Mini Split install - Page 15

pinballlooking · 05-06-14, 12:32 PM

It is 86 here now heading to 91 today. I like this much better than winter.

WyrTwister · 05-06-14, 03:03 PM

I was doubtful , too .

My guess , when I got home from work ( about 05:00 PM ) would have been in the HIGH 90's ?

Today's forecast is for a high of 97 F .

God bless
Wyr

PS Need to get off my lazy behind and ( now that it has warmed up a little ) replace my old electrical service with a new 200 amp service .

Need a better place to tie in the mini split and the new electric water heater .

evolv3 · 06-05-14, 08:24 AM

You guys did an awesome job on this! Its helping me a lot in getting prepped for my own install.

I have absolutely zero experience in working with ac/gauges/pumps/etc.....lol! But I aint skeered.

Can I ask one favor?

Can you draw a diagram of how you ended up connecting everything to do the vacuum?

Seems as though you didn't even use a manifold gauge if im understanding correctly? So you connected like this?:

MS service port -> YJ ballvalve -> YJ vacuum hose -> SVG3 micron gauge (guess there is a T here included?) -> YJ vacuum hose -> Robinaire pump

Are all the service ports standard size (1/4"?) on these things that the YJ ball valve/hoses connect correctly?

I bought a mitsu MSZ-FE12na/MUZ-fe12na

Sorry for the ignorance

Again awesome write up!

pinballlooking · 06-05-14, 09:32 AM

http://ecorenovator.org/forum/geothe...nstall-11.html
Look at post 110
I was just testing my new hoses here. Add a T here with the micron gouge on the T. The ball valve would go to the MS adapter and on the MS.
That is how I did mine. Once the vacuum was where I wanted it I would shut off the ball valve then release the Freon the quickly remove the ball valve.

You might want to wait for someone that has HVAC experience to confirm this I
is the best method.

Only do this if you tested your ball valve under very low vacuum the first two ball valves I got would not work under very low vacuum.

You can test your hoses and ball valve just the way I did in this post.

WyrTwister · 06-05-14, 10:07 AM

My mini split had a standard 1/4" fitting . I have that size hoses & gauges . And my vacuum pump uses that fitting , too .

God bless
Wyr

evolv3 · 06-05-14, 10:30 AM

Thanks guys, did the yellow jacket ball valves give you issues too?

pinballlooking · 06-05-14, 10:33 AM

Quote:

Originally Posted by evolv3

Thanks guys, did the yellow jacket ball valves give you issues too?

No they are great valves but you should still test them to make sure they are working good.
Mine easily pulled down to 55 microns when I tested them.
I was not sure what ball valve you bought.

pinballlooking · 06-05-14, 11:42 AM

Quote:

Originally Posted by evolv3

I bought a mitsu MSZ-FE12na/MUZ-fe12na

Is this the unit you bought?
https://www.goductless.com/Mitsubish...ubishi:24443:1 Ton
It looks like a very nice unit.

evolv3 · 06-05-14, 12:05 PM

Close....but i got the model right below it as i dont need the ultra low temp heating options. Its going in a server room so it will never run on heat anyway.

SORRY, i tried to post a link but i dont have enough posts yet i guess.?

evolv3 · 06-05-14, 12:06 PM

Anyway to tell if i will need the 5/16 adapter or if 1/4 will connect directly?

I looked thru the manual but cant seem to see mention.

05-06-14, 12:32 PM	#141
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	It is 86 here now heading to 91 today. I like this much better than winter.

05-06-14, 03:03 PM	#142
WyrTwister Master EcoRenovator Join Date: Jun 2013 Location: USA Posts: 543 Thanks: 6 Thanked 44 Times in 38 Posts	I was doubtful , too . My guess , when I got home from work ( about 05:00 PM ) would have been in the HIGH 90's ? Today's forecast is for a high of 97 F . God bless Wyr PS Need to get off my lazy behind and ( now that it has warmed up a little ) replace my old electrical service with a new 200 amp service . Need a better place to tie in the mini split and the new electric water heater .

06-05-14, 08:24 AM	#143
evolv3 Lurking Renovator Join Date: Jun 2014 Location: FL Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	You guys did an awesome job on this! Its helping me a lot in getting prepped for my own install. I have absolutely zero experience in working with ac/gauges/pumps/etc.....lol! But I aint skeered. Can I ask one favor? Can you draw a diagram of how you ended up connecting everything to do the vacuum? Seems as though you didn't even use a manifold gauge if im understanding correctly? So you connected like this?: MS service port -> YJ ballvalve -> YJ vacuum hose -> SVG3 micron gauge (guess there is a T here included?) -> YJ vacuum hose -> Robinaire pump Are all the service ports standard size (1/4"?) on these things that the YJ ball valve/hoses connect correctly? I bought a mitsu MSZ-FE12na/MUZ-fe12na Sorry for the ignorance Again awesome write up!

06-05-14, 09:32 AM	#144
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	http://ecorenovator.org/forum/geothe...nstall-11.html Look at post 110 I was just testing my new hoses here. Add a T here with the micron gouge on the T. The ball valve would go to the MS adapter and on the MS. That is how I did mine. Once the vacuum was where I wanted it I would shut off the ball valve then release the Freon the quickly remove the ball valve. You might want to wait for someone that has HVAC experience to confirm this I is the best method. Only do this if you tested your ball valve under very low vacuum the first two ball valves I got would not work under very low vacuum. You can test your hoses and ball valve just the way I did in this post.

06-05-14, 10:07 AM	#145
WyrTwister Master EcoRenovator Join Date: Jun 2013 Location: USA Posts: 543 Thanks: 6 Thanked 44 Times in 38 Posts	My mini split had a standard 1/4" fitting . I have that size hoses & gauges . And my vacuum pump uses that fitting , too . God bless Wyr

06-05-14, 10:30 AM	#146
evolv3 Lurking Renovator Join Date: Jun 2014 Location: FL Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks guys, did the yellow jacket ball valves give you issues too?

06-05-14, 12:05 PM	#149
evolv3 Lurking Renovator Join Date: Jun 2014 Location: FL Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	Close....but i got the model right below it as i dont need the ultra low temp heating options. Its going in a server room so it will never run on heat anyway. SORRY, i tried to post a link but i dont have enough posts yet i guess.?

06-05-14, 12:06 PM	#150
evolv3 Lurking Renovator Join Date: Jun 2014 Location: FL Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	Anyway to tell if i will need the 5/16 adapter or if 1/4 will connect directly? I looked thru the manual but cant seem to see mention.