Low loss header required?

[State of Flux]

I've a customer with two regular boilers piped directly to shared flow and return pipes without a low loss header. A single pump drives the output around three floors and there are no complaints of poor circulation.

Appreciate any thoughts on whether this setup should change? My Level 3 learning says it should have a header but if it works ok?

On a separate slant, a call from any of the three channels will fire up both boilers so I'd welcome any suggestion for a more fuel efficient control arrangement.

Cheers

 

[MC_Bob]

What boilers are they?
When we cascade large boilers they normally have controllers specced in to the job.
Low loss headers are great, but depends if they're new units or 20 y/o suprimas as to whether I'd do just that..

 

[missplumb]

if both the boilers are the same make and outputs then there really wouldnt be a specific need for a LLH as flow rates through the boilers would be the same amd aslong as they have a commissioning valve on the shared return to control the flowrate then i would say it was fine.

 

[State of Flux]

Thanks for the inputs and assurance. They are a matching pair and I'll check for a commissioning valve when I'm next there.

 

[Ermintrude]

Andrew?