Vent Information And Diagrams; Approved Pipe; Vent Table Key; Use Of Elbows - Heatilator Direct Vent Gas Appliance CD4236MILR Owner's Manual

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Vent Information and Diagrams

A. Approved Pipe
This appliance is approved for use with Hearth & Home
Technologies DVP and/or SLP venting systems. Refer to
Section 16.B. for vent component information.
DO NOT mix pipe, fi ttings or joining methods from differ-
ent manufacturers.
The pipe is tested to be run inside an enclosed wall.
There is no requirement for inspection openings at each
joint within the wall.
WARNING! Risk of Fire or Asphyxiation. This appliance
requires a separate vent. DO NOT vent to a pipe serving a
separate solid fuel burning appliance.
B. Vent Table Key
The abbreviations listed in this vent table key are used in
the vent diagrams.
Symbol
V
First section (closest to appliance) of vertical length
1
V
Second section of vertical length
2
H
First section (closest to appliance) of horizontal length
1
H
Subsequent sections of horizontal length
2
C. Use of Elbows
Diagonal runs have both vertical and horizontal vent aspects
when calculating the effects. Use the rise for the vertical
aspect and the run for the horizontal aspect (see Figure
7.1).
Two 45º elbows may be used in place of one 90º elbow.
On 45º runs, one foot of diagonal is equal to 8-1/2 in. (216
mm) horizontal run and 8-1/2 in. (216 mm) vertical run. A
length of straight pipe is allowed between two 45º elbows
(see Figure 7.1).
D. Measuring Standards
Vertical and horizontal measurements listed in the vent
diagrams were made using the following standards.
• Pipe measurements are shown using the effective length
of pipe (see Figure 7.2).
• Horizontal terminations are measured to the outside
mounting surface (fl ange of termination cap).
• Vertical terminations are measured to bottom of
termination cap.
• Horizontal pipe installed level with no rise.
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Description
Heatilator • Caliber Mesh CD Series-SIT Valve • 4040-849 Rev J • 06/08
Vertical
On 45° runs, 1 ft (.3 m) of diagonal is equal to 8-1/2 in. (216
mm) horizontal run and 8-1/2 in. (216 mm) vertical run.
Figure 7.1 Using Two 45° Elbows
Effective
Height/Length
DVP Pipe
(see chart)
Effective
Height/Length
SLP Pipe
(see chart)
Figure 7.2 Pipe Effective Length
8-1/2 in.
Horizontal
Effective Height/Length
Pipe mm
inches
DVP4 4 102
DVP6 6 152
DVP12 12 305
DVP24 24 610
DVP36 36 914
DVP48 48 1219
DVP6A 3 - 6 76 - 152
DVP12A 3 - 12 76 - 305
Effective Height/Length
Pipe mm
inches
SLP4 4 102
SLP6 6 152
SLP12 12 305
SLP24 24 610
SLP36 36 914
SLP48 48 1219
SLP6A 2 - 6 51 - 152
SLP12A 2 - 12 51 - 305