HVAC and BAS Fundamentals

1
HVAC and BAS Fundamentals

• Part 2

2
Overview

• Course is based off Honeywell Grey Manual
  available here.
• Course will last roughly 32 weeks covering all 16
  chapters.
• Questions will follow the presentation.

3
Chapter 1 Part 2 Agenda

• Control System Characteristics
• Controlled Variables
• Control Loops
• Control Methods
• Analog/Digital
• Control Modes
• Two-Position
• Step (or Sequenced)
• Floating
• PI/PID

4
Controlled Variables
5
Control Loops
6
Two Position
7
Floating and Step
8
P I (and sometimes D)
9
Questions

• If my sensor is 1 foot from my control valve what
  kind of control should I use?
• If I am 5 degrees off setpoint and I have been
  for 10 minutes what is my output?(assume stup of
  50, I of 5/min, I max 20, P1deg/1.)