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Seresco Dehumidifier Submittal PART 1 -GENERAL 1.1 SCOPE A. Packaged system for natatorium environment control including dehumidification, air heating and cooling. 1.2 QUALITY AND SAFETY ASSURANCE A. Unit shall be ETL listed. B. All refrigerant pipes shall be copper and coated for corrosion prevention after assembly. C. Units shall have all major electrical components out of the air stream, including the blower motor. D. Units shall be completely factory assembled, wired, piped, and tested. All controls shall be factory adjusted and preset to the design conditions. Test report shall be available on request. E. The system shall have a 24 month limited parts warranty from ship date. PART 2 - PRODUCTS 2.1 GENERAL A. The unit shall include compressor, evaporator (dehumidifying coil), condenser (air reheat coil), supply air blower, blower motor, motor starters and controls in one complete enclosure. The system shall be configured with an air conditioning option to reject up to 100% excess compressor heat during the air conditioning season to a remote outdoor air-cooled condenser. B. The unit shall be designed for indoor installation and be vertical configuration. The unit shall be designed for comer installation and require only two sides for service access. 2.2 PRINCIPLE OF OPERATION A. The unit shall be designed and sized to maintain the specified space temperature and relative humidity range. B. The unit operation shall be as follows: 1. The humid air from the natatorium passes through the dehumidifying coil and is cooled below its dew point, thereby condensing moisture. 2. The moisture removed at the evaporator coil shall be greater than or equal to the latent load of the space. 3. The heat captured by this process and the heat generated by the compressor power consumption is absorbed by a mechanical refrigeration system. C. The compressor heat shall be distributed based on the demands in the space. • Dehumidification (Zero Reheat) Mode: The space temperature is in dead band range. The compressor hot gas flows in parallel to the reheat and air conditioning condenser coils. The unit is dehumidifying with a supply air temperature z to the return air temperature • Dehumidification (Full Reheat) Mode: The space is calling for heat. 100% of the compressor hot gas condenses at the reheat coil. The supply air temperature is - 15 OF warmer than the return air. • Air Conditioning Mode: During air conditioning mode 100% of the compressor heat shall be rejected at the remote outdoor air cooled condenser. 1