ReplyBecause it sure seems to me that both would do the opposite of your claimed intention.
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Originally Posted by bubbahotemp
Regular Guest
Been in the biz for 10+ years, I am installing a new R410A for my own house would putting a liquid solenoid on and letting it go into pumpdown mode when the thermostat satisfies would allow the compressor an easier time on startup thus allowing for less wear and tear on the compressor? Or would installing a crankcase regulator on the suction line be a better way?
It's a Copeland Scroll compressor, I forgot if did or didn't matter if the scroll is under equalized pressures it would startup the same. That scroll would startup the same whether equalized or not.
Thanks for your input!
Membership Chair/ARP Committee / Professional Member*
Because it sure seems to me that both would do the opposite of your claimed intention.
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PHM
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When faced with the choice between changing one's mind, and proving that there is no need to do so, most tend to get busy on the proof.
New Guest
I don't feel either application will prolong the life of your compressor. The suction regulator is designed to regulate in a multiple evaporator application. Making the system pump down is to keep liquid from migrating back to the compressor causing slugging. I dont feel in a residential application that would apply. A crankcase heater will protect from this migration in your application.
God Speed, Jim. We'll miss you - 2-26-23
You don't need to add any of that stuff.
Just like a comprssor in a refrigeration system. Long run cycles prolong the life of the compressor of an A/C system.
So don't oversize your A/C.
Membership Chair/ARP Committee / Professional Member*
Do not use a cooling thermostat and set the hot gas bypass valve for the space temperature you want. You will have to fidle with it at first but just set it lower to reduce the house temp or higher to increase the space temp. When you get it balanced - just leave it there forever.
PHM
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When faced with the choice between changing one's mind, and proving that there is no need to do so, most tend to get busy on the proof.
God Speed, Jim. We'll miss you - 2-26-23
Just install it as per the install instructions.
Professional Member*
if it does not have a crank case heater you can add one but the easy way to prolong the compressor is a proper install proper charge and service it annully
Banned
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Professional Member*
Why not install a AMANA 14 SEER with life time compressor warranty and not do anything but relax!
Professional Member
Cause he don't want a glorified Goodman
I fully support the military and the War on Terrorism.
If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.
If you do know, then do. But do it right. Otherwise, you may not be doing it long.
Regular Guest
Thanks for replies, anyway thanks for the info on crankcase heater, I know most techs hate Goodman except home builders, but I got a good deal on it, I know shame on me, but it is a 14 seer. Other brands were 2X the price. I was told that a compressor has a easier time starting on a suction pressure that is lower than the equalized pressure on startup I sometimes like to Over-Engineer it, but probably I'm wasting my time.
I'll probably just throw on a Heater and be done with it.
Thanks everyone,
Professional Member
Actually compressors start easier with balanced pressure. And It seems to me that a scroll would allow the pressures to equalize since they don't have valves, making the solenoid useless anyway.
God Speed, Jim. We'll miss you - 2-26-23
The old ones did. Thats why they would spin backwards after shutting off.
Since they have a check valve now, they don't equalize if you have a SV, or balance post TXV.
Membership Chair/ARP Committee / Professional Member*
Connecting discharge to suction. Power the solenoid coil parallel with the coil of the compressor contactor but through a two second time delay relay.
That would give you full unloaded compressor start up.
PHM
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When faced with the choice between changing one's mind, and proving that there is no need to do so, most tend to get busy on the proof.
God Speed, Jim. We'll miss you - 2-26-23
And if the timer goes out, it gives you a good reason to get a new system.
Membership Chair/ARP Committee / Professional Member*
And put a thermostat on it near the suction connection. If it gets over the set-point it could either trip an alarm circuit to your alarm company or shut the unit down.
Don't be silly - we're saving the compressor here!
PHM
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When faced with the choice between changing one's mind, and proving that there is no need to do so, most tend to get busy on the proof.
God Speed, Jim. We'll miss you - 2-26-23
LOL..
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