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factory if it is not possible to reduce the CO level below 200PPM air free within the range of CO2s shown for the fuel and
altitude at which the boiler is being used.
8) Replace the screw cap in the vent adapter when combustion testing is complete.
9) Cycleboileratleastvetimesatthenalthrottlesettingtoensureburnerigniteswithoutdelayandwithoutnoise.
10) Verify that the gas inlet pressure is between the following shown in Table A.5 with all gas appliances (including the converted
boiler) both on and off.
11) LP CONVERSIONS ONLY - A sheet of yellow labels is provided in the envelope with this manual for boilers converted
from natural to LP gas. Select the model from this sheet of labels and apply them as follows:
a. Apply the “Rating Plate Label” adjacent to the rating plate.
b. Apply the “Gas Valve Label” to a conspicuous area on the gas valve.
c. Apply the “Boiler Conversion Label” to a conspicuous surface on, or adjacent to, the outer boiler jacket. Fill in the
date of the conversion and the name and address of the company making the conversion with a permanent marker.
12) Refer to the “Start-up and Checkout” section of the boiler installation manual and perform any checks not already completed.
13) Higher altitudes cause the boiler input and output to drop by between 0% and 2.4% per thousand feet, depending on model,
fuel, and altitude. Consult factory for details.