Carrier Gen 2 Vvt Manual

							Zone Controller Reset ÐThe zone controller con-
stantly veri®es operation and the information it utilizes. When
it ®nds a fault in a speci®ed area, the zone controller resets
using the zone controller initialization display.
The zone controller will reset when it ®nds fault in the
following areas:
· The ability of the microprocessor to properly operate the
programs used by the zone controller is veri®ed to prevent
improper response to zone and system conditions.
· The level of power used by the zone damper (24 vac) and
by the zone controller (10 vdc) is checked to prevent im-
proper operation by micro-electronic components during
low power conditions.
· The ability of the zone controller to communicate with the
zone damper to prevent incorrect operation of the zone
damper.
Each piece of information received by the zone controller
is veri®ed to eliminate the use of incorrect data. Each por-
tion of information stored by the zone controller is veri®ed
to eliminate the use of incorrect data. When possible, system
communication and data storage faults are corrected by the
zone controller. When corrections cannot be made the
information is regarded as invalid and not utilized.
BROADCAST
The zone controller is part of a Carrier Comfort system.
As a part of the system, on the network, the zone controller
can request or receive broadcasts.
Broadcast Acknowledge ÐWhen the Broadcast
Acknowledge option is set to ON, the zone controller will
acknowledge any CCN (Carrier Comfort Network) broad-
cast. Every primary and secondary bus must have only one
broadcast acknowledger.
When the Broadcast Acknowledge option is set to OFF,
the zone controller will not acknowledge a CCN broadcast.
To set the option, con®gure category 9, option 1. Use the
left set point buttons to toggle the option ON or OFF. The
default is OFF.
Network Time Request ÐWhen the Network Time
Request option is set to ON, the zone controller will request
CCN time and date from the network. On every network,
there must be only one device requesting time.
When the Network Time Broadcast option is set to OFF,
the zone controller will not request time and date.
To set the option, con®gure category 9, option 2. Use the
left set point buttons to toggle the option ON or OFF. The
default is OFF.
NOTE: This should only be required in stand-alone appli-
cations. In a typical system, the zone controller will receive
time from its associated monitor thermostat.
HOLIDAY SCHEDULES
The zone controller supports holiday scheduling. Eight-
een different holidays can be user-de®ned. Each holiday has
a start date (month and day) and a duration. When a user-
de®ned holiday occurs, the zone controller follows the holi-
day schedule de®ned in the occupancy periods.
To de®ne a holiday, advance to category 10. Each option
(holiday schedule) has 2 screens. The ®rst option screen shows
the month and day. The second option screen shows the
duration. The default values are 0 for each schedule. Pressthe enter button on the ®rst screen to modify the month and
day. The month will ¯ash. Use the left set point buttons to
scroll through the months. January is 1. February is 2, and
so on. The range of acceptable values is 0 to 12. Set the month
to 0 to disable the holiday schedule.
Once the month has been selected, press the enter button.
The day will ¯ash. Use the left set point buttons to scroll
through the days. The range of acceptable values is 0 to 31.
Set the day to 0 to disable the holiday schedule. Press enter
again to return to the option selection screen. Toggle to the
second screen of option 10.1 by pressing the upper left set
point button. Press the enter button. The duration will ¯ash.
The duration is the number of days the holiday schedule will
be active. The range of acceptable values is 0 to 99. Set the
value to 0 to disable the holiday schedule.
Options 10.2 through 10.18 are con®gured in the same
manner.
NOTE: If the network time broadcaster has a con®gured holi-
day schedule, it will broadcast that the day is a holiday for
other CCN devices. The Comfort System thermostats will
ignore this information. In order to broadcast a global holi-
day, a global schedule broadcast must be used (schedules 65
to 99).
ALARM OPTIONS
The alarms options of the zone controller are responsible
for transmitting alarms on the CCN. A speci®ed device (such
as the Building Supervisor) on the CCN records the alarm
messages from all other devices and uses this data to pro-
duce alarm messages. The zone controller detects successful
transmission of the alarm and will retry if there is a com-
munication failure. If the alarm is successfully transmitted,
the zone controller will reset the alarm. The zone controller
will also re-transmit an alarm if the alarm persists.
