Field Controls WML-C, MPL-B manual Common Chimney Problems

Fig. 2: Common Chimney Problems

Table 2: Common Chimney Problems

Refer to Figure 2

Key	Trouble	Diagnostic	Remedy
	Top of chimney		Extend chimney
			above all
	lower than
A		Observation	surrounding
	surrounding
			objects within
	objects
			30 feet.
B	Chimney Cap	Observation	Remove
	or ventilator.
			Make opening
C	Coping restricts	Observation	as large as
	opening.		inside of
			chimney.

	Obstruction in	Can be found	Use weight to
		by light and
	chimney
D		mirror reflecting	break and
		conditions in	dislodge.
		chimney.
			Must be
	Joist protruding	Lowering a light	handled by
E		on an extension	competent
	into chimney.
		cord.	masonry
			contractor.
		Smoke test -	Must be
		build smudge
	Break in	fire blocking off	handled by
F		other opening,	competent
	chimney lining.
		watching for	masonry
		smoke to	contractor.
		escape.
	Collection of		Clean out with
		Lower light on	weighted brush
	soot at narrow
G			or bag of loose
	space in flue	extension cord.
			gravel on end
	opening.
			of line.
		Lower light on	Change to
H	Offset		straight or to
		extension cord.
			long offset.
			The least
			important
	Two or more	Found by	opening must
I	openings to the	inspection from	be closed,
	same chimney.	basement.	using some
			other chimney
			flue.
			Leaks should
	Loose-seated		be eliminated
J	pipe in flue	Smoke test.	by cementing
	opening.		all pipe
			openings.
		Measurement	Length of pipe
		of pipe from	must be
	Smoke pipe	within or	reduced to
K	extends into	observation of	allow end of
	chimney.	pipe by means	pipe to be flush
		of a lowered	with inside of
		light.	tile.
	Failure to
	extend the	By inspection or	Extend partition
L	length of flue
		smoke test.	to floor level.
	partition to the
	floor.
M	Loose-fitted	Smoke test.	Close all leaks
	clean-out door.		with cement.

6 30318 R4 9/9/2005