BuckMaster 51ZC User manual

MODEL 51ZC / MODEL 21ZC
ZERO CLEARANCE CABINET
FOR USE WITH FIREPLACE MODELS 51, T-51, 74, T-74 and 21
ONLY. MAY BE INSTALLED IN RESIDENTIALAND MOBILE
HOME.
Contact your insurance company for coverage and installation inspection.
WARNING
Do not attempt to build a fire in this product. It has been designed and safety tested for use
only with Models 51,T-51,74,T-74 manufactured by NEW BUCK CORPORATION.
Read and follow the installation and operating instructions for this model.
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 HAVE JURISDICTION ( SUCH AS MUNICIPAL
BUILDING DEPARTMENT, FIRE DEPARTMENT, FIRE PREVENTION BUREAU,
ect.) SHOULD BE CONSULTED BEFORE INSTALLATION TO DETERMINE THE
NEED TO OBTAIN A PERMIT. KEEP THESE INSTRUCTIONS FOR FUTURE USE.
TESTED AND LISTED BY: ITS/WARNOCK HERSEY, MIDDLETON, WI
MANUFACTURED BY NEW BUCK CORPORATION
200 ETHAN ALLEN DRIVE,
SPRUCE PINE, N.C. 28777 Revised January 2013
BUCK STOVE
www.buckstove.com

Page 1
TABLE OF CONTENTS
SECTION I: Residential Installation………………………………………………………..2
Chimney Location ………………………………………………………………………….4
Floor Protection.…………………………………………………………………………….6
Framing Construction Installation……………………………………………………….….7
Corner Location Framing…………………………………………………………………...10
SECTION II: Mobile Home Installation ………………………………………………….13
Framing Construction Installation ………………………………………………………...14
Alternate Floor Protector . ………………………………………………………………….17
Safety Precaution ..………………………………………………………………………….18
Preventive Maintenance….. …………………………………………………………………..19
Chimney Cleaning. …………………………………………………………………………19
Heater Removal from Cabinet……. ………………...……………………………………...20
Reinstalling Heater into Cabinet . …………………………………………………………..21
Cabinet Identification ..……………………………………………………………………..22
Warranty….………………………………………………………………………………… ..23

Page 2
RESIDENTIAL INSTALLATION
Listed NEW BUCK CORPORATION:
Model
51ZC Zero Clearance Cabinet Assembly For Use With Models 51, T-51, 74, and T-74 Only.
CAUTION: Read through all of these instructions carefully. Follow approved Chimney Manufac-
turer’s Installation exactly. Failure to install the Cabinet Fireplace, Stove and Chimney as described in
the instructions will void the manufacturer’s warranty and may have an effect on your Homeowner’s
Insurance. A major cause of chimney related fires is failure to maintain required clearances (air spaces)
to combustible materials. It is of the utmost importance that these parts be installed only in accordance
with these instructions.
“DO NOT USE CHEMICALS OR FLUIDS TO START THE FIRE.”
“DO NOT BURN GARBAGE OR FLAMMABLE FLUIDS.”
“DO NOT BUILD A FIRE DIRECTLY INSIDE THE ZC CABINET. IT IS DESIGNED
SOLELY FOR HOUSING THE MODELS 51, T-51, 74, T-74 STOVES.”
“WARNING -THIS FIREPLACE HAS NOT BEEN TESTED WITH AN UNVENTED
GAS LOG SET. TO REDUCE THE RISK OF FIRE OR INJURY, DO NOT INSTALL
AN UNVENTED GAS LOG SET INTO THIS FIREPLACE.”
CAUTION:
“Never use gasoline, gasoline - type lantern fuel , kerosene, charcoal lighter fluid, or similar
liquids to start or ‘freshen up’ a fire in this fireplace. Keep all such liquids well away from the
fireplace while it is in use,”
“Disposal of Ashes:
Ashes should be placed in a metal container with a tight-fitting lid. The closed container of
ashes should be placed on a noncombustible floor or on the ground, well away from all combus-
tible materials, pending final disposal. If the ashes are disposed of by burial in soil or otherwise
locally dispersed, they should be retained in the closed container until all cinders have thor-
oughly cooled.”
“Do Not Use Grate or Elevate Fire-Build Wood Fire Directly on Hearth in Stove.”
For operation and use of air, and damper controls, see stoves Owners Manual for use of air, and
damper control.
For operation and use of electrical assemblies, see stoves Owners Manual for use of electrical
assemblies
“USE SOLID WOOD FUEL ONLY.”.
The Zero-Clearance Cabinet and the Models 51, T-51, 74, and T-74 Installed (hereafter referred to as
the 51ZC) is designed for installation in a family dwelling, where minimum clearance is desired.
SECTION I

