Navigator NSW1. User manual

Model # NSW1. Marine Stove
Installation and Operating Instructions
SAFETY NOTICE: IF THIS SOLID FUEL MARINE STOVE IS NOT
PROPERLY INSTALLED AND OPERATED, A BOAT OR HOUSE
FIRE MAY RESULT. FOR YOUR SAFETY, FOLLOW THE
INSTALLATION DIRECTIONS. CONTACT YOUR LOCAL COAST
GUARD, MARINE SURVEYOR, BUILDING OR FIRE OFFICIALS
ABOUT RESTRICTIONS AND INSTALLATION INSPECTION
REQUIREMENTS IN YOUR AREA.
Navigator Stove Works, LLC.
www.marinestove.com

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UTABLE OF CONTENTSU
GENERAL INFORMATION
UMARINE INSTALLATION
U1. POSSIBLE HAZARDS TO AVOID WHEN USING THE U#NSW1.UON BOARD
2. INSTALLATION & SAFETY NOTICE
3. OPERATION
4. MAINTENANCE
URESIDENTIAL INSTALLATION
U5. POSSIBLE HAZARDS TO AVOID WHEN USING THE U#NSW1.UAT HOME
6. INSTALLATION & SAFETY NOTICE
7. OPERATION
8. MAINTENANCE
U WARNING U
DO NOT LEAVE THIS STOVE
UNATTENDED WHILE IN OPERATION
SAFE EFFICIENT OPERATION OF THIS
MARINESTOVE IS THE PRODUCT
OF TWO FACTORS:
UA CAREFULLY TENDED FIRE AND
PROPER INSTALLATION

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UGeneral InformationU
This owner’s manual describes the installation and operation of Navigator’s
Model # NSW1. Marine Stove for wood. This marine stove may be installed
within a boat or a land-based residence. As a result, there are two sets of
instructions which detail the proper installation and operation for each
application. Please follow the instructions which apply to you. Do not
interchange installation requirements.
Codes and Regulations compiled from the following sources serve as the basis
for the instructions contained in this document:
ABYC “A-7” *1
NFPA “302” *2
NFPA “211” *3
40 CFR 60 - AAA *4
CAN/CSA B365-M91 *5
(See Appendix for Details)
Navigator’s Model #NSW1. Marine Stove has met the U.S. EPA’s emission
standards for residential wood heaters sold after May 15, 2015 (crib wood
standard).
Not approved for sale after May 15, 2020
It has also passed Washington State emission standard # WAC 150-31-200.
This stove has a particulate emission rating of 3.5 G/Hr. @ 86% Efficiency.
This efficiency rating was determined as a result of testing based on EPA Test
Method 28 / Sec.5.1 & Sec.5H / Cat.2 and CSA B415.1
Btu Rating of 11,400 – 19,400.
This wood heater needs periodic inspection and repair for proper
operation. It is against federal regulations to operate this wood heater in
a manner inconsistent with operating instructions in this manual.
This wood heater has a manufacturer-set minimum low burn rate that
must not be altered. It is against federal regulations to alter this setting
or otherwise operate this wood heater in a manner inconsistent with
operating instructions in this manual.
When installing, operating, and maintaining your #NSW1, follow the guidelines
given in these instructions. Save these instructions and make them available to
anyone using the stove.
A number of areas in the USA & Canada require a building permit to install
a solid-fuel burning appliance. NFPA 211 (National Fire Prevention
Association, Standard for chimneys, fireplaces, vents and solid-fuel

