New Buck Corporation 20 Room Heater User manual

“MEETS PHASE II EPA STANDARDS”
MODEL 20 Room Heater
FEATURES
PREPARATION INSTALLATION
OPERATION MAINTENANCE SAFETY
Contact your insurance company for coverage and installation inspection
SAFETY NOTICE
If this heater 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.
This product is listed by Warnock-Hersey International, Inc. to the UL Standard No. 1482 and 127.
Manufactured by New Buck Corporation, Spruce Pine, NC 28777
Revised May/2001
PN-PI-200660
Tested by ITS

TABLE OF CONTENTS
SECTION 1:
Room Heater Features ............................................................................................................................. 3
Important Statements ............................................................................................................................... 4
SECTION II:
Masonry Insert Installation ...................................................................................................................... 6
Minimum Clearances............................................................................................................................... 7
Required Fireplace Dimensions............................................................................................................... 8
Tools for Installation................................................................................................................................ 8
Installation Preparation: Fireplace .......................................................................................................... 8
Installation Preparation: Heater .............................................................................................................. 8
Installation Procedure—Direct Connect .................................................................................................. 9
Positioning the Heater.............................................................................................................................. 9
Mounting the Trim Panels ..................................................................................................................9-10
Final Check............................................................................................................................................ 11
SECTION III:
Freestanding Installation........................................................................................................................ 12
Minimum Clearances............................................................................................................................. 13
Tools for Installation.............................................................................................................................. 14
Installation Preparation .......................................................................................................................... 14
Determining the Chimney Location....................................................................................................... 15
Final Check............................................................................................................................................ 18
SECTION IV:
Mobile Home Installation ...................................................................................................................... 19
Parts Requirements ................................................................................................................................ 19
Minimum Clearances............................................................................................................................. 20
Tools for Installation.............................................................................................................................. 20
Installation Preparation .......................................................................................................................... 21
Determining the Chimney Location....................................................................................................... 22
Final Check............................................................................................................................................ 23
SECTION V:
Zero-Clearance Installation.................................................................................................................... 24
Minimum Clearances............................................................................................................................. 26
SECTION VI:
Safety ..................................................................................................................................................... 28
SECTION VII:
Operation ............................................................................................................................................... 29
Building a Fire ....................................................................................................................................... 29
Operating and Safety Hints.................................................................................................................... 31
Guide to Burning Qualities of Wood ..................................................................................................... 31
Helpful Hints ......................................................................................................................................... 31
SECTION VIII:
Manufacturer’s Suggested Preventive Maintenance .............................................................................. 32
Catalytic Inspection ............................................................................................................................... 32
Catalyst Replacement ............................................................................................................................ 33
Door Gasket Replacement ..................................................................................................................... 34
Electrical Operation ............................................................................................................................... 35
SECTION IX:
Troubleshooting Guide .......................................................................................................................... 36
ZERO-CLEARANCE CABINET MODEL ZC20 ............................................................................ 46
SECTION I:
Residential Installations......................................................................................................................... 47
SECTION II:
Mobile Home Installations..................................................................................................................... 54
WARRANTY—Heater............................................................................................................Rear Cover

