Bryant Evolution SYSTXBB4ZC01 Instructions and recipes

SYSTXBB4ZC01
EvolutionrDamper Control Module
Installation and Start--Up Instructions
A97038
NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury or property
damage. Consult a qualified installer, service agency or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory--authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings and cautions
included in literature and attached to the unit. Consult local
building codes and the current edition of the National Electrical
Code (NEC) NFPA 70. In Canada, refer to the current editions of
the Canadian Electrical Code CSA C22.1.
Recognize safety information. When you see this symbol on
the unit and in instructions or manuals, be alert to the potential for
personal injury. Understand the signal words DANGER,
WARNING,andCAUTION. These words are used with the
safety--alert symbol. DANGER identifies the most serious hazards,
which will result in severe personal injury or death. WARNING
signifies hazards, which could result in personal injury or death.
CAUTION is used to identify unsafe practices, which may result
in minor personal injury or product and property damage. NOTE
is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
INSTALLATION CONSIDERATIONS
Before the actual installation of a zoning system can begin,
decisions need to be made to determine the number and location of
zones and sensors. This affects duct and damper selections.
See the EvolutionrSystem Zoning Design Guide for more
information on specifying and designing zoning systems.
This instruction covers the physical installation and start up of the
EvolutionrDamper Control. Use this instruction to guide the
actual installation process after all the air side decisions have been
made. One Damper Control is capable of handling up to four zones
of operation. When greater than four zones are required, a second
Damper Control Module is needed for zones 5 through 8 (8 zones
maximum).
SInstall the EvolutionrZone Control (EvolutionrConnextWall
Control) and Remote Room Sensors in non--condensing areas
with ambient temperatures between 32F and 120F. Install
dampers and the EvolutionrDamper Control in non--condensing
areas with ambient temperatures between --4F to 158F(--20to
70C).
SA TXV is required on the indoor coil when used with all
residential split system equipment.
SProper equipment selection and duct sizing are important in a
zoned system.
SDO NOT USE a bypass damper with the EvolutionrZoning
System. Addition of a bypass will cause improper operation.
Airflow management will be performed by the Evolution r
ConnextWall Control algorithms. The EvolutionrConnext
Wall Control will monitor the system and will maintain proper
airflow through the heating / cooling equipment.
INTRODUCTION
The EvolutionrZoning System allows air conditioning and
heating equipment to control temperatures and humidity in up to 8
distinct spaces, or zones, within a building. Each zone has
independent temperature settings. The comfort temperature
settings can change automatically through the use of schedules.
This allows the EvolutionrSystem to change temperature settings
in zones to reflect occupancy or usage. For example, the end user
can condition bedrooms in a home from 5:00 PM through 7:00
AM or the kitchen from 3:00 PM through 6:00 PM. The
EvolutionrSystem uses motorized air volume control dampers
(also called zone dampers) to regulate flow of conditioned air into
zones. In this manner, the system can selectively heat or cool
certain portions of a building depending upon space temperature
requirements.
Each zone requires a motorized zone damper to control the air
supplied to it and a zone sensor to sense temperature in each zone.
There are three types of zone sensors available and may be used in
combination:

2
SEvolutionrConnextWall Control (p/n SYSTXCBBECC01,
SYSTXBBECW01, or SYSTXBBECN01) — Each installation
has only one Master wall/zoning control. This is the command
center for the entire system. It will typically be located in Zone 1
to sense and control the temperature in this zone. If desired, a
Remote Room Sensor or a Smart Sensor may be used to sense the
Zone 1 temperature. This can give the installer some flexibility in
locating the Master EvolutionrConnextwall control to another
area.
SRemote Room Sensor (p/n SYSTXBBRRS01) — Any zone may
use a Remote Room Sensor (including Zone 1). This is a
temperature sensor only, having no additional user inputs. In
applications where zone temperature averaging may be desired,
this may be done using 4 Remote Room Sensors in a series /
parallel wiring configuration (See Fig. 11 for Remote Room
Sensor Averaging).
