Schwank STSp-USA - Manual (Page 20)

SP-MSTP-AU-05A
STS-p Manual
RD: DEC, 2003
RL: 5
KH
Where the vent pipe passes through areas
where the ambient temperature is likely to
produce condensation of the flue gases, t h e
vent pipe shall be insulated with a suitable
material as approved and specified by the
insulation manufacturer. Check with Schwank Tech. Support as to the
maximum vent temperature requirements.
The vent system must always be adequately
supported to prevent sagging.
(See Fig 4 Page 8)
FIGURE 18 FLUE VENT CONNECTION
The end of the tube is swaged and will directly accommodate regular “C” vent and
fittings for venting to outside. The “C” Vent connection to the radiant tube end must
be secured with sheet metal screws.
PLEASE SEE SECTION 13: 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 STS-p-200, 175, 155 and 130, and 50' for STS-p 110, 80,
60 and 45. Neither the flue vent or combus-
tion air duct is to exceed 50'. The total maxi-
mum allowable combined vent /air duct is re-
duced by ten feet for every 90
o vent elbow
installed.
FLUE VENT END
OF TUBE
Page 16