SECTION I
The New Buck Corporation room heater Model 20 is one of the safest and most efficient heating systems
available when installed and operated as specified in these instructions and as stipulated on the operation and
installation labels affixed to the unit. The unit is designed to burn wood fuel only.
Please read this entire manual before you install and use your new room heater. Failure to follow instructions may
result in property damage, bodily injury, or even death.
Throughout the manual, you will see this symbol . This indicates areas of importance regarding safety.
Please make a special note of these areas.
Install and use only in accordance with the manufacturer’s installation and operating instructions. Do not connect
this unit to a chimney flue serving another appliance.
ROOM HEATER FEATURES
Before attempting to install or operate your heater, it is a good idea to familiarize yourself with the features and
operating controls of the unit.
OPERATING CONTROLS
WARNING: Model 20 heater was not designed for fire grates.
1. Bypass Damper: The bypass damper control is located in the top center of the heater front just under the top.
It is operated by pushing or pulling the rod. The damper is fully open when the handle is pulled out and fully
closed when it is pushed in. The damper must be open before the door is opened.
2. Blower Control: The blower control switch is located behind the access door at the lower left hand side of
the front of the unit. The unit has a Auto-Off-Manual manual switch. Set the switch to the Manual position and
the blower well start at any temperature, set the switch to the Off position and the blower well not run at any
temperature. Set the switch to the Auto position and when the stove temperature reaches 110oblower will
automatically come on.
3. Primary Air Control: The primary air intake draft control is located on the upper portion of the unit next to
the top extension. It is operated by moving up and down to control the amount of primary air entering the
firebox.
4. Warm Air Outlets: Provides heat extraction from the top of the firebox.
5. Baffles: Directs air flow around the unit for maximum heat transfer.
6. Air Inlet: Allows cool air near the floor to be circulated through the blower and back into the warm air
chamber of the heater.
7. Stand: Elevates heater above the floor for safety and a neat appearance.
8. Door: Provides an “airtight” feature. The door allows a much higher burning efficiency than can be obtained
with an open firebox.
9. Hearth Extension: Offers protection from spilled ashes and cinders.
10. Power Cord: Provides electrical power to operate the blower.
11. Chimney Connector: Used to connect unit to chimney or direct connect kit.
12. Catalysts: Enables the unit to burn cleanly and efficiently.
13. Temperature Monitor: The location can be used for either a fireplace insert or freestanding installation.
Monitor hole is located to the right of the damper rod on the front. Remove plug and insert probe provided by
manufacturer.
14. Cover Door: Conceals blower, blower controls and ash pan.
15. Air Wash: Primary air is directed in such a way as to provide a “sweeping” airwash over the glass to assist in
keeping it clean.
16. Ash Pan: Provides for easy ash removal
17. Outside Air Control: Allows for adjustment of the amount of outside air entering the unit (installations using
outside air kit #P21B). Required in Mobile Home Installation.

EPA COMPLIANCE STATUS
This manual describes the installation and operation of the New Buck Corporation, Model 20 wood heater.
This heater meets the U.S. Environmental Protection Agency’s Emission limits for wood heaters sold after July
1, 1992. Under specific test conditions this heater has been shown to deliver heat at rates ranging from
approximately 10,000 to 39,000 BTU/hr.
CATALYST EQUIPPED
This wood heater contains a catalytic combustor, which needs periodic inspection and replacement for proper
operation. It is against the law to operate this wood heater in a manner inconsistent with operating instructions
in this manual, or if the catalytic element is deactivated or removed.
CATALYST WARRANTY
The combustor supplied with this heater is a set of (2) (2x3-5/16x7x25 cells). Consult the catalytic combustor
warranty also supplied with this heater. All warranty claims should be addressed to:
Applied Ceramics
Customer Service Department
P.O. Box 29664
Atlanta, GA 30359
770-448-6888
See enclosed catalyst warranty for instructions. New Buck Corporation does not handle catalyst replacements.
Customer can order direct from Applied Ceramics.
PROPER FUEL SELECTION
This heater is designed to burn natural wood only. Higher efficiencies and lower emissions generally result
when burning air dried seasoned hardwoods, as compared to softwoods or to green or freshly cut hardwoods.
DO NOT BURN:
1) Treated Wood 3) Garbage 5) Solvents 7) Trash
2) Coal 4) Cardboard 6) Colored Paper
Burning treated wood, garbage, solvents, colored paper or trash may result in release of toxic fumes and may
poison or render the catalytic combustor ineffective.
Burning coal, cardboard, or loose paper can produce soot, or large flakes of char or fly ash that can coat the
combustor, causing smoke spillage into the room and rendering the combustor ineffective.
ACHIEVING CATALYTIC LIGHT-OFF
The temperature in the stove and the gases entering the combustor must be raised to between 500o F to 700oF
for catalytic activity to be initiated. This can be determined with the use of a temperature monitor (TM-20).
During the start up of a cold stove a medium to high firing rate must be maintained for about 20 minutes. This
ensures that the stove, catalyst, and fuel are all stabilized at proper operating temperatures. Even though it is
possible to have gas temperatures reach 600o F within two to three minutes after a fire is started, if the fire is
allowed to die down immediately it may go out or the combustor may stop working. If this happens open the
damper to raise the temperature to activate the catalyst. Once the combustor starts working, heat generated in
it by burning the smoke will keep it working.
ACHIEVING CATALYTIC LIGHT-OFF WHEN REFUELING
During the refueling and rekindling of a cool fire, or a fire that has burned down to the charcoal phase, operate
the stove at a medium to high firing rate for about 10 minutes to ensure that the catalyst reaches approximately
600o F.

