2011foster understanding zoning
TRANSCRIPT
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March 23-25, 2011 Landsdowne, VA
Presented by:
HVAC ZONE
DAMPERS&CONTROLS
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Who is ?New trade name ofPreviously marketed zoning under the trade name of 1964-
99:
First company to market and sell HVAC Zoning.Sold more zoning system than the others.
Always Leading Edge ProductsMaking Zoning AffordableSimplest to Install and Wire
Corporation.
Trol-A-Temp is a registered trademark of Honeywell International. There is no affiliation between Honeywell and Trolex Corporation and Honeywell.
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Has completed the required training to sell, install, checkout, and troubleshoot Zone Damper Control Systems. And areherby awarded this certificate with a honorary degree in
ZONEOLOGYA concentrated program of study on the operation of zone dampers and control systems of forced air heating andcooling systems.This training program is recognized by NATE and is eligible for Re-Certification CEU credits. Please sign your name onthe attendance sheet with your NATE Number and we will forward this to NATE.
Be it known to all the world that
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Zoning is Not New
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OEMs Have Zoning
Promotional Literature from the 1980s
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Man
ualD
ResidentialAirDistribu
tionSystems
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Manual JLoad Calculations
Manual DDuct Design
Manual ZrZone ControlComing Late 2011?
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One ThermostatControls Central
HVAC System
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Downstairs
UpstairsTwo Ton
Two Ton
Some state building codes require zoning on two level homes. North Carolina is on
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Downstairs
UpstairsMaster BR
UpstairsKids/Guest
ZoneDampers
A 3 Zone System
will still cost less
than two separate
units!
3.5 Ton
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Two ZonesFirst Floor and Second Floor
Zone One Zone Two
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Three Zones
Zone One
Zone Two
Zone Three
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Four Zones
Zone One
Zone Two
Zone Three
Zone Four
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Zoning Products
ZoneDampers
Zone
ControlPanels
Parallel Blade DampersSpring Return Retro-Round andIn-Line Round Dampers
Single Stage2 and 3 Zone
Multi-Function4 Zone Expandable
2 Zone AdderSingle Stage and Heat Pump2 and 3 Zone
By-Pass Dampers
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Obstacles?Zone Thermostats
Control Panel
Whats
Preventing
Installers fromputting Zoning
on Every HVACSystem?
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Why Not Zoning?Consumers Want It!
Surveys have shown over 60% of Homeownerswould pay $1,200 for zoning when offered.
According to an NAHB survey, when askedwhat they would be willing to pay if their energycosts could be reduced roughly $1,000 a year, 51percent checked $5,000 to $10,999 and another16 percent said $11,000 or more. Thirty-two
percent said they were willing to pay less than$5,000.
Contractors Do Not Offer It.
Hydronic Heating Systems
Practically every boiler is zone withvalves or circulators.
Commercial Offices are Zoned
In Commercial its called Variable AirVolume (VAV).
Zone Thermostats
Control Panel
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Why Not Zon ing?
All Hydronic andHot WaterSystems
are Zoned
Circulating Pump
Zone Valve
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http://www.bellgossett.com/homeowners/ProductPages/Parts-Comfort-Trol-Zone-Control-Valve.asphttp://www.bellgossett.com/homeowners/ProductPages/Parts-Comfort-Trol-Zone-Control-Valve.asp -
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Why Not Zon ing?
Its even in many New CarsIndividual Driver and Passenger Temperature Control
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If you have one of these for each room?Why not one of these?
Why Not Zon ing?
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Zoning $aves Energy
Utilities and others promote this!
Public Service Electric and Gas, a New Jersey Utility
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Zoning $aves Energy
11% Electric Input Savings
33% Fewer Air Conditioner Cycles
1990 Energy Study done on actual home in Minneapolis, MN
NO ComfortNO Savings
SavingsNO Comfort
ComfortNO Savings
ComfortAND Savings
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25% Energy Savingswith
PROPER
Zone Controlusing setback
or
20% Extra Cost ofComfortAll stats at same temperature
Zoning $aves Energy
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More Information www.zonefirst.com/energysavings
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Opportunities?
Residential New Construction100%Can be designed from the start.
Residential Retrofit50%
Access to ductwork. May need modifications.
Hydronic w/Air Conditioning Add-onCreate an equal number of zones for bothheating and cooling.
