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Old 07-28-2011, 06:02 PM   #1
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I'm dumb and need help.


I am a first year apprentice in a commercial/industrial mechanical equipment service union. The contractor I work for was able to get me a new heat pump at their cost for my house to replace the old one when it broke. I took a huge paycut for this job and can't even afford to pay one of my work buddies to help me install it, much less a residential contractor. I want to be able to install it myself. I have a carrier 2- ton 410A system. It's an upflow a-coil, and so far I've got the a-coil connected into the the ductwork, and ran the drain line. I've ran the new line set and I basically just need to pipe it up and wire it up. I also mounted a new thermostat. I know little about wiring diagrams and refrigeration but obviously I will need to in my trade. ( I just started working last month). I've arranged to borrow some equipment (gauges, refrigerant, vacuum pump, nitrogen for a purge/vacuum, and a torch set and such) from a co-worker tomorrow so I can hopefully finish it this weekend.Can anybody walk me through wiring this thing? I can provide any information you need. I'd like to get it all wired up so once it's charged I can fire it up and finally get some AC (it's been a long hot summer).

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Old 07-28-2011, 06:18 PM   #2
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Stage 1:
Welding the line set ( Use N2 )
Install Liquid line filter drier
make sure you cover with wet cloth any component that is near the welding

Let me know if you have any question on the first stage,

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Old 07-28-2011, 06:23 PM   #3
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Removing the schraeder valve cores might help before you weld er up.

If you have never installed a system it is not as easy as it sounds. Very easy to overheat/damage/ruin the service valves, get leaks from bad welds, moisture in the system etc. I would try and trade some services/labor (help him move or shingle his roof or whatever) with one of your guys who knows how to do this and watch and learn from him.
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Old 07-28-2011, 07:26 PM   #4
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Buy that co worker some beer and have him help you. have a BBQ for him.
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Old 07-28-2011, 07:32 PM   #5
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Most guys will work for Beer and a BBQ and it is a good way to get to know him/your co-workers. If he is good at his job he can hook it up in 4-6 hours on a Saturday.
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