Page 3
INSTALLATION PRECAUTIONS
The following precautions are mandatory for a safe installation.
(A) Compliance with local building codes and regulations is mandatory.
(B) Be careful not to damage the unit in handling and unpacking component parts and accessories.
(C) Model 51zc Cabinet, use only 6"listed 2100º UL 103 HT TYPE Chimney with the 51zc
Cabinet (ONLY AFTER) one of the follwing new Buck Corparation Stoves 51, T-51, 74, T-74,
has been installed into the 51ZC Cabinet.
(D) The chimney must extend a minimum of three feet (3') above the highest point where it penetrates
the roof (three feet (3') above a flat roof or up to a 2 /12 pitch roof ), and the chimney must extend a
minimum of two feet (2') higher than any portion of the building within ten feet (10') of the chim-
ney. The minimum height is fourteen feet (14'). The maximum height is thirty feet (30'). A two-inch
(2") clearance must be maintained between the chimney and any combustible materials at all points.
(E) A rain cap must be used to terminate the chimney to prevent down-draft. Use the factory approved
rain cap which is approved for the type chimney being installed.
(F) “DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER
APPLIANCE.” DO NOT USE A FLUE INTENDED FOR A GAS APPLIANCE.”DO
NOT CONNECT TO ANY DISTRIBUTION DUCT OR SYSTEM.”

Page 4
SELECTING A CHIMNEY INSTALLATION AND LOCATION
There are two basic types of chimney installation possible with the 51ZC; straight up through a ceiling,
or a chase installation, either outside or inside. These are normally used as follows:
CHIMNEY CAP
CHIMNEY CAP
CHIMNEY CAP
STORM COLLAR
STORM COLLAR
STORM COLLAR
FLASHING
FLASHING
FLASHING
CHIMNEY PIPE
METAL FIRE STOP
METAL FIRE STOP
Z.C. CABINET
CHIMNEY PIPE
METAL FIRE STOP
Z.C. CABINET
ADJUSTABLE
CHIMNEY
ELBOWS
METAL FIRE STOP
Z.C. CABINET
CHIMNEY PIPE
FIGURE 1 THROUGH CEILING FIGURE 2 THROUGH CATHEDRAL
CEILING
FIGURE 3 OFFSET TO CLEAR OBSTRUCTION
CAUTION: Refer to chimney manufac-
turer’s instructions for assembly and disas-
sembly of chimney parts. Be sure to follow
chimney instructions for proper clearances to
combustibles and proper air spacing required.
WARNING: Only one pair of 15 degree
or 30 degree offsets can be used.

Page 5
B. Exterior Chase Installation: (See Figure 4). A chase is an enclosure built specifically to house a
chimney. The interior of a chase is open from Model 51ZC to the roof, eliminating the need to cut
through ceilings and the roof. Normally, a chase is built through the wall, and the Model 51ZC is located
in the bottom of the chase, with the front of the unit flush with the interior wall. Chases are commonly
veneered on the outside with brick, stone or wood to give the appearance of a conventional fireplace
flue. Occasionally, they are built inside and boxed in, similar to a stairwell. When making a chase instal-
lation, it is important to read the chimney manufacturer’s instructions prior to building, as there are spe-
cific requirements for bracing a free standing flue that must be planned for. There are also occasions
where offsets are used within a chase to accommodate unusual building designs, or to locate the Model
51ZC further into a room.
A. Straight up through ceiling (See Page 4 Figures 1 and 2). This is a simple installation normally used
when installing a Model 51ZC inside an existing room, and in some cases, in new construction.
Refer to (Page 4 Figure 3) if an offset to clear an obstruction is needed.
WARNING: Only one pair of 15 degree or 30 degree offsets can be used.
FIGURE 4 EXTERIOR WALL CHASE
Z.C. CABINET
CHIMNEY CAP
STORM COLLAR
FLASHING
CHIMNEY PIPE
OPTIONAL METAL FIRESTOP RADIATION
SHIELD
WALL BAND

