as improperly drawing fireplaces, oversize flue liners are needed to meet codes in
certain areas it is recommended that one of the flowing procedures be followed:
A. A Chimney Connector can be installed from appliance flue exit through damper, plus
a air-tight face seal. (See Page 11, Figure 5, Option (A).
B. A listed Direct Connect can be installed from appliance flue exit through damper,
into first section of flue liner with air-tight seal. (See Page 11, Figure 6, Option (B).
C. A Positive Connect can be installed from appliance flue exit continuing up through
entire chimney and exiting at top of chimney. (See Page 11, Figure 7, Option (C).

Page 11
FIGURE 6, OPTION (B)
REMOVE
DAMPER
OR WIRE IT
OPEN
AIRTIGHT
INSULATED
& CLEANED
OUT
BLOCK-OFF PLATE OR
DAMPER ADAPTER
SEAL TRIM PANELS
WITH INSULATION
OR HIGH
TEMPERATURE
CAULK
STAINLESS
STEEL CHIMNEY
CONNECTOR
MUST EXTEND 1’
PAST THE BLOCK
-OFF PLATE OR
TO THE FLUE
LINER
NOTE: Follow installation instruction
with Direct Connection Kit.
(Kit sold separately)
SAFETY NOTICE
If this appliance is not properly installed, a house fire may result. For your safety, follow the
installation directions. Contact local building or fire officials about restrictions and installation
STARTER PIPE
SEAL TRIM PANELS AND UNDER
FRONT OF STOVE UNIT WITH
INSULATION OR HIGH
TEMPERATURE CAULK
FIGURE 5, OPTION (A)
REMOVE
DAMPER
OR WIRE
IT OPEN
AIRTIGHT
INSULATED &
CLEANED OUT
NOTE: New Buck Corporation grants no warranty,
implied or stated, for the installation or maintenance
of your appliance, and assumes no responsibility of
any consequential damage (s).
FIGURE 7, OPTION (C)
NOTE: Follow installation
instruction with Positive
Connection Kit.
(Kit sold separately)
TRIM PANELS
CAP (PREVENTS
WATER FROM
ENTERING)
FLUE
LINER
THE LINER MUST BE
STAINLESS STEEL
CONNECTOR OR FLEXIBLE
VENT. FOLLOW THE LINER
MANUFACTURE’S
INSTRUCTIONS FOR
INSTALLATION AND
SUPPORT
AIRTIGHT
INSULATED
& CLEANED
OUT
REMOVE
DAMPER
OR WIRE
IT OPEN
INSTALL A NON-COMBUSTIBLE
COVER PLATE TO PREVENT
WATER FROM ENTERING THE
CHIMNEY

Page 12
INSTALLATION PROCEDURE
Follow installation procedures on direct connect or positive connect kit you are using and install
heater connect kit in fireplace.
MOUNTING TRIM PANELS
Mark mounting position of trim panels as
follows:
1. Center stove in fireplace opening.
2. Place side trim panels flat against face of
fireplace. Mark front edge of trim panel
with a pencil to make a vertical reference
line. (See Figure 9).
3. Place top (long) trim panel on top of unit.
The panel should be flat against the outside
face of fireplace and standing vertically.
Mark along lower edge of trim panel with a
pencil to make a reference line for
mounting.
4. Slide unit out of fireplace far enough to
work behind trim panel reference lines.
FIGURE 9
5. Mount side trim panels. (See Figure 9).
a. Position side trim panel on reference line.
b. Drill mounting holes in center of side trim panel mounting brackets to allow for adjust-
ment in and out if necessary.
c. Mount trim panel using self-tapping screws provided.
6. Place top trim panel on reference mark, be sure the panel sits in front of the side trim panels.
Place the top trim panel mounting bracket (supplied) behind the top trim (See Figure 9).
Position so the rear lip of top trim panel overlaps the mounting bracket. Drill mounting
holes in top of stove using holes in bracket as guide. Tighten with self-tapping screws
provided.
7. Slide unit back into fireplace. Check to be sure that trim panels are properly positioned and
lie flat against front of fireplace. If one or more of panels is out of position, slide unit out
and reset by loosening mounting screws and reposition in slot.
8. After you get the panels in the correct position. Slide unit back into fireplace and set top
trim panel aside and finish hooking up the pipe to the top of the unit.
9. Reinstall top trim panel by sliding rear lip of top trim panel underneath front lip of
mounting bracket already secured to top of unit.
SIDE TRIM PANEL TOP TRIM PANEL
TOP TRIM PANEL MOUNTING
BRACKET

