#2 Sanyo 24KHS72 AC/HP Install Project (Oct 2011) - Page 6

Xringer · 01-27-12, 04:29 PM

When I first moved in here, I was kinda puzzled by that special red switch
way up high on the wall in the kitchen.?.

In series with the main power to the oil burner???
Then, I was told.. "If the house starts filling with smoke, turn off the red switch!"

That's when I started to wonder how many short people have died trying to reach
up there during a fire??

Xringer · 05-30-12, 07:30 PM

Sanyo #2 worked very well during the winter and has worked fine,
on the few hot days we've had so far this summer.
No problems at all and power usage has been about the same as #1.

launboy · 05-31-12, 12:19 AM

Xringer, what's this red switch you speak of, never heard of such a thing.

Adam

Xringer · 05-31-12, 07:06 AM

All the houses around here have a switch, normally high up on the wall, near the basement stairs.
It controls the power to the oil burner.
So, if your basement if filled with smoke, (Raccoon nest in the flue) you can shut down the burner from upstairs..

That was the wire that S-F cut into by accident (My guess anyways).

Xringer · 01-26-13, 02:32 PM

It is 469 days from the start up date, Or 1 year, 3 months, 11 days.

This month we've had some pretty cold weather and the Den as remained at the selected setpoint. (20 or 21 C).

Monthly Highs/Lows
High Temperature 60.9°F 01/14/13
Low Temperature 1.1°F0 1/24/13
30 day Average: 29.3 °F

Because of the smaller room, this Sanyo seems to be working better than #1 Sanyo,
when the temperature gets down into the low single digits F.. (Like 1 deg F).

Overall, we are very pleased with the performance of this repaired unit.

Xringer · 02-09-13, 07:25 AM

Sanyo #2 (den) is working better than #1 (LR). Staying warm, but lots of cycling.
It's still going to be snowing until noon time. So we're going to have a few more defrost cycles going on.
15 kWh in the 8 hours since midnight.. Not too awful.

The problem with repeating defrost cycles is the slight heat loss in the house.
When the living room and hall drop to 19C, and the T-stat is set for 20C,
it can over-current (over 10A or 2.4kW) and reset.
Once the unit comes back on, sees it needs one more degree,
it might reset again, depending on the amount of remaining ice.
More ice=more current while running.

Yesterday afternoon, we had a nice 21C going in the house and both units were doing a good job.
But when I went out to shovel, I saw both units had about 70% of their HX covered in snow & ice..
I think they were working so well, because it wasn't that cold yet. It was abt 30F.
But when the main storm hit, it got down under 20F real fast and stayed there..

Sanyo #2 is on the north side of the house and gets less blowing snow..?.

I was thinking that if most of the air input to the until was drawn from under the deck,
it would be free of blowing snow, and cause less defrost cycling..

It might be good in the summer too, since it's cooler and shady under the Den & deck..

warmwxrules · 02-17-13, 08:11 PM

What direction do your heat pumps face? Have you thought about building a roof for them or is that not recommended? Not sure if you answered this in other posts, but how much snow did you end up with? Sounds like they've been doing a good just keeping you warm.

Xringer · 02-17-13, 08:39 PM

It's not so much the snow depth, it's a problem when it's light fluffy snow that's blowing around.
It gets sucked into the HX and clogs it up pretty fast. This weekend has been another defrost weekend.

The den unit is on the north side, next to the deck.
The living room unit is on the east side, between the house and garage.
The wind really whips in that little canyon..That unit has snow shelter,
but it doesn't help when the snow is light as pollen..

I think if the units were under a large shelter, where the snow couldn't reach,
before falling to the ground.. That would eliminate the direct clog problems.

But, when the temp is around 20F and it's humid, so the dewpoint is near the air temp..
The units will still need to defrost once in a while..

Right now, dewpoint is not a problem..

When the red and blue plots start to merge, who ya gonna call? Frost Busters!

The wind is the problem tonight.

It's blowing the snow all over the place.. And behind the Sanyos..

One more reason to move to Texas!!

MN Renovator · 02-18-13, 04:13 AM

"One more reason to move to Texas!!" You might need to superinsulate and air seal the Texas house and make sure you don't have any heavy glazing facing south, southwest, or west, and get a tiny high SEER Fujitsu to cover the rest of the increased cooling you'll need.

Xringer · 02-18-13, 02:03 PM

Yeah, it does get warm down there. The daily highs in the summer are killers!
But the winter lows are sweet!!

01-27-12, 04:29 PM	#51
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	When I first moved in here, I was kinda puzzled by that special red switch way up high on the wall in the kitchen.?. In series with the main power to the oil burner??? Then, I was told.. "If the house starts filling with smoke, turn off the red switch!" That's when I started to wonder how many short people have died trying to reach up there during a fire?? __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..

