' 6HFXUH 2 VHW5HWXUQ
:KHQ R VHWV DQG UHWXUQV DUH MRLQHG WR VWUDLJKW SLSH VHF-
WLRQV WKH\ PXVW EH ORFNHG LQWR SRVLWLRQ ZLWK WKH VFUHZV
RXWHU RQO\ 7R SUHYHQW JUDYLW\ IURP SXOOLQJ WKH FKLPQH\
VHFWLRQV DSDUW WKH UHWXUQV DQG WKH FKLPQH\ VWDELOL]HUV
KDYH KDQJHU VWUDSV IRU VHFXULQJ WKHVH SDUWV WR MRLVWV RU
UDIWHUV 6HH )LJXUH
8VH
RU
VKHHW PHWDO VFUHZ RU ODUJHU QR ORQJHU
WKDQ LQ PP
WARNING! Risk of Fire!
6HFXUH R VHWV ZLWK VFUHZV QRW WR H[FHHG LQ PP
In length).
•
Secure returns with strapping.
•
Straight chimney sections may be secured with screws
(not to exceed 1/2 in./13 mm In length) at the joints.
•
Keep chimney sections from separating or twisting.
Straps
Optional
Additional
Support
Figure 5.4
Secure the Chimney
E. Install Ceiling Firestops
CAUTION! Risk of Fire!
ZKHQHYHU WKH FKLPQH\ SHQHWUDWHV D FHLOLQJÀRRU
&KDVH FRQVWUXFWLRQ UHTXLUHV FHLOLQJ ¿UHVWRSV DW HDFK
ÀRRU RU HYHU\ IW P RI FOHDU VSDFH
7KH FHLOLQJ ¿UHVWRS VORZV VSUHDG RI ¿UH DQG UHGXFHV
FROG DLU LQ¿OWUDWLRQ
,QVWDOO D FHLOLQJ ¿UHVWRS ZKHQHYHU FKLPQH\ SHQHWUDWHV
FHLOLQJÀRRU
0DUN DQG FXW DQ RSHQLQJ LQ FHLOLQJ DV VKRZQ LQ )LJXUH
)UDPH WKH RSHQLQJ ZLWK WKH VDPH VL]H OXPEHU XVHG LQ
WKH FHLOLQJ MRLVWV
1DLO WKH FHLOLQJ ¿UHVWRS WR WKH ERWWRP RI WKH FHLOLQJ MRLVWV
ZKHQ WKHUH LV D URRP DERYH
8VH DQ DWWLF LQVXODWLRQ VKLHOG LI WKH FHLOLQJ LV LQVXODWHG
7KH FHLOLQJ ¿UHVWRS PD\ WKHQ EH DWWDFKHG DERYH RU EHORZ
the joists.
Ceiling
Firestop
Joint
Band
(Optional)
&HLOLQJ ¿UHVWRSV PXVW EH XVHG
Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev AB • 06/23
ROOM ABOVE (non-insulated ceiling)
B
Ceiling firestop
attached to bottom
of framing
ATTIC ABOVE (insulated ceiling)
Ceiling firestop
attached to top of
framing
2 in. (51mm)
clearance
Note:
Use same dimensional lumber for framing
ceiling firestop and joists.
Catalog #
in.
)6
)6
Figure 5.5
Installing the Ceiling Firestop
WARNING! Risk of Fire! DO NOT seal area between
¿UHVWRS RSHQLQJ DQG FKLPQH\ SLSH H[FHSW ZKHUH WKH\ HQ-
ter the attic or leave the warm air envelope of the home
(use 600° F sealant).
A
2 in. (51mm)
clearance
A
B
mm
in.
mm
21