AERCO_Tasks.doc

This document provides instructions for a Fireside (24-Month) maintenance, including maintenance to the burner modules, flue collector, spark igniter, and flame detector. These instructions contain all procedures described in the Annual (12-Month) maintenance instructions (P/N TID-0026) as well as additional procedures concerning the burner modules. For each of the different Modulex boiler models, there is an associated maintenance kit P/N, as shown in the table on the cover and at the end of these instructions.

REQUIRED Tasks:

• Inspect igniter and flame sensor (replace, Igniter: P/N 95251245, Detector: P/N 95251246)

• Check flame detection circuitry (See paragraph 1.3)

• Inspect and clean burner modules (clean if needed) (see Section 1.4)

• Inspect flue collector (clean if needed) (see Section 1.5)

• Wash heat exchanger (clean if needed)

• Inspect air filters (replace if needed, AERCO P/N 95261879)

• Inspect condensate drain lines (clean if needed)

• Check for gas leaks using a soapy solution

• Inspect igniter and flame sensor (replace, Igniter: P/N 95251245, Detector: P/N 95251246)

• Check pH of boiler system water (refer to Appendix C, Boiler Water Chemistry and Maintenance in MLX boiler manual GF-115-H).

RECOMMENDED Tasks:

• Inspect condensate tray (clean if needed)

• Inspect vent pipe (clean if needed)

• Check and adjust air/fuel ratio (see MLX boiler manual GF-115-H, paragraph 7.5.5)

• Inspect heat transfer surfaces (clean if needed)

• Clean strainer mesh (Monthly)

• Check inlet gas pressure. Changes in gas pressure require combustion recalibration (see MLX boiler manual GF-115-H, paragraph 7.5.5)

• Check vent and inlet air terminations

• Check electrical supply voltages