Specifications

12/03/2013 Page 23 of 40
GF-2050
Benchmark Series Boilers
Venting and Combustion Application Guide
TAG-0022_0S
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
1.22 Manifolded Ducted Combustion Air
For systems using manifolded ducted combustion ductwork, use the longest length of common
duct and the individual branch to the furthest boiler to calculate the pressure drop.
Figure 10a: Individual Vents – Preferred Installations
NOTE 1
For high wind, wind
blocked sites, a tee
may be installed at
the fresh air inlet.
The leg of the tee
connects to the
combustion air
intake. The
branches of the tee
can be in the
horizontal or vertical
direction, as
determined by the
system designer
and site conditions.