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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Lee. on September 18, 2013, 09:40:44 pm

Title: L5 and 100psi
Post by: Lee. on September 18, 2013, 09:40:44 pm

Hi,
I am looking at getting an L5 water heater from corwoods but noticed that the input water pressure is around 80psi. I have a 100psi pump would it still be possible to run my pump with it?

Title: Re: L5 and 100psi
Post by: richard jagger on September 18, 2013, 09:48:37 pm

I would think so.

Title: Re: L5 and 100psi
Post by: bobplum on September 18, 2013, 10:45:37 pm

Quote from: Lee. on September 18, 2013, 09:40:44 pm

Hi,
I am looking at getting an L5 water heater from corwoods but noticed that the input water pressure is around 80psi. I have a 100psi pump would it still be possible to run my pump with it?

is that maximum psi
i have a l5 and only run the pump at say 40 psi

Title: Re: L5 and 100psi
Post by: PoleKing on September 18, 2013, 10:57:28 pm

it's fine

Title: Re: L5 and 100psi
Post by: dannymack on September 19, 2013, 01:02:24 pm

It will be ok if the water runs to fast just adjust the gas and the hot and cold on the shower

Title: Re: L5 and 100psi
Post by: Lee. on September 19, 2013, 09:04:35 pm

Thanks Dannymack, Just wondered about the pressure rather than the flow. Is the pressure too much? would a 100psi pump cause leaks in joint or put to much pressure on any internal workings? do you have a 100psi pump?

Thanks for your help mate.

Title: Re: L5 and 100psi
Post by: Nathanael Jones on September 19, 2013, 09:08:14 pm

So far I've never heard of an L5 bursting from over pressure.

If you use a controller with dead end detection, you may well be going well above 100psi anyway.

Title: Re: L5 and 100psi
Post by: richard jagger on September 19, 2013, 09:12:10 pm

The joints leak due to fittings not suited for hot and over hot water which is risk to the glass over 60 degrees. If there is a weakness in the system hot  water will find it. I have found so many use these swivel hose lock fittings on the reel. It would be advised to use hot water fiber washer instead of the nylon which comes standard with it. A few have had leaks t this point.
.

Title: Re: L5 and 100psi
Post by: zodiac on September 19, 2013, 10:43:58 pm

Hi Mate
you have to more then 80 psi pressure to l5 boiler to work. Boiler won't work with 40 psi  keep switching off

Title: Re: L5 and 100psi
Post by: Dave Willis on September 19, 2013, 11:30:39 pm

pressure has nothing to do with it - it's the flow.

Title: Re: L5 and 100psi
Post by: dannymack on September 20, 2013, 05:54:19 am

Hiya Lee yes I got 100 psi been using that for a couple of years been fine like someone said its not the pressure it's the flow going in and comming out m8

Title: Re: L5 and 100psi
Post by: Nathanael Jones on September 20, 2013, 11:15:24 am

Quote from: zodiac on September 19, 2013, 10:43:58 pm

Hi Mate
you have to more then 80 psi pressure to l5 boiler to work. Boiler won't work with 40 psi  keep switching off

You're getting confused between pressure & flow rate here. The number on your digi controller does not indicate pressure in PSI, its simply an indication of the amount of power being supplied to the pump.

An L5 will work at 15 psi if the water is flowing at a high enough rate.