Boiler

[Adamwalker64]

Hi was wondering has anyone ever installed a standard lpg combi boiler on a boat 

[Richard10002]

I was looking at the one in my sisters static caravan last year. Quite big, but cant see any reason why it wouldn't work. Might depend on how much LPG it uses, compared to storage capacity?

[Kingdom Isambard Brunel]

They are far too big an output unless you have a huge fat boat. You may have great problems fitting the flue assembly in a steel hull, the tumblehome will allow rain water in, and it will stick out a long way.

Not a practical idea, the gas consumption will be massive, expensive on bottled gas, why do you think it is a good idea?

[Adamwalker64]

Was just exploring all the possibilities got a morco on the boat at the min flow rate rubbish take your point about gas usage that was my concern I know you can alter the gas rating quite low on domestic boilers 

probably gonna go down the diesel heater with cylinder and run the cold water through a accumulator to bump up the pressure unless you’ve got any other ideas 

thanks for your feedback Sam looking forward to hearing what you think about alternatives 

Adam 

[Ex Brummie]

Despite the other disadvantages already mentioned, a combi  requires an uprated cold water flow and pressure than you can easily get on a boat.

There are other multipoint heaters you can use that give better output than the morco, and there are good reasons for separating your heating and hot water systems.

[Adamwalker64]

What are the advantages of having separate systems for the heating /hot water just trying to get.a decent shower 

thanks for your input 

Adam 

[Slim]

3 hours ago, Adamwalker64 said:

Was just exploring all the possibilities got a morco on the boat at the min flow rate rubbish take your point about gas usage that was my concern I know you can alter the gas rating quite low on domestic boilers 

probably gonna go down the diesel heater with cylinder and run the cold water through a accumulator to bump up the pressure unless you’ve got any other ideas 

thanks for your feedback Sam looking forward to hearing what you think about alternatives 

Adam 

I'm a little confused as to how you expect an accumulator to "bump up" the water pressure. Smooth out the flow, yes

[Adamwalker64]

Thought I might try this 

What do you think 

[Kingdom Isambard Brunel]

Fine, but what pressure rating is the rest of the system such as calorifier, and pressure release valve? 30psi, 2 bar gives a good shower for most folk, is the shower head the problem or the mixing valve?

[Adamwalker64]

Ain’t got one yet just starting a refurb so gonna be starting from scratch just trying to get some ideas at the min so any input greatfuly recived 

[Kingdom Isambard Brunel]

KISS is the way to go with boats.

[Adamwalker64]

Kiss???

[rusty69]

Just now, Adamwalker64 said:

Kiss???

Keep It Simple....Stupid!

[Adamwalker64]

Where’s the fun in that 

[rusty69]

5 minutes ago, Adamwalker64 said:

Where’s the fun in that 

The fun is in the keeping warm, being able to get water and cook when your complicated systems go wrong. 

Edited February 9, 2019 by rusty69

[Adamwalker64]

Fair enough so what’s the best type of system to go with starting from scratch so. Open minded not got any experience of plumbing a boat but I have been a domestic heating engineer for 20 yrs  any suggestions would be greatfuly recived

[Richard10002]

Instant Gas water heater for hot water. Possibly plus a calorifier so you get it free when the engine runs for a while.

 

Smokeless fuel burning stove for heat, possibly with a back boiler feeding rads through the boat.

 

 

[Adamwalker64]

?

[ditchcrawler]

I cant see it getting much simpler than a pump mounted on top od an accumulator. However you are paying a lot for convenience on that set up, the pump is about £60 so that is £100 for a tank, gauge and piece of plastic pipe.

[mark99]

We have a small domestic diesel boiler in our engine room. It supplies heat for rads and calorifier hot water. The pump is quite power hungry.

[Adamwalker64]

They seem to quite popular is that the only draw back are they noisey