Titus LSC User Manual
Installation, Operation and
TU-LSC-IOM-1.0
Maintenance
Low Profile, Series Fan Powered Terminal Unit with
Sensible Cooling Coil
(400 to 1800 cfm)
11-16-12
Model: LSC RevA
SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating,
and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or
altered equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all
precautions in the literature and on the tags, stickers, and labels that are attached to the equipm
This IOM is meant to demonstrate general dimensions and information of this product. The drawings are not meant to detail every aspect of the product. Drawings are not to scale.
®
605 Shiloh Road • Plano, Texas 75074• 972-212-4800
All rights reserved. No part of this work may be reproduced or transmitted in any form or any means, electronic or mechanical, including photocopying and recording, or by any information storage retrieval system without permission in writing from Air Distribution Technologies
Titus reserves the right to make changes without written notice.
ent.
TU-LSC-IOM
Warnings, Cautions and Notices. Note that warnings,
cautions and notices appear at appropriate intervals
throughout this manual. Warnings are provide to alert
installing contractors to potential hazards that could result in
death or personal injury. Cautions are designed to alert
personnel to hazardous situations that could result in
personal injury, while notices indicate a situation that could
result in equipment or property-damage-only accidents.
Your personal safety and the proper operation of this
machine depend upon the strict observance of these
precautions. Read this manual thoroughly before operating
or servicing this unit.
ATTENTION: Warnings, Cautions and Notices appear at
appropriate sections throughout this literature. Read these
carefully:
WARNING Indicates a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
CAUTION Indicates a potentially hazardous situation which,
if not avoided, could result in minor or moderate injury. It
could also be used to alert against unsafe practices.
NOTICE: Indicates a situation that could result in
equipment or property-damage only
WARNING
Proper Field Wiring and Grounding Required!
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements
for field wiring installation and grounding as described
in NEC and your local/state electrical codes. Failure to
follow code could result in death or serious injury.
WARNING
Personal Protective Equipment (PPE) Required!
Installing/servicing this unit could result in exposure
to electrical, mechanical and chemical hazards.
Before installing/servicing this unit, technicians
MUST put on all Personal Protective Equipment
(PPE) recommended for the work being
undertaken. ALWAYS refer to appropriate MSDS
sheets and OSHA guidelines for proper PPE.
When working with or around hazardous
chemicals, ALWAYS refer to the appropriate MSDS
sheets and OSHA guidelines for information on
allowable personal exposure levels, proper
respiratory protection and handling
recommendations.
If there is a risk of arc or flash, technicians MUST
put on all Personal Protective Equipment (PPE) in
accordance with NFPA 70E or other countryspecific requirements for arc flash protection,
PRIOR to servicing the unit.
Failure to follow recommendations could result in
death or serious injury.
2
Warnings, Cautions and Notices 2
Model Number Descriptions 4
General Information 6
Pre-Installation
Receiving and Handling 7
Shipping Package 7
Receiving Check List 7
Jobsite Storage 7
Installation Preparation 7
Service Access 8
Pre-Installation Check List 8
Components Data 9
Unit Dimensions 10
Coil Flange Connections 11
Weights 12
Water Coil Pipe Connections 13
Installation Mechanical
Duct Connections 14
Duct Work Recommendations 14
Hydronic Piping Consideration 14
Condensate Drain Connection 14
External Insulation Requirements 15
TU-LSC-IOM
Installation General - Hanging the Unit 16
Installation Check List 17
Installation Electric
Unit Wiring Diagrams 18
Supply Power Supply 18
Electric Heater Min-Max KW – Unit size 3 19
Electric Heater Min-Max KW – Unit size 4 20
ECM Motor Overview and Setup
Overview 21
General Information 21
ECM Motor Fan Flow Adjustment 21
Manual PWM Signal Interface Board 22
Operation 22
Remote PWM Signal Interface Board 22
Jumper Setup 23
Input / Output Control Signals 23
Remote Control Air Balance 23
Manual Air Balance 23
Pre-Startup Checklist 24
Maintenance
Maintenance Procedures 25
Air Filter 25
Inspecting and Cleaning Condensate Pans 25
Coil Maintenance 25
Inspecting and Cleaning Coils 25
Hydronic Coil Cleaning Procedures 26
Winterizing the Coil 26
Replacing Motors 26
Periodic Maintenance Check List 26
3
TU-LSC-IOM
LSC – Low Profile Series Fan Powered Terminal Unit
with Cooling Coil
Following is a complete description of the LSC model
number. Each digit in the model has a corresponding
code that identifies specific unit options.
