Leslie Controls Unfired Steam Generator LVSG SERIES - Manual (Page 4)

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Solid State Control Module is supplied with a LED backlit
LCD display. LED pilot lights are supplied to indicate On-
Off, high pressure, low pressure, low water, high water, water
feed, and blow down. Solid state control module allows
owner to set pressure limits on display screen. Solid state
control module has a flashing red alarm light and alarm horn
with built in alarm silence relay. Solid state control module is
supplied with dry contact closure outputs to indicate to
building automation control ( BAC) Power on, Low water,
High pressure, Water feed, High water, Low pressure and
Blow down occurring. Control module allows BAC to turn
Unfired Steam Generator on or off through a remote relay
suitable for 24 VAc, 1 amp. Control module allows BAC to
remotely monitor operating pressure. Control module is
supplied with an on-off switch and is mounted in a NEMA 4
enclosure.
Built in remote start stop: This feature allows Unfired Steam
Generator to be started or stopped from a remote location.
Typically this would be accomplished from Building
Automation Control (BAC) . Requires a dry contact suitable
for 24 VAc and 1 amp. Terminals P2 on panel are where BAC
on-off is wired.
Built in On-Off Switch: Allows for local on-off and is
convenient for service in unlikely event service is required.
This switch is mounted in side of panel.
Built in Alarm Horn: alarm horn will sound and fault LED
will light (blinking red) on low water or high pressure If
either high water or low pressure options are selected alarm
horn will also sound and alarm light will light (blinking red)
in event of high water or low pressure. 2001 Solid State
Control Module also features an alarm silence relay which
will silence alarm but not fault light when generator is being
serviced. When fault is cleared both alarm and fault light will
automatically reset.
Built in timer for timed blow down: If timed blowdown option
is selected time and duration of blow down can be easily
selected in Leslie 2001 Solid State Control Module.
Built in relay for water feed: Leslie 2001 Solid State Control
Module operates in conjunction with level control to signal
feed water solenoid or feed water pump to maintain correct
water level in unfired steam generator.
Built in operating pressure readout: Leslie 2001 Solid State
Control Module features an easy to read LED digital readout
of operating pressure.
Built in high pressure cut off and alarm: In event of high
pressure Leslie 2001 Solid State Control Module will close
source steam or HTHW supply valve and sound an alarm.
Built in low water cut off and alarm: In event of low water
Leslie 2001 Solid State Control Module will close source
steam or HTHW supply valve and sound an alarm.
Built in low pressure alarm: If activated, Leslie 2001 Solid
State Control Module will sound an alarm if a low pressure
condition occurs.
Built in optional input / output.
Built in LED display of functions and alarms: Leslie 2001
Solid State Control Module is designed for user to tell at a
glance how system is operating. Built in LED displays make
troubleshooting simple.
Function
LED Indicator 1 LED Indicator 2
Power ON Green = Power
On Blank = No power
Low water Green = Water
level not low Red = Low water
High
pressure Green = Normal
pressure Red = High
pressure
Water feed Green = Water
feeding Blank = Water not
called for
High water Green = Water
level normal Red = High water
Low
pressure Green = Pressure
not low Red = Low
pressure
Blow down
operating Green=Blowdown
occurring Blank = No
Blowdown
Optional
input/output
Built in contacts to notify BAC (Building Automation
Control) of functions and alarms: This control allows for
simple and reliable interface from a remote location. BAC can
also start and stop unfired steam generator.
Contractor Wiring
All Power Connections should be performed by a trained,
certified electrician. Be sure factory supplied on-off
switch is in OFF position before connecting to building
power.
Power ON
Low water
High water
Water feed
High pressure
Low pressure
Blow down operating
Optional input / output
Alarm
Operating pressure (via a 0-10 Vdc
signal)