IBC SL 35-199 Operating Instructions Manual page 12

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.
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 fittings on the top of the boiler. Exhaust venting is to be inserted directly
into the 3" female stainless steel fitting on the left (see Figure 3).
For PPs material, use the 3" transition/ adaptor fitting (Sch 40 to PPs) offered
by the respective PPs manufacturers Centrotherm / Innoflue
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 fitting 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 fitting 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 fittings 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" flexible PPs (SL 35-199 model), up to 160 actual lineal feet are allowed in
a nominally vertical orientation (>45°). The equivalent length of 3" flex PPs shall
be computed using a multiple of 1.2:1, eg. 45' x 1.2 = 54' equivalent. With 45' of
3" flex, up to 146' equivalent of 3" rigid PPs would still be allowed.
EXHAUST PIPE SIZE
Sched.40; Rigid PPs
3"
4"
90° long sweep elbow
90° vent elbow
45° elbow
PPs 87-90° elbows
Flexible PPs
3" Flexible (SL 35-199)
3" PPs Flexible (SL 45-260)
4" Flexible
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).
MAXIMUM EQUIVALENT LENGTH
200'
200'
allow 5' equivalent
allow 8' equivalent
allow 3' equivalent
use 8' equivalent
160' (max.) actual lineal x 1.2 = equivalent
60' (max.) actual lineal x 3.33 = equivalent
160' (max.) actual lineal x 1.2 = equivalent
INSTALLATION AND OPERATION INSTRUCTIONS
(their part #
TM