Newmac NS220 Service manual

2210254 NOVEMBER 2010
Printed:
INSTALLATION, OPERATING
and
SERVICE MANUAL
THE INSTALLATION OF THE UNIT SHALL BE IN ACCORDANCE WITH THE
REGULATIONS OF THE AUTHORITIES HAVING JURISDICTION.
HEAD OFFICE
MARKETING / PRODUCTION
Newmac Mfg. Inc.
LANCASTER CRESCENT
P.O. BOX 9, DEBERT
NOVA SCOTIA, BOM 1G0
PHONE: [phone]
FAX: [phone]
WAREHOUSE
Newmac Mfg. Inc.
430 SPRINGBANK AVE., SOUTH
WOODSTOCK, ONTARIO
N4V 1B2
PHONE: [phone]
FAX: [phone]
EMAIL: [e-mail]
HOMEPAGE : newmacfurnaces.com
NOTICE TO HOMEOWNER:
READ AND SAVE THESE INSTRUCTIONS
STATUS, CLASSIC, CLASSIC II MOBILE WOOD-STOVES
MODELS NS220, NC100, NCM120
Subject to change without notice
156156

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The Newmac NS220 (Status), NC100 (Classic) and NCM120 (Classic II, Mobile) are listed for USA and Canada under
Solid-Fuel Space/Room Heater Standards UL1482, Underwriter’s Laboratories, and ULC S627, Underwriter’s
Laboratories of Canada, by the Canadian Standards Association, a Nationally Recognized Testing Laboratory
(NRTL/C).
INSTALLATION REQUIREMENTS
The installation must comply with the requirements of the regulatory authority in your area. In the United States, the
installation must conform to the National Fire Protection Association Standard NFPA 211, Standard for Chimneys,
Fireplaces, Vents, and Solid Fuel Burning Appliances and Codes. In Canada, the installation must conform to
CAN/CSA-B365 Installation Code for Solid-Fuel-Burning appliances. Also in the United States, install in accordance
with such codes as the BOCA National Mechanical Code, the Standard Mechanical Code, and the Uniform Mechanical
Code.
In the United States room heaters intended for installation in mobile homes are to be installed in accordance with the
Manufactured Home Construction and Safety Standards published by the Department of Housing and Urban
Development (HUD).
Information that is provided on the appliance certification label takes precedence over that presented here.
When this heater in not properly installed, a house fire may result. To reduce the risk of fire, follow the installation
instructions. Contact your local building or fire officials about inspection requirements in your area.
WARNINGS
 DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE.
 DO NOT INSTALL MODELS NS220 (NEWMAC STATUS) OR NC100 (NEWMAC CLASSIC) IN A MOBILE HOME.
 DO NOT CONNECT HEATER TO ANY AIR DISTRIBUTION DUCT OR SYSTEM
 DO NOT BURN GARBAGE OR FLAMMABLE FLUIDS SUCH AS GASOLINE, NAPTHA OR ENGINE OIL.
 HOT WHILE IN OPERATION, KEEP CHILDREN, CLOTHING AND FURNITURE AWAY. CONTACT MAY CAUSE
SKIN BURNS.
 WHEN INSTALLING THE NCM120 MAKE SURE THAT THE STRUCTURAL INTEGRITY OF THE MOBILE HOME
FLOOR WALL AND CEILING/ROOF ARE MAINTAINED. SEE MOBILE HOME INSTALLATION
 DO NOT INSTALL NCM120 (NEWMAC CLASSIC II, MOBILE) IN A SLEEPING ROOM.
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.
CHIMNEY
This room heater requires at least a 6” diameter chimney flue and must be connected to either:
1. a chimney complying with the requirements for Type HT chimneys in the Standard for Chimneys, Factory-Built,
Residential Type and Building Heating Appliance UL103 HT(USA) such as GSW type JSC, or CAN/ULC S629,
650C Factory Built Chimneys (Canada), such as GSW type JM or
2. a code-approved masonry chimney with an approved flue liner.
INSTALLING HEATER
Newmac recommends that the room heater be professionally installed.
For NCM120 (Newmac Classic II Mobile) heater see additional installation requirements in “MOBILE HOME
INSTALLATION”.
1. If a factory built chimney is required, install a suitable chimney listed for solid fuel according to chimney
manufacturer’s requirements.
2. If a masonry chimney is to be used check with your local regulatory authority that it is suitable for solid fuel
operation.
3. Ensure that all other openings into the chimney flue are sealed shut and that the heater will be the only appliance
connected to the chimney flue.
4. Select location for heater close to chimney location and allowing for clearances to combustible materials. Install
additional protection for combustible materials if clearances are reduced – see REDUCED CLEARANCES.

