Vermont Casting SNV30 - Manual (Page 7)

7
Stardance Natural Vent Gas Heater
20007067
Passing Through a
Combustible Wall or Ceiling
An approved pass-through device is always required
when a vent passes through a combustible wall or ceil-
ing. Check with the maker of the vent system for the
correct listed devices that are available. A listed pass-
through device is required whether or not the installa-
tion includes decorative pipe around the Type B venting
system. NOTE: It is essential to seal between the ceil-
ing support (sometimes called a ‘firestop spacer’) and
the decorative pipe, if installed, with a high-temperature
silicone sealant. (Fig. 6)
Complete the venting system installation according to
the manufacturer’s instructions.
ST361
Ceiling pass thru
5/11/00 djt
Joists
Ceiling
Support
Trim Col-
lar
Air Space
Listed 4”
(102 mm)
B-Vent
Decorative
6” Pipe
High-tempera-
ture Silicone
Sealant
Air Space as Re-
quired by Code
ST361
Fig. 6 A ceiling pass-through, with decorative pipe around the
vent.
High-tem-
perature
Silicone
Sealant
Fig. 7 Vent termination window.
Venting Requirements
FP567
NVBR/NVBC VENTING RUNS
11/12/97
Venting Runs
A: Vertical installations up to 36 feet (12m) in
height. Up to an 18 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 36 feet (12m) in
height. Up to a 24 ft. horizontal vent run can be
installed within the vent system using a
maximum of two 45-degree elbows.
(Ratio = 2/3, Hor./Vert.)
= Acceptable venting configuration
= Unacceptable venting configuration
NOTE: When venting staight vertical, without an
elbow, a minimum of 8 ft. vertical is required
off the top of the stove.
Horizontal Run (in feet)
Vertical Run (in feet)
(Measured from top of the unit before any elbow
)
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
1 2 4 6 8 10 12 14 16 18 20 22 24
A
B
FP567b