CATALYST MONITORING
It is important to periodically monitor the operation of the catalytic combustor to ensure that it is functioning
properly and to determine when it needs to be replaced. A non-functioning combustor will result in a loss of
heating efficiency, and an increase in creosote and emissions. Following is a list of items that should be
checked on a periodic basis.
Combustors should be visually inspected at least three times during the heating season to determine if physical
degradation has occurred. Actual removal of the combustor is not recommended unless more detailed
inspection is warranted because of decrease in performance. If any of these conditions exist, refer to Catalyst
Troubleshooting Section of the owner’s manual.
This catalytic heater is equipped with the means to install a temperature probe to monitor catalyst operation.
Properly functioning combustors typically maintain temperatures in excess of 1000oF. If catalyst
temperatures are not in excess of 500o F refer to Catalyst Troubleshooting section of this owner’s manual. You
can get an indication of whether the catalyst is working by comparing the amount of smoke leaving the
chimney when the smoke is going through the combustor and catalyst light-off has been achieved to the
amount of smoke leaving the chimney when the smoke is not routed through the combustor (bypass mode).
Step 1—Light stove in accordance with instructions.
Step 2—With smoke routed through the catalyst, go outside and observe the emissions leaving the
chimney.
Step 3—Engage the bypass mechanism and again observe the emissions leaving the chimney.
Significantly more smoke should be seen when the exhaust is not routed through the combustor (bypass
mode). Be careful not to confuse smoke with steam from wet wood.
CAUTION AGAINST OVER-FIRING
Do Not Over-fire This Heater.
Attempts to achieve heat output rates that exceed heater design specifications can result in permanent damage
to the heater and to the catalytic combustor.
MAINTAIN PROPER DRAFT
Draft is the force which moves air from the appliance up through the chimney. The amount of draft in your
chimney depends on the length of the chimney, local geography, nearby obstructions, and other factors. Too
much draft may cause excessive temperatures in the appliance and may damage the catalytic combustor.
Inadequate draft may cause backpuffing into the room and “plugging” of the chimney or the catalyst.
Inadequate draft will cause the appliance to leak smoke into the room through appliance and chimney
connector joints.
An uncontrollable burn or a glowing red stove part or chimney connector indicates excessive draft.
ASH REMOVAL
Whenever ashes build up in the firebox and when the fire has burned down and cooled, remove excess ashes.
Leave an ash bed approximately 1 inch deep on the firebox bottom to help maintain a hot charcoal bed.
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, away from all combustible materials, pending final
disposal. The ashes should be retained in the closed container until all cinders have thoroughly cooled.