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5. If the chimney connector must pass through a wall or partition of combustible construction, the installation must
conform to the requirements of NFPA211 (USA) or CAN/CSA B365 (Canada). Note that the chimney connector
must NOT pass through a ceiling or a roof space.
6. Place heater on a listed non combustible and non-heat conducting stove-board or durable pad, equivalent to
asbestos mill-board of at least 3/8” (10mm) thickness, according to the requirements of NFPA 211 (USA),
CAN/CSA B365 (Canada) and the requirements of the regulatory authority.
7. Using 6” (150mm) diameter mild steel (not galvanized) connector pipe and fittings suitable for solid fuel, connect the
breech outlet of the room heater to the chimney. Secure each chimney connector joint with three sheet metal
screws and connections to the appliance with a minimum of 2 sheet metal screws. For better performance, seal
each connector pipe joint with a small amount of furnace cement. When laying out the connector pipe plan for a
method of dismounting the assembly for inspection and cleaning of the connector pipes and the chimney flue.
8. Ensure that the room heater and the connector pipe locations conform to the required clearance to combustibles.
9. Ensure that a direct source of fresh outside air for combustion is available to the room heater. This is important as
replacement air for the gases which the heater will be exhausting up the chimney.
BEFORE FIRING HEATER
Please note that some parts are shipped inside the appliance. Remove and assemble as required. If necessary, slide
the firebricks back to the rear so that no gaps remain between them.
CLEARANCES TO COMBUSTIBLES – FLOOR PROTECTION
Refer to the certification label on the appliance and the following diagrams for the appropriate model being installed.
WARNING: Install on durable non-combustible and non-heat conducting pad, equivalent to asbestos mill-board of at
least 3/8” (10 mm) minimum thickness, which extends at least 8” (205 mm) from the unit on all sides, and 18” (455 mm)
from the firedoor end. Alternatively install in accordance with provisions of NFPA 211 (USA) or CAN/CSA-B365
(Canada). Do not obstruct the space beneath the stove.
WARNING: Maintain minimum specified clearances to combustible materials. Do not place fuel (wood) within specified
clearances or within space required for charging and/or ash removal.
CLEARANCE TO COMBUSTIBLES – WALLS AND CEILING
NS220 (Newmac Status)

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NC100 (Newmac Classic)
NCM120 (Newmac Classic II, Mobile) USING SINGLE WALL CHIMNEY CONNECTOR
NCM120 (Newmac Classic II, Mobile) USING CHIMNEY CONNECTOR
TYPE APPROVED FOR CLEARANCE OF 9” OR LESS
REDUCED CLEARANCES
Approved double-wall chimney connector and/or approved non-combustible protection over combustible surfaces may
permit the heater to be installed closer to combustible surfaces than the standard clearances to combustibles.
Clearances may only be reduced by means approved by the regulatory authority. To reduce clearances to combustible
materials, specified forms of wall protection must be installed. For acceptable methods and parts to be used, refer to
NFPA 211 (USA) or CAN/CSA B365 (Canada). Since municipal bylaws vary it is recommended that you (the installer)
check with your local authorities as to approved methods of wall protection for reduced clearances.

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Heater
20 in min
500mm
Ceiling
Wall
Floor
3 in min
75mm
1 to 3 ins
25 to 75 mm
7/8in min
21mm
Heater
Wall
7/8in min
21mm
Non-combustible
vertical air movement
Non-combustible
at least 8" (200mm)
from center line
Non-combustible
support spacers
wall protection
Non-combustible
air space for free
vertical air movement
Wall protection
screw
Vertical steel
channel standoff
Combustible wall
air space for free
Side view Top view
Reduced clearance
wall protection
Typical non-combustible
spacer detail
support spacers
TYPICAL SIDE-WALL PROTECTION FOR CLEARANCE REDUCTION OF 50%
RULES FOR SAFE INSTALLATION AND OPERATION
1. Always connect this heater to a residential type chimney and vent to the outside. Never vent to another room or
inside a building
2. Read these rules and the instructions carefully.
3. Check your local codes. The installation must comply with their requirements.
4. Do not connect to aluminum Type "B" gas vent. An approved masonry or residential type pre-fabricated chimney
for use with solid fuel is required. See CHIMNEYS above. The inside diameter must be at least 150 mm (6").
5. Make sure the chimney top is high enough to give a good draft. Keep the chimney and pipe clean inside to avoid
blockage. Otherwise, smoking will result.
6. Examine and clean flue pipe frequently to prevent chimney fires.
7. To prevent injury, do not allow anyone who is unfamiliar with the operation to use the heater.
8. Do not install damper or restrictions of any kind in flue pipe.
9. Burn wood only. Do not use wet or green wood. The wetter or greener the wood, the more creosote will be
produced. (See Facts on Creosote). Do not use artificial logs or barbecue charcoal fuel.
CAUTION
Indicates a situation in which injury or damage to your appliance, or both, could result if the caution is ignored.
1. Do not install models NS220 (Newmac Status) or NC100 (Newmac Classic) in a mobile home or trailer.
2. Do not install room heater in a sleeping room.
3. The NCM120 (Newmac Classic II Mobile) mobile home heater should be installed in the largest room of the mobile
home.
4. Do not operate your heater unless it is maintained in a good airtight condition - otherwise overheating will result.
5. Do not operate your heater with the loading door open as excessive temperatures could result.
6. Do not connect to any air distribution duct or system.
7. Do not use chemicals or fluids to start the fire.
8. Do not burn garbage or flammable liquids, such as gasoline, naptha, engine oil, etc, as these may cause an
explosion.
9. Never use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter fluid, or similar liquids to start or ‘freshen
up’ a fire in this heater. Keep all such liquids well away from the heater while it is in use.
10. Hot while in operation. Keep children, clothing, and furniture away. Contact may cause skin burns, do not touch
the heater until it has cooled.
11. Ensure that sufficient combustion air is available for the heater. Inadequate air can result in unsatisfactory
operation and smoking. Be sure that sufficient air is provided to exhaust fans on other household devices.
12. Install a smoke detector to warn of possible hazardous situations.
WARNING
Indicates a situation in which serious injury or death could result if the warning is ignored.
1. When this room heater is not properly installed, a house fire may result. To reduce the risk of fire, follow the
installation instructions. Contact local building or fire officials about restrictions and installation inspection
requirements in your area.

