Reply: Condo Trouble Shooting Cooling - All Original Posts Disappeared here
What is the temperature Spit of the outdoor condenser air discharge?
A 12-SEER outdoor condenser air temp split should normally be around
18/20 to 24-F heat rise split.
All I saw were temperature readingS, NO pressure readings.
We need Indoor Return Air Wet bulb or %/Humidity Readings
No refrigerant line temps, NO Superheat & Subcooling figures!
Review the trouble shooting Superheat & Subcooling and give hard copies
to the techs & engineers.
We are NOT there, therefore we have to know the airflow CFM, all
the Pressures. & temp figures to even guess at what is wrong.
How many supply diffusers are there?
If the ducts are too small and the diffuser's engineered for high
velocity and a long throw, it might feel like you are getting a lot more
airflow than is actually being delivered to the rooms. There could be an
airflow /ductwork problem.
It also could be too much airflow unit charge when condo was hot
resulting in a horribly overcharged system! Read my linked page:
Have someone come in with an (Alnor Balometer) - flow hood air CFM
quantity meter - that measures the actual CFM delivered from the outlet
of each diffuser!
Also, static pressures should be taken and compared to the blowers curve
graph or chart!
A lot of things can cause an unbalanced airflow heatload on the
evaporator coil's usually four or six circuits.
I think you are being tricked by mere high velocity out the diffusers
and the air will be cold but the Cubic Feet per Minute will NOT be
adequate to cool your condo, because air infiltration and the normal
building heat-gain rate will cause it to merely stay even.
- udarrell - Darrell
Air Conditioning\'s Affordable Path to the "Human Comfort Zone Goal"
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