Schwank STSp-WP - Manual (Page 20)

SP-MSWP-BX-09A
STSp-WP Manual
RD: MAY 2004
RL: 9
KH
Page 16
Where the vent pipe passes through areas
where the ambient temperature is likely to
produce condensation of the flue gases, the vent pipe shall be insulated. The vent system
must be adequately supported to prevent
sagging.
FIGURE 19 FLUE VENT CONNECTION
12. COMBUSTION AIR DUCT
For the carwash heater air for combustion
must be ducted from outside to blower flange
on top of burner housing. The total maximum
length of vent and combustion air duct is 80'
for the STSp-WP 200, 175, 155 and 130,
and 50' for STSp-WP 110, 80, and 60. Neither the flue vent or combustion air duct
is to exceed 50'. The total maximum vent al-
lowable is reduced by ten feet for every 90
o
vent elbow installed.
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.
FLUE VENT END OF TUBE
PLEASE SEE SECTION 14: HEATER EXPANSION (PAGE 19).