Drolet HEATMAX II DF01001, Инструкция по установке и эксплуатации

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HeatMax II Furnace Installation and Operation Manual
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8.3.5 Building different fires for different needs
Using the air control is not the only way to match the furnace’s heat output to the heat
demand. Your house will need far less heat in October than in January to be kept at a
comfortable temperature. If you fill the firebox full in fall weather, you will either overheat
the space or turn the furnace down so much that the fire will be smoky and inefficient. Here
are some suggestions for building fires to match different heat demand.
8.3.5.1 Small fires to take the chill off the house
To build a small fire that will produce a low heat output, use small pieces of firewood and
load them crisscross in the firebox. The pieces should be only 3” (76 mm) to 4” (102 mm)
in diameter. After raking the coals, you can lay two pieces parallel to each other corner to
corner in the firebox and lay two more across them in the other direction. Open the air
control fully and only reduce the air after the wood is fully flaming. This kind of fire is good
for mild weather when you are around to tend the furnace and should provide enough heat
for four hours or more. Small fires like this are a good time to use softer wood species so
there will be less chance of overheating the house.
8.3.5.2 Long lasting low output fires
Sometimes you will want to build a fire to last up to eight hours, but don’t need intense
heat. In this case use soft wood species and place the logs compactly in the firebox so the
pieces are packed tightly together. You will need to fire the load hot for long enough to fully
char the log surfaces before you can turn the air down. Make sure the fire is flaming
brightly before leaving the fire to burn.
8.3.5.3 High output fires for cold weather
When the heat demand is high during cold weather, you’ll need a fire that burns steadily
and brightly. This is the time to use your biggest pieces of hardwood fuel if you have it. Put
the biggest pieces at the back of the firebox and place the rest of the pieces compactly. A
densely built fire like this will produce the longest burn your furnace is capable of.
You will need to be cautious when building fires like this because if the air is turned down
too much, the fire could smoulder. Make sure the wood is flaming brightly before leaving
the fire to burn.
8.3.5.4 Maximum burn cycle times
The burn cycle time is the period between loading wood on a coal bed and the
consumption of that wood back to a coal bed of the same size. The flaming phase of the
fire lasts for roughly the first half of the burn cycle and the second half is the coal bed
phase during which there is little or no flame. The length of burn you can expect from your
furnace, including both the flaming and coal bed phases, will be affected by a number of
things, such as:
• firebox size,
•
the amount of wood loaded,
• the species of wood you burn,
• the wood moisture content,
•
the size of the space to be heated,
• the climate zone you live in, and
•
the time of year.
• the time cycle for the thermostat to call
for heat.