sand point water pump

[mhafele]

I have a sand point with a pump located at my hunting cabin. I'm looking at using a tankless hot water system for an outdoor shower. The pump has just a pipe coming out of the ground with a switch to turn it on and off so their is no holding tank. If I connect a hose directly from the pump to the tankless hot water system am I in danger of damaging the pump from restricting the flow? I don't know much about the pump but it was installed 20 years ago.

Thanks,

 

[Artisi]

I am assuming there is some type of pump installed in the well (sand point) but without any detail it is difficult to give you any accurate information. You may need to recover the unit to asertain what it is so that you can make an informed decision or else rethink your plan, why not put a holding talk above ground and use gravity feed for the shower.

Naresuan University
Phitsanulok
Thailand

 

[JJPellin]

I have seen this exact set up. This is a shallow well pump that takes suction directly from the well. The pump must be used in a very limited manner if it only has an off/on switch. Where I go fishing in Canada each year they have a pump with an on-demand tankless water heater. But they have to have a pressure tank and pressure switch to make it work. You can pick up a pressure tank pretty cheap. The pressure switch will kick the pump on and off automatically to hold pressure. If you do it without a pressure tank, you will have to put the off/on switch pretty close to the shower so you don't have to run the pump dead-headed for very long. You will have to turn the pump on and immediately turn on the water. As soon as you turn the water off, you will need to shut the pump off pretty quick or it will heat up and could do damage.

 

[cvg]

another option to shutting off the pump would be a flow diverter valve. diverted flow could go into a tank and used for other purposes