gb 142 piping

singh

Sorry it took a while to post these.

Once again all radiant , with multiple zoning accomplished using manifold actuators. RC-10 used. You can also do this with baseboard using manifold piping or panel rads. This method cuts down on the multiple pumps. Eliminating an Argo box and "exotic" wiring schemes to utilize the RC-10

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chris_40

Does anybody have a schematic on how to pipe a gb 142 boiler no indirect heater just 4 zones with pumps all pumping away.I will be installing my first one in a week.

singh

The thing

about multiple zones and the GB is the RC10 should not be used. I think now you can use their outdoor reset, so That may not be an issue now. I have not seen the wiring diagrams for that. But the piping diagrams are in the application manual with the boiler. Good luck.

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John_82

You CAN use the RC-10.... RC-10 can be used in multiple zone applications. put the RC-10 in the zone that has the biggest heatloss. Wire that pump w/ the manifold pump. Use T-stats, pumps & a Argo box for the other zones, don't wire argo box to the boiler. These zones will be slaves to the constant circulation zone that is controlled via the RC-10. Or you can use the new AM-10 outdoor reset control, an argo box & t-stats. The AM-10 has a TT terminal to bring endswithes to, so you can bring the argo box back to it. It isn't constant circulation, but it is outdoor reset. Take your pick, they are both simple and effective!

singh

I guess

you can do it that way.
Make sure your heat emitters are all the same. For example, hydro-air on one zone, radiant on two other zones, baseboard on another, not a good application of the RC10. Or perhaps the highest heat loss zone is in the slab in the basement , do you put the rc10 there, what if you only want to keep that zone at lower temp than the others?? What if plates are used in one zone with wood, what if the other zone is tile, others have carpet. will all zones be comfortable, or is it possible the rc10 will reset to lower fluid temps, but other zones need higher temps to satisfy the t-stat. All zones are slave to Rc10. You get the picture.

Chris
why multiple pumps? tell us more about the application and heat emmitters etc..


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John_82

in a multi-temp radiant system, put the rc-10 in the zone w/ the highest water temp & use thermostatic "sparco" type mixing valves on all the other zones. If the RC-10 changes water temps for the hot zone, all the other zones will be covered too!! I think it's a cool way of doing things, and frankly I like it better than the new outdoor reset control. There are many possabilities, you can make it real simple or very exotic.

Joe@buderus_2

RC10

The RC10 can be used in multiplr zone systems, but as stated in other post and other zones would be "slaves" to the RC10. If there are different temperature zones and the RC10 is used, system water temperature and boiler firing may not satisfy all zones. The RC10 and the new AM10 cannot be used together.

singh

j

chances are if I sold a GB142 , and I needed some mixing valves, I would also include something like the i-series from taco. To put "dumb type" sparco on lower temps zones, is not my style. Oh sure I put them in a small zone, like a bathroom radiant add-on, but that's it.
I just can't take the chance that I'll get a call one cold night that some rooms are not comfortable, because RC10 in wrong spot or is satifsied but other rooms need more heat. That does not mean I don't use it always, I'm finishing up an install now, RC10 perfect for the job. I'll post a picture tomorrow.
My guess is that most guys will toss the indoor reset and use outdoor. It's the American way ; )
If your having success with your ways j, I wish you well.

d

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Brian

GB Piping

I don't have a drawing but here is a picture of one of my systems.I hope this will help.

Good Luck
Dobber

Ted_9

nice job singh, but where is the relief piping on the wilson GB142.

I guess you didnt get to it yet.

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Mad Dog_2

I'm with you Devan

The RC-10 has worked well only on certain applications. Mad Dog

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singh

Thanks.

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Joe@buderus_2

GB142

Nice picture of a neat, simple , by the book install. Thanks.