Page 13
10. Obtain outer black trim kit provided with insert kit and slip over top and sides of trim
panels. (See Figure 10).
11. Using insulation provided, peel and stick to back of panels overlapping fireplace dimensions
by 1" on each side and top. (See Figure 11).
12. Next using high heat silicone or furnace cement run heavy bead of caulking around where
panels meet the stove. (See Figure 11).
13. Using the bar, lift stove up in front. Place insulation across front and surface of hearth or
bottom of fireplace to make complete seal.
14. To check seal of panels, use candle flame and go around entire area sealed by silicone and
insulation. If flame leans toward inside of fireplace, add additional insulation. This ensures
an airtight seal.
FINAL CHECK
1. Recheck specified clearances.
2. Remove all foreign material from firebox area.
3. Primary Air Control: The primary air intake draft control is located at right bottom side of
hearth. It is operated by moving handle OUT to open (to allow air into the firebox) or IN to
control or close off air into firebox. (See Figure 10).
4. Plug power cord into a 115V AC outlet. Set switch to “Manual” and rheostat to “High”
position to ensure motor operates properly. Route power cord to prevent damage to cord
insulation from heat and sharp objects. Keep cord out of way of traffic to prevent damage
caused by tripping, etc.
Place crumpled pieces of newspaper in stove. Light it and close door. Ensure that stove
draws properly through primary draft.
6. Check for smoke leaks around door.
7. Open door and check for smoke escaping from front of stove. Smoking usually indicates a
defective or poorly positioned chimney. Some chimneys with a marginal draft can be pre-
heated by lighting newspaper and holding it near open damper with a poker or fire tong.
Once chimney heats up, a proper draft can usually be obtained.
HIGH TEMP
SILICONE
INSULATION
FIGURE 11
Top Trim Panel Outer Trim
Primary Air Control
Side Trim Panel
FIGURE 10

Page 14
CAUTION
THE UNIT IS PAINTED WITH A SPECIALLY FORMULATED HIGH
TEMPERATURE PAINT THAT CURES DURING THE FIRST TWO OR THREE
FIRINGS. YOU MAY NOTICE A SLIGHT SMOKING EFFECT AND AN ODOR OF
BURNING PAINT WHEN YOU BUILD THE FIRST FIRES. THIS IS NORMAL AND
IS NOT A CAUSE FOR ALARM. IN SOME CASES, THESE FUMES WILL
ACTIVATE A SMOKE ALARM. OPENING A WINDOW NEAR THE UNIT WILL
ALLOW THESE FUMES TO ESCAPE. DO NOT BUILD A LARGE, ROARING FIRE
UNTIL THIS CURING IS COMPLETE OR HEATER FINISH MAY BE DAMAGED.
The connector and/or chimney should be inspected at least once a month during heating season
to determine if a creosote buildup has occurred.
CAUTION
NEVER USE GASOLINE, GASOLINE-TYPE LANTERN FUEL, KEROSENE,
CHARCOAL LIGHTER FLUID OR SIMILAR LIQUIDS TO START OR "FRESHEN
UP" A FIRE IN THE HEATER. KEEP ALL SUCH LIQUIDS WELL AWAY FROM
THE STOVE WHEN IT IS IN USE. ALL FLUIDS OF THIS TYPE GIVE OFF
VOLATILE FUMES AND CAN AND WILL EXPLODE! DON'T TAKE A CHANCE
WITH THE SAFETY OF YOUR HOME AND FAMILY.

Page 15
SECTION III
PRE-FAB INSERT
INSTALLATION
The Model 81 may be installed into any UL listed pre-fabricated fireplace that is large enough
to accept it.
NOTE: When installing Model 81 into a Pre-Fab Zero-Clearance fireplace, a UL-1777 LINER
must be installed the Full Length of chimney and attached to flue exit of insert.
NOTE: The ash lip, smoke baffle and smoke shelf of pre-fab fireplace may be removed if
necessary to provide room for these models. Any other alteration to unit will void ALL New
Buck Corporation responsibility and liability. The warning label below must be attached to
back of fireplace.
NOTE: Plug power cord into a 115V AC outlet. Set switch to “Manual” and rheostat to
“High” position to ensure motor operates properly. Route power cord to prevent damage to cord
insulation from heat and sharp objects. Keep cord out of way of traffic to prevent damage
caused by tripping, etc.
NOTE: DO NOT BLOCK ANY EXISTING LOUVERS OR VENTS ON EXISTING
PRE-FAB WITH ANY TRIM PANELS FOR MODEL 81.
Except for “notes” above, please follow instruction of masonry installation, Section II.
WARNING: This fireplace must be
restored to it’s original condition for safe use
if the fireplace insert is removed.