Same Thermostat for Heat and Cool (RH/RC)
Commercial90%Overhead ducts in False Ceilings.
Retrofit for change from Single Tenant to Multi-Tenant
Zone Thermostats
Control Panel
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Zoning System Design
Every forced airsystem can be zoned!
Zoning can make a good systemgreat!
It can also make a poor systemworse!
Zoning is Not a cure all for a poorlyMarch 23-25, 2011Landsdowne, VA
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Zoning System Design
Every good forced air system can be zoned!
ITS JUST A MATTER OF COST.
HOW MUCH WILL IT COST = HOW MUCH DO YOU WANT TO SPEND!
Is it practical? Retrofit?Yes! Overhead A/c systems.
New constructionYES!
It comes down to imagination and creativity.
You can for different reason
OccupancyLiving, sleeping, recreation
ExposuresNorth, south, east, westLevelseach floor be a zone
Loadskitchen, solar, fireplaces
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Airflow characteristics
Garden Hose
As the water flows out of the hose there is:
A certain volume of water, Gallons Per Minute (GPM) = Air CFM
Water flows out at a certain velocity = Feet Per Minute FPM = Same as air.
Water has a pressure behind it in the system to make it come out = Static Pressure, usually measured
in Pounds per Square Inch = PSI = Air S.P.
A ir is a fluid just l ike water
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Airflow characteristics
Garden Hose
Cover opening with thumb
As your thumb begins to close up the hose opening the following occurs:
Thumb feels increased pressure = increased static pressure
Water from hose shoots farther = increased velocity
Same volume of water flows.up until the point where your thumb can
apply more pressure that that of the water coming from the hose. Then
youre reducing the volume of water.
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Duct Design for Zoning
The main principle of duct design forforced air zone control is to maintain a
constant volume of air (CFM) through
the HVAC unit, when only one zone is
open and maintain adequate airflow
when all zones are open.Be carefu l no t to oversize the duct sys tem.
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Duct Design for Zoning
Over-blow/SizingSystem that are 2 or 3 Zones and similar in size
Using Single Speed Blowers
By-PassUse a separate controlled duct to relieve excess air
Distributed Relief
Using Minimum Position or other method toreleive air into satisfied zones.
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Three Methods Stated in NEW ACCA Manual Zr
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Duct DesignNew Installations
Example
2-1/2 Ton
(1000 CFM)
Blower
600 - 700 CFM (60-70%)
600 - 700 CFM (60-70%)
600 - 700 CFM(60-70%)
Over Size Each Trunk
Duct To Handle 2/3 of
Total System CFM
Remember this is a Rule of Thumb.
Should be used as a minimum.
Two Zones would be more like 700 CFM/zone.
Three Zones would be more like 600 CFM/zone.
Have an adequate numbers of take-offs for each zone.
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Duct Design
2-1/2 Ton(1000 CFM)
Blower
600 - 700 cfm (60-70%)
600 - 700 cfm (60-70%)
600 - 700 cfm(60-70%)
Five 6 Round Branch Ducts on Each Trunk
Duct
By-Pass is typically not
required.
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Air moves into the zone duct at a higher velocity and pressure,but not enough to over come the static rating of the blower.
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Duct DesignFor Rectangular
System CFM Zone Duct Outlets
800 CFM 12 x 8 5-6 Rounds
1,000 CFM 14 x 8 5-6 Rounds1,200 CFM 16 x 8 6-6 Rounds
1,400 CFM 18 x 8 5-7 Rounds
1,600 CFM 20 x 8 5-7 Rounds2,000 CFM 22 x 8 5-8 Rounds
*Learn this chart youll know whether or not a by-pass is needed or not.
Minimum Zone Duct Sizes
and Outlets Where By-Pass
is NOT REQUIRED
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Duct DesignFor Round Ducts
System CFM Zone Duct Outlets
800 CFM 12 Round 5-6 Rounds
1,000 CFM 12 Round 5-6 Rounds1,200 CFM 12 Round 6-6 Rounds
1,400 CFM 14 Round 5-7 Rounds
1,600 CFM 14 Round 5-7 Rounds2,000 CFM 16 Round 5-8 Rounds
Minimum Zone Duct Sizes
and Outlets Where By-Pass
is NOT REQUIRED
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By-Pass Location
2-1/2 Ton
(1000 CFM)
Blower
600 CFM
300 CFM180 CFM
120
CFM
Return Air Duct
By-PassDuct
Static Pressure
Regulating Damper
Typical By-Pass Application
Lessens the need for Capacity Controls.
