Viessmann annual service for waranty

FataVerde

FreeBear said:

FreeBear said:

FataVerde said:

rustybloke425 said:

I work with (not for!!) Viessmann. No you don't have to strip down the boiler that's nonsense. Just get it serviced by a gas safe installer annually and keep the records. You can buy a service kit for your boiler to see what needs changing. Normally it's just ignition & ion electrodes & gaskets,  burner gasket, maybe one other random gasket just for fun. 

Thanks for this! Here's the standard checklist Viessmann sent me. Does it look like a standard service to you? I'm not at home to check the previous year's report, but the service lasted 30-40min last year.

I'm due for a service on a Viessmann 050 (booked for 15th July). From watching the engineer on the last service, your check list covers everything that was done. If there is anything to add, I'll let you know.

Scratch head to work out how to remove front cover.

Check pipe connections gas/water leaks.

Check valves under boiler operate.

Check expansion vessel pressure.

Check & clean ignition terminals.

Measure gas pressure @ meter & boiler (and confirm pressure drop is within spec).

Measure combustion gas levels.

Visual check of flue & connections (mine is a little more convoluted than most).

Check & clean magnetic filter.

Replace front cover and clean up.

Previous service, the combustion chamber cover was removed. Not this time...

Have been advised to get a spare gasket (rubber O ring) for the mag filter. Nothing wrong with the existing one, but best to have a spare and avoid paying top price in an emergency.

Sop useful! Thanks! May I ask what the price for the service was? And what app are you using? I have the Nest and I think the Viessmann app on one of my old phones.

FreeBear

FataVerde said:

FreeBear said:

FreeBear said:

FataVerde said:

rustybloke425 said:

I work with (not for!!) Viessmann. No you don't have to strip down the boiler that's nonsense. Just get it serviced by a gas safe installer annually and keep the records. You can buy a service kit for your boiler to see what needs changing. Normally it's just ignition & ion electrodes & gaskets,  burner gasket, maybe one other random gasket just for fun. 

Thanks for this! Here's the standard checklist Viessmann sent me. Does it look like a standard service to you? I'm not at home to check the previous year's report, but the service lasted 30-40min last year.

I'm due for a service on a Viessmann 050 (booked for 15th July). From watching the engineer on the last service, your check list covers everything that was done. If there is anything to add, I'll let you know.

Scratch head to work out how to remove front cover.

Check pipe connections gas/water leaks.

Check valves under boiler operate.

Check expansion vessel pressure.

Check & clean ignition terminals.

Measure gas pressure @ meter & boiler (and confirm pressure drop is within spec).

Measure combustion gas levels.

Visual check of flue & connections (mine is a little more convoluted than most).

Check & clean magnetic filter.

Replace front cover and clean up.

Previous service, the combustion chamber cover was removed. Not this time...

Have been advised to get a spare gasket (rubber O ring) for the mag filter. Nothing wrong with the existing one, but best to have a spare and avoid paying top price in an emergency.

Sop useful! Thanks! May I ask what the price for the service was? And what app are you using? I have the Nest and I think the Viessmann app on one of my old phones.

Service was £90 including VAT. That's about the going rate in this area.

The "app" I use.... (you asked for this ) Home Assistant to provide the web based interface and data collection. ESPHome handles the low level OpenTherm interface and have openHASP running on a small wall mounted display to show the thermostat (also doubles up as a light switch along with a few other things).

The engineer was able to access everything he needed from the front panel on the boiler (just needed to put in to "service" mode). Now know just how much power the boiler will shove in to the heating when run flat out - Quite an impressive 20.6kW @ 80.6°C flow temperature. Over winter, most of the time I was running at 4-6kW @ 40-50°C with an initial burst of 8-10kW at startup.

FataVerde

@FreeBear I dug out my service sheet from last year because I am now afraid it was not done according to the manufacturer's expectations and it might compromise my ten-year warranty. Can you let me know if you think the service was done properly and if it's what Viessmann expects? The same company that did the service last year advised me they cannot service Viessmann anymore because Viessmann expect a strip-down and that would cost me more than if I booked straight with a Viessmann engineer. 

FreeBear

FataVerde said:

@FreeBear I dug out my service sheet from last year because I am now afraid it was not done according to the manufacturer's expectations and it might compromise my ten-year warranty. Can you let me know if you think the service was done properly and if it's what Viessmann expects? The same company that did the service last year advised me they cannot service Viessmann anymore because Viessmann expect a strip-down and that would cost me more than if I booked straight with a Viessmann engineer.

That list is a lot longer than any I've had for my boiler. First service, the engineer opened up the combustion chamber to check for (presumably) any debris. That didn't happen on the latest service.. As far as I'm aware, as long as the boiler is serviced annually, the warranty should be good.