Digit 1, 2, 3, 4 – Unit Type
LSC = Basic Unit
LSCX = Special Unit
Digit 5, 6 – Cabinet Size
03 = Unit size 3
04 = Unit size 4
XX = Special
Digit 7 – Cabinet Configuration
R = Right Hand Control Enclosure
L = Left Hand Control Enclosure
X = Special
Digit 8, 9 – Cabinet Material
2G = 20Ga Galvanized Steel Cabinet
XX = Special
Digit 10 – Cabinet Liner
J = EcoShield Matte faced ½”
L = EcoShield Foil Faced ½”
0 = Fiberglass Dual Density ½”
3 = fiberglass Foil Faced ½”
9 = FiberFree ½”
X = Special
Digit 11 – ECM Motor Power Supply
1 = ECM motor 120V/1Ph/60Hz
2 = ECM Motor 208V/1Ph/60Hz
3 = ECM Motor 277V/1Ph/60Hz
X = Special
Digit 26 – Airflow Measuring Sensor
0= None
3= Aerocross
X = Special
Digit 27,28,29 – Cooling and Heating coils
200 = 2 Rows Cooling only coil
201 = 2 Rows Cool + 1 Row Heating coil
400 = 4 Rows Cooling only coil
401 = 4 Rows Cool + 1 Row Heating coil
XXX = Special
Digit 30, 31 – Filter (Optional Accessories)
00 = None
F1 = 1 x 1" Filter – NOT Ducted
F2 = 1 x 1" Filter + Spare Filter - NOT Ducted
F3 = 1 x 2" Filter – NOT Ducted
F4 = 1 x 2" Filter + Spare Filter - NOT Ducted
F5 = 1 x 1" Filter – Ducted
F6 = 1 x 1" Filter + Spare Filter - Ducted
F7 = 1 x 2" Filter – Ducted
F8 = 1 x 2" Filter + Spare Filter – Ducted
XX = Special
Digit 32,33 – Motor Fuses ( Optional Accessories)
00 = None
MF = Motor Fuses
XX = Special
Digit 34,35 –Unit Accessories
(Optional Accessories)
0= None
B = Hanger Brackets
Y = Slip & Drive Adaptor (Fan Discharge)
X = Special
Digit 36,37,38,39 – Controller
(Optional Accessories)
0000 = None
XXXX = Special
Digit 12 – Motor Control
M = Manual Control Board
R = Remote PWM Control
X = Special
Digit 13 – Primary Inlet Size
4 = 4" Diameter
6 = 6" Diameter
8 = 8" Diameter
22 = 16" x 8" Rectangular
XX = Special
Digit 14,15,16,17 – Minimum Primary Airflow (cfm)
Digit 18,19,20,21 – Maximum Primary Airflow (cfm)
Digit 22,23,24,25 – Fan Airflow (cfm)
Digit 40,41,42,43 – Damper Actuator (
Optional Accessories)
0000 = None
DT01 = Electronic Damper Actuator – Titus
XXXX = Special
Digit 44,45,46,47 – Controls Optional Accessories
0= None
D = Disconnect Switch (Non Fused)
E = Control Enclosure
G = Dust Tight Control Enclosure
T = Dust Tight Disconnect Switch
X = Special
4
TU-LSC-IOM
Digit 48,49,50 – Electric Heaters Type
0= None
E21 = 208V/1Ph 1Stage
E22 = 208V/1Ph 2 Stages
E23 = 208V/1Ph 3 Stages
E31 = 240V/1Ph 1Stage
E32 = 240V/1Ph 2 Stages
E33 = 240V/1Ph 3 Stages
E41 = 277V/1Ph 1Stage
E42 = 277V/1Ph 2 Stages
E43 = 277V/1Ph 3 Stages
E61 = 208V/3Ph 1Stage
E62 = 208V/3Ph 2 Stages
E63 = 208V/3Ph 3 Stages
E91 = 480V/3Ph 1Stage
E92 = 480V/3Ph 2 Stages
E93 = 480V/3Ph 3 Stages
E21 = 208V/1Ph 1Stage
E22 = 208V/1Ph 2 Stages
E23 = 208V/1Ph 3 Stages
L21 = 208V/1Ph Lynergy PWM
L22 = 208V/1Ph Lynergy 2 Stage
L23 = 208V/1Ph Lynergy 0-10V or 0-20mA
L24 = 208V/1Ph Lynergy 2-10V or 4-20mA
L25 = 208V/1Ph Lynergy Incremental T-stat
L26 = 208V/1Ph Lynergy Binary
L27 = 208V/1Ph Lynergy 3 Point Floating
L31 = 240V/1Ph Lynergy PWM
L32 = 240V/1Ph Lynergy 2 Stage
L33 = 240V/1Ph Lynergy 0-10V or 0-20mA
L34 = 240V/1Ph Lynergy 2-10V or 4-20mA
L35 = 240V/1Ph Lynergy Incremental T-stat
L36 = 240V/1Ph Lynergy Binary
L37 = 240V/1Ph Lynergy 3 Point Floating
L41 = 277V/1Ph Lynergy PWM
L42 = 277V/1Ph Lynergy 2 Stage
L43 = 277V/1Ph Lynergy 0-10V or 0-20mA
L44 = 277V/1Ph Lynergy 2-10V or 4-20mA
L45 = 277V/1Ph Lynergy Incremental T-stat
L46 = 277V/1Ph Lynergy Binary
L47 = 277V/1Ph Lynergy 3 Point Floating
L61 = 208V/3Ph Lynergy PWM
L62 = 208V/3Ph Lynergy 2 Stage
L63 = 208V/3Ph Lynergy 0-10V or 0-20mA
L64 = 208V/3Ph Lynergy 2-10V or 4-20mA
L65 = 208V/3Ph Lynergy Incremental T-stat
L66 = 208V/3Ph Lynergy Binary
