Thread: The Next in Line Project

Originally Posted by Slab

Amish Mfg innovative in cooling tech, now that's cool. Glad to hear that. Great job as usual Rojo.

Literally Cool! Their Dometic Cooling Unit freezers have been clocked at 7 degrees below Zero. I have never had a Dometic freezer do better than 10 degrees above Zero.

Not all work going here is storm recovery. That just added to my self-inflicted burdens. I did finish the new AC install, all digital controls, now we have a Heat Pump as well as a Furnace (it is hard for me to sleep thru the Furnace cycling), the possibility of just turning the system to "ON" and it selects which system to run for climate control. I don't have a picture of the controller right now so I will add to this post later.



Since the mounting base had to be removed on the old unit all the foil tape sealing it to the ductwork had to be removed too. When I resealed the new base I used Foil Mastic Tape a far superior product. It took a couple of hours to do a very good but clean job. No air leaks at all after completion.



I didn't get a very good picture but this new Dometic AC unit has all the Evaporator Coil area insulated with molded Bead Foam. Really it is like being enclosed in a Styrofoam ice chest.



After adding the Dometic Soft Start to the AC unit skid I had to install their CCC2 Digital control box and wire it in.



The installation manual recommended using a wire connector like these WAGO units like I used here for all the terminations.



The filter and ceiling register just slides in from the sides snapping in place.



With the Trim on you can see I have to make a Trim Base to hide the marks in the ceiling from the old unit. That will be later, I have a truck to fix.

With the refrigerator pushed back it is time to install the Boiler Over-temp Safety Device. If I had one of these installed to begin with I would not have had a Cooling Unit failure.



Here is the wiring schematic. Its pretty straight forward, the bulb on the boiler senses the temperature and cuts power to the fridge if too high a reading is present.



Since I added quite a bit of add-ons to the refrigerator they all needed power supplied. The new Blower fan for the Cooling fins didn't have a fuse so I added one again for safety. All the slack in the wiring was policed up, propane connections here and the Hot Water Heater were tested for leaks, and the ARPRV Controller installed.



The controller mounts to the Printed Circuit Board cover. It was kinda late by this point yesterday so I will fire up the refrigerator today sometime.

That asorbsion technology works well. That ammonia can be some tough stuff to breath around when one ruptures. I did some repairs on a few of them when I worked as a tech at a Camper Shop

Originally Posted by DockShootinJack

That asorbsion technology works well. That ammonia can be some tough stuff to breath around when one ruptures. I did some repairs on a few of them when I worked as a tech at a Camper Shop

I was surprised when the JC Refrigeration blower fan came on to cool the coils very close to startup today. A bi-metal switch is screwed to a flat plate the Amish unit is manufactured with. Simple design, plate heats and the switch closes. I was repairing the roof a little while ago installing the new refrigerator roof vent and heard it cut off. Went in to check the temps after 8 hours of running and the freezer was 25 the box 40. I need to get it a little colder than that so I guess I will slide the sensor up the fin a bit. We didn't discover the boiler burst till well after the heatwave last summer. The yellow stuff was all over in the boiler insulation. I noticed the air off the Cooling Unit top Coil gets pretty warm, glad I went with the blower now.