ACCA Design Series

Training ACCA Design Series


ACCA Design Series

We have two course sets that focus on the complete range of ACCA Manuals.  Both incorporate the Wrightsoft software to calculate loads and equipment selection.

  • Course Set 1 Residential:  Focuses on Residential Design incorporating Manual J, S, D, & T.
  • Course Set 2 Non-Residential: Focuses on Non-Residential Design (Small Commercial) Manual N, CS and D/Q





ACCA J Course —Residential Part 1

Training Objectives

Heating and Cooling equipment is most often selected and installed based on rule of thumb guesstimations. The objective of this training is to provide a solid foundation for the science behind the Manual J load calculation procedure. Basic heat transfer principles are reviewed. The effect that changing construction practices, location and building orientation have on building load and equipment selection is demonstrated and a simulated computer calculation is produced.

Equipment is sized using ACCA Manual S procedures adjusted for California climate and climate zones. Attendees are shown how to use the Manufacture Product Data sheets to determine equipment size under real installed and operational conditions.

Class Approach

The Residential ACCA series is designed to be a three day seminar. Manual J and S is Part 1 and is an eight hour training session. For Manual J and S there are no prerequisites to attendance.

The attendees need to bring a laptop with a Wrightsoft Demo program pre-loaded. Wollin Group Inc. provides a training manual that the attendee can take with them. For Utility sponsored training an ACCA Manual S book is also provided.


ACCA Manual S & D – Part 2

Training Objectives

Once a Load Calculation is prepared for a home the next step is to design a duct system that distributes air to meet the room by room heating and cooling loads.

Duct systems use various materials from spiral pipe and KD to flex and duct board. Each material has a different roughness factor and each fitting used a different equivalent length. Terms such as friction rate, equivalent (effective) length, external static pressure, available static pressure, pressure drop are discussed and explained. Other design issues include return air sizing and filter selection.

The Principles of Air flow and Design are reviewed and various hands on exercises are included in the training session. Calculating friction rates, determining duct diameters and layout options are part of the session.

Class Approach

The Residential ACCA series is designed to be a three day seminar. Manual D Principles is Part 2 and is an eight hour training session. Manual J and S are a prerequisite to Manual D Principles to attendance.

Wollin Group Inc. provides a training manual that the attendee can take with them. For Utility sponsored training an ACCA Manual D book, an ACCA Ductulator and various forms are provided.







ACCA Manual D – Part 3

Training Objectives

ACCA Part 4 Manual D WrightsoftThe Manual D Principles are expanded upon in day 2 of the Manual D portion of the training. The training home used during Day one of the ACCA series is used again and the entire process of Load Calculations, Equipment Sizing and now incorporating the principles from Manual D a duct design is produced within the software.

The correct set-up of the Wrightsoft simulation software is gone through step by step and adjustment are made to reflect the users defaults and design preferences. Various scenarios are reviewed and discussed.

Register selection and placement are gone through in detail including the principles of Throw and Spread.

Class Approach

The Residential ACCA series is designed to be a three day seminar. Manual D Wrightsoft is Part 3 and is an eight hour training session. Manual J, S and D Principles are a prerequisite to Manual D Wrightsoft for attendance.

Wollin Group Inc. provides a training manual that the attendee can take with them.