Checking And Maintenance; Annual Start-Up And General Maintenance - DeDietrich MCA Pro 45 Installation And Service Manual

Wall-hung gas-fired condensing boilers
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7. Checking and maintenance

7.1 Annual start-up and general maintenance

Responsible
Service
technician
(refer to the
following pages
for instructions)
Owner
maintenance
(refer to the
User manual for
instructions)
Additional items if deemed necessary by the
performance or combustion:
Clean the heat exchanger.
Remove and clean the burner. Use compressed air only.
Vacuum the blower.
Review:
Review the maintenance performed with the owner.
MCA-Pro ISM Rv.4.1 2/2017
Any reported issues.
Inspect the interior. If necessary, clean and vacuum. WARNING - DO NOT
USE SOLVENTS!
Clean the condensate trap and fill with fresh water.
Check for any leaks - gas, water, condensate, flue.
If used, check the system water chemistry, antifreeze concentration and
inhibitor level.
Verify that the air and flue lines are sealed tight and in good condition.
Check the expansion tank, system piping and water pressure.
Check the control settings.
Clean the ignition electrode with steel wool and reposition. Replace if
worn.
Ground wiring and ignition.
Check the wiring and connections.
Perform start-up and verify the performance beginning with the filling of
the system.
Inspect the flame. Is it stable and consistent?
Checking ionization current, see page 90
Inspect the boiler gas piping and water piping.
If the flue temperature is more than 54˚F/˚C above the return water
temperature, the heat exchanger will need to be cleaned.
Inspect the front casing gaskets v replace if necessary
Inspect the boiler area.
Inspect the air openings.
Inspect the temperature/pressure gauges.
Ensure the boiler front door is secure.
Inspect the vent piping.
Inspect the air piping.
Inspect the relief valve.
Inspect the condensate system.
Inspect the automatic air vents, if used.
Test the low water cut off, if one is used.
Ensure the relief valve is operating properly.
Shut down the boiler unless it is used for domestic hot water.
MCA Pro 45/65/90/115
Description
DANGER
Adhere to the maintenance and service procedures
provided in this manual and other boiler literature.
The boiler and/or the system could be damaged
if the maintenance and service is not performed.
Failure to adhere to the instructions in this and other
boiler manuals could result in severe personal injury,
substantial property damage or death.
Schedule
Annual start-
up (see first
year special
inspection)
Daily
Monthly
Periodically
Every 6 months
End of season
83

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Mca pro 90Mca pro 115Mca pro 65

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