Bryant ZONE PERFECT PLUS ZONEBB2KIT Zoning Design Manual

TABLE OF CONTENTS

INTRODUCTION ........................................................................1
OVERVIEW OF ZONING .........................................................1
What is Zoning? .........................................................................1
Is a Zoning System Right for This Job? ...................................2
ZONE PERFECT PLUS FEATURES....................................2-3
Humidification Control...............................................................2
Dehumidification Control...........................................................2
Damper Control Scheme ............................................................2
OUT Zones .................................................................................3
Bryant Access Home Zoning Software .....................................3
Eight-Zone Capacity...................................................................3
Ease of Installation and Installer Test .......................................3
ZONE PERFECT PLUS COMPONENTS ............................3-4
User Interface..............................................................................3
Equipment Controller .................................................................4
Zone Sensors...............................................................................4
Remote Sensors.......................................................................4
Smart Sensors..........................................................................4
Equipment Sensors .....................................................................4
Zone Dampers.............................................................................4
DESIGNING A ZONE PERFECT PLUS
INSTALLATION ..................................................................4-10
Assigning Zones .........................................................................5
Task 1-Assess the homeowner's goals
for comfort and energy savings...............................5
Task 2-Conduct a site survey and make
preliminary zone assignments..................................5
Conducting a Site Survey....................................................5
Making Preliminary Zone Assignments .............................5
Sizing the Equipment .................................................................6
Task 3-Calculate block load estimates
and zone load estimates...........................................6
Task 4-Size heating and cooling equipment .......................6
Task 5-Choose register and return locations.......................7
Determining the Number of Returns ..................................7
Selecting Return Locations .................................................7
Selecting Register Locations...............................................7
Meeting Zoning Challenges in Two Story Homes ............7
Recording Return and Register Locations..........................7
Task 6-Determine Bypass Needs.........................................7
Task 7-Lay out supply ducts and locate dampers...............7
Task 8-Determine appropriate damper and duct sizes........8
Determining Duct Size Based on Damper Size .................8
Why Oversized Ducts are not a Problem
with Zone Perfect Plus........................................................8
Task 9-Choose locations for zone sensors ..........................9
Considerations When Retrofitting an Installation .....................9
Installing the System ..................................................................9
COMPONENTS REQUIRED FOR
SPECIFIC APPLICATIONS ..................................................10
Thermostatic Expansion Valve ................................................10
Leaving Air Temperature Sensor.............................................10
Heat Pump Temperature Sensor ..............................................10
Outdoor Temperature Sensor ...................................................10
zoning design guide
ZONE PERFECT PLUS
Page
-1-
Cancels: New
SPECIAL APPLICATIONS USING
ZONE PERFECT PLUS ....................................................10-12
Understanding the Requirements of Setback with Zoning .....10
Using Multi-Stage Equipment with Zoning .......................10-11
Using Variable-Speed Blowers with Zoning...........................11
Bypassing with Zoning .......................................................11-12
Bypassing to an Unconditioned Space.................................11
Bypassing to a Conditioned Space.......................................11
Bypassing Directly to the Air Return ..................................11
Bypassing Using OUT Zones...............................................12
GLOSSARY...........................................................................12-13
APPENDIX-WORKSHEETS............................................13-17
Zoning Design Checklist ..........................................................14
Homeowner Survey.............................................................15-16
Floor Plan Worksheet...............................................................17

INTRODUCTION

This guide provides information to help you design a Zone Perfect
Plus installation. It discusses general topics related to designing a
residential zoning control system, as well as specific information
about Zone Perfect Plus.
Use this guide to help you design a zoning system that will:
• Meet or exceed the homeowner's expectations regarding the
system's capabilities. This goal will result in improved cus-
tomer perception of your company, as well as repeat business
and referrals.
• Protect the heating and cooling equipment used in the system.
This goal will result in improved system reliability, longer life
of heating and cooling equipment, and reduced warranty costs.
To design a zoning system to perform well under all conditions, it
is essential to view the system as a whole at the design stage, rather
than to begin selecting and installing individual components
without a careful assessment of how they will work together. Be
sure to perform all of the tasks described in this guide before you
begin to install components.
This guide assumes that you have experience designing residential
heating and air conditioning systems. The information in this guide
is intended to supplement that experience. This guide does not
address commercial applications of Zone Perfect Plus.

OVERVIEW OF ZONING

Residential zoning systems bring the possibility of total comfort
control to the homeowner by providing exactly the right amount of
heating or cooling to each living space. Comfort can be described
as the absence of sensation. Ideally, a zoning system should keep
the occupants of the home comfortable without them being aware
of the system.
A. What is Zoning?
A zone is a conditioned space (one room or a group of rooms) that
is separately controlled by its own sensor. There are as many zones
in a home as there are sensors.
A zoning system is a heating and cooling control system that
maintains each zone of a home at a predetermined temperature and
that maintains the home at a predetermined humidity. In addition
to meeting these basic goals, Zone Perfect Plus is designed to:
ZONEBB2KIT
ZONEBB4KIT
ZONEBB8KIT
AP17-2
4-98