Amtrol OWB Series - Manual (Page 11)

BOILER SPECIFICATIONS
Figure 6 –Boiler (OWB-35 & OWB-50)
OWB series boilers are three pass Scotch Marine design with fully water backed transfer
surfaces. Boilers are designed for use in forced hot water heating systems. Heating is supplied
by a Waste Oil Burner that burns all petroleum products any weight combination up to SAE 90W
as well as fuel oils. Boiler–Burner units operate with no less than 0 to –0.01WC over fire and may
be vented using a conventional chimney.
Installation, Operation, And Service Instructions
11