Mini Split install - Page 23

pinballlooking · 01-13-15, 04:42 PM

We have made it this far without using the natural gas heat.

We just got out natural gas bill and we saved $113 for same time when we did not have Mini splits.

We saved $125.64 electric bill (from our solar power)
And $152 in gas savings. Gas cost has come down but it is still a decent savings. (Chevy Volt EV miles)

December savings total $390.64

They have been keeping the other rooms except the bedrooms @ 76f during the day.
So I am glad we have a good reserve of solar built up to heat with.

dablack · 01-27-15, 03:02 PM

Quote:

Originally Posted by pinballlooking

I just went with the install manual and install videos that I watched. It comes precharged for a 25’ lineset.
It is easier to do DIY and not shorten the line set but it does look better if you do shorten it. but you need to adjust the charge if your shorten it.

I am not a HVAC guy but there are some very knowledgeable guys on this forum. Maybe one of them will jump in and give a better answer.

OK! This responce confused me. I put AC in my 71 F100. Of course everything was empty when I bought the parts and made the hoses. I put my gauge set on the high and low side, opened up the valves, pulled a vac, closed the valves and turned off the pump. I let it sit for a couple of hours to make sure air wasn't getting in. The guages held so I then hooked up the R134 to the middle line of my gauge set and then opened up the low pressure side. This filled in the system enough that I could then turn on the engine, turn on the AC (enough R134 was in there to keep it turning) and then put in the rest of the R134 that I needed.

If the MS comes precharged, what are you pulling the vac on? Wouldn't you be sucking all the charge out? I'm just not seeing how this works?

thanks
Austin

Xringer · 01-27-15, 03:27 PM

The copper lineset that connects the outdoor unit, to the indoor unit is normally about
25 feet long. The Outdoor unit is "precharged for a 25’ lineset." Typically.

You need to pull all the air out of the line set and indoor unit (it has a coil array)
before you can release the charge from the outdoor unit, into the new system..

dablack · 01-28-15, 06:19 AM

Ok, so the charge is contained in the outdoor unit and you only release the charge to the line set/indoor unit, after vacuuming the line set/indoor unit.

I guess there is a valve you open after the line set/indoor unit are ready?

Now that, that is cleared up, I'm looking forward to my install!

Thanks
Austin

Xringer · 01-28-15, 10:29 AM

There are two valves. One for each line going to the indoor unit.

Your install manual should have all the details and a sequence to follow.
There are some installs described on this forum. You should read some of them.
Might help you avoid some of the mistakes others have made..

I've also seen some good install guides on YouTube.. Check it out
someone may have installed the same model M/S as yours..
Most of them install the same way, since many are made
from the same design, some of them at the same factory..

pinballlooking · 02-04-15, 12:01 AM

The Mini Splits are kicking it tonight it is 33 deg out and my Gree 9K bedroom unit is putting out 129 deg heat. We have not used the natural gas heat once so far this winter. I hope we make it the rest of the winter without using natural gas heat.

ctgottapee · 02-04-15, 04:04 PM

In the light winter areas, they really should be the default now for installs.

Going to -10 and snowing tonight so I'll see a lot of defrost mode.
Without the long streaks of negative temps like last year, this year is a lot more comfortable for me, and only had to go out and manually defrost with a bucket of hot water once so far.

Xringer · 02-04-15, 06:10 PM

YES!! It jumped up to 32F+ today! Nice.. We are going to have a Sanyo night tonight!

We've been burning way too much oil these days!

"a bucket of hot water" That can't be good for the system..

If you don't mind a cool blast of air, put your MS in dehumidify mode.
Then set the temp about 1 deg below room temp..
The outdoor HX coil will heat up and the ice and snow will melt away..

ctgottapee · 02-04-15, 06:53 PM

Quote:

Originally Posted by Xringer

"a bucket of hot water" That can't be good for the system..

If you don't mind a cool blast of air, put your MS in dehumidify mode.
Then set the temp about 1 deg below room temp..
The outdoor HX coil will heat up and the ice and snow will melt away..

The hot water is too melt the outdoor units pan full of ice from the condensate. If the temp is under 10 degrees all week, it eventually plugs and starts filling up, it will eventually reach the blades.

