Air Venting Of The Heating System - Watts AERCO Modulex EXT Series Technical Application Manual

Modulex EXT Series Piping
Application Guide
BOILER LOOP DESIGN GUIDELINES

3.6. AIR VENTING OF THE HEATING SYSTEM

The Modulex boiler comes standard with an automatic air vent inside the boiler (see Figure 4a and 4b). This
vent is for the boiler only and not the entire heating system. An effective air vent for air removal for the entire
heating system must be installed in the highest point of the system piping.
Figure 4a: MODULEX EXT Main Components (Right Side View)
(EXT 450 2S - 1100 2S))
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
TAG-0099 Page 17 of 37
Phone: 800-526-0288 10.07.2021