Always try to run by-pass into return asfar away from blower as possible.
Air By-Passedfurther away fromblower has moretime to mix with RAand be temperedby RA from otherareas.
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Typical Duct Layouts
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Typical Duct Layouts
HVAC
Unit
Parallel Supply & Return Trunks
Supply
Return
Zone Each Branch Duct
SPRD
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Dump Zone
2-1/2 Ton
(1000 CFM)
BlowerReturn Air Duct
HallwayEntrance Foyer
Common Area with suppliesfrom Dump duct on one end,
return on other end of area.
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z ng e y-Pass
Total CFMSmallest Zone CFM= By-PassCFM1,200 CFM (3Tons) - 300 CFM = 900 CFM for By-Pass
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B i B P D
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Barometric By-Pass Damper
CFM Capacity SPRD Size
1,000 CFM 12 x 81,200 CFM 12 x 10
1,400 CFM 12 x 12
1,600 CFM 20 x 8
1,800 CFM 20 X 10
2,000 CFM 20 X 12
CFM Capacity SPRD Size
300 CFM 7
400 CFM 8
600 CFM 9
750 CFM 10
1,200 CFM 121,800 CFM 14
2,400 CFM 16
3,000 CFM 18
4,000 CFM 20
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The counter balance weight moves up and
down the arm.The arm can also be offset to the blade to
add more or less weight.
All Zones Open the By-Pass should be
closed. As the larger zones Close, the by-
pass opens to relieve the excess air.
To adjust, close all zone dampers, except
for the smallest zone. Check the static and
noise level and adjust by-pass damper
open to maintain that level,
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Modulating By-Pass
Operates Independently of the Zone Dampers
Modulates based on static pressure in ductsystem.
Opens as duct pressure increases above 0.3
W.C.
Closes as duct pressure drops below 0.2 W.C.
Stops between 0.2 and 0.3 W.C.
By-Pass Control needs a dead band.
Do Not want by-pass to HUNT seeking balance.
Insure a by-pass sensor matches the systemstatic Higher for Commercial Applications thenResidential
Static Pressure Switch
Modulating
ZD Damper
ModulatingRD Damper
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Zoning and Variable Speed
Number of Zone Dampers Closed
StaticPressureandFanSpeed
0 1 2 3
0.4
0.3
0.2
0.1
All Dampers
OPEN
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Zoning and Variable Speed
Number of Zone Dampers Closed
StaticPressureandFanSpeed
0 1 2 3
0.4
0.3
0.2
0.1
Static Pressure Control Range
As By-Pass Damper Opens Static Drops, Blower Slows
By-Pass Damper Closes
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Other Forms of By-Pass Distributed Relief
2-1/2 Ton
(1000 CFM)
Blower
600 CFM
300 CFM180 CFM
120 CFM
Return Air Duct
CAUTION:
If smaller zone faces north and largerzone is south with a lot of solar gain,could cause overheating on coolersunny days.
Set larger Zone Dampers to a minimum
position or undersize damper to duct.
This allows continuous air circulation to
all zones.
May be enough not to require a separate
by-pass.
Keeps main zones from calling as often.
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HVACUnit
Upstairs ZoneDownstairs Zone
Damper Cells on Plenum
Top
View
Plenum Split can go inalmost any direction.
Dampers install side by
side in top or plenum.
GREEN SAVINGSSUSTAINABLE COMFORT
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Multi-Zone Damper Cells Top View
3 Zones4 Zones
2
12x10
1 20x84 10x10
Based on typical 20x20 plenum. Sizes can be whatever fits. Use your ductulator.
GREEN SAVINGSSUSTAINABLE COMFORT
A 3 Z Pl S t
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A 3 Zone Plenum System
2 12x10
1 20x8
Based on typical 20x20 plenum. Sizes can be whatever fits. Use your ductulator.
Living Room Dining Room
ndFloorBedroomsKitchenFamily Room
GREEN SAVINGSSUSTAINABLE COMFORT
A 4 l S
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A 4 Zone Plenum System
4 10x10
Based on typical 20x20 plenum. Sizes can be whatever fits. Use your ductulator.
