Carlin Combustion Technology 702 Installation guide

Hello! I'm a chat assistant that has reviewed the Carlin 702CRD oil burner user manual. This manual provides detailed information on the installation, operation and adjustments of the burner, including instructions for assembly, combustion head settings, and wiring for different boiler types. I am prepared to answer your questions about this burner and its operation.
What type of fuel does the 702CRD burner use?

What is the low-fire operating pressure?

What is the high-fire operating pressure?

What is the recommended draft over the fire for natural draft applications?