SSmart Sensor (p/n SYSTXBBSMS01) — Any zone may use a
Smart Sensor (including Zone 1). It provides a temperature
display and buttons to adjust the desired temperature in that zone
only. It also displays the outdoor temperature and indoor
humidity.
Be sure to select the desired sensor type for each zone. Zone sensors
other than the EvolutionrConnextwall control must be purchased
separately. Installation Instructions for these sensors are included
with them.
INSTALLATION
Step 1 — Check Equipment and Job Site
INSPECT EQUIPMENT—File claim with shipping company,
prior to installation, if shipment is damaged or incomplete.
Step 2 — Component Location and Wiring
Considerations
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Before installing sensor, turn off all power to unit. There may
be more than one power disconnect.
!WARNING
NOTE: All wiring must comply with national, local, and state
codes.
LOCATING EvolutionrDAMPER CONTROL
All system wiring is run back to the EvolutionrDamper Control.
Select a location near the Evolutionrfurnace or fan coil where
wiring from the EvolutionrConnextwall control, each Remote
Room Sensor or Smart Sensor, each damper actuator, and the
equipment itself can come together easily.
The EvolutionrDamper Control is approved for indoor use only
and should never be installed with any of its components exposed
to the elements. The EvolutionrDamper Control (and the zone
dampers) may be installed in any area where the temperature
remains between --4F to 158F(--20Cto70C), and where
there is no condensation. The cover must be installed to prevent
damage from other sources. Do not locate where it will be
accessible to children. It may be mounted in either vertical or
horizontal position. Remember that wiring access is likely the most
important consideration.
ELECTRICAL OPERATION HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
To prevent possible damage to the EvolutionrDamper
Control, do not mount on plenum, ductwork, or flush against
surface.
CAUTION
!
LOCATING MASTER ZONING WALL CONTROL
The EvolutionrConnextwall control is the command center for
the EvolutionrZone System. It should be located where it is easily
accessible and visible to home or business owner. It is also
normally the Zone 1 sensor and as such needs to be located to
properly measure the temperature in Zone 1. If these two
requirements conflict, a separate Remote Room Sensor can be
added for Zone 1.
When a Remote Room Sensor is connected to Zone 1 terminals
(ZS1 and ZS1C) of the EvolutionrDamper Control, the system
automatically switches to using this sensor for Zone 1 and ignores
the sensor within the EvolutionrConnextwall control. This
arrangement allows the EvolutionrConnextwall control to be
located at any convenient place within the home or business. In this
arrangement, only the Zone 1 Remote Room Sensor must be
located in Zone 1.
NOTE: The EvolutionrConnextwall control also controls
humidity functions. If the wall control is not used to control Zone 1
temperature, it must still be located in a suitable area where
humidity control will not be affected.
LOCATING SENSORS
For proper operation, each sensor must accurately measure the
temperature within its zone. For accurate temperature
measurement, the following guidelines should be followed:
Sensor should be mounted:
SApproximately 5 ft. (1.5m) from floor.
SClose to the center of its zone, preferably on an inside wall.
SOn a section of wall without pipes or duct work.
Sensor should NOT be mounted:
SClose to a window, on an outside wall, or next to a door leading to
the outside.
SWhere it will be exposed to direct light and heat from a lamp, sun,
fireplace, or other temperature radiating object which may cause a
false reading.
SClose to or in direct airflow from supply registers.
SIn areas with poor air circulation, such as behind a door or in an
alcove.
WIRING CONSIDERATIONS
Ordinary thermostat wire is ideal when wiring the Evolutionr
Zoning System (shielded cable is not necessary). Use 20 AWG or
larger for typical installations. Lengths over 100 ft. should use 18
AWG or larger wire. Remote Room Sensors require only two
conductors, but it is recommended that at least four conductors be
run. This will allow a Smart Sensor to replace the Remote Room
Sensor with no wiring changes at a later date. The Evolutionr
Connextwall control requires four conductors, each damper
actuator requires three conductors. Cut off or fold back and tape
any unneeded wires. Plan the routing of wiring early to avoid
possible problems later. Remember, all wires converge at the
EvolutionrDamper Control, so its location is important.