Much like cars, there is no legal requirement to have a boiler (or car) serviced by an "approved" engineer - There have been high court cases in the past to validate that point. I've not had reason to test that as the boiler has been performing flawlessly. But if I do need to make a warranty claim and Viessmann decide to play silly buggers, I'll go after my credit card company (used it to pay in full).

FataVerde

FreeBear said:

FataVerde said:

@FreeBear I dug out my service sheet from last year because I am now afraid it was not done according to the manufacturer's expectations and it might compromise my ten-year warranty. Can you let me know if you think the service was done properly and if it's what Viessmann expects? The same company that did the service last year advised me they cannot service Viessmann anymore because Viessmann expect a strip-down and that would cost me more than if I booked straight with a Viessmann engineer.

That list is a lot longer than any I've had for my boiler. First service, the engineer opened up the combustion chamber to check for (presumably) any debris. That didn't happen on the latest service.. As far as I'm aware, as long as the boiler is serviced annually, the warranty should be good.

Much like cars, there is no legal requirement to have a boiler (or car) serviced by an "approved" engineer - There have been high court cases in the past to validate that point. I've not had reason to test that as the boiler has been performing flawlessly. But if I do need to make a warranty claim and Viessmann decide to play silly buggers, I'll go after my credit card company (used it to pay in full).

Oh, that's a great point. I'll pay by credit card. I also paid my boiler and installation by credit. I just find it weird that the same company who did this service for me last year for £60 and quoted the same sum now then came back to me to say it would be too expensive to service a Viessmann according to the manufacturer's requirements. I sent them the maintenance sheet, but they did not reply. Other engineers, Viessmann-certified, have quoted me between 120 and 185. Only one guy quoted 80 and said the boiler does need a full strip down. He's a Viessmann certified engineer and said he'll perform a standard service because the service should be done in keeping with the state of the boiler. I guess that's why the price varies so much because some engineers assume they have to check every item on the Viessmann list.

A gas engineer who is retired now said that many engineers would consider Viessmann's requirements a strip-down so who knows? The boiler is flawless, I even forget I have it. It's only 2 years only anyway.

FataVerde

That list is a lot longer than any I've had for my boiler. First service, the engineer opened up the combustion chamber to check for (presumably) any debris. That didn't happen on the latest service.. As far as I'm aware, as long as the boiler is serviced annually, the warranty should be good.

Much like cars, there is no legal requirement to have a boiler (or car) serviced by an "approved" engineer - There have been high court cases in the past to validate that point. I've not had reason to test that as the boiler has been performing flawlessly. But if I do need to make a warranty claim and Viessmann decide to play silly buggers, I'll go after my credit card company (used it to pay in full).

So, I talked to the technical team at Viessmann over the phone and they confirmed that they expect a full strip-down boiler service, basically all the steps listed in this form, which would get me to over £120. I'm just leaving this here for other Viessmann owners because it was confirmed by them several times. Had I known I'd be paying double, I'd have reconsidered buying a Viessmann, tbh. This is the list. On searching my manual, I found it there too.

Steps to be followed

Step Completed

1. Filling the heating system

2. Checking all connections on the heating water and DHW sides for leaks

3. Removing the front panel

4. Checking the static pressure and supply pressure

5. Performing an actuator test

6. Removing the burner

7. Checking the burner gasket and burner gauze assembly

8. Checking and adjusting the ignition and ionisation electrodes

9. Checking the back draught safety devices

10. Cleaning the heating surfaces

11. Checking the condensate drain and cleaning the trap

12. Installing the burner

13. Checking the neutralising system (if installed)

14. Checking the flow limiter (only for gas condensing combi boiler)

15. Checking the expansion vessel and system pressure

16. Checking the safety valve function

17. Checking the electrical connections for firm seating

18. Checking all gas equipment for leaks at operating pressure

19. Fitting the front panel

20. Checking the combustion quality

21. Checking the flue system for unrestricted flow and leaks

22. Checking the external LPG safety valve (if installed)

Viessmann

rustybloke425

I fail to see how this is a strip down? 

What do most engineers do when they service a boiler then? Just check the gas and poke it in a few places? 

Alanp

I’m having my viessman boiler serviced on Tuesday, it’s not been done since, at least before the pandemic, it’s well out of warranty as it was installed in 2009, as far as I remember, when it was in warranty the heat exchanger was stripped down and cleaned out, this was done buy the guy that installed it so that might have just been the thing that he did, my boiler is working perfectly as far as I can tell, but I’m expecting it to be found to be needing to be replaced when it’s serviced, who knows, it’s the first time we’ve used this company so hopefully it’s not going to be a lot of head scratching and sharp intakes of breath, they are viessman accredited although they do other makes as well..