I'm interested to hear what boiler cylinder or cylinders etc you would recommend for this hotel. They currently have low pressure system, with old open flue boiler. They looking to have the lot completely replaced and upgrade to a unvented system. The hotel has 20 radiators, 8 Mixer showers, 4 baths a total of 9 bathrooms all with basins as well. Any advice would be appreciated!
Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws
E
Ermintrude
Worcester green star 24i combi
If you're asking then really need to get someone in to calculate the requirements as if you get it wrong it'll be very expensive to correct. It's all in the British standards so not rocket science.
If you're asking then really need to get someone in to calculate the requirements as if you get it wrong it'll be very expensive to correct. It's all in the British standards so not rocket science.
You have to know what the peak demand of the hot water is + what water the kitchen uses.
The heating will end up being an incidental amount of the demand of the boiler when it comes to peak demand of the hot water requirements
You will also have to supply equipment with a suitable recovery rate of hot water.
Can you not put in a heating only boiler and a separate hot water system.
That's how we do it over here.
The heating will end up being an incidental amount of the demand of the boiler when it comes to peak demand of the hot water requirements
You will also have to supply equipment with a suitable recovery rate of hot water.
Can you not put in a heating only boiler and a separate hot water system.
That's how we do it over here.
You need it designed imho
Will cover your backside
unless you fancy sitting down for a few days and learning a whole different raft of designing.
and having your backside on the line
Will cover your backside
unless you fancy sitting down for a few days and learning a whole different raft of designing.
and having your backside on the line
D
Dotty
Whatever goes in will be commercial, unless you've got your tickets I'd suggest you cut your losses and walk now before you end up in the brown and sticky............
D
Dotty
Give yourself a rough idea of what you're looking at and download Size It from Baxi Commercial.
Baxi Commercial | Size-IT is a Water Heater Sizing Program to be used to select from the Andrews Water Heater product range
Baxi Commercial | Size-IT is a Water Heater Sizing Program to be used to select from the Andrews Water Heater product range
H
happyflyer
To be honest the thread is a bit pointless really. I mean your hardly going to take the advice of here anyway with a job like that its obvious whats needed when you know whats required of the system and you would need to see the job first. What would be more fun would be to say how much do you think it will cost and ill start with £10k. Happy Bidding 🙂
E
Ermintrude
Who knows it's like being asked to cure an ailment when all you know is the patient is a man with limbs. Can't spec on such a basic design brief with unspecified perimeters
H
happyflyer
are you looking to quote against other companies? or do you have the job?
it would be best to get a design from a consulting design engineer. But you need to know what will cover this cost.
it would be best to get a design from a consulting design engineer. But you need to know what will cover this cost.
M
Mike Jackson
Do you then? Without doing a full site survey, testing pressures and flow rates assessing layouts etc. can anyone know? I could take a guess but I'd be plucking figures out of thin air.
Id almost consider putting money on it being fed by 25mm and 15mm to all the bathrooms as it stands...
I'll take a guess!
Hot water: Rinnai HD50 + 315 ltr tank.
From the detail you provided in your OP
Hot water: Rinnai HD50 + 315 ltr tank.
From the detail you provided in your OP
More things to consider before appliances.
incoming main size, pressure, flow rates, need for accumulators or booster sets.
system layout, pipesizing, fed from a single location or multiple appliances.
I would hazard that you would want a few of those units cascaded together.
H
happyflyer
Bet he wished he'd never asked, the roof just came in on him, maybe he will think twice next time.
Happy to give pointers with more info but having had to sort a b and b out its a headache
You could always check out an ACV Heatmaster. It's a single package unit, a boiler that heats a cylinder above it. Fast recovery times for hot water, and it also has the capability to heat radiator circuits as well. Check it out on the net.
A quinta pro with rad circuits and a glass lined cylinder fed off a low loss header would be another way.
A quinta pro with rad circuits and a glass lined cylinder fed off a low loss header would be another way.
E
Ermintrude
H
happyflyer
I spend most of my days now putting systems right that have been put in wrong, oversize is just as bad as under-sized, get some help like people say, HWS demands can be a pig and catch you out, even the experts get it wrong, usually too big, frightened to make a mistake.
Tony
Tony
like i said in earlier post contact rinnai
they will send some one out to do a site survey and will issue design spec
they will send some one out to do a site survey and will issue design spec
That stuff is generally not taken into consideration when sizing hot water units.
That's pipe sizing and system design.
Sizing hot water units is taking peak demand usage and selecting a system that can cope with the peak demand
For a place of that size - relatively small - I would always use a storage tank instead of cascading units together.
There is no way that the peak demand for that place would be over 1000 litres in the first hour.
H
happyflyer
Good idea they will carry the responsibility of the design, I think a few others companies would do the same
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