Good afternoon all. Wondering if I can buy just new condensers for my 1975- 41' AC system?
The cooling units and fans are still operational as I jumped them out and I have pressure tested the units to make sure there were no leaks. The thermostats and other controls are still in place. Not looking for original parts, just compatible replacement condensing units for a split system Heat/AC
Also anyone know the original btu size for the main salon as well as the master stateroom?
Kevin, Before I answer your question I have one for you. I have the same boat different year (1977) look on condenser and find the refrigerate that is used. I believe it is r-22 i was surprised to find this on my boat as i was expecting r-12. R-22 is difficult to find and very expensive and would hate to see you spend the resources on something that will be difficult to maintain. I believe my master suite was 12,000 btu and the main 16,000 btu and forward cabin 9,000 btu. I believe the best bet is to replace the unit with a stand alone one piece package unit that will easily fit in the over head space above the forward bunk. they range in price around 1500-2000.00. this is with all new controls and equipment. this will remove your units from the bilge area and make a better system that is more efficient and quieter. This is the route I will be taking this coming fall as my refit has taken me in a unexpected direction.(go figure).
I like what Mike said about just replacing the condensers with the R 417. It makes it a easy swap out. YOU STILL NEED A AC TECH. one thing you need to look into before going this ....is the 3 way valve and the metering device in the condenser or in the air handler...IT MAKES A HUGE DIFFERENCE. My 3 way valve is on the condenser...I have seen photos of new ac units and it looks like the 3 way valve is on the air handler????
Be careful of this.
Words to the ??? about the self contained units (SCU). Somewhere long ago I posted my experiences removing the wart, a Coleman A/C installed by the PO in the forward hatch. I installed a self-contained A/C with electric heat rated at 20K btu. Overall I have been very happy with the unit and on a 35 there were few choices given the available space. Caveat is they are noisy! The ducting to the spaces carries the sound as well as the air. The upside is that you can hang meat in the salon in the summer and in 20 minutes you can be in shirt sleeves in the winter when it is 20 degrees F outside. Until this point I was disappointed that the unit was not reverse cycle. Getting warm on board when the harbor is iced over is a real treat, a treat not available with reverse cycle! I have decommissioned the boat in early December with the aft curtains down, the engine hatches and the companionway door open wearing only a sweatshirt thanks to the electric heating side of the SCU.
If you have the remote A/C I would recommend maintaining the system you have. It is quieter than the alternative, is installed and was designed for the space. Replacing with an SCU will require ducting, think 4" or larger, addition of vents, probable removal of existing lines and fan powered radiators.
Timothy, in your experience, the self contained units are noisier than OE?
Q, the self contained have the single squirrel cage fan to distribute the air which provides all the noise. The ducts carrying the air carry the noise. With the condenser in the bilge and the radiator remote you only have the fan sound of the radiating unit.
Another item I forgot to mention is potential for odor. The seals for the return air need to be very good or air from the bilge will get into the circulation.
Good Morning CCC members,
As some of you may have seen Lisa and just purchased this beautiful 1980 410. All in all she was sitting for 8 years. I have brought back both 454 (Nicely updated in 2000 with Marine Power full Fuel-injected engines. Both run great and I now need to tighten the stuffing boxes as when we moved her they leaked a bit more than forum indicates they should.
HEATING- All three systems operate but the salon unit cycles down and will stop heating and then tries to restart but will only come back on if I turn it off allow it to sit and then restart. IS this dirt? I know these have not been serviced in a while so could that be it? When the salon unit is on it is fantastic. These must be electric heating systems (I think..) My question is why does the compressor have to run when the heat is on?
Is this simply a service issue or should I have a Marine heat/AC representative service these? I am very good with tools and capable BUT not a Heat/Ac expert.
I am based in Knoxville (Not there yet have to move her 17 hours!). I would like to get the heat back to operational before the move.
Thanks for the help.
John, the heat and cooling is reverse cycle thus the compressor runs. My guess is the refrigerant is low.