Equipment Priority ÐThe Equipment Priority func-
tion tells the error recording device the priority of the device
that is sending the alarm. The priority determines which alarms
are shown ®rst and which alarms are deleted when the alarm
memory is full. To set the option, con®gure category 11,
option 1. The range is 0 to 9 where 9 is the highest priority.
The default value is 7 (zone controller priority).
It is recommended that this value not be changed. Equip-
ment damage can occur if low priority values are given
to high priority alarms.
Communication Failure Retry Time ÐThe Com-
munication Failure Retry Time option con®gures how long
the zone controller will wait before re-sending an alarm that
was not received by a device. The option is con®gured in
category 11, option 2. The range of acceptable values is 0 to
240 minutes. The default is 10 minutes. A value of 0 dis-
ables this function.
Re-Alarm Time ÐThe Re-Alarm Time option con®g-
ures how long the zone controller will wait before re-
sending an alarm after the alarm message has been received
by a device. When the condition returns to normal, the alarm
will no longer be sent. The option is con®gured in category
11, option 3. The range of acceptable values is 1 to 255 min-
utes. The default is 30 minutes. A value of 255 disables
re-alarming.
21 
						

							Alarm Routing Control ÐThe Alarm Routing Con-
trol option determines which devices on the CCN will re-
ceive and process the alarm information. This option cannot
be con®gured from the monitor thermostat. The default value
is 00000000. A value of 10000000 sends alarms to the Build-
ing Supervisor. A value of 01000000 sends alarms to the Auto-
Dial gateway. A value of 00010000 sends alarms to the printer
interface. This value sends/marks alarms for building super-
visors autodial gateways. A value of 00000000 disables all
alarms going out on the CCN. The option is con®gured through
Carrier network access software.
Alarm System Name ÐThe Alarm System Name
option identi®es the alarm system on the CCN. This option
cannot be con®gured from the zone controller. The default
name is 33CSZC. The option is con®gured through Carrier
network access software.
ALARM DESCRIPTION
This section describes the major alarm types that are avail-
able within the system. The alarm types are: space tempera-
ture alarm (comfort trend) and IAQ status alarm.
The section describes each alarm in detail: what control-
lers it works with; the sensors required for the alarm to be
activated; and how the alarm is con®gured, disabled, and nor-
malized. The description provides information on how the
alarm is applied and the necessary hardware required for proper
operation.
Space Temperature Alarm (Comfort Trend) Ð
See Table 6 for Space Temperature Alarm Speci®cations.
Table 6 Ð Space Temperature Alarm
FUNCTION DESCRIPTION
ControllersMonitor Thermostat/Zone Controller
Sensor RequiredNone (Space Temperature Sensor
is in zone controller)
Sensor WiringNone, Sensor Integral to Zone
Controller
InputComfort Trend Demand
Comfort Trend Time Limit
OutputSE01 Comfort Trend Error (Space
Temperature Alarm)
Category/Option7.3 (Comfort Trend Demand)
7.4 (Comfort Trend Time Limit)
Con®guration Values7.3 Ð Range0Fto25.5 F
7.4 Ð Range 1 to 255 minutes
Con®guration Increments7.3 Ð 0.1É F
7.4 Ð 1 minute
Associated FunctionsNone
OPERATION Ð A space temperature (Comfort Trend) alarm
indicates when the system is unable to maintain space tem-
perature comfort conditions. Space temperature alarms are
an indication that the HVAC system operation has difficulty
maintaining zone space temperature. The temperature de-
mand of the space or zone is the difference between the set
point (either heating or cooling) and actual space tempera-
ture of the zone.
When the demand of the zone exceeds the Comfort Trend
Demand value (category 7, option 3), the zone controller be-
gins to calculate the temperature trend of the zone. The tem-
perature trend is simply the real time ability of the space
to lower or reduce the temperature demand of the space. The
time is measured during the period when the temperature
trend does not show improvement, or indicates conditions
between set point and space temperature are getting worse.
