Bromleyxphil Posted August 26, 2017 Report Share Posted August 26, 2017 I have a 30 litre stainless steel 24v, 230v, single coil Calorifier in my shed......long story. Is it going to be big enough for a liveaboard boat or am I going to spend my time wishing I had sold this one and bought a bigger one? phil Link to comment Share on other sites More sharing options...
BEngo Posted August 26, 2017 Report Share Posted August 26, 2017 What are you going to use the hot water for? If it is for a family of four who like cooking and a lot of bathwater, then NO. For a singly who showers at work or the gym and eats out a lot, then very probably. N Link to comment Share on other sites More sharing options...
Bromleyxphil Posted August 26, 2017 Author Report Share Posted August 26, 2017 Just me and the wife.......no bath but also NO GYM Link to comment Share on other sites More sharing options...
BEngo Posted August 26, 2017 Report Share Posted August 26, 2017 Then it will probably be OK provided you start with the cauliflower really hot (fit a mixing valve too so you get safe hot water temps at the taps) and have Navy showers not Hollywood ones. Always let the missus shower after you! Then if there is no hot water for the washing up it must be her fault :-). For a liveaboard I would want twin coils and an immersion if a hookup was available. That way you can cover summer cruising, Autumn relaxing with the heating on and any time spent at a home mooring. The immersion also can be used with a genny if needed for a summer stopover. N Link to comment Share on other sites More sharing options...
Drayke Posted August 26, 2017 Report Share Posted August 26, 2017 7 hours ago, Bromleyxphil said: I have a 30 litre stainless steel 24v, 230v, single coil Calorifier in my shed......long story. Is it going to be big enough for a liveaboard boat or am I going to spend my time wishing I had sold this one and bought a bigger one? phil That will depend on the boat you are having built and the space available. Bigger would be better, say 55ltr and twin coil with immersion heater. Link to comment Share on other sites More sharing options...
bigcol Posted September 8, 2017 Report Share Posted September 8, 2017 I find Re colarifier size, if on 240 volt most of the time, a 15 litre good quality one will serve a couple, when on hook up constantly. when hot water is used, it get replaced straight away, abiet will get a few degrees cooler as the tank is used. if having a long shower, 240 volt on all the time, being smaller will heat up quicker. during the day when 240 feed on all the time, your not wasting money by heating up let say one double the size. speaking to sure cal, when your cruising, the engine heats up the water for free, so makes sense to have a bigger colarifier. then good insulation is the key. if your spending most of your time on shore power, having a smaller tank your only paying to heat up 15 ltrs, and it heats up approx 30 mins from cold. With 1kw heater where as a big 30 0r 55 ltr tank wit 1 kw heater will take 4 hrs plus waste of energy surecal says a lot of folks think bigger is better, but they could do wit a colarifier a lot lot smaller. engine crushing bigger is better when paying for shore power don't need to be as big col On 26/08/2017 at 13:15, Bromleyxphil said: I have a 30 litre stainless steel 24v, 230v, single coil Calorifier in my shed......long story. Is it going to be big enough for a liveaboard boat or am I going to spend my time wishing I had sold this one and bought a bigger one? phil Phil depending on what your going to boat for cruising free hot water shore power why pay for lots of energy heating the tank up. you mention 24 v heater?? Are you keeping, or selling? col Link to comment Share on other sites More sharing options...
blackrose Posted September 9, 2017 Report Share Posted September 9, 2017 But a 15 litre calorifier is probably not going to be adequate to provide hot water for a bit of washing up after breakfast and 2 showers in the morning. I'm afraid I have to disagree with surecal - in my opinion a bigger tank up to about 60 litres is better for liveaboards on shore power as long as it's well insulated. I have my immersion on a timer, but even if the immersion is left on permanently, once a bigger well-insulated tank is up to temperature it won't make much difference in terms of energy to keep it hot compared to a smaller tank - hot water usage being equal. Link to comment Share on other sites More sharing options...
RichM Posted September 10, 2017 Report Share Posted September 10, 2017 I have a 62ltr calorifier and during the warmer months I heat it up 1 hour per day with a 5kw Eberspacher (I don't have an immersion fitted yet) and this provides me with enough water for a one longish 10-15 minute shower and enough hot water for washing up for a few hours afterwards. Unless you are really frugal with your water usage, I'd recommend something bigger. Though it's probably worth noting, I do have separate water pumps for both hot and cold water. My shower is more like a power shower! Link to comment Share on other sites More sharing options...
cuthound Posted September 10, 2017 Report Share Posted September 10, 2017 An alternative to a large calorifier is to fit a Surecal one with a thermostatic mixer valve. It makes the hot water go further and ensures that the hot water delivered to the shower and taps is at a sensible temperature, not scalding hot. Link to comment Share on other sites More sharing options...
ditchcrawler Posted September 10, 2017 Report Share Posted September 10, 2017 The other point is what pressure rating is it? Link to comment Share on other sites More sharing options...
Bromleyxphil Posted September 12, 2017 Author Report Share Posted September 12, 2017 On 10/09/2017 at 19:17, ditchcrawler said: The other point is what pressure rating is it? Hi the Calorifier is a 30 litre one of these https://www.elgena.de/collections/boiler/products/nautic-therm MEE version with a 3bar relief valve. Link to comment Share on other sites More sharing options...
ditchcrawler Posted September 13, 2017 Report Share Posted September 13, 2017 On 12/09/2017 at 08:20, Bromleyxphil said: Hi the Calorifier is a 30 litre one of these https://www.elgena.de/collections/boiler/products/nautic-therm MEE version with a 3bar relief valve. OK didn't know the one you had was intended for marine use, it may have been atmospheric. 3 bar sounds OK Link to comment Share on other sites More sharing options...
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