Original message
| tatatech05
|  "R410 installation Carrier split system linest"
, posted Thu 24 Apr 23:01  
What is the comments on sequence of installation of a liquid line solenoid,liquid filter drier, sight glass, lineset installation?. Currently: condenser discharge with direction of flow LLS valve, than Liquid drier, and last sight glass all at condenser unit. System carrier split , condenser above air handler unit, long line set up (+80 ft), not clear, discussion amongst installers , n service techs, and commissioning dept, cant agree. whats the oever opinion from fellow techs. appreciate any comments. thanks
mmm
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Replies:
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| theduke03
|  "Re(1):R410 installation Carrier split system "
, posted Fri 25 Apr 19:06
LLS should be close to evaporator, Drier and sight glass could go anywhere but preferably together wiyh drier first then SG. In theory I suppose the best would be: LLS,drier,SG in that order, close to evap so you can see whats going into it.
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| | tatatech05
| "Re(2):R410 installation Carrier split system" , posted Sat 3 May 16:50
I agree, that is my experience to split the evaporator from condenser an d observe any possible flashing of refrigerant due to starving txv or orifice restriction at indoor coil. thanks
mmm
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| | chiller guy
| "Re(2):R410 installation Carrier split system" , posted Sat 26 Apr 07:25
I am going to differ with Duke on one item - the drier. As he said, all the components should be installed close to the evaporator toward the end of the liquid line run. First mount the drier (which is also a filter)to catch any forign material(chips,filings,flux,solder,etc.)that could get into the LLS and cause it to stick or leak. Next, the LLS (regardless if its a pumpdown or just a stop valve). This gives you the entire liquid line to store refrigerant in (pumpdown)and usually involves less wiring. If used as a stop valve it can go close to the condenser.
Finally the sight glass. This should be just ahead of the TXV so that you can see if you are getting any flash gas at the inlet of the valve. It can help tell you if you are short of charge, have a sticking LLS, or a restricted drier.
Hope this helps
All refrigerants are safe - All refrigerant are dangerous. The difference is YOU !!!
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| | cyril
| "Re(3):R410 installation Carrier split system" , posted Thu 22 May 15:14
I agree with chiller guy, he has the right idea....
CM
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| | tatatech05
| "Re(3):R410 installation Carrier split system" , posted Sat 3 May 16:55
Yes, I stand I can agree on the option to use the lls as a stop valve. I see the purpose of pump down, what is the teory of a stop valve, other than stop flow adn prevent refrigerant migration n oil out of pump. is there more to this. stop valve LLS at condenser? thanks again
mmm
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| | theduke03
| "Re(3):R410 installation Carrier split system" , posted Sat 26 Apr 15:37
chiller guy is right, my bad.
Some of the pictures displayed here are brought to you by Houston204. Be Safe.
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