Page 4 - Zone Control Product Guide

An Overview of
Aprilaire Zoned Comfort Control
What is a Zoned Comfort Control system?
Zoned Comfort Control is the practice of dividing a home or building into separate areas
or ‘zones’ to be independently heated or cooled based upon the demand in each zone.
Typically the term refers to a single piece of equipment controlled by two or more
thermostats. Some may use the term ‘zoned’ when referring to the installation of
multiple heating or cooling systems. However, the classic use of the term implies that a
single heating and cooling system is divided, by means of its ductwork, to serve multiple
zones each with their own individual thermostat control. Further, zone dampers are
located in the ductwork to direct the conditioned air to where it’s needed, when it’s
needed. A control panel coordinates the operation of the equipment with the distribution
of the conditioned air.
Why would a homeowner or light commercial user need
Zoned Comfort Control?
It is nearly impossible to maintain comfort throughout a home or building from one
thermostat. The thermostat only measures the temperature where it is located; therefore,
you may be very comfortable near the thermostat while areas further away or directly
above or below will not be comfortable. Virtually every structure has varying
requirements depending upon the room or area. For example, because heat rises, rooms
on the upper levels will always be warmer than on the first floor. Other examples that
produce the need for Zoned Comfort Control are:
Exposure
:
expansive south-facing glass will soak up the sun during the day and lose
more heat at night
Construction:
rooms built over an unconditioned space or built over a slab have
different heating/cooling requirements than areas over conditioned spaces
Occupancy:
the ability to set back the thermostat setting in unoccupied areas
saves energy
A P R I L A I R E Z ON E D COMF ORT CON T RO L P RODUC T GU I D E
4
Zoning delivers
better comfort control
for various types
of floor plans
Bonus room
Multiple levels
Finished basement
Atrium
Expansive
glass
area