When the length of time measured reaches the Comfort Trend
Time Limit value, a Space Temperature alarm is initiated.CONFIGURATION TO ACTIVATE ALARM Ð To acti-
vate a space temperature alarm, con®gure the Comfort Trend
Demand set point to any value except 0. Con®gure the Com-
fort Trend Time Limit set point.
CONFIGURATION TO NORMALIZE ALARM Ð The space
temperature alarm will automatically clear when the system
can properly condition the space. To remove any alarms, fol-
low the procedure to clear the alarm from the zone control-
ler and network using manual reset.
CONFIGURATION EXAMPLE
Occupied Space Cooling Set Point: 72 F
Occupied Space Heating Set Point: 68 F
Comfort Trend Demand: 4.5 F
Comfort Trend Time Limit: 7 minutes
The system is operating normally without alarm during
the cooling mode. The trend of the space temperature indi-
cates that the system is unable to keep the space within set
points, and space temperature rises to 76.5 F. The trend of
the space temperature is not improving, and temperature con-
ditions are getting worse for at least 7 minutes. At that time,
a space temperature (Comfort Trend) alarm (SE01) is initi-
ated. The alarm will automatically clear when the system
can properly maintain space temperature conditions within
the space.
The alarm is removed using the manual reset. The system
will not return to normal without being reset.
CLEARING THE ALARM FROM THE ZONE CONTROL-
LER Ð Space temperature alarms can be cleared or ``erased
from the system in three ways:
· Cycle power to the zone controller OFF, then ON.
· Reset the zone controller. Initiate a reset by switching the
Unit Reset option to the ON con®guration (Category 7,
Option 8).
· Switch the con®guration value for Comfort Trend De-
mand or the Comfort Trend Time Limit to zero, then back
to an acceptable range (category 7, options 3 or 4).
Indoor-Air Quality Status Alarm ÐRefer to
Table 7 for IAQ (indoor-air quality) alarm speci®cations.
OPERATION Ð When the CO
2level exceeds the preset level,
the sensor signals the zone controller. The zone controller
will wait until the IAQ Alarm Delay option (category 14,
option 4) has expired, then it will issue an SE10. The system
(if con®gured) will bring in fresh outdoor air to meet IAQ
requirements.
Table 7 Ð IAQ Status Alarm
FUNCTION DESCRIPTION
ControllersMonitor Thermostat, Zone Controller,
Bypass Controller
Sensor RequiredIAQ (CO
2) Sensor
Sensor WiringPins 6 and 7 of Relay Board or
Wire to Damper Board
InputClosed contact when level
exceeded.
OutputSE-10
Category/Option14.1 (System IAQ Participation)
14.2 (Local IAQ Sensor)
Con®guration Values14.1 Ð ON
14.2 Ð ON
Con®guration
IncrementsNot Applicable
Associated FunctionsNone
22 
						

							When the CO2level exceeds the preset level (factory
con®guration is 1000 ppm and cannot be changed without
optional software), the sensor signals the monitor thermo-
stat. The monitor thermostat energizes the indoor-fan motor
(if not already running). If the Auxiliary Relay has been con-
®gured for IAQ operation, the monitor thermostat energizes
the relay after the time delay on the ®rst IAQ alarm of the
day, or immediately on any other IAQ alarms. This is in-
tended for use with an economizer, but can be wired to an
exhaust fan or HRV (heat recovery ventilator). If used with
an economizer, the economizer moves to the minimum
position and the indoor fan circulates the air throughout the
occupied space.
The monitor thermostat has 3 lockout features which will
prevent system IAQ mode: if the outdoor humidity is too
high or the outdoor temperature is too high or too low.
When the monitor thermostat receives an IAQ alarm from
a bypass controller (or itself in monitor-only mode), it sends
all the zone controllers the system IAQ alarm.
When the IAQ starts, the economizer damper opens (if
con®gured) and the zone damper moves to the full open
position. This forces fresh outside air to enter the zone with
de®cient IAQ. When the IAQ level drops below the IAQ
set point, the economizer and zone dampers return to their
standard operating mode.
