GP-MSJV-BX-07A
STV-JZ Manual
RD: MAR 2009
RL: 07A - BA
Where the vent pipe passes through areas where
the ambient temperature is likely to produce con-
densation of the flue gases, the vent pipe shall be
insulated with a suitable material as approved and
specified by the insulation manufacturer.
Check with the manufacturers Technical Support
as to the maximum vent temperature require-
ments. The vent system must
always
be ade-
quately supported to prevent sagging.
(See Fig 4 Page 8)
FIGURE 14 FLUE VENT CONNECTION
For Direct and Indirect Venting it is recommended to install a length of ’C’ Vent onto the end of
the last tube before any fittings are installed. The “C” Vent connection should be slipped onto the
tube and positioned approx 6” beyond the swaged portion of the 4” tube and must be secured with
sheet metal screws.
PLEASE SEE SECTION 14: HEATER EXPANSION (PAGE 20).
12. COMBUSTION AIR DUCT
Where heater is operated in a negative air condi-
tion or in contaminated air atmosphere such as
woodworking shops, air for combustion must be
ducted from outside to intake flange on blower.
The total maximum combined length of vent and
combustion air duct is 80' for STV-JZ 155 and
130, and 50' for STV-JZ 110, 80 and 60. Neither
the individual flue vent or combustion air duct is
to exceed 50'. The total maximum allowable
combined vent /air duct is reduced by ten feet for
every 90
o
vent elbow installed.
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