Computer program listings for the models derived and analyzed in Volume 1, PB-209 277, are presented. FORTRAN nomenclature, flow diagrams, input and output information, and other user instructions are also included. The manual has been prepared so that the user can link the programs together to form a component or system model, provide the needed input, run the program, and obtain and interpret the results. Each section deals with a particular model. All of the subroutines that are employed in constructing the model are listed. The total memory size requirements for all programs used in the total systems model is approximately 45K. The sections are: fluid property models; reciprocating expander model; turbine expander model; feedpump model; vapor generator model; condenser model; regenerator model; combustor model; transmission model; driver model; parametric design programs; and total system model. (Author)