Page 6
Floor Protection: or Hearth Protector
Floor protection must be 3/8” minimum thickness non-combustible material or equivalent.
How to use alternate materials and how to calculate equivalent thickness.
An easy means of determining if a proposed alternate floor protector meets requirements listed
in the appliance manual is to follow this procedure:
1. Convert specification to R-value:
R-value is given—no conversion is needed.
K– factor is given with a required thickness (T) in inches:
C-factor is given: R=1/C
2. Determine the R-value of the proposed alternate floor protector.
Use the formula in step (1) to convert values not expressed as “R”
For multiple layers, add R-values of each layer to determine the overall R-value.
3. If the overall R-value of the system is grater than the R-value of the specified floor
protector, the alternate is acceptable.
Example:
The specified floor protector should be 3/4” thick material with a K-factor of 0.84.
The proposed alternate is 4” brick with a C-factor of 1.25 over 1/8” mineral board with a
K-factor of 0.29.
Step (a): Use formula above to convert specification to R-value. R= 1/K x T = 1/0.84 x .75 =
0.893
Step (b): Calculate R of proposed system. 4” brick of C=1.25, therefore Rbrick = 1/C = 1/1.25
=0.80 1/8” mineral board of K = 0.29, therefore Rmin.bd. =1/029 x0.125 = 0.431
Step (c): Compare proposed system R of 1.231 to specified R of 0.893. Since proposed
system R is greater than required , the system is acceptable.
Definitions:
Thermal conductance = C = Btu = W
(hr)(ft²)(°F) (m²)(°K)
Thermal conductance = K = (Btu)(inch) = W = (Btu)
(hr)(ft²)(°f) (m)(°K) (hr)(tf)(°F)
Thermal conductance = R = (ft²)(hr)(°F) = (m²)(°K)
Btu W
Install in accordance with 24 CFR, Part 3280 (HUD).

Page 7
FRAMING CONSTRUCTION AND INSTALLATION
Except as noted, the 51ZC can be installed almost anywhere you desire. There are, however, a few clearance
and framing restrictions that must be followed. (See Page 10 Figure 9), and (Page 11 Figure10) to make sure
that these clearance restrictions are met. It is much wiser to place your Model 51ZC correctly at the start.
You must ensure that the floor is of adequate strength to accept the load of this unit. If inadequate, the floor
will require additional support, such as bracing. NOTE: A wooden base constructed of plywood or 2" x 4"
boards is required in order to get proper clearance above the extended hearth (millboard, rock stone, etc.).
Good planning is essential for a satisfactory installation, therefore, at this point you should have decided
where the 51ZC is to be located and the route the chimney will follow to the roof-straight up or chase. If
you cannot decide the best route, contact your Dealer for assistance with the planning.
26"
26"
26"
CORNER
LOCATION
ADJACENT ROOM OF
EXTERIOR CHASE
INTERIOR LOCATION
FIGURE 5
Above (Figure 5) are framing location examples with depth dimensions for some typical configurations.
These are finished measurements so install accordingly.

Page 8
The base for the Model 51ZC must be level with or slightly higher than the “finished” hearth height di-
mension (A) Figure 6.
Framing must be accomplished after the Model 51ZC is set in place. The chimney can be installed after
framing, but installation is considerably more difficult and in some cases, impossible. Therefore, it is
recommended that the chimney be installed prior to framing when a choice exists.
Figure 5 on the previous page shows framing location examples with depth dimensions for some typical
configurations. These are finished measurements so install accordingly.
NOTE: Before framing, combustible floor coverings (carpets, tiles, etc.) must be removed to outer
dimensions of the unit framing, including the 16" x 37 1/2" area for the hearth extension.
1-A. Safety shield for millboard hearth extension for
flat on the floor installation. Place (3") three inches
of safety shield under the ZC Cabinet. Place hearth
protector on top of safety shield.
FIGURE 7-A
FINISHED
HEARTH
WOODEN BASE
3" BACK FROM
FRONT OF UNIT 3" FORWARD FROM FRONT OF UNIT
ATTACH 6" X 37 1/2"
SAFETY SHIELD
USING SHEET
METAL SCREWS
CONTINUED FRAMING AND INSTALLATION
WARNING: Install the hearth pro-
tector only as specified. The hearth ex-
tension must be a minimum of 16" in
front of the stove door opening and
must be 37 1/2" wide minimum.
(See page 6)
NOTE: No floor protector is needed
directly under the Model 51ZC Cabinet,
only the hearth protector. (See page 6)
NOTE: “Safety Shield for
hearth extension must be
used on installation.”
FIGURE 6
WOODEN BASE
2 1/2"
16"
FINISHED WALL
FINISHED
HEARTH
FLOOR
LINE
DIMENSION
(A)
MANTEL or SUPPORTS
“A MINIMUM OF 30 1/2" FROM
TOP OF UNIT TO TRIM OF
MANTEL OR SUPPORTS”
30 1/2"MIN.

