Home Page link

New American Standard not holding temperature

Home| Search | About
Login Password
Register Now! Lost Password?

HVAC Discussions - Heating, ventilation and air conditioning. 

Page 1 of 2       1 2 > last >> Bookmark this page:  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
New American Standard not holding temperature noonehere 08-13-2007
If you were  Registered and logged in, you could reply and use other advanced thread options
Posted by on August 13, 2007, 4:27 pm
I just got 2 new HVAC systems installed (upstairs and downstairs), and
I noticed during the day, the downstairs unit doesn't want to hold the
temperature. The other day, I had it set for 78, and it crept up to
82 (starting around 3PM), and didn't get back below 80 until 10PM.

Now it's hot here in Atlanta for the past few days, but these are new
units (2.0 ton downstairs and 2.5 upstairs). The upstairs unit seems
to maintain the temperature without a problem.

Today I set both units at 75 (cooler than usual - just a test to see
if they hold). The upstairs is still 75, the downstairs is 78.

Also, in the evenings (with the downstairs unit constantly running) I
sometimes feel a little warm (not terrible) sitting in the den, but
then feel a burst of cool air (like the unit just clicked on).

Any ideas what could be going on? Could the weather (97 outside right
now) be the culprit? (Though my upstairs maintains without a problem)
Or the thermostat? Or bad unit?

The installer says he is going to try some "expansion valve" at the
coils - does this make sense to anyone?

Thanks


Posted by on August 13, 2007, 4:39 pm
On Mon, 13 Aug 2007 13:27:55 -0700, noonehere@mail.com wrote:

>I just got 2 new HVAC systems installed (upstairs and downstairs), and
>I noticed during the day, the downstairs unit doesn't want to hold the
>temperature. The other day, I had it set for 78, and it crept up to
>82 (starting around 3PM), and didn't get back below 80 until 10PM.
>
>Now it's hot here in Atlanta for the past few days, but these are new
>units (2.0 ton downstairs and 2.5 upstairs). The upstairs unit seems
>to maintain the temperature without a problem.
>
>Today I set both units at 75 (cooler than usual - just a test to see
>if they hold). The upstairs is still 75, the downstairs is 78.
>
>Also, in the evenings (with the downstairs unit constantly running) I
>sometimes feel a little warm (not terrible) sitting in the den, but
>then feel a burst of cool air (like the unit just clicked on).
>
>Any ideas what could be going on? Could the weather (97 outside right
>now) be the culprit? (Though my upstairs maintains without a problem)
>Or the thermostat? Or bad unit?
>
>The installer says he is going to try some "expansion valve" at the
>coils - does this make sense to anyone?
>
>Thanks

        No.


--
Click here every day to feed an animal that needs you today !!!
http://www.theanimalrescuesite.com/

Paul ( pjm @ pobox . com ) - remove spaces to email me
'Some days, it's just not worth chewing through the restraints.'
'With sufficient thrust, pigs fly just fine.'
HVAC/R program for Palm PDA's
Free demo now available online http://pmilligan.net/palm/

Posted by udarrell on August 13, 2007, 5:06 pm
noonehere@mail.com wrote:

>I just got 2 new HVAC systems installed (upstairs and downstairs), and
>I noticed during the day, the downstairs unit doesn't want to hold the
>temperature. The other day, I had it set for 78, and it crept up to
>82 (starting around 3PM), and didn't get back below 80 until 10PM.
>
>Now it's hot here in Atlanta for the past few days, but these are new
>units (2.0 ton downstairs and 2.5 upstairs). The upstairs unit seems
>to maintain the temperature without a problem.
>
>Today I set both units at 75 (cooler than usual - just a test to see
>if they hold). The upstairs is still 75, the downstairs is 78.
>
>Also, in the evenings (with the downstairs unit constantly running) I
>sometimes feel a little warm (not terrible) sitting in the den, but
>then feel a burst of cool air (like the unit just clicked on).
>
>Any ideas what could be going on? Could the weather (97 outside right
>now) be the culprit? (Though my upstairs maintains without a problem)
>Or the thermostat? Or bad unit?
>
>The installer says he is going to try some "expansion valve" at the
>coils - does this make sense to anyone? Thanks
>
>
This is a reasoned guess, ha.
The downstairs unit id not working properly, which could be for many
reasons.

