Specifications

12/03/2013 Page 25 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
1.23 Common Vent Breeching (Manifolded)
AERCO forced draft boilers are designed for application in common vent systems.
Contact your AERCO sales representative or AERCO International for design assistance
and approval when designing manifolded exhaust vent systems.
Connections to common vent breeching or duct work must be accomplished with a 45° elbow in
the direction of flow in the main breeching. “Tees” should not be used to accomplish these
connections. See Figure 11a.
RECOMMENDED
NOT
RECOMMENDED
E
N
T
E
R
IN
D
E
X
A
L
A
L
LO
VE
CONTR
OLS
CORP.
E
N
T
E
R
IN
D
E
X
A
L
A
L
LO
VE
CONTR
OLS
CORP.
Figure 11a: Recommended Connections to Common Vent Breeching
Interconnection of groups of units must never be accomplished via a “tee”. As shown in
Figure 11b, change the direction with one of the mains and then connect the second three
diameters (common section diameter) from this turn via a 45° connection.
RECOMMENDED
NOT
RECOMMENDED
45°
3X DIA. MIN.
Figure 11b: Required Interconnection of Groups of Units
NOT
APPROVED
REQUIRED
NOT
APPROVED
REQUIRED