3
NOTE: Wiring of the ABCD bus only requires a four--wire
connection; however, it is good practice to run thermostat cable
having more than four wires in the event of a damaged or broken
wire during installation.
The following color code is recommended for each ABCD bus
connection:
A— Green = Data A
B— Yellow = Data B
C— White = 24 VAC (Com)
D— Red = 24VAC (Hot)
It is not mandatory that the above color code be used, but each bus
connection in the system MUST be wired consistently.
Step 3 — Install Components
INSTALL EvolutionrDAMPER CONTROL
The EvolutionrDamper Control is designed so that wires can enter
it from behind, above, or below. Plan wire routing before mounting
Damper Control.
1. Remove cover to access mounting holes.
2. Mount back plate to wall using screws and wall anchors
provided.
3. Level back plate and tighten screws.
INSTALL MASTER ZONING WALL CONTROL
See the EvolutionrConnextwall control Installation Instructions
for details.
NOTE: Improper wiring of the ABCD connector will cause the
EvolutionrZoning System to operate improperly. Check to make
sure all wiring is correct before proceeding with installation or
turning on power.
INSTALL REMOTE ROOM SENSORS
1. Separate the sensor cover and mounting back plate by
squeezing the top and bottom of the cover together firmly
by grasping the raised top and bottom ridges. This will re-
lease the cover. Mount to the wall using the screws and an-
chors provided.
2. Pull a 2--conductor wire through hole on right--hand side.
3. Recommended connection is BLACK to either terminal,
WHITE to remaining terminal (sensor terminals are not
marked for polarity because polarity is not important).
Stranded or common bell wire may be used. Lengths up to
1000 ft. will contribute no noticeable error.
4. Push any extra wire into the wall and seal the hole to pre-
vent air leaks. Align the sensor cover with the base plate,
then press firmly until the cover snaps into place.
INSTALL ZONING SMART SENSOR
See the EvolutionrZoning Smart Sensor Installation Instructions
for details.
Step 4 — Install Zone Dampers
Proper selection and sizing of dampers is very important for proper
system operation. Be sure to consult the Damper Product Data
Sheet and EvolutionrZoning Design Guide for assistance in
making these selections. Selection and sizing information is not
provided in this installation instruction. Zone dampers are available
in round, rectangular, and slip--in design, and may be installed in
any position. Install the damper so that the actuator is visible for
inspection and accessible in the event it would need to be serviced.
The black mark on the end of the damper shaft represents the
position of the damper blade. To wire the damper, locate the
terminals labeled: OPN (open); COM (common); CLS (closed; and
wire appropriately (see Fig. 1 for Damper 24 VAC connection).
SET SCREW
MOUNTING HUB
ANTI-ROTATION
MOUNTING SCREW
3/16"
GAP
DAMPER
3/16"
GAP
SET SCREW MOUNTING HUB
ACTUATOR
HOUSING
QUICK BLADE
RELEASE
(CLS) CLOSED
(COM) COMMON
(OPN) OPEN ANTI-ROTATION
MOUNTING SCREW (5/16")
PLASTIC COVER
CLS COM OPN
CLS
COM
OPN
Fig. 1 -- Damper 24VAC Connections
C03024
If the duct system requires multiple dampers for a single zone, up
to five dampers (maximum) may be wired in parallel. For all
applications, including retrofit, it is recommended to use only
current dampers with direct--drive style actuators. DO NOT use
older damper with crank--arm style actuators.
If an actuator is removed from a damper for any reason, it must be
properly aligned when it is reinstalled. This can be done by
rotating the actuator and the blade to their closed positions and
then tightening the actuator (set screw) to the shaft. This assures
alignment at the closed position. (Pressing the quick blade release
button allows the actuator to be manually turned.)
