Refrigeration Upgrades - questions
Posted: Sat Sep 23, 2023 3:17 pm
The refrigeration system on our boat, hull 442, has just stopped working effectively. My initial diagnosis is that the temperature control knob (rheostat) has failed. The knob is locked in place in the vicinity of its warmest setting. I’m going to try replacing the rheostat first and see if that fixes the problem.
We spent the past week on the boat icing things down in coolers and talking about upgrades to the refrigeration. Even if the quick fix works
I want to see if we can improve our system. I’ve read through most of the refrigeration forum related to temperature, controls and different configurations. What I have learned is that the refrigeration compartment in our boat differs from the early hulls, and maybe even some of the Mark II boats. First, the box has the improved insulation - when the system is working it stays very cold. Second, there is no bulkhead between the freezer and fridge compartments, and no fan. As such, the space is big and difficult to organize. We use the space inside the cold plate as the “freezer” by stacking frozen food in it. Everything else is essentially refrigerator, with the caveat that items placed in the bottom will freeze if the rheostat is not adjusted just perfect. Again, much room for improvement. I monitor the temp in the refrigeration compartment with an indoor/outdoor thermometer. The system is usually able to keep the refer at 35-37 degrees while also keeping items inside the cold plate frozen. Except this past week, of course.
After that long explanation, I would appreciate any thoughts on the following questions/ideas. Pictures of your upgrades and or part numbers and links are welcome:
1. Has anyone upgraded to digital temperature controls? It would be great to be able to set the unit at one temp and have it adjust itself vs. constantly adjusting a knob.
2. What are the pros and cons of having a separate freezer compartment? I would have to fabricate an insulated bulkhead that I suspect would be similar to the one in the early hulls. It would be nice to have more freezer space.
3. Is a separate compressor and cold plate necessary for a separate freezer compartment? Seems like some early boats had one cold plate and a fan for spillover. How does that set-up work?
4. Has anyone built shelving or other storage solutions to take advantage of the unusual shape of the compartment?
Thanks in advance for any advice about these questions.
Best regards,
David Edgell
Blue Wing, C350 #442
We spent the past week on the boat icing things down in coolers and talking about upgrades to the refrigeration. Even if the quick fix works
I want to see if we can improve our system. I’ve read through most of the refrigeration forum related to temperature, controls and different configurations. What I have learned is that the refrigeration compartment in our boat differs from the early hulls, and maybe even some of the Mark II boats. First, the box has the improved insulation - when the system is working it stays very cold. Second, there is no bulkhead between the freezer and fridge compartments, and no fan. As such, the space is big and difficult to organize. We use the space inside the cold plate as the “freezer” by stacking frozen food in it. Everything else is essentially refrigerator, with the caveat that items placed in the bottom will freeze if the rheostat is not adjusted just perfect. Again, much room for improvement. I monitor the temp in the refrigeration compartment with an indoor/outdoor thermometer. The system is usually able to keep the refer at 35-37 degrees while also keeping items inside the cold plate frozen. Except this past week, of course.
After that long explanation, I would appreciate any thoughts on the following questions/ideas. Pictures of your upgrades and or part numbers and links are welcome:
1. Has anyone upgraded to digital temperature controls? It would be great to be able to set the unit at one temp and have it adjust itself vs. constantly adjusting a knob.
2. What are the pros and cons of having a separate freezer compartment? I would have to fabricate an insulated bulkhead that I suspect would be similar to the one in the early hulls. It would be nice to have more freezer space.
3. Is a separate compressor and cold plate necessary for a separate freezer compartment? Seems like some early boats had one cold plate and a fan for spillover. How does that set-up work?
4. Has anyone built shelving or other storage solutions to take advantage of the unusual shape of the compartment?
Thanks in advance for any advice about these questions.
Best regards,
David Edgell
Blue Wing, C350 #442