HEI150 Wood Insert Fireplace Installation and Operation Manual
32
Data for Floor Protection Calculation level with the hearth extension of the masonry
fireplace with R factor equal to or greater than 2
MINIMUM
EXTENDED
A
B
C
D
E
AIR
JACKET
INCHES
Dimension of
the hearth
extension
CAN/USA: 22"
0"
D = B - (A - C)
12 1/8"
Flush with
fireplace
facing
MILLIMETRES
CAN/USA:
559 mm
0 mm
D = B - (A - C)
308 mm