'Add to Bukh header tank to heat calorifier

Scotty_Tradewind

Scotty_Tradewind

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I have a Bukh 24 with a header tank which does nothing other than assist cooling engine.

I've been thinking of heating the hot water in the calorifier. The calorifier is at present heated via either the Eberspacher Hydronic or an emersion heater when on shore power.

How can I pipe it so that both systems can be employed without one interfering with the other in any way?

I've always preferred the 'kiss' principles so if there is too much to go wrong then best forgotten, but if it can be done without problem and no sticky valves or dodgy electrics can endanger things then all the better.

all advice appreciated..

S.
 
If you have two coils on your calorifier, you should see that the Eber goes to one coil, and nothing to the other coil. This coil with no connection is the one to use for your calorifier heating from your engine. This is what I have with our VP2003, but don't know where to take-off from on a Bukh.
 
philip_stevens said:
If you have two coils on your calorifier, you should see that the Eber goes to one coil, and nothing to the other coil. This coil with no connection is the one to use for your calorifier heating from your engine. This is what I have with our VP2003, but don't know where to take-off from on a Bukh.
Click to expand...

Would that mean running separate pipes through from header tank to the unused coil in the calorifier?

Small problem is, engine in stern of boat, calorifier at t'other.

Thanks for this Vyv.
"Lots of info about adding a calorifier to raw-water cooled Bukhs at http://coxengineering.sharepoint.com...alorifier.aspx I have no experience with the indirectly cooled version but this is usually only a matter of adding fittings and hoses, the engine's own circulating pump will normally cope with the additional flow."

S.
 
Scotty_Tradewind said:
Small problem is, engine in stern of boat, calorifier at t'other.
Click to expand...

It should not be a problem, except for leading the hoses through all the furniture, but you might need to add a booster pump. My calorifier in Cecilia is about a metre higher than the indirectly cooled engine and a couple of meters along the boat. I put in a booster pump in case the engine's circulating pump was not enough, it also drives a heat exchanger in the wheelhouse. I bought a used Jaguar heater pump off Ebay like this one http://www.ebay.co.uk/itm/JAGUAR-XJ...arts_Vehicles_CarParts_SM&hash=item2a47707989 mine was £25.
 
vyv_cox said:
Lots of info about adding a calorifier to raw-water cooled Bukhs at http://coxengineering.sharepoint.com/Pages/Calorifier.aspx I have no experience with the indirectly cooled version but this is usually only a matter of adding fittings and hoses, the engine's own circulating pump will normally cope with the additional flow.
Click to expand...

http://coxengineering.sharepoint.com...alorifier.aspx wouldn't display but http://coxengineering.sharepoint.com/Pages/Waterpump.aspx does
as does this http://coxengineering.sharepoint.com/Pages/Calorifier.aspx :)

many thanks again Vyv

S.
 
Last edited:
Scotty_Tradewind said:
http://coxengineering.sharepoint.com...alorifier.aspx wouldn't display but http://coxengineering.sharepoint.com/Pages/Waterpump.aspx does
as does this http://coxengineering.sharepoint.com/Pages/Calorifier.aspx :)
Click to expand...

Seems to be a function of the ybw.com forum software. I pasted the link in direct from my website but the software has abbreviated it to the '...alorifier' words shown, which doesn't open. In the quote shown in this post, copied from yours, the links are correct although yours also says '...alorifier'. Strange.

Edit- no it doesn't. In the reply screen your two links are shown in full but when posted they are abbreviated.
 
vyv_cox said:
Seems to be a function of the ybw.com forum software. I pasted the link in direct from my website but the software has abbreviated it to the '...alorifier' words shown, which doesn't open. In the quote shown in this post, copied from yours, the links are correct although yours also says '...alorifier'. Strange.

Edit- no it doesn't. In the reply screen your two links are shown in full but when posted they are abbreviated.
Click to expand...
:)
 
Scotty_Tradewind said:
I have a Bukh 24 with a header tank which does nothing other than assist cooling engine.

I've been thinking of heating the hot water in the calorifier. The calorifier is at present heated via either the Eberspacher Hydronic or an emersion heater when on shore power.

How can I pipe it so that both systems can be employed without one interfering with the other in any way?

I've always preferred the 'kiss' principles so if there is too much to go wrong then best forgotten, but if it can be done without problem and no sticky valves or dodgy electrics can endanger things then all the better.

all advice appreciated..

S.
Click to expand...

I have a bukh 24 with freshwater cooing via the bukh heat exchanger etc., I take it you have two water pumps, one for the sea water the other for engine cooling circulation?
If you have two pumps on the engine then the saltwater one needs uprating.
 
robertj said:
I have a bukh 24 with freshwater cooing via the bukh heat exchanger etc., I take it you have two water pumps, one for the sea water the other for engine cooling circulation?
If you have two pumps on the engine then the saltwater one needs uprating.
Click to expand...

Gordon Bennett!!!.....(for our younger and foreign readers :) http://www.phrases.org.uk/meanings/gordon-bennett.html )
I really should know my engine better, but two pumps??

I'll have to take photos and get my book of words from the boat and report back.

thanks robertj

S.
 
Last edited:
robertj said:
I have a bukh 24 with freshwater cooing via the bukh heat exchanger etc., I take it you have two water pumps, one for the sea water the other for engine cooling circulation?
If you have two pumps on the engine then the saltwater one needs uprating.
Click to expand...

Don't understand that. Why would the seawater pump need to be uprated when it's the circulating pump that will supply water to the calorifier? As I wrote earlier, he might need a booster pump as his calorifier is a long way from the engine, but in most cases this is unnecessary. It's exactly the same situation as a heater in a car.
 
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