MODERN BURNER UNIT (MBU)
UNIT MAINTENANCE PROCEDURES
Removing Fuel Delivery Block
The air filter (3), control knob assembly (4), flame sensor (5), fuel feeder line (6), fuel shut-off
solenoid (8), and air fill solenoid (7) may be removed and replaced WITHOUT removing the
entire fuel delivery block assembly from the frame.
Replacement of all other components requires removing the fuel delivery block (2) from the
burner tube mounting shafts while still connected to all wire harnesses and hoses.
The replacement procedure for the air filter (3) is described in WP 0012.
Replacing Parts Without Removing Fuel Delivery Block. Open control panel (1) to gain access to the
fuel delivery block assembly (2).
Replacing Parts Without Removing Fuel Delivery Block