Should I Use A Bidirectional Filter Drier On My Mini Split Install? Forum
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filter drier question
serviced a payne gaspack today cleaned coils etc noticed someone installed a new evaporator gyre ask the customer she said last twelvemonth .. noticed a bi flow drier installed is this ok? I noticed the unit cutting on and off a couple times on starting time upward kinda like the depression or howdy press, switch cut it out but then ran fine and cooled afterward that is a bi flow drier ok to employ in a/c only ? could this crusade pressure bug? thank you
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I doubt thats your problem
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no cooling complaints pressures was ok and cooling fine merely curious ive always used a liquid line drier for ac only and bi flow for h/p just curious if this was ok?
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It's a bi flow...it tin can go both ways. What..are you stuck in the 90'southward?
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- Probably right, but just for the sake of argument, lets just say the filter was partially restricted because of previous exhaustion or poor service procedures or whatever. Since it's a bi-flow on a system that never reverses, the actual size of your drier is at present 8cu inches, you know those Sporlan bi-flows are basically 2 driers in the same crush with a check valve system. I would presume other brands are made in a similar fashion. So less filter media, way easier to clog up. That'due south the reason I wouldn't utilise information technology in a straight absurd. They're more expensive anyway, and you're only using half of it.
Originally Posted past Core_d 
I doubt thats your trouble
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So, in the interest of thoroughness, since you're asking the question, did you bank check the drier for a temp difference?
The great professors of the art are non allowed from the malignancy of affair and the eternal cussedness of inanimate objects.
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lol maybe 80s no just always stuck with putting what goes on what....
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no temp checks just pressure checks .....pressures were fine while running it the unit came on and off 3 times by the time I got the door off and gauges on everything was fine...simply on start upwardly on and off like a force per unit area switch issue didn't do it afterwards
- That would make me very concerned! Originally Posted past dun4sho
no temp checks simply force per unit area checks .....pressures were fine while running information technology the unit came on and off three times past the fourth dimension I got the door off and gauges on everything was fine...simply on start upward on and off like a pressure level switch upshot didn't do it after
- Where y'all irksome in getting the panel off? Curt cycling on start up is a problem. Originally Posted by dun4sho
no temp checks just pressure checks .....pressures were fine while running information technology the unit came on and off iii times by the time I got the door off and gauges on everything was fine...just on start up on and off like a pressure switch issue didn't exercise it afterwards
Filter/dryer is not an issue if no temp difference across is.
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Yes i was slow it ran fine for several infinitesimal went inside cutting it off then turned information technology back went through 5 min delay by the time information technology came on i was back outside and gauges on started upwardly fine no on and off just strange to me
- Somehow, I did not know that. Thanks. Originally Posted by CHAINIK
Probably right, but just for the sake of argument, lets just say the filter was partially restricted because of previous burnout or poor service procedures or whatever. Since it's a bi-flow on a organisation that never reverses,
When the compressor has no sump heater, a cold arrangement volition be effectively short of active refrigerant until the liquid refrigerant in or under the compressor oil is vaporized. That is a normal status seen by anyone who has observed the startup operation of a domestic refrigerator or freezer. Originally Posted by dun4sho I noticed the unit cut on and off a couple times on starting time upward kinda similar the low or hi press, switch cutting it out but then ran fine and cooled afterward that
"I accept never let my schooling interfere with my educational activity."
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Does this system have a High pressure switch? I've had a few carrier (Payne uses same pressure switches IIRC) units, where the HPS was faulty. On start-up just the vibration of the compressor would cause the switch to momentarily open. A digital meter volition non prove this as the update time is irksome. I had to break out the old analog meter to make up one's mind the cause of failed contactors, which wound upward being the HPS. Good luck on the gremlin hunting.
- That isn't really how they work. Originally Posted by CHAINIK
Probably right, simply simply for the sake of argument, lets but say the filter was partially restricted because of previous burnout or poor service procedures or whatsoever. Since it'south a bi-flow on a system that never reverses, the actual size of your drier is now 8cu inches, you know those Sporlan bi-flows are basically ii driers in the same beat with a bank check valve arrangement. I would assume other brands are fabricated in a similar manner. So less filter media, manner easier to clog up. That's the reason I wouldn't apply it in a straight cool. They're more expensive anyway, and yous're merely using half of it.
So, in the involvement of thoroughness, since you're asking the question, did you check the drier for a temp departure?
Bi-Period filter take a single cadre, and employ all of it in both menstruum directions.
The refrigerant flow through the cadre is in the aforementioned direction in both modes.Here is a decent illustration of how the flow through them works in each management.
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- This may assist explain as well.SD-111_CA Rev Estrus Pump Install72015.pdf Originally Posted by mark beiser
That isn't really how they work.
Bi-Flow filter have a single core, and use all of information technology in both flow directions.
The refrigerant flow through the core is in the aforementioned management in both modes.Hither is a decent analogy of how the flow through them works in each direction.
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Thanks, I guess that I had forgotten how the bi-flow drier worked and did not think to inquiry it.
"I have never allow my schooling interfere with my education."
Marker Twain
NEVER STOP LEARNING.
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That is exactly the diagram I was remembering, and manifestly not too well. I stand corrected. Either manner, withal not going to use a bi-menses on a system that doesn't require it.
The great professors of the art are non immune from the malignancy of affair and the eternal cussedness of inanimate objects.
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- IDK. I've blown through heatpump dryers that were definitely more than plugged in one direction vs. the other. Originally Posted by marking beiser
That isn't actually how they work.
Bi-Period filter accept a unmarried core, and use all of information technology in both period directions.
The refrigerant flow through the core is in the same direction in both modes.Here is a decent analogy of how the flow through them works in each management.
- Well, considering bi-menstruation filter driers can exist up to double the cost, that is entirely sensible. Originally Posted by CHAINIK
That is exactly the diagram I was remembering, and evidently non besides well. I stand up corrected. Either style, notwithstanding not going to use a bi-flow on a system that doesn't crave it.
If you are on a task, and discover that y'all only take a bi-flow, information technology isn't worth pulling off the job to go get a regular drier though.
Possibly a bank check valve took a little more pressure to push open up in one direction, or more likely, blowing through it didn't provide enough flow to close a cheque valve, and then seemed freer flowing. Originally Posted by KB Cool IDK. I've blown through heatpump dryers that were definitely more than plugged in one direction vs. the other.
Because the refrigerant flow through the actual core is e'er from the outside of the core to the heart of it, it is impossible for the cadre to exist more plugged in i direction than the other.
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Talking about driers..what could or would necessarily happen if a drier was installed in the reverse direction of an straight AC arrangement? The one I noticed is on a 2 yr former unit and hasn't been opened upwards or repaired on since installed.
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- Not a lot, in a make clean organisation, moisture removal not effected but more self generated debris from the core or beads would pass through as the filter role is at present before. Originally Posted by AverageHvacGuy
Talking about driers..what could or would necessarily happen if a drier was installed in the opposite direction of an direct AC system? The 1 I noticed is on a two year quondam unit and hasn't been opened upwards or repaired on since installed.
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Also a solid cadre way now has less holding surface.
In a clean up awarding you take a shortened life.On dewdrop driers there is a retaining screen in the incorrect direction.
Almost damage is to the installer....
Terminal edited by skwoodwiva2; 05-13-2017 at 07:36 AM.
Should I Use A Bidirectional Filter Drier On My Mini Split Install? Forum,
Source: https://hvac-talk.com/vbb/threads/2164421-filter-drier-question
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