Venting Runs - Majestic NVC36 Installation And Homeowners Operating Instructions

Attic Installation
Firestop position when area above ceiling is an attic.
Ceiling Installation
Firestop position when area above ceiling is NOT an attic.
Fig. 9 Firestop/draftstop positions.
FP384
FIRESTOP
11/21/96
adapted from IGF53
20000194
Nails (4)
Firestop
Spacer
Joist
(Firestop/draftstop
appearances may
vary. Only 1 firestop
required per frame.)
FP384

Venting Runs

Horizontal Run (in feet)
3 4 5 6 7
40
38
A
36
B
34
32
30
28
26
24
22
20
18
16
14
12
= Acceptable venting configuration
= Unacceptable venting configuration
A: Vertical installations up to 40 feet (12m) in
height. Up to a 8 ft. horizontal vent run can be
installed within the vent system using a
maximum of two 90-degree elbows or four
45-degree elbows.
B: Vertical installations up to 40 feet (12m) in
height. Up to a 12 ft. horizontal vent run can be
installed within the vent system using a
maximum of two 45-degree elbows.
Table 1 Venting configurations.
FP567a
NVBR/NVBC VENTING RUNS
11/12/97
NVC Series B-Vent
8 9 10 11 12
FP567a
9