Clearances To Combustibles - Hearth and Home Technologies Expedition-I Manual

B. Clearances to Combustibles
In Canada a full length 6 inch (152mm) S635 flue liner
required as per ULC S628.
In USA a minimum 5 ft length (1.82m), 6 inch (152mm)
diameter flue liner is required as per UL 1482.
TOP TRIM (3/4" max depth)
24-1/4 in
(616mm)
HEARTH EXTENSION
(MINIMUM EMBER PROTECTION)
CANADA 46-1/4
Figure 10.1
NOTE: If trim measurement is over 3/4 in (19mm) in
depth use mantle or side clearances to combustibles.
MANTEL
(12" max depth)
47-3/4 in 47-3/4 in
(1213mm) (1213mm)
40-3/4 in 40-3/4 in
(1035mm) (1035mm)
Figure 10.2
To calculate mantel height requirement, multiply the
depth of the mantel by 0.78 inches then add 38.375
inches to the total.
10
23-3/4 in
(603mm)
USA 38-1/4
(1175mm)
3 in 3 in
(76mm) (76mm)
USA 17-1/2
CANADA 19-1/2
(495mm)
HEARTH EXTENSION
(EMBER PROTECTION)
United States and Canada (UL and ULC)
Figure 10.3
34-3/4 in
Minimum Opening Dimensions Inches Millimeters
(883mm)
A
Height
Front Width (Steel Surround)
B
Front Width (Cast Surround)
C
Back Width
Depth (Steel Surround)
D
Depth (Cast Surround)
Table 10.1
NOTE: Minimum opening dimensions include a 1/4 inch
(6mm) clearance around unit.
NOTE: Keep Ashlip
Clear of Ashes
Figure 10.4
NOTE: Clearances may only be reduced by means
approved by the regulatory authority having jurisdiction
Fire Risk.
• Comply with all minimum clearances to
• Failure to comply may cause house fire.
7094-802A
A
D
C
B
19-1/4
27
27
24-1/2
16
15-1/4
WARNING
combustibles as specified.
489
686
686
622
406
387
04/21