Titus LSC Series Installation & Operation Manual

Low profile series fan powered terminal unit with sensible cooling coil

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I N STA L LAT I O N &
O P E RAT I O N M A N UA L
LSC
LO W PR OF IL E SE RIE S FA N
P O W ER ED TE RMI NAL U NI T W ITH
S E N SI BL E CO O LI NG C OI L
Redefine your comfort zone. ™ | www.titus-hvac.com

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Summary of Contents for Titus LSC Series

  • Page 1 LO W PR OF IL E SE RIE S FA N P O W ER ED TE RMI NAL U NI T W ITH S E N SI BL E CO O LI NG C OI L Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 2: Warnings, Cautions And Notices

    When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment. IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 3: Table Of Contents

    Coil Maintenance ................................27 Inspecting and Cleaning Coils ..........................28 Hydronic Coil Cleaning Procedures ........................28 Winterizing the Coil ............................. 28 Replacing Motors ..............................28 Periodic Maintenance Check List ........................29 Redefine your comfort zone. ™ | www.titus-hvac.com IOM - LSC...
  • Page 4: Model Number Descriptions

    8 = 8” Diameter Digit 40,41,42,43 – Damper Actuator (Optional Accessories) 22 = 16” x 8” Rectangular 0000 = None XX = Special DT01 = Electronic Damper Actuator – Titus XXXX = Special IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 5 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 Redefine your comfort zone. ™ | www.titus-hvac.com IOM - LSC...
  • Page 6: General Information

    Hot Water Coil Blower Filter MERV8 (Optional) Electric Heater (Optional) Return Air: Non Ducted (STD) Ducted Flange (Optional) Condensate Pan Figure 1: LSC Unit Major Components (Unit Size 3 shown) IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 7: Pre-Installation

    Request an immediate joint inspection of the damage by the WARNING carrier and consignee. Hazardous Voltage! • Notify your Titus representative of the damage and arrange for repair. Disconnect all electric power, including remote disconnects and Have the carrier inspect the damage before making any repairs to the unit.
  • Page 8: Service Access

    • Allow 4’ of straight duct before the first takeoff or before the discharge ductwork makes any turns. Condensate Pan may be removed from the front or rear of the unit. All LSC units are installed with removable bottom access panels. Figure 2 IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 9: Components Data

    Quantity Size L x H (Nominal in) 20 x 10 (each) 20 x 10 (each) Type Pleated Pleated Filtration Efficiency MERV 8 MERV 8 Note: Filter dimensions are nominal dimensions Redefine your comfort zone. ™ | www.titus-hvac.com IOM - LSC...
  • Page 10: Unit Dimensions

    IO M LSC Dimensions IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 11 Dimensions (continued) Redefine your comfort zone. ™ | www.titus-hvac.com IOM - LSC...
  • Page 12: Coil Flange Connections

    IO M LSC Coil Flange Connections Weights IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 13 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 14: Water Coil Pipe Connections

    IO M LSC Water Coil Connections IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 15: Installation Mechanical

    For variable frequency drives or other joints when soldering field connections to the coil to prevent leakage energy storing components provided by Titus or others, refer to the from occurring. appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors.
  • Page 16: Installation General - Hanging The Unit

    Installation - Mechanical (continued) EXTERNAL INSULATING REQUIREMENTS Insulate and vapor seal surfaces colder than surrounding air dew-point to prevent unplanned condensation. Titus recommends field-insulation of the following areas to prevent potential condensate problems: Supply and return water piping connections Condensate drain lines and connections...
  • Page 17 Install the bottom panel before starting the unit. If installed ensure condensate drain line is pitched one inch per ten feet of pipe away from the LSC unit Redefine your comfort zone. ™ | www.titus-hvac.com IOM - LSC...
  • Page 18: Installation Checklist

    Verify correct ceiling opening dimensions on unit submittals. Secure the unit and any accessory items properly to the ceiling support rods. Complete all piping connections correctly. IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 19: Installation Electric

    Unit transformer provides power to the LSC unit only. Field LSC Unit electric heat MBh = (heater kW)*(3.413) connections directly to the transformer may create immediate or premature unit component failure. Redefine your comfort zone. ™ | www.titus-hvac.com IOM - LSC...
  • Page 20: Electric Heater Min-Max Kw - Unit Size 3

    • Automatic reset thermal cutout (one per step) • Positive Pressure airflow switch • Magnetic Contactor per step for Analog and Digital controls and PE switch for each step for pneumatic units. IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 21: Electric Heater Min-Max Kw - Unit Size 4

    • Automatic reset thermal cutout (one per step) • Positive Pressure airflow switch • Magnetic Contactor per step for Analog and Digital controls and PE switch for each step for pneumatic units. Redefine your comfort zone. ™ | www.titus-hvac.com IOM - LSC...
  • Page 22: Ecm Motor Overview And Setup

    ECM Overview and Setup OVERVIEW ECM MOTOR FAN FLOW ADJUSTMENT This section addresses the Titus ECM motor which is standard on all LSC units. The ECM motor provides outstanding comfort, safety, and NOTICE performance with greatly reduced energy consumption compared to...
  • Page 23: Manual Pwm Signal Interface Board

    0-100 having a linear relationship to the minimum to maximum torque remote balancing dampers, if present. Adjust the speed control or airflow range specified by Titus. Refer to the fan specifications, data and to deliver the required CFM by measuring air quantity at the charts to convert the flow index to torque or mass airflow.
  • Page 24: Jumper Setup

    DDC Controller software tools. Please notice that a control signal less than 0.2Vdc may put the interface board into manual override. Avoid setting the DDC signal to less than 0.2Vdc. IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 25: Manual Air Balance

    Observe the RPM is at or near the RPM observed in step 2. Cycle the motor on/off 5 times. This clears the manual override function unless the “M” jumper is in place. Redefine your comfort zone. ™ | www.titus-hvac.com IOM - LSC...
  • Page 26: Pre-Startup Checklist

    Ensure the unit location is adequate for unit dimensions, ductwork, piping, and electrical connections. Ensure access and maintenance clearances around the unit are adequate. UNIT MOUNTING Ensure unit is installed level. IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 27: Maintenance

    2. Bottom removal – from the bottom of the coil side problems, increased airflow resistance and thus increased operating energy costs. If the coil surface dirt becomes wet, which commonly Redefine your comfort zone. ™ | www.titus-hvac.com IOM - LSC...
  • Page 28: Inspecting And Cleaning Coils

    Failure to properly drain and vent coils when not in use during Unscrew the motor from the fan housing and remove. freezing temperatures may result in coil freeze-up damage. Insert the replacement motor. IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 29: Periodic Maintenance Check List

    Inspect the coil fins for excessive dirt or damage. Remove dirt and straighten fins. Clean and tighten all electrical connections. Inspect the primary air damper and ensure that it rotates freely from o to 100% open. Redefine your comfort zone. ™ | www.titus-hvac.com IOM - LSC...
  • Page 30 IO M LSC Notes IOM - LSC Redefine your comfort zone. ™ | www.titus-hvac.com...
  • Page 31 Notes Redefine your comfort zone. ™ | www.titus-hvac.com IOM - LSC...
  • Page 32 605 Shiloh Rd Plano TX 75074 ofc: 972.212.4800 fax: 972.212.4884 Redefine your comfort zone. ™ | www.titus-hvac.com...

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