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2. Hazardous carbon dioxide or carbon monoxide gas may be produced by improper installation, operation, fuelling or
maintenance of this appliance.
3. As required by the installation codes, provide air for combustion from the outside into the room where the heater is
located. For models NS220 (Newmac Status) and NC100 (Newmac Classic), if the intake is not in the same room,
the air must have free access to the room. Install air duct for NCM120 (Newmac Classic II Mobile) as specified.
4. Do not use substitute materials or unspecified components. Suitable original-equipment replacement-parts are
available from Newmac Mfg.
5. Do not use abrasive cleaners.
6. Do not clean when hot.
NOTE: The special paint used on your heater may give off some odor while it is curing during the first few fires. Build small fires at first.
CHIMNEY CONNECTOR (STOVE OR FLUE PIPE)
Newmac wood fired heaters require 6” (150mm) diameter mild steel chimney connectors of at least 24ga (0.53mm or
0.0206ins) metal thickness, or equivalent. (Galvanized steel is not acceptable). Secure each chimney connector joint
with three sheet metal screws and connections to the appliance with a minimum of 2 sheet metal screws. For better
performance, seal each connector joint with a small quantity of furnace cement. Ensure that the vent system can be
taken apart for periodic inspection and cleaning.
Chimney connector must not pass through an attic or roof space, closet, or similar concealed space or a floor or ceiling.
Where passage through a wall or partition of combustible construction is desired, the installation must conform to NFPA
211 (USA) or CAN/CSA B365 (Canada) requirements.
The crimped end of the chimney connector fits inside the heater flue collar. Additional pipe and elbow should be
installed with CRIMPED END TOWARD THE HEATER. This will let condensation in the flue to run back into the heater.
Chimney connectors for the NCM120 Newmac Classic II Mobile home heater must be sealed with furnace cement.
REDUCING EXCESSIVE DRAFT
Where permitted by the regulatory authority a hand operated flue pipe key-damper may be installed.
CONNECTION TO A MASONRY CHIMNEY THROUGH A COMBUSTIBLE WALL
The heater may be connected to a masonry chimney, which conforms to the installation code requirements. Various
methods of connection are shown in these installation codes. Check with your local regulatory authority as to which
methods they will accept. Care must be taken when the chimney connector passes through a combustible wall to
ensure that there is sufficient clearance from the chimney connector to the combustible wall material.
Heater
Minimum chimney clearance to brick
and combustibles 2in (50mm)
Minimum clearance
12in (305mm) of brick
Chimney connector
Fire clay liner
Masonry chimney
constructed to NFPA 211
Minimum 12in (305mm)
to combustibles
Refractory cement
Stud work
Brickwork
Minimum clearance
9in (230mm)
Chimney connector
Use chimney mfr's parts
to attach connector securely
Sheet steel
supports
Chimney length flush
with inside of flue
Air space
18"
Chimney flue Chimney flue
Refractory cement
Solid-insulated
listed factory-built
chimney length
Using Fire clay liner Using listed factory-built
chimney length
Clearance to combustibles
Single wall vent connector

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TYPICAL CONNECTION TO A MASONRY CHIMNEY THROUGH A COMBUSTIBLE WALL

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CONNECTION THROUGH A MASONRY FIREPLACE
A wood-fired space heater may be connected to a masonry fireplace if:
1. There is a connector that extends from the heater to the flue liner of the fireplace.
2. The cross-sectional area of the flue is no more than three times the cross-sectional area of the flue collar of the
room heater.
3. There is a non-combustible seal below the point of entry of the connector.
4. The installation conforms to the requirements of your local codes (NFPA211 - USA), (B365 – Canada) Check with
your local regulatory authority as to which methods they will accept.
Heater
Connector extends from
appliance to flue-liner
Flow area of flue is not more
than 3x flow area of flue collar
Non-combustible seal
Cleaning and inspection cap
Listed liner section
Stoveboard or pad
TYPICAL FIREPLACE CONNECTION
CONNECTION TO A FACTORY BUILT CHIMNEY
The room heater may be connected to a listed factory–built chimney which complies with the requirements of UL 103HT
(USA) or CAN/ULC S629 (Canada). Check with your local regulatory authority for specific requirements. Follow the
chimney manufacturer’s instructions when installing a factory-built chimney.
Heater
Rain Cap
Chimney section
Storm collar
Roof flashing
Single wall shown
Stove pipe adaptor
Chimney connector
Attic insulation shield
Chimney section
Locking band
Chimney must be enclosed
in living space
Decorator ceiling support
Heater
18"
Rain Cap
Chimney section
Storm collar
Roof flashing
Wall band
Wall Thimble
Adjustable Support
Single wall shown
Stove pipe adaptor
Chimney connector
Clearance to combustibles
Stainless Tee
Firestop
Firestop
Spark ArrestorSpark Arrestor
Spark Arrestor
TYPICAL FACTORY BUILT CHIMNEY INSTALLATION

