[C320-list] Water heater replacement now coolant.....

[Doug Treff]

Jamie,

I can't help with sources, other than Amazon, (I assume you've tried BayShore, Fawcetts, West Marine).

What I do know is that Yanmar has published a list of satisfactory alternatives, linked below from the C320 site. However, If you switch brands, you will need to do a super flush (many flushes with fresh water to get the remnants of the old stuff out).

The Service Bulletins - Scroll down to page 4 for the coolant info
https://www.c320.org/filemgmt_data/files/yanmar_bulletins.pdf

Also available on the C320 site is a procedure for properly flushing the engine:
https://c320.org/article.php/20060212151611361

--
Doug Treff
doug at treff.us

On Sun, May 23, 2021, at 6:20 PM, Jamie Pett wrote:
> Thanks for the assistance. I am struggling mightily. Got the old heater 
> out but decided it would be the moment to drain and replace the motor 
> coolant. Got it drained but cannot find replacement Yanmar coolant - 
> anyone know where that can be found in the Annapolis area ? 
> 
> 
> 
> Sent from my iPad
> 
> 
> Be well. Be safe. Be kind.
> 
> R. JAMES  PETT  \ AIA 
> Principal
> 
>  D. 410.646.8301
> C. 410.446.8515
> www.JP2architects.com
> > On May 21, 2021, at 9:26 AM, Jamie Pett <JPett at jp2architects.com> wrote:
> > 
> > John - Thanks for the help. Replacing the hoses sounds like a good idea - do you recall what length you needed ? 
> > 
> > So the heater hoses are the closed engine loop, correct ? After the replacement I assume you just top off the coolant ? 
> > 
> > Jamie Pett
> > JP2 Architects
> > 
> >> On May 12, 2021, at 9:07 AM, John Meyers <jcmeyers7 at gmail.com> wrote:
> >> 
> >> Jame,
> >> 
> >> One more thing.....  Keep the coolant from the hose, if you want to anyway,
> >> to be replaced after the new heater is connected. There might be a quart or
> >> two. Run the engine for a couple minutes and the engine coolant level
> >> should go down so you can add the old or new coolant. This may take a
> >> couple cycles to get all the air out of the new lines etc and to get the
> >> coolant all back in.
> >> 
> >> As far as the reattaching the rear bracket - I don't remember that being a
> >> problem. As a disclaimer - "Your experience may be different."
> >> 
> >> If I think of anything else I'll let you know.
> >> 
> >> John Meyers
> >> 
> >>>> On Wed, May 12, 2021 at 8:40 AM John Meyers <jcmeyers7 at gmail.com> wrote:
> >>> 
> >>> Jamie,
> >>> 
> >>> I did this a couple years ago.
> >>> 
> >>> Good on the bypass. But I disconnected the end of one hose from the engine
> >>> and allowed fluid to drain into a pan. Then I took off the other hose from
> >>> the engine. Putting a plastic bag over one end and punching a hole in the
> >>> bag I blew out any fluid remaining.
> >>> 
> >>> Obviously , there are some plumbing and other stuff that needs to be
> >>> removed such as electrical.
> >>> 
> >>> There should be enough hose between the engine and heater that when you
> >>> start to pull it out and you can disconnect hoses from heater.
> >>> 
> >>> Getting the old heater out is somewhat cumbersome with lifting and
> >>> twisting but not a huge deal. Same for putting the new one in.
> >>> 
> >>> While the heater was out I replaced the hoses from the engine to heater as
> >>> they were over 21 years old. This was not a big problem as the cubby below
> >>> the oven can be removed to give hand access to the hoses to direct them
> >>> from A to B.
> >>> 
> >>> Hope this helps.
> >>> 
> >>> John Meyers
> >>> Wind Chime #406
> >>> Muskegon, MI
> >>> 
> >>> On Tue, May 11, 2021 at 7:09 PM Jamie Pett <JPett at jp2architects.com>
> >>> wrote:
> >>> 
> >>>> Hi list - hope everyone is well.  So I am tackling a replacement of my
> >>>> hot water heater on Bella Luna and wonder if anyone can provide a bit of
> >>>> guidance. Ordered a replacement unit -same Seaward 6 ga.  that is currently
> >>>> in the boat.
> >>>> 
> >>>> Pulled galley cabinet unit, tied hot and cold water lines together as a
> >>>> temp.bypass, and disconnected power.
> >>>> 
> >>>> So original Seaward 6 ga.unit largely disconnected but did not yet pull
> >>>> the heat exchanger lines off.  Current question - anticipating when I pull
> >>>> those the coolant from the engine will drain out ? Bigger question is after
> >>>> getting the new unit connected, how do I purge the air out of the coolant
> >>>> loop ?
> >>>> 
> >>>> Oh, and any suggestions on how to get the rear mounting bracket
> >>>> re-fastened?
> >>>> 
> >>>> Any advice appreciated. Thanks.
> >>>> 
> >>>> Jamie Pett
> >>>> Bella Luna
> >>>> C-320 # 614
> >>>> 
> >>>> Sent from my iPad
> >>>> R. JAMES  PETT\AIA
> >>>> Principal
> >>>> 
> >>>> D. 410.646.8301 C.410.446.8515
> >>>> 2811 Dillon Street, Baltimore, MD 21224
> >>>> E.JPett at jp2architects.com
> >>>> 
> >>>> 
> >>>> 
> >>>> JP2 A R C H I T E C T S
> >>>> 
> >>>> 
> >>>> 
> >>>> 
> >>>> Be well. Be safe. Be Kind.
> >>>> 
> >>> 
>