mcanderson
Well-known member
Yet to find a domestic one that will warm water via the engine running and it acting as a heat exchanger.
Hot water heater tripping circuit breaker
- Thread starter mcanderson
- Start date
PeterBoater
Active member
Confusion between an immersion heater and a calorifier cylinder (that contains an immersion heater as well as a heat exchanger).
A marine immersion heater has a higher temperature safety cutout to allow for the possible higher temperature of the heat exchanger in the calorifier. Otherwise the immersion heater safety cutout might (emphasis on might) trip even though the heater is not powered.
superheat6k
Well-known member
Possibly, but yours is a larger power boat likely to have AC and with a 32a shore supply, but not the more normal 16a in the UK.
Hurricane
Well-known member
Domestic 1 Kw immersion heaters do exist - I only did a quick search but I found one for £25.
The marine ones can't technically be any different.
This is the company that supplied Princess with my system
Marine Immersion heaters
I'm afraid I just don't see the point paying more for something that is technically the same - just because it has the stamp "marine".
But, on the scale of things, they aren't that expensive - a little under £90 for a 1Kw one if you want that peace of mind (unnecessarily IMO)
PeterBoater
Active member
Did you read #22?
Hurricane
Well-known member
As PeterBoater says.
Are you sure that your engines don't heat the water using the engine coolant using a coil inside your hot water cylinder/calorifier.
Thats how it is done on a Princess and it was the same on our old Sealine.
Hurricane
Well-known member
Our posts crossed - I credited your comment whilst you were typing.
I agree with you but domestic immersion heaters have adjustable thermostats.
BTW - have you seen how hot the water gets when it is heated by the engines - way hotter and mine has never tripped the safety stat - yet!!
Thats why these systems are fitted with a temperature mixing valve on the secondaries.
PeterBoater
Active member
You still don't get it; I'm not talking about the thermostat but the high temperature safety cutout. I give up. Bye.
Hurricane
Well-known member
Sorry, I edited my last post saying that mine had never tripped.
Bigplumbs
Well-known member
you got that right
Bigplumbs
Well-known member
He seemed to get the hump
James jameson
Member
I believe peteboaters point was;
If it’s a standard set up I.e pipe from the engine to the chlorifier and back to the engine the temperatures in the tank can get very high (that’s how mine is by origin design) and the hot water after a long run is stupid hot
this high temperature would or could operate the mechanical trip element in the stat so when used on mains electric the heater wouldn’t work because this protection stat would need manual resetting
pete raises a very good and valid point
mcanderson
Well-known member
To tell everyone the solution- replaced both thermostat and element. Got both from the local marine electric place and they said that when they do the job they replace both. Saves hassle. They also loaned me the tool to take the element out. Cost €141.
