Columbia CEG-C, Инструкция по установке, эксплуатации и обслуживанию

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9
VENT SYSTEM MODIFICATION
When an existing boiler is removed from a common
venting system, the common venting system is likely
to be too large for the proper venting of the appliances
remained connected to it. If this situation occurs, the
following test procedure must be followed:
At the time of removal of an existing boiler, the
following steps shall be followed with each appliance
remaining connected to the common venting system
placed in operation, while the other appliances
remaining connected to the common venting system
are not in operation.
• Seal any unused openings in the common venting
system.
• Visually inspect the venting system for proper
size and horizontal pitch and determine there is
no blockage or restriction, leakage, corrosion and
other de fi 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 remaining connected to the
common venting system are located and other
spaces in the building. Turn on clothes dryers
and any appliance not connected to the common
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 damper.
• Place in operation the appliance being inspected.
Follow the lighting instructions. Adjust thermostat
so appliance will operate continuously.
• Test for spillage at the draft hood relief opening
after 5 minutes of main burner operation. Use
the fl ame of a match or candle, or smoke from a
cigarette, cigar or pipe.
• After it has been determined that each appliance
remaining connected to the common 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 latest revision of the National
Fuel Gas Code, ANSI Z223.1/NFPA 54. 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 Chapter 13 of the
National Gas Fuel Code, ANSI Z223.1/NFPA 54.