Desa VPN36 3-SIDED Minimum Chimney Height, Maximum Chimney Height, Chimney Maintenance

VRTL-10D		VRTL-10D	VETL-10D
VSC-10
FLASHING
	MINIMUM
VFS-10DM	HEIGHT
	15 FT.
			MAXIMUM
			HEIGHT
			CHASE
			TERMINATION
			50 FT.
		VFS-10DM
		V30FS-10DM
	V30E-10DM
Figure 23

MINIMUM CHIMNEY HEIGHT

The minimum chimney height (measured from bottom of firebox to flue gas outlet-end of pipe) is 15 feet for a straight run, 16 feet min. for a run with 1 elbow set (a set consists of one starter elbow and one return elbow).

Uncommon circumstances such as neighboring hills, tall trees, or strong wind areas can cause downdrafts in the chimney system. In such cases going beyond the minimum recommended height would be preferable to provide a better draw.

MAXIMUM CHIMNEY HEIGHT

The maximum height approved for any chimney run with this firebox system is 50 feet measured from bottom of firebox to flue outlet-end of pipe.

CHIMNEY MAINTENANCE

Have your chimney system cleaned and inspected regularly to ensure safe and efficient operation. Refer to your Owner's Manual for further guidelines on maintenance and operation.

Using Figure 24 and the chart below, determine the opening that will be required for the pitch of your particular roof.

19" MIN.
(482.6mm)
2" MIN.	30" MIN.
(50.8mm)
	(762mm)
	2" MIN.
	(50.8mm)
2" MIN.
(50.8mm)
	OPENING
	"A"
Figure 24

ROOF OPENING CHART

PITCH	OPENING "A"	USE FLASHING NO.
FLAT	19	V6F10
6/12	23 1/4	V6F10
(26.6 DEG. SLOPE)
12/12	30 3/4	V12F10
(45 DEG. SLOPE)

Before cutting hole, temporarily remove shingles around area to be opened. After preparing the opening on the roof, continue to add sections of pipe until it extends a minimum of 30 inches above highest point of roof cutout (see Figure 24).

With the termination the minimum height should add up 3 feet (see 10-Foot Rule and Figure 22).

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