Sealed room cooling question

mrblu said:

I just ordered a mini split that's the best fix. Will probably go to those parazontal hoods after I get it.

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if you need help installing it, i can help you out a little with info on how to do it.

I watched the install video seemed simple enough. I know I'm going to have extra pressure from not evacuating the lines but it should only be 5 or 10% loss at most

mrblu said:

I watched the install video seemed simple enough. I know I'm going to have extra pressure from not evacuating the lines but it should only be 5 or 10% loss at most

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poor mans evac. Open small service valve while pushing in shraeder valve on big service valve, after it blows out real quick, let go. it's purged.

Thanks for the help everyone. IL be back if I run into any other problems.

What's a shraeder valve

mrblu said:

What's a shraeder valve

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like where you put air in a bike tire

So that will push out all the air in the circuit and charge the lines or whatever. Just using the freon?

this is a service valve, yours will have a big one and a little one

mrblu said:

So that will push out all the air in the circuit and charge the lines or whatever. Just using the freon?

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yes, you remove those 2 caps on both valves, inside the top you'll need a hex wrench to turn it.
you turn the small valve to open a little while pushing in the shrader on the other one and push the air out.

Oh ok. You just can't vaccum the head unit.

mrblu said:

Oh ok. You just can't vaccum the head unit.

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once you connect the copper lines, you want all the air out of them, the head unit will be pre charged with nitrogen, you will release that.
if you have or can get a hvac vaccuum pump, you just pull a vaccuum on the lines, if not, you do a poor man.

I never used quick connect lines, they may come pre charged and you may not need to evac.

They are suppose to be precharged

So when they say precharged they are talking about the head unit lines?

Oh it says condenser is precharged. In the video it just shows them connecting it and then releasing refrigerant.

http://www.amazon.com/dp/B00FH4DSDA/ref=pe_825000_114660910_TE_item

There's not much reviews because of some hater who has never purchased one gave it a 1 star.

Here's their install video

mrblu said:

http://www.amazon.com/dp/B00FH4DSDA/ref=pe_825000_114660910_TE_item

There's not much reviews because of some hater who has never purchased one gave it a 1 star.

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it looks like the condenser is the only thing pre charged, In a/c we pull a vacuum on the lines and head unit to remove air and crude before opening the valves to charge the system. So, if it was my unit, I would do evacuation, or the poor man purge if you don't have a vacuum pump.

So connect the lines to the condenser and then let a small amount of refrigerant out then close the hex screw valve? And on the head unit I imagine there's some sort of valve on the connectors or in the head unit to open or depress for a moment? Then just finish connecting the lines together and release the refrigerant?

mrblu said:

So connect the lines to the condenser and then let a small amount of refrigerant out then close the hex screw valve? And on the head unit I imagine there's some sort of valve on the connectors or in the head unit to open or depress for a moment? Then just finish connecting the lines together and release the refrigerant?

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connect lines to head unit and condenser, 2 valves on condenser, each valve has spot to open valve and connect a hose. Open valve on little on small service valve while pushing in shrader on hose connection on big service valve. when it spits, let go. open valve rest of way, open big valve and you're done.

So the small one will cleanse both lines?

And I'm assuming after it spits out whatever connect the hose to the larger one before opening valve?