AERCO Esteem O&M Manual - Manual (Page 18)

12
Removal of an Existing Boiler from a Common Vent System
mon venting system placed in operation, while
the other appliances remaining connected to
the common venting system are not in opera-
tion.
• Seal any unused openings in the common
venting system.
• Visually inspect the venting system for
proper size and horizontal pitch and de-
termine there is no blockage or restriction,
leakage, corrosion and other defi ciencies
which could cause an unsafe condition.
• Insofar as is practical, close all building
doors and windows and all doors between
the space in which the appliances remain-
ing connected to the common venting
system are located and other spaces of
the building. Turn on clothes dryers and
any appliance not connected to the com-
mon venting system. Turn on any exhaust
fans, such as range hoods and bathroom
exhausts, so they will operate at maximum
speed. Do not operate a summer exhaust
fan. Close fi replace dampers.
• Operate the appliance being inspect-
ed. Follow the lighting instructions. Adjust
thermostat so appliance will operate con-
tinuously.
• Test for spillage at the draft hood relief
opening after 5 minutes of main burner op-
eration. Use the fl ame of a match or candle,
or smoke from a cigarette, cigar or pipe.
• After it has been determined that each ap-
pliance remaining connected to the com-
mon venting system properly vents when
tested as outlined above, return doors,
windows, exhaust fans, fi replace dampers,
and any other gas-burning appliance to
their previous condition of use.
• Any improper operation of the common
venting system should be corrected so the
installation conforms with the National Fuel
Gas Code, ANSI Z223.1/NFPA 54 and/or
CAN/CGA B149, Installation codes. When
re-sizing any portion of the common vent-
ing system, the common venting system
should be re-sized to approach the appro-
priate tables in Part II of the National Fuel
Gas Code ANSI Z223.1/NFPA 54 and/or
CAN/CGA B149, Installation codes.
GF-125