EcoRenovator - View Single Post - A7 AirTap install (ASHP hot water heater)

Xringer · 08-08-12, 08:24 PM

The A7 should last 5-10 years. My guess is 7.2 years..

If my tank is still good when it goes, I'm going to get one of the UL listed Geyer models..
Geyser-R | Nyle Systems – Energy Saving Heat Pump Solutions

One problem that I see, is the anode rod is under the A7 box..
I'm going to have to slide the A7 out to the next set of holes in it's rails.
Then, I'll be able to remove the anode. I'm thinking once a year inspections.

~~~
I have been thinking about solar hot air heating of the basement for years.
But, placing a hot air collector in the front yard is a non-starter.
So, maybe hot attic air will be somehow usable.
It's been pretty dark here for about an hour, 77F outdoors, but it's 92F in the attic.
It gets up to 135F up there in mid summer.

In the winter, it routinely gets well above 65F up there.
But, I've been warned against bringing that moist air inside the house.
People tell me it would cause more problems than it was worth.

So, maybe I can locate an Air-to-Refrigerant HX up there?

Use one of my surplus wall AC units in the basement,

but locate the Evaporator coil up in the attic.?.

Install a heat sensor up there, so during the winter, when the attic gets up to 70F,
the AC comes on and starts pumping attic heat downstairs.?.

It would only run during day time, (if it's sunny) when we are likely to be using hotwater..

Plus, if I ran the AC off spare PV (stayed off-grid), it could be very cheap to run.

It's a bit complex.. But maybe there's another way.?.
~~~

One other idea that has crossed my feeble mind is stealing from Peter to pay Paul.
I would steal heat from the living areas upstairs!!

Please read on before yelling at me.. Because it's also using solar.

Many times during the winter, when the sun comes shining into the south windows, the Sanyos go into idle mode.
While the indoor temperature keeps climbing. My wife closes the shades, to control the heat gain.
(And I have seen her open windows when it's 20F outside)!

Anyways, the Heat Stealer would be a ducted fan blowing warm air down to the A7.
The Stealer fan would only be active when the A7 turned on, AND when the air upstairs in the kitchen was getting a bit too warm.
(Wife cooking, heat off the refrigerator, solar heat gain & etc).

It would be easy to control, since the A7 has a 120VAC outlet on it's back panel, that could power a small fan.
http://i46.photobucket.com/albums/f1...W/P1000582.jpg
The temperature controller is already in stock.
http://ecorenovator.org/forum/sale-t...html#post23108

Not really so much Stealing, but more like regulating heating..
Keep it from getting too hot upstairs!

08-08-12, 08:24 PM	#106
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	The A7 should last 5-10 years. My guess is 7.2 years.. If my tank is still good when it goes, I'm going to get one of the UL listed Geyer models.. Geyser-R \| Nyle Systems – Energy Saving Heat Pump Solutions One problem that I see, is the anode rod is under the A7 box.. I'm going to have to slide the A7 out to the next set of holes in it's rails. Then, I'll be able to remove the anode. I'm thinking once a year inspections. ~~~ I have been thinking about solar hot air heating of the basement for years. But, placing a hot air collector in the front yard is a non-starter. So, maybe hot attic air will be somehow usable. It's been pretty dark here for about an hour, 77F outdoors, but it's 92F in the attic. It gets up to 135F up there in mid summer. In the winter, it routinely gets well above 65F up there. But, I've been warned against bringing that moist air inside the house. People tell me it would cause more problems than it was worth. So, maybe I can locate an Air-to-Refrigerant HX up there? Use one of my surplus wall AC units in the basement, but locate the Evaporator coil up in the attic.?. Install a heat sensor up there, so during the winter, when the attic gets up to 70F, the AC comes on and starts pumping attic heat downstairs.?. It would only run during day time, (if it's sunny) when we are likely to be using hotwater.. Plus, if I ran the AC off spare PV (stayed off-grid), it could be very cheap to run. It's a bit complex.. But maybe there's another way.?. ~~~ One other idea that has crossed my feeble mind is stealing from Peter to pay Paul. I would steal heat from the living areas upstairs!! Please read on before yelling at me.. Because it's also using solar. Many times during the winter, when the sun comes shining into the south windows, the Sanyos go into idle mode. While the indoor temperature keeps climbing. My wife closes the shades, to control the heat gain. (And I have seen her open windows when it's 20F outside)! Anyways, the Heat Stealer would be a ducted fan blowing warm air down to the A7. The Stealer fan would only be active when the A7 turned on, AND when the air upstairs in the kitchen was getting a bit too warm. (Wife cooking, heat off the refrigerator, solar heat gain & etc). It would be easy to control, since the A7 has a 120VAC outlet on it's back panel, that could power a small fan. http://i46.photobucket.com/albums/f1...W/P1000582.jpg The temperature controller is already in stock. http://ecorenovator.org/forum/sale-t...html#post23108 Not really so much Stealing, but more like regulating heating.. Keep it from getting too hot upstairs! __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less.. Last edited by Xringer; 08-08-12 at 08:28 PM..