ELECTRICAL OPERATION HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Condensation can damage the actuator. When dampers are
located in an unconditioned space, condensation is likely to
occur in cooling. To prevent condensation and losses, all
dampers and ductwork in unconditioned space must be
insulated or otherwise protected.
CAUTION
!
Whenever condensation might occur, it is recommended that a
plastic actuator cover (p/n, DAMPACTXXCOV) be used over the
actuator. This cover can help prevent condensation on the actuator
by helping to keep out ambient humidity. Insulation may be
applied over the cover to minimize heat transfer.
To install, place the cover over the actuator and seal it in place over
the surrounding insulation with duct tape on all four sides. Sealing
need not be perfect because there will be positive pressure inside
the cover. Do not mount the dampers with their actuators hanging
directly beneath the ductwork. It is best to mount the actuator
facing in either the three or nine o’clock position.
For specific duct types, follow the instructions below:
NOTE: All zone dampers and ductwork must be properly
supported according to local codes or SMACNA standards.

4
ROUND METAL DUCTWORK
1. Crimp the end of the branch duct.
2. Slip the end of the zone damper over the ductwork end. Use
a self--tapping sheet metal screw to secure.
3. Properly seal the joint using duct tape, mastic, or other ap-
proved method. Do not allow mastic to come in contact
with the actuator.
4. If dampers are applied in an unconditioned space, insulate
themusing1--1/2inchto2inchinsulation(SeeFig.2).
/ ≤STEEL STRAP
1
2
Fig. 2 -- Insulated Round Metal Duct Work
A95130
RECTANGULAR DUCTWORK
1. Make connections using S--lock and drives (See Fig. 3).
2. Properly seal the joint using duct tape, mastic, or other ap-
proved method. Do not allow mastic to come in contact
with the actuator.
3. If dampers are applied in an unconditioned space, insulate
themusing1--1/2inchto2inchinsulation(SeeFig.4).
DRIVE ZONE
DAMPER
S-LOCK
SUPPLY
A
IR DUCT
Fig. 3 -- Rectangular Metal Ductwork
A92478
1 / " TO 2"
INSULATION
12
Fig. 4 -- Insulated Rectangular Metal Ductwork
A95131
ROUND FLEXIBLE DUCTWORK
1. Slip one end of the flexible ductwork over the zone damper
end (See Fig. 5).
2. Secure flexible duct to the zone damper using SMACNA or
other approved method.
3. Properly seal the joint using duct tape, mastic, or other ap-
proved method. Do not allow mastic to come in contact
with the actuator.
4. If dampers are applied in an unconditioned space, insulate
themusing1--1/2inchto2inchinsulation(SeeFig.6).
FLEXIBLE
DUCT
ZONE
DAMPER
Fig. 5 -- Round Flexible Ductwork
A95132
/ ≤STEEL STRAP
12
Fig. 6 -- Insulated Round Flexible Ductwork
A95133
RECTANGULAR FIBROUS GLASS DUCTWORK
1. Insert one end of the zone damper into the fibrous glass
ductwork end approximately 2 to 3 inches (See Fig. 7).
2. Use the field supplied screws to secure the duct board to the
zone damper.
3. Properly seal the joint using duct tape, mastic, or other ap-
proved method. Do not allow mastic to come in contact
with the actuator.
4. If dampers are applied in an unconditioned space, insulate
themusing1--1/2inchto2inchinsulation(SeeFig.8).
