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Vitodens pix.
heatboy
Member Posts: 1,468
We set-up the purge station we use for glycol and enter the bottom of the LLH and re-circulate water through the indirect/boiler, then just the boiler. After that we purge each loop/zone individually through the LLH and pump station. A couple of valves with drain fore and aft are a big help. Once flow is established the auto vent on the LLH will take care of the rest.
There was an error rendering this rich post.
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Comments
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Vitodens fights poor water quality.
This was an emergency replacement for another failed Trianco HeatMaker (The HX tank let go.)
I'm now using the low loss headers made & manufactured by "munchkins in MT" for Radiant Engineering. Nice people to deal with (once you get to know them;-) I think that this is the first time that I've used the bottom port on a LLH to include the expansion tank and fill station. Sort of like Pumping away®. (we Americans must change everything) The top of the LLH has an immersion well for the Viessmann boiler temperature sensor as well as another 1/2"FIP port that has a Callefi ? (air vent) that can be removed & cleaned without de-pressurizing the system. THAT'S WAY COOL!
It seems that for some reason; (high pressure drop) that the Vitodens 200's are VERY hard to remove air from (upon initial commissioning.) I've found that the air vent on top of the LLH helps reduce the time spent removing this air. This thing "pisses air." How many faults must one clear before getting all the air out and establish an operational flow? Been their. Done that! I've found that the use of the air vent on-top of the LLH dramatically reduces start up time.
I used another Viessmann Vitodens 200 and V 300 indirect storage tank here because of some rather nasty water quality issues that seem to be tearing up hydronic & domestic water systems in this town. The 316ti stainless can withstand more than five times the elevated levels of chlorides that the town wells provide. I still truck in my own water for the closed loop side and shut off the automatic-feed-water valve as well as clean and treat the water with Rhomar 922 and 9100.
Think this system will stand the test of time?
Think the Germans would approve of this setup?0 -
Vito purging
I fought the purge thing with Vito's also. The radial design of the HX in them makes it difficult to get all the air out because each loop of the HX offers a high spot for air to hide in. We now set up all of them with iso valves on each side of the LLH so purging can be accomplished on both the system and the boiler side easily. Just use a boiler drain on each side of a ball valve and make sure you get them in a location that allows you to purge into the boiler. IE; the return line.
If I can hunt down a pic, I'll post it.0 -
Removing air can be a ****!
They flash to steam soooo fast.
One trick that was taught to me at "Viessmann Acadamy" is to take off the plastic cover from the DHW coil, reverse it and stick it into the solonoid valve and hold. This diverts all the water through the coil. It's HARD to hold it in but, it does work.
Like to see how the iso-valve setup works for you.
To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"0 -
It's Art!
> This was an emergency replacement for another
> failed Trianco HeatMaker (The HX tank let go.)
> I'm now using the low loss headers made &
> manufactured by "munchkins in MT" for Radiant
> Engineering. Nice people to deal with (once you
> get to know them;-) I think that this is the
> first time that I've used the bottom port on a
> LLH to include the expansion tank and fill
> station. Sort of like Pumping away®. (we
> Americans must change everything) The top of the
> LLH has an immersion well for the Viessmann
> boiler temperature sensor as well as another
> 1/2"FIP port that has a Callefi ? (air vent) that
> can be removed & cleaned without de-pressurizing
> the system. THAT'S WAY COOL!
>
> It seems that
> for some reason; (high pressure drop) that the
> Vitodens 200's are VERY hard to remove air from
> (upon initial commissioning.) I've found that
> the air vent on top of the LLH helps reduce the
> time spent removing this air. This thing "pisses
> air." How many faults must one clear before
> getting all the air out and establish an
> operational flow? Been their. Done that! I've
> found that the use of the air vent on-top of the
> LLH dramatically reduces start up time.
>
> I
> used another Viessmann Vitodens 200 and V 300
> indirect storage tank here because of some rather
> nasty water quality issues that seem to be
> tearing up hydronic & domestic water systems in
> this town. The 316ti stainless can withstand more
> than five times the elevated levels of chlorides
> that the town wells provide. I still truck in my
> own water for the closed loop side and shut off
> the automatic-feed-water valve as well as clean
> and treat the water with Rhomar 922 and 9100.
> Think this system will stand the test of time?
> Think the Germans would approve of this setup?
0 -
It's Art!
> This was an emergency replacement for another
> failed Trianco HeatMaker (The HX tank let go.)
> I'm now using the low loss headers made &
> manufactured by "munchkins in MT" for Radiant
> Engineering. Nice people to deal with (once you
> get to know them;-) I think that this is the
> first time that I've used the bottom port on a
> LLH to include the expansion tank and fill
> station. Sort of like Pumping away®. (we
> Americans must change everything) The top of the
> LLH has an immersion well for the Viessmann
> boiler temperature sensor as well as another
> 1/2"FIP port that has a Callefi ? (air vent) that
> can be removed & cleaned without de-pressurizing
> the system. THAT'S WAY COOL!
>
> It seems that
> for some reason; (high pressure drop) that the
> Vitodens 200's are VERY hard to remove air from
> (upon initial commissioning.) I've found that
> the air vent on top of the LLH helps reduce the
> time spent removing this air. This thing "pisses
> air." How many faults must one clear before
> getting all the air out and establish an
> operational flow? Been their. Done that! I've
> found that the use of the air vent on-top of the
> LLH dramatically reduces start up time.
>
> I
> used another Viessmann Vitodens 200 and V 300
> indirect storage tank here because of some rather
> nasty water quality issues that seem to be
> tearing up hydronic & domestic water systems in
> this town. The 316ti stainless can withstand more
> than five times the elevated levels of chlorides
> that the town wells provide. I still truck in my
> own water for the closed loop side and shut off
> the automatic-feed-water valve as well as clean
> and treat the water with Rhomar 922 and 9100.
> Think this system will stand the test of time?
> Think the Germans would approve of this setup?
0 -
It's Art!
Thanks, Gary. We enjoy working with those who see room for improvement in everything. Your customers now have an original "Gary Wallace" hanging on the wall. ;-)
As Steve Ebels mentioned earlier, the addition of a 'fill rig' on the boiler side of the LLH is almost a must with the Vitodens. Though you can use a boiler drain on the bottom of the LLH as one of the drains.
I question why the Germans don't build them like this already. Who says Americans have to do things just "good enough"?
One of the best things about integrating an automatic air vent into the top of the LLH is that it makes a separate vent unnecessary. It seems to work at least as well, plus it vents both sides.
They're powder coated a very light gray now.
-Andrew0 -
I think the Germans,
as well as myself, would be a bit frightened by your color choices
Nice work!
hot rod
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Gary....
I wanted to see exactly how bright your legs really were, so I digitally enhanced your photo. You too can fix dark pictures using Irfanview, available at irfanview.com.
Nice job.
ME
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Low Loss Header
Has anyone tried the Caleffi HYDRO Seporator? I like their design of it. It comes in 1" 11gpm to 4" 246gpm and is a well built unit. It comes with 1/2" air seporator, sensor port, female union or flanged connections. plus it comes with a very nice insulated jacket.0 -
Those can only be used...
with round boilers generating round BTU's, correct?
If you tried to use on on a Vitodens, which is rectangular and generates rectangular BTU's, you'd probably confuse the poor boogers...
Gotta be careful around un-trained BTU's.
ME :-)
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