Disposal Of Ashes - Newmac NS220E Installation, Operating And Service Manual

DISPOSAL OF ASHES

1. Do not allow ashes to build up inside of firebox. This will reduce necessary air for proper combustion - keep ashes
away from primary air intakes.
2. To clean ashes out of firebox push coals to back of stove and lift cleanout plate located behind the first brick.
Scrape ashes forward and down opening into the ash pan below. Empty ash pan as required.
3. Ashes should be placed in a metal container with a tight fitting lid. The closed container of ashes should be placed
on a non-combustible floor or on the ground, well away from all combustible materials pending final disposal.
4. If the ashes are disposed of by burial in soil or otherwise locally dispersed, they should be retained in a closed
container until all ashes have thoroughly cooled.
OPERATING HINTS
A Heater puffs and fills room with smoke:
1. Check that sufficient outside combustion air is available to the heater.
2. Check for air leaks in chimney connector. It is of utmost importance that installations are made airtight. This is
best accomplished by using furnace cement at each pipe joint and where the elbow of first joint of pipe enters
the chimney flue.
3. Check for air leaks in chimney. Any air leaks existing between the top of the chimney vent and the heater may
cause back-puffing. Here is the reason: NEWMAC wood-fired heaters are designed to operate on an airtight
principle, when the combustion air damper has closed, which it does intermittently because it is controlled by
the bimetal thermostat, the heater has to breathe throughout the hole in this damper plate. Therefore any air
leaks existing, as mentioned above will cause the draft to draw at points where least resistance is offered, such
as at pipe joints, where pipe enters chimney flue, around loose flue thimble, other flue openings into chimney
around clean-out doors permitting air to seep into chimney. When this takes place, the gases and smoke are
not drawn off the heater in proper quantity, causing them to build up in volume within the heater, which results
in back-puffing. All such leaks must be sealed off airtight! In other words, the entire chimney pull or draft must
be on the damper entrance only.
4. Check for chimney connector or chimney clogged with bird nests, loose brick, creosote, etc.
B Heater burns too much fuel:
1. Check air leaks around loading door. NOTE: Never operate with loading door or ash door open.
2. Check for air leaks around flue collar and firebox.
3. Check loading door and ash door gaskets.
BACK-DRAFT
There are two main causes of chimney downdraft. One readily recognized is air currents being deflected down the
chimney by nearby higher objects, such as a tree, building or a hill.
The other cause, equally or more common, but seldom understood or recognized, is that in many chimneys the flue
gases are chilled too quickly as they pass up the chimney. The temperature of the flue gases drop, they become heavy,
and then other gases from the wood fire have to push a heavy column of air ahead of them in order to escape up the
chimney. This often results in back-puffing or backpressure, odors in the house, or poor combustion, which can be
annoying. Remember, the hotter the air in the flue, the stronger the draft. Any air entering the chimney, which has not
passed through a hot fire will cool the air in the flue and spoil the draft and aid in the formation of creosote.
BACK-PUFF
Back-puff is the sudden ignition of gases within the heater, which happens when air is suddenly admitted. This is
because the combustion rate in an airtight heater is air Iimited. Air for combustion is regulated by the primary air
manifold and the thermostat.
If air is suddenly admitted to the firebox by opening the loading door, air will rush in and the gases will ignite. The
combustion surge of the gases is so quick that the resulting pressure can force the hot gases out any available opening
such as the loading door. Therefore, be cautious! Open any door or opening on an airtight heater very slowly and only
then after being certain the thermostat door on the heater is open.
The possibility of back-puffing is one reason that children or anyone who is unfamiliar with the heater should be
cautioned about touching the heater.
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