Living RoomDining Room
ndFloorBedrooms
KitchenFamily Room
MasterBedrooms
GREEN SAVINGSSUSTAINABLE COMFORT
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14
10
10
10
10
12
12
7
7
7
7
7
7
7
7
Round Duct Layout using Flex Duct
Outlets to
individual
rooms.
RD Zone Damper
Ductboard triangles splitduct and provide good
diffusion
GREEN SAVINGSSUSTAINABLE COMFORT
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Typical Duct Layouts
HVACUnit
Return
Supply
Up Down
Up DownUp DownUp Down
Up Down
Up Down
Up DownUp Down
PROBLEM?
GREEN SAVINGSSUSTAINABLE COMFORT
Zone Economics
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Zone Economics
HVACUnit
Return
Supply
Up Down
Up DownUp DownUp Down
Up Down
Up Down
Up DownUp Down
SOLUTION!
Run a second trunk parallel to main.
Move one zones outlets to new trunk.
Add dampers to main and new trunk.
NOTE: Ductwork is
CHEAPER than
dampers!
GREEN SAVINGSSUSTAINABLE COMFORT
Zoning Plan
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Zoning PlanDetermine the number of Zones
Review the Duct LayoutPerform Takeoff to get the size and number ofdampers
for each zone
Zoning List
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Existing Systems
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Existing Systems
Zoning Retrofit Systems
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g y
Overhead Attic Systems
Ducts easily accessible
Simply cut-in dampers
Easy to run wires
Mount Panel near unit
Use Wireless Thermostats
Shut off unused roomsBalance Temperature between rooms
The larger the house the greater the need.
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Retrofit Zoning Dampers Insertable
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g pRound Dampers
Cut a 3/4 slot in the duct
Insert and secure with screws, provided
Model RRP with Plug-In Motor
Model RRM with 24VAC Three Wire Motor
Outlet Zone Damper
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Retrofit Zoning Zone Each Branch Duct
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Retrofit Zoning
HVAC
UnitSupply
Return
Zone Each Branch Duct
By-Pass
Outlet Zone
Damper
Retro-Round
DamperMain
Thermostat
Wirelresss
Thermostat
Wirelresss
Receiver
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Zoning Commercial
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g
Is this your idea of Zoning?
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Zoning Commercial
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g
Spring Return Zone Dampers
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p g p
Rectangular/Square Side Mount
Round Single Blade
All Dampers are 24 VAC, 7 Watts.
Power Closed, Spring Open (Fail-Safe Operation).
All Dampers Reversible to Power Open
Adjustable Minimum Position Close.
NEW Silent Spring Return MotorRectangular-Square
Bottom Mount
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Adjustable Minimum Position
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Adjustable Minimum Position
All Spring Return Dampers can be
easily adjusted for a Minimum Positionwhen closing to allow a minimumamount of air for by-pass and aircirculation.
With the damper Normally Open
Loosen the Set Screw
Move set screw and align with desiredminimum position and tighten.
Power damper closed and damper willstop at minimum position.
NOTE: This set screw and label does not
indicate the damper position and is used only to
set the minimum position.
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Other Damper Applications
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Other Damper Applications
Rectangular/Square Side Mount
Round Single Blade
Fresh Air Intake/Make-Up Air
Return Air Control between high and low
returnsAutomatic Humidifier Damper
Wherever theres a Duct, Theres a need for
a need for an automatic damper.
Rectangular-Square
Bottom Mount
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Independent Zone
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p
Use a thermostat to
operate a single or
multiple dampers.
NO Control of the
HVAC.
Used for over conditioned
rooms or zones.
RY W G C
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TWO and THREE ZONE
Non-Expandable
Single Stage
Gas-Oil-Electric Heating and Cooling
Two Stage and Heat Pump
Two Stage Heat/CoolElectric HP & Dual Fuel
FOUR ZONE
Expandable to 10 Zones
All-In-One
Up to 3H/2C and Heat Pump (No Dual Fuel)
All Panels operate the same.
All Zones Satisfied All Zone Dampers Open
Any Zone Calls Calling Zone Remains Open
Closes Dampers to Satisfied Zones
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Single Stage Heat/Cool
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System LED Power LED
Leaving Air Sensor
24V. Transformer
HVAC Unit
Zone
Dampers
Zone
Thermostats
Set-Up Jumpers
Fan On In Purge
Fan On In Heat
Test
No Sensor
Jumper
Single Stage Heat/Cool
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H32 Zone Control Panel
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Push-In Wiring Bocks, NO SCREWS!
