Heatilator BIR42 Owner's Manual page 35

Remove 2 screws
from front & back
to lift the top off
Termination Cap
Collar
2 in. (51 mm)
Minimum Height
Chase Top
Chimney
Pipe
Termination cap pipe and chimney section must overlap
1-1/2 in. (38 mm)
Place waterproof sealer
under each flange of the
termination cap and on
top of each screw to
help prevent leaks.
The last section of pipe
must stop between 2 in.
(51 mm) above top of
chase and 7 in. (178 mm)
below top of chase
2 in. (51 mm)
7 in. (178 mm)
Chase