ABSTRACT
Systems Whenlow-pressurehotwaterisusedforheatingsystemsthetemperatureofthe waterisbelowboilingpoint,usuallyabout80°Contheflowpipeandbetween 60°Cand70°Conthereturnpipe.
Circuitarrangement Variouscircuitsmaybeuseddependinguponthetypeandlayoutofthe
resultingintheemittersattheendofthecircuitbeingcoolerthanthoseat thebeginning.Thiscanbereducedbyshuttingdownthelockshieldvalves atthestartofthecircuitthusallowingmorewatertopasstotheemittersat theendofthecircuit.
