Service Hints
Do not expect a furnace to draw. It is the chimney that creates the draft. Smoke spillage into the house or excessive
1.The connector pipe may be pushed into the chimney too far, stopping the draft (Fig. 6)
2.Do not connect two furnaces or a stove and furnace into the same chimney flue.
3.The chimney used for a furnace must not be used to ventilate the cellar or basement. If there is a cleanout opening at the base of the chimney, it must be closed tightly.
4.If the chimney is operating too cool, water will condense in the chimney and run back into the furnace. Creosote formation will be rapid and may block the chimney. Operate the furnace at a high enough fire to keep the chimney warm, preventing this condensa- tion.
5.If the fire burns well, but sometimes smokes or burns slowly, it may be caused by the chimney top being lower than another part of the house or a nearby tree. The wind blow- ing over a house or a tree, falls on top of the chimney like water over a dam, beating down the smoke. The top of the chimney should be at least 3 feet above the roof and be at least 2 feet higher than any point of the roof within 10 feet (Fig. 5).
6.See page 24 for list of trouble shooting tips.
A draft reading of .05 to .06 w.c. is suggested for proper burning of this unit when using wood or bituminous coal as fuel. When using anthracite coal, this draft reading is a minimum reading.
Chimney Maintenance
Creosote and Soot - Formation and Need for Removal
When wood is burned slowly, it produces tar and other organic vapors, which combine with expelled moisture to form creosote. The creo- sote vapors condense in the relatively cool chimney flue of a
When coal is burned, the products of combus- tion combine with moisture to form a soot resi- due which accumulates on the flue lining. When ignited, this soot makes an extremely hot fire.
The chimney should be inspected at least twice monthly during the heating season to determine if a creosote or soot build up has occurred.
If creosote or soot has accumulated, it should be removed to reduce the risk of a chimney fire.
Chimney fires burn very hot. If the chimney catches fire, immediately call the fire depart- ment, then reduce the fire by closing the inlet air control. Pour a large quantity of coarse salt, baking soda or cool ashes on top of the fire in the firebox.
CAUTION
A chimney fire may cause ignition of wall studs or rafters which you thought were a safe distance from the chimney. If you have a chimney fire, have your chimney inspected by a qualified per- son before using again.
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