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Heatilator • RAVE32-IFT-B, RAVE36-IFT-B, RAVE42-IFT-B Installation Manual • 2619-983 Rev. U • 9/22
Measuring Standards:
Vertical and horizontal measurements listed in the vent
diagrams and clearances for termination were made
using the following standards:
• Pipe measurements are shown using the effective length
of pipe. See Section 12.A (Figure 12.1) for information
on effective length of pipe components.
• Horizontal terminations are measured to the outside
mounting surface (flange of termination cap)
.
S
ee
Figure 4.8
.
• Vertical terminations are measured to top of last section
of pipe. See Figure 4.9.
• Horizontal pipe installed level with no rise.
Figure 4.8 Measure to Outside Mounting Surface
Figure 4.9 Measure to Top of Last Section of Pipe
E. Use of Flex Vent (SLP-FLEX Series 6-5/8
Inch)
The flex vent must be supported with the spacing between
support intervals not exceeding 4 feet, with no more than
1/2 inch sag between supports.
A support is required at each change in venting direc
-
tion, and in any location where it is necessary to maintain
the necessary clearance to combustibles. A simple “up
and out” installation (Figure 4.10) requires only enough
support to maintain the necessary clearance to combusti
-
bles. However, the vent attachment point and the firestop
location are considered to be supports.
Figure 4.10 Flex Vent Pipe - Generic Fireplace Shown
3 in. CLEARANCE
TERMINATION
CAP
FLEX-VENT
1 in.
CLEARANCE
MEASURE TO SHADED SURFACE
(OUTSIDE MOUNTING SURFACE)
