Sealed room cooling question

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
Click to expand...
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.
 
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
attachment.php
 
mrblu said:
So that will push out all the air in the circuit and charge the lines or whatever. Just using the freon?
Click to expand...
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.
 
mrblu said:
Oh ok. You just can't vaccum the head unit.
Click to expand...
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.
 
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.
 
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?
Click to expand...
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.
 
And I'm assuming after it spits out whatever connect the hose to the larger one before opening valve?
 
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