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Discuss Cascading rigs or frames for two 40 kW Worcester boilers in the Central Heating Forum area at PlumbersForums.net

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Hello,

This is in relation to replacing a 50 year old 68kW boiler with two 40kW Worcester boilers for a residential blocks's (12 flats) centraol heatign only. Are you aware of any cascading rigs or frames that would be suitable? King of Pipes had suggested the Ideal Evomax heder kit, which seems great, but I woudl prefer to go with Worcester.

Thanks
 
No cas kits for the cdis but have a look at the Worcester 162s they Make them for them
 
Thanks. Unfortunately the GB range starts at 50kW and this is a bit more per boiler than I am looking for.

get your installers to design there own tbh not hard it’s only a llh or plate
 
Thanks. I took a look them but the cascadign units are only for hte commercial range that starts from 50kW, and that is likely excessive for my purposes.
Why don't you fabricate your own? Or have someone else do it for you?
It's only a frame made to mount the boilers next to each other.
Box section steel or angle iron will do it.
 
Have a look at Viessmann 200 series
 
Worcester has a reputation of making good boilers and because we already have one for hot water it woudl simplify things to have boilers from the same manufacturer. Nonetheless, I am not set on them and open to other ideas.

I don’t think you’ll find many advocates of Worcester in heating these days. The domestic units at least have had a Lot of issues.

@ShaunCorbs is there much science to designing a low loss header for a system of this size?
 
I don’t think you’ll find many advocates of Worcester in heating these days. The domestic units at least have had a Lot of issues.

@ShaunCorbs is there much science to designing a low loss header for a system of this size?

no tbh something small like that I would get a pre made one and size to the kw rating that I work out
 
Still Evomax for me Lord Worcester are not the best boilers out there by far now, for a quick turn around this is well worth considering talk to them get a quote . Regards kop
 

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Have a look at Vaillant domestic. Use there smallest LLH.
This is all personal opinion built on individual experience as always on a forum but I don't think you can beat Vaillant.
 
Have a look at Vaillant domestic. Use there smallest LLH.
This is all personal opinion built on individual experience as always on a forum but I don't think you can beat Vaillant.
Their domestic range maxes at 35kW, when ideally I woudl prefer 40kW, because if one of the two 40kW boilers breaks down, a single 40kW boiler will be able to better handle the communal heating requirements for the 12 flats. We have a different boiler for hot water.
 
Their domestic range maxes at 35kW, when ideally I woudl prefer 40kW, because if one of the two 40kW boilers breaks down, a single 40kW boiler will be able to better handle the communal heating requirements for the 12 flats. We have a different boiler for hot water.

If you’re worried about uptime why not fit 3 domestic boilers rather than 2 slightly larger commercial boilers?
 
Their domestic range maxes at 35kW, when ideally I woudl prefer 40kW, because if one of the two 40kW boilers breaks down, a single 40kW boiler will be able to better handle the communal heating requirements for the 12 flats. We have a different boiler for hot water.
Yes but the 48Kw modulates down a good way so why not two of those as I suggested before.
 

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