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The burning of any of these materials can result in the
release of toxic fumes, or render the heater ineffective
and cause smoke.Never use gasoline, gasoline-type
lantern fuel, kerosene, charcoal lighter fluid, or similar
liquids to start or "freshen-up" the fire. Always keep
such liquids away from the heater at all times.
NOTE: Avoid letting logs rest directly on the glass
panel. The logs should be spaced off of the glass
enough to allow for proper air flow within the firebox.
5.4 Air Flow and Control
Your F 500 is designed to support efficient combustion
transfer by directing air through the stove in two
separate channels; Primary and Secondary. See figure 11.
Primary air is manually regulated by a lever and valve
at the front of the stove. The valve position controls
the volume of primary air entering the firebox and
thereby affects fire intensity, heat output and burn
time. Primary air is directed to the main body of
the fire through air ports at the front of the stove.
Separate manifolds at each side also deliver pre-
heated primary air at top of front plate to create an
'air-wash" to help keep the viewing glass clean.
Secondary air allows combustion of volatile gas
and other by-products of primary combustion that
would otherwise enter the atmosphere unburned.
This unregulated air is preheated as it passes over
the back of the stove and through a stainless steel
manifold at the top of the firebox. This additional
hot oxygen allows any unburned gasses to be burned
inside the stove. The action of secondary combustion
can be readily seen through the viewing glass a slow,
rolling flames suspended over the main fuel bed and
smaller jets of flame extending from the secondary
manifold ports. At the same time, no smoke will be
observed exiting the chimney. This is evidence that
the stove is operating at the so-called "sweet-spot"
wherein optimum efficiency is realized.
When first starting or reviving the fire: the primary
control lever should be set to the far right position,
which permits the maximum amount of air into the
stove. The greater the amount of air entering the
stove, the hotter and faster the fire will burn. Moving
the lever to the left reduces the airflow into the stove
which prolongs the fire at a lower heat output. See
figure 11.
Use a Stove-top Thermometer
Determining the primary air setting for the best
overall performance for your particular needs and
installation will be established over time through trial
and heat
and error. Each installation has unique characteristics
that will affect stove performance. You should use
a stove-top thermometer to monitor the status
of the fire. Place the thermometer on the stove
top, centered two one side or the other. See fig. 12.
Generally speaking, once the stove temperature has
reached 400°F - 600°F, the air control may be set in
a mid-range position to allow adequate oxygen to
support efficient combustion throughout the burn
cycle.
5.5 Break-In Procedure
The Jøtul F 500 is constructed of cast iron and stove
furnace cement. Cast iron, while very durable,
expands and contracts as it is heated and cooled.
This type of construction requires the stove to be
"broken-in" gradually so that thermal expansion does
not occur too quickly. The following steps describe
the proper break-in procedure for the Jøtul F 500 CB:
1. Light a small fire of newspaper and kindling.
Only allow the stove to reach a maximum
surface temperature of 200°F (93° C). Burn for
approximately 1 hour.
2. Allow the stove to cool to room temperature.
3. Light a second fire, allowing the stove to reach a
maximum temperature of 300°F (149°C) for 1 hour.
4. Cool the stove to room temperature.
5. Light a third fire and gradually allow the stove to
reach a surface temperature of 400°F (204°C).
6. Cool stove to room temperature. This completes
the "break-in" procedure.
139681_R06 F 500 Oslo 1/20
9
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