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NV SERIES
DEHUMIDIFIERS
OPERATIONS AND MAINTENANCE MANUAL
S e r e s c o D e h u m i d i f i e r s . c o m

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Summary of Contents for Seresco NV Series

  • Page 1 NV SERIES DEHUMIDIFIERS OPERATIONS AND MAINTENANCE MANUAL S e r e s c o D e h u m i d i f i e r s . c o m...
  • Page 2: Table Of Contents

    Table of Content General Information ........................2 Operating Safety (Warnings, Cautions, and Notes) ................... 2 Reference and Additional Information ...................... 3 Basic Information ............................4 Dehumidifier External Systems Connection ....................6 Layout and Components ........................ 8 Dehumidifier Main Components ....................... 8 Control System ............................
  • Page 3: General Information

    General Information This manual provides basic information about the applicable Seresco dehumidifier and its operation. Important information regarding installation, maintenance, and start up as well as additional and auxiliary systems and devices (outdoor condenser, communication interfaces, etc.) is normally provided with the dehumidifier and can also be obtained from the manufacturer (see Contact Us below).
  • Page 4: Reference And Additional Information

    Contact Us 1-833-DAS-POOL (327-7665) Seresco 1071 Ages Drive Schedule / Modify a Start-up: Ottawa, ON K1G 6L3 Startups@DehumidifiedAirServices.com Canada Inquire about Warranty: SerescoDehumidifiers.com Warranty@DehumidifiedAirServices.com Order Parts: Parts@DehumidifiedAirServices.com All Other Product Support: Support@DehumidifiedAirServices.com September 2020 Seresco NV Series OMM...
  • Page 5: Basic Information

    Basic Information Dehumidifier View and Options Seresco standard NV080 (BX cab) dehumidifier general views as well as some options are shown on Pic.C.1. • Pic. C.1 shows only one example of dehumidifier arrangement – refer to submittal documentation for specific details.
  • Page 6 Generally, 30” clearances to the equipment must be kept for the maintenance and service purposes. For the specific required clearances information, as well as dehumidifier overall dimensions, distances to pipe connections, duct connections etc., refer to the submittal documentation. September 2020 Seresco NV Series OMM...
  • Page 7: Dehumidifier External Systems Connection

    (see Pic. C.1). If dehumidifier is not equipped with it, power lines to be brought directly to the main electric panel. Also, provisions are made to bring control and communication connections through the dehumidifier roof at the service vestibule. Seresco NV Series OMM September 2020...
  • Page 8 Unless otherwise indicated, equipment that is equipped with heat recovery option contains a heat recovery circuit that is factory-charge with a water/glycol mixture; normally, rust inhibitor-infused food-grade propylene glycol is used. Glycol mixture concentration is normally shown on Main Label – refer as needed. September 2020 Seresco NV Series OMM...
  • Page 9: Layout And Components

    • Main Electric Panel contains Main Control Board (17), Operator Panel (18) and other electrical components. Disconnect (77), if one is installed, is usually located on the outer wall, opposite to Main Electric Panel. Seresco NV Series OMM September 2020...
  • Page 10 Pic. D.1 September 2020 Seresco NV Series OMM...
  • Page 11: Control System

    Main Electric Panel, apart from devices listed above (control board, OP, etc.) also contains Voltage Monitor; some optional control sensors and devices such as an air pressure differential sensor, current sensor(s). It may also be located in main electrical panel or in the dehumidifier in general. Seresco NV Series OMM September 2020...
  • Page 12: Sequence Of Operation

    Complete air changeover, triggered manually, is known as Purge Mode. • Note. Externally installed Exhaust Fan(s) and Outdoor Air damper(s) could be also controlled by the dehumidifier control system. This applies to both, Minimum and Purge/Additional, fans and dampers. September 2020 Seresco NV Series OMM...
  • Page 13: Heat Recovery Option

    Dehumidification or Air Conditioning mode(s), control system would simply increase exhaust fan(s) speed signal to direct more stale return air outside and bring in more outdoor (dry/cool) air in, thus reducing supply air humidity and/or temperature (as needed). Seresco NV Series OMM September 2020...
  • Page 14: Space Heating

    When premise air temperature rises above the set point, the dehumidifier control system issues a call for Space Cooling Mode and engages space cooler (Chilled water coil with valve) by sending space cooling signal, respective to space cooler control type - on/off or staged (multiple on/off valves). September 2020 Seresco NV Series OMM...
  • Page 15: Interface And Communication

    Logs button, then press the Current Alarms button; press the Clear button next to the respective alarm (the alarm that’s locked out the device or entire dehumidifier). For detailed information on TouchDisplay OP refer to DASV Touch Display Manual, provided with the dehumidifier (or contact factory to obtain a copy). Seresco NV Series OMM September 2020...
  • Page 16 For more details regarding alarms and alerts, refer to the Alarms Description information (available via Help feature in Touch Display OP); contact factory if needed. September 2020 Seresco NV Series OMM...
  • Page 17: Remote Communication

    If dehumidifier is equipped with LON communication option, it’s normally provided with pre-wired LonWorks Gateway for communication purposes. For more information about Web Monitor or BMS communication set up (connection, configuration, access, point cutsheets, etc.) – contact factory. Pic. F.2 Seresco NV Series OMM September 2020...
  • Page 18: Basic Maintenance

    Basic Maintenance Although Seresco equipment is built for minimal service downtime, periodic preventative maintenance is required to ensure maximum reliability, safety, and operating efficiency. WARNING! To ensure equipment longevity and proper and efficient operation, the dehumidifier and its auxiliary systems and devices must be maintained properly and regularly. It is recommended to create a facility- specific Routine Maintenance Program.
  • Page 19: Specific Components Maintenance

    Actual maintenance plan may vary from installation to installation, yet there are several key components from maintenance prospective. If needed, contact respective component manufacturer for additional maintenance information. Filters • Ensure air filters are clean. Dirty air filters will negatively affect dehumidifier performance and lifetime Seresco NV Series OMM September 2020...
  • Page 20 Thoroughly rinse both sides of the coil and the drain pan with, clean water • Straighten any coil fins that have been bent during the cleaning process • Confirm the drain line is clear • Replace all panels and parts and restore electrical power to the equipment September 2020 Seresco NV Series OMM...
  • Page 21: Pools - Equipment Warranty

    Email: Warranty@DehumidifiedAirServices.com Seresco warrants as set forth and for the time periods shown below that it will provide through either a DASV Service Technician or an authorized service organization specified and approved by DASV, a new or rebuilt part to replace a factory installed part which has failed because of defect in workmanship or material.
  • Page 22 Replacement Part Warranty If a replacement part provided by Seresco under this warranty fails due to a material defect prior to the end of the Two-Year Parts Warranty (or the end of the extended warranty period if applicable), whichever comes first, Seresco will provide a new or rebuilt part F.O.B.
  • Page 23 2. Optional Five-Year Dehumidifier Coil Warranty Subject to the terms above, Seresco will provide a replacement coil for up to 60 months from the date of the warranty activation. Extended coil warranties are for parts of the dehumidifier only and does not cover parts of dry cooler or OACC coils.

This manual is also suitable for:

Nv-080Nv-200Nv-320Nv-600

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