When the system is bringing in additional outside air, the
thermostat is reset 0 to 10É F (®eld-con®gured) above and
below the original set point to allow the outside air to cir-
culate before the heating or cooling mode is initiated. The
zone controller will display status when the system is in this
mode.
CLEARING THE ALARM Ð To clear a system error, use
the Unit Reset function. The Unit Reset function is in
category 7, option 8. The default is OFF. Use the left set
point buttons to set the option to ON. The zone controller
will reset all errors.
NETWORK ACCESSIBLE VARIABLES
When using network access software, the set point and
operation tables can be accessed. The variables in the tables
can be read, written, or forced to a certain value. The zone
controller point display table is shown in Table 8. Other net-
work software access tables are shown in Table 9.
Table 8 Ð Zone Controller Point Display Table
VARIABLE
DESCRIPTIONPOINT
NAMEREAD/WRITE
CAPABILITY
Zone TemperatureZT Yes
Duct TemperatureDT Yes
Outside-Air TemperatureOAT Yes
Zone DemandZDMD Read Only
Demand TypeDMDTYPE Read Only
OccupiedOCC Yes
Damper PositionDPOS Yes
Series Fan/
Parallel Heat Stage 1FN Yes
Series Heat Stage 1/
Parallel Heat Stage 2H1 Yes
Series Heat Stage/
Parallel Heat Stage 3H2 Yes
Exhaust Fan RelayAUX Yes
HVAC Usage MeterUMHVAC Yes
Override Usage MeterUMUO Yes
HVAC Override Usage MeterUMUOSM Yes
Air¯ow CFMCFM Read Only
Indoor Air Quality StatusIAQLOG Yes
Table 9 Ð Zone Controller Network Access Tables
TABLE
NAMETABLE
DESCRIPTION
33CSZCController ID
CONFIG1Con®guration Table 1
CONFIG2Con®guration Table 2
SERVICE1Service Table 1
SERVICE2Service Table 2
ZONESTATPoints Display Table
ALARMLOGMaintenance Table 1
SETPOINTSet Point Table
OCCPC01SOccupancy Supervisory Table
OCCPC01EMaintenance Table 2
HOLIDEFHoliday De®nition Table
ALARMDEFAlarm POC Table
OCCDEFMOccupancy De®nition Table
ALARMS01Alarm Text Table
HOLDY01SHoliday Schedule 01
HOLDY02SHoliday Schedule 02
HOLDY03SHoliday Schedule 03
HOLDY04SHoliday Schedule 04
HOLDY05SHoliday Schedule 05
HOLDY06SHoliday Schedule 06
HOLDY07SHoliday Schedule 07
HOLDY08SHoliday Schedule 08
HOLDY09SHoliday Schedule 09
HOLDY10SHoliday Schedule 10
HOLDY11SHoliday Schedule 11
HOLDY12SHoliday Schedule 12
HOLDY13SHoliday Schedule 13
HOLDY14SHoliday Schedule 14
HOLDY15SHoliday Schedule 15
HOLDY16SHoliday Schedule 16
HOLDY17SHoliday Schedule 17
HOLDY18SHoliday Schedule 18
BRODEFSBroadcast POC Table
BROCASTSBroadcast Table
TIMETime/Date Table
POC ÐProduct Outboard Control
TROUBLESHOOTING
This section contains information to assist in troubleshoot-
ing operating problems and errors associated with the zone
controller. The most common operating problems and types
of errors associated with the zone controller are:
· Operating Problems. No display or ¯ashing displays occur
when the zone controller is not receiving rated power or
has miswired connections.
· Zone Controller Communication Problems. Not display-
ing correct time of day or does not follow associated Sys-
tem Controller program schedule. Device Address not dis-
played during a communication check from a monitor
thermostat.
· Supplemental Heat Problems. The zone controller is not
energizing supplemental or auxiliary heating equipment.
