I'm in the process of installing refrigeration for my 1987 Hunter Legend 35. It's a big enough project and I've ended up tearing most of the galley apart to get at the icebox to correct/improve the insulation that I thought I'd post a thread in case it's helpful for others with the same boat (or any boat!).
Some background:
I'm not 100% sure of my insulation plan yet. It will likely start with peeling the old insulation off. Once that's done I could re-spray new insulation (messy and tricky to get where it's needed) or adhere 2" (more in some places) insulation board (polyisocyanurate, still tricky because of the stupid shape of the ice box). I might consider trying to unscrew it from the counter so I can pull it out and get at it properly to apply the insulation.
Here are a few picks of the galley with the icebox fully exposed:
Chris
Some background:
- I'm installing an Isotherm Self Pumping unit with an evaporator.
- The icebox is quite large, about 8cf by my calculations
- The shape of the icebox is totally wacked out. They decided to fill the entire available space (good), but contoured it around the hull, liner protrusions, followed the angled back of the settee, and all other manner of shapes and angles, all of which will cause a headache in future steps
- The cooler is VERY deep. Very hard to reach the bottom without lying on the counter
- The construction of the galley cabinetry around the icebox was clearly done in a way that was never intended to be taken apart. Not easy to take apart, and MANY hidden, inaccessible screws.
- The icebox will NOT fit through the companion way, so work has to be done on the boat.
- Insulation is sprayed on the outside of the inbox
- Overall, the insulation is mostly 1" - 1.5" thick (too thin)
- Almost all of it has detached from the icebox. This renders it almost useless as there is up to 1/4" gap between the insulation and the icebox on almost all sides. It will convect away the cold easily, but made worse by ...
- The entire top ~2" of icebox has no insulation. They ground the foam away to be able to access the screws holding it to the underside of the counter
- The top of the icebox has very little insulation,maybe less than 1"
- They ground the daylights out of the insulation to make it fit. Maybe necessary in a few tight spots, but other places they did this, there was lots of room.
- The top lid has no proper air seals
- The icebox has a drain. I had previously added a hose with a trap to prevent cold air from draining out of the icebox
I'm not 100% sure of my insulation plan yet. It will likely start with peeling the old insulation off. Once that's done I could re-spray new insulation (messy and tricky to get where it's needed) or adhere 2" (more in some places) insulation board (polyisocyanurate, still tricky because of the stupid shape of the ice box). I might consider trying to unscrew it from the counter so I can pull it out and get at it properly to apply the insulation.
Here are a few picks of the galley with the icebox fully exposed:
Chris