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newly installed central ac Djavdet 05-26-2007
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Posted by Noon-Air on May 27, 2007, 11:07 am

>> Whoever did the design is an idiot. Assuming that your design temp is 90
>> degrees, and not knowing what you design RH is, a correctly sized system
>> should be able to *MAINTAIN* 75F at 50% RH. Its not designed to bring the
>> house down to that at the design temp, but to maintain that temp at the
>> design temp. That means turn the system on at the thermostat, set it for
>> 75F, and leave it to do its job. Do not turn it off when you leave the
>> house, do not jack the controls around, do not expect the house to go
>> from
>> 90F down to 75F in 20 minutes...thats just not gonna happen, turning the
>> thermostat down further is not going to make the system work any harder,
>> just set the thermostat and let it be.
>
> I did run it for the day. did not turn it off and did not play with
> the control. as i said almost no effect. i mean i f i stay on outlet
> yeah it blows cold air but knowing how ac works in the office i'd say
> either air pressure isn't enough or it's not cold enough. i put
> termometer on outlet it showed 71F with 85F outside.. is that good?.

What was the temperature inside the house?? What temperature was the
thermostat set at??

>> FWIW, $4,000 had to be the lowest bidder and they put in the cheapest
>> equipment the installer could find. Care to post make/model/serial
>> numbers
>> to prove me wrong??- Hide quoted text -

still waiting on the equipment info....

> hey i am not trying to prove anyone wrong.. people in this group
> understand my posts wrong. all i'm trying to do is to gather some info
> since i'm not very experienced in this house stuff...

Then provide some info other than making it sound like your looking for
something to screw the contractor so you don't have to pay the bill.

> on the contract it says Trane XB 2.5
> are you saying that some of the trane models are so much better than
> others so makes sence discuss it with contractor? i think they would
> be happy to sell me more expensive unit but all i heard from them is
> that it's more expensive because of seer number.
> D




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Posted by Djavdet on May 27, 2007, 1:59 pm
>
> > I did run it for the day. did not turn it off and did not play with
> > the control. as i said almost no effect. i mean i f i stay on outlet
> > yeah it blows cold air but knowing how ac works in the office i'd say
> > either air pressure isn't enough or it's not cold enough. i put
> > termometer on outlet it showed 71F with 85F outside.. is that good?.
>
> What was the temperature inside the house?? What temperature was the
> thermostat set at??

i set termostat at 75

> >> FWIW, $4,000 had to be the lowest bidder and they put in the cheapest
> >> equipment the installer could find. Care to post make/model/serial
> >> numbers
> >> to prove me wrong??- Hide quoted text -
>
> still waiting on the equipment info....

i'm curious what are you trying to make out of it? what would the
numbers tell you?
anyway make is TRANE model is XB 2.5 as it says on the contract.
coil thing model is: 2txcb036bc3hcaa
condenser is 2ttb-svn01a-en and there is another number below it 18-
ac56d1-1
is this what you're looking for?

> > hey i am not trying to prove anyone wrong.. people in this group
> > understand my posts wrong. all i'm trying to do is to gather some info
> > since i'm not very experienced in this house stuff...
>
> Then provide some info other than making it sound like your looking for
> something to screw the contractor so you don't have to pay the bill.

well, if it does i can tell that it's not what i'm trying to do,
besides i already paid the bill. i want to understand if that stuff i
bought is capable to do what i want. the contractor said that it is
and i'm not seeing it. originally i thought that home central air
should be something similar to what i see in the office where it's
bigger and more expensive and at home it should be less expensive not
that big but doing something the same or very close. the reason i
started asking around to prove if it is what people get or not...yeah
instead i'm getting fingerpointed and laughed out.. heh, whatever..
D


Posted by Noon-Air on May 27, 2007, 2:20 pm

>>
>> > I did run it for the day. did not turn it off and did not play with
>> > the control. as i said almost no effect. i mean i f i stay on outlet
>> > yeah it blows cold air but knowing how ac works in the office i'd say
>> > either air pressure isn't enough or it's not cold enough. i put
>> > termometer on outlet it showed 71F with 85F outside.. is that good?.
>>
>> What was the temperature inside the house?? What temperature was the
>> thermostat set at??
>
> i set termostat at 75

If the thermostat is set for 75, and you have 71 degree air coming out of
the vents, what is the temperature inside of the house??
IF you have 75 degrees inside, the air coming out of the vents should be
somewhere in the neighborhood of 55 degrees. If you *DON"T* have this, then
call the installer back and tell him/her you don't think its running
correctly. Have them explain all this stuff you want to know, because we
can't *SEE* if through the computer screen. Have them explain what you got
and how its supposed to work and what to look for if its not running
correctly. If the guy they sent out can't do this, then tell them you want
the owner to come out and explain it.
BTW... just because you got a Trane, doesn't mean anything.... it all has to
do with the installation.