· Hardware Failure (HF) Errors. These errors occur when
the zone controller detects a problem with one of its own
components.
· Storage Failure (SF) Errors. These errors occur when the
zone controller detects and replaces faulty data contained
within memory with factory selected default values.
· System Errors (SE). These errors occur when the zone con-
troller detects a zone operating problem or has a full usage
meter.
Operating problems other than those listed above may be
related to the Carrier network.
NOTE: For complete details on the con®guration of all af-
fected options, refer to the proper sections in this manual.
23 
						

							General Operating Problems
NO DISPLAY Ð If the zone controller display remains blank
after 24 vac power has been applied to the damper actuator,
it is an indication that power is not reaching the zone
controller.
At the damper actuator, check that 24 vac is being sup-
plied from the power transformer. Acceptable voltage range
is 22 to 30 vac.
The va requirements are:
· 20 va for dampers only. (No relay packs or pressure
sensors.)
· 25 va for dampers interfaced with a relay pack or a pres-
sure sensor.
· 30 va for dampers interfaced to both a relay pack and a
pressure sensor.
Check the wiring between the 24 vac transformer and the
damper actuator or replace the transformer as necessary.
At the zone controller wiring connector board, with the
zone controller connected, check for approximately 10 vdc
(steady) across the red and white wires from the damper
actuator.
Check the continuity of the 5-conductor wire running be-
tween the zone controller wiring connector board and the
damper actuator.
Check that the zone controller ribbon cable is properly
seated in the wiring connector board. Disconnect, then re-
connect the ribbon cable from the connector board. If the
zone controller display remains blank after the ribbon cable
is reconnected, use the ribbon cable wiring diagram on
page 27 to check the zone controller wiring connector block
and ribbon cable.
Try connecting different zone controllers. If a different zone
controller works, the other zone controller is faulty. Try con-
necting the zone controller at the damper actuator board. If
it works, the wiring from the damper actuator to the zone
controller is faulty.
At the damper actuator, with the zone controller con-
nected, check for approximately 10 vdc (steady) across the
white and red wires to the zone controller. If faulty, replace
the damper actuator.
BLINKING DISPLAY Ð If the zone controller display shows
a rotating zero, or 4 zeros that are constantly displayed, it is
an indication the zone controller is continuously going through
the power-up sequence and cannot enter normal operating
mode.
Check for any of the following conditions that would cause
the display to blink or constantly display rotating zeros:
· Low voltage from the 24 vac transformer. Acceptable volt-
age range is 22 to 30 vac.
· Unsteady 10 vdc across the red and white wires from the
damper actuator.
· The yellow or blue wire from the damper actuator to the
zone controller wiring connector board is broken or
disconnected.
· The zone controller ribbon cable is improperly installed or
defective.
· The zone controller wiring connector board is defective.
See diagram on page 27 for ribbon cable and wiring con-
nector block troubleshooting information.
· The zone controller or damper actuator is defective.
Zone Controller Communication Problems Ð
Most communication problems are associated with im-
proper con®guration of the system devices, faulty wiring, or
failure of a single device wired to the communication bus.
COMMON COMMUNICATION RELATED PROBLEMS
Ð The following are indications of communication related
problems:
· A zone controller does not correctly indicate equipment
fan operation, the current system mode, or time of day.
· During the communication check, the system controller
associated with the zone controller fails to verify commu-
nications with the zone controller.
· The zone controller operates continuously in unoccupied
or occupied modes, even though unoccupied program
or local unoccupied control functions are properly
con®gured.
COMMON CAUSES OF SYSTEM COMMUNICATION
PROBLEMS Ð The con®guration of the network is such
that one item can cause multiple problems, or one error can
cover up several problems. If a problem is found, correct it
and check the network for other communications problems
that may appear.
1. Check the device address of the zone controller. A zone
controller must have an address below the associated moni-
tor thermostat and within the controller scanning range.
See Table 10.
For additional information about addressing devices on
the network, refer to the Carrier Comfort Network Instal-
lation Instructions.
