Burner Calibration; Installing The Gas Analyzer Probe - Watts AERCO Modulex EXT Commercial Series User Manual

Modulex EXT Commercial Series Boilers User Manual
CHAPTER 4: Installation Instructions

4.33 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).

4.33.1 Installing the Gas Analyzer Probe

Before making adjustments, a gas analyzer sensor probe must first be installed into the flue
exhaust outlet, as shown in Figure 4-27.
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 4-27: Gas Analyzer Probe Location in Flue Outlet
OMM-0095_0H
GF-139
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
Page 65 of 144
09/15/2017