GF-5050
Innovation Series & ReCon Water Heater
TAG-0043_0Q
Venting and Combustion Air Guide
Page
26
of
39
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
•
Phone: 800-526-0288
12/01/2016
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.
Figure 11b: Required Interconnection of Groups of Units
Figure 12 illustrates the preferable “transition vent section” when making the 45° connection into a
main. The main can also remain at one diameter, as long as it is sized for the total number of units
vented and the 45° branch connection is retained. Use of the preferred “transition” assembly will
reduce the overall system pressure drop.
NOT
APPROVED
REQUIRED