>> >> FWIW, $4,000 had to be the lowest bidder and they put in the cheapest
>> >> equipment the installer could find. Care to post make/model/serial
>> >> numbers
>> >> to prove me wrong??- Hide quoted text -
>>
>> still waiting on the equipment info....
>
> i'm curious what are you trying to make out of it? what would the
> numbers tell you?
> anyway make is TRANE model is XB 2.5 as it says on the contract.
> coil thing model is: 2txcb036bc3hcaa
> condenser is 2ttb-svn01a-en and there is another number below it 18-
> ac56d1-1
> is this what you're looking for?

>> > hey i am not trying to prove anyone wrong.. people in this group
>> > understand my posts wrong. all i'm trying to do is to gather some info
>> > since i'm not very experienced in this house stuff...
>>
>> Then provide some info other than making it sound like your looking for
>> something to screw the contractor so you don't have to pay the bill.
>
> well, if it does i can tell that it's not what i'm trying to do,
> besides i already paid the bill. i want to understand if that stuff i
> bought is capable to do what i want. the contractor said that it is
> and i'm not seeing it. originally i thought that home central air
> should be something similar to what i see in the office where it's
> bigger and more expensive and at home it should be less expensive not
> that big but doing something the same or very close. the reason i
> started asking around to prove if it is what people get or not...yeah
> instead i'm getting fingerpointed and laughed out.. heh, whatever..
> D
>



Posted by Djavdet on May 27, 2007, 2:39 pm
> >> What was the temperature inside the house?? What temperature was the
> >> thermostat set at??
>
> > i set termostat at 75
>
> If the thermostat is set for 75, and you have 71 degree air coming out of
> the vents, what is the temperature inside of the house??
> IF you have 75 degrees inside, the air coming out of the vents should be
> somewhere in the neighborhood of 55 degrees. If you *DON"T* have this, then

oh ok, here are some numbers, thanks. so the temperature should be
somewhat around 55? did you just subtract 20 from 75? just corious, or
there is some sort of table of temperatures?

> call the installer back and tell him/her you don't think its running
> correctly. Have them explain all this stuff you want to know, because we
> can't *SEE* if through the computer screen. Have them explain what you got
> and how its supposed to work and what to look for if its not running
> correctly. If the guy they sent out can't do this, then tell them you want
> the owner to come out and explain it.
> BTW... just because you got a Trane, doesn't mean anything.... it all has to
> do with the installation.

i guess i understand that part. i looked up what they did, it looks ok
to me. everything is sealed and coil is on top of the furnace. there
are no holes or some suspecious noise or sticking out stuff.. air is
stilling going through old duct system.. the only thing i can think of
is that condenser is not working properly..ie does not cool enough
coolant. is that possible?

D


Posted by Noon-Air on May 27, 2007, 3:25 pm

>> >> What was the temperature inside the house?? What temperature was the
>> >> thermostat set at??
>>
>> > i set termostat at 75
>>
>> If the thermostat is set for 75, and you have 71 degree air coming out of
>> the vents, what is the temperature inside of the house??
>> IF you have 75 degrees inside, the air coming out of the vents should be
>> somewhere in the neighborhood of 55 degrees. If you *DON"T* have this,
>> then
>
> oh ok, here are some numbers, thanks. so the temperature should be
> somewhat around 55? did you just subtract 20 from 75? just corious, or
> there is some sort of table of temperatures?

I am not here to teach air conditioning 101. Do some homework, then get back
to us. Start with basic electricity, then physics, thermodynamics,
pneumatics, mechanical engineering, and a little metalurgy.

>> call the installer back and tell him/her you don't think its running
>> correctly. Have them explain all this stuff you want to know, because we
>> can't *SEE* if through the computer screen. Have them explain what you
>> got
>> and how its supposed to work and what to look for if its not running
>> correctly. If the guy they sent out can't do this, then tell them you
>> want
>> the owner to come out and explain it.
>> BTW... just because you got a Trane, doesn't mean anything.... it all has
>> to
>> do with the installation.
>
> i guess i understand that part. i looked up what they did, it looks ok
> to me. everything is sealed and coil is on top of the furnace. there
> are no holes or some suspecious noise or sticking out stuff.. air is
> stilling going through old duct system.. the only thing i can think of
> is that condenser is not working properly..ie does not cool enough
> coolant. is that possible?

Looks don't mean anything... I have a customer that thought this was OK....
http://new.photos.yahoo.com/noon_air/album/576460762352202314

This is what it is supposed to look like
http://new.photos.yahoo.com/noon_air/album/576460762367797999

As far as the amount of refrigerant in the system, there is no way to tell
without taking the appropriate measurements to check superheat and
subcooling. Yes you can have too much refrigerant just as easy as not
enough.




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