BuckMaster 74NC Manual

FIREPLACE INSERT & FREESTANDING
MODEL 74
NON-CATALYTIC UNIT
FEATURES
PREPARATIONS INSTALLATION
OPERATION MAINTENANCE SAFETY
Buck Stove
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 (828)-765-6144
Revised July 2020

TABLE OF CONTENTS
Important Instructions .................................................................................................................................................2
Stove Identification .....................................................................................................................................................3
SECTION I: Introduction............................................................................................................................................4
Type of wood and loading procedures ........................................................................................................................4
Chimney Heights ........................................................................................................................................................5
SECTION II: Masonry Insert Installation ...................................................................................................................6
Installation Preparation-Fireplace ...............................................................................................................................7
Mounting Trim Panels ................................................................................................................................................9
SECTION III: Pre-Fab Insert Installation .................................................................................................................12
SECTION IV: Residential Freestanding Installation ................................................................................................13
Floor Protection ........................................................................................................................................................14
Ceiling Exit Using Single Wall Pipe.........................................................................................................................15
Wall Exit to Metal Tee-Box .....................................................................................................................................16
Wall Exit Masonry Flue Using Single Wall Pipe......................................................................................................17
Ceiling Exit-Close Clearance....................................................................................................................................18
Clearances To Combustibles Freestanding Without Close Clearance
Shields and Using Single Wall Pipe..........................................................................................................................20
Residential / Permanently Located Manufactured Home Double Wall or Shielded Single Wall
Connector With Close Clearance Shields .................................................................................................................21
Residential / Permanently Located Manufactured Home Double Wall or Shielded Single Wall
Connector Without Close Clearance Shields ............................................................................................................22
Installation of Close Clearance Shields (Optional) ...................................................................................................23
Alcove Installation Double or Shielded Single Wall Connector With Close
Clearance Shields......................................................................................................................................................24
SECTION V: Freestanding Permanently Located Manufactured Home Installation................................................25
Out Side Air Installation ..................................................................................................................................... 26-27
SECTION VI: Wood Heater Safety ..........................................................................................................................31
SECTION VII: Operation .........................................................................................................................................32
Guide To The Different Burning Qualities of Wood ................................................................................................33
SECTION IV Maintenance:
Door Gasket Replacement.........................................................................................................................................34
Brick Layout .............................................................................................................................................................35
Secondary Air Tubes Replacement ...........................................................................................................................36
Secondary Air Tubes Identification Diagram and Tube location..............................................................................37
Optional Motor Installation................................................................................................................................. 38-39
Check Chimney.........................................................................................................................................................40
Cleaning Heater / Care of Glass................................................................................................................................41
Troubleshooting .................................................................................................................................................. 42-43
Replacement Parts.....................................................................................................................................................44
Warranty ...................................................................................................................................................................45

Page 2
INSTALLATION, OPERATION AND
MAINTENANCE INSTRUCTIONS
MODEL 74NC
BEFORE INSTALLING YOUR NEW BUCK STOVE,
READ THE ENTIRE INSTRUCTION MANUAL
IMPORTANT INSTRUCTIONS
• The New Buck Corp. non-catalytic Model 74NC non-catalytic systems have been tested to UL
1482 Standards and certified by PFS/TECO. Standard for Room Heaters, Solid Fuel Type.
• Install and operate your unit according to instructions provided in this manual. Local building codes
may apply; therefore, contact your local building inspector or fire marshal for necessary installation
requirements and permits which may go beyond these instructions. Contact your insurance
company for coverage and installation inspection.
• If appliance is installed in permanently located manufactured homes:
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 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.
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. AVE THESE INSTRUCTIONS FOR FUTURE
REFERENCES.
CAUTION
DO NOT USE MORE THAN ONE STOVE PER CHIMNEY. DO NOT USE A FLUE INTENDED
FOR A GAS APPLIANCE. DO NOT CONNECT TO ANY DISTRIBUTION DUCT OR SYSTEM.

