Manual J Load Calculations
WrightSoft Residential HVAC Software
What · Provides ACCA Certified Manual J Residential Heating and Cooling Load Calculation & Manual D Duct Design services for single-family, multi-family, apartments, condominiums, townhouses and modular homes. · Utilizes WrightSoft Universal 7.0 HVAC Manual J Residential Load Calculation and Manual D Duct Design Software. WrightSoft Universal provides the most accurate load analysis and equipment sizing with Right-J® for ACCA Manual J8 load calculations. · Performs a ROOM x ROOM Manual J residential load analysis by using up-to-date recognized industry standard procedures based on ACCA Manual J 7th and/or 8th Edition and HRAI F280 (Canada). The Manual J heating and cooling load calculation · HVAC system selection (Manual S) · HVAC duct and pipe layout and sizing (Manual D) · Eliminates under-sizing of heating & cooling equipment · Eliminates over-sizing of heating & cooling equipment · Eliminate comfort problems (Great Room too hot in summer and/or master suite too cold in winter – “Goldilocks home”) · Humidity control during the cooling season Your Manual J residential load calculation MUST be accurate. Under Sizing HVAC Equipment Over Sizing HVAC Equipment
affects every aspect of the system design process:
Overview. ACCA-Certified Manual J load calculation starts with Right-J®. Wrightsoft and ACCA have been partners since 1986. As the original ACCA Technical Partner, Wrightsoft’s 20 year relationship is longer than all other software partners combined. Right-J is currently in use by tens of thousands of contractors and HVAC designers, providing them with the industry leading load calculation tools.
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- Calculates ACCA certified Manual J 7th and 8th edition load calculations, including addenda A,B,C and D.
- All Manual J tables are included, including mobile homes with improved sizing loads for:
- Single-family detached homes
- Small multi-unit structures, condominiums, and townhouses
- Manufactured homes
- Links with ARI/GAMA electronic equipment directory built into the program.
- Manual J loads can be broken down by whole house or room-by-room with BTUs and CFMs and viewed as pie charts with the Load Meter.
- Multi-zone capability with single central VAV or multi-equipment, including the calculation of peak loads.
- Fast links to ResCheck, Rem/Rate and Florida Engage for easy code compliance.
- ACCA certified reports and printouts for submissions
- Expert assistant reviews data for accuracy and compliance
- Thousands of material types for walls, windows, doors, roof types, and window shading.
- Overall calculation improvements including:
- Improved duct loss and gain models
- Heat loss and gain for log walls, structural foam panels, aerated concrete block, insulated form concrete panels, brick walls, concrete walls, wood foundation walls, below grade walls, and many other types of walls and insulation
- Heat gain sensitivity to roofing material, roof color and the use of radiant barriers
- Cooling loads for glass rated by the National Fenestration Rating Council (NFRC)
- Improved methods for estimating the effect of internal and external shading devices, including insect screens
- Sensitivity to skylight glazing material, curb construction and light shaft construction
- Sensitivity to latitude and altitude
