Basic Hvac Control Wiring

All control systems operate in accordance with few basic principles but before we discuss these let s address.

Basic hvac control wiring. Disconnects and switchgear necessary for supplying power and control to hvac equipment. Designed for ac repair technicians. Thermostat wiring diagrams heat pumps are wired for hvac control far differently than air conditioning systems so make sure you know the difference and correctly identify the type of hvac system you have installed. Always turn the power off at the air handler and the condenser and make sure there is no voltage at the transformer before proceeding.

Hvac fundamentals be familiar with basic hvac terminology understand the fundamentals of the refrigeration cycle know the four major components of anhvac system and be able to explain each function. Goettl las vegas air conditioning inc. Types of wiring diagrams there are three basic types of wiring diagrams used in the hvac r industrytoday. The purpose of a relay is to control a or.

Also details how the parts work and how the electrical works. Notes some ac systems will have a blue wire with a pink stripe in place of the yellow or y wire. Basic electrical engineering for hvac engineers a heating ventilating and air conditioning hvac system is a simple system of heating and cooling exchangers using water or refrigerant direct expansion system as the medium. Additionally before you decide to change your thermostat make sure you have the correct tools especially a screwdriver and wire pliers.

Talks about basic electrical wiring and components in a straight cool split type air conditioner. Electrical wiring diagrams for air conditioning systems part one. There are three basic types of wiring diagrams used in the hvac r industry today which are. The first and most common is the ladder diagram so called because it looks like the symbols that are used to represent the components in the system have been placed on the rungs of a ladder.

Fundamentals of hvac controls the application of heating ventilating and air conditioning hvac controls starts with an understanding of the building and the use of the spaces to be conditioned and controlled. Pumps move the heated or cooled water to the exchangers. Thermostat wiring colors code hvac control always follow the thermostat manufacturer s instructions whenever changing the thermostat. Always refer to your thermostat or equipment installation guides to verify proper wiring.

Fans then move the warmed or cooled air.