SECTION II
MASONRY INSERT INSTALLATION
INSTALLATION PRECAUTIONS
Extensive field and laboratory testing has shown that catalytic stoves perform best as fireplace inserts when:
1. A direct connect kit is used to connect the stove exhaust outlet directly to the masonry flue of the fireplace
when flue liner size is approximately the same size as the heater flue gas exit. A rain cap is also recommended
to keep flue dry thus allowing a hotter draft.
NFPA 211 CODE: The National Fire Protection Association code requires all fireplace insert heaters to be
positively connected from the heater to the flue liner (subject to State and Local codes in your area).
2. An equivalent sized flue liner is installed when the flue liner size is larger than the heater flue gas exit.
Connection must be from stove exhaust outlet extending the full height of the chimney and must include a rain
cap.
3. Location of chimney is interior (not on an outside wall).
Satisfactory results have been reported with installations other than as listed above. However, as all chimneys draw
differently, problems with performance may be encountered if steps are not taken to keep the chimney hot. A draft
between .03 and .06 inches of water is recommended for proper catalytic operation.
Use the following to complete the installation of the unit as an insert:
Kit #FP20
INSTALLATION (Fireplace Insert)
FIGURE 1 FIREPLACE INSERT

MINIMUM CLEARANCES:
The Model 20 Fireplace Insert is intended for installation in accordance with the standard for chimneys, fireplaces,
vents, and solid-fuel burning appliances, NFPA-211 Code. This model is not intended for installation into factory-
built metal fireplaces or for use with a metal chimney (except as listed in Section V of this manual).
1. The hearth must be of masonry construction and must extend a minimum of 16” in front of the firebox
opening and a minimum of 8” to either side of the firebox opening.
2. If there is not 16” from the front of the firebox opening and the front of the masonry hearth, a floor
protector must be used in front of the hearth to protect combustible materials. 2” of brick, a listed “floor
protector” or a floor protector made of non-combustible, inorganic material with a K* factor may be used
as follows:
K = 2.5 BTU/((HR) (Ft2) (oF/IN))
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 = (.9375/5.0) x 2 in.
= 3/8 inch
K Factors of Alternate Materials
Material K Required Thickness
Ceroform 126 .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.
3. If your fireplace has wood trim above it, the wood trim must be at least 8” above the top of the unit and
may be a maximum of 1/2” thick.
4. If your fireplace has a wood mantel, the mantel or mantel supports must be located at a height greater
than 12” above the top of the unit.

REQUIRED FIREPLACE DIMENSIONS
Minimum and/or maximum fireplace dimensions:
Height Width Depth
Min. Max. Min. Max. Min.
Model 20 22” 31” 26” 41” 16”
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 450oF- 600o F
7/32” drill bit and drill
Socket/Rachet Set
INSTALLATION PREPARATION
Fireplace:
1. Locate furniture and other materials away from the front of the fireplace to allow free access to the fireplace.
2. Cover the hearth and adjacent floor areas with the drop cloths to protect from soiling or marring the surface.
3. Remove the existing fireplace damper plate.
4. Thoroughly clean the fireplace of ashes and soot.
5. Check the chimney and smoke chamber for excessive buildup of creosote or soot. Also, check for
obstructions, such as bird’s nests. If the chimney is excessively dirty, clean it, or have someone clean it
professionally BEFORE installing or using the room heater.
6. If the 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 the fireplace chamber.
Heater:
1. Inspect the unit for any obvious physical damage.
2. Plug the power cord into a 115V AC outlet. Set switch to “Manual” and rheostat to “High” position to ensure
motor operates properly.
3. Check the primary air draft control to ensure that it operates freely.
4. Check the operations of the damper control to ensure it will open and close properly.
5. If unit is a fireplace insert remove rear side panels and place screws back in the holes before setting the unit in
the fireplace opening.

