[GoEnergySystems]

Greetings!  I have received numerous inquiries from members to start a forum here to help answer any questions or address any concerns that you have on our 5 liter tankless water heater used for window cleaning.  Feel free to ask any technical or other questions and I'll do the best to answer them for you.  Thanks and I look forward to hearing from you!  Cheers! 

John Hurlbert
Global Energy Systems
www.goenergysystems.com/UK

[alanwilson]

Ok John

I want to run a heater after my pump - the shut off pressure is 130psi - will the L5 cope with the pressure?

what do you suggest

[Jeff Brimble]

Hi John and welcome, enjoyed our brief chat when I placed my order.
Alan and others there is sometimes a big time difference between us and USA so sometimes replies can take a bit longer- like 8 hours 

[poleman]

How fast could your tankless heater warm up a 1000lts tank to keep the frost out! and if I put the heater on my back door will the fule blow out!

[Nathanael Jones]

1000 litres would take 200 minutes to cycle through at the 5lpm flow rate,... expect a 20 degree or so temp rise.

[GoEnergySystems]

Well, y'all are 5 hours + of me, so I'll do my best to keep up on everyone.  Thanks Nathanael for the reply on the flow capacity.  To your question Alan - we say that the unit operates best between 20-80 PSI of water pressure.  130 PSI shouldn't be an issue, though I would recommend tightening the water pressure.  There is a screw that when turned in, requires a higher water pressure to push the diaphragm over (that opens the circuit for the igniters as well as regulates the gas).  I hope this helps!

Also, as I have seen it commented several times in this forum - the 20 minute auto shutoff timer is when used continuously.  If water stops flowing through the unit, the timer is reset. 

Finally, Poleman, the unit is made for outdoor use, higher winds will blow the flame out if you're operating it at its lower settings (of gas).  This again would be reset from stopping and starting the water and/or flipping the switch (which might be cumbersome if you're 10 meters away).   

[Xline Systems]

gas in van. all sounds a bit dodgy to me! insurance will kill you. diesel run is the only way forward

[Mr H]

gas in van. all sounds a bit dodgy to me! insurance will kill you. diesel run is the only way forward

No extra charges from the insurance people for me....... Caravans, campervans, plumber vans, burger vans all have LPG burners in them so nothing dodgy provided you fit them properly....

Regards
Mr H

[The Seven Bays Window Cleaning Company]

Nope........ none for me neither.  They said fine, no extra charge

[Mick (UHPS)]

Hi John
I am going to buy one of these heater units. However, unlike most of the other guys that have purchased them, I mainly use trolley mounted Schurflo backpacks rather than hoses. Instead of pumping through hoses from the van to the windows, I fill (as quickly as possible) a backpack, around 18L, and wheel that to the windows.

This is my system:
2 Man 500L onboard RO/DI filtration system.
I have 2 Flojet pumps which can be used independently with hose reels for WFP but I have also linked these together so that I can fill backpacks much quicker. The Flojets are 60psi and deliver about 6.5L/min each therefore using both together via the link pipe they deliver about 13L/min. = 1min 20s to fill a backpack
I have also installed a fast fill pump which is specifically for filling backpacks quickly. This delivers 24L/min. = 45sec to fill a backpack.

Assuming the water in the tanks would be around 50°F.

If I were to pump water @ 50°F through this unit at 6.5L/min what sort of temperature would I expect to get out?

If I were to pump water @ 50°F through this unit at 13L/min what sort of temperature would I expect to get out?

If I were to pump water @ 50°F through this unit at 24L/min what sort of temperature would I expect to get out?

Is any of this even feasable?

or do you think the L10 would be a better option?

I am wondering if another option would be to have the flojets connected to the heater providing hot/warm water and the fast pump as is, and just mix the two into the backpack.

Also, on the website it quotes 1.4 gallons/min. Is this US gallons?
Therefore 6.5L = 1.7 us gals, 13L = 3.4 us gals and 24L = 6.4 us gals.

Sorry for the long winded post, look forward to your reply.

Many thanks

Mick

[NWH]

Tried numerous fittings today and they all leaked like mad again,i think tomorrow i`ll try a couple of taps like someone suggested.

[David Slater]

gas in van. all sounds a bit dodgy to me! insurance will kill you. diesel run is the only way forward

As already mentioned, correct fitting is the key.

I would suggest you have a look at the Gaslow website and ask yourself whether that system looks 'unsafe'.

A correctly positioned gas bottle or a fitted system such as Gaslow would not cause any serious hazard except in the event of a fire - the bottle wont (and cant!) just explode.

The temperatures required to 'explode' a gas bottle are immense. Your vehicle would no doubt have been completely burnt out long before the bottle got anywhere near to 'exploding' point.

