HearthStone Quality Home Heating Products Inc
Tucson
Model #8700
15
Figure 6: Mantle Clearance To Combustibles
Figure 7: Wall Clearance To Combustibles
Venting
Normally Aspirating Chimneys
The Tucson is a highly efficient gas heater.
With operating efficiency as high as
82%,
most heat output is retained within the living
space, with minimal heat leaving the room
via the chimney. However, some heat is
required in all chimneys in order to establish
and maintain a draft. Since most of the heat
is retained in the living space with minimal
heat entering the chimney, it is imperative
that the chimney/venting system be properly
sized and installed in order to establish and
maintain the draft required for the unit to
function.
The Tucson must be properly connected to a
4" (102 mm) diameter type B-1 vent which
is constructed and installed in accordance
with NFPA54 and NFPA211. Single wall
vent pipe may be used within the same room
as the Tucson so long as adequate (6" or 152
mm) clearance is maintained from the single
wall pipe to combustible surfaces. The
single wall vent pipe
must
connect to
double-wall type B-1 vent from thereon.
The minimum clearance from type B-1 vent
to combustibles is 1"(25 mm).
Connect the single wall or B-1 vent pipe to
the flue collar located on the rear surface of
the unit using 3 sheet metal screws. For
wall, roof or partition penetration, refer to
the current edition of ANSI Z223.1 or
CAN1-B149 for instructions and clearances
to combustibles. The Tucson can be
connected to an existing, properly
constructed masonry or prefabricated
chimney so long as the type B-1 vent is
extended through the entire length of the
chimney. An annual inspection is required to
