118
Rinnai M
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Series Condensing Boiler Combi Manual
The following information is required by ANSI Z21.13:
If a boiler is removed from a common vent system, the common vent system is likely to be too large
for proper venting of the remaining appliances connected to it.
The instructions shall include the test procedure set forth below:
At the time of removal of an existing boiler, the following steps shall be followed with each other
appliances remaining connected to the common venting system are not in operation.
1.
Seal any unused openings in the common venting system.
2.
Visually inspect the venting system for proper size and horizontal pitch and determine
there is no blockage or restriction, leakage, corrosion and other deficiencies which could
cause an unsafe condition.
3.
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 of 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 fireplace dampers.
4.
Place in operation the appliance being inspected. Follow the lighting instructions. Adjust
thermostat so appliance will operate continuously.
5.
Test for spillage at the draft hood relief opening after five minutes of main burner
operation. Use the flame of a match or candle, or smoke from a cigarette, cigar, or pipe.
6.
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, fireplace dampers, and any other gas
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burning appliance to their previous
condition of use.
7.
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 the
Natural Gas and Propane Installation Code, CAN/CSA B149.1. When resizing any portion of
the common venting system, the common venting system should be resized to approach
the minimum size as determined using the appropriate tables in Chapter 13 of the
National Fuel Gas Code, ANSI Z223.1/NFPA 54, and/or the Natural Gas and Propane
Installation Code, CAN/CSA B149.1.
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