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burning appliances) or CAN/CSA B-365 (Installation code for solid-fuel
burning appliances & equip.) may apply to the installation of solid-
fuel burning appliances in your area. Your stove dealer has knowledge of
your local codes and can provide assistance in making sure your
installation is safe and legal. Also contact your insurance representative,
building inspector, marine surveyor, US & CDN Coast Guard, or local fire
officials to determine what regulations apply in your area.
UMARINE INSTALLATION
U
1. Possible Hazards to Avoid
Any use of fire in a boat represents a certain danger. With intense over firing,
temperatures on the surface of the #NSW1. can exceed 1000°F. (536°C).
Comply with the following guidelines:
•Never install a #NSW1. in a boat that is powered by a gasoline engine.
•Never over fire the stove. If any part of the stove or chimney glows, you are
over firing, and a boat fire or serious damage to the stove or chimney could
result. Immediately close down the air controls if you notice this condition.
•Teach children that the stove is hot and must not be touched.
•Never use gasoline, or gasoline-type lantern fuel, kerosene, diesel, charcoal
lighter fluid or similar liquids to start or “freshen up” a fire in the stove. They
can ignite with explosive force, causing bodily injury or death. Keep all such
liquids far away from the stove while it is in use.
•Never use the stove if there are combustible vapours in the boat. The vapours
from certain cleaning fluids, adhesives, and polyurethane paints are a few
examples of combustible vapours. Remember that operating a solid-fuel fired
marine stove is a source of “open flame”.
•Keep combustible materials far away from the stove.
•A vent system or other means shall be provided to allow the discharge from
the boat of hydrogen gas released by the battery. Battery boxes with a cover
that forms a pocket over the battery shall be vented.
•Do not locate traditional marine oil lamps directly over the stove. Oil spillage
onto a hot stove will cause a fire.
•Do not dry clothes over the stove, since they could fall and ignite.
•Fabrics located above and within 39” of the stove used for decorative or other
purposes shall be flame resistant in accordance with NFPA 701, Standard
methods of fire tests for flame-resistant textiles & films.
•To prevent injury, do not allow anyone to use this stove who is unfamiliar with
the correct operation of the stove.

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•Avoid creating a “Low Pressure” condition in the space where the stove is
operating, such as by operating an exhaust fan. A low pressure condition could
cause poisonous gasses to be drawn out of the stove and into the room. Carbon
monoxide (CO) is toxic, so please follow the guidelines in this manual to avoid
smoke “roll out” from the burn chamber. You can prevent a low pressure
condition by providing adequate outside combustion air within 24 inches of the
stove. Keep a port, hatch, or window open while operating the stove!
Install a smoke/carbon monoxide monitoring device in the space the stove
is installed and in any and all adjacent cabins. Maintain the device as
directed by the manufacturer.
•If for some reason smoke “rolls out” of the stove, it might activate a smoke
alarm or carbon monoxide detector.
•To avoid smoke or flame spillage, open the air adjuster and the stove pipe
damper before opening the door to fill the stove with fuel.
•Never operate the stove if it is damaged, missing parts, or has been modified
in any way.
•Always use protective gloves when adding fuel to the fire.
•Do not operate the stove during severe storm conditions at sea. Stow cook
surface cover plates, air adjuster and handles.
*Please note: The attached CO data submitted in the stove certification
application and the expected variations for different operation conditions from
Min.Low Output to Max.High Output.
2. Installation
SAFETY NOTICE: IF THIS SOLID FUEL MARINE STOVE IS NOT
PROPERLY INSTALLED AND OPERATED, A BOAT FIRE MAY
RESULT. FOR YOUR SAFETY, FOLLOW THE INSTALLATION
DIRECTIONS. CONTACT YOUR LOCAL COAST GUARD,
MARINE SURVEYOR OR FIRE OFFICIALS ABOUT
RESTRICTIONS AND INSTALLATION INSPECTION
REQUIREMENTS IN YOUR AREA.
Please read this entire manual before you install and use your new stove.
Failure to follow instructions may result in property damage, bodily injury, or
even death.
We recommend that you have your #NSW1. Installed by a
professional installer of solid-fuel marine stoves.
Remove Stove From Crate

