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Posted by udarrell on February 7, 2007, 11:51 am
gofish@gonefishin.net wrote:
>
>>Does anybody have or know where I could get a static pressure drop of a
>>Rheem coil model # RCBA-3765GG17? I have to replace a botched up duct
>>system. Asking the local Rheem or Ruud distributor for this info. got me
>>know where because it is a coil older than 10 years. Plus they are not used
>>to these type questions because nobody knows how to size duct work properly
>>around here. Thanks in advance.
>>
>email Steve @ Noon-Air. He checks email while on his road trip,
>include your ph number & he'll probably call ya.
>Or grab your magnehelic and take a reading on each side of the
>coil.....factor in a few hundred's for a wet coil and be good to
>go.....
>
Since it is NOT a new coil forget the initial static drop & follow
gofish's advice!
Also, how the coil was installed can add considerable back pressure &
reduce the velocity fps force & therefore the airflow through the coil.
With regard to oil furnaces, the above & below can destroy airflow CFM
even if the rest of the ductwork is sized correctly.
Test the Static pressures & velocity flow rate!
http://www.udarrell.com/external_static_pressure_readings.html
http://www.udarrell.com/oil_furnace_heating.html
http://www.udarrell.com/proper_cfm_btuh_duct_sizing_air_conditioning_systems.html
- udarrell
--
WISDOM PRINCIPLED EMPOWERMENT COMMUNICATIONS -
THE REAL POLITICAL ISSUES and PEOPLE EMPOWERMENT
http://www.udarrell.com/
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> Rheem coil model # RCBA-3765GG17? I have to replace a botched up duct
> system. Asking the local Rheem or Ruud distributor for this info. got me
> know where because it is a coil older than 10 years. Plus they are not