Page 3
1. 6" Flue Exit
2. Warm Air Outlets
3. Air Wash and Screen
4. Secondary Air Tubes
5. Top Baffle Board
6. Fire Blanket
7. Hinge Block
8. Hinge Pins
9. Door
10. Door Glass
11. Glass Clips Small; Side, Top, Bottom
12. Door Gasket
13. Door Glass Gasket
14. Door Handle
15. Spring Handle
16. -Door Latch
-Door Latch Screw
-Door Handle Bushing
-Door Handle Spacer
-Door Latch Flat Washer
-Door Latch Screws (Phillips Head)
-Door Latch Screws (Allan Head)
17. Firebrick
18. Hearth Extension
19. Cover Door
20. Primary Air Control
21. Shotgun Air Box
13
13
2
10
2
16
4
14
15
21
19
20
17
12
11
7
8
18
5
EPA COMPLIANCE STATUS
This manual describes installation and operation of the New Buck Corporation Model 74 wood heater. This
heater meets the U.S. Environmental Protection Agency’s Emission limits for wood heaters and is in
compliance with 2020 particulate emission standard. Under specific test conditions, this heater has been
shown to deliver heat at rates ranging from approximately 13,300 to 52,400 BTU/hr for the Model 74.
A weighted average was used to calculate the overall efficiency across all of the burn rate categories using the
higher heating value (HHV73%).
MODEL 74 WOOD STOVE IDENTIFICATION
9
6

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 DOOR IS OPENED.
SECTION I
INTRODUCTION
Your new MODEL 74 is a non-catalytic unit designed to meet the most stringent emissions
standards without use of a catalytic combustor. This effect is achieved through use of
secondary air which is mixed with primary air in unit’s firebox.
For peak performance, we suggest 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 efficient
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 user, burns wood. Secondary air is admitted into firebox
through secondary air tubes at top of firebox. This secondary air burns impurities in smoke
released from initial wood burning. The temperature necessary for this combustion is
maintained through firebrick refractory. If any more technical information is necessary, contact
your local dealer.
Under specific test conditions this heater has been shown to deliver heat at rates ranging from
approximately 13,300 to 52,400 BTU/HR.
This unit may also be used with optional room air blower. To order optional motor assembly
you must specify stove model number and give following part number:
*Model 74: Motor Assembly—MA 5126715
For operation and use of this electrical assembly, see instructions provided with motor assembly
kit.

Page 5
Stack wood in criss-cross
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

Page 6
SECTION II
MASONRY INSERT INSTALLATION
The Model 74 may be installed using an all masonry fireplace built in accordance with
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 5).
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
16"
20"
8"
10"
10"
24"
MODEL 74
1. The hearth must be of masonry construction and must extend a minimum of 20" in front of
firebox opening and aminimum of 8" to either side of firebox opening.
2. If there is not minimum hearth protection from front of firebox opening and front of ma-
sonry hearth, a floor protector must be used in front of hearth to protect combustible
materials. The floor protector must be 3/8" minimum thickness noncombustible material or
equivalent.(See Page 14).
F
B
A
E
C
D
F
B
A
E
C
D

Page 7
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 bird’s 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
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 fireplace, oversize flue liners are to meet codes in
certain areas as it is recommended that one of the flowing procedures be followed.
A. A Chimney Connector can be installed from appliance flue exit through damper and
with air-tight face seal. (See option (A) Page 8).
B. A listed Direct Connect can be installed from appliance flue exit through damper into
the first section of flue liner with air-tight seal. (See option (B) Page 8).
C. A Positive Connect can be installed from appliance flue exit, continuing up through
entire chimney and exiting at top of the chimney. (See option (C) Page 8).

Page 8
OPTION (B)
REMOVE
DAMPER
OR WIRE IT
OPEN
AIRTIGHT
INSULATED
CLEAN-
BLOCK-OFF PLATE
OR DAMPER ADAPT-
ER
SEAL TRIM PANELS
WITH INSULATION
OR HIGH
TEMPERATURE
CAULK
STAINLESS
STEEL
CHIMNEY
CONNECT-
OR 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 inspection requirements in your area.
STARTER PIPE
SEAL TRIM PANELS AND UNDER
FRONT OF STOVE UNIT WITH
INSULATION OR HIGH
TEMPERATURE CAULK
OPTION (A)
REMOVE
DAMPER
OR WIRE
IT OPEN
AIRTIGHT INSU-
LATED CLEAN-
OUT
NOTE: New Buck Corporation grants no warranty,
implied or stated, for the installation or mainte-
nance of your appliance, and assumes no responsi-
bility of any consequential damage (s).
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 CONNECT-
OR OR FLEXIBLE
VENT. FOLLOW
THE LINER MANU-
FACTURE’S IN-
STRUCTIONS FOR
INSTALLATION
AND SUPPORT.
AIRTIGHT
INSULATED
CLEAN-OUT
REMOVE
DAMPER
OR WIRE
IT OPEN
INSTALL A NON-COMBUSTIBLE
COVER PLATE TO PREVENT
WATER FROM ENTERING THE
CHIMNEY