Standard for Indoor Pool Dehumidifiers

Standard 910: Standard for Indoor Pool Dehumidifiers

For engineers and designers involved in creating comfortable and healthy indoor aquatic environments, understanding the performance and operational benchmarks of critical HVAC equipment is paramount. ARI Standard 910 provides an essential framework for specifying, testing, and rating indoor pool dehumidifiers, ensuring these systems effectively manage moisture and maintain optimal air quality in demanding environments.

What is Standard 910?

ARI Standard 910, developed by the Air-Conditioning and Refrigeration Institute (ARI), is an authoritative standard that establishes clear definitions, classifications, and performance requirements for factory-made dehumidifiers specifically designed for indoor swimming pool facilities. Its primary purpose is to provide a consistent and reliable method for manufacturers to test and rate their equipment, enabling engineers and specifiers to select units that meet rigorous performance criteria.

Scope & Purpose

This comprehensive standard governs the testing, rating, and labeling of electrically-driven, mechanical compression-type indoor pool dehumidifiers. It defines critical performance metrics such as moisture removal capacity and efficiency under specific operating conditions. While it covers the complete dehumidification system, it explicitly excludes the rating of individual components or assemblies designed for separate use. The standard aims to ensure that published ratings accurately reflect the equipment's performance in its intended application.

Who Must Comply?

• • Primary audience: HVAC Engineers, Product Designers, Test Technicians, Installation Technicians, and Building Managers responsible for commercial and recreational facilities.
• • Industries affected: HVAC Manufacturing, Swimming Pool Construction, Commercial Building Management, and Recreational Facilities.
• • Compliance nature: Voluntary, but widely adopted for product certification and specification purposes.
• • Enforcement: Compliance is typically verified through independent third-party testing and certification programs, ensuring adherence to the published standards.

Key Requirements Overview

• • The standard requires manufacturers to clearly define and classify different types of indoor pool dehumidifiers based on their configuration and capabilities, including options for pool water heating and economizers.
• • Professionals must ensure that dehumidifier performance is rated under standardized conditions to allow for accurate comparisons between different manufacturers' products.
• • Key provisions include detailed methodologies for testing moisture removal capacity (MRC) and moisture removal efficiency (MRE), accounting for factors like reheat coils and air circulation.
• • The standard mandates specific data that must be included on product nameplates and in published literature, ensuring transparency and facilitating proper selection and installation.
• • It outlines minimum requirements for external static pressure the equipment must overcome, crucial for system design and ductwork considerations.

Related Standards & References

ARI Standard 910 often works in conjunction with other industry standards. For instance, HVAC system design and psychrometric calculations may reference guidelines from ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers), particularly their terminology standards and handbooks, which are frequently cited within ARI documents. Furthermore, installation and safety practices may align with broader electrical and mechanical codes applicable to commercial buildings.