Strainers; Atomizing Control Methods - Eclipse Combustion Vortometric v2.00 Installation Manual

Strainers

Atomizing control methods

3-10
No matter what fuel is used, it is essential that the valve train
components, the atomizer and the fuel oil tip be protected from
foreign material damage. Therefore, it is suggested that strainers be
used as follows:
Oil valve trains
1. It is recommended that an edgeplate type filter with 0.0035"
separations (170 mesh) be used UPSTREAM of all valve train
components.
2. It is recommended that a strainer with 100 mesh screen be used
ADJACENT to the oil gun inlet.
Atomizing valve trains
It is recommended that a strainer with 1/32" diameter perforated or
20 mesh screen be used UPSTREAM of all valve train components
for steam or compressed air applications.
Fuel gas valve trains
It is recommended that a strainer with 1/32" diameter perforated or
20 mesh screen be used UPSTREAM of all valve train components.
There are two possible control methods for atomizing air and steam:
1. Fixed: If the burner's turndown ratio requirement does not
exceed 5:1, then the atomizing pressure at the burner may be
set to run constantly at 50/55 psig, eliminating the need for a
differential pressure regulator.
2. Modulating: Use a differential pressure regulator which is "top
loaded" with the oil pressure at the nozzle, which allows the
atomizing pressure to increase proportionally with the oil
pressure. To do so, set the atomizing pressure approximately 20
psig above the oil pressure, but not exceeding 50/55 psig. To
ensure this maximum pressure is not exceeded, adjust the
pressure regulator for the incoming atomizing supply to not
exceed 50/55 psig.
Eclipse Vortometric Burner v2.00, Installation Guide 248, 4/10/07