This manual must only be used by a qualifi ed heating installer/service technician. Read all instructions, including this manual and
all other information shipped with the boiler, before installing. Perform steps in the order given. Failure to comply could result in
severe personal injury, death or substantial property damage.
Part number 550-100-214/1220
Advanced Manual
Multiple Boiler Installation & Settings + Single Boiler Advanced Settings
CONDENSING GAS BOILER
110/155
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