FIGURE 4: BOILER INSTALLED IN CONFINED SPACE,

ALL AIR FROM INSIDE

FIGURE 5: ALL AIR FROM OUTDOORS,

VENTILATED CRAWL SPACE AND ATTIC

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Crown Boiler KSZ100, KSZ150, KSZ125, KSZ200, KSZ175, KSZ120, KSZ065 Boiler Installed in Confined Space ALL AIR from Inside