If he is installing TXV metering devices on the E-Coils, that's what
they should have to begin with.
Do a little reading & thinking, also take some temps indoors & outdoors
at the condenser.
Also, get a percent humidity gauge.

Here are two of the page links:
First the Ductwork Design & functioning -
http://www.udarrell.com/proper_cfm_btuh_duct_sizing_air_conditioning_systems.html


After the ductwork & airflow is correct -
http://www.udarrell.com/ac-trouble-shooting-superheat-subcooling.html
udarrell

--
WISDOM PRINCIPLE DIRECTED EMPOWERMENT COMMUNICATIONS -
THE REAL POLITICAL ISSUES and WISDOM BASED PEOPLE EMPOWERMENT

http://www.udarrell.com/

http://www.udarrell.com/my_pages2.htm
(* My Airconditioning Links, Hunting Shooting, Angus Cattle, etc.)

http://www.udarrell.com/principled_adjudication_disputes_administration_justice.html

http://www.udarrell.com/recognizing_real_enemies.html

http://jesuschristsavior.net/Beatitudes.html

http://www.antiwar.com/ ***

Reality Is Not An Easy Thing To Be Confronted With, or to Accept!

Posted by Zephyr on August 14, 2007, 12:10 am
What is a [humidity gauge?]

Could you mean a sling psychrometer?

Zyp

> noonehere@mail.com wrote:
>
>>I just got 2 new HVAC systems installed (upstairs and downstairs), and
>>I noticed during the day, the downstairs unit doesn't want to hold the
>>temperature. The other day, I had it set for 78, and it crept up to
>>82 (starting around 3PM), and didn't get back below 80 until 10PM.
>>
>>Now it's hot here in Atlanta for the past few days, but these are new
>>units (2.0 ton downstairs and 2.5 upstairs). The upstairs unit seems
>>to maintain the temperature without a problem.
>>
>>Today I set both units at 75 (cooler than usual - just a test to see
>>if they hold). The upstairs is still 75, the downstairs is 78.
>>
>>Also, in the evenings (with the downstairs unit constantly running) I
>>sometimes feel a little warm (not terrible) sitting in the den, but
>>then feel a burst of cool air (like the unit just clicked on).
>>
>>Any ideas what could be going on? Could the weather (97 outside right
>>now) be the culprit? (Though my upstairs maintains without a problem)
>>Or the thermostat? Or bad unit?
>>
>>The installer says he is going to try some "expansion valve" at the
>>coils - does this make sense to anyone? Thanks
>>
> This is a reasoned guess, ha.
> The downstairs unit id not working properly, which could be for many
> reasons.
>
> If he is installing TXV metering devices on the E-Coils, that's what they
> should have to begin with.
> Do a little reading & thinking, also take some temps indoors & outdoors at
> the condenser.
> Also, get a percent humidity gauge.
>
> Here are two of the page links:
> First the Ductwork Design & functioning -
>
http://www.udarrell.com/proper_cfm_btuh_duct_sizing_air_conditioning_systems.html
>
> After the ductwork & airflow is correct -
> http://www.udarrell.com/ac-trouble-shooting-superheat-subcooling.html
> udarrell
>
> --
> WISDOM PRINCIPLE DIRECTED EMPOWERMENT COMMUNICATIONS - THE REAL POLITICAL
> ISSUES and WISDOM BASED PEOPLE EMPOWERMENT
>
> http://www.udarrell.com/
> http://www.udarrell.com/my_pages2.htm (* My Airconditioning Links, Hunting
> Shooting, Angus Cattle, etc.)
>
>
http://www.udarrell.com/principled_adjudication_disputes_administration_justice.html
>
> http://www.udarrell.com/recognizing_real_enemies.html
>
> http://jesuschristsavior.net/Beatitudes.html
> http://www.antiwar.com/ ***
>
> Reality Is Not An Easy Thing To Be Confronted With, or to Accept!



