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Boiler Protection Logics
#1

The boiler its self is 3 - 4 years old, it lost its pressure within a week of having it installed, the fitter came out turned a couple of valves & it has worked ever since until about 4 weeks ago, now the boiler does not kick in ever without me manually turning the valves to raise the pressure. the boiler ( heating & hot water ) will remain on all day, turn off when the timer is set but then will not come back on again the next morning until I manually repeat to turn the valves.
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#2
[attachment=5958]


PURGE PERMISSIVES ( 15 Nos.)

LOTV AND HOTV CLOSE
ALL LONV AND ALL HONV CLOSE
DRUM LEVEL NOT HIGH (<125)AND NOT LOW( <-125)
NO BOILER TRIP CONDITION PRESENT
ALL SCANNERS SHOWS NO FLAME
AIR FLOW LESS THAN 40 %
AUX. AIR DAMPER MODULATED
WIND BOX TO FURNACE DO NOT VERY HIGH
ALL PA FANS OFF
ALL HAG CLOSE
ALL MILL AND ALL FEEDERS OFF
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#3

to get information about the topic "Boiler Protection" full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-boile...ion-logics
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