Leslie Controls NYC Heat Exchanger User Manual
12501 Telecom Drive, Tampa Florida 33637
Installation, Operating and
Maintenance Instructions
Supplement
90/0.5.0
Rev. 5
DOUBLE SHELL & TUBE HEAT EXCHANGER
TABLE OF CONTENTS
INTRODUCTION .............................................................................................6
GENERAL NOTES AND WARNINGS ................................................................................................................................... 6
INSTALLATION AND OPERATION............................................................6
A. INSTALLATION ............................................................................................................................................................ 7
B. PIPE CONNECTIONS ......................................................................................................................................................... 7
C. ELECTRICAL CONNECTIONS .................................................................................................................................... 7
D. OPERATION OF NORMAL RECIRCULATION PUMP ...................................................................................................8
E. OPERATION OF SECOND RECIRCULATION PUMP..................................................................................................... 8
F. OPERATION OF SWITCH PANEL.....................................................................................................................................9
G. OPERATION DUE TO OVER TEMPERATURE CONDITIONS ...................................................................................... 9
H. GENERAL SETUP AND OPERATION OF BLEND VALVE.......................................................................................... 10
I. GENERAL OPERATION OF HEAT EXCHANGERS................................................................................................. 11
J. GENERAL OPERATING PRINCIPLE............................................................................................................................... 11
STORAGE AND TRANSPORTATION................................................................................................................................ 12
STARTUP ........................................................................................................................................................................... 13
CLEANING......................................................................................................................................................................... 13
CERTIFICATION ...............................................................................................................................................................14
1. GENERAL OPERATION OF RELIEF VALVE........................................................................................................... 14
REPLACEMENT PARTS ..............................................................................14
A. RECIRCULATION PUMP................................................................................................................................................. 14
D. BLEND VALVE............................................................................................................................................................14
MAINTENANCE.............................................................................................15
TROUBLESHOOTING..................................................................................17
UNIT SEPARATION FOR INSTALLATION.............................................18
UNIT STARTUP AFTER INSTALLATION...............................................20
LIST OF ILLUSTRATION
F
IGURE 1 - TYPICAL HEATER ILLUSTRATION
F
IGURE 2 – CONTROL BOX
F
IGURE 3 - SWITCH BOX
F
IGURE 4 – LESLIE ELECTRICAL SCHEMATIC
F
IGURE 5 - MOTOR CONDUIT BOX WIRING DETAIL
F
IGURE 6 - PUMP SECTIONAL DRAWING
F
IGURE 7 - CROSS SECTION
F
IGURE 8 – FLOW DISTRIBUTION IN HEAT EXCHANGERS
F
IGURE 9 - FLOW DISTRIBUTION IN HEAT EXCHANGERS
F
IGURE 10 - THREADED AND FLANGED (COMPATIBLE WITH CL
F
IGURE 11 - COMPLETE INSTALLATION DIAGRAM
F
IGURE 12 - INSULATION TIED WITH STRAPS
F
IGURE 13 -
F
IGURE 14 -
MODEL B............................................................................................................................................................................15
MODEL C............................................................................................................................................................................15
.........................................................................................................................................................................4
.............................................................................................................................................................................5
......................................................................................................................................................................11
..............................................................................................................................................3
..............................................................................................................................................7
....................................................................................................................................8
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.........................................................................................................................11
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Leslie Controls Inc
IOM Manual
(With the 130F Element)
For All Serial Numbers EXCEPT:
S#-0712-3
S#-0712-1
S#-0711-11
S#-0807-1
S#-0804-1
S#-0712-5
S#-0712-4
S#-0802-2
S#-0712-7
S#-0801-2
S#-0801-6
S#-0712-9
S#-0712-6
S#-0802-6
S#-0802-9
S#-0803-6
S#-0802-8
S#-0801-5
S#-0802-4
S#-0801-3
S#-0802-1
S#-0801-8
S#-0802-7
300)
CONNECTIONS
................................................................................12
Page 2 of 25
Figure 1 - Typical Heater Illustration
Page 3 of 25
Figure 2 – Control Box
Page 4 of 25
Figure 3 - Switch Box
Page 5 of 25
Injury or death can occur due to failure to completely
isolate component from all sources of pressure before
beginning disassembly. Do not proceed until component
has been completely isolated from process stream and
WARNING!
vented to atmosphere.
Injury can occur due to adjusting secondary
temperature switches higher than 130 degrees F.
Check this setting before supplying steam to the unit.
WARNING!
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. Double Shell Tube. Leslie
reserves right to update this manual and/or 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 product literature supplied by
manufacturers of components used in Leslie Controls, Inc.
Double Shell Tube, Leslie strives to use only highest
quality components; however, Leslie has no direct control
over manufacture or its consistent quality.
Leslie is not responsible for injury to personnel or product
damage due to improper installation, operation, and/or
maintenance of Leslie Controls, Inc. Double Shell Tube.
Trained/certified personnel should only perform all
installation, operation, and maintenance procedures.