I doubt you can manually invoke, evade, or control the defrost action on these minisplits

pinballlooking · 02-16-15, 09:33 AM

Comfort up has GREE Terra 9,000 BTU with free line set and wiring sale 28 feet of 14-4 AWG 600v wire for connecting the indoor evaporator to the outdoor unit $1,080 shipped.

I have three of these they are really good 27 SEER units.

GREE Terra Superior Efficient 9,000 BTU Ductless Mini Split A/C (208/230V) w/ Inverter

9,000 BTU, 208/230 Volt Terra Ductless Mini Split - ComfortUp

I bought my last two from these guys and I had no issues. they packed them really well. (I have no affiliation with them other than a one time buyer)

01-27-15, 03:27 PM	#223
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	The copper lineset that connects the outdoor unit, to the indoor unit is normally about 25 feet long. The Outdoor unit is "precharged for a 25’ lineset." Typically. You need to pull all the air out of the line set and indoor unit (it has a coil array) before you can release the charge from the outdoor unit, into the new system.. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..

01-28-15, 10:29 AM	#225
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	There are two valves. One for each line going to the indoor unit. Your install manual should have all the details and a sequence to follow. There are some installs described on this forum. You should read some of them. Might help you avoid some of the mistakes others have made.. I've also seen some good install guides on YouTube.. Check it out someone may have installed the same model M/S as yours.. Most of them install the same way, since many are made from the same design, some of them at the same factory.. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..

02-04-15, 06:10 PM	#228
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	YES!! It jumped up to 32F+ today! Nice.. We are going to have a Sanyo night tonight! We've been burning way too much oil these days! "a bucket of hot water" That can't be good for the system.. If you don't mind a cool blast of air, put your MS in dehumidify mode. Then set the temp about 1 deg below room temp.. The outdoor HX coil will heat up and the ice and snow will melt away.. Attached Thumbnails __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..

01-13-15, 04:42 PM	#221
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	We have made it this far without using the natural gas heat. We just got out natural gas bill and we saved $113 for same time when we did not have Mini splits. We saved $125.64 electric bill (from our solar power) And $152 in gas savings. Gas cost has come down but it is still a decent savings. (Chevy Volt EV miles) December savings total $390.64 They have been keeping the other rooms except the bedrooms @ 76f during the day. So I am glad we have a good reserve of solar built up to heat with.

01-28-15, 06:19 AM	#224
dablack Helper EcoRenovator Join Date: Jan 2010 Posts: 65 Thanks: 0 Thanked 13 Times in 6 Posts	Ok, so the charge is contained in the outdoor unit and you only release the charge to the line set/indoor unit, after vacuuming the line set/indoor unit. I guess there is a valve you open after the line set/indoor unit are ready? Now that, that is cleared up, I'm looking forward to my install! Thanks Austin

02-04-15, 12:01 AM	#226
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	The Mini Splits are kicking it tonight it is 33 deg out and my Gree 9K bedroom unit is putting out 129 deg heat. We have not used the natural gas heat once so far this winter. I hope we make it the rest of the winter without using natural gas heat.

02-04-15, 04:04 PM	#227
ctgottapee Helper EcoRenovator Join Date: May 2013 Location: Central IL Posts: 97 Thanks: 34 Thanked 9 Times in 8 Posts	In the light winter areas, they really should be the default now for installs. Going to -10 and snowing tonight so I'll see a lot of defrost mode. Without the long streaks of negative temps like last year, this year is a lot more comfortable for me, and only had to go out and manually defrost with a bucket of hot water once so far.

02-16-15, 09:33 AM	#230
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	Comfort up has GREE Terra 9,000 BTU with free line set and wiring sale 28 feet of 14-4 AWG 600v wire for connecting the indoor evaporator to the outdoor unit $1,080 shipped. I have three of these they are really good 27 SEER units. GREE Terra Superior Efficient 9,000 BTU Ductless Mini Split A/C (208/230V) w/ Inverter 9,000 BTU, 208/230 Volt Terra Ductless Mini Split - ComfortUp I bought my last two from these guys and I had no issues. they packed them really well. (I have no affiliation with them other than a one time buyer)