Leslie Controls LVSG User Manual

Installation, Operating

and Maintenance

Instructions

90/6.5.0

Rev. 1

UNFIRED STEAM GENERATOR

LVSG SERIES

TABLE OF CONTENTS

INTRODUCTION ...................................................................................................................................................................................2

CONTACT INFORMATION.................................................................................................................................................................2

GENERAL NOTES AND WARNINGS ................................................................................................................................................2

C

ONNECTING ELECTRIC POWER SOURCE

CONTROLLER – OVERVIEW.............................................................................................................................................................3

CONTRACTOR WIRING......................................................................................................................................................................4

RATINGS.................................................................................................................................................................................................5

CONTROLLER SCREENS....................................................................................................................................................................5

SETTING CONTROLLER ....................................................................................................................................................................5

SCREEN LISTING..................................................................................................................................................................................5

INSTRUCTIONS FOR SETTING EACH SCREEN ...........................................................................................................................6

TERMINAL BOARD LAYOUT............................................................................................................................................................9

TROUBLE SHOOTING .......................................................................................................................................................................11

................................................................................................................................................3

INTRODUCTION

This Installation, Operation, and Maintenance Manual is
intended to be as complete and up to date as possible. It covers
installation, operation, and maintenance procedures for Leslie
Controls, Inc. Unfired Steam Generator and 2001 SSCM
control module. Leslie reserves right to update this manual
and other product information concerning installation,
operation, and/or maintenance, at any time and without
obligation to notify product owners of such changes.

Leslie is not responsible for inaccuracies in specifications,
procedures and/or content of other product literature, supplied
by manufacturers of components used in Leslie Controls, Inc.
Unfired Steam Generator and 2001 SSCM control module
Leslie strives to use only highest quality components;
however, LESLIE has no direct control over their ­manufacture, or their consistent quality.

Leslie is not responsible for injury to personnel or product
damage due to improper installation, operation, and/or
maintenance Leslie Controls, Inc. Unfired Steam Generator
and 2001 SSCM control module. All installation, operation,
and maintenance procedures should only be performed by
trained/certified personnel. All personnel performing these
procedures should completely and carefully read and
understand all supplied materials before attempting
procedures. All personnel should pay strict attention to all
Notes, Cautions, and Warnings that appear within procedures
detailed in this manual.

Leslie welcomes user input as to suggestions for product or
manual improvement.

Contact Information

For information concerning warranties, or for questions
pertaining to installation,
operation or maintenance of LESLIE products, contact:

LESLIE CONTROLS INC.
12501 Telecom Drive
Tampa, FL 33637
USA Phone: [phone]
USA Fax: [phone]
www.LESLIECONTROLS.com

To order replacement parts, contact LESLIE CONTROLS at
address listed above, or call toll free:

USA/Canada/Caribbean Phone: [phone]

Note: Please include model and serial number of unit for
which parts are being ordered. If ordering by phone, please
have this information readily available.

General Notes and Warnings

Notes:

• This manual is intended to cover installation, operation,

and maintenance procedures for Leslie Controls, Inc.
Unfired Steam Generator and 2001 SSCM control
module.

• If questions are not answered by this manual, or if

specific installation, operation, and/or maintenance
procedures are not clearly understood, contact Leslie
Controls, Inc. for clarification before proceeding.

• All installation, operation, and maintenance procedures

should be performed only by experienced, trained and
certified personnel. Personnel should be trained in and
familiar with correct piping and electrical procedures
and methods, and should be experienced in working with
hot/boiler water systems and steam systems.

• Leslie Controls, Inc. Unfired Steam Generator and 2001

SSCM control module and other electronic controls are
designed for indoor use only, unless otherwise required
by design specifications.

• If unit is damaged during installation, operation, or

maintenance, complete following steps:

1. Turn off and lock out electric power supply to unit in
an approved manner.

2. Turn off all incoming steam/hot water valves.

3. Contact in-house maintenance personnel or Leslie
Controls, Inc. for instructions.

Note: Throughout this manual, warnings will be denoted
by BOXES

- 2 -

Warnings

As with any piece of equipment that utilizes hot/boiler
water or steam and electricity, potential exists for
severe personal injury if proper installation,
operation, and maintenance procedures are not
followed. Listed on following pages are specific
warnings pertaining to LESLIE Electronic Controls.

All warnings should be carefully read and
understood. All precautions contained in warnings

should be carefully followed to reduce chance of
injury.

All documentation for each major component has been
included with unit. It is strongly recommended that each
document be reviewed before attempting any installation,
operation, or maintenance procedures.
documentation for each major component may also contain
warnings and cautions identified by manufacturer of each
component. These warnings and cautions may be specific for
particular component, and therefore not covered in this general
Installation, Operation, and Maintenance Manual. They should
also be carefully reviewed before attempting installation,
operation, or maintenance procedures.

combination of electricity and water can pose a very

dangerous situation. Assure that all power has been
shut off/disconnected and locked out in an

appropriate manner, before attempting any installation
or maintenance procedures.

!

WARNING!

WARNING!

WARNING!

Areas of potential danger:

1. All electric power leads and connections;

Hot/boiler water and steam present a situation that can
be very dangerous due to fact it is under pressure and
at very high temperatures. To avoid possible injury or
death, use common sense and follow all accepted and
recommended procedures when performing
installation, operation, and maintenance procedures.

WARNING!

Connecting Electric Power Source

All installation procedures involving electric power
connection should only be performed by trained,
certified electricians.

WARNING!

WARNING!

Hot/boiler water and steam present a situation that can
be very dangerous because of high temperatures and
pressures. Use common sense and follow all accepted
and recommended procedures when performing
installation, operation, and maintenance procedures to
avoid possible injury or death.

combination of electricity and water can pose a very
dangerous situation. Assure that all power has been
shut off/disconnected and locked out in an approved
manner, before attempting any installation or
maintenance procedures.

WARNING!

2. All hot/boiler water lines, steam lines, joints,
valves, and relief valves; and

3. All joints at valve, gauges, etc.

WARNING!

Before attempting any installation, operation, or
maintenance procedures pertaining to unit.

1. Assure that electric power supply has been turned

off and locked out in an approved manner;

LESLIE Steam Generators have been wired during assembly.
Connecting electric power supply to unit consists of
connecting correct voltage, phase, and amperage power leads
to terminal strip or circuit breaker. Exact voltage, phase, and ­amperage requirements for unit can be determined from rating
plate affixed to jacket of unit, or from Submittal Sheet and
Wiring Diagrams supplied with unit

Controller – Overview

LESLIE SSCM 2001 control module is a solid state controller
designed to control limit, water feed, alarm, and timed
blowdown functions for LESLIE unfired steam generators.

- 3 -

Solid State Control Module is supplied with a LED backlit
LCD display. LED pilot lights are supplied to indicate On­Off, 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.

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)

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

Low water Green = Water

level not low
High
pressure
Water feed Green = Water

High water Green = Water

Low
pressure
Blow down
operating
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.

Green = Normal

pressure

feeding

level normal

Green = Pressure

not low

Green=Blowdown

occurring

Blank = No power

Red = Low water

Red = High
pressure
Blank = Water not
called for
Red = High water

Red = Low
pressure
Blank = No
Blowdown

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.

- 4 -