Sig Marine Cozy Cabin Solid Fuel Heater Operating And Installation Instruction Manual

Natural Draft Solid Fuel Heater

Operating and Installation

Instruction Manual

Cozy Cabin Solid Fuel Heater

** Please read from beginning to end before installing and

operating.

Quality Controlled by- Doug & Don

Form#7.2-230 Issue#1 March 3, 2010

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Table of Contents

Table of Contents… Pg. 2
Warnings… Pg. 3

1. About a Natural Draft Solid Fuel Heater… Pg. 3

2. Important Notes... Pg. 3

3. Ventilation… Pg. 4

4. How does the Chimney affect the Heater… Pg. 4

- Testing your Draft… Pg. 6

- Downdraft… Pg. 6

5. Installing your Heater… Pg. 6

- Location… Pg. 6

- Safety Clearances… Pg. 6

- Mounting… Pg. 6

- Location Diagrams… Pg. 7

- Chimney Pipe… Pg. 7

- Chimney Pipe Diameter… Pg. 7

- Barometric Damper… Pg. 8

- Deck Fitting… Pg. 9

- Deck Fitting Diagram… Pg. 9

- Exhaust Cap… Pg. 9

- Heater Installation Diagram… Pg. 10

6. Heater Operation… Pg. 11

- Fuel… Pg. 11

- Lighting Procedure… Pg. 11

- Exterior Surface… Pg. 11

7. Warranty… Pg. 12

8. Registering your Warranty… Pg. 15

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WARNINGS

- Do not operate this heater unattended.

- When operating the heater there MUST be an open fresh air vent.

- Do not attempt to burn oil or gas fuels in this heater.

- Do not overfill the combustion chamber.

- Install a CO alarm.

- Do not operate this heater if you are experiencing downdrafts.

- WARNING: This heater and exhaust pipe gets very hot during operation,
use hand protection and caution.

- Follow ALL installation and operation procedures.

1. About a Natural Draft Solid Fuel Heater

This bulkhead mounted solid fuel heater is a reliable yet beautiful source of
heat. The maximum output of this heater is meant for 8000 btu’s. This heater
is designed to heat a small area or as an esthetic feature of your boat.
Combustion options include a 1” piece of wood, a handful of charcoal
briquettes, peat, coal or presto log. Over filling of the combustion chamber
can cause damage to the heater. Built-in manual damper and ash drawer lock
included.

To obtain a clean and efficient combustion, 3 factors must be in a balanced
proportion.

1. Draft- the volume of air rising through the exhaust chimney.

2. Oxygen- replacement supply of fresh air.

3. Fuel- Input in proportion to the supply of draft and oxygen.

2. Important Notes

Here are some important notes to remember when planning and/or installing
a Sig Marine solid fuel heater:

• Mounting & location, minimum 4ft and a maximum 10ft of chimney,
and the location of hole for the chimney.

• Unrestricted permanent fresh air inlet required to draw in outside
air needed for correct operation.

• A barometric damper must be installed to help regulate the draft. A
barometric gives you more control in the “fuel to air” mixture needed
for correct combustion. (See Pg. 8).

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3. Ventilation

You MUST replace the air inside your boat at the same rate that the heater is
removing it. The higher the heater’s burning rate, the more air the heater will
require. If the air flow is blocked or restricted, the heater will burn inefficiently,
create soot, blow out and can be a health hazard.

A permanently open fresh air inlet MUST be installed or dedicated to the heater.
This inlet must be at least 3" in diameter. Ducting fresh air to the heater is also
an option. It is important to create and maintain a positive pressure inside the
boat. High winds can draw air out from the boat and thus create a negative
pressure. This condition can result in down drafts. Ensure that when you do
have windows open that they do not create a suction effect in the cabin due to
the window’s position and the wind direction. In a similar way, it is possible for
the air intake on your engine to suck the air out of a cabin if it is not properly
vented.

Your heater is a natural draft appliance and it creates its draft pressure like a
chimney in a wood stove. The rising, heated air in the chimney pulls fresh
air into the heater as it rises up the chimney and exits the flue cap. The
greater the draft pressure, the more able the heater will be to resist strong
winds, overcome flue elbows that inhibit draft and the hotter you will be
able to get your heater without sooting. A CO alarm should be installed in
the boat.

4. How Does the Chimney affect the Heater?

The heater does not create the draft for a natural draft appliance to operate; it
is the chimney that creates the draft for operation. The purpose of a chimney
is to take the combustion products (smoke and gasses) from the appliance to
the atmosphere outside your boat, and at the same time, to draw air in for

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combustion into the appliance. This movement of combustion air and
exhaust is called draft.
In essence, it is the difference in pressure between the air inside the chimney
flue and the outside air that creates this movement. Warmer, lighter gasses in
the flue tend to move upward.

To keep the pressure conditions favorable, we need a tall column of warm
air inside the chimney, and cooler air outside. The warm air will tend to rise,
drawing the exhaust from the appliance out. As air exits the chimney, fresh
air for combustion is drawn into the appliance. The stronger the upward draft
in the chimney the more likely you won’t experience downdraft.

Important Factors of the Chimney

Since draft is a measure of pressure, chimney draft is affected by pressure
conditions in the boat. Several factors come into play:

1. Adequate air. First, there must be adequate air movement into the
boat to make up for the air exiting through the chimney. If the boat is
very tightly insulated, the volume of air drawn up the flue will exceed
the volume of air entering the boat, and the boat will gradually
become depressurized. With lower pressure in the boat than outside,
there will be a tendency for air to be drawn into the boat from all
available openings including down the chimney.

2. Air movement in the boat. Second, air movement in the boat must
not interfere with the chimney. The entire boat then becomes like a
big chimney. As air flows out through the one window, air is drawn
from another to replace it. This is called the stack effect, since the
boat acts like a stack, or chimney. If the stack effect is powerful
enough, it will overcome the chimney's upward draft and pull
replacement air (and smoke) into the boat through the chimney.

3. Competition for available air. Third, there must not be too much
competition from other devices in the boat, such as exhaust fans, a
large engine or air-exchange systems. If something else is sucking the
air out of the boat, the chimney might not be powerful enough to
overcome it, and exhaust might be drawn into the boat from the
chimney.

4. Proper chimney design. And finally, a chimney must be designed to
accommodate the volume and type of exhaust being emitted by the