Mixing Valve

Eileen Olive

I must admit it is rather confusing. I have checked several sites, Honeywell's and a few supply houses' and the #s seem right. But this box is clearly marked HEATING ONLY, NOT FOR POTABLE WATER and so are the instructinos inside. AM101R-UT-1 I don't get it. But I will call Honeywell first thing Monday. The only noticable difference is it has a black handle (and it too states "Caution Heating Only."

Eileen Olive

Mixing Valve for DHW

Went to get Taco Mixing Valve (5003) for use at indirect hot water tank, but they sold me a Honeywell (AM101R-UT-1) saying it was even better (they are not a Taco distributer). Nice I thought, untill I got it home and read that it is "Not for potable usage."

Ok, it must go back. But why is it not for potable? I just HAVE to ask.

Charlie from wmass

http://customer.honeywell.com/honeywell/ProductInfo.aspx/AM101R-UT-1 Here is the specs from honeywell. I say it is a good valve but you can read the description yourself and decide.

bob young

use a holby

holby & case closed.

tccoggs_2

I think the only difference is the range, the DHW has a lower limit, maybe 140, where the heating model can go to 180.

kpc_52

you are fine.....

the omly reason it is listed as non potable is the temp rating of 180F.... I have one on mine and has worked well for 4 years.....

oil-2-4-6-gas

Holby , i've never seen a Holby under 1-1/4

bob young

1/2 \" TO 4 \"

www.holby.com/ BEST YOU CAN BUY.

oil-2-4-6-gas

i've been working on and rebuilding Holbys' and their X valves for a long time -1-1/4" up to 4" --never seen small ones though

kpc_52

lawyers make....

them put that on there...as long as you keep the temp down to 120-130 it is fine.... or just take it back and get the lower temp range model. kpc

Eileen Olive

Thanks

I guess you're right, and I intend to set the indirect tank at 140* anyway, which I believe the TT-110 alows me to do. Sorry, but the box totally threw me an unexpected curve ball.

heatguy

maybe lead content ?

maybe the valve has higher lead content in the brass?

Eileen Olive

Never thought of that

But I will check. I e-mailed Honeywell over the weekend, but they never responded . . . .

hot_rod

It may be the ASSE listings on the valve

point of use, point of distribution, scald guard, etc. 1016, 1069, and the new 1070 listing.

Here is a good link to the various standards and the differences.

www.hgexperts.com/article.asp?id=5135

And some Honeywell specific info

www.forwardthinking.honeywell.com/related_links/water/mixing_valve/sell/63_9705.pdf

hr

Eileen Olive

Ok, finally spoke to Honeywell

They say the AM101R does not have check valves in the body. I don't know . . . so I exchanged it for the AM101C-1, for use with potable water. Oddly though, when I switched boxes I noticed a big difference in weight. This one has NPT female ends, unlike the other with nice unions and metal gaskets. Not that that makes a difference. But one would think the heavy unit with threads and unions would be considerably more expensive, right. $1.25 less. But that's the end of that story. No excess lead in the brass and not, according to Honeywell, the 180* temp rating. Thanks guys, it was a learning experience,

Charlie from wmass

Check valves darn I should have known that one. We used to have to pipe in chack valves before they were stocked that way around here. It is nice having the unions too.

Eileen Olive

Yes, Charlie

For the extra buck, I really wanted to hang onto those unions. Had a nice solid feel to it, too. After hefting the one I returned, this one is feeling kinda skimpy. Oh well, it goes in in the morning. Do you have any prefrence for piping one of these into an indiret HW tank? How much of a heat trap? Inverted? How far from the hot water discharge on the tank? Just asking. Everyone has their own preference. I;m always looking for better ways to do things.

Charlie from wmass

The ones we have here have unions and check valves I will need to find the model number. I am not aware of them needing a heat trap unlike the older style tempering valves. the checks take care of that. I also keep it close but convient to the indirect. No point in running 2 pipes, hot and cold, far when it can be reduced to the one outlet pipe.

Eileen Olive

Scratch all that

Now Honeywell is telling me that ONLY the mixing valves with the unions have check valves internal. I should have avoided all this nonsense at first sight and gone with the Taco. Live and learn.

bob young

always separate components

holby w/ heatsink.....no check needed no unions needed will outlive you can be rebuilt forever

Charlie from wmass

EJN it is a good valve by my experience just seems a supply house glitch. I find I need to know what I need rather than ask them what would work as too many people do not listen when other people emmit sounds from their vocal devices.

Here is all the answers ( http://customer.honeywell.com/techlit/pdf/95c-00000s/SD_IS_150.pdf) The am 100c 1 should be the 1/2" choice.

Rob Blair

Hey Bob, I take it you like Holby's

Rob

bob young

jewelry

yeah Rob , , i am hooked on Holby . i consider it a piece of jewelry. try it , you will like it ! precicion & reliablity

Eileen Olive

Thanks Charlie

Yes, it was the supply house . . . and me. I asked for a Taco, but they said they are not Taco distributors. But they have plenty of Honeywells, and they are about $25 cheeper. It looked as good, nice and solid, but then the difficulties started. I should have driven down the road to the other supply house. Oh well.

Joe Mattiello

The Taco 5000 series is not a 1016 valve either, or comply with the ASSE code. For a complete listing of valves that comply visit the ASSE website. Hopefully, this helps you.