NOTE: Due to the redesign for the 2002 series of the Model 20/ZC20, starting
with serial number 003908 . The following steps must be followed for proper in-
stallation and operating.
INSTALLATION
MOUNTING TRIM PANELS FOR MASONRY INSTALLATION
(Changes refer to pages 9 and 10 in your owners manual)
POSITIONING THE HEATER
When positioning the heater, the following conditions
MUST be met! (See Figure 2)
1. The front of the damper opening must be positioned
BEHIND the rear edge of the lintel to ensure proper
draft. (See Figure 2)
2. The vertical plane of the fireplace front must fall
BEHIND the side cold air vent on top of the unit. (In
other words, it is possible to have the heater too far in
as well as not far enough.)
3. Center the heater in the fireplace opening.
MOUNTING THE TRIM PANELS
After the unit is positioned, as shown in Figure 2, mark the
mounting position of the trim panels as follows:
1. Set the top (long) trim panel in place on top of the unit.
The panel should be flat against the outside face of the
fireplace, and standing vertically. Mark along the
lower edge of the trim panel with a pencil to make a
reference line for mounting.
2. Set the side trim panels in place behind and against the
intake covers, again, flat against the face of the
fireplace. Mark down the edge of the trim panel to
make a vertical reference line.
FIGURE 2 POSITIONING

3. Slide the unit out of the fireplace far enough to
work behind the trim panel reference lines.
4. Mount the side trim panels. (See Figure 3)
a. Position the trim panel on the reference line.
b. Drill mounting holes in center of trim panels
mounting brackets to allow for adjustment
in and out if necessary.
c. Mount the trim panel using the self-tapping
screws provided.
5. Place top panel back on reference mark. Take
top trim panel mounting bracket supplied with
unit. Position bracket so it overlaps rear lip of
top trim panel. Drill mounting holes in top of
stove using holes in bracket as guide. Tighten
down screws. NOTE: The mounting Bracket is
only necessary with direct connect installation.
6. Now, follow the installation procedures in the
listed direct connect or positive connect kit you
are using and install the heater and connect kit in
the fireplace.
7. Slide the unit back into the fireplace. Check to be
sure that the trim panels are properly positioned
and lie flat against the front of the fireplace. If
one or more of the panels is out of position, slide
the unit out and reset by loosening the mounting
screws and repositioning in the slot.
FIGURE 3 MOUNTING TRIM PANELS
8. Reinstall the top trim panel by sliding the rear lip of the top trim panel underneath the front lip of the mounting
bracket already secured to top of unit.
NOTE: Mount the top trim panel so that it sits in front of the top of the side trim panels.
9. Obtain the brass trim kit provided with unit and slip over the top and sides of trim panels. (Top ends of brass
may need to be trimmed to fit.)
10. If direct connect or positive connect kit is not used, follow instructions in steps 1-4c on previous page.
11. Mount top trim panel by drilling mounting holes in center of trim panel mounting brackets, with top end side
of top panel overlapping side panel.
12. Using insulation provided, peel and stick to back of panels overlapping fireplace dimensions by 1” on each
side and top. (See Figure 3.)
13. Next using high heat silicone or furnace cement run heavy bead of caulking around where panels meet the
stove. (See Figure 3.)
14. Slide the unit back into the fireplace. Check to be sure that the trim panels (and brass) are properly positioned
and lie flat against the front of the fireplace. If panels are out of position, slide the unit out and reset by
loosening the mounting screws and repositioning in the slot. With bar, lift stove in front. Place insulation
across front and the surface of hearth or bottom of fireplace, to make complete seal.
15. To check seal of panels, use candle flame and go around the 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 the specified clearances.
2. Remove all foreign material from the firebox area.
3. Open the primary air draft and damper bypass.
4. Plug the power cord into a 115V AC outlet. Set switch to “Manual” position to ensure motor operates
properly.
5. Place crumpled pieces of newspaper in the stove. Light it and close the door. Ensure that the stove draws
properly through the primary drafts.
6. Check for smoke leaks around the door.
7. Open the door and check for smoke escaping from the front of the stove. Smoking usually indicates a
defective or poorly positioned chimney. Some chimneys with a marginal draft can be preheated by lighting
newspaper and holding it near the open damper with a poker or fire tong. Once the chimney heats up, a proper
draft can usually be obtained.
If a thorough review of the Troubleshooting Guide in the rear of the manual does not reveal the problem, contact
your dealer for assistance.
NOTE: 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 the heater finish may be damaged.

