Repipe Thoughts?

tgbrew

I’m posting this as a new thread because I think it got lost when I did it as a comment on the old string. Apologies for being annoying. I would love to get an opinion before I start buying fittings and want to get this going before autumn sets in.

This is a 2.5" header and I didn't include the unions, but there will definitely be a few scattered about. Does anything stand out to anyone who has done this? Design look OK?

gennady

I would change as noted on sketch and this is how we do it.

gennady

lost one arrow. you must have at least 3 pipe diameters before and after take off tee. install isolation valves on return and supply. make provisions for boiler blow downs and return line blow down.
after connection of second steam supply to header increase header size as mentioned in Hatterasguy post.

BobC

Spend just a tiny bit more and increase the equalizer piping from 1-1/4 to 1-1/2".

Bob

tgbrew

Thanks for the details! Indeed I drew it badly and plan for the equalizer to be 2" with 1.25" for the Hartford loop to match the return.

I tried to have the drawings match the design recommendation diagram from the manual. Their details didn't have those 3" spacings around the second riser and recommended a 2.5" header for this size boiler (187k btu). I just want to make sure it is OK to increase the header size.

Many thanks!!

tgbrew

Ok- here are the changes. I think this is it, so definitely scream if something looks weird. I might not do the odd 90-degree turn for the second riser to get to the header and just try to fit a diagonal.
Thanks and I appreciate the help!

gennady

minimum requiremts

tgbrew

Minimum for what? I'm exceeding the Utica requirements for riser height, header size and spacings. What am I missing? I don't want to have to redo this...
Thanks!

tgbrew

Nice. Many thanks!! I think I'm going to go with an 18" diagonal on the second riser, which would move the connection to the header closer to the first riser as you suggest. Thanks to everyone again. I'll post a pic I get these old pipes out and the new ones up.

tgbrew

As promised - a pic of the completed project. Thanks everyone!

Dave0176

Very nice piping job, I'm sure you will much happier this winter.

hvacfreak2

It looks good , have you fired it yet ? I noticed that a few posts above someone said to not use a reducing 90 at the end .
I was wondering how critical that area is , the last 90 down to the equalizer ? Can a tee be used here ( using the branch as the 90 and plug at the end ) for the purpose of cleaning or chemical fill ?

ChrisJ

hvacfreak2 said:

It looks good , have you fired it yet ? I noticed that a few posts above someone said to not use a reducing 90 at the end .
I was wondering how critical that area is , the last 90 down to the equalizer ? Can a tee be used here ( using the branch as the 90 and plug at the end ) for the purpose of cleaning or chemical fill ?

I used a 3" to 2" reducing 90 here and don't know why it would be a problem as long as it's pointed straight down.

A tee should work fine as well. The objective is to drain the header into the equalizer as fast and completely as possible.

KC_Jones

As far as I know a reducing elbow pointed straight down is not a problem, it's when people lay them on their side that it becomes problematic in that it can hold water.

RobG

I haven't re-read the post but do you only have one main?

Fred

It looks Great!

Dave0176

Here is how I prefer to do it, just my preference.

EzzyT

Very nice piping job neat and clean work

tgbrew

Thanks everyone. Yes, we have fired and all seems well. No issues but not sure if it is helping our balance issue. The previous piping was pretty ridiculous.
We have one main and don't think the reducing tee is an issue. Not sure how else I would have done since I wanted the big header.