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FLUES AND CHIMNEYS – SOME BASIC PRINCIPLES
1. The chimney top should be higher than any other part of the house or any nearby surrounding objects – see
installation code.
2. A straight chimney is best.
3. A chimney should be smooth on the inside.
4. The flue pipe and chimney should be inspected periodically and cleaned if necessary.
5. The smoke flue of a chimney must not be used for ventilation purposes. All openings apart from the one serving the
heating appliance must be sealed closed.
6. The chimney connection should be as short as possible with minimum number of elbows.
7. Any horizontal pipe should be pitched upward toward the chimney at least ¼” per foot of horizontal pipe.
8. Be sure that there is at least 18” (450mm) of clearance between horizontal single wall smoke pipe and the ceiling.
9. Do not connect any other appliance to the same flue.
10. Use three sheet metal screws to secure each joint.
11. For better performance, seal each vent pipe joint with a small quantity of furnace cement. Ensure the vent system
can be taken apart for periodic inspection.
12. All openings into a chimney must be closed off airtight, except the one in which your smoke pipe enters.
13. The chimney connector should not project into the flue and must fit tightly into the chimney hole.
14. The chimney connector must fit the collar on the stove tightly and should never be reduced in diameter from that
point.
15. The chimney connector must not be made smaller where it enters the chimney hole. Enlarge the hole if necessary.
16. The hardest work for a chimney is when the fire is first started, as the air in the flue is damp and the temperature
lower than it will be when the fire is well under way.
17. The draft in the chimney is more dependent upon the amount of hot air thrown into it than upon its size.
18. A chimney may be much too large for ordinary house requirements, but there is little danger of its being too high
where draft in concerned.
19. The effective area of a chimney is the area at the smallest part. Therefore, see that it is not diminished by
obstructions.
20. Smoke and hot air will rise in a spiral column; therefore, a round flue is best, as cold air cannot fall in the corners.
21. Long narrow flues are apt to cause trouble.
22. Chimneys built on the outside of a house must be at least 8" thick to prevent chilling the flue space within.
23. The chimney must be installed in accordance with these instructions and the chimney manufacturer’s instructions.
OUTSIDE COMBUSTION AIR
Provision for outside combustion air may be necessary to ensure that the heater does not discharge products of
combustion into the house. If in doubt, it is advisable to provide additional air.
For outside combustion air make-up, Newmac recommends that an opening, of 12 sq. inches (78 sq. cm.) free area be
provided to the room in which the heater is installed. If the air is ducted from outside, a 4 inch round duct (to a maximum
of 50 equivalent feet or 15m) should provide sufficient combustion air. If a duct is used, it should terminate at least 1
foot (0.3m) from the appliance and not be directly connected to it.
Outside combustion air may be required if:
a) the heater does not draw steadily, experiences smoke roll-out, burns poorly, or back-drafts whether or not there is
combustion present;
b) existing fuel-fired equipment in the house, such as fireplaces or other heating appliances, smell, do not operate
properly, suffer smoke rollout when opened, or back-draft whether or not there is combustion present;
c) any of the above symptoms are alleviated by opening a window slightly on a calm (windless) day;
d) the house is equipped with a well-sealed vapor barrier and tight fitting windows and/or has any powered devices
which exhaust house air;
e) there is excessive condensation on windows in the winter; or
f) a ventilation system is installed in the house.
If these or other indications suggest that infiltration air is inadequate, additional combustion air should be provided from
the outdoors
Make sure that any code requirements are satisfied when installing combustion air make-up.

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DUCTING OUTSIDE COMBUSTION AIR
Indirect method – NS220 (Newmac Status) and NC100 (Newmac Classic): outside air may be ducted to a point no
closer than 300 mm (12 in) from the heater, to avoid affecting the heater’s performance.
Direct connection – NCM120 (Newmac Classic II, Mobile): This heater is approved for direct connection of outside air as
described on page 12.
POSSIBLE FLUE OR CHIMNEY DEFECTS
From the foregoing basic principles for the regulation of chimney flues, it will be seen that unsatisfactory stove operation
may be the result of any of the following possible chimney flue defects:
1. Insufficient height.
2. Surrounding nearby objects throwing air currents down the chimney.
3. Flues enlarged or contracted at some point.
4. Rubbish or soot obstruction in the flue.
5. Air leakage in cracks where mortar has fallen out.
6. Floor support or a pipe passing through or entering the flue.
7. Too abrupt offsets.
8. Other connecting flues
9. Chimney being used for ventilating basement
10. Chimneys too large for stove being used.
11. Flues being long and narrow
12. More than one smoke-pipe connected to the flue.
13. Chimney connector protruding too far into the chimney.
FUEL
Mixed dry hard wood will give the most heat. Your heater will handle most any type of wood, but some types produce
more heat than others and will hold fire longer. Coal should never be used in a heater designed for burning wood.
Never use driftwood that has been in salt water for a long period. The salt content may cause excessive corrosion and
shorten the life of the firebox.
Hard wood cut to 20” maximum length, and split 3” to 6” cross section is recommended for best operating efficiency.
CAUTION: Burn untreated wood only. Wood containing preservative, metal foils, coal, plastic, garbage, sulfur or oil
may be hazardous and damage the appliance.
LOADING OF FUEL
Do not overfill the firebox above the firebrick. Wood should be 3 to 4” below top of firebrick. A burned-out heat chamber
may result. Do not use artificial logs.
Build fire on the floor of the NS220 (Newmac Status) and on the built-in grates of the NC100 (Newmac Classic) and the
NCM120 (Newmac Classic II, Mobile) heaters. Do not use additional grates or andirons to support the fire as these may
create excessive heat.
For the most heat, combustion air must be able to circulate around and through the fire. Do not block the air entrances
inside the firebox with ashes.
PREPARATION AND STORAGE OF FUEL
Solid fuel should be cut and split prior to the heating season and stored in a well aired, dry place. Do not store fuel
within the room heater clearances or within the space required for fuelling or ash removal. Fuel should be kept at least
5ft clear (1.5m) from the heater. The space around the heater should be kept free of litter and wood residue.
LIGHTING and OPERATION
1. Set thermostat on HIGH to provide maximum draft.
2. Open loading door and lay fire, using ample kindling to ensure rapid ignition.
3. Prime chimney - hold lighted newspaper up towards flue baffle.
4. Light fire and close loading door.
5. Wait 3 - 5 minutes then add dry logs. (See section concerning Flue).

