[C320-list] A/C Return Air Grill Size //// Another location

[Wash, Steve]

Rick,

I appreciate your suggestions ... Our boat is going to be in Michigan
City.  It will be nice to have A/C when it is 90/90!

I too have worried about the sound level with the air intake right by
your head.

Did you put an air return in the aft cabin, too?

Did you try to run a duct to the v-berth?  This looks really hard to do.
I think the new MkII's come with the duct pre-installed.  Lucky them!

About what size air intake grill did you use? 12x14 or 14x14?

I'll let you know how it goes if you like.

Steve
#1029



-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Rick
Sulewski
Sent: Friday, March 27, 2009 11:36 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] A/C Return Air Grill Size //// Another location

Steve,  

You may want to reconsider where you place the unit. Placing it above
the fuel tank will place the compressor and fan nearer to your ears and
this will definitely disturb your sleep.

I chose to place the unit in the larger cockpit locker and then cut a
return air duct at the foot of the aft cabin. It was an easy run to
place the exit grill just above the bread box with the water exit just
above the water line and a condensate tube with a gravity run to the
transom. All of the electrical wires easily run to the circuits at the
nav station including the controls. I also built a shelf above the unit
so I may place heavy items above the unit without damaging the unit.
Also insulted the unit and created a very tight air box between the
intake grill and the unit so that I do not suck up any air and humidity
from the locker which increased the efficiency of the unit and reduced
cycling. I also placed an air grill at the lower portion of the door to
the aft cabin.

Just something to consider, always raise the fan limits on a 16K unit
because running the fan motor too slow for a length of time will tax the
motor because it is running too slow and builds up heat in the windings.

Never regretted a 16K unit especially if one enters and exits the
companionway often up here in Lake Erie during July and August!

Rick
My-Ria 277

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Wash,
Steve
Sent: Thursday, March 26, 2009 12:11 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] A/C Return Air Grill Size

Bruce,

I had not planned to.  It is a self-contained unit and it will sit on
the shelf above the fuel tank.  I will cut a precise opening into the
aft cabin and put the grill there.

Have you done it a different way?

Steve
 

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of
bruceheyman at cox.net
Sent: Thursday, March 26, 2009 11:28 AM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] A/C Return Air Grill Size

Steve,
Are you going to have more than one air return?
Bruce
Somerset 671 SoCal
------Original Message------
From: Wash, Steve
Sender: c320-list-bounces at lists.catalina320.com
To: C320-List at Catalina320.com
ReplyTo: C320-List at Catalina320.com
Subject: [C320-list] A/C Return Air Grill Size
Sent: Mar 26, 2009 6:11 AM

Hi All,

I am away from the boat and am trying to size the return air grill for
the A/C we are installing.

We will put it in the usual place in the aft berth ... On the starboard
side ...

What is the largest grill that can fit there?

We are putting in a 16,000 BTU Marine Air unit.

Thanks,

Steve

#1029

PS - We will put a supply grill in the aft berth, the salon and (maybe
if we can run the duct) the v-berth) ... What sizes there?
 


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