




J-Works

Version 2.2










Written 
by

Harry Simpson



















Copyright O 1995 MicroWorks, Inc.			All rights reserved.



Before You Start

From the Author
I have been doing load calculations for over 17 years.  I firmly believe 
that the greatest obstacle to comfort and energy savings is correctly 
sizing heating and cooling equipment on a case-by-case basis.  The 
Manual J method was developed by ACCA (Air Contractors of 
America) to provide an accurate method to obtain this information.  
This process is tedious but, compared to "guessing", well worth the 
effort.  J-Works was written to speed up the whole process of 
calculating loads for residential structures.  I have tried to design J-
Works to enhance my productivity, and it has.  J-Works has been 
approved for use by the Tennessee Valley Authority as an approved 
software program for use in their Heat Pump Program.  Please send 
any comments about what you would like to see in future versions 
and/or what you don't like about this version.  Send your registration 
and/or comments to:

MicroWorks Inc.
1907 Buck Daniels Road
Culleoka, TN 38451

Definition Of Shareware
Shareware distribution gives users a chance to try software before 
buying it. If you try a Shareware program and continue using it, you 
are expected to register. Individual programs differ on details -- some 
request registration while others require it, some specify a maximum 
trial period.  With registration, you get anything from the simple right 
to continue using the software to an updated program with printed 
manual.

Copyright laws apply to both Shareware and commercial software, 
and the copyright holder retains all rights, with a few specific 
exceptions as stated below.  Shareware authors are accomplished 
programmers, just like commercial authors, and the programs are of 
comparable quality. (In both cases, there are good programs and bad 
ones!) The main difference is in the method of distribution. The 
author specifically grants the right to copy and distribute the 
software, either to all and sundry or to a specific group. For example, 
some authors require written permission before a commercial disk 
vendor may copy their Shareware.

Shareware is a distribution method, not a type of software. You 
should find software that suits your needs and pocketbook, whether 
it's commercial or Shareware. The Shareware system makes fitting 
your needs easier, because you can try before you buy. And 
because the overhead is low, prices are low also. Shareware has the 
ultimate money-back guarantee -- if you don't use the product, you 
don't pay for it.

Disclaimer - Agreement
Users of J-Works 2.2 must accept this disclaimer of warranty:  J-
Works 2.2 is supplied as is.  The author disclaims all warranties, 
expressed or implied, including, without limitation, the warranties of 
merchantability and of fitness for any purpose. The author assumes 
no liability for damages, direct or consequential, which may result 
from the use of J-Works 2.2.

J-Works 2.2 is a "shareware program" and is provided at no charge 
to the user for evaluation.  Feel free to share it with your friends, but 
please do not give it away altered or as part of another system.  The 
essence of "user-supported" software is to provide personal 
computer users with quality software without high prices, and yet to 
provide incentive for programmers to continue to develop new 
products.  If you find this program useful and find that you are using 
J-Works 2.2 and continue to use J-Works 2.2 after a reasonable trial 
period, you must make a registration payment of $75.00 to 
MicroWorks, Inc..  The $75.00 registration fee will license one copy 
for use on any one computer at any one time.  To register, print the 
text file REGISTER.TXT, fill out and mail to MicroWorks, Inc..  You 
must treat this software just like a book.  An example is that this 
software may be used by any number of people and may be freely 
moved from one computer location to another, so long as there is no 
possibility of it being used at one location while it's being used at 
another. Just as a book cannot be read by two different persons at 
the same time.

Commercial users of J-Works 2.2 must register and pay for their 
copies of J-Works 2.2 within 30 days of first use or their license is 
withdrawn.  Site-License arrangements may be made by contacting 
MicroWorks, Inc..

Anyone distributing J-Works 2.2 for any kind of remuneration must 
first contact MicroWorks, Inc. at the address below for authorization. 
This authorization will be automatically granted to distributors 
recognized by the (ASP) as adhering to its guidelines for shareware 
distributors, and such distributors may begin offering J-Works 2.2 
immediately (However MicroWorks, Inc. must still be advised so that 
the distributor can be kept up-to-date with the latest version of J-
Works .).