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6. Set thermostat to maintain desired temperature in room. Medium setting is normally satisfactory. Set high or lower
for maximum comfort.
CAUTION: Do not operate this heater with the loading door (or ash door if fitted) open. This heater is designed for
thermostatic operation. Continuous operation with a door open will over heat the unit.
REFUELING
CAUTION: Read the section on back-puffing before refueling heater.
The loading door should be closed at all times except when refueling. If the door is allowed to remain open, the
thermostat will not function, as it should. Before opening the loading door, make sure the thermostat is open. Allow the
fire to burn rather briskly for a few minutes. Then open the loading door slowly.
By allowing the fire to increase for a short period, a high draft condition has eliminated smoke in the firebox and the
temperature has been raised which prevents a back or down draft.
After refueling, set thermostat at the normal operating setting.
DISPOSAL OF ASHES
1. 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.
2. If the ashes are disposed of by burial in soil or otherwise locally dispersed, they should be retained in a closed
container until all ashes have thoroughly cooled.
3. Do not allow ashes to build up inside of firebox. This will reduce necessary air for proper combustion - keep ashes
away from primary air intakes.
4. NC100 (Newmac Classic) and NCM120 (Newmac Classic II, Mobile) – Keep the ash pit section free of excess
ashes. Failure to do so will cause grate warpage and burn out. Cast iron parts must be “seasoned” to avoid
cracking. Build only small fires during your early use.
OPERATING HINTS
A Heater puffs and fills room with smoke:
1. Check that sufficient outside combustion air is available to the heater.
2. Check for air leaks in chimney connector. It is of utmost importance that installations are made airtight. This is
best accomplished by using furnace cement at each pipe joint and where the elbow of first joint of pipe enters
the chimney flue.
3. Check for air leaks in chimney. Any air leaks existing between the top of the chimney vent and the heater may
cause back-puffing. Here is the reason: NEWMAC wood-fired heaters are designed to operate on an airtight
principle, when the combustion air damper has closed, which it does intermittently because it is controlled by
the bimetal thermostat, the heater has to breathe throughout the hole in this damper plate. Therefore any air
leaks existing, as mentioned above will cause the draft to draw at points where least resistance is offered, such
as at pipe joints, where pipe enters chimney flue, around loose flue thimble, other flue openings into chimney
around clean-out doors permitting air to seep into chimney. When this takes place, the gases and smoke are
not drawn off the heater in proper quantity, causing them to build up in volume within the heater, which results
in back-puffing. All such leaks must be sealed off airtight! In other words, the entire chimney pull or draft must
be on the damper entrance only.
4. Check for chimney connector or chimney clogged with bird nests, loose brick, creosote, etc.
B Heater burns too much fuel:
1. Check air leaks around loading door. NOTE: Never operate with loading door open.
2. Check for air leaks around flue collar and firebox.

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BACK-DRAFT
There are two main causes of chimney downdraft. One readily recognized is air currents being deflected down the
chimney by nearby higher objects, such as a tree, building or a hill.
The other cause, equally or more common, but seldom understood or recognized, is that in many chimneys the flue
gases are chilled too quickly as they pass up the chimney. The temperature of the flue gases drop, they become heavy,
and then other gases from the wood fire have to push a heavy column of air ahead of them in order to escape up the
chimney. This often results in back-puffing or backpressure, odors in the house, or poor combustion, which can be
annoying. Remember, the hotter the air in the flue, the stronger the draft. Any air entering the chimney, which has not
passed through a hot fire will cool the air in the flue and spoil the draft and aid in the formation of creosote.
BACK-PUFF
Back-puff is the sudden ignition of gases within the heater, which happens when air is suddenly admitted. This is
because the combustion rate in an airtight heater is air Iimited. Air for combustion is regulated by the primary air
manifold and the thermostat.
If air is suddenly admitted to the firebox by opening the loading door, air will rush in and the gases will ignite. The
combustion surge of the gases is so quick that the resulting pressure can force the hot gases out any available opening
such as the loading door. Therefore, be cautious! Open any door or opening on an airtight heater very slowly and only
then after being certain the thermostat door on the heater is open.
The possibility of back-puffing is one reason that children or anyone who is unfamiliar with the heater should be
cautioned about touching the heater.
ASSEMBLY INSTRUCTIONS - NS220 (Newmac Status)
1. Remove shipping carton.
2. Remove top of unit with louver.
3. Place firebox of heater on floor.
4. Open loading door - packed inside of heater firebox are legs, bolts, nuts, floor protectors, knob.
5. Turn over base legs down,
6. Place heater firebox on base plate and line up with 2 holes at front,
7. Secure heater firebox at front with 2 bolts and lock nuts.
8. Attach 2 clamps at back of unit to bottom base plate
9. Place louvered top onto heater firebox.
10. Install knob on lift top.
NOTES: Make sure all attached components are securely tightened to the base legs - firebox to base and clamps at
back. Check operation of loading door to be sure it locks tightly when closed and forms good seal with firebox.
BASE ASSEMBLY - NS220 (Newmac Status)

