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SECTION 2
EDR-PURE-IOM-230608
requirements in Table 6, and a spill switch and a CO2 detector are installed
and interlocked with the boiler(s). Barometric dampers must never be
used in a positive pressure (Category IV) exhaust or ducted combustion air
application.
5. Refer to Table 7 for acceptable vent materials and temperature limits. The
use of cellular core PVC/CPVC or Radel® (polyphenylsulfone) in venting
systems is prohibited.
6. A stainless steel adapter (not supplied) speci c to vent manufacturer
type and material will be required. See Table 8 and Figure 19. Consult the
venting supplier for guidance.
7. Adequate provision must be made to support the weight of the exhaust
venting. It must not be supported by the boiler exhaust connection.
8. Following the venting manufacturer's instructions for installation of ue
gas venting.
9. Horizontal runs must allow for ue gas condensate to drain back with a
minimum upward pitch of ¼" (7 mm) per foot (300 mm) run. Failure to
do so can create a condensate pocket, which can result in an inoperative
boiler. There must be no low spots in the exhaust vent, as this can also
result in a condensate pocket.
10. The boiler control will automatically disable and reset the burner should
the ue gas temperature exceed the stack material type setting. This may
be eld adjusted (See Operation) for installations utilizing a material
in Table 7 approved for higher ue gas temperatures. To prevent the
likelihood of alarms caused by approaching venting material limitations, it
is suggested to use AL 29-4C, 316L, or Polypropylene in applications where
return water temperatures can exceed 140°F .
11. If stack drains are installed, they must be pitched back to the condensate
drain trap, minimum pitch of ¼" (7 mm) per foot (300 mm) run.
TABLE 7 ACCEPTABLE EXHAUST VENTING MATERIALS
AL-294C
Venting
Material
(UL1738)
Maximum
600° F
Flue Gas
(315° C)
Temperature
Questions? Please Contact Your Local Manufacturer's Representative
316L SS
Polypropylene
(UL1738)
(UL 1738)
550° F
230° F
(287° C)
(110° C)
Sch. 40
Sch. 40
CPVC
PVC
200° F
158° F
(93° C)
(70° C)
INSTALLATION
!
WARNING
Fulton accepts no liability for installation
of any venting, including the selection of
venting materials. Maximum allowable
ue gas operating temperatures may
vary by manufacturer. Consult the
venting supplier for maximum allowable
temperatures.
2-27
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