Dunkirk Empire 3ES1.00 Посібник з монтажу та експлуатації - Сторінка 9
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12. The near boiler piping shall includea 1 1/2" ball valve in the return
pipingas shownin Figure8A far bottomblowdawn anddraining.
13. Forgravityreturnsystems, t hebottomof theloweststeamcarrying
pipe,be ita dryreturn, o r theend ofthesteammain,mustbe at least
28"abovethenormalwaterlevellinean thedghtsideof theboiler.
This is knownas "Dimension A."
14. Forpumpedreturnsystems, f ollowthecondensate pumpor bailerfeed
pumpmanufacturer's instructions f or properinstallation a nd hookup.
15. Inconnecting thecoldware r supplyto thewaterinletvalve,makesure
that a deanwatersupplyis available. W henthewatersupplyis froma
wellor pump,a sandstrainer shouldbe installed atthe pump.
FOR USEWITH COOLINGUNITS
A.
This boiler, when used in connection with chilled water systems, must
be installed so that the chilled water is piped in parallel with the heating
boiler. Appropriate valves must be used to prevent the chilled water
from entering the heating boiler (Fig. g).
B. Whenthis boileris connected to heatingcoilslocatedin air handling unit.,
where they may be exposedto refrigeratedair circulation,the piping
systemshall be equippedwith flow controlvalves or other automatic
meansto preventgravitycirculation of the boilerwater duringthe coolinc
cycle.
'_rd,.vE8 A & m
VALVES C & Q
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