Best to wire pump to van battery or use split relay?

[slippy]

Want to get pump and tank set up soon.  I have been carrying a leisure battery in and out of flat to recharge.  Should I continue this or get someone to set up a split relay or just connect to van battery?

Also, want to get a cheap RO (in van) set up.  I was planning on using my flat's communal tap then if that fails try hanging a hosepipe out of window.  This could go pear-shaped with the other residents so don't want to invest lots of money in a amazing 40 40 set up with booster pump just yet.  Was going to ask someone to fit a cheap RO with auto shut off- any recommendations?  

 

[spruce]

Cheap r/o means slow. This is the reason why 4040's are the most popular r/o's on a van mounted system.

How are you going to keep an r/o frost free in winter in the back of your van?

Some do connect the pump to their vehicle battery. We tried it but as we do minimal mileage a day the van's battery went flat in 4 days.

Some who do a greater mileage have got it to work for them apparently, but then some also report that this method does reduce the starter batteries longevity.

 

[Julian Noddy Dean]

we have both and both work for us , ive never charged a bat in years , the vans do around 40 miles aday each , 

 

[slippy]

Cheap r/o means slow. This is the reason why 4040's are the most popular r/o's on a van mounted system.

How are you going to keep an r/o frost free in winter in the back of your van?

Some do connect the pump to their vehicle battery. We tried it but as we do minimal mileage a day the van's battery went flat in 4 days.

Some who do a greater mileage have got it to work for them apparently, but then some also report that this method does reduce the starter batteries longevity.

My van is my only form of transport for work and leisure.  Usually just drive around town.  Would a split relay be safer then?  Could charge it from home to top it up I guess. 

How u keep the ro from frosting up? Wrap in a duvet? 

 

[spruce]

My van is my only form of transport for work and leisure.  Usually just drive around town.  Would a split relay be safer then?  Could charge it from home to top it up I guess. Yes, a split charge relay will help, but you will have to take the battery out for additional charging periodically if you don't do the enough mileage. You need to find out if its a split charge relay or a battery to battery charger for your model of van.

How u keep the ro from frosting up? Wrap in a duvet? 

We put a heater in the back to keep the van just above freezing. But we have the r/o stored in a heated cabinet in the garage.

Some who don't have the facility to plug their van in will bring their hose reel inside and drain their pump down. If there isn't any water in the pump (apart from a couple of droplets) then the frost can't damage the pump.

I have my pumps on the side of my tank and have a large duvet over the tank anyway. The water in the tank will probably be around 7 to 10 degrees if you top the tank up every day so having a duvet will help.

 

[slippy]

We put a heater in the back to keep the van just above freezing. But we have the r/o stored in a heated cabinet in the garage.

Some who don't have the facility to plug their van in will bring their hose reel inside and drain their pump down. If there isn't any water in the pump (apart from a couple of droplets) then the frost can't damage the pump.

I have my pumps on the side of my tank and have a large duvet over the tank anyway. The water in the tank will probably be around 7 to 10 degrees if you top the tank up every day so having a duvet will help.

How u drain the pump down? 

U said how would I stop ro from freezing cos it's in back of van.  I have no choice but to have ro in back of van. I live in a flat.  If it knackers well it will be a cheapo so I guess not a big deal. 

 

[spruce]

How u drain the pump down? 

U said how would I stop ro from freezing cos it's in back of van.  I have no choice but to have ro in back of van. I live in a flat.  If it knackers well it will be a cheapo so I guess not a big deal. 

This is discussed every winter on this forum.

Turn the stop tap at the tank off. Unplug the hose onto the hose reel. Unscrew the filter bowl before the pump and switch the pump on. The pump will suck air which will be drawn into the pump and then pumped through the hose to the uncoupled hose pushing the water out.