SECTION III
RESIDENTIAL FREESTANDING ROOM HEATER
INSTALLATION
INSTALLATION PRECAUTION
Extensive field and laboratory testing has shown that catalytic stoves perform best as freestanding stoves when
vented into a masonry chimney if:
1. A rain cap is installed on the chimney.
2. Height of chimney is at least 15 feet high.
3. Location of chimney is interior (not on an outside wall).
NOTE: Certain types of double wall pipe (close clearance) also cause a substantial drop in flue gas temperature. If
a double wall pipe connector is being contemplated, check with the pipe manufacturer to ascertain that the use of
their product will not affect the flue gas temperature. Do not use double wall pipes which reduce flue gas
temperatures.
Satisfactory results have been reported with installations other than listed above. However, draft problems are
possible if a hot chimney is not maintained.
Use pedestal kits as follow:
Model 20 Kit #P8 or #P21B
CAUTION: Do not connect this unit to a chimney flue serving another appliance.

MINIMUM CLEARANCES
The New Buck Corporation Model 20 must be installed in compliance with the instructions contained in this
manual.
CLEARANCE FROM COMBUSTIBLE WALLS AND CEILINGS (Using single wall chimney connector)
The minimum lateral distance between any part of the room heater and combustible walls is shown in Figures 1
and 2.
FIGURE 1 WALL INSTALLATION FIGURE 2 CORNER INSTALLATION
FLOOR PROTECTION
If a freestanding model is to be installed on a combustible floor, a non-combustible pad must be placed below it to
protect the floor from burning material from the stove. The pad must be 36” wide by 37” deep. UL tests were
conducted without a floor protector. Therefore, the protector can be of any thickness and any K* factor.
The unit must be positioned on the pad so that there is a minimum of 16” from the front of the door opening to the
front of the pad, and a minimum of 8” measured horizontally from the sides of the fuel loading and ash removal
openings to the sides of the pad.
NOTE: For clearance reductions using wall protectors, refer to the NFPA -211 code.

Close clearance installations using listed Close Clearance pipe and 2100o HT chimney system from approved
manufacturer’s list. (See page 18)
FIGURE 3 WALL INSTALLATION FIGURE 4 CORNER INSTALLATION
TOOLS FOR INSTALLATION
Drop Cloth
Electric Drill with 3/32” drill bit
5/16” combination wrench
5/16” magnetic socket chuck adapter, 5/16” wrench (box or socket) or adjustable wrench
Socket Set
Tape Measure
Pencil
Level
PREPARING THE STOVE FOR INSTALLATION
1. Inspect the unit for any obvious physical damage.
2. Plug the power cord into a 115V AC outlet. Set switch to “Manual” and rheostat to “High” position to ensure
motor operates properly.
3. Check the primary air draft control to ensure that it operates freely.
4. Check the operation of the bypass damper control to ensure that it will open and close properly.
5. Remove any items from within the firebox. Spread the drop cloth on the floor behind the heater. Next, tilt the
heater so that the back is on the drop cloth.
6. Using a tape measure, make a line down 3” from the front of the heater.
7. Open the corresponding freestanding kit and obtain the stand. Place the stand against the bottom of the heater
(angle side to heater) at the marked line. Center the stand left and right and mark screw locations on bottom
through outer holes of stand mounting angles. Set stand aside and drill four 3/32” holes in heater bottom.
8. Obtain four 3/16” self-tapping screws and secure the stand to the heater.
9. Reposition the heater to the upright position.
12”

