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Marine Air Conditioning System Maintenance

Without water flow….You have NO cooling !
Service people on the docks (at least the better ones) can walk down the dock during the summer and tell which boats they are likely to be getting a call from next just by the flow of water (or lack of) going overboard on each boat….Lack of seawater flow can cause other problems besides loss of cooling…

Ac System Icing

A/C System Ices Up

I notice from the Google searches…That A/C System Icing is a search done often.. Though there can be many reasons for system icing…There are a few that the DIY boater can rule out before calling the service guy ( I can discuss other reasons in the forum but here are a few of the basic answers) Direct Expansion […]

To 2010 Boat/Yacht A/C Owners

Hello All…A New Year again…Hopefully yours was good…. I started this site last year to “put my feelers out”  about what owners and captains may want to learn and share about marine  a/c. The support has been more than I ever expected… So… My New Year resolution to you is expand the site we created…Because of your feedback I am […]

More on Hold Over/Cold Plates

In another forum I visit…I answered a post http://www.boatered.com/forum/topic.asp?TOPIC_ID=130856 from a gentleman that was considering replacing his 12v standard plate system with a like system utilizing a Hold Over/Cold Plate in his factory (boat builder) built top loading box…The system he was considering is one of the package type systems offered today, and below is a copy […]

Cool

Pumps & High Pressure…With Manual Controls & Hi Pressure Switch

Recently I was on a boating message board and came across a discussion about pumps and some troubles folks had experienced. The original poster had a March magnetic drive pump that would not pump water, and after the usual back flush & priming sugguestions he could still not get it to pump water…Just before I read […]

Marine A/C Pumps and Pump Relays

We have touched on seawater cooling and lack of…Now what about if you have a intermittent problem, or the pump won’t start at all ?

In boats with multiple systems running on one seawater pump there is most likely a Pump Relay to receive a signal from each system to tell the pump it needs to run…That is unless it has been bypassed and the pump runs 24/7 from the breaker ( I see this done fairly often)

Lets start with the breaker in the main panel…Most are labeled A/C pump or similar…Some boats may have the pump breaker tied in with one of the A/C system breakers (Ocean Yachts for one used to connect the pump to the Main Salon A/C Breaker) but most should have a stand alone breaker…

Chilled / Tempered Water Marine Air Conditioning A/C

Dometic (Cruisair & Marine Air) tempered water systems are built for larger yachts and commercial craft.

These two-stage systems use circulated water as a heat transfer medium. The warmed or cooled fluid is piped through a closed loop from the tempering unit in the engine room to any number of air handling units throughout the boat.

Dometic’s unique reverse-cycle design provides very efficient heating, even in relatively cold seawater temperatures, in many cases eliminating the need for separate heating systems.

Innovative System Cools Boaters on Deck with Directional Jets of Chilled Air

Dometic has unveiled a new type of air conditioning system designed to provide cool relief for boat passengers in open spaces above decks. Developed through innovative engineering, this high-efficiency system blows chilled air through high-velocity directional jets aimed at people in the helm station, outdoor salon, fishing area or other locations. Just when rising temperatures […]