You are encouraged to pass a copy of J-Works 2.2 along to your 
friends for evaluation.  Please encourage them to register their copy 
if they find that they can use it.  All registered users will receive a 
copy of the latest version of the J-Works system.

Support
MicroWorks, Inc. provides 90 days free support for all software 
products.  This period begins from the date of registration.  
Registered users receive the latest version of the program and a 
printed manual.  Registered users will also receive special rates on 
the upcoming Windows version of J-Works.  

MicroWorks, Inc. is a member of the Association of Shareware 
Professionals  (ASP).  ASP wants to make sure that the shareware 
principle works for you.  If you are unable to resolve a shareware-
related problem with an ASP member by contacting the member 
directly,  ASP may be able to help.  The ASP Ombudsman can help 
you resolve a dispute or problem with an ASP member,  but does not 
provide technical support for members' products.  Please write to the 
ASP Ombudsman at 545 Grover Road, Muskegon, MI 49442-9427 
USA,  FAX 616-788-2765 or send a CompuServe message via 
CompuServe Mail to ASP Ombudsman 70007,3536.

Files Listing
The following files are included:
  JWORKS.EXE	The executable program
  JWORKS.WKB	The "blank" template data file
  JW22ICON.ICO	Windows 3.x icon for J-Works 2.2.
  JWORKS22.DOC	Program documentation (Word 6)
  JWORKS22.WRI	Program documentation (Windows Write)
  JWORKS22.TXT	Program documentation (text file)
  REGISTER.TXT	Program registration form and instructions

Backup Disk
Make a back-up disk using the DOS diskcopy command.  It is 
recommended that J-Works 2.2 be installed onto a hard disk for 
speed and convenience.  Make a directory on your hard disk (ex: MD 
JWORKS).  Then change to that directory using the CD \JWORKS 
command.  Then type COPY A:\*.* to copy all program files to the 
hard drive.

Template
You may also want to modify JWORKS.WKB file.  In this file you 
would enter your name, company, address, and default values in the 
variable cells.  You would then save the file as BLANK.WKB.  Then 
each time you start the program you could go to FILE/GET command 
and retrieve the BLANK.WKB file for use to shorten your setup time.

Manual J
J-Works 2.2 is intended to be used with the ACCA Manual J booklet.  
For assistance in obtaining this publication,  contact:

Air Conditioning Contractors of America
1513 16th Street, NW
Washington, DC 20036
(202) 483-9370




Main Menu and General Guidelines

J-Works 2.2 contains a top pull-down menu bar containing 
Worksheet, Range, File, Print, System, Video, and Quit options. This 
menu is accessed using the / key or by clicking on the selection with 
the left mouse button.  Use the Esc key to back out of each menu 
level.  


Worksheet contains global defaults for Printer, Directory, and Other.

Range contains the DeOvr option.  DeOvr is the deoveride 
procedure which returns and restores a previous cell's calculated 
value.  To use this option, place the cursor over the overridden cell 
(Note: All overridden cells are denoted by yellow numbers.) and then 
access the Range and DeOver options.  Follow the on screen 
prompts.

File allows you to Get and Save data in the J-Works program.  
Choose either option.  A pop-up menu will appear with .WKB files 
(data files) to choose from.  You may highlight one of the files or type 
in a different drive selection.  

Print is actually not needed but included.  All printing of worksheet 
data is handled through the print procedures in the macro menu. 

System allows you to temporarily go to the DOS prompt.  Typing 
EXIT will return you to J-Works.

Video gives you control over screen colors and display modes. 
(Note: Any change in Size will affect the formatting of the macro 
menu procedures.  Screen display should be returned to normal size 
before executing the macro menu procedures.)  After arriving at a 
desirable screen display, you may save the .VID file for future use.  A 
.VID file keeps the display configuration information.

Quit allows you to exit the program.  Save to disk the .WKB file 
before exiting J-Works.  Type a new name to avoid overwriting any 
templates.


Macro Menu

A macro menu controls the screen view and printing process.  Below 
is a description of each selection in the macro menu.  Hold down the 
Alt key and press the F3 function key.