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When removing the stove, UDo not lift the stove by it’s stainless steel “sea
rail.” UThis part is only designed for keeping cook pots in place while at sea. Lift
the stove free from the crate by grasping the outer-most edges of the cast iron
top.
Carefully remove the cover plate, and cover plate handle from inside the foam
packing.
Use a soft cloth or mat and “tip” the stove onto one of it’s sides (an old piece of
carpet works well to protect the porcelain). Watch the door as you do this!
Before you carefully right the stove, check to see that the four thru-bolt wing
nuts are just “hand tight”.
Under no circumstances should you tighten these fasteners with a wrench
or pliers. This could cause one of the castings to fracture when the stove
heats up.
Place the circular cover plate in its place on the cook surface.
Planning the Installation....
If you are considering installing a #NSW1. in a vessel which has had a
previously installed stove hearth and/or chimney pipe, it is critical that you have
the existing components inspected for safety.
Safe stove installation involves several aspects: (A) the chimney pipe / deck
iron combination. (B) protecting combustible materials in the vicinity of the
stove. (C) securing the stove. Each of these aspects is equally important for a
safe and secure installation. Consult with a Marine Surveyor. If your craft is
insured, please also check with your agent regarding installing a marine stove.
Efficient use of this stove will be assured by installing it in a location where its
heat output will contribute the greatest impact to the space(s) requiring heat.
A. Chimney Pipe
The chimney pipe should be of 4” Dia. stainless steel with a minimum thickness
of 26 gauge. Secure sections of pipe together with three sheet metal screws per
joint to insure that the sections will not separate.
Generally, chimney pipe sections must be attached to each other with the
crimped end Utoward the stoveU. This allows any small amount of condensed
creosote to run down toward the hot stove rather than onto the outside of
the pipe. The pipe connection at the oval flange on the stove top should
however go OVER the oval collar.
Single-wall smoke pipe and stacks shall have a minimum clearance of 9
inches (23 cm.) from combustible materials including painted materials or
shall be separated by fire resistant thermal insulation that is acceptable to the
authority having jurisdiction. NFPA Standards #302 / 211

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Consult with a Marine Surveyor to determine the protection system best suited
for your installation if you cannot maintain the minimum 9” clearance. This
system will commonly consist of a layered panel, made from 20 Ga. sheet
stainless and 5/8” mineral board, spaced 1” from the combustible surface to
which it is attached.
*Exception: at decks equipped with a water iron. (NFPA 302, 6 - 3.3)
UWater Deck Iron
UEither a bronze or a cast iron “water deck iron” shall be used. This traditional
fitting contains water in a trough which surrounds and cools the chimney pipe as
it passes through the deck. Follow manufacturer’s installation & operation
instructions when installing this hardware. Keep the trough filled with water
while operating the stove.
Permanent installations shall make use of double or triple wall stainless pipe or
shall have a safety grille attached to the outside of single wall pipe which will
eliminate accidental direct contact with hot piping. Double or triple-wall stove
pipe meeting the requirements of UL 103, Standard for Safety Factory-Built
Chimneys for Residential Type and Building Heating Appliances, shall be
installed in accordance with the specifications of the manufacturer.
A flue damper shall be installed in the pipe roughly 30” above the cook surface
of the stove. The damper is a critical component which will enable the user to
control the stove’s draft. Do not install a #NSW1. without a damper.
UFlue Pipe Draft DamperU
Do not use aluminum or galvanized pipe as chimney pipe. These materials
cannot withstand the operating temperatures of a fire and can give off toxic
fumes when heated. Round stove pipe must be hand formed to an oval shape
which will then slide onto the stove’s oval flue collar.
The connection between the 4” chimney pipe and the stove’s oval flue
collar should be sealed (from inside) with stove cement after the pipe is
installed. Design the piping so that no more than a total of two 90 degree
bends are utilized. Horizontal runs shall rise at 1/4 inch per foot.
Chimney piping may not be run through a closet, locker or other concealed
space. Always connect this stove to a chimney and vent to the outside of the
vessel. Install a Smoke Head which is designed to minimize water entry, spark
emission and back draft. In very bad weather do not operate the stove. Safely

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stow the smoke head and install a plug which will effectively seal the deck
iron‘s opening in the event of the vessel overturning.
USmoke HeadU
Additionally, install a UL listed spark arrester if the smoke head you have
chosen does not incorporate one into it’s design.
Do not position the deck iron / smoke head combination within 20” of deck
mounted fuel refill fittings or fuel tank vents. Position the smoke head to
minimize exhaust re-entry into the boat.
B. Clearances to Combustibles
Floor Protection....
The #NSW1. shall be mounted on a non-combustible base (preferably a
composite panel of 20Ga. stainless steel and non-asbestos mineral board).
As well as being non-combustible, the base must have a minimum R-Value
(thermal resistance) of R2.
For example, 1/2” of Thermafiber's K-FAC 19 has an R-Value of 1.28.
TO ORDER PLEASE CONTACT: Foundry Service @ 562-945-6511 /
foundryservice.com / Speak with Dave or Blake.
A minimum clearance of 1”- 25mm shall be maintained between the composite
panel and the “decking” to which it shall be securely fastened. Mounting
hardware which extends from the panel into combustibles may be used only at
the lateral extremities of the panel. Mounting hardware must allow full
ventilation of the air space between the “deck” and the composite panel.
The non-combustible base, or “deck protector panel”, shall extend out from the
sides and back of the stove to exactly 1” from all adjacent vertical surfaces
surrounding the stove. (i.e., walls, bulkheads, hull, cabinetry, furnishings which
will normally be protected by an engineered protection system. See Diagram
#3).
The “deck protector panel” shall extend out from the front of the stove a
distance equal to the dimension of the underlying platform.

