Manual J®
ACCA’s Get Manual JSD® 8th Edition is the nationally recognized ANSI standard for performing HVAC equipment sizing load calculations across a variety of residential properties. Whether for single-family homes, small multi-unit buildings, or manufactured homes, getting a precise load calculation with Manual JSD ensures compliance with national building codes.
This standard explains how to use the CLF/CLTD method to calculate precise loads for residential premises, assuring proper HVAC system design. Manual J 8th Edition applies to any dwelling unit with its own heating, cooling, and ventilation system, as well as its own exhaust air system(s). This includes:
- Single-family detached homes, duplexes, and triplexes
- Single-family attached homes (such as row houses or townhouses)
- Multi-family attached units (such as condominiums and apartment units)
- Energy-efficient homes
To know more about Manual J, Visit https://www.acca.org/standards/technical-manuals/manual-j
Manual S®
ACCA’s Get Manual JSD® is a comprehensive guide for choosing and sizing residential heating, cooling, dehumidification, and humidification systems. It establishes necessary size restrictions to guarantee that HVAC systems are appropriately sized and installed.
Key updates in the latest revision of Manual S include:
- Expanded Definitions: Provides a clearer understanding of standard terms.
- Support for Code Compliance: Assists in demonstrating adherence to the International Residential Code and Uniform Mechanical Code, including minimum documentation requirements.
- Heat Pump Sizing Tolerances: Expanded sizing tolerances for variable capacity heat pumps, supporting electrification efforts and improving heating sizing accuracy.
- Expanded Dehumidification Guidance: Offers more detailed information on dehumidifiers to enhance indoor comfort.
This updated edition of Manual S reflects years of collaboration with contractors, users, OEMs, utilities, and other industry experts to enhance equipment selection and sizing practices.
To know more about Manual S, Visit https://www.acca.org/standards/technical-manuals/manual-s
Manual D®
The third edition of the ANSI-recognized Get Manual JSD®: Residential Duct Systems aims to improve the duct system design process, allowing you to save time and get better outcomes. This revised edition provides increased information on Variable Air Volume (VAV) systems, wide examples, and insights into the effects of excessive length and compression in flexible ducts. It also offers new equivalent length values for flexible duct junction boxes and highlights standard criteria in accompanying informational materials.
Manual D, published by the Air Conditioning Contractors of America (ACCA), provides a complete, ANSI-recognized duct sizing guide, establishing a uniform set of concepts and computations that may be applied to any type of duct material.
Key updates in the newly released Manual D include:
- Updated and expanded VAV guidance, featuring detailed examples
- Impacts of excess length, sag, and compression in flexible ducts
- New equivalent length values for flex duct junction boxes
Manual D is organized into three normative sections, thirteen informative sections, and seventeen appendices, all designed to assist with the procedures and regulations related to residential duct systems.
To know more about Manual D, Visit https://www.acca.org/standards/technical-manuals/manual-d