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I have two Luxaire systems and two technicians with different opinions about the proper orifice for the a/c unit. We are in Central Tx where temps exceed 100. One says the unit comes from the factory with the proper orifice installed and the other says that we need a (larger?) orifice for the 13 seer unit. The unit just installed is a TCJD36S41S3A, 3 ton unit. The tech did not install the 565 orifice that was in a baggy with the paperwork. Who is correct? The unit froze up two days after install. Don't know yet if it's a leak, not enough freon from the factory, or an orifice problem. Please help!
Optional Information: Brand: Luxaire Type of HVAC: Air Conditioner Already Tried: First unit debated had larger orifice installed when cooling temp not low enough. Temps now low enough and steady.
Hello there! I'm Norman but you can call me Norm. Let's see what I can do to get you some answers today. I'm ready to get started whenever you are.
I have a basic knowledge but not a tech. Trying to determine if either tech knows the system/problem.
As with any fixed meetering device the orifice that comes with the outdoor condensing unit is the proper one. Coils can be matched with multiple condensers so if one came in the coil there is a chance it's right even though its probably a small chance
My screen shows that you have stepped out at least 7 times and entered back in. Are you here or not?
as for the refrigerant the installing tech always has to check the charge. It's very rare that the charge is exactly right.
I am standing by should you have further questions.
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If the condenser and the coil both use orifices, how do you determine (match) them if the paperwork does not show what they come with? I know that they are variable but the issue is how do you match them.
I'm sorry, my tablet PC was screwing up royally.
As for the orifices the condenser comes with an orifice that is to be installed in the coil, there is only one.
If the coil has an orifice in it already when new, that orifice should be disposed of and the one that came with the condensing unit goes in its place.
Let me see if I can pull the tubular data on the system and I can tell you the exact orifice required with your system.
Co you have the model number for the indoor coil?
Do you have, sorry typo
That sounds like a definitive answer and may be the resolution to the problem. Thank you. The coil tag is illegible. It is an Allstyle slab-type 3 ton coil.
Actually it doesn't matter the correct orifice is a 0.065
Received. I will be talking to the techs about this issue. Thank you.
I will say this. If the coil is not an ARI match with the outdoor condenser you may never find a definite resolution. ARI is the standard of testing for all hvac systems and they certify the system is a match, test the efficiency and the capacity.
I never sell a new outdoor unit that is to be installed on a old coil that doesn't have a certified match.
Without a match you can not tell the customer the system will get a certain efficiency or capacity.
Condenser and coil are both new but not same brand due to availability/time. They are supposed to be compatible and matched.
I would ask to see the ARI certificate
It may be a match but better safe than sorry
But to summarize your question. Yes the outdoor piston is the one to be used and it should be a 0.065
Does that answer your questions for tonight?
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