Taco mixing valve question

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MarkW

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Apr 5, 2013
201
NE Ohio
I've got a 5000-2 valve on my dhw to mix my 150° down to 125. I installed it new about 3 months ago and has been mixing well until this week. This week the chilly showers began. I've since had to keep adjusting the temp up to keep dhw supply temps up. I also starts out with a 30 sec or so flow of excessively hot water.
It's installed per the supplied instructions. Any thoughts?
 
MarkW said:
I've got a 5000-2 valve on my dhw to mix my 150° down to 125. I installed it new about 3 months ago and has been mixing well until this week. This week the chilly showers began. I've since had to keep adjusting the temp up to keep dhw supply temps up. I also starts out with a 30 sec or so flow of excessively hot water.
It's installed per the supplied instructions. Any thoughts?
Click to expand...


Is it on a tank or tankless type heater? Is there a recirculation pump on the system? Improperly piped the pump will cause temperature creep. Pressure the same on the hot side as cold?
 
Ok, it was me not the Taco. I'm a complete bozo on this one. I have a wye connector to a garden hose that I use in my brewery washdown area. I rarely use the hot water but did last weekend, thereby introducing a short circuit between the hot and cold lines. Doh!;em
 
MarkW said:
Ok, it was me not the Taco. I'm a complete bozo on this one. I have a wye connector to a garden hose that I use in my brewery washdown area. I rarely use the hot water but did last weekend, thereby introducing a short circuit between the hot and cold lines. Doh!;em
Click to expand...
Nice catch.
 
Once I started turning the valve up to get some hot I was able to note the temp rise in the cold that wasn't noticeable prior.
 
I had the same problem on one I put in my daughters house after a year or so. Took it apart and found a chunk of wood stuck in the valve. Hmmm wonder where that came from?
Turns out her town still has log mains in use!
 
Wow
 
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