This afternoon, ran a short chiller test with 1.5 gallons of water in the test loop tray.
About 1" of ice quickly formed around the coil loops, but since there was no water circulation,
the over-all water temperature only got down to 67F.
Then, I reconnected the 4-way valve and started up some heating tests.
Because of the high amperage, each of the three runs was limited to three or four minutes.
When current got too high, I shut down the run let it rest for a minute or two before restarting.
Due to the ice, I just recorded the temperature on the LCD/sensor on the hot side (large pipe of line-set).
(Temperature of the gas going
into the cold water).
1. 400 PSI 9A (2,140w) 80 F
2. 460 PSI 9A (2,140w)90 F
3. 500 PSI 10A (2,380w) 100.5 F
You will notice that I let the pressure get a little higher on each test.
On the last test, I figured that 500 PSI a bit too high for safety.
The current
and pressure rise showed no sign of slowing down,
so testing was terminated before anything popped.
http://i46.photobucket.com/albums/f1.../referFlow.jpg
http://i46.photobucket.com/albums/f1...CL/outdoor.jpg
~~~
There is a big difference in current use. Heating
10A+, Cooling
5.4A steady.
The Sanyo controller was running the system because of the ground on the T-Run test terminal.
The controller
had no way of knowing that I had unplugged the 4-Way valve during the chiller tests.
The default mode is heating (with the 4-way valve energized).
Why is the heating (default) mode using twice as much power?
Guesses:
1. One or more of the thermistor sensors are providing feedback to the controller, telling it to pour on the power..?.
2. There isn't enough R410A in the system, to run in heat mode properly.?.
Plans:
Add more R410A (currently in the mail) to the system. And re-test..
It will be interesting to see if the cooling power goes up from 5A,
and the heating power drops down a bit, as more R410A is added.
Cheers,
Rich