To TEV or not to TEV?

Posted by Steve on February 26, 2009, 9:15 pm

>>> A start kit on a scroll?? Come on Darrell.

>>He's right.....

> Ok, so are we talking about one of those 2 wire clip on ones or are
> you talking about a real start kit with a start capacitor and
> potential relay? Even still, I havent seen any scrolls with them but I
> can manage a real start kit over those clip ons that do nothing but
> melt and make a mess in the control panel.
> Bubba

Actual start cap and potential relay
I'll take a pic tomorrow and e-mail it to you

Posted by Bubba on February 27, 2009, 7:01 am

wrote:

>>>> A start kit on a scroll?? Come on Darrell.
>>>He's right.....

>> Ok, so are we talking about one of those 2 wire clip on ones or are
>> you talking about a real start kit with a start capacitor and
>> potential relay? Even still, I havent seen any scrolls with them but I
>> can manage a real start kit over those clip ons that do nothing but
>> melt and make a mess in the control panel.
>> Bubba

>Actual start cap and potential relay
>I'll take a pic tomorrow and e-mail it to you

STeve,
No need to take a pic. I believe you. I just havent seen them on any
equipment around here yet.
Bubba

Posted by Jean on February 22, 2009, 8:23 pm

On Sun, 22 Feb 2009 19:43:13 -0500, "Old and Grunpy"

>Get your self good tech. something is smelling there

>> What are your thoughts on adding TEV's to a 2 Ton, A410 heat pump?
>> If my current situation requires a complete pump out, purge and

>Whay?

That was a worst case scenario from HVAC tech. Unit was factory
charged with small extra for line set last Nov.

It ran quite quiet for several months but is now making a lot of noise
at startup and during defrost. It may even be slugging according to
HVAC guy.

>> re-install of refrigerant, would it be advantageous to install TEV's
>> to replace pistons?

>What pistons?

0.057 piston valve kit that was supposed to be installed on indoor
coil. New HVAC says nut *might* have been over tightened and piston
not operating correctly.

If I remember correctly, these are current values after 20 minutes
operation:
Hi PR 410/ Lo PR 96 158 F discharge @ 40 ambient.

>> My HVAC tech says it is half a dozen of one and six of the other
>> unless the culprit is one of the existing valves.

>What was problem at start with?

None. Unit ran quiet and heating was great for several months. It just
started to make a lot of noise in the last few weeks and seems to be
getting worse day by day. I've locked it out for now until HVAC tech
has a chance to diagnose problem.

>> He says it helps under certain circumstances but also adds one more
>> thing that could go wrong in the future. He said a correctly sized and
>> installed unit should not absolutely require them.

>to replace or install thermal expansion valve (TXV) half day work $500.00
>plus gas and travel expanses mileage and tolls.

I'm looking at other work being done. I'm expecting him for at least a
half days work as it stands. I found out he lives close by when he
came by for an initial basic check and consultation. (Yes - he was
paid well for this. I expect to pay good for good work)

>> The extra cost at this time would be about $200 for valves and hard
>> start capacitor.
>> Any comments on TEV's vis-a-vis A410?

>TEV=(Thermal electronic valve) which?

TEV = Thermal Expansion Valve - some call them TXV's. I don't know
anything about "electronic" ones.

I've read in various places on the internet that R410 units should
have TEV/TXV's. Others say not important. I'm curious to know if it is
worth while to take this opportunity (should that be the case) to
install them.

Posted by geothermaljones on February 22, 2009, 11:38 pm

I'd say any $200.00 going to a decent HVAC contractor is well spent...
You might consider a totally new system if you really want to stimulate the
economy...
Speaking of stimulus, it would seem you sure have a lot of problems
lately...
How many homes do you own?
Are you sure you really need a tech, or are these guys listed in the yellow
pages as the HVAC Escorts?
(I won't even mention tool boxes & paying extra for the wrong tools, etc...)

If I were you, I'd wait for the King to weigh in before I made a final
decision.
Seems the two of you ought to just get a room.
When the wife & I argue like that it usually ends memorably...
As they say in the Navy, "Fuck Fight, or Shut Off the Light"

geothermaljones

p.s. Nick Pine?
Hint, Villanova,
Now who's Abby?
And is he normally on an island?

> What are your thoughts on adding TEV's to a 2 Ton, A410 heat pump?
> If my current situation requires a complete pump out, purge and
> re-install of refrigerant, would it be advantageous to install TEV's
> to replace pistons?
> My HVAC tech says it is half a dozen of one and six of the other
> unless the culprit is one of the existing valves.
> He says it helps under certain circumstances but also adds one more
> thing that could go wrong in the future. He said a correctly sized and
> installed unit should not absolutely require them.
> The extra cost at this time would be about $200 for valves and hard
> start capacitor.
> Any comments on TEV's vis-a-vis A410?

Posted by Abby Normal on March 15, 2009, 10:41 am

Yah mon , 'im still down on de isalnd

wrote:

> Now who's Abby?
> And is he normally on an island?

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