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DAMPER ADJUSTMENT – NS 220 (Newmac Status) ONLY
The adjustment plate in the damper on the NS 220 Status may be set to change the idle rate. Open to increase and
close to decrease idle rate. Leave adjustment for a few days after changing to see if idle rate is better for your situation.
See diagram on page 16.
THE SECONDARY AIR INTAKE – NC100 (Newmac Classic) ONLY
The secondary air inlet allows the proper amount of combustion air to enter the firebox ABOVE the primary burning fuel.
In various stages of operation, an airtight heater may not receive enough combustion air to properly burn all the gases
that accumulate about the main combustion. It, therefore, is necessary in some manner to admit air to the area in such
a way as to burn these gases but not to burn any primary fuel.
The secondary air intake reduces creosote accumulation by keeping a steady flame burning in the stove above the
primary fuel. It is recommended upon installation of the stove that the adjusting plate, which is visible through the
opening in the back of the stove toward the flue collar, be adjusted to a point where the secondary air is almost closed.
Once this is set for a certain locality, there should be no problems what-so-ever in the fire holding overnight and
functioning properly.
Check the secondary air inlet. It is located in the back of the heater, near the flue collar. If a creosote condition occurs,
set the opening to ½”.
MOBILE HOME INSTALLATION FOR NCM120 (Newmac Classic II, Mobile)
CHIMNEY AND COMBUSTION AIR DUCT PREPARATIONS
NCM120 (Newmac Classic II, Mobile) requires out door air and must be anchored to the floor.
Do not install the heater in a sleeping room, it should be located in the largest room of the mobile home. Only models
certified for mobile homes may be installed in mobile homes
The structural integrity of the mobile home’s floor, wall, and ceiling/roof must be maintained. Locate the heater so that
the hole for the roof support and hole in the floor for the air inlet clear between joists.
The NCM120 Newmac Classic II, Mobile) room heater must be connected to a chimney complying with the requirements
for Type HT chimneys in the Standard for Chimneys, Factory-Built, Residential Type and Building Heating Appliance
UL103 (USA), or CAN/ULC S629, 650C Factory Built Chimneys (Canada). In USA use GSW Max! Super Chimney
model JSC 2100 UL components and in Canada use GSW Super Chimney Max! model JM 2100 ULC components.
The use of the specified components is important. Do not use other than the specified components.
1. Place heater onto location allowing for proper minimum clearances to combustibles as shown.
2. Mark center point where the chimney goes through the ceiling and roof.
3. On same center outline square X = 12” x 12” (305mm x 305mm) – USA, or 14” x 14” (355mm x 355mm) – Canada
framing opening as required by approved chimney support. Check to make sure no roof joist is in the way. Should
there be one, move Heater to the left or right so that it lines up with the newly located center point/frame opening.
Maintain vapor barrier.
TYPICAL FRAMING DIMENSIONS
4. Mark outline to the outside air duct on floor again, making sure no joist has to be cut. Frame opening and maintain
vapor barrier. Duct framing dimensions are 3-1/2” x 6” (89 x 152mm).

13
3.5
NCM120
Stove Board
Air duct location
ins
mm
450200
485
150
50
195
90
810
734
cut out
200
LOCATION AND DIMENSIONS OF AIR INTAKE
DUCT HOLE AND FLOOR PROTECTOR AS SEEN FROM TOP
5. Remove the heater, cut the holes and prepare framing. Restore the integrity of the vapor barrier with suitable tape
and/or caulking.
6. Install chimney ceiling support box JSC6CCSB (USA) or JM6CCS (Canada). Slide into opening level and nail
through box framing using four 2” spiral nails or equivalent per side.
Rain Cap
Chimney section
Storm collar
Roof flashing
Ceiling Support Box
Overlap roof shingle
Spark Arrestor
TYPICAL CEILING SUPPORT BOX INSTALLATION
7. Prepare floor protector. Locate onto floor and cut 3-1/2” x 6” (89 x 152mm) hole.
8. Position floor protector and install outside air duct through floor.
Mobile Home
Heater
Screened End
Floor Bracket
Stove Board
Floor Joist
Vapour Barrier
Insulation
silicone sealant
non-combustible
Optional seal/caulk with
Outside Air Duct
INSTALLATION OF OUTSIDE AIR DUCT AS SEEN FROM SIDE
9. Place heater in position. Be sure to lift heater in front and carefully slide over air duct.
10. Attach floor anchors. Drill 1/8: diameter holes and fasten to rear of heater base and floor with sheet metal screws
(#10 x ¾”).

14
Mobile Home
Heater
Sheet metal screws
Rear of heater
Wood screws
Steel bracket
Floor
Stoveboard
FLOOR ANCHOR INSTALLATION AS SEEN FROM SIDE
11. Use chimney connector or stovepipe adapter JM586ASE for connecting approved pipe between chimney and cast
flue collar on top of heater.
12. Install chimney length as required.
NOTE: The chimney must be at least 3 feet above the highest point where it passes through the roof of the building
and not less than 2 feet above the highest roof surface or structure within 10 feet horizontally. Not more than 8” of
chimney cap above the top of the flue may be considered in computing this height.
Min 10 ft
Min 3 ft
Min 2 ft
Min 3 ft
0 to 10 ft
Min 2 ft
BASIC RULE FOR CHIMNEY TERMINATION HEIGHTS ABOVE ROOF
13. Install roof flashing (JSC6 ATC, AFA, AF2, or AF3 - USA), (JM6 ATC, F1, or F2 – Canada), storm collar and rain
cap.
a. Ensure that you have the proper roof flashing; check your roof pitch using a level and two rulers.
Level
12" rule
Roof
Pitch 3/12
ROOF PITCH
See the manufacturer’s catalog and instructions for flashing and pitch recommendations.
b. Slide a Roof Flashing suitable to your roof slope over the chimney. Place the top edge of flashing plate under
the shingles. Tighten the roof-flashing band around the chimney.
NOTE: At the top edge of the flashing plate, lift the shingles and nail the plate to the roof deck. Then cement
shingles to plate with suitable waterproof mastic.
Chimney roof flashing
Roof shingles
Shingles over flashing
Flashing over shingles
Direction of slope
water runoff
Chimney opening
Roof cement as required
ROOF FLASHING

