IBC SL 35-199

INSTALLATION AND OPERATION INSTRUCTIONS
1-6
SL 35-199, SL 45-260 MODULATING GAS BOILERS
Use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel®
(polyphenolsulfone) in venting systems shall be prohibited.
The boiler offers 3” venting connections. Fittings are to be used to adapt to the
appropriate diameter (see Vent Travel below). There are two stainless steel,
gasketedttingsonthetopoftheboiler.Exhaustventingistobeinserteddirectly
intothe3”femalestainlesssteelttingontheleft(see Figure 3).
ForPPsmaterial,usethe3”transition/adaptortting(Sch40toPPs)offered
by the respective PPs manufacturers Centrotherm / Innoue
TM
(their part #
ISAA0303) or M&G Dura Vent /PolyPro (#3PPS-AD). For PPs material exposed
to outdoor weather, follow the venting suppliers’ recommendations on UV
protection.
Combustion air piping - if used - is inserted directly into the 3” female stainless
steelttingontheright(see Section 1.4.7).
Venting shall be supported in accordance with applicable code.
*Manufacturers of stainless steel Type BH venting systems must submit
their approved transition tting to IBC for evaluation and written approval.
1.4.3 Vent Travel
CPVC or PPs (Rigid Single Wall) piping is the standard venting option; with
this, the SL 35-199 and SL 45-260 boilers, for example, can be sited up to
200 equivalent feet from the vent termination using 3”. The actual vent travel
allowanceisreducedforttingsinaccordancewithTable 3. – e.g. for SL 35-199
and SL 45-260 boilers using 6 x 90º CPVC elbows, the maximum lineal measure
of pipe allowed using 3” pipe is 152 feet (200’ – (6 x 8' = 48) = 152’).
For3”exiblePPs(SL35-199model),upto160actuallinealfeetareallowedin
anominallyverticalorientation(>45°).Theequivalentlengthof3”exPPsshall
be computed using a multiple of 1.2:1, eg. 45’ x 1.2 = 54’ equivalent. With 45’ of
3”ex,upto146’equivalentof3”rigidPPswouldstillbeallowed.
EXHAUST PIPE SIZE MAXIMUM EQUIVALENT LENGTH
Sched.40; Rigid PPs
3” 200’
4” 200’
90° long sweep elbow allow 5’ equivalent
90° vent elbow allow 8’ equivalent
45° elbow allow 3’ equivalent
PPs 87-90° elbows use 8’ equivalent
Flexible PPs
3” Flexible (SL 35-199) 160’ (max.) actual lineal x 1.2 = equivalent
3” PPs Flexible (SL 45-260) 60’ (max.) actual lineal x 3.33 = equivalent
4” Flexible 160’ (max.) actual lineal x 1.2 = equivalent
Table 3: Maximum exhaust venting length.
NOTE: Unused intake travel cannot be added to the exhaust. Unequal
intake and exhaust piping is allowed (see Section 1.4.8).
WARNING
Do not mix venting materials
from different Manufacturers.
These venting materials are
designed to be installed as
part of a complete system.
Failure to comply may result
in severe personal injury or
death.
WARNING
Fully insert the approved
venting material into the boilers
exhaust outlet and tighten
clamp to ensure the venting
connection is locked in place.