I have done a flush on a few systems, my previous boats have had only a single unit. With the 440, we have 3. So, I wanted to do something different. I took your idea and made it semi permanent. Just before the thru hulls, I added a "T" and a brass valve (3, one on each). I then ran 3/8" hose back to the engine bay. I already had a "T" on the intake hose just before the strainer. I have a bucket with a bulk head fitting at the bottom with a valve. I take the hose from the thru hulls (all three are combined with 2 more "T"s) and drop it in the bucket. I then attached the hose from the bottom of the bucket to the "T" in front of the strainer (it has a garden hose fitting). I partially fill the bucket with Barnacle Buster and I am ready to go. I turn one unit on AC and one on heat and that starts the flow. I then open and close valves until it is a closed system. I monitor the temp of the water/Barnacle Buster and turn the heat on and off as needed. This keeps the temperature of the water at about 80 degrees. After an hour, I just open and close valves to get it back to normal. It works great. I have pics if you want.
This is probably the first vid I've seen of someone flush a boat AC system. That DIY hack is fantastic - I'm surprised the system is not designed for easier maintenance/flush. Is this just another cost-cutting avenue boat builders take? I.E. leave it to the owner to figure out the AC maintenance? (at least with the Yanmar, oils and filters are fairly straight forward). Or you could have flushed overboard if 12nm offshore? On our residential AC, I just flush water/vinegar down an intake spout, and change the air filters. 👍
Is this heater lines coming off of your engine coolant system? Not sure where you are getting the heat/cool from. Do you guys have a water maker? What was behind your head, some kind of mast stay? Anyway, nice manifolds.
Oh noooo!!! Now you ruined it !!!! No bikini shots .....shock and horror 😱😂.......glad you guys are back .. not sure if this is the first vid for the year...
I have done a flush on a few systems, my previous boats have had only a single unit. With the 440, we have 3. So, I wanted to do something different. I took your idea and made it semi permanent. Just before the thru hulls, I added a "T" and a brass valve (3, one on each). I then ran 3/8" hose back to the engine bay. I already had a "T" on the intake hose just before the strainer. I have a bucket with a bulk head fitting at the bottom with a valve. I take the hose from the thru hulls (all three are combined with 2 more "T"s) and drop it in the bucket. I then attached the hose from the bottom of the bucket to the "T" in front of the strainer (it has a garden hose fitting). I partially fill the bucket with Barnacle Buster and I am ready to go. I turn one unit on AC and one on heat and that starts the flow. I then open and close valves until it is a closed system. I monitor the temp of the water/Barnacle Buster and turn the heat on and off as needed. This keeps the temperature of the water at about 80 degrees. After an hour, I just open and close valves to get it back to normal. It works great. I have pics if you want.
This is probably the first vid I've seen of someone flush a boat AC system.
That DIY hack is fantastic - I'm surprised the system is not designed for easier maintenance/flush.
Is this just another cost-cutting avenue boat builders take? I.E. leave it to the owner to figure out the AC maintenance? (at least with the Yanmar, oils and filters are fairly straight forward).
Or you could have flushed overboard if 12nm offshore?
On our residential AC, I just flush water/vinegar down an intake spout, and change the air filters.
👍
Thanks, it’s been a big learning curve on care for the boat. We try to find smart solutions.
You got a link to that hose adaptor backwash tool at 1:16 into your video?
It was given to me, I think you need to make it at the hardware store
I’ll be fixin’ to do that soon too. How often should that be done?
It depends on how much growth you get in the lines. We already had to
back flow one unit to clear a problem. About 18 months for us
Is this heater lines coming off of your engine coolant system? Not sure where you are getting the heat/cool from. Do you guys have a water maker? What was behind your head, some kind of mast stay? Anyway, nice manifolds.
We have 3 Dometic AC units that also work as a heater. The engine coolant line is a separate system.
Oh noooo!!! Now you ruined it !!!! No bikini shots .....shock and horror 😱😂.......glad you guys are back .. not sure if this is the first vid for the year...
It’s been cold but we are turning the corner. Going to be a big push to try and cast off the lines this year