Harman Stove Company XXV Installation & Operating Manual page 12

Fig. 16
" min.
" min.
PL vent manufacturer's
f i r e s t o p s p a c e r a n d
support
1
XXV Pellet Stove
Venting
Storm collar
Flashing
" min.
No insulation or
other combustible
m a t e r i a l s a r e
allowed within 3" of
the PL vent pipe.
" min.
Fig. 17
#7 installing into an existing chimney
using 3" pellet vent in combination
with 6" or 8" single or double wall
stove pipe.
This method allows the installer to use 6" or 8"
single and double wall stove pipe ( sealed seam not
snap lock ) and
an existing masonry or class A chimney to vent the
stove.
The stove must use pellet vent and 90 degree
elbow to start at the stove connector and then use
the approved pipe adapter to connect to the size
of vent that continues into the chimney connector.
Support of the assembly must follow any pipe and
connector manufacturers recommendations.
Due to combustible fuel, vent pipe to hopper
clearances must meet guidelines stated by NFPA
or local codes.
#8 installing through the ceiling
Through the ceiling vent, follow vent manufacturers
recommendations when using a wall or ceiling pass
through. note: do not place joints within wall
pass-throughs.