ZONE
DAMPER
2≤TO 3≤
FIBROUS
GLASS
DUCTWORK
FIELD
SUPPLIED
SCREWS
Fig. 7 -- Rectangular Fibrous Glass Ductwork
A92480
1 / ≤TO 2≤
INSULATION
12
Fig. 8 -- Insulated Rectangular Fibrous Glass Ductwork
A95134

5
Step 5 — Final Wiring
Bring all damper and sensor wires together at the Evolutionr
Damper Control. Make all system wiring connections as shown in
Fig. 9. The two ABCD bus connections on the EvolutionrDamper
Control are in parallel with each other. Use either terminal block to
connect the Master Zoning Wall Control, Smart Sensor(s),
variable--speed indoor unit and 2--speed communicating outdoor
unit (if applied). If more than four zones are required (up to 8
zones maximum), see Step 6 and Fig. 10 for additional Damper
Control Board Setup for Zones 5--8.
Zoning System Wiring Diagram
Yellow Green
OFF
A B C D
CLS1
COM1
OPN1
LAT COM HPT
Y R G B
ZS1
ZS1C
ZS2
ZS2C
ZS3
ZS3C
ZS4
ZS4C
CLS2
COM2
OPN2
CLS3
COM3
OPN3
CLS4
COM4
OPN4
Zone-1
Damper
Optional
Zone-1
Sensor _
Zone-2
Sensor
Zone-3
Sensor
Zone-4
Sensor
Zoning User Interface &
Smart Sensor(s)
Connection
A B C D
Y R G B
Indoor
Unit
A B C D
A B C D
2-spd.
Outdoor
Unit
A B C D
Ventilator
Unit
Optional -
Leaving Air & Heat Pump
Temperature Sensor
See Note _
Notes:
_ ABCD CONNECTORS ARE IN PARALLEL WITH EACH OTHER. USE EITHER TERMINAL BLOCK FOR ANY ABCD CONNECTION.
_ INSTALLING ZONE-1 REMOTE ROOM SENSOR WILL OVERRIDE USER INTERFACE TEMPERATURE SENSOR.
Zone-2
Damper
Zone-3
Damper
Zone-4
Damper
Status LEDs
DIP Switch
Zones 1 - 4
Damper Control Module, Zones 1 - 4
ABCD Connection:
A = Green: RS485+
B = Yellow: RS485-
C = White: 24VAC (COM)
D = Red: 24VAC (HOT)
Dampers:
CLS_ = Close
COM_ = Common
OPN_ = Open
FUSE
1 2
ON
A B C D
Zoning User Interface &
Smart Sensor(s)
Connection
A B C D
Indoor
Unit
A B C D
A B C D
2-spd.
Outdoor
Unit
A B C D
Optional
Transformer
Fig. 9 -- System Wiring
A03161
Zoning System Wiring Diagram
Yellow Green
A B C D
CLS1
COM1
OPN1
LAT COM HPT
Y R G B
ZS1
ZS1C
ZS2
ZS2C
ZS3
ZS3C
ZS4
ZS4C
CLS2
COM2
OPN2
CLS3
COM3
OPN3
CLS4
COM4
OPN4
Zone-5
Damper
Zone-5
Sensor
Zone-6
Sensor
Zone-7
Sensor
Zone-8
Sensor
Connect to Zones 1-4
Damper Control
Module
A B C D
A B C D
See Note _
Zone-6
Damper
Zone-7
Damper
Zone-8
Damper
For Zones 5-8, a second Damper
Control Module must be applied
ON = Zones 5-8
Notes:
_ FOR ZONES 5 THROUGH 8: A SECOND DAMPER CONTROL MODULE IS REQUIRED. BUS CONNECTION
ABCD MUST BE CONNECTED BETWEEN BOTH DAMPER CONTROL MODULES.
_ SET BOTH DIP SWITCH POSITIONS TO ON (right position) AT SECOND MODULE ONLY TO ACTIVATE ZONES 5-8.
Zones 5 - 8
Damper Control Module, Zones 5 - 8
No Connection
ON
DIP Switch
Dampers:
CLS_ = Close
COM_ = Common
OPN_ = Open
FUSE
1 2
ON
Fig. 10 -- Additional Damper Control Board Setup for Zones 5 -- 8
A03162

6
VENTILATOR WIRING
The EvolutionrDamper Control can control a Carrier Heat
Recovery Ventilator or Energy Recovery Ventilator (HRV / ERV).
