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Venting runs – Vermont Casting NVC43 User Manual

Page 9

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9

NVC Series B-Vent

20000194

Fig. 9 Firestop/draftstop positions.

Ceiling Installation

FP384

FIRESTOP

11/21/96

adapted from IGF53

Attic Installation

Firestop position when area above ceiling is an attic.

Firestop position when area above ceiling is NOT an attic.

(Firestop/draftstop

appearances may

vary. Only 1 firestop

required per frame.)

Firestop

Spacer

Nails (4)

Joist

FP384

Table 1 Venting configurations.

FP567a
NVBR/NVBC VENTING RUNS
11/12/97

Venting Runs

40
38
36
34
32
30
28
26
24
22
20
18
16
14
12

8 9 10 11 12

3 4 5 6 7

Horizontal Run (in feet)

Ve

rtical Run (in feet)

(Measured from floor of unit tocenter of hor

izontal v

ent pipe

.)

A

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.

B

= Acceptable venting configuration
= Unacceptable venting configuration

FP567a