Lennox Hearth 1900HT-M ユーザーズマニュアル

 

PAGE 16 

HOW TO START AND MAINTAIN A FIRE 
1.  Open the primary air control by pulling the handle out 

ward to the full open position. This allows the firebox 
and fresh fuel to quickly come up to ideal operating 
temperature. 

2.  Build your fire directly on the firebrick covering the 

bottom of the stove.  
a. 

Place five or six loosely crumpled sheets of 
newspaper in the stove. 

b. 

Add a small amount of dry kindling randomly 
on the top of the newspaper. 

c. 

Place a few more loosely crumpled newspa-
pers on top of the kindling and light the bottom 
paper first, then light the top paper. Once the 
fire is well underway, close the fuel door. The 
upper fire should preheat the chimney and cre-
ate an effective draft while the lower fire ignites 
the kindling. 

3.  After the kindling is burning well, add increasingly 

larger pieces of wood until the fire is actively burning. 

4.  Once a bed of coals has been established, adjust the 

primary air control to a lower setting by pushing the 
air control rod all the way in (closed) and then pulling 
the rod out incrementally to the desired setting. Tips - 
Adjust the primary air control to a medium to low set-
ting for a slow and more efficient burn. On higher set-
tings, it is more efficient to burn with a bright but not 
roaring fire. 

 
REFUELING 
To refuel the stove, first move the primary air control to 
high (pulled out). Let the fire "liven up" for about one min-
ute. Open the fuel door about 1/2" and hold in this posi-
tion about 30 seconds or until stove is drafting well.  
Open the door and add wood. If the fire or coal bed is 
almost depleted and a full load of cord wood is added, it 
may be necessary to adjust the primary air control wide 
open to re-establish a lively fire. The use of start-up air 
should only be used for a short period of time. 
 
NOTE:  After refueling and the wood is burning at a brisk 
rate, reset the primary air control to the desired position 
by pushing the primary air control rod all the way in and 
then pull it back out to the desired setting. 

BURN RECOMMENDED FUEL 

This appliance is approved for use with untreated natural 

dry wood only (see Important Warnings, page 2, No. 8).  

Do not burn particleboard scraps or pressed logs using 

bonding agents because they can produce conditions 

which will deteriorate metal. Green or uncured wood 

does not work well as fuel, and can cause increased 

creosote buildups. The value of green wood as a source 

of heat is limited. Do not overload or use kindling wood 

or mill ends as primary fuel as this may cause overfiring. 

Overfiring is a condition where excessive temperatures 

are reached, beyond the design capabilities of the stove. 

The damage that occurs from overfiring is not covered un-

der the stove warranty. 

 

The key to the success of a good fire that produces heat 

from a woodstove is the wood. It needs to be well-

seasoned natural wood. 

 

What does “Well-Seasoned” mean? 

 

When a tree is cut down, the wood is green, full of sap and 

moisture. This moisture content can exceed 80%, which 

must be reduced to less than 20%. Wood properly sea-

soned is then capable of generating the heat the stove was 

designed to provide. 

 

Green wood does not burn easily.  Attempting to burn 

green wood often results in a lot of smoke and very little 

fire. Time is the most important factor in seasoning wood.  

Ideally the moisture content should be reduced to 11-20%, 

although very few of us will be able to check that figure.  

There are several steps that should be taken to ensure that 

that you come close to these figures. 

 

Softwoods – 6 months to 18 months 

Hardwoods – 12 months to 24 months 

 

Logs that are 5” diameter across or larger should be split in 

half, three pieces if over 8 inches, and four pieces when 

over a foot across.  If the tree fell 2 to 4 years ago, it still 

needs to be cut, split, and seasoned for 6 to 24 months 

depending on the wood. 

Wood to be seasoned should be stacked in an area open 

enough to ensure good air circulation on both sides – leav-

ing adequate space between woodpiles to walk comfort-

able.  Do not stack wood against a wall or building.  It helps 

to elevate the woodpiles off the ground (two 2 x 4’s running 

lengthwise beneath the woodpile works well). This allows 

air to flow under the bottom logs. 

 

Wood that is kept outdoors, either covered with a tarp, or 

not covered at all, will not burn well until it has been in an 

enclose space for one to two months.