05-30-12, 07:30 PM	#52
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Update on Sanyo #2 Sanyo #2 worked very well during the winter and has worked fine, on the few hot days we've had so far this summer. No problems at all and power usage has been about the same as #1. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..

05-31-12, 07:06 AM	#54
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	All the houses around here have a switch, normally high up on the wall, near the basement stairs. It controls the power to the oil burner. So, if your basement if filled with smoke, (Raccoon nest in the flue) you can shut down the burner from upstairs.. That was the wire that S-F cut into by accident (My guess anyways). __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..

01-26-13, 02:32 PM	#55
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	469 days on #2 Sanyo It is 469 days from the start up date, Or 1 year, 3 months, 11 days. This month we've had some pretty cold weather and the Den as remained at the selected setpoint. (20 or 21 C). Monthly Highs/Lows High Temperature 60.9°F 01/14/13 Low Temperature 1.1°F0 1/24/13 30 day Average: 29.3 °F Because of the smaller room, this Sanyo seems to be working better than #1 Sanyo, when the temperature gets down into the low single digits F.. (Like 1 deg F). Overall, we are very pleased with the performance of this repaired unit. Attached Thumbnails __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..

02-09-13, 07:25 AM	#56
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	I hate blizzards! (and the defrost cycles they bring) Sanyo #2 (den) is working better than #1 (LR). Staying warm, but lots of cycling. It's still going to be snowing until noon time. So we're going to have a few more defrost cycles going on. 15 kWh in the 8 hours since midnight.. Not too awful. The problem with repeating defrost cycles is the slight heat loss in the house. When the living room and hall drop to 19C, and the T-stat is set for 20C, it can over-current (over 10A or 2.4kW) and reset. Once the unit comes back on, sees it needs one more degree, it might reset again, depending on the amount of remaining ice. More ice=more current while running. Yesterday afternoon, we had a nice 21C going in the house and both units were doing a good job. But when I went out to shovel, I saw both units had about 70% of their HX covered in snow & ice.. I think they were working so well, because it wasn't that cold yet. It was abt 30F. But when the main storm hit, it got down under 20F real fast and stayed there.. Sanyo #2 is on the north side of the house and gets less blowing snow..?. I was thinking that if most of the air input to the until was drawn from under the deck, it would be free of blowing snow, and cause less defrost cycling.. It might be good in the summer too, since it's cooler and shady under the Den & deck.. Attached Thumbnails __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less.. Last edited by Xringer; 02-09-13 at 07:58 AM..

05-31-12, 12:19 AM	#53
launboy Apprentice EcoRenovator Join Date: Mar 2011 Location: SE Wisconin Posts: 107 Thanks: 3 Thanked 11 Times in 9 Posts	Xringer, what's this red switch you speak of, never heard of such a thing. Adam

02-17-13, 08:11 PM	#57
warmwxrules Helper EcoRenovator Join Date: Nov 2011 Location: La Crosse, WI Posts: 78 Thanks: 0 Thanked 3 Times in 3 Posts	What direction do your heat pumps face? Have you thought about building a roof for them or is that not recommended? Not sure if you answered this in other posts, but how much snow did you end up with? Sounds like they've been doing a good just keeping you warm.

02-17-13, 08:39 PM	#58
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	It's not so much the snow depth, it's a problem when it's light fluffy snow that's blowing around. It gets sucked into the HX and clogs it up pretty fast. This weekend has been another defrost weekend. The den unit is on the north side, next to the deck. The living room unit is on the east side, between the house and garage. The wind really whips in that little canyon..That unit has snow shelter, but it doesn't help when the snow is light as pollen.. I think if the units were under a large shelter, where the snow couldn't reach, before falling to the ground.. That would eliminate the direct clog problems. But, when the temp is around 20F and it's humid, so the dewpoint is near the air temp.. The units will still need to defrost once in a while.. Right now, dewpoint is not a problem.. When the red and blue plots start to merge, who ya gonna call? Frost Busters! The wind is the problem tonight. It's blowing the snow all over the place.. And behind the Sanyos.. One more reason to move to Texas!! Attached Thumbnails __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..

02-18-13, 04:13 AM	#59
MN Renovator Less usage=Cheaper bills Join Date: Nov 2010 Location: Minneapolis, MN Posts: 939 Thanks: 41 Thanked 116 Times in 90 Posts	"One more reason to move to Texas!!" You might need to superinsulate and air seal the Texas house and make sure you don't have any heavy glazing facing south, southwest, or west, and get a tiny high SEER Fujitsu to cover the rest of the increased cooling you'll need.

02-18-13, 02:03 PM	#60
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Yeah, it does get warm down there. The daily highs in the summer are killers! But the winter lows are sweet!! Attached Thumbnails __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..