Companies to design a water system

[mutley racers]

Hi all.

I have been asked to quote for a job at a rowing club. Quite a big job running 10 showers, 6 basins, 6 toilets, 2 catering kitchens etc. This place is running out of hot water regularly due to demand.

The place is fed by a 7lb lead supply which feeds 2 water tanks in the loft and a 250litre gas fired Andrew's water heater so definitely not up to scratch

 

[MOSSEP]

Extra Andrews heater then!

 

[mutley racers]

They really want to start from scratch as the system is old

 

[ShaunCorbs]

Around 200lpm with everything running

And 500-600l of hot water

 

[mutley racers]

Thanks!!!

 

[ShaunCorbs]

Find out what the water main lpm and pressure is and come back to us (the water board will be able to tell you)

 

[mutley racers]

2 bar pressure and 14lpm

 

[ShaunCorbs]

2 bar pressure and 14lpm

Speak to dab mate break tank and use there pumps to boost the main

Do you know the current cap of stored water ?

 

[mutley racers]

A 245 litre gas fed unvented heater and 2 x 200 litre cwst Inn the loft

 

[ShaunCorbs]

no wounder they run out

Any more room up there eg double it min would recommend 3-4x

 

[ShaunCorbs]

@Chalked

 

[mutley racers]

Yep plenty more room up there. All right having 4 tanks but trying to fill them up off a 15mm main is not ideal hey

 

[ShaunCorbs]

Yep plenty more room up there. All right having 4 tanks but trying to fill them up off a 15mm main is not ideal hey

That's why you need more cap so over time they refil

I would be looking at replacing the lead main 35mm min

 

[mfgs]

I'm not surprised they are running out with that set up.
If they have all 10 showers on simultaneously, running at say 10L/min then that's 100L/min of flow. Average shower length is 5-6 mins. So 600L of 40 degree water required for 10 showers. So 1 x 400L unvented would suffice for 10 showers running at the same time. However you then need the recovery time if they are used straight after.
You will be looking at a big breaker tank feeding a booster pump/pumps.

 

[mutley racers]

I'm not surprised they are running out with that set up.
If they have all 10 showers on simultaneously, running at say 10L/min then that's 100L/min of flow. Average shower length is 5-6 mins. So 600L of 40 degree water required for 10 showers. So 1 x 400L unvented would suffice for 10 showers running at the same time. However you then need the recovery time if they are used straight after.
You will be looking at a big breaker tank feeding a booster pump/pumps.

Definitely. That's what I thought it would be good to get a manufacturer out to spec it. Thought Stuart Turner did this and was wondering what others. Shaun has suggested DAB

 

[ShaunCorbs]

Definitely. That's what I thought it would be good to get a manufacturer out to spec it. Thought Stuart Turner did this and was wondering what others. Shaun has suggested DAB

stuart tuner havent taken over an accumulator manufacturer so they would be ok as well i find there pumps a bit noise tho but does it matter

 

[oz-plumber]

I have had Rinnai and Bosch design hot water systems for me in commercial and semi commercial installations.
Both have been beyond exceptional as far as I am concerned and the systems they specified / designed have worked above expectations

They also give you guarantees that the system they design will work.

I would be contacting either of them to do the design for you.

 

[mutley racers]

Here is the schematic. To be honest, when I looked at the cylinder quickly I thought it was unvented as it had pressure gauge on it. Schematic shows it as gravity. Any way, tank is only 245 litres. None of the showers are thermostatically controlled and as the tanks in loft are old they need to be replaced.