Venting Chart - Valor H6 Installation Manual

Venting
How to Read the Venting Chart
The chart below applies to co-axial roof or wall
termination.
1. Minimum 24 inches vertical rise in venting
system at the unit or after fi rst elbow.
2. The total length of the vent pipe cannot
exceed 40 feet.
3. The minimum vertical height with roof
termination is 6 feet.
4. Any combination of rise and run can be
used as long as they are within the allowable
limits shown on the chart below.
5. A maximum of 4 x 90 degrees elbows—or
equivalent (2 x 45 degrees = 90 degrees)—
can be used.
6. Each 90 degrees elbow installed on the
horizontal plane is equivalent to a 3 feet
horizontal pipe; therefore, 3 feet must be
subtracted from allowable horizontal run.
(45 degrees elbow is equivalent to 18 inches
horizontal pipe.)
7. All horizontal pipe runs must be graded
1/4 inch per foot upwards in the direction
of the exhaust fl ow. The fi nal pipe length,
when terminating through the wall may be
graded downwards slightly to prevent water
migration.
8. A restrictor adjustment is required for most
installations having a vertical rise—see next
section.
Note: The restrictors are shipped loose with
the appliance.
30
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
No restrictor
2
below 4'–0"
0
24" minimum
vertical pipe rise

Venting Chart

Allowable Co-Axial Vent Confi gurations
with restrictor positions
Position #4
Position #3
Example 1
2 4 6 8
HORIZONTAL RUN (ft)
Example 1
V Value = V1 (3') + V2 (2') + V3 (1')= 6'
H Value = H1 (3') + H2 (2') = 5'
Restrictor position #1 required
Venting Chart
NO INSTALLATION
Position #2
Position #1
NO INSTALLATION
10 12 14 16 18 20