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Floor protection shall also be used under the stove pipe and must extend 2”
beyond either side of the pipe.
CAUTION: First install a non-combustible stove base and/or wall shielding to
provide a safe underlayment for ceramic tile. Tile must not be used as the sole
form of thermal protection due to its ability to conduct significant heat to
combustible materials to which it may be directly attached. Ceramic tile shall be
incorporated into a hearth design Uonly as a decorative surface treatment.U
Plastics, fiberglass reinforced plastics, wood, or paper products are combustible
and must not be used.
Clearances to Adjacent Combustible Materials....
Three basic requirements determine the clearance values necessary for the
stove’s installation. Failure to follow these requirements may result in property
damage, bodily injury, or even death.
RULE 1. Exposed materials and finishes within 24” (61Cm) of heat generating
surfaces of the stove shall have a “flame spread index” of not more than 75
as determined in accordance with NFPA 255, Standard Method of Test of
Surface Burning Characteristics of Building Materials.
RULE 2. The sides, back, and front surfaces of the #NSW1. shall have a
minimum clearance of 9” (23Cm) from the exposed combustible
materials and finishes which shall meet the requirements of RULE 1, or
shall be separated by an engineered protection system acceptable to the
authority having jurisdiction. Engineered systems installed for the protection
of combustible material shall reduce the temperature of such materials to
90°F (50°C) rise above ambient. System design shall be based on applicable
heat transfer principles, taking into account the geometry of the system, the
heat loss characteristics of the structure behind the combustible material,
and the possible abnormal operating conditions of the heat-producing
sources.
RULE 3. Minimum clearance to combustible ceilings or materials above the
cook surface of the #NSW1. shall be 36” (92Cm), or shall be separated by an
engineered protection system acceptable to the authority having jurisdiction.
Engineered systems installed for the protection of combustible material shall
reduce the temperature of such materials to 90°F (50°C) rise above ambient.
System design shall be based on applicable heat transfer principles, taking into
account the geometry of the system, the heat loss characteristics of the
structure behind the combustible material, and the possible abnormal operating
conditions of the heat producing sources.
UMarine installations will normally require considerable heat-shielding due
to the fact that most boatbuilding materials or finishes located within 9” of
the sides and back of the stove WILL NOT HAVE the required rating of FSI
75 or less.

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UCommon Bldg. Materials & Flame Spread Indices:
UWhite Oak 100
Douglas Fir 83 - 100
Eastern White Pine 85
Southern Yellow Pine 130 - 195
Western Spruce 100
1/2” Exterior Douglas Fir Plywood130- 150
3/4” Birch Plywood (veneer core) 114
1/2” Particleboard 156
1/4” Lauan Plywood 150
3/8” FRP (polyester & glass fiber) 200+
K FAC 19 Mineral Fiber Board 25
Insulation material used as part of a clearance reduction system shall also have
a thermal conductivity (K-Value) of 1.0 (Btu-in.) / (ft 2 -hr-°F) or less.
Insulation board shall be formed of noncombustible material.
Also see for further information:
http://hearth.com/articles/64_0_1_0_M1.html
Please Remember....
A combustible is anything that can burn. In the case of stove installations, these
materials may not be plainly visible. Consult your local fire officials if you are
unsure about the combustible nature of a material in the vicinity of your planned
stove installation. Fire resistant materials are difficult to ignite but they will
burn!
Diagrams #1 & #2 give the required clearances that must be maintained from
unprotected combustible materials or finishes.
Diagram #3 illustrates an example of an engineered protection system that
would be used to shield combustible materials.
UConsult with your local Marine Surveyor to determine suitable design
parameters for your particular vessel
U