Titus DLSC Installation, Operation And Maintenance Manual

Low profile, series fanpowered terminal unit with sensible cooling coil

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Installation, Operation and
DLSC-IOM-1.0
Maintenance
4-23-20
Low Profile, Series FanPowered Terminal Unit with
Sensible Cooling Coil
SAFETY WARNING
Model: DLSC Rev A
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 equipment.
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.
Titus reserves the right to make changes without written notice.
All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or by any information storage retrieval system without permission in writing from Tomkins Industries, Inc.

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Summary of Contents for Titus DLSC

  • Page 1 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. Titus reserves the right to make changes without written notice.
  • Page 2 DLSC-IOM-2.0 Warnings, Cautions and Notices. Note that warnings, WARNING cautions and notices appear at appropriate intervals throughout this manual. Warnings are provide to alert Proper Field Wiring and Grounding Required! installing contractors to potential hazards that could result in death or personal injury. Cautions are designed to alert...
  • Page 3: General Information

    General Information The DLSC units are intended for single or multi zone applications with an airflow range of 400 to 1850 CFM. The DLSC 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.
  • Page 4: Pre-Installation

    For of the damage by the carrier and consignee. variable frequency drives or other energy storing components provided by Titus or others, refer to the Notify your Titus representative of the damage and appropriate manufacturer’s literature for allowable waiting arrange for repair.
  • Page 5: Service Access

    Control Enclosure Access Return Air Coil Connections Access Bottom Access Area for Service & Maintenance Notes: 1. Right Hand unit shown. Control enclosure dictates the handing of the unit. 2. All DLSC units are installed with removable bottom access panels.
  • Page 6: Unit Labels

    There may be other labels attached to the unit, as options or codes may require. If you have any questions, please contact the local TITUS Representative for clarification. Have the key points from the Air Flow label available for reference before calling.
  • Page 7: Ductwork Recommendations

    Titus recommends using galvanized sheet • Insulate all piping to coil connections as necessary metal ductwork with the DLSC units. All duct connections after connections and pressure test are complete. should be sealed and fasten with sheet metal screws.
  • Page 8: Installation - General

    DLSC-IOM-8.0 Installation – General Installing the Unit Hanger Brackets Follow the procedures below to install the unit properly. Refer to submittal for specific unit dimensions and mounting hole locations. Top View NOTICE Electrical Wiring! Do not allow electrical wire to fall between the unit and installation surface.
  • Page 9: Installation Checklist

    DLSC-IOM-9.0 Installation Checklist 8. Complete all necessary duct connections. WARNING Hazardous Voltage w/Capacitors! 9. Install the filed supplied controls. Disconnect all electric power, including remote 10. Complete all interconnection wiring. disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/ 11.
  • Page 10: Installation - Electrical

    Standard fuse sizes are: 15, 20, 25, 30, 35, 40, 45, 50, 60 amps. DLSC Unit electric heat MBh = (heater kW)*(3.413)
  • Page 11: Ecm Overview And Setup

    Filters should be installed where required. 3. The LSC unit is equipped with either a manual control or This section addresses the Titus ECM motor which is a remote control PWM fan speed controller, mounted on standard on all LSC units. The ECM motor provides the side of the line voltage control enclosure.
  • Page 12: Operation

    1 and 99. Long flashes Titus. Refer to the fan specifications, data and charts to represent the tens digit, and short flashes represent the convert the flow index to torque or mass airflow.
  • Page 13 DLSC-IOM-13.0 ECM Overview and Setup Remote PWM Signal Interface Board Details Input / Outputs Input Jumpers Power Supply: 18-30 VAC, 60Hz M – Enables SET SPEED potentiometer SIGNAL & COMMON: 0-10VDC = 0-100% PWM request manual override (bypassed when ECM supplied feedback: 5VDC (motor at rest or not connected) automation SIGNAL exceeds 0.2VDC).
  • Page 14: Pre-Start-Up

    DLSC-IOM-14.0 Pre Start-Up Pre-Startup Checklist Unit Piping 1. Properly vent the hydronic coil to allow water flow Complete this checklist after installing the unit to verify all through the unit. recommended installation procedures are complete before unit startup. This does not replace the detailed instructions 2.
  • Page 15: Maintenance Procedures

    DLSC-IOM-15.0 Maintenance Maintenance Procedures Coil Maintenance Perform the following maintenance procedures to ensure proper unit operation. Keep coils clean to maintain maximum performance. For operation at its highest efficiency, clean the coil often WARNING during periods of high demand or when dirty conditions prevail.
  • Page 16: Maintenance (Cont)

    DLSC-IOM-16.0 Maintenance (Cont) Hydronic Coil Cleaning Procedure Work Instruction Steps In general, replacement of a motor needs to be carried out 1. Disconnect all electrical power to the unit. 2. Don the appropriate personal protective equipment as follows: (PPE). 3. Access both sides of the coil.

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