Secure Offset/Return; Install Ceiling Firestops - Heatilator C40 Installation Manual

D. Secure Offset/Return
en o sets an returns are oine to strai
tions t e ust e lo e into osition it t e s re s
rovi e outer onl usin t e re rille
vent ravit ro ullin t e
returns an t e i ne sta ili ers ave an er stra s or
se urin t ese arts to oists or ra ters
se or 8 s eet
t an 1/2 in 13
WARNING! Risk of Fire!
• Secure offsets with screws (not to exceed 1/2 in./13 mm
In length).
• Secure returns with strapping.
• Straight chimney sections may be secured with screw
(not to exceed 1/2 in./13 mm In length) at the joints.
• Keep chimney sections from separating or twisting.
S t r a p s
O p t io na l
A d d it io na l
S u p p o r t
Figure 6.5 Secure the Chimney
E. Install Ceiling Firestops
CAUTION! Risk of Fire!
whenever the chimney penetrates a ceiling/floor.
• Chase construction requires ceiling firestops at each
floor or every 10 ft. (3.05 m) of clear space.
• The ceiling firestop slows spread of fire and reduces
cold air infiltration.
• Install a eilin resto
eilin / oor
• Mar an ut an o enin in eilin as s o n in i ure
• ra e t e o enin
t e eilin oists
• ail t e eilin resto to t e otto
en t ere is a roo
• se an atti insulation s iel i t e eilin is insulate
e eilin resto
t e oists
28 Heatilator • C40 Constitution • 480-2340 Installation Manual • Rev D • 05/30/13
t i e se -
oles o re-
i ne se tions a art t e
ee i ure
etal s re or lar er no lon er
C e il ing
F ir e s t o p
J o int
B a nd
( O p t io na l )
Ceiling firestops must be used
enever i ne
it t e sa e si e lu
o t e eilin oists
a ove
a t en e atta e a ove or elo
5
C e il ng f ir e s t o p
a t t a c h e d t o b o t t o m
C e il ing f ir e s t o p
a t t a c h e d t o t o p o f
Figure 6.6
WARNING! Risk of Fire! DO NOT seal area between
firestop opening and chimney pipe except where they en-
ter the attic or leave the warm air envelope of the home
(use 600° F sealant).
enetrates
er use in
R O O M A B O V E ( no n- ins u l a t e d c e il ing )
B
o f f r a m ing
2 in. ( 5 1 m m )
c l e a r a nc e
A T T I C A B O V E ( ins u l a t e d c e il ing )
f r a m ing
2 in. ( 5 1 m m )
c l e a r a nc e
N ote:
U s e s a m e d im e ns io na l l u m b e r f o r f r a m ing
c e il ing f ir e s t o p a nd j o is t s .
A
Catalog # in. mm
338 14-1/2 3 8
33 14-1/2 3 8
340 14-1/2 3 8
Installing the Ceiling Firestop
A
B
in. mm
14-1/2 3 8
18-3/8 4
23 584