User Manual Weil-McLain ULTRA OIL BOILER UO-4 Gph Ultra Oil Direct Vent Oil Boiler

Series 3

Oil-Fired Water Boiler

is manual must only be used by a quali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 550-143-013/0621

• Installation

• Startup

• Maintenance

• Parts

Boiler Manual