Color Coded Terminals
Three (3) Zone Control Panel
Single Stage, Two Stage and Heat Pump
Built-In Dual Fuel Kit
Compatible with Any Thermostat
LED Readout for System Status
Remote Leaving Air Sensor Control
Outdoor Air Sensor for HP Fossil Fuel
Built-In Stage Timer Eliminates Need for Two Stage
Thermostats
DIP Switches Configuration
Reliable Relay Output for Dampers and HVAC
Equipment
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MZS4 Zone Control Panel
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MZS4 Zone Control Panel
Push-In Wiring Bocks, NO SCREWS!
Color Coded TerminalsFour (4) Zone Control Panel
Expandable with Zone Adder Panels
Single, Two Stage and Heat Pump
Compatible with Any Thermostat
LED Readout for System Status
Remote Leaving Air Sensor Control
Built-In Stage Timer Eliminates Needfor Two Stage Thermostats
8 DIP Switches for ConfigurationReliable Relay Output for Dampersand HVAC Equipment
Built-In Re-settable Fuse
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MZS4 Panel Wiring Diagram
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Outdoor Unit
HVAC Equipment
Indoor Unit
T24 VOLT 40VA
TRANSFORMER
ZONE1
ZPS SENSOR
Z
ONE2
ZONE3
ZONE4
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Zone Thermostat and Damper Connections
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Thermostat Connections
FAN - G
COOL - Y
TRANSFORMER - R
HEAT - W
TRANSFORMER - C
Damper Connections2 Wires
Single Stage and Two Stage 4/5 Wires
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Heat Pump Thermostat and Damper Connections
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Heat Pump Thermostat Connections
Emergency Heat* E
Fan - G
Cool - Y
Trans.(Hot) R
Reversing Valve - O
Trans(Common) - C
Damper Connections
2 Wires
*Emergency Heat Termiinal only makes on a call for Emergency Heat and will lock out compressor. Do not use thermostats with W 2/E as second stage call will also lock out compressor.
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2004-11 ZONEFIRST
HVAC Equipment Connections - Single and Two Stage
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HVAC Equipment Connections Single and Two Stage
Instead of wiring to the thermostat, wire tothe zone panel just like the thermostat.
Second Stage Heat
First Stage Heat
24V Transformer
Fan Relay
First Stage Cooling
Second Stage Cooling
Outdoor Unit
HVAC Equipment
Indoor Unit
Common
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Heat Pump Equipment Connections
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Instead of wiring to the thermostat, wire to the zone panel just
like the thermostat.
W - Second Stage Heating Relay
E - Emergency Heating Relay
R - 24 Volt Transformer (Hot)
G - Fan Relay
O- Reversing Valve Relay - Cool
Y - Compressor Relay
B - Reversing Valve Relay - Heator
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2004-11 ZONEFIRST
Zone Plenum Sensor Model ZPS
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Protects HVAC Equipment from over-heating or over-cooling when only a few zones are calling and/or air is
being bypass through the return. Leaving Air Sensor is placed in supply air plenum, out of line of sight of heat
exchanger, evaporator coil and before radiant strips on a heat pump.
Adjustable setting on heating from 100F to 170F on panel.
Cooling is fixed at 45F.
NO SENSOR JUMPER When not using this sensor place jumper across these
pins. If jumper is not in place System LED will flash and HVAC Unit will not
activate.
Adjustable Heating Limit Dial
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2004-11 ZONEFIRST
24 Volt Transformer
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24 Volt, 40VA Transformer, Model T24
C - Common
R - Hot
A separate 24 Volt, AC, 40VA Transformer is recommended to power the zone
panel, thermostats and damper motors.
The re-settable fuse protects the board and transformer from accidental shorts. If
the board is not operating, check for to see if HOT. If it is remove all wiring to
the circuit board and apply only the 24 Volt Transformer to the panel. The panel
power LED will illuminate showing the board is operating and now to check for
the short, somewhere.
Re-settable Fuse
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2004-11 ZONEFIRST
MZA2 Zone Adder
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Using a RJ11 (six conductor) telephone jack cord connects the main panel
to the adder panel. Adds two zones to the MZS4 Zone Panel. Up to 3
MZA2 Panels can be used to add up to 6 zones for a total of 10 zones.