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. All personnel performing 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’s 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: (813) 978-1000
USA Fax: (813) 978-0984
www.LesleiControls.com
To order replacement parts, contact Leslie Controls at
address listed above, or call toll free:
USA/Canada/Caribbean Phone: (800) 323-8366
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:
• 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.
• 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 valves.
3. Contact in-house maintenance personnel or
Leslie Controls, Inc. for instructions.
Note: Throughout this manual, BOXES will denote
warnings and cautions
Piping system must be adequately designed and
supported to prevent extraordinary loads to pressure
CAUTION!
equipment.
INSTALLATION AND
OPERATION
Page 6 of 25
A. INSTALLATION
WARNING!
After connecting inlet cold water, outlet hot water, Steam
inlet, re-circulation inlet, safety relief valve drains and
condensate piping, lag unit to concrete floor.
Safety Relief valves and condensate drain must be
connected properly to drainage, to insure no hot water
1. Shut off cold water valves to secondary blend
valves.
2. Insure that cold water supply to primary blend
valves is turned on.
3. Slowly supply water pressure to primary blend
valves after full water pressure is reached then
open up cold water supply to secondary blend
valves slowly.
4. Slowly supply steam to unit, up to 8 psig.
Water pressure must be supplied slowly to the inlet of
the unit so that the solenoid valves are pressurized
correctly. If not, then correct temperature adjustment
CAUTION!
can contact people.
IMPORTANT!
CAUTION!
may not be possible.
B. PIPE CONNECTIONS
Connection Drawing symbol
Inlet water M
Outlet Hot water N
Inlet Steam L
Re-circulation Inlet P
Condensate Outlet R
Model Connection Conn. Size
NYCHA60
NYCHA90
Inlet water 2” F NPT
Outlet Hot water 2” F NPT
Inlet Steam 4” RF
Outlet Condensate ¾”F NPT
Inlet water 2” F NPT
Outlet Hot water 2” F NPT
Inlet Steam 4” RF
Outlet Condensate ¾”F NPT
Inlet water 2” F NPT NYCHA120
Outlet Hot water 2” F NPT
Inlet Steam 4” RF
Outlet Condensate ¾”F NPT
NYCHA150
Inlet water 2” F NPT
Outlet Hot water 2” F NPT
Inlet Steam 4” RF
Outlet Condensate ¾”F NPT
C. ELECTRICAL CONNECTIONS
Be certain that all connections are secure and the
conduit box cover is closed before electrical power is
connected. Failure to follow these instructions could
result in serious personal injury, death and/or property
damage.
See drawing for latest revision of wiring.
ELECTRICAL SHOCK HAZARD
Figure 4 – Leslie Electrical Schematic
Page 7 of 25
Schematic Component Descriptions
1. Power on Light:
• Indicates that power is being supplied to
system.
• Fuse F1 blown, burnt out light or
disconnection of power will cause light to go
out.
2. No flow light:
• Will light red when pressure switch
(PS1) senses no pressure across pumps.
3. Reset Switch:
• This switch is only used if unit was set up so
that it will not automatically reset. It is a
manual switch that will unlatch latched relay
and set all switches back to start position
after an over temperature condition was seen
by unit .
• Note, this switch is not required if unit is
setup for automatic restart.
4. P1/P2 Switch:
• Turns first pump on and second pump off or
vice versa.
• Front panel light will identify active pump.
5. Primary and secondary over temperature
switches:
• If either primary or secondary switch sees an
over temperature condition, then:
1. Solenoid supplying hot water is de-
energized to the shut position.
2. Latching relay and over temperature
light are energized.
3. Power to re-circulation pump is cut off.
4. Latching relay supplies power to three
way condensate diverting valve and
Three way condensate diverting valve
diverts hot condensate water away from
cooler and sends it directly to condensate
return line.
• Latching relay:
1. Upon an over temperature condition,
latch will hold three way condensate
diverting valve in diverting position until
over temperature switch has reset and
over temperature condition no longer
exists. It will then allow diverting valve
to go back to sending condensate water
to cooler.
6. Auto/Manual Switches:
• Perform same function as primary and
secondary temperature over temperature
switches.
Manufacture’s IOM must be referred to. This IOM is
CAUTION!
FOR GENERAL USE ONLY .
Pump Connections
Figure 5 - Motor Conduit Box Wiring Detail
D. OPERATION OF NORMAL
RECIRCULATION PUMP
PERIODIC INSPECTION
It is recommended that periodic inspections be made to
check for potential problems with pump. If any leakage or
evidence of leakage is present, repair or replace unit.
Figure 6 - Pump Sectional Drawing
“P-1” pump is used under normal situations. Green light
for “P-1” is lit and red light for “NO-FLOW” is not lit. If
this pump should fail then Red light for “NO_FLOW” will
light. Follow instructions for isolating this pump and
starting secondary pump.
E. OPERATION OF SECOND
RECIRCULATION PUMP
This pump is used under maintenance situations. Light for
“P-2 is lit and red light for “NO-FLOW” is not lit. If this
Page 8 of 25
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