Desa VPN36 3-SIDED - Manual (Page 10)

10 55505
Figure 23
VRTL-10D
VSC-10
FLASHING
VFS-10DM
VFS-10DM
V30FS-10DM
V30E-10DM
MINIMUM
HEIGHT
15 FT.
MAXIMUM
HEIGHT
CHASE
TERMINATION
50 FT.
VRTL-10D
VETL-10D
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.
Figure 24
19" MIN.
(482.6mm)
2" MIN.
(50.8mm)
2" MIN.
(50.8mm)
2" MIN.
(50.8mm)
30" MIN.
(762mm)
OPENING
"A"
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).