15
c. Ensure the chimney is plumb. Square up the flashing plate and nail in place to the roof deck. Use 12 nails and
neoprene washers or cover the heads with a suitable waterproof mastic,
Rain Cap
Chimney section
Storm collar
Roof flashing
Ceiling Support Box
Overlap roof shingle
Spark Arrestor
TYPICAL CHIMNEY INSTALLATION
d. Wrap the Storm Collar around the chimney above the flashing. Secure the ends together loosely with the nuts
and bolts supplied. Slide the collar down the chimney until it contacts the flashing guides and/or draw band.
Tighten the nuts and bolts and seal the Storm Collar to the chimney with suitable waterproof non-combustible
mastic. After installation check to ensure that the flashing guides maintain an air space between the Storm
Collar and the cone flashing.
WARNING: Do not block the air space between the storm collar and the cone flashing.
e. The flashing and storm collar should be painted to match the roof shingles. This will extend its life and improve
the appearance. Clean and paint with suitable painting products.
f. Continue adding chimney lengths until the proper height is achieved. Install a rain cap (standard or deluxe
model) and lock it in place by turning clockwise until tight.
g. If the chimney extends more than 5’ (1600mm) above the roof deck, roof guys are required. GSW Model J6RG
roof guy kit is used this application. The draw band must be clamped around the chimney and the two legs
bolted to the roof. Seal the roof with a suitable waterproof mastic. Tighten the two leg clamps to fix the position
of the telescopic legs.
CHIMNEY REMOVAL FOR MOBILE HOME TRANSPORTATION
Before transportation of the mobile home, the chimney connector should be disconnected and the chimney removed
according to the chimney manufacturer’s instructions. It should be replaced, secured and re-sealed before the heater is
used.
USING HEATER FOR EMERGENCY COOKING – NS220 (Newmac Status) and NC100 (Newmac Classic) ONLY
This heater is designed so that the cabinet top can be lifted and cooking vessels set on top of the firebox for emergency
cooking or water heating.
NOTE: This lift top feature is intended for emergency cooking only, such as when regular cooking facilities are
temporarily out of service. When it is being used as a heater, the cabinet top must be in place. The automatic
thermostat will only work properly when the cabinet top is in place and the cabinet door is closed. When the top is open
it is necessary to operate the thermostat manually.

16
CREOSOTE AND THE 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 chimney connector and chimney should be inspected at least once every two months during the heating season to
determine if a creosote build-up has occurred.
If creosote a significant layer of creosote (1/8 inch, 3mm or more) has accumulated it should be removed to reduce the
risk of a chimney fire.
CAUTION: Increase the minimum fire only as much as necessary to reduce the formation of tars. Increasing the
minimum fire may cause overheating on warm days.
Establish a routine for the fuel, wood burner and firing technique. Check daily for creosote build-up until experience
shows you how often you need to clean to be safe. Be aware that the hotter the fire the less creosote is deposited, and
weekly cleaning may be necessary in mild weather even though monthly cleanings may be enough in the coldest
months. Contact your local municipal or provincial fire authority for information on how to handle a chimney fire. Have a
clearly understood plan to handle a chimney fire.
Creosote is caused from the condensation of the vapor that exists within the escaping smoke – drier wood is less likely
to form creosote. The density of the vapor is dependent upon the moisture content of the gases in the flue. The hotter
the escaping gases in the chimney, the less creosote formation you will have. A well-constructed chimney with smooth
liners and a flue that is well insulated from the colder air is best. Chimneys built with porous brick, or ones with loose
brick, or ones constructed with stovepipe are undesirable because the colder air condenses the escaping gases much
more rapidly than they are in a well-constructed chimney.
The formation of creosote could also be caused by a severe downdraft condition caused from taller objects surrounding
the chimney such as a hill, trees, other buildings, or chimneys of poor construction.
Under such conditions, the cold air drifts into and down the chimney, chilling the escaping vapor within the smoke below
the dew point and depositing this residue on the inside of the chimney walls.
It is important that you inspect the chimney connector and chimney flues more frequently than every 1 to 2 months until
you see what pattern of deposition is occurring.
WARNING: If wood with a high pitch content is used or the chimney is not properly constructed or insulated or if the
chimney connector is excessively long or has several elbows or turns, more frequent inspections must be made.
If creosote is a problem, the following may reduce it:
1. Dry wood.
2. More frequent refueling.
3. Avoid prolonged operation of the heater with the thermostat at its lowest setting.
4. Use logs as large as possible.
A CAUTION NOTE ABOUT CHIMNEY FIRES
If you suspect a chimney connector or flue fire, you should reduce all combustion air to a minimum.
Turn the heater thermostat knob to LOW. Make sure that the loading door (and the ash door on the NC100 and
NCM120 Classic heaters) is completely closed and secure. If necessary call you local fire department. Do not take
down the flue pipes until the fire has been completely extinguished.
When wood is burned slowly such as under low fire conditions, tars are formed in the flue products. These tars, in time,
are deposited on the inside of the flue and chimney pipe. With enough build-up these tars can ignite and cause a fire
inside the chimney until the burnout is complete. A listed chimney is sufficient to contain the fire, but distortion can
result. If such a burnout should occur, your chimney should be inspected immediately and any deformed, warped or
otherwise distorted parts replaced before further use.