L67 = 208V/3Ph Lynergy 3 Point Floating
L91 = 480V/3Ph Lynergy PWM
L92 = 480V/3Ph Lynergy 2 Stage
L93 = 480V/3Ph Lynergy 0-10V or 0-20mA
L94 = 480V/3Ph Lynergy 2-10V or 4-20mA
L95 = 480V/3Ph Lynergy Incremental T-stat
L96 = 480V/3Ph Lynergy Binary
L97 = 480V/3Ph Lynergy 3 Point Floating
Digit 51,52,53 – Electric Heaters KW rating
1.0 = 1.0 KW
1.5 = 1.5 KW
(Refer to 19 & 20 for available KW rating for alternative
power supply voltages)
Digit 54 – Mercury Contactor
0= None
B = Mercury Contactor
X = Special
Digit 55 – Electric Heater Disconnect Switch and Fuses
0= None
C= Fuses
D = Disconnect Switch Door Interlock Fused
E = Disconnect Switch Door Interlock
X = Special
Digit 56, 57, 58 – Electric Heater Accessories
0= None
F = Secondary Manual Reset Cutout
G = Dust Tight Enclosure
T = Lynergy Discharge Limit Temp Sensor
X = Special
5
TU-LSC-IOM
General Information
The LSC units are intended for single or multi zone applications with an airflow range of 400 to 1850 CFM. The LSC units
incorporate as standard a Primary Air damper which receives air from a Dedicated Outside Air system (DOAS), high
efficiency ECM motor(s) and are available as two-pipe systems with or without electric heat (one hydronic circuit), four-pipe
system (two hydronic circuits) or four-pipe with standby electric heating. The unit mounted low voltage 24 VAC, 50VA
Class II transformer provides low voltage to the ECM motor controls and connections field mounted controller/damper
actuator. See Figure 1 for unit components.
FIGURE 1: LSC Unit Major Components (Unit Size 3 shown)
Primary Air Inlet c/w:
Aerocross – Airflow measuring device
Damper Blade
Control Enclosure
EcoShield Liner
ECM Motor
DWDI Centrifugal
Blower
Electric Heater
(Optional)
Sensible Cooling Coil
and
Hot Water Coil
Filter MERV8 (Optional)
Return Air:
Non Ducted (STD)
Ducted Flange (Optional)
Condensate Pan
6
Pre - Installation
TU-LSC-IOM
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects
and discharge all motor start/run capacitors before
servicing. Follow proper lockout/ tagout procedures to
ensure the power cannot be inadvertently energized. For
variable frequency drives or other energy storing
components provided by Titus or others, refer to the
appropriate manufacturer’s literature for allowable waiting
periods for discharge of capacitors. Verify with an
appropriate voltmeter that all capacitors have discharged.
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Receiving and Handling
Upon delivery, inspect all components for possible
shipping damage. See “Receiving Checklist” (below) for
detailed instructions. Titus recommends leaving units and
accessories in their shipping packages/skids for protection
and ease of handling until installation.
Shipping Package
The LSC units are multi packed and ship in pallets for
handling and storage ease. Each Unit has tagging
information such as the model number, sales order
number, serial number, unit size, piping connections, and
unit style to help properly locate the unit in the floor plan. If
specified, the unit will ship with tagging designated by the
customer.
Do not continue unpacking the shipment if it appears
damaged. Retain all internal packing, cartons, and crate.
Take photos of damaged material.
Notify the carrier’s terminal of the damage immediately
by phone and mail. Request an immediate joint inspection
of the damage by the carrier and consignee.
Notify your Titus representative of the damage and
arrange for repair. Have the carrier inspect the damage
before making any repairs to the unit.
Compare the electrical data on the unit nameplate with
the ordering and shipping information to verify the correct
unit is received.
