Innovation Series & ReCon Water Heater
GF-5050
Venting and Combustion Air Guide
TAG-0043_0Q
12/01/2016
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
•
Phone: 800-526-0288
Page
27
of
39
Figure 12: Transition Vent Sections
The vent system should always be pitched up 1/4 inch per foot (21 mm/m) (of run towards the vent
termination (see Figure 13). This will enable condensate to drain back to the unit for disposal. Low
spots in the vent must be avoided. Inspect periodically to ensure correct drainage.
As shown in Figure 13, the unit at the end of the vent main must be connected via an elbow. An end
cap must not be used as it may cause vibration and flue pressure fluctuations.
As discussed previously, the
static regain
method should
NOT
be used for common ductwork, but
rather, the one duct size should be used for the common run.
AERCO water heaters vents should never be interconnected to those connected to other
manufacturers’ equipment.
Figure 13: Connection of Unit at End of Vent Main
3.6. COMMON VENT CONDENSATE DRAINAGE
A condensate drain must be located in the common vent portion of the flue system. The drain must be
located to collect condensate flow from the common duct to prevent backflow into the first heater, as
shown in Figure 13.