Posted by udarrell on August 14, 2007, 9:31 am
Zephyr wrote:

>What is a [humidity gauge?]
>Could you mean a sling psychrometer?
>Zyp
>
>
>
Zyp, you know what it is, the proper name is hygrometer which measures
the absolute or in this case the Relative Humidity in the air at that
temperature.
I used a Bacharach sling psychrometer to measure the Wet Bulb
temperature drop from the Dry Bulb temp, which provided me with much
needed info including the Relative Humidity. I figured the average
person would better understand what a Relative Humidity gauge was,
rather than using its technical name.
http://www.udarrell.com/air-conditioning-contractors-seer-eer-sensible-latent-heat.html

udarrell

>>noonehere@mail.com wrote:
>>
>>
>>
>>>I just got 2 new HVAC systems installed (upstairs and downstairs), and
>>>I noticed during the day, the downstairs unit doesn't want to hold the
>>>temperature. The other day, I had it set for 78, and it crept up to
>>>82 (starting around 3PM), and didn't get back below 80 until 10PM.
>>>
>>>Now it's hot here in Atlanta for the past few days, but these are new
>>>units (2.0 ton downstairs and 2.5 upstairs). The upstairs unit seems
>>>to maintain the temperature without a problem.
>>>
>>>Today I set both units at 75 (cooler than usual - just a test to see
>>>if they hold). The upstairs is still 75, the downstairs is 78.
>>>
>>>Also, in the evenings (with the downstairs unit constantly running) I
>>>sometimes feel a little warm (not terrible) sitting in the den, but
>>>then feel a burst of cool air (like the unit just clicked on).
>>>
>>>Any ideas what could be going on? Could the weather (97 outside right
>>>now) be the culprit? (Though my upstairs maintains without a problem)
>>>Or the thermostat? Or bad unit?
>>>
>>>The installer says he is going to try some "expansion valve" at the
>>>coils - does this make sense to anyone? Thanks
>>>
>>>
>>>
>>This is a reasoned guess, ha.
>>The downstairs unit is not working properly, which could be for many
>>reasons.
>>
>>If he is installing TXV metering devices on the E-Coils, that's what they
>>should have to begin with.
>>Do a little reading & thinking, also take some temps indoors & outdoors at
>>the condenser.
>>Also, get a percent humidity gauge, (an hygrometer).
>>
>>Here are two of the page links:
>>First the Ductwork Design & functioning -
>>http://www.udarrell.com/proper_cfm_btuh_duct_sizing_air_conditioning_systems.html
>>
>>After the ductwork & airflow is correct -
>>http://www.udarrell.com/ac-trouble-shooting-superheat-subcooling.html
>>udarrell
>>
>>--
>>WISDOM PRINCIPLE DIRECTED EMPOWERMENT COMMUNICATIONS - THE REAL POLITICAL
>>ISSUES and WISDOM BASED PEOPLE EMPOWERMENT
>>
>>http://www.udarrell.com/
>>http://www.udarrell.com/my_pages2.htm (* My Airconditioning Links, Hunting
>>Shooting, Angus Cattle, etc.)
>>
>>http://www.udarrell.com/principled_adjudication_disputes_administration_justice.html
>>
>>http://www.udarrell.com/recognizing_real_enemies.html
>>
>>http://jesuschristsavior.net/Beatitudes.html
>>http://www.antiwar.com/ ***
>>
>>Reality Is Not An Easy Thing To Be Confronted With, or to Accept!
>>
>>


--
WISDOM PRINCIPLE DIRECTED EMPOWERMENT COMMUNICATIONS -
THE REAL POLITICAL ISSUES and WISDOM BASED PEOPLE EMPOWERMENT

http://www.udarrell.com/

http://www.udarrell.com/my_pages2.htm
(My Airconditioning Links, Hunting Shooting, Angus Cattle, etc.)

http://www.udarrell.com/principled_adjudication_disputes_administration_justice.html

http://www.udarrell.com/recognizing_real_enemies.html

http://jesuschristsavior.net/Beatitudes.html

http://www.antiwar.com/ ***

Reality Is Not An Easy Thing To Be Confronted With, or to Accept!

Page 1 of 2       1 2 > last >>
Similar ThreadsPosted
American Standard or Trane December 11, 2007, 11:08 am
American Standard Air Handlers December 11, 2007, 11:11 am
Bryant vs. American Standard opinions August 10, 2006, 2:36 am
Trane XB13=American Standard Allegiance 13 June 5, 2007, 10:13 am
Replacement cost for an American Standard (Trane ?) coil September 10, 2006, 12:50 pm
If you have American Express December 30, 2006, 10:10 am
Goodman sets the standard May 11, 2007, 8:45 pm
standard atmospheric profile parameters? September 3, 2007, 8:49 pm
B vent compatible with standard vent duct? April 13, 2007, 5:08 pm
Discharge temperature August 11, 2006, 11:39 pm

Contact Us | Privacy Policy

XML SitemapXML Sitemap