Nortec AIRFOG Series - Manual (Page 22)

18 | AirFog Installation Manual
Pilot Lines
All air pressure lines connecting to the control panel must be 1/4” O.D. plastic tubing rated for
150 psig. Figure 16: Schematic Plumbing Layout illustrates the proper connections of the air
supply to and from the control panel to the vacuum valve and the pilot air regulator. The control
panel requires an input pneumatic (air) control supply, which is usually tapped off the main air
supply line upstream of the pilot air regulator. The control panel has two pneumatic fittings
located on its top plate; one marked “pilot in” and the other marked “pilot out”. The “pilot in” is
connected to the control supply with the 1/4” plastic tubing. A second 1/4” line connects the
“pilot out” to both the pilot air regulator and the vacuum valve using a “T” connector.
Primary Water Pressure Control
Primary Air Pressure Control
Ball Valve
Ball Valve Water Side
Pilot Air Regulator
Nozzle
Pilot Line
Control
Panel
Single Zone Configuration
Figure 16: Schematic Plumbing Layout