Connect the four wires from the ventilator control board (see
ventilator installation instructions for details) to the connector
labeled YRGB. This label identifies the color of the wire to match
the ventilator wire colors (Y=yellow, R=red, G=green, B=blue or
black). If you have two EvolutionrDamper Controls, connect the
ventilator to the control for zones 1 through 4.
LEAVING AIR TEMPERATURE / HEAT PUMP TEMPER-
ATURE (LAT / HPT) SENSORS
These inputs on the EvolutionrDamper Control are used only for
diagnostic purposes and NOT required for regular use.
Traditionally, the LAT/HPT sensors were required for temperature
and equipment monitoring. The EvolutionrZoning System does
not require these because the EvolutionrConnextwall control
algorithms will perform temperature and airflow management
without the use of these sensors. If desired, one or both sensors
may be used to monitor leaving air temperature and/or indoor coil
air temperature. Consideration and/or flexibility will now permit
using one of these sensors in the return air duct giving the dealer an
option to view both entering and leaving air temperature at the
EvolutionrConnextwall control. If applied, connect sensors to
the LAT / HPT terminals (See Fig. 9, System Wiring, for
connection to the EvolutionrDamper Control). LAT is monitored
by both AC and HP systems. LAT and HPT are both monitored
only in HP systems.
To install -- Locate the LAT sensor in the main supply trunk after
the heating and cooling coil and before the first branch. The LAT
sensor is radiant shielded to prevent heat from affecting correct air
temperature.
1. Drill a 1/4 inch hole at the location in the supply trunk
where the sensor will be installed.
2. Insert the sensor in the hole and use it as a template to mark
the two mounting holes.
3. Drill two 1/16 inch holes to accept #6 screws through pre--
drilled holes in the duct temperature sensor backplate.
4. Use two #6 sheet metal screws to mount the duct tempera-
ture sensor to the unit.
5. Connect the sensor to 2--conductor wire using the provided
wire nuts.
The HPT sensor (in heat pump applications) measures the
temperature of the air leaving the indoor coil. The sensor is
installed downstream of the indoor coil, but before the electric
heaters. It can be installed through the wall of the fan coil or may
be located entirely inside the fan coil near the blower inlet. Anchor
firmly in place with cable ties so that it cannot interfere with the
blower wheel (See Fig. 9).
LED INDICATORS
Under normal operation, the Yellow and Green LEDs will be on
continuously (solid). If the EvolutionrDamper Control does not
receive communications with the EvolutionrConnextWall
Control, the Green LED will not be on. If there are faults present,
the Yellow LED indicator will blink a two--digit status code. The
first digit will blink at a fast rate, and the second at a slow rate.
STATUS CODE DESCRIPTION
16 = Communication Failure
24 = Damper Fuse Failed
45 = Board Failure
46 = Low Input Voltage
FUSE
A 1A automotive type fuse is used to protect the Evolutionr
Damper Control from over current on the damper drive outputs. If
this fuse fails, the damper wiring should be inspected for shorts.
Also, no more than five damper motors should be connected to a
single damper output. The fuse should always be replaced with an
identical 3A automotive type.
Step 6 — Additional Damper Control Board Setup
If you have more than four zones, a second EvolutionrDamper
Control must be used and both dip switch settings on the second
board supporting zones 5 through 8 must be moved to the right.
The ABCD bus connector must be wired between both Evolutionr
Damper Controls.
Step 7 — Transformer Requirements
The EvolutionrZoning System has a lower power draw than the
system transformer from previous controls. It also drives only two
zone damper outputs at a time. As a result, up to eight zones each
with up to five dampers, plus a smart sensor, can be handled
without increasing the size of the system transformer or adding a
second zoning transformer.
Use of the transformer provided in the furnace or fan coil is
recommended without change in all zoning applications except
those having a System Access Module (SAM). The SAM requires
a separate transformer.