Each Zone Adder panel comes with a 7 foot cable.
To additional Zone
Adder Panels.
MZS4 Panel
March 23-25, 2011 Landsdowne, VA
2004-11 ZONEFIRST
The Advantage
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The Advantage
EZ Wir ing
Plug and Play
Color Coded Push-In
Thermostat Connections
Plug-In Damper Motors
Using RJ11 Telephone Wire
Simplifies Wiring
Wire in a Fraction of the time.
Eliminates Mistakes
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2004-11 ZONEFIRST
Plug Play Zone DampersSide Mount
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Damper LED GREENOpen
RED- Closed
25 Modular Cord
Included w/each Damper
Dual Motor Connections
Daisy Chain up to 10 Dampers/Zone
Retro-Round Damper - RRP
Bottom Mount
ZDBP
ZDSP
Outlet Damper
OZD
Round Damper
RDP
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2004-11 ZONEFIRST
Its Too Complicated?
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Zone 1 Supply Air Duct Zone 2 Supply Air Duct
T T
4/5 Wire Thermostats for each Zone
2 Wire Dampers for each Zone
24V-40VA Transformer to Power Control
Panel and Dampers4 Wires (Y-G-R-W) to HVAC Unit
By-Pass Damper from Supply to Return
Zone Plenum Sensor in Plenum
ZONE
THERMOSTATZONE
THERMOSTAT
ZONE DAMPERS
TRANSFORMER
CONTROL
PANEL
Zone Plenum
Sensor
Return
AirDuct
By-Pass Damper
BLOWER
HEAT EXCHANGER
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2004-11 ZONEFIRST
Its Too Complicated?
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p
Damper Installation:
1. Cut a 4 slot in the side of the duct.
2. Slide the Damper in.
3. Secure with self-tapping screws provided.
The rest is simple wiring, using standard thermostat wire:
March 23-25, 2011 Landsdowne, VA
2004-11 ZONEFIRST
Troubleshooting Zoning
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What can/does go wrong?
Wiring Disconnected or changed
Damper Motors Wear OutVolt/Ohm Meter to Check
All 24 Volts
Three Basic Problems
Heat/Cooling wont come on
Heat/Cooling wont shut off
Dampers not Operating
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2004-11 ZONEFIRST
Troubleshooting Zoning -
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Troubleshooting Zoning Damper
March 23-25, 2011Landsdowne, VA2004-11 ZONEFIRST
ON24VAC
Damper PowerCheck 24V across COMOPENCheck 24V across COM-CLOSECheck 24V at PanelCheck 24V at Damper
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Thermostat
March 23-25, 2011Landsdowne, VA2004-11 ZONEFIRST
ON24VAC
Ohm Thermostat Wires at Panel (non-powered)Disconnect Wires from PanelOhm R-W Heat CallOhm R-G Fan CallOhm R-Y Cool Call
Check 24V from Thermostat (Powered Stat)Common must be wired to C on Panel
All other wires disconnected.Check 24VAC - C-W Heat CallCheck 24VAC - C-Y Cool CallCheck 24VAC - C-G Heat CallCheck 24VAC - C-E Em.Heat Call (Heat PumpStat)
Jumper Panel Thermostat TerminalsR-W Heat Call - RED System LEDR-Y Cool CallGreen System LEDR-G Fan CallYellow System LED
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March 23-25, 2011 Landsdowne, VA
2004-11 ZONEFIRST
ON0 Ohms
Check Panel Terminals
Ohm R-W Heat Call
Ohm R-G Fan Call
Ohm R-Y Cool Call
Insure 24VAC at Panel
Outdoor Unit
Indoor Unit
Zoning vs. Multiple Units
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g p
Try this exercise using two units:
Two Units vs. One Unit and Zoning
2 - 50,000 BTU 80% Furnace @ $565.00 each =$1,030.00
Vs.
1 100,000 BTU 80% Furnace @ $800.00 each = 20% $avings
And
2 24,000 BTU 13 SEER Condensers (w/coil/tubing) @ $1,324 ea. = $2,648.00
Vs.1 42,000 BTU 14.5 SEER Condenser (w/coil/tubing/)@ $2,346 = 11% $avings
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2004-11 ZONEFIRST
Zoning vs. Multiple Units
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g p
Try this exercise using two units:
Two Units vs. One Unit and Zoning
2 - 50,000 BTU 80% Furnace @ $565.00 each =$1,030.00
Vs.