Page 9
1-B. Safety shields for brick or rock hearth: cut vertical
shield to fit installation height as needed. Use 26 GA.
Minimum metal being sure to cover any combustibles on
the base area.
ATTACH SAFETY SHIELD
USING SHEET METAL SCREWS
FIGURE 7-B
2. Set the Model 51ZC unit in place and attach the safety shield to the unit as shown in (Page 8
Figure 7-A) and Figure 7-B. You must use a non-combustible material or a UL listed floor
protector R-Value 0.6 .(See Page 6) A minimum of 16" in front of stove door opening and 37 1/2"
the width of the cabinet (See Figure 8)
3. Frame the ZC Cabinet using 2" x 4" studs or local building code framing. Some minor framing
restrictions are required: Mantel Height (See Page 8 Figure 6 )
(A) Adjacent side walls must be at least 16" from the outer edge of the Cabinet trim panel.
(B) The overall opening dimensions must be at least 37 1/2" wide and 34 3/4" high and 26"
in depth.
(C) 2"x 4" framing above the unit must be turned flat. This allows proper clearance from framing
(2" minimum). (See Page 5 Figure 4.)
CONTINUED FRAMING AND INSTALLATION
NOTE: For raised hearth, safety shield must be
under cabinet (See Page 8, Figure 7-A).
Also shield must cover any face of combustible
material supporting cabinet where hearth connects.
(See Figure 7-B)
RAISED HEARTH
FIGURE 8
EXTERIOR ROOF OR CHASE
CHIMNEY
STORM COLLAR
ROOF FLASHING
CHIMNEY PIPE
USE FIRE CODE SHEET ROCK
2" X 4" STUDDING
DOUBLE HEADER: A DOUBLE HEADER
MUST BE USED ON A LOAD BEARING
WALL. THIS MUST BE DONE 12"
ABOVE CABINET.
SINGLE HEADER: A SINGLE HEADER
MUST BE USED AS PAT OF FRONT
FRAMING. VERTICAL 2" X 4"‘s
MUST BE TURNED FLAT.
34 3/4"
37 1/2"
WARNING: Install the
hearth protector only as speci-
fied. The extension must extend
a minimum of 16" in front of the
stove door opening and must be
37 1/2" wide minimum.
Refer to (Page 6) for calculation
of R, and K values.

Page 10
CORNER LOCATION FRAMING
WARNING: Install the hearth protector only
as specified. The extension must extend a mini-
mum of 16" in front of the stove door opening
and must be 37 1/2" wide minimum. Refer to
(Page 6) for calculation of R, and K values.
NOTE: No floor protector is needed directly under the Model 51ZC Cabinet, only the hearth protector
is needed.
FIGURE 9
.
i
CHIMNEY CAP
STROM COLLAR
ROOF FLASHING
2" X 4" STUDDING
CHIMNEY PIPE
METAL FIRE STOP
USE FIRE CODE SHEET ROCK
2" X 4" STUDDING
A SINGLE HEADER MUST BE INSTALLED ABOVE CABI-
NET. VERTICAL 2" X 4"‘s MUST BE TURNED FLAT.
NOTE: FINISHED WALL MUST BE 2" IN FRONT OF FACE
OF ZC CABINET (WITHOUT HOOD TRIM ATTACHED).
NOTE: A DOUBLE HEADER MUST BE USED ON A LOAD
BEARING WALL.
34 3/4"
37 1/2"

