Mixer taps

Ok…last night before bed, I tested the water out of the bathroom mixer and it was piping hot !!!…great ! The best boating problems are the ones that fix themselves.
This morning…disappointment 😧🥲 luke warm again
First I will go to the plumbing plan in the manual then I will try all your suggestions.
Any new ideas keep them coming because I won’t start work until my body has sufficiently limbered up😳
 
Have you bled all the taps from the closest to the hot water heater to the one the furthest away. Open each fully then the next etc etc. I had something similar after I had changed my element.
 
Ok quick update…tried bleeding..then I drained a bit of water from the tank (put the floor board back on before I read that Porto asked for a photo)
The water was stone cold…turned up the thermostat (which I think is just a cold water mixer) checked some electrics and then waited to see if it heated. No it didn’t…so switched off the hot water at the main power board.
Will do some more research but it looks like another element out job…the element was less than a year old so I am a little upset…can’t decide to do it here or wait till I get back to my home port
Boats…what a pain
 
Well at least you can run the engine to get warm water for showers etc. That’s what I did when ours went (Saturday of course) until I could get a new element.
 
Bouba said:
Ok quick update…tried bleeding..then I drained a bit of water from the tank (put the floor board back on before I read that Porto asked for a photo)
The water was stone cold…turned up the thermostat (which I think is just a cold water mixer) checked some electrics and then waited to see if it heated. No it didn’t…so switched off the hot water at the main power board.
Will do some more research but it looks like another element out job…the element was less than a year old so I am a little upset…can’t decide to do it here or wait till I get back to my home port
Boats…what a pain
Click to expand...
Do you have a multimeter?
 
Bouba said:
Ok quick update…tried bleeding..then I drained a bit of water from the tank (put the floor board back on before I read that Porto asked for a photo)
The water was stone cold…turned up the thermostat (which I think is just a cold water mixer) checked some electrics and then waited to see if it heated. No it didn’t…so switched off the hot water at the main power board.
Will do some more research but it looks like another element out job…the element was less than a year old so I am a little upset…can’t decide to do it here or wait till I get back to my home port
Boats…what a pain
Click to expand...
maybe it's the thermostat...as Hurricane says, you need a multi meter
 
Bouba said:
As I recall, the thermostat goes inside the element but is accessible from outside the tank.
I probably do have a multi meter on board
Click to expand...
Worth checking b4 you drain water off..you can 'short it' just to test it...but only for test dont leave it !!!
If it is the element its possible electrolysis etching away at it,if so you should make sure it has a double pole isolation switch.
 
I will tackle it this afternoon...the tank is under the floor of the hallway outside the dogs bedroom...right now he’s using it so he can’t be disturbed
 
Portofino said:
Ours isn’t engine heated .
Just a plain domestic water heater running on AC with a thermostat on the outside you can alter .So it’s only got an element .

We have an inverter connected which is usually off .As @ anchor the geny can provide AC .

Also from experience berthing in Porquerolles the shore power AC is patchy switches off intermittently, so if he’s been there a while …….it might cool down .

He hasn’t specced in his posts exactly what system ( s) he has .We know it’s a single Cummins engine , but no mention YET of engine draw off hot water to heat a colorifer .You are assuming he has one .I am assuming he hasn’t as no mention of his set up in detail .Which would help .

So the default must be a AC element tank that refills with cold automatically thermostatically controlled like a house .

MAN don’t do calorifers , outlets btw . I know smaller VP do them .

We will see like most tech problem threads what additional info is drip fed ( scuse the pun ) in later that was omitted in the opening post , and would have been helpful in giving advice.
Click to expand...

Calorifiers have nothing whatsoever to do with the engine manufacturer.

I assume he has a calorifier, because on a boat, that's what it's called !

The fact you have a very basic setup has no relevance, it's pretty rare to have a hot water system that isn't heated by the engine and a total waste of energy. Mine is heated by either/both engines and has been since the boat was built in 1988. I have never owned a boat that hasn't heated the water by the engine.

Your claim that
the default must be a AC element tank that refills with cold automatically thermostatically controlled like a house"
Click to expand...

is ridiculous. The most common system would be one where the engine also heats the water. Anything modern will have a thermostatic mixer valve. It is, and has been for some time, a legal requirement for domestic hot water systems to be fitted with mixer valves (not retrospectively). All of the decent calorifiers are fitted with them as standard these days.


The above does not guarantee the OP has a system where the water is heated by the engine or that he has a mixer valve, but as he has stated all water outlets throughout the boat are affected, it's worth mentioning.
 
billskip said:
Mine didn't...but maybe some systems do.
Click to expand...
No maybe about it, do you think i just made it up ?

"SureCal calorifiers come completely assembled ready for quick and easy installation. The immersion, pressure release valve, barbed engine coil connections and stainless steel fixing brackets all come as standard. A thermostatic mixer valve is fitted as standard for the safety of those onboard and increases the volume of hot water available.The stored water within the boiler reaches the same temperature as the engine (generally 85°C). If the mixer valve is set at 65°C you will generally increase your available hot water supply by 25%."

Also standard on Isotemp calorifiers and no doubt others.
 
PaulRainbow said:
No maybe about it, do you think i just made it up ?
Click to expand...
Do you have some sort of problem? Which bit of "mine didn't " dont you understand....which obviously means when I say "mine didn't " some do and some dont.
Whether the previous owner had a component removed I can't say, but there was no obvious evidence.
 
billskip said:
Do you have some sort of problem? Which bit of "mine didn't " dont you understand....which obviously means when I say "mine didn't " some do and some dont.
Whether the previous owner had a component removed I can't say, but there was no obvious evidence.
Click to expand...
What you actually said was "Mine didn't...but maybe some systems do." Your quote above is not what you said.

Like i said, no "maybe" about it.
 
PaulRainbow said:
What you actually said was "Mine didn't...but maybe some systems do." Your quote above is not what you said.

Like i said, no "maybe" about it.
Click to expand...
As above...which bit of
" mine didn't " dont you understand?
Which bit of my quote above is not what I said.. ?
The hot water calorifier in my boat was as fitted new when the boat was built, it had a pressure relief valve and was heated by immersion heater and/or engine cooling water.
It did not have any mixing water temperature control system. So maybe some didn't as obvious not all did.
I really dont see what you are trying to say.
Maybe mine was not a "Surecal"
 
Last edited:
Bouba, I'm not sure if you're on shore water, but I had something similar a few weeks ago when all the hot water was luke warm. I first thought it was the element, but later found out that someone had left one of the cockpit sinks running a small stream of hot water, so the tank couldn't heat up properly. As I was on shore water there was no water pump running to warn me. Or your element is shagged.
 
markc said:
Bouba, I'm not sure if you're on shore water, but I had something similar a few weeks ago when all the hot water was luke warm. I first thought it was the element, but later found out that someone had left one of the cockpit sinks running a small stream of hot water, so the tank couldn't heat up properly. As I was on shore water there was no water pump running to warn me. Or your element is shagged.
Click to expand...
No...it’s not heating any water. I went to inspect it but was beaten at the first hurdle...I couldn’t get the plastic protective cover off😳🤔...I don’t understand it, I put on with the same tools that are on my boat now....tomorrow, when I’m bound to be in a calmer mood I will try again
 
Elements don’t work then do work , defo not element.
Bouba said:
No...it’s not heating any water. I went to inspect it but was beaten at the first hurdle...I couldn’t get the plastic protective cover off😳🤔...I don’t understand it, I put on with the same tools that are on my boat now....tomorrow, when I’m bound to be in a calmer mood I will try again
Click to expand...
Y mate plumbs would disagree , you are the tool
 
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