PREPARING THE ROOM HEATER LOCATION
1. Select an installation location that will give the best airflow from the front of the heater to the remainder of the
home.
2. Place the protective floor pad in position.
3. Place the unit on the pad making sure the minimum clearance specifications are met.
4. If connecting to an existing masonry flue, first ensure that the flue conforms to the NFPA-211 Code and/or
consult your local code for proper procedures.
CHIMNEY
This room heater must be converted to (1) a chimney complying with the requirements for Type HT chimneys in
the Standard for Chimneys, Factory-Built, Residential, Type and Building Heating Appliance, UL 103, or (2) a
code approved masonry chimney with a flue liner.
CAUTION: Certain installation types require the use of certain chimney types. Please follow these
instructions exactly.
DETERMINING THE CHIMNEY LOCATION
A. Ceiling Exit (Using Single Wall Pipe)
1. Suspend a plumb bob from the ceiling above the unit so that the weight is hanging in the center of the flue
exit. (A small weight on a string will serve as a plumb bob.) Mark the ceiling where the string is
suspended to locate the center of the chimney.
2. After locating the center of the hole, install the ceiling support box, chimney or chimney connector,
flashing, and rain cap per the chimney manufacturer’s instructions, and local building codes for
installation through combustible walls or ceilings.
3. Now connect the stove and
ceiling support box using #24
ga. minimum blued or black
steel connector pipe (DO NOT
USE GALVANIZED PIPE).
Connect each section so the
crimped end faces downward,
and secure each section to each
other using at least three (3)
sheet metal screws or rivets.
Single wall pipe is to be
connected with 3 screws or
rivets to New Buck
Corporation Chimney
Connector after connector has
been attached to stove. (See
Figure 5)
CEILING
CEILING
SUPPORT
BOX
SINGLE WALL
CONNECTOR PIPE
NEW BUCK CORP.
CHIMNEY CONNECTOR
NOTE:
SEE CHIMNEY
MANUFACTURERS
INSTALLATION
INSTRUCTIONS
FOR INSTALLING
CHIMNEY AND
CEILING TRIM
PLATE.
FIGURE 5

B. Wall Exit into Metal Tee-Box
1. Mark the plumb line on the wall directly
behind the center of the heater. (See
Figure 6)
2. Place the vertical portion of the heater
pipe and the elbow in position and
project a point onto the plumb line level
with the center of the elbow.
3. Measure up so there will be at least 1/4”
rise per foot of horizontal connector
pipe, maintaining clearances to the
ceiling as noted in Figure 6. This will
give you the center of the hole for the
chimney penetration.
4. After locating the center of the
penetration, install the tee-box and
chimney or chimney connector as per the
chimney manufacturer’s specifications
and local building codes for installation
through combustible walls or ceilings. FIGURE 6 FLUE EXIT
5. Connect the chimney collar to the tee-box using #24 ga. minimum blued or black steel connector pipe. DO
NOT USE GALVANIZED PIPE. Connect each section so the crimped end faces downward, and secure each
section to each other using at least three (3) steel sheet metal screws or rivets.
6. After securing New Buck Corporation Chimney Connector to heater, secure pipe to connector with three (3)
screws or rivets.
C. Wall Exit Into Masonry (Using Single
Wall Pipe)
Before connecting the Model 20 to a
masonry chimney, determine that the
masonry fireplace wall pass-through
connector thimble meets the NFPA-211 code
and local building codes and is a minimum of
18” from the ceiling. If the connector thimble
does not meet these codes, the pass-through
connector must be modified. NOTE: Follow
chimney or chimney connector
manufacturer’s instructions.
Connectors may pass through walls or parti-
tions constructed of combustible material if
the connector is:
(a) Either listed for wall pass-through or
is routed through a device listed for
wall pass-through and is installed in
accordance with the conditions of
the listing
FIGURE 7 FLUE GAS EXIT INTO
MASONRY CHIMNEY
CHIMNEY
PASS-THROUGH
CONNECTOR

