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tlwcs

  • Posts: 2148
Sonburg 5.1 heater. Is it hot enough?
« on: May 09, 2025, 12:07:56 pm »
Following on from the YouTube video, I said I’d ordered one and it arrived last Friday.
Before it goes to the mechanic to be installed and the exhaust routed I wanted to be sure it worked and there aren’t any leaks.
After the standard ptfe tape faff and lovely hose ‘leaking’ lock connectors, that I will change, it ran for an hour giving me these results. A little smoke at first, which I put down to it being new.
Happy with the results though.
I bought the unit after Dave’s review and I did email him with a couple of questions last week that he hasn’t replied to. Make of that what you will.
(Can’t delete the duplicated pic)
For now all good

ants

  • Posts: 341
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #1 on: May 09, 2025, 02:02:03 pm »
What are the dimensions of it please. I cant find them on their website or on Ebay

tlwcs

  • Posts: 2148
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #2 on: May 09, 2025, 03:17:56 pm »
What are the dimensions of it please. I cant find them on their website or on Ebay

20cm deep
40cm wide
60cm high

ants

  • Posts: 341
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #3 on: May 09, 2025, 06:20:37 pm »
Sounds good,it might squeeze in
Thanks for taking the time to measure it ;)

Stoots

  • Posts: 6323
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #4 on: Today at 06:35:49 am »
wouldnt the temp be lower once the hose is all laid out on the floor ?

i must admit that price is a lot more tempting for hot water and ive never really considered it before...

From what ive read 5kw isnt enough dont most advocate using a 9kw boiler ?

what would be the fuel cost to run this boiler on a daily basis ?


tlwcs

  • Posts: 2148
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #5 on: Today at 07:57:48 am »
wouldnt the temp be lower once the hose is all laid out on the floor ?

i must admit that price is a lot more tempting for hot water and ive never really considered it before...

From what ive read 5kw isnt enough dont most advocate using a 9kw boiler ?

what would be the fuel cost to run this boiler on a daily basis ?

Morning Adam.
Maybe you’re right with the coiled hose, it was also recirculating 50 litres of water I had left in the tank.
It will be fitted by the mechanic I use  who is on holiday.

I wanted to test it worked without any leaks before it’s bolted down.
It’s replacing the immersion element I currently use.
 
Running costs are obviously unknown atm but I can update when in use.
9 kw might be more efficient and get the water hotter and I value Spruce’s input on the other thread but if it only reaches 30* on a winters day, I will be happy with that.

I emailed Dave directly to ask if and how it needs to be recirculated and also where he got the temp gauge from, but he hasn’t replied and I doubt if he will now.
Tony

Spruce

  • Posts: 8590
Re: Sonburg 5.1 heater. Is it hot enough?
« Reply #6 on: Today at 12:08:15 pm »
wouldnt the temp be lower once the hose is all laid out on the floor ?

i must admit that price is a lot more tempting for hot water and ive never really considered it before...

From what ive read 5kw isnt enough dont most advocate using a 9kw boiler ?

what would be the fuel cost to run this boiler on a daily basis ?

Yes it does in our experience, especially when the ground is frozen. The more hose is pulled out the cooler the water at the end.

It will be interesting to hear about running costs. My 9kw boiler is plumbed into the diesel tank. We just use the heater mainly over winter and for the odd job in summer.  My Peugeot Boxer does around 24mpg during the summer when the heater isn't working, but it drops to around 12mpg during the winter.

Personally I can't see using one of those 10 litre auxillary fuel tanks will last very long. If anything I would try to modify a 30 litre outboard motor fuel tank, but the problem would be that it will take up valuable floor space and the back of the van could stink of any spilt diesel.
Success is 1% inspiration, 98% perspiration and 2% attention to detail!

The older I get, the better I was ;)