If anyone could shed some light, when we went away we used the plunge pump on the side of the caravan but have no idea what this lot is for, except the gas bottle!
Your help would be much appreicated
Many Thanks in advance to anyone who could shed some light :)
it looks like someone has wired/plumbed a mains water system into the front of the van,possibly with hot water system, most likely the van was sited for a few seasons in its passed life.
When we used it a couple weeks ago for the night we connected the water storage container to the side of the caravan via a plunge pump.
This resulted in water coming out of the tap in the kitchen and out of the shower, although this was more of a trickle as there was a leak which I have now fixed (I hope.
None of this was hot water though, which im thinking must need to be connected up via the pump at the front.
The water heater has to fill with water when you first connect water to it. And, whilst filling, you have to bleed all the air out of the system by opening the hot taps. Then you switch on the water heater and wait for it to heat up, say 45mins on electric.
The tank is simply a compact imersion heater and the pump will be for the supply. I would check what sort of power this uses as this type of heater can be anything upto 9 kw which would trip the electrics on site instantly. So long as the power is ok, the system should work fine, very similar to a normal water heater but with a more powerful pump, which might be a bit overkill.
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Topic: Please Help!
would attach a hose and turn the tap then water heater and pump on , then run around the inside of the van like a mad man checking for leaks. 