Diesel on the other is a different kettle of fish. It is carcinogenic and if not properly stored you will be breathing in fumes from the (stored) diesel constantly. This is a real and obvious hazard both short term and long term.

 

[NWH]

Never mind about gas i can`t get my fittings to stop leaking.

[David Slater]

 

Which fittings? the gas fittings or your water fittings?

[NWH]

Fitting for the water from the heater,i`ve been pulling my hair out this afternoon as they just leak for england on the hoselock connector.I`m not even atempting the gas bit until it works leak free cold.

[David Slater]

Have you applied PTFE tape to the fittings? - if not, give it a go 

Compression fittings? (you can overtighten compression fittings which will cause them to leak!) One 'nip' on the spanner is all that is required for comp fittings.

Comp fittings dont normally require PTFE - putting PTFE around a comp fitting can cause it to leak as well!!


Trial and error I'm afraid 

...unless you post up a piccy of what you're fittings look like.

[GoEnergySystems]

Hi John
I am going to buy one of these heater units. However, unlike most of the other guys that have purchased them, I mainly use trolley mounted Schurflo backpacks rather than hoses. Instead of pumping through hoses from the van to the windows, I fill (as quickly as possible) a backpack, around 18L, and wheel that to the windows.

This is my system:
2 Man 500L onboard RO/DI filtration system.
I have 2 Flojet pumps which can be used independently with hose reels for WFP but I have also linked these together so that I can fill backpacks much quicker. The Flojets are 60psi and deliver about 6.5L/min each therefore using both together via the link pipe they deliver about 13L/min. = 1min 20s to fill a backpack
I have also installed a fast fill pump which is specifically for filling backpacks quickly. This delivers 24L/min. = 45sec to fill a backpack.

Assuming the water in the tanks would be around 50°F.

If I were to pump water @ 50°F through this unit at 6.5L/min what sort of temperature would I expect to get out?

If I were to pump water @ 50°F through this unit at 13L/min what sort of temperature would I expect to get out?

If I were to pump water @ 50°F through this unit at 24L/min what sort of temperature would I expect to get out?

Is any of this even feasable?

or do you think the L10 would be a better option?

I am wondering if another option would be to have the flojets connected to the heater providing hot/warm water and the fast pump as is, and just mix the two into the backpack.

Also, on the website it quotes 1.4 gallons/min. Is this US gallons?
Therefore 6.5L = 1.7 us gals, 13L = 3.4 us gals and 24L = 6.4 us gals.

Sorry for the long winded post, look forward to your reply.

Many thanks

Mick

Hey Mick,

First off, the flo-jet systems work wonders.  Make sure that the pressure is at least 20 PSI (most of your pumps are probably in the 40-50 range).  I see no problem doing that.  You're only going to be able to get a maximum delta rise at 5 liters (hence the name, the L5 ).  The temperature output is going to max out at 5 liters at about 90 degrees F at that flow rate.  Now, if you are able to have more patience and bring down the flow rate, you'll be able to get up to 140 degrees F (thereabouts).  If you need more horsepower, I would look at the 10 liter version.  You will have the max at 10 liters per minute, but your temperature will be able reach a much higher temp (probably 120-140).  I hope this helps!  /John

PS - what is the leakage issue that other folks are referring to?

[Captain Scarlet]

I want to know if this heater will work with my setup? I run a two man system sometimes ( pictured ) and want to know how/if the heater would work for 2 men with this setup? How hot can it heat the water to after 100m of hose etc?

[jefftemperley]

nwh

i had problems on the first day get yourself to a plumbers for the right fitting that will screw onto the l5 it should have a rubber seal in it.

then get your hose made up at a place that deals with hydraulics, you need to have your hose from the hot outlet crimped onto your fittings properly.

i did it myself with o clips and tried jubilee clips and the heat combined with pressure blew the hose off of the hot outlet on the l5. since ive got them crimped on it all works a treat.

only other problem i got today was my old hose where it softens up with the heat was almost splitting in a few places where the wall was worn, so ive got some thermobore coming, i was hoping to get away with it but i think its a must to make it all work well, the hose attached to the reel sprung a leak too so i think anywhere that has heat should be crimped properley so seals are reliable

ive got a pic but cant work out how to post it on here drop me an email at jefftemperley@gmail.com and ill send it over so you can have a look,

nb im still working on prototypes of power reel im meeting my cad designer tomorrow as soon as im ready you will be the first to hear about it, cost a fortune so far! i hope everyone wants one when they are ready!

[NWH]

Yes it will work,you go to the heater after DI and that`s it it`s as simple as that.Global the heater dosen`t come with adequate fittings for what we need you have to go hunting in the B&Q`s of this world to fing them.