INSTALLATION AND OPERATING INSTRUCTIONS Advanced Design Boiler 751, 1001, 1501

appliance not connected to the common vent sys-

tem. Turn on any exhaust fans, such as range

hoods and bathroom exhausts, so they will oper-

ate at maximum speed. Do not operate summer

exhaust fan. Close fireplace dampers.

d) Place in operation the appliances being inspected.

Follow the manufacturers instructions for lighting

each appliance. Adjust thermostat so appliance

will operate continuously.

e) Test for natural draft (negative pressure) 12"

above the outlet elbow after 5 minutes of main

burner operation. Use the flame of a match or can-

dle, or smoke from a cigarette, cigar or pipe, toilet

paper trick.

f) After it has been determined that each appliance

remaining connected to the common venting sys-

tem properly vents when tested as outlined above,

return doors, windows, exhaust fans, fireplace

dampers and other gas burning appliances to their

previous conditions of use.

g) Any improper operation of the common venting

system should be corrected so that the installation

conforms with the latest edition of the National

Fuel Gas Code, ANSI Z223.1, in Canada, the lat-

est edition of CSA B149 Installation Code for Gas

Burning Appliances and Equipment.

When re-sizing any portion of the common venting

system, the common venting system should be re-

sized to approach the minimum size as

determined using the appropriate tables in

Appendix G in the latest edition of the National

Fuel Gas Code, ANSI Z223.1, in Canada,

Appendix B of the latest edition of the Installation

Code for Gas Burning Appliances and Equipment.

Fig. 22: Horizontal Thru-Wall Venting without Add-on

Condensing Heat Exchanger (Category III)

Table L: Horizontal Thru-wall Venting without Add-on

Condensing Heat Exchanger (Category III)

ADB-1501