1 100,000 BTU 80% Furnace @ $800.00 each = 20% $avings
And
2 24,000 BTU 13 SEER Condensers (w/coil/tubing) @ $1,324 ea. = $2,648.00
Vs.1 42,000 BTU 14.5 SEER Condenser (w/coil/tubing/)@ $2,346 = 11% $avings
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Zoning vs. Two Units = $avings
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g g
Two Units vs. One High Efficiency Unit with Zoning2 80% AFUE (50,000 BTU) 1,030.00 vs. 1 80% AFUE (100,000 BTU) 800.002 13 SEER 2 Tons A/C 2,648.00 vs. 1 14.5 SEER 3.5 Tons A/C 2,346.00
1 2 Zone System 514.503,678.00 3,660.50
Plus other incidental savings of:Only one electrical disconnect.Only one condensing unit pad.
March 23-25, 2011 Landsdowne, VA
2004-11 ZONEFIRST
Downs izing and Eff ic iency
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Downs izing and Eff ic iency
Ratings
Take a typical home that requires 100,000 BTU.
Zone house using 2 separate furnaces.
Typically use 2-50,000BTU Furnaces.
Being that cost is often a driver in the HVAC Businessthe units are minimum efficiency.
2 x 50,000 BTU = 100,000 BTU x 80%AFUE = 80,000 BTU
1 x 90,000 BTU = 90,000 BTU x 90%AFUE = 81,000 BTU
March 23-25, 2011Landsdowne, VA
2004-11 ZONEFIRST
Cooling Efficiency and Zoning
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Use a sample home sized for 4 Tons of A/C.
Zone house using 2 separate air conditioners.
Typically 2-2 Ton A/C. Being that cost is often a driver in the HVAC Business
the units are minimum efficiency.
2 x 24,000 BTU = 48,000 BTU x 13 SEER $336.00
1 x 42,000 BTU = 42,000 BTU x 16 SEER $491.00
-12% 6,000 BTU +20% SEER
March 23-25, 2011 Landsdowne, VA
2004-11 ZONEFIRST
Zoning and Efficiency
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Two Smaller
Lower Efficiency Units
One Larger
Higher Efficiency Unit
and ZONING
50MBTU
80% AFUE
50MBTU
80% AFUE
2 Ton
13SEER
2 Ton
13SEER
3.5 Ton
14.5 SEER
Two UnitsTotal
80MBTU
4 Tons
One Unit
with ZONINGTotal
81MBTU
Same Capacity
10% More Efficient
3.5 Tons
23% More Efficient
12.5% Less Capacity
vs.
90MBTU
90% AFUE
March 23-25, 2011 Landsdowne, VA
2004-11 ZONEFIRST
Zoning Heat Pumps
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Every Heat Pump should be ZonedSized for Cooling Load
Limited Heating Output
Undersized for Heating Loads
Require back-up on colder temps
Zoning Heats Single Zones
Capacity of Heat Pump = Zone Load
Lessens the need for back-up heat
March 23-25, 2011 Landsdowne, VA
2004-11 ZONEFIRST
Zoning and Efficiency Ratings
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g y g
Try this exercise with a contractor using two units in
new construction:Review the previous two slides using the brand
equipment he uses.
After calculating using one unit vs. two, ask to see hisequipment pricing and price out the 2 lower efficiencyunits vs. the one higher efficiency unit.
Compare the costs and add in a Zoning System.
Find the difference. In many cases the equipment costmay be the same or somewhat less for the single unit. Thedifference can be used to pay for the zoning system.
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How do you get zoning sales??
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y g g
Quote it on every job.
Hydronic Systems its Automatically Included.
Point out that they may have zoning in their car,but not in their home.
Sell the benefit of added comfort.
Sell the benefits of 25% Energy Savings, the systemwill pay back for itself.
Sell the benefit of convenience of being able tocontrol the temperature where you are.
Its just common sense, like a light switch!
March 23-25, 2011 Landsdowne, VA
2004-11 ZONEFIRST
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Zoning Information
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Product Catalog Design Guide
www.zonefirst.com
1-877-FIRSTZONE
March 23-25, 2011 Landsdowne, VA
2004-11 ZONEFIRST
By-Pass Calculator CD Catalog
Q & A
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Q & AQuestionsand Answers