Mixer taps

MAN don’t do calorifers , outlets btw
You can obviously keep the in/out caps along the cooling circuit closed and not use them, which makes good sense if you have a domestic heater which can only handle electric heating.
But the connections are available in MANs for good.
Actually, I can't recall to have ever came across any engine where they aren't.
 
@ paul rainbow
MAN don’t do colifer circuits .I have Googled Cummins 425 , the QSB 6.7 in Boubas boat and there’s no mention on any site in there own they do .Not saying they don’t btw .

Thats why we need a pic of the set up ASAP or a pic of his Beny manual on the relevant “ hot water page “ .

Other big motors like MTU , the larger CAT s like MAN s don’t do extra pipe age off .

Appreciate toy engines like VP and others under 5 L do as its a sales point in compact packaging.Nothing critical in that .Don’t read any thing into this , that’s just how it is .

Otherwise we all 9issing in the wind .Cos we don’t know what he’s got and he’s not told us .
 
My calorifier is Quick (Italian) it is heated from the engine or by 230v.
It seems the problem is electrical and I will take another look tomorrow. Just had a cold shower
 
Nothing critical in that .Don’t read any thing into this , that’s just how it is
Agreed, nothing critical. BUT, it's NOT how it is.
Happy to post a pic of the heater pipes on my MAN engine later, when I'll be back onboard.
And since I have also the manual of YOUR engines, I might be able to post a drawing of those connections too.
 
Nott sure how a truck reference works in this thread .Do expand Ps .
Simple: if it were for boats alone, MAN wouldn't even exist.
The overwhelming majority of their engines is built for trucks, and while obviously those are not marinized, the block and its closed cooling circuit (aside from having a radiator instead of a HE) is exactly the same.
 
You can obviously keep the in/out caps along the cooling circuit closed and not use them, which makes good sense if you have a domestic heater which can only handle electric heating.
But the connections are available in MANs for good.
Actually, I can't recall to have ever came across any engine where they aren't.
They are in pairs .
Highly slashed with sensors , arguably too many .Which is great on the screens if you ( the helm ) know what you are looking at , comparing .
But alas there a lot of numbties out there .😅 who don’t know what they ate looking at .Nothing earth shattering there btw .See this thread !

So a califier on one engine will possibly, said possibly skew a timed parameter .
Its not the absolute value , it’s also the time to reach / sit within a pre prescribed range of values .
Take say ….. “ coolant expansion tank pressure “ Has to reach iirc 250 - 900 mbs within a certain time without calling out an alarm .So if that engines having ( via extra pipes ) heat a clap cold calofer it most likely will drop out of said parameters .= alarm sounds on the helm .

Engines running blind need not have this issue .
 
Agreed, nothing critical. BUT, it's NOT how it is.
Happy to post a pic of the heater pipes on my MAN engine later, when I'll be back onboard.
And since I have also the manual of YOUR engines, I might be able to post a drawing of those connections too.
An old pre MDDS . F all sensors compared to modern .

Aside OP s finally ( in a forum Bouba esq fashion ) fessed up his Cummins has the pipes , he reckons.No pics though.
 
Nonsense.
If that were true, all those MAN trucks you see on the road would have no cab heating.
Thought they used diesel , Erb type and those with fridge units further diesel powered units , cooling granted but they don’t when parked up use the std engine heater matrix , which I think you are referring too ?Still puzzled why you have dragged trucks in this in m taken the time ?
 
They are in pairs .
Highly slashed with sensors , arguably too many .Which is great on the screens if you ( the helm ) know what you are looking at , comparing .
But alas there a lot of numbties out there .😅 who don’t know what they ate looking at .Nothing earth shattering there btw .See this thread !

So a califier on one engine will possibly, said possibly skew a timed parameter .
Its not the absolute value , it’s also the time to reach / sit within a pre prescribed range of values .
Take say ….. “ coolant expansion tank pressure “ Has to reach iirc 250 - 900 mbs within a certain time without calling out an alarm .So if that engines having ( via extra pipes ) heat a clap cold calofer it most likely will drop out of said parameters .= alarm sounds on the helm .

Engines running blind need not have this issue .
I think the engine manufacturers have already figured that out and will have built the timing delay into their algorithm which is why the problem doesn’t exist
 
I think the engine manufacturers have already figured that out and will have built the timing delay into their algorithm which is why the problem doesn’t exist
The sensors aren’t handed .
Nor are the main frame boards .Just STd parts equally fitted to port or stb .No mention of its heating a colifer .
 
My calorifier is Quick (Italian) it is heated from the engine or by 230v.
It seems the problem is electrical and I will take another look tomorrow. Just had a cold shower
I've had these sorts of problems before - I keep spares - so that I don't have to have a cold shower.
And even if I didn't have the spares, I would, by now, KNOW what the problem was.
And as for the dog - I would simply push him out of the way - my hot shower is FAR more important that the dog!!
 
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