Annual Maintenance LAARS MFTHW
Annual Maintenance of LAARS MFTHW
Annual Flushing of CH Heat Exchanger as outlined in the I/O Manual Section 8 , pages 75-77.
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In addition to flushing of the CH Heat Exchanger, as referenced above, components and "safeties" should be visually checked and tested as required:
- Pressure Relief Valve
- Pressure Reducing Feed Valve (external)
- Auto Air Vents
- High Temperature Limit (water)
- High Temperature Limit (combustion)
- Low Water Cut Off ( Internal and External if so equipped)
- Exhaust Temperature Limit
- Optical Flame Sensor
- Check all Zone Pumps and/or Zone Valves
- Check Boiler Pump
- Check Expansion Tank (proper pressure and condition)
- Vent and Intake Piping (proper pitch maintained) free of obstructions and bird screen integrity.
- Check Condensate Trap (internal for cleanliness and free of obstruction)
- Check effectiveness of Condensate Neutralizer (replace media or device as necessary)
- MFTHW140-Check Burner Screen (140,000 BTU Models ONLY)
AN ANNUAL COMBUSTION ANALYSIS IS REQUIRED !
Gas Set Up and Adjustments are outlined in section 4.11 pages 35-36 of the I/O Manual.
The Videos below take you through proper combustion analysis, set up and adjustments.
If proper combustion results can not be achieved , burner removal and burner plate cleaning and/or replacement may be necessary !
Video here: