Running the A/C at the Dock

Gary
Do you have a link to doing a flush on the system or can you run through the procedure? I assume some sort of acid is probably involved?

Rick
 
Can you guys give me your opinion on difference between two modes DEHUME vs. COOL with higher teps. When I have my a/c running at 77F it kicks off in about 15-20 min interval and compressor runs for like 3-5min (of course this will change depending on the outside temps). I just tried the Dehume mode and like the manual says, it runs fan at high speed, then compressor kicks off for at least 10min, then system shuts down until next cycle. I felt like if I keep the setting on COOL and crank the temps to mid 80s the system doesn't have to work as hard as in the dehume mode. Am I wrong? Is there any special advantages for DEHUME mode?

Thanks,
Alex.
 
I just used Rydlyme on my mains- never thought about flushing the A/C systems with it, great idea.

As far as the chlorine tabs go, not sure about that one. Dunno if the chlorine could affect/weaken the hoses. Keep in mind that when the pump is not operating the water in the strainer and hose will be subjected to extremely high chlorine levels due to the tablets sitting in stagnant water. Maybe a good idea, maybe not...
 
Alex F said:
Can you guys give me your opinion on difference between two modes DEHUME vs. COOL with higher teps. When I have my a/c running at 77F it kicks off in about 15-20 min interval and compressor runs for like 3-5min (of course this will change depending on the outside temps). I just tried the Dehume mode and like the manual says, it runs fan at high speed, then compressor kicks off for at least 10min, then system shuts down until next cycle. I felt like if I keep the setting on COOL and crank the temps to mid 80s the system doesn't have to work as hard as in the dehume mode. Am I wrong? Is there any special advantages for DEHUME mode?

Thanks,
Alex.
Click to expand...

I'm pretty sure the A/C works a lot less in the Dehum mode. I don't have the manual with me, but I remember it running a lot less than I wanted it to in that mode, so I keep it on in the 80's.
 
24/7/365. 78 in the summer until we go out then it goes down to where ever it is deemed comfortable. 65 in the winter coupled with a cafromo heater and the cabin stays dry year round.
 
John,

Does it mean that whatever temp you set it, the DEHUME mode will try to keep that temp?

When I tried the dehume mode, although it had the compressor running for 10min or so, it then stopped and didn't come one again. I wasn't sure if it's normal.

Thx,
Alex.
 
I think the HU mode runs the air a few times an hour, rather than attempt to hold the temp at a specific temp.
 
my understanding of HU is that it runs the compressor for a fixed amt of time (you cant change it). then it runs the fan for a fixed amt of time to keep air circulating. then it shuts off and repeats at fixed intervals. it is not to maintain a temp. it is designed to move air inside the boat through the compressor to extract some moisture. it isnt as sophisticated as the rolling box many of us have in our basements, where you can set the actual relative humidity you want to attain.

but what do i know? one of my ac units still has the old 3 knob setup! the one that does the forward stateroom and head is an smx II and i had the digital pad on my previous boat. maybe one day i'll convert to digital but the three knob-er works great and i dont need the fully automatic setup since i dont run it while away (we debated this earlier).
 
Ron's right. The system does not attempt to hold a temp in Dehum mode. It runs a cycle to keep the air dry and circulating.
 
Hampton said:
Ron's right. The system does not attempt to hold a temp in Dehum mode.
Click to expand...

NOR does it attempt to maintain a fixed relative humidity. There is no such sensor. It is purely a timing function, but one that can be altered. Check your operation manual for timing settings and then it's trial and error.
 
The chlorine in the strainer basket is interesting. As a former pool owner, consider that there are two general type of chlorine tablets available: Fast tablets are like 30% chlorine and dissolve in few minutes and slow tabs, that are 90% chlorine but dissolve over days.
My pool had a automatic chlorinator, basically a strainer basket that I filled with slow tabs once a week. I use fast chlrine for shock treatments.

So in this application you could do either a small piece of a slow tab and have a constant cleaning action or once in while just add some shock and kill everything. If you shock, do it away from the dock becuase the smell will be annoying.

Finally, chlorine is very corrosive every hose, metal part and even plastic part of my pool system had to be replaced eventually. It was constant battle.
 
My dealer set up my 280DA and specifically told me to leave it on all the time in the Texas summers. The interior will last much longer that way.
 
you'll all be happy to know that when i left my boat this afternoon to come home for the night, i the AC on - both units. i'll be back tomorrow at 10 am to see if it sunk. i still aint leavin it on all week. (ps: when i got there this afternoon the salon was a tepid 115 degrees F!

i have come to the dark side, at least for the short term.

emperor12.jpg
 
I've tried using the HU mode when left the boat last Sunday. When came back this weekend the unit was showing 80F in manual mode instead of HU. My guess is that during the storm there was power outage and when the power was returned the unit restarted in the default mode. If this is the case, I don't think it's good since the unit remains constantly on.

Is there a trick to change the default operation to have the unit always start in HU or at least in AUTO mode with higher temp setting (mid 80s)?
 
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