Page 11
CONTINUED FRAMING AND INSTALLATION
Position Model 51ZC for installation as follows:
1. Thoroughly clean the area where the unit and hearth extension will be placed. Remove any carpet-
ing/padding from the area where the 51ZC will be installed.
2. Layout the location on the floor for the ZC cabinet .(See Page 7 Figure 5.)
3. Now place the Model 51ZC in desired location.
4. A sheet metal safety shield is placed 3" under the cabinet. It must extend out under the floor protec-
tor.
5. Now you are ready to install the chimney system for the 51ZC. If you are building an outside chase,
follow approved Chimney Manufacturer’s instructions. If you are penetrating a ceiling, install the
chimney as follows:
a. Drop a plumb line, locate, and mark the point on the ceiling directly over the center of the 51ZC
chimney adapter.
b. After locating the center of the hole, install the firestop spacer per chimney manufacturer’s
instructions.
6. Obtain the listed and approved chimney installation instructions and follow exactly.
a. Obtain the starter section of pipe and install on the 51ZC cabinet. It may be necessary to crimp
the inside of the starter pipe to ease installation into the 51ZC cabinet.
b. Obtain the two short sheet metal “ell” brackets and sheet metal screws provided with the 51ZC
and secure the starter section of pipe to the 51ZC cabinet.
Install pipe by pushing down over
the starter section of pipe on the
51ZC Cabinet.
WARNING: Do not pack
required air spaces on top of
cabinet or around pipe starter
section with insulation or other
materials.
Maintain a 2" minimum clearance.
Top Standoffs
CAUTION: Maintain a 1-1/2"
air space between the rear and side
of cabinet to combustible materials.
FIGURE 10
c. Continue adding lengths of chimney until you are ready to penetrate another ceiling or the roof.
d. Now, plumb bob the center of the ceiling or roof above the chimney and install another firestop
for another ceiling penetration or follow pipe manufacturer’s instructions for attic and roof
penetration.
e. Once the roof penetration is made, install the flashing.
f. Add applicable lengths of chimney, extending through the roof until the following conditions
are met:

Page 12
CONTINUED FRAMING AND INSTALLATION
1. Chimney height is at least 12' to 15' minimum.
2. The chimney must extend a minimum of 3' above the highest point where it penetrates the roof.
3. The chimney must extend a minimum of 2' higher than any portion of the building within 10'
of the chimney.
g. Install the chimney cap and storm collar.
7. The 51ZC cabinet is now ready for framing as follows:
a. Frame the 51ZC using 2" x 4" studs or local building code framing. Some minor framing restric-
tions are required.
1. Adjacent side walls must be at least 10" from the outer edge of the 51ZC trim panel.
2. The overall opening dimensions must be at least 37 1/2" wide and 34 3/4" high.
NOTE: Maintain 1 1/2" clearance at the side walls and rear of the cabinet and combustible material.
b. 2" x 4" framing above the unit must be turned flat. This allows proper clearance from framing
to chimney (2” minimum). (See Page 5Figure 4, and Page 10 Figure 9)
8. Next construct the hearth extension out of non-combustible inorganic building materials as follows:
a. The hearth extension must extend 16" from the stove door opening.
b. The hearth extension width must be at least 37 1/2".
c. The hearth extension must be made of brick 2” thick, or a listed “Hearth Extension” or “Floor
Protector” with R- value of: R=0.6 , or a hearth extension made of non-combustible inorganic
material with a K * factor of K=2.5 BTU ( (HR)(ft2)(F/in.) (See Page 6)
9. The next step is the electrical installation. NOTE: An electrician must wire the 51ZC into the home
wiring system using No. 15 AWG (with ground wiring) as minimum or in accordance with local wir
ing codes.
CAUTION: Stove is plugged into cabinet receptacle.
a. Remove brass trim.
b. Remove top panel and right side panel.
c. Now an electrician must do the wiring.
10. Finish the wall around the 51ZC using brick, rock, sheetrock, paneling, or any type of finishing ma-
terial.
CAUTION: Do not block any openings designed into the unit.
11. Install a mantel above the unit if desired. NOTE that a combustible mantel must be positioned at
least 30 1/2" above the top of the stove.
TOP FRONT TRIM PANEL BRASS TRIM
RIGHT SIDE TRIM PANEL
BLACK
WHITE
GROUND
REAR COVER PLATE
RECEPTACLE BOX
HEATER POWER CORD
FIGURE 11

