12
e. Figure 3.11 shows an option for routing the
exhaust and air inlet piping through an unused
chimney.
f. Figure 3.12 shows this option using inlet air from
a sidewall position.
g. Figure 3.13 shows an option for routing the
exhaust through an unused chimney with the
combustion air supplied from inside the building.
Be sure to note the requirements for combustion
air as listed under Section 1.D. “Combustion and
Ventilation Air”. These requirements are in
accordance with the National Fuel Gas Code.
D. EXHAUST VENT/AIR INTAKE PIPE SIZING
1. Series PBC™ boilers can be installed with 2" or 3"
Exhaust Vent/Air Intake piping with the vent length
restrictions shown in table 3.2 below. 2" applications
require a 3" initial connection with a reduction to 2"
venting.
2. Polypropylene vent systems can be installed using the
vent adapters provided with the boiler. The adapters
are compatible with 3" PVC or CPVC, 3" or 80mm
polypropylene and 3" AL-29-4C grade stainless steel.
Figure 3.9: Standard Vertical Vent Installation
VENTING & AIR INLET PIPING
Figure 3.10: Concentric Vertical Vent Installation
Figure 3.11: Venting Through a Chimney Using
Outside Air
To Next Page
Loading...
