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6.
Set thermostat to maintain desired temperature in room. Medium setting is normally satisfactory. Set high or lower
for maximum comfort.
CAUTION: Do not operate this heater with the loading door (or ash door if fitted) open. This heater is designed for
thermostatic operation. Continuous operation with a door open will over heat the unit.
REFUELING
CAUTION: Read the section on back-puffing before refueling heater.
The loading door should be closed at all times except when refueling. If the door is allowed to remain open, the
thermostat will not function, as it should. Before opening the loading door, make sure the thermostat is open. Allow the
fire to burn rather briskly for a few minutes. Then open the loading door slowly.
By allowing the fire to increase for a short period, a high draft condition has eliminated smoke in the firebox and the
temperature has been raised which prevents a back or down draft.
After refueling, set thermostat at the normal operating setting.
DISPOSAL OF ASHES
1.
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.
2.
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.
3.
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.
4.
NC100 (Newmac Classic) and NCM120 (Newmac Classic II, Mobile) – Keep the ash pit section free of excess
ashes. Failure to do so will cause grate warpage and burn out. Cast iron parts must be "seasoned" to avoid
cracking. Build only small fires during your early use.
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 open.
2.
Check for air leaks around flue collar and firebox.
10
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