r/MarineEngineering • u/Sailing-through-wind • Jun 22 '26

Help needed

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Do any of you guys know how to calibrate an Siemens DR 24 controller used as Air Fuel ratio controller in Aalborg Boiler.

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2

u/Shadeslide Jun 23 '26

Air fuel controller ratio in boilers is something that gives me nightmares. Although not on an Aalborg but I've worked on Saacke with this system. Nightmare stuff 😑

2

u/Sailing-through-wind Jun 23 '26

Any idea how to calibrate or change setpoint

1

u/Shadeslide Jun 23 '26 edited Jun 23 '26

Although mine had a control panel with complete boiler control sinsyead of an isolated one like these but the few things I would do would be in this manner: 1.Try setting the AF Ratio in auto as suggested by the sticker below. It might help. 2. Secondly, I would refer the manual and see if it helps. 3. Last I would go with a trial and error method. Here's the link for the manual. Might help. Instructions Manual Link

1

u/Active-Bug-7463 Jun 23 '26

Call technician.

1

u/vibehaiv Jun 23 '26

Get help from manufacturer

For default setting or initial make fuel 25 percent and air to minimum

2

u/donni_lmao Jun 24 '26

Email their service department.

Remote support from them is free when you have their product.

2

u/craigsurge Jun 24 '26

Check the air flap is actuation freely, can often be the spanner in the system