Accessories
7-2
750-204
Profire D/LND
The steam atomizing line is shipped loose and must be piped and wired to the burner as shown in the diagram
below. Refer to the wiring diagram for the electrical connection. The air compressor is used for cold oil startup.
Start the boiler with the air atomizing system first. Once the boiler reaches operating pressure, shut down the
unit, close the shut-off valve on the air line and open the one on the steam line. Set the Air / Steam switch to the
Steam position. Restart the unit with the steam atomizing system. You must have a minimum of 70 PSI at the
inlet of the steam regulator. Open the needle valve to its maximum. Adjust your steam pressure with the regula-
tor to have 30 PSI on the discharge side of the regulator. While the unit is purging, screw in and adjust the nee-
dle valve to have 10-15 PSI in low fire. Install a pressure gauge to monitor the pressure. One or two regulator is
supplied depending on the boiler operating steam pressure. Follow the instructions in the Chapter 4, Adjust-
ments, to set up the burner. Fine tune the steam atomizing with the needle valve.
7.3 — Air Purge System (optional)
The nozzle line air purge option is used to purge
the oil out of the nozzle line using the air com-
pressor on a burner shutdown. The air purge line
is mounted and piped on the burner. The air line
from the compressor to the air purge line is by
others.
FIGURE 7-2. Air Purge System
7.4 — Plant Air System
The D Series burners are able to operate with a plant air system instead of the standard IC compressor. In such
cases, the burner is supplied with an atomizing air regulating line.
To Next Page
Loading...
Need help?
General