AERCO Modulex EXT 321 - 1123 - Manual (Page 69)

MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
3.33 Burner Calibration
WARNING!
All the instructions indicated below are for the exclusive use of
qualified AERCO service technicians or installers.
All the boilers are supplied already calibrated and tested. However, if it is necessary to change
the calibration due to gas conversion or adaptation to the mains supply system, the gas valve
must be re-calibrated (using Service Mode function in the E8 controller).
Installing the Gas Analyzer Probe 3.33.1
Before making adjustments, a gas analyzer sensor probe must first be installed into the flue
exhaust outlet as shown in Figure 3-36.
Installing the Gas Analyzer Probe into Flue Outlet
1. Remove the cap (#2) from the gas outlet (#1)
2. Install the probe adapter (#3) into the gas outlet (#1) where cap was removed.
3. Insert the analysis probe (#4) into hole of the probe adaptor.
4. After measurements are taken and adjustments made, remove the probe, probe adaptor,
then reinstall the cap (#2) onto the gas outlet (#1).
Figure 3-36: Gas Analyzer Probe Location in Flue Outlet
OMM-0087_0E AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 69 of 148
GF-143 Phone: 800-526-0288 12/01/14