MANTLE DEPTH “A”
1”
2”
3”
4”
5”
6”
7”
CLEARANCE FROM BASE OF
HEATER “B
”
37 7/8”
39 7/8”
40 7/8”
42 7/8”
44 7/8”
46 7/8”
48 7/8”
Fig. 1b Clearances to combustible materials in front of enclosure opening - All installations
Fig 1d Combustible material enclosure - For installations
in Canada with unprotected combustible floor
Fig 1c Combustible material enclosure - For installations in
USA with protected combustible floor
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