Unvented with boost pump

[eagleeye]

Looked at a job that I'm just pricing for and need some advice. It's a 2 floor flat with 1 bathroom. It has tenants in at moment but landlord will move back in a few years. Currently have an old neata heat boiler with dual cold water tank / header tank and copper hot water cylinder. She wants to replace all of this for a good system with good hot and cold water flow rates. I've suggest an unvented cylinder with a boost pump set due to a slow mains flow into flat. Heat only boiler with sealed system. Question is with regards to the boost pump. I've found one on line http://www.tankservices.co.uk/detai...DohrVYU8oxmBSbpNHqh4vbf-R6ewajPuFDBoCAl_w_wcB and it's £133 plus vat. Are these any good and do you think it's the right thing to do

 

[Ch4 plumbing]

how much stored water are you going to provide for the pump?

 

[ShaunCorbs]

how much stored water are you going to provide for the pump?

Don't think he is lol just connected to the mains lol

Op you require a break tank as well

 

[eagleeye]

Of course I'm gonna use a break tank. A 200 litre one. Just wanted opinion if this is OTT or not for a 1 bathroom flat

 

[ShaunCorbs]

Of course I'm gonna use a break tank. A 200 litre one. Just wanted opinion if this is OTT or not for a 1 bathroom flat

You need to make sure it can do 2.5 bar with 25lpm min so if it will yes but might be noisy

 

[eagleeye]

Yes it does 2.8 bar and a max flow of 5p litres a min. Noise did bother me. Can't find what dB it says it is on spec

 

[ShaunCorbs]

Yes it does 2.8 bar and a max flow of 5p litres a min. Noise did bother me. Can't find what dB it says it is on spec

You will find normally it will do 50 lpm at the lowest pressure so just check before hand