The Heating, Ventilation and Air Conditioning Control and Fault Simulator, Model 814b, enables the study and operation of various controls and control theory as applied to heating, ventilation and air conditioning systems. It enables the user to simulate different conditions to show how the various components work in a control scheme.
Designed for single phase operation the demonstration case is divided into two main boards:
a) Mimic Diagram with room temperature potentiometers
b) Control board with programmable controllers and Modules.
Indication lamps have been fitted to show pump change over, fan trip filter blocked, etc. Bar graphs on the dampers and control valves light up to indicate whether open or closed - i.e. what position they are in.