scaled plate exchangers

[acslad]

could anyone tell me what would be the result of scaled plate exchanger? poor dhw flow, poor h/w temp as there would be karge temp differntial on flow and return? anything else? wouldnt the boiler overheat if the plate was scaled up?thank you

 

[Dan Robinson]

Fluctuating water temperature as the boiler short cycled.

It will get worse as the scale builds up.

 

[gas4you]

Poor DHW flow if scaled badly on the domestic side. Most plate HE's tend to block on the system side and cause hot/cold hot/cold cycling as the boiler overheats/cools/overheats.

 

[petit_pablo]

If the plate is scaled then poor hot water heat up or poor flow rates.

If its plate is sludged then fluctuating water temps, poss boiler overheats

 

[acslad]

thanks. i guess measuring the temp diff of flow into the plate and return out is confirmation of blockage/scale. should be 10 percent differential?

 

[bengasman]

thanks. i guess measuring the temp diff of flow into the plate and return out is confirmation of blockage/scale. should be 10 percent differential?

No, that is on your rads, or flow and return on boiler. Your DHW indication is explained above