F 45 V2 Functionality; Air Control / Blower Settings; Controling The Fire - Jøtul Greenville F 45 V2 Installation And Operating Instructions Manual

5.4 How Your Jøtul F 45 V2 Works
When used with dry wood and a well-drafting chimney
system, modern non-catalytic wood stoves burn fuel
efficiently by the precise control and delivery of primary and
secondary air to the fire.
Primary Air is drawn into a front inlet in the stove
bottom and directed through a regulator shutter under
the front door before entering the lower fire chamber.
Additional primary air is directed to the top of the load door
to act as an air wash to help prevent extreme soot build-up
on the glass panel. The amount of primary air available to
the fire determines the intensity of heat output and rate of
fuel combustion; the greater the amount of air, the greater
the heat output, the faster the wood burns. The primary air
setting also determines the effectiveness of the air wash over
the glass; the higher the setting, the cleaner the glass.
Additional air is separately directed into the top of the
fire chamber to support combustion of exhaust gasses
before passing out of the stove. This unregulated Secondary
Air enters through an inlet in the rear of the stove bottom
and is heated as it passes through the rear of the stove
into a two-tiered manifold at the top of the firechamber.
Additional secondary air is directed through a stainless steel
baffle plate.
Volatile gases, released unburned from the fuel bed,
rise to the baffle where they are turbulently mixed with the
hot, fresh oxygen. Secondary combustion then occurs before
the gases pass into the heat exchange chamber. The action
of secondary combustion can be readily seen through the
viewing glass as slow, rolling flames suspended over the
main fuel bed and smaller jets of flame extending from
the baffle 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 and lowest particulate emissions are
realized. See fig. 15.
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 and experience. Each installation
has unique characteristics that 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 to one side or the other. Generally speaking, once
the stove temperature has reached 400°F - 600°F (204°C
-316°C), the air control may be set in a mid-range position
to allow adequate oxygen to support efficient combustion
throughout the burn cycle.
You can also monitor stove performance through the
window. Peak combustion efficiency occurs when exhaust
gas is burned at the baffle in the top of the firebox. This is
apparent as rolling yellow-orange flames appearing at the
secondary air ports in the underside of the baffle plate and
forward tube. At this stage, little or no smoke will be visible
exiting the chimney.
FLOW DIAGRAM
SECTION A-A
Figure 15. Combustion air paths
AIR/EXHAUST FLOW VIEW, JØTUL F 45 V2 DWG. 351435E

5.5 Air Control / Blower Settings

Use the following guide for best performance.
Burn Rate Air Control Setting
Low Fully Closed
Medium 1/8" Open
High Fully Open
1/2"
1/8"
Figure 16. Air Control Settings
5.6 Controlling the Fire
Combustion intensity is controlled by the position of an air
shutter located under the front door. You adjust its position
using the handle located under the ash lip. Slide the handle
to the left to decrease air to the fire. Sliding it to the right
increases air delivery and consequently, fire intensity. See
fig. 16. The shutter regulates and directs primary air to the
front of the burn chamber. Push it to the right to allow
maximum air to support combustion. It should be fully
open when first starting or rekindling a fire, or when greater
heat output is desired.
139967 F 45 V2 3/20
EXHAUST
PRIMARY
SECONDARY
Blower Speed
Low / On auto
Low / On auto
High / On auto
15