Page 13
SECTION II
MOBILE HOME INSTALLATIONS
Listed NEW BUCK CORPORATION:
Model
51ZC Zero Clearance Cabinet Assembly For Use With Models 51,T51,74, and 74 Only.
CAUTION: Read through all of these instructions carefully. Follow approved Chimney Manufac-
turer’s Installation exactly. Failure to install the Cabinet Fireplace, Stove and Chimney as described in
the instructions will void the manufacturer’s warranty and may have an effect on your Homeowner’s
Insurance. A major cause of chimney related fires is failure to maintain required clearances (air spaces)
to combustible materials. It is of the utmost importance that these parts be installed only in accordance
with these instructions.
“DO NOT USE CHEMICALS OR FLUIDS TO START THE FIRE.”
“DO NOT BURN GARBAGE OR FLAMMABLE FLUIDS.”
The Zero-Clearance Cabinet and the with either Models 51, T-51, 74 models, and T-74 (here after re-
ferred to as the 51ZC) is designed for installation in a family dwelling, where minimum clearance is
desired.
INSTALLATION PRECAUTIONS
The following precautions are mandatory for a safe installation.
(A) Compliance with local building codes and regulations is mandatory.
(B) Be careful not to damage the unit in handling and unpacking component parts and accessories.
(C) Any 6" chimney systems that bear the UL 103 HT Label are approved for use the model ZC51.
(D) The chimney must extend a minimum of three feet (3') above the highest point where it penetrates
the roof (three feet (3') above a flat roof or up to a 2 /12 pitch roof ), and the chimney must extend a
minimum of two feet (2') higher than any portion of the building within ten feet (10’) of the chim-
ney. The minimum height is fourteen feet (14'). The maximum height is thirty feet (30'). A two-inch
(2") clearance must be maintained between the chimney and any combustible materials at all points.
(E) A rain cap must be used to terminate the chimney to prevent down-draft. Use the factory approved
rain cap which is approved for the type chimney being installed.
(F) “DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER
APPLIANCE.” DO NOT USE A FLUE INTENDED FOR A GAS APPLIANCE.”DO
NOT CONNECT TO ANY DISTRIBUTION DUCT OR SYSTEM.”
(G) Do not build a fire directly inside the ZC Cabinet. It is designed solely for housing the Models 51,
T-51, 74, and T-74 stoves.
(H) “WARNING” Do not install in a sleeping room.
(I) The structural integrity of the mobile home floor, wall, and ceiling/roof must be maintained.

Page 14
FRAMING CONSTRUCTIONAND INSTALLATION
FRAMING CONSTRUCTION AND INSTALLATION
Except as noted, the 51ZC can be installed almost anywhere you desire. There are, however, a few clearance and
framing restrictions that must be followed. (See Page 6, Figure 5, and Page 7, Figure 6, also Figure 12) to make
sure that these clearance restrictions are met. It is much wiser to place your 51ZC correctly at the start of the
installation than to be forced to relocate it after much of the work is done.
You must ensure that the floor is of adequate strength to accept the load of this unit. If inadequate, the floor will
require additional support, such as bracing. NOTE: A wooden base constructed of plywood or 2" x 4" boards is
required in order to get proper clearance above the extended hearth (millboard, rock, stone, etc.). (See Page 16.)
1. Thoroughly clean the area where the unit will be placed. Remove any carpeting/padding from the area where
the 51ZC will be installed.
2. Layout the location on the floor for ZC cabinet.
NOTE: Maintain 1 1/2" clearance between the rear of the cabinet and combustible material.
CAUTION
THE STRUCTURAL INTEGRITY OF THE MOBILE HOME FLOOR, WALL,
AND CEILING/ROOF MUST BE MAINTAINED.
(MOVE OPENING AND/OR REPOSITION HEATER LOCATION IF NECESSARY).
3. Layout for hearth extension preparation and removal of carpet and padding .
The hole for the out side air kit may be located anywhere under the 51ZC Cabinet. A 4 1/4" diameter hole
with a 2 1/8” radius from center line must be cut through floor. 4" Outside air duct kit # PP70075-01 is to be
installed. 4" flex or solid pipe and outside air pipe termination cap ( not provided). Slide the outside air duct
down through the hole in the floor, and secure out side air duct with 4 screws (not provided).
(See Page 15, Figure 13.)
NOTE: The maximum length of the out side air pipe is determined by having to reach the same atmospheric
pressure with the out side air inlet as the exhaust.
NOTE: “Combustion air inlet ducts shall not terminate in attic spaces
4. Place the sheet safety shield provided with unit 1 1/2" under the front of the cabinet. It must extend out under
the floor protector. Drop a plumb line, locate and mark point on ceiling directly over center of 51ZC chimney
adapter. After locating the center of hole, install firestop spacer per chimney manufacturer’s instructions.
26"
INTERIOR LOCATION
CORNER
LOCATION
26"
FIGURE 12

