DIRECT VENT APPLICATIONS
DIRECT VENTING IS TO BE USED FOR OIL
APPLICATIONS ONLY. THE USE IS LIMITED TO
THREE, FOUR, AND FIVE SECTION BOILERS.
ONLY Z FLEX DIRECT VENT KITS ARE
APPROVED FOR USE WITH THIS SERIES OF
BOILERS. ONLY RIELLO BF SERIES BURNERS
MAY BE USED.
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9-1-2009