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Section 3-3-1: Venting Layout
DRSQ34 4/7 TOP Venting -
Wall and roof termination
Maximum total vent run allowed is 34 ft. (V+H ≤ 34ft.)
For longer vent runs, a power vent is required
V + H are measured from the center of vent elbows
Elbow may be attached directly to the top of the unit.
Maximum vertical run allowed is 32 ft. (V max).
Maximum horizontal run allowed is 25 ft. (H max).
Elbows:
Two 45° elbows = 90° elbow
Each elbow reduces vent run by 3'
Max elbows = 4
34'
32'
34' ok for straight
vertical runs
30'
28'
26'
24'
22'
20'
18'
16'
14'
12'
10'
Acceptable
vent run within
8'
shaded areas.
6'
4'
2'
4"
2'
4'
6'
8'
10'
2
Horizontal Run (Ft.) "H"
16"
16" min. horiz for
wall term
*4" vertical minimum is based on the vent center of an elbow mounted
directly on the top of the unit.
18
V MIN.
H MAX.
4"*
28"
1'
6'
2'
12'
3'
20'
4'
25'
10'-34'
SEE GRAPH
12'
14'
16'
18'
20'
22'
24'
Installation
DRSQ
34
XG0230 - 052020
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