Page 15
5. Obtain the Listed and Approved Chimney Installation instructions and follow exactly.
a) Obtain the starter section of pipe and install on the 51ZC cabinet. It may be necessary to crimp the inside
of the starter pipe to ease installation into the 51ZC cabinet.
b) Obtain the two short sheet metal “ell” brackets and sheet metal screws provided with the 51ZC and secure
the starter section of pipe to the 51ZC cabinet.
c) Add applicable lengths of chimney extending through the roof until the following conditions are met:
1. The chimney must extend a minimum of 3' above the highest point where it penetrates the roof.
2. The chimney must extend a minimum of 2' higher than any portion of the building within 10' of the
chimney but not to exceed 15' above the hearth.
d) Install the flashing, storm collar, and chimney cap as indicated in the manufacturer’s installation
instructions.
6. The 51ZC Cabinet is now ready for framing as follows:
a) Frame the 51ZC using 2"x 4" studs or local building code framing. Some minor framing restrictions are
required:
1. Adjacent side walls must be at least 10" from the outer edge of the 51ZC trim panel.
2. The overall opening dimensions must be at least 37 1/2" wide and 34 3/4" high.
3. Clearances from mantel, and trim to the top of stove must be a minimum 30.5"
(See Page 16, Figure 14).
b) 2" x4" framing above the unit must be turned flat. This allows proper clearance from framing to chimney
(2" minimum). (See Page 16, Figure 14).
FIGURE 13
2 ft.
RAIN CAP
STORM
COLLAR
FLASHING
NEW BUCK
FIRE STOP
RADIATION
SHIELD
OUTSIDE AIR
DUCT THROUGH
FLOOR
2 ft.
RAIN CAP
STORM COLLAR
FLASHING
NEW BUCK
FIRE STOP
RADIATION
SHIELD
3 ft. Typical
20 ft. Max.
(Typical)
OUTSIDE AIR DUCT
THROUGH FLOOR
WHEN MOBILE
HOME IS NOT UN-
DERPINNED
OUTSIDE AIR DUCT
THROUGH UNDERPINNING
4" FLEX OR SOLID PIPE
4 " OUTSIDE AIR DUCT MAY
BE LOCATED ANY WHERE
UNDER 51ZC CABINET
4 " OUTSIDE AIR DUCT MAY
BE LOCATED ANY WHERE
UNDER 51ZC CABINET
OUTSIDE AIR PIPE
TERMINATION CAP
( NOT PROVIDED )

Page 16
7. Next construct the hearth extension out of non-combustible inorganic building materials as follows:
a) The hearth extension must extend 16" from stove door opening .
b) The hearth extension width must be at least 37 1/2".
c) The hearth extension must be made of brick 2" thick, a listed “Hearth Extension” or “Floor Protector”, or
a hearth extension made of non-combustible inorganic material with a K* factor of:
K = 2.5 BTU ((HR) (ft2) (oF/in.)) or R-Value R=0.6 See Page 6 for formula.
ALTERNATE FLOOR PROTECTORS MATERIALS
With the floor protector or hearth extension material specified as one layer of 2" thick brick with a K* factor of
5.0, you may use alternate materials as long as the K* factor (s) is calculated as follows:
Formula: Required thickness = (K of alternate material/K of millboard) X (thickness of millboard)
Example: An alternate inorganic non-combustible millboard with a K of .9375 would require a thickness
as follows:
Required thickness = .9375.0ox 2 inch
=3/8inch
FIGURE 14 CHASE ENCLOSURE AND CORNER LOCATION FRAMING
Optional
Fire Code Sheet Rock
And Metal Fire Stop
Ceiling
RADIATION
SHIELD
15FT.
MAX.
2 In.
Min.
Chase
Enclosure
TOPPER
STORM COLLAR
ROOF FLASHING
TRIPLE WALL PIPE
2 " X 4" STUDDING
USE FIRE CODE SHEET ROCK
OPTIONAL METAL FIRE STOP
RADIATION SHIELD
2" X 4" STUDDING
A SINGLE HEADER MUST BE
INSTALLED ABOVE CABINET
34 3/4"
THESE MEASUREMENTS
ARE CRITICAL
WARNING: Install the hearth protec-
tor only as specified. The hearth exten-
sion must extend a minimum of 16" in
front of stove door opening and must be
37 1/2" wide minimum. (See Page 5)
CAUTION: Refer to chim-
ney manufacturer’s instruc-
tions for assembly and disas-
sembly of chimney parts. Be
sure to follow chimney
instructions for proper clear-
ances to combustibles and
proper air spacing required.
NOTE: Follow building and fire codes
for each individual state.
“A MINIMUM OF 30.5"
FROM TOP OF STOVE
TO TRIM OF
MANTEL or SUPPORTS”
30.5"
37 1/2"

