Specifications

12/03/2013 Page 3 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

Table of Contents

1.1 General .................................................................................................................... 4

1.2 Materials and Approvals ......................................................................................... 4

1.3 Code Required Vent Terminations ......................................................................... 4

1.4 Combustion Air Supply .......................................................................................... 6

1.5 Combustion Air from WITHIN the Building ......................................................... 7

1.6 Combustion Air from OUTSIDE the Building ....................................................... 8

1.7 Two-Permanent-Openings Method (USA Only) .................................................... 8

1.8 One Permanent Opening Method.......................................................................... 11

1.9 Opening a Louver Through the Benchmark Boiler .............................................. 12

1.10 Direct Vent/Ducted Combustion Air .................................................................... 13

1.11 Exhaust Vent and Combustion Air Systems ......................................................... 13

1.12 Gross Natural Draft ............................................................................................... 14

1.13 Acceptable Pressure Ranges ................................................................................. 14

1.14 Exhaust Fans ......................................................................................................... 14

1.15 Corrections for Altitude ........................................................................................ 14

1.16 Manifolded Systems.............................................................................................. 15

1.17 Elbow Quantity and Separation ............................................................................ 15

1.18 Exhaust Muffler And Air Inlet Attenuator Guidelines ......................................... 15

1.19 Vent and Combustion Air System Design Requirements ..................................... 16

1.20 Condensate Removal ............................................................................................ 20

1.21 Individually Vented Systems ................................................................................ 21

1.21.1 BMK 1500 Example: .............................................................................. 22

1.22 Manifolded Ducted Combustion Air .................................................................... 23

1.23 Common Vent Breeching (Manifolded) ............................................................... 25

1.24 Pressure Drop and Draft Data Tables ................................................................... 27