AERCO Modulex EXT 321 - 1123 - Manual (Page 52)

MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
Example 1:
A 40 foot (12.2 m) length of vent pipe and 1 sharp 90° elbow add up to 40 ft. + 10 ft. = 50
equivalent ft. (17.4 m).
Example 2:
A 30 foot (10.4 m) length of vent pipe and 2 sharp 90° elbows add up to 30 ft. + (2 x 10 ft.) =
50 equivalent ft. (17.4 m).
Page 52 of 148 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0087_0E
12/01/14 Phone: 800-526-0288 GF-143