(b) Selected or fabricated in accordance with the conditions and clearances as stated in NFPA-211 code. Any
unexposed metal that is used as part of a wall pass-through system and is exposed to flue gases shall be
constructed of stainless steel or other equivalent material that will resist corrosion, softening, or cracking
from flue gases at temperatures up to 1800oF.
In addition, a connector to a masonry chimney shall extend through the wall to the inner face or liner but not
beyond, and shall be firmly cemented to masonry.
Exception: A thimble may be used to facilitate removal of the chimney connector for cleaning, in which case the
thimble shall be permanently cemented in place with high temperature cement.
2. Once the through-the-wall thimble codes are met, simply connect the chimney collar to the wall pass-through
connector using #24 ga. minimum blued or black steel connector pipe as follows:
(a) Maintain 1/4” rise per foot (horizontal length) from the appliance to the chimney.
(b) Connect each section so the crimped end faces downward.
(c) Secure each section to each other using at least three (3) sheet metal screws or rivets.
(d) After securing New Buck Corporation Chimney Connector to heater secure pipe to connector with three
(3) screws or rivets.
D. Ceiling Exit-Close Clearance (Using Listed Close Clearance Pipe and 2100oHT Chimney System From
Approved Manufacturers List. ) (See page 18)
1. Suspend a plumb bob from the
ceiling above the unit so that the
weight is hanging in the center of the
flue exit. (A small weight on a string
will serve as a plumb bob.) Mark the
ceiling where the string is suspended
to locate the center of the chimney
hole.
2. After locating the center of the hole,
install the ceiling support box,
chimney, flashing, and rain cap.
3. Next, install a New Buck Corp-
oration Chimney Connector to the
flue of the heater.
4. Connect listed chimney to heater and
follow pipe manufacturers
installation instructions exactly.
FIGURE 8
CEILING
CEILING SUP-
PORT BOX
SIMPSON DURA-
VENT TYPE
”DVL” DOUBLE
WALL CHIMNEY
CONNECTOR
NEW BUCK
CORP. CHIM-
NEY CON-
NECTOR
NOTE: SEE SIMPSON
DURA-VENT TYPE
“DP” CHIMNEY
INSTRUCTIONS FOR
INSTALLING CHIM-
NEY.

FINAL CHECK
1. Recheck the specified clearances.
2. Remove all foreign material from the firebox area.
3. Open the primary air draft and damper bypass.
4. Plug the power cord into a 115V AC outlet. Set switch to “Manual” and rheostat to “High” position to ensure
motor operates properly.
5. Place crumpled pieces of newspaper in the stove. Light it and close the door. Ensure that the stove draws
properly through the primary draft.
6. Check for smoke leaks around the door.
7. Open the door and check for smoke escaping from the front of the stove. Smoking usually indicates a
defective or poorly positioned chimney. Some chimneys with a marginal draft can be preheated by lighting
newspaper and holding it near the open damper with a poker or fire tong. Once the chimney heats up, a proper
draft can usually be obtained.
If a thorough review of the Troubleshooting Guide in the rear of the manual does not reveal the problem, contact
your dealer for assistance.
NOTE: 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 the heater finish may be damaged.

SECTION IV
MOBILE HOME ROOM HEATER INSTALLATION
WARNING: DO NOT INSTALL IN
SLEEPING ROOM.
CAUTION: The structural integrity of
the mobile home floor, wall, and ceiling/
roof must be maintained.
Parts Requirements:
MODEL 20
New Buck Corporation
New Buck Corporation
New Buck Corporation
Part Description / Part -
• Model 20 Room Heater
• Outside air pedestal kit #P21B
• 6” Chimney Connector #MA-6CHIMCNB
UL Listed and factory approved Chimney Systems:
Simpson Dura-Vent
Simpson Dura-Vent
Security
Security
Selkirk Metal Bestos
Selkirk Metal Bestos
Metal Fab
Metal Fab
• 6” Double wall chimney connector type DVL
• 6” 2100oHT Type “DP” Chimney
• 6” Type DL Double wall connector
• 6” Security type “ASHT” high temp chimney
• 6” Model DS Double wall connector
• 6” Model SSII Type HT chimney system
• 6” Type DW Double wall connector
• 6” 2100oHT chimney