Alt + F3 key combination evokes the pop up macro menu containing 
seven choices:   

	CFM_CALC	      DATA_IN		     	FORMTOP
 	PRINTJ 	   	      PRINTSHORT            	TITLE		 
	PRINTCFM 	

TITLE would be the first choice from the menu in most cases.  
Highlight the choice and press the ENTER key.  Enter the customer 
name and address information.  (Note: Use a ' or " before entering a 
numeric label.)  Enter your name and address information if 
necessary.  Data entry locations are usually denoted by >< brackets 
around the data entry fields.

PgDn to the Design Conditions screen to see if default figures are 
appropriate for your application.

PgDn twice and check the Winter and Summer AC/HR (air changes 
per hour) entries to see if they need to be modified.

FORMTOP  would be the next step.  This brings you to the top left 
corner of the worksheet area.  Enter the ceiling height if different than 
eight feet.  This height will be carried to all the rooms as the default.  
Next, go down the Construction No. blocks modifying them and the 
resulting HTMs as needed.  Enter the duct gain/loss percentages in 
decimal form (ex: 10% would be 0.10) if different from the defaults.

Now you are ready to enter the room-by-room data.  

DATA_IN sets up a moving window on the right side of your screen.  
The stationary left window lets you maintain your orientation in the 
worksheet.  DATA_IN sets the cursor in position to start data entry 
on the first room. (Note: If doing a whole house load only, use the 
first room only to enter in your data.)

Enter the name of the room, running exposed feet, and room 
dimensions.  Most rooms are not going to be perfect squares for load 
calculation purposes.  Figure the square footage and enter a tenth in 
decimal form. (ex. 245 sq. ft. would be 24.5  x  10  =  245.)  If 
needed, enter ceiling height other than 8 feet.  

Continue to enter data in cells for different areas of structure.  Winter 
glass area is calculated by the program for you, so just enter the 
Summer glass data first.  It is recommended that glass in doors be 
entered as window area and subtracted from door sq. ft.  

Ceiling and floor sq. ft. are calculated for you.  In cases where the 
house is two stories or more, you will have to override the default and 
enter in the appropriate sq.ft. for the room. (ex: first floor usually 
would have no attic sq. ft.)

Number of people and/or appliances is set up such that entering a 1 
or decimal fraction thereof will assume that you are referencing 
appliances.  Enter people as 2 or more for areas of use. (ex: Entering 
.75 would add 900 Btuh to the room.  Entering .25 in another room 
would add 300 Btuh, for your standard 1200 Btuh appliance load for 
the house.)

This should complete your first room data entry.  PgUp until you are 
at the top of the worksheet and use the ----> key to move the right 
window to the next room and enter data for that room and so on.  

CFM_CALC is a room by room air distribution calculator.  When you 
have completed all data entry for all rooms, press Alt + F3 to get 
back to the macro menu.  Highlight CFM and press ENTER.

Enter the cfm/ton which you would like to design with.  Then enter 
the ARI nominal Btuh total capacity which the structure will require 
based on the Sensible and Latent figures in this section.
Total cfm is then calculated and possible cfm and number of 
registers is calculated for each room.  Note that the cfm can be 
overridden so that small allowances may be made for rooms.

The return needed section calculates the gross return filter size.  This 
is calculated by taking half of the system cfm and dividing that by .8 .  
The possible filter sizes are consisted of the first number which is a 
standard size and a second number which is merely the gross 
divided by this first number.  Choose a  common filter size as large or 
larger and enter the result as a label in the recommended filter entry 
area. (Note: Use the ' or " first to denote a label entry.)

PRINTSHORT is a procedure which prints the title sheet, the air 
infiltration and summary sheet, and the first room data entry sheet.  
This would be all you would need to print out for the whole house 
load.    

PRINTJ is the printout of all worksheets.  This will print out all 
fourteen room worksheets along with the title and summary sheets.  

PRINTCFM prints out the cfm calculation sheet, useful for reference 
in designing your duct layout and sizing.

 



