HVACR Time Control Basics

The video tutorial covers the evolution of time control systems from mechanical to electronic timers, highlighting their use in managing heating systems. It explains how electronic timers offer more functions and flexibility, such as seven-day schedules, which are beneficial for places like offices. The tutorial also introduces advanced systems using optimizers and programmable logic controllers to efficiently manage heating based on occupancy and temperature conditions. The session concludes with a summary of the key points discussed.

What is the primary function of a cam in a simple time control system?

• To regulate the speed of the timer

• To display the current time

• To push contacts together and complete a circuit

• To measure the temperature

Why are electronic controllers considered more advantageous than mechanical timers?

• They are larger and more complex

• They have fewer functions

• They require more maintenance

• They are compact and easier to use

How does a seven-day schedule benefit small offices?

• It allows for continuous heating throughout the week

• It enables heating to be turned off on weekends

• It reduces the need for manual adjustments

• It increases the heating capacity

What role does an optimizer play in advanced heating systems?

• It controls the lighting system

• It adjusts the building's ventilation

• It checks the clock for scheduled heating times

• It measures the humidity levels

How does the system decide when to start heating on a cold day?

• By using a fixed start time regardless of conditions

• By measuring the humidity inside the building

• By checking the outdoor temperature and calculating the required heating time

• By consulting the building's maintenance schedule