Page 17
K Factors of Alternate Materials:
Material K RequiredThickness
Ceroform126 .21 1/8"
Limestone 8.0 3.2"
Concrete 8.0 3.2"
Sandstone 13.0 5.2"
Marble 18.0 7.2"
Hearth extension or floor protector thickness above four (4) inches is generally not acceptable due to cost, floor
load capacity, and look. The alternate we recommend is using Ceroform No. 126 millboard 1/8" thick minimum
and putting any type decorative brick or stone (any thickness) on top of it.
*The K* factor represents the thermal conductivity of a material and is the time rate of heat flow through a
homogeneous material under steady-state conditions, through unit area, per unit temperature gradient in the
direction perpendicular to a surface.
9. The next step is the electrical installation. NOTE: An electrician must wire the 51ZC into the home wiring
system using No. 15 AWG (with ground wiring) as minimum in accordance with local wiring codes.
CAUTION: Stove is plugged into cabinet receptacle.
A. Remove brass trim.
B. Remove top panel and right side panel.
C. Now an electrician must do the wiring.
9. Finish the wall around the 51ZC using brick, rock, sheetrock, paneling, or any type finishing material.
CAUTION: Do not block any openings designed into the unit.
10. Install a mantel above the unit if desired. Note that a combustible mantel must be positioned at least 30 1/2"
above the top of the stove.
11. The 51ZC and Model 51,T51,74 or T-74 fireplace are now ready for use. Refer to the stove owners manual for
operation, safety, and chimney maintenance. Refer to the back of this manual for 51ZC warranty registration
information.
FIGURE 15 POWER HOOK-UP
TOP FRONT TRIM PANEL
BRASS TRIM
RIGHT
SIDE TRIM
PANEL
BLACK
WHITE
GROUND
REAR COVER PLATE
RECEPTACLE BOX
HEATER POWER CORD

Page 18
CLEANING THE UNIT
A. The unit should be lightly sanded with fine sandpaper or steel wool, then repainted or touched up with high
temperature black paint.
B. If the unit is located in a moist or damp location, check thoroughly for signs of condensation during times
when the unit is not in use.
C. When the heating season is over, the unit can be cleaned out completely with a wire brush or cloth to help
eliminate ash and burned wood smell.
SAFETY PRECAUTIONS
1. Use smoke detectors around the stove as well as in sleeping areas.
2. Keep a fire extinguisher rated for Class “A” fires near the stove.
3. Check with your insurance company to be sure your policy covers the installation and use of a wood burning
appliance.
4. Creosote-Formation and Need for Removal: When wood is burned slowly, it produces tar and other organic
vapors, which combine with expelled moisture to form creosote. The creosote vapors condense in the
relatively cool chimney flue of a slow-burning fire. As a result, creosote residue accumulates on the flue
lining. When ignited this creosote makes an extremely hot fire.
The connector and/or chimney should be inspected at least once every two months during the heating season
to determine if a creosote buildup has occurred.
If creosote has accumulated, it should be removed to reduce the risk of a chimney fire.
5. Locate furniture and any other combustibles away from the stove.
6. Store firewood at a safe distance from the stove.
7. Disposal of Ashes: Ashes should be placed in a metal container with a tight fitting lid. The closed container of
ashes should be placed on a non-combustible floor or on the ground well away from all combustible materials,
pending final disposal. If the ashes are disposed of by burial in soil or otherwise locally dispersed, they should
be retained in the closed container until all cinders have thoroughly cooled.
8. Always exercise caution when using your fireplace. Be particularly careful when there are children around an
operating fireplace.
CAUTION: NEVER use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter fluid or similar
liquids to start or “freshen-up” a fire in the fireplace. Keep all such liquids well away from the stove
when it is in use. All fluids of this type give off highly volatile fumes and can and WILL EXPLODE!
Don’t take a chance with the safety of your home and family.