17
RECOMMENDED BI-METAL AND DAMPER SETTING
The thermostat control (bi-metal) was adjusted at the factory at room temperature. Do not tamper with the control or the
damper lift mechanism as this may cause the room heater to overheat.
Bi-metal control
Chain
Draft Adjuster
Combustion
Air damper
Bi-metal control
Chain
Firebox
Combustion
Air damper Door
Thermostatic Thermostatic
NC100, NCM120, Classic and Classic II NS220 (Newmac Status)
CARING FOR ENAMELED PARTS
NC100 (Newmac Classic) and NCM120 (Newmac Classic II, Mobile)
This heater has enameled outside jacket. Enamel baked onto the steel or iron is very serviceable, but it will not stand
rough handling or abuse. When setting up your heater use care in handling. Clean with soap and warm water when
heater is not hot. DO NOT use any acids or scouring soap, as these wear and dull the finish.
LOADING DOOR ADJUSTMENT
Should it be necessary to adjust or tighten the loading door ( NS220 - Key 20: NC100 - Key 32: NCM120 - Key 36)
remove bolts in door latch bracket (NS220 – Key 28: NC100 - Key 39: NCM120 - Key 43) place washers inside
(between bracket and front) this will adjust latch bracket closer to front and tighten door seal.
REPLACEMENT OF FIREBOX LINERS – NS220 (Newmac Status)
All firebox liners with the exception of the front liners and economizer (Key 11, 23 and 24) are secured without the use of
screw or bolts. To achieve this they have to be placed any or all liners this sequence must be followed otherwise they
cannot be removed.
Removal Procedure:
1. Remove flue baffle (Key 14) by lifting it up and sliding it forward through the door opening.
2. Lift up and slide top back heat liner (Key 15) forward and through door opening.
3. Slide upper side liner - left or right – (Key 27) toward back of firebox and remove through door opening
4. Remove refractory bricks on each side (5 per side).
5. Take out bottom back heat liner (Key 16).
6. Lift up and remove lower right side brick liner (Key 26).
7. Remove bottom bricks
8. Lift up and remove lower left side brick liner
9. Slide angled side bricks (2 per side) from side brick liner.
NOTE: To remove economizer and/or front liners unscrew fastening bolts and lift out.
To replace the firebox liners follow the removal procedure in reverse, i.e. start with Step 9 to slide side bricks into liner
etc.

17
CIRCULATING FAN MODEL NBK-100
Optional for NC100 (Newmac Classic) and NCM120 (Newmac Classic II, Mobile) ONLY
NO OTHER CIRCULATING FAN IS CERTIFIED FOR THESE HEATERS
INSTALLATION: To install on heater, place outlet of fan box assembly into air duct located at bottom of rear panel.
Then attach fan assembly to rear panel with sheet metal screws provided. (Use #30 Drill). Make sure that the power
supply cord to the fan box is protected from possible damage.
OPERATION: Use 115V 60Hz 1PH AC current only.
1. After the heater is in operation, and the toggle switch is in the automatic position, the circulating fan will operate. It
is controlled by a built-in heat sensing fan switch.
2. The heater back panel must get hot to operate the fan switch, which controls the blower motor. The disc thermostat
fan switch must touch the rear panel when set in the automatic position.
3. Normally it takes 30-45 minutes for the fan on the heater to operate after starting.
4. The circulating fan may also be set for continuous operation by setting the switch in the “ON” position.
Oil the blower motor twice a year with (2) drops of S.A.E. 30 oil
Heater rear
Optional blower
NBK-100
Classic Models NC100 and NCM120
Secure with sheet
metal screws
Key No. Part No. DESCRIPTION
1 2220035* Fan Housing Assembly
2 2220035* Inside Bracket
3 2220035* Fan Motor
4 2040033 Disc thermostat
5 2220035* Snap Bushing
6 2220035* Strain Relief
7 2220035* Cord with Plug
8 2040034 Toggle Switch
* Part Number 2220035 is a sub-assembly including all the parts indicated

18
FLOOR BRACKET INSTALLATION - NCM120 – NEWMAC CLASSIC II MOBILE
1. After heater is in position, set brackets in position as shown.
2. Drill 1/8” diameter holes in heater casing and floor for screws.
3. Insert floor wood screws, provided, (#10x1-1/2”) through bracket into floor.
4. Insert sheet metal screws, provided, (#10 x ¾” sheet metal) through bracket into casing, and secure.
Part Number Part Number required
4110562 Floor bracket 2
4100148 Screws bag 1
TO ORDER REPAIR PARTS
This manual will help you to obtain efficient, dependable service from the heater, and enable you to order repair parts
correctly. Keep in a safe place for future reference.
The use of the specified components is important. Do not use other+ than the specified components.
When ordering, always give the full model number which is on the identification plate attached to the back of the heater,
and always give the following information:
1. The Part Number (not key number)
2. The Part Description
3. The Model Number of the appliance
4. Number of Parts Required
WARRANTY PROCESSING
The following is required to process warranty claims:
1. Owner’s name and address
2. Installer’s name, address, and phone number
3. Serial Number
4. Model Number
5. Installation Date
Newmac must issue a “Returned Goods Number” prior to acceptance of returned goods.
Refer to your “Newmac Wood-stove Limited Warranty” for terms and conditions.