Page 16
SECTION IV
RESIDENTIAL FREESTANDING INSTALLATION
Select an installation location that will give best airflow from front of heater to
remainder of home.
PREPARING STOVE FOR INSTALLATION
1. Inspect unit for any obvious physical damage.
2. Plug power cord into a 115V AC outlet. Set switch to “Manual” and rheostat to “High” position to
ensure motor operates properly. Route power cord to prevent damage to cord insulation from heat and
sharp objects. Keep cord out of way of traffic to prevent damage caused by tripping, etc.
3. Check primary air draft control to ensure that it slides freely. Primary air control located on right side
of stove under hearth (See Figure 12).
4. Remove the manual bag and items from within firebox. Spread a dropcloth on floor behind heater.
Next, tilt heater so that back is on drop cloth.
5. ( Leg Kit ): If legs are to be used, obtain four legs, attach legs to holes in bottom of unit with bolts
and washers supplied with leg kit. (See Figure 12).
6. ( Pedestal Kit ): If pedestal kit is being used an outside air is required for residential freestanding
installation (page 25 Out Side Air Installation). Open freestanding kit and obtain stand. Place stand
against bottom of heater (angle side to heater). Center stand front to rear and also center stand left and
right. Mark screw locations with pen or pencil on bottom of stove through outer holes of stand
mounting angles. Set stand aside and drill four 7/32" holes in heater bottom. Then mount stand to
bottom of heater with screws provided. (See Figure 13).
7. Obtain four (4) 3/16" self-tapping screws and secure stand to heater.
8. Reposition heater to upright position.
FOUR NEW HOLES
FIGURE 12 FIGURE 13
PRIMARY AIR
DRAFT CONTROL
PEDESTAL
HOLES FOR MOUNTING PEDESTAL

Page 17
MINIMUM CLEARANCES
Floor Protection:
When installing a heater, a floor protector must be used. Floor protector must have a minimum
of 1.1 R-Value non-combustible material.
How to use alternate materials and how to calculate equivalent thickness
Most people have heard of R-Values, which are used for rating common building materials such
as fiberglass insulation and glass. However, many texts which cover stoves and fireplaces use K
-Values instead of R-Values. Although the two are somewhat related, there are differences.
R-Value: The higher the R-Value, the better the insulating properties of the subject materials. R
-Values are most often used to express the thermal resistance (ability to stop heat flow) of a
building wall, ceiling or floor. Because of this, most R-Values are calculated at normal tempera-
tures of approx. 75 F. R-Values are easy to add together so calculating the total R-Value of a
wall is simply done by adding the values for the sheetrock, insulation, sheathing and siding.
K-value is a measure of heat conductivity of a particular material. Specifically, it is the measure
of the amount of heat, in BTUs per hour, that will be transmitted through one square foot of ma-
terial that is one inch thick to cause a temperature change of one degree Fahrenheit from one
side of the material to the other. The lower the K-value for a material, the better it insulates. If
the K-value of the material is known, the R-value per inch can be determined by dividing 1 by
the K-value (R-value per inch = 1/K value). The LOWER a K-Value, the better its performance
as an insulator.
R or K values have nothing to do with whether a material is flame proof, flame resistant or
combustible. Styrofoam, cork, wood and polyester are just some examples of materials which
are good insulators but will burn or smoke dangerously when exposed to excess heat.
Technical - For those who desire to calculate their own K or R values, please use the following
formulas:
1. R value can be calculated by dividing the thickness by the K value.
For US calculations, we use inches as the unit of measurement.
“In the inch-pound units, thermal resistance is measured in degrees F times square feet of area
times hours of time per Btus of heat flow.”
R-value = thickness / K-value
2. K value is the inverse of the R-Value. If one is known, the other can be calculated.
“units of Btu-inch/hour per square foot per degree F”
Thickness/k value = R value
or:
Divide the inches of thickness by R.
k= inches of thickness / R

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K-Value Example: A wood stove may call for a floor which has a K factor of 1 or less. A product such
as Micore 300 Board from USG has a K-Value of approx .43 per inch. Therefore a 1/2” thickness of this
board would have a K-Value of .86, which meets the requirement of our example stove.
R-Value Example: A stove or fireplace may call for an floor with an R-Value of 1.5. The same board
above is rated as having an R-Value of 2.33 for a one inch thickness. Therefore, 3/4” of the Micore 300
Board would meet the specifications for this stove.
Summary: R and K values are related, but K is the value commonly used for specifying materials for use
with stoves and fireplaces. Be sure that your choice of insulating material for high temperature applica-
tions is noncombustible.
With K values, the lower value is a better insulator. With R Values, the highest number is better.
For low profile hearths, it is best to use manufactured materials such as Micore and Cement Board
(Durock, Wonderboard, etc.) as these will allow hearth thicknesses of from 1/4” to 2” with most stoves
and fireplaces. Most other common building materials will require at least 3” of thickness and usually
much more.