AQmatic NX48 Service-Handbuch - Seite 14
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SOLENOID USE
Solenoids only required for Systems 7, 9 and 14
Series 48-00/51-09 Stager
Drain
Solenoid
Valve
3
Inlet Pressure
1 2
2
3
1
Flow
Solenoid Energized
Energized To Close
The NXT Stager control can operate an optional 24 VAC
solenoid to control when a tank is off line. This solenoid is
electrically connected to the "lower drive" connection on the
circuit board, and control pressure is run through the solenoid
to the service outlet diaphragm valve.
The solenoid installed at the factory is a universal type. It is
plumbed in an energize to close configuration when service
outlet valve is normally open.
When a tank enters Regeneration or Standby the solenoid is
energized. Pressure from solenoid port 1 passes to port 2.
The diaphragm valve #2 will close.
When a tank enters In Service the solenoid is de-energized.
The inlet pressure to solenoid port 2 is stopped. The
diaphragm valve is vented through solenoid port 2 to port 3
(drain). The valve #2 opens.
Inverted Stagers Only - Energize to Open
If the service outlet vavle is normally closed, connect constant
pressure source to solenoid port 3. Connect solenoid port 2 to
service outlet valve. Solenoid port 1 is drain.
NXT Stager Controller AU11
Installer to
Plug Port 2
2
3
1
Flow
Solenoid De-energized