For those who still want more transformer capacity, a 60 VA
system transformer may be used in place of the supplied 40 VA
part.
Step 8 — System Start--up
Follow the system start--up process outlined in the Evolutionr
Connextwall control Installation Instructions for details.

7
Sensor 1 Sensor 2
Sensor 3 Sensor 4
Damper Control
Module
ZS_
Damper Control
Module
ZS_C
Fig. 11 -- Remote Room Sensor Averaging 4--Sensor Application (series -- parallel)
A03233
TROUBLESHOOTING
EvolutionrConnextWall Control does not power up:
1. Recheck the wiring to the ABCD connector on all devices.
Make sure all colors match for every terminal.
2. Make sure power is applied to the indoor unit, and the Yel-
low and Green LEDs are lit on the EvolutionrDamper
Control.
3. Check for 24 VAC between the C and D terminals at the
EvolutionrConnextwall control terminal block.
4. Check the fuse at the indoor unit circuit board, and the Evo-
lutionrDamper Control.
EvolutionrConnextWall Control display says “Indoor Unit
Not Found:”
1. Recheck the wiring to ABCD on all devices. Make sure all
colors match for every terminal.
2. Press the side button at the EvolutionrConnextwall con-
trol to try again.
3. Check for power to the indoor unit.
4. Disconnect all ABCD connections from every device and
only reconnect the EvolutionrConnextwall control to the
indoor unit. If the indoor unit is identified by the wall con-
trol, then another device on the ABCD connection may be
at fault. Reconnect each device’s ABCD connection one at a
time and perform a Re--Install from the Service Menu after
each connection is made. If one or more devices are not
found after reconnecting the last device, the last device may
be suspect.
5. If the ABCD connection only contains an indoor unit and
an EvolutionrConnextWall Control, then the wiring, in-
door unit control board, or EvolutionrConnextWall Con-
trol may be at fault.
EvolutionrConnextWall Control display says “Outdoor
Unit Not Found” when applied with a two--speed communicat-
ing outdoor unit:
— Recheck the wiring to the ABCD connector on the
outdoor unit. Make sure all colors match for every
terminal.
EvolutionrConnextWall Control cannot find Zones 5 -- 8:
1. Make sure zone module 5 -- 8 has the dip switches set to the
far right.
2. Recheck the wiring to the ABCD connections.
EvolutionrConnextwall control can find zones 5 -- 8, but not
1--4:
1. Make sure zone module 1 -- 4 has the dip switches set to the
far left.
2. Recheck the wiring to the ABCD connections.
Some zones do not provide enough comfort (a noticeable
difference exists between the actual room temperature and
operating set point, or equipment does not turn on):
— The zone airflow limit may be set too low. Perform the
zone airflow limit checkout procedure. See the
EvolutionrConnextwall control Installation
Instructions for details.
Some zones provide too much airflow and are noisy:
— The zone airflow limit may be set too high. Perform the
zone airflow limit checkout procedure. See the
EvolutionrConnextwall control Installation
Instructions for details.
Zone dampers do not move:
1. Check the fuse located on the EvolutionrDamper Control.
If the fuse is failed, check the damper wiring and inspect for
shorts. No more than five damper motors should be con-
nected to a single damper output. The fuse should be re-
placed with an identical 3A automotive type.
2. Use the System Checkout procedure (refer to the Installa-
tion Instructions) to test the zoning dampers and to verify
that the correct set of dampers is opening for each zone.
3. Dampers may be powered directly—for testing purposes
only—by connecting 24VAC directly across Com and
Open, or Com and Close. The damper should open or
close, based on which input is being powered. This will
rule out the damper.

8
Copyright 2015 Bryant Heating and Cooling Systems S7310 W. Morris St. SIndianapolis, IN 46231 Edition Date: 9/15
U.S. Export Classification: EAR99.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
C a t a l o g N o : I I --- D A M P 4 Z C --- 0 3
R e p l a c e s : I I --- D A M P 4 Z C --- 0 2