Rectangular Calorifier

[richardsnowstar]

I am looking for a calorifier to replace the gas water heater on my Southerly 115. It would be good to make use of the space where the old water heater was. Can anyone recommend a source for rectangular calorifiers?

Thanks in advance.

Richard

 

[Ridax]

Isotemp slim square. Not gas though.

 

[CaptainBob]

I just replaced our old cubic Seaward F1150 with a 40 litre Quick Nautic drum shaped one. I could have bought a direct replacement for the cubic one from these guys who were very helpful by email:

http://www.mackengineering.co.uk

But the Quick Nautic was cheaper and after all, I was replacing the Seward F1150 because it was leaking.... but then again it may have been good for 30 years before it leaked!

Do bare in mind though that you're not really getting the maximum out of the space as the actual water container inside a rectangular/cubic calorifier is actually cylindrical anyway.

 

[CaptainBob]

Ah sorry, just read the gas bit. The Seaward is not gas either.

 

[landlockedpirate]

I may be wrong, but during research for a new calorifier last year I found that all the rectangular ones I found were actually drum shaped inside.

 

[prv]

Ah sorry, just read the gas bit. The Seaward is not gas either.

I didn't think he was looking for the new unit to be gas-fired, just to fit in the space of the old gas unit.

Pete

 

[richardsnowstar]

Thanks and further clarification

Thanks to all for the comments so far. I am shocked to hear that the water cylinder in a rectangular unit is drum shaped, seems to defeat the point. I shall investigate this further.

I am not looking for a gas powered replacement as it doesn't seem a very good idea. I am looking for an electric replacement to occupy the same space. My engine (a Bukh 36) is raw water cooled so I may look to connect that up in the future but initially I want an eletric powered calorifier.

The other concern is the existing gas heater is at head height. Will this be a problem?

Thanks,
Richard.

 

[vyv_cox]

The effectiveness of the domestic water system will not be affected by having the calorifier high in the boat. The normal positive displacement pump will cope with the additional head quite easily. The weight of water of a large calorifier might be an issue for the fixings.

Once you come to heat it with your Bukh you may struggle a little to fill the hoses with water. You will probably need to back-fill from the calorifier, then get the hose on the nozzle fast. It can be done, though.

You may like to look at the calorifier section of my website, here, where there is a good deal of info on fitting them to raw water cooled engines. Although some photos on the site are still missing, this page is now complete.

 

[richardsnowstar]

Vyv, Thanks for the info. The link to your site doesn't seem to be working. Or the link on Google.

Richard.

 

[vyv_cox]

Vyv, Thanks for the info. The link to your site doesn't seem to be working. Or the link on Google.

Richard.

Thanks. It's a complete mystery to me, the site opens for some users and not for others. You should be able to get in using www.coxengineering.co.uk, then engine>calorifiers

 

[michael_w]

Force Ten do square ones.

 

[landlockedpirate]

Force Ten do square ones.

Yep, but they are barrel shaped inside the case.

 

[pvb]

I may be wrong, but during research for a new calorifier last year I found that all the rectangular ones I found were actually drum shaped inside.

I think you are wrong. The only rectangular calorifier I can think of is an Isotemp, and it most certainly isn't drum-shaped inside.

 

[landlockedpirate]

I think you are wrong. The only rectangular calorifier I can think of is an Isotemp, and it most certainly isn't drum-shaped inside.

That one does like it may be rectangular, but all the ones i could find were not. Here's the proof, nice square shape to fit neatly in the engine bay, but barrel inside.