Jobsite Storage
This unit is intended for indoor use only. Store the unit
indoors to protect the unit from damage due to the
elements. If indoor storage is not possible, make the
following provisions for outdoor storage:
1. Place the unit(s) on a dry surface or raised off the
ground to assure adequate air circulation beneath unit and
to assure that no portion of the unit contacts standing water
at any time.
2.Cover the entire unit with a canvas tarp only. Do not use
clear, black or plastic tarps as they may cause excessive
moisture condensation and equipment damage.
Receiving Checklist
Complete the following checklist immediately after
receiving unit shipment to detect possible shipping
damage.
Inspect individual pallets before accepting. Check for
rattles, bent corners, or other visible indications of
shipping damage.
If a unit appears damaged, inspect it immediately before
accepting the shipment. Manually rotate the fan wheel to
ensure it turns freely. Make specific notations concerning
the damage on the freight bill. Do not refuse delivery.
Inspect the unit for concealed damage before it is stored
and as soon as possible after delivery. Report concealed
damage to the freight line within the allotted time after
delivery. Check with the carrier for their allotted time to
submit a claim.
Do not move damaged material from the receiving
location. It is the receiver’s responsibility to provide
reasonable evidence that concealed damage did not occur
after delivery.
Installation Preparation
Before installing the unit, consider the following unit
location recommendations to ensure proper unit operation.
1. Clearances: Allow adequate service and code
clearances as recommended in “Service Access” (the next
section). Position the unit and skid assembly in its final
location.
2.Structural support: Ensure the structural support is strong
enough to adequately support the unit. The installer is
responsible for supply support rods for installation of ceiling
units.
3.Level: To ensure proper unit operation, install the unit
level (zero tolerance) in both horizontal axes. Failure to
level the unit properly can result in condensate
management problems, such as standing water inside the
unit.
4.Condensate line & piping: Consider coil piping and
condensate drain requirements. Verify condensate line is
continuously pitched 1 inch per 10 feet of condensate line
run to adequately drain condensate.
7
TU-LSC-IOM
Pre – Installation (Cont.)
5. Wall & ceiling openings: concealed units require wall/
ceiling openings. Refer to submittal for specific dimensions
before attempting to install. Concealed units must meet the
requirements of the National Fire Protection Association
(NFPA) Standard 90A or 90B concerning the use of
concealed ceiling spaces as return air plenums. Refer to
the submittal for specific dimensions of ceiling openings.
Service Access
Service access is available from the bottom and sides of
the units. Units have removable bottom and side panels to
allow access into the unit. See Figure 2 for recommended
service and operating clearances. Units have front or back
piping connections. Reference piping locations by facing
the front of the unit (airflow discharges from the front). The
control panel is always on the opposite the piping.
Figure 2.
Control Enclosure Access
Min 3'
Pre-Installation Checklist
Complete the following checklist before beginning unit
installation.
Verify the unit size and tagging with the unit nameplate.
Make certain the ceiling is solid, and sufficient to support
the unit and accessory weights. See “Dimensions and
Weights” section.
Allow minimum recommended clearances for routine
maintenance and service. Refer to unit submittals for
dimensions.
Allow 4' of straight duct before the first takeoff or before
the discharge ductwork makes any turns.
FRONT
Air
Discharge
Return Air
Alternative
Condensate Pan
Removal
Bottom Access Area for
Min 3'
Notes:
1. Right Hand unit shown. Control enclosure dictates the
handing of the unit.
2. Condensate Pan may be removed from the front or rear
of the unit.
3.All LSC units are installed with removable bottom access
panels.
Service & Maintenance
Air
Primary
REAR
Coil Connections Access +
Condensate Pan removal
8
Components Data
Unit Size 03 04
Cooling Coil Data
TU-LSC-IOM
Heating Coil Data
Fan / Motor Data
Face Area (ft2)
L x D x H (in)
2 Row
4 Row
Volume (US Gal)
2 Row
4 Row
Fin per Inch
Face Area – ft2
1 Row
Volume – US Gal
1 Row
Fan Quantity
2.1875 2.1875
36 x 9 5/8 x 8 3/4 36 x 9 5/8 x 8 3/4
36 x 9 5/8 x 8 3/4 36 x 9 5/8 x 8 3/4
1.75 1.75
3.5 3.5
10 FPI 10 FPI
2.1875 2.1875
36 x 9 5/8 x 8 3/4 36 x 9 5/8 x 8 3/4
0.875 0.875
1 2
Size – Dia(in) x Width (in)
Motor Quantity
Motor Power (HP)
Filter Data
Quantity
Size L x H (Nominal in)
Type
Filtration Efficiency
Notes:
1. Filter dimensions are nominal dimensions
10 5/8 x 8 7/8 10 5/8 x 8 7/8
1 2
1 x 1/3 HP 2 x 1/3 HP
2 2
20 x 10 (each) 20 x 10 (each)
Pleated Pleated
MERV 8 MERV 8
9
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