2. Check the con®guration of the communication related
options of the system controller and each device in
the problem system. Every device has one or more com-
munication related options that could be con®gured
incorrectly.
3. Check the zone controller mounting and cover plates for
protruding screw heads or bent interior standoffs.
Protruding screw heads on the rear mounting plate can
cause a short between the rear pins of the set point but-
tons. The zone controller can not communicate with the
system controller when the set point buttons are
depressed.
Bent interior standoffs could constantly press the set point
buttons and block the device from communicating.
4. Check the zone controller wiring connector board for the
correct network wire connections.
The red, green, and black wires must be in their proper
locations. The wiring connector block is labeled to indi-
cate the correct wiring connections. Use the ribbon cable
wiring diagram on page 27 to check for a faulty ribbon
cable, wiring connector board, or failed TVA (transient
voltage arrestor).
If the communication related problem still exists, a device
on the network could be defective or the communication bus
wiring may be faulty.
Table 10 Ð Controlling Device Scanning Range
CONTROLLING DEVICE MAXIMUM SCANNING RANGE*
33CSVM(T)-044 Device Addresses below its own
33CSVM(T)-1616 Device Addresses below its own
33CSVM(T)-3232 Device Addresses below its own
*Monitor-only mode. Subtract one from device address number if in
monitor mode.
24 
						

							Supplemental Heat Problems ÐWhen the zone
controller is interfaced to supplemental/auxiliary heating equip-
ment, use the following section to troubleshoot problems
related to the supplemental heat operation.
SUPPLEMENTAL HEAT (SUH) ANNUNCIATOR NOT
DISPLAYED Ð The zone controller does not activate supple-
mental heat upon 1.5É F demand (no SUH annunciator
displayed).
If the zone controller zone has a heating demand of 1.5É F
or more and the optional supplemental or auxiliary heat is
not energized, the problem could be one or a combination of
the following items:
1. Ensure the zone controller zone heating demand is equal
to or greater than 1.5É F.
2. Ensure the zone controller Zone Supplemental Heat op-
tion (category 6, option 1) is con®gured ON.
3. Ensure the zone controller Supplemental Heat Time Guard
has expired. Upon power up, reset, or after the supple-
mental heat has been deenergized, the length of Time Guard
is 2 minutes.
The Supplemental Heat Time Guard Override option
(category 6, option 3) may be used to override the time
guard to 30 seconds for one cycle. Activate the override
by setting the option to ON.
4. Ensure the zone controller is free of possible HF or SF
Errors that can lockout its ability to energize supplemen-
tal heat. HF and SF Errors will be displayed by the zone
controller if the Error Code Display function (category 7,
option 1) is con®gured ON.
5. Check the con®guration of the monitor thermostat asso-
ciated with the zone controller. The monitor thermostat
has one or more options that have the ability to lockout
the zone controller supplemental/auxiliary heat.
The monitor thermostat Heating Lockout Temperature set
point should be set correctly. For additional information
refer to the monitor thermostat installation and operating
instructions.
SUPPLEMENTAL HEAT (SUH) ANNUNCIATOR DIS-
PLAYED Ð The zone controller SUH annunciator is ON,
but the supplemental heat source is not energized.Check the associated LEDs on the zone controller relay
pack. Perform the correct procedure.
LED Not Lit Ð The zone controller SUH annunciator is ON
but the LED on the relay pack is not lit. See Fig. 13
and 14.
1. At the damper actuator, unplug the relay pack and check
the voltages between the damper output PIN 1 (common)
and PIN 5 (H1). There should be approximately 7.5 to
9.5 vdc (steady). If the zone controller zone demand is
equal or greater than 2.0É F, the voltage between PIN 1
(common) and both PIN 5 (H1) and PIN 6 (H2) should
be the same. If not, replace the damper actuator circuit
board.
2. At the damper actuator, with the relay pack plugged in,
check the voltages across the relay pack input connector
plug. Voltages should read approximately 4 to 6 vdc (steady)
between the black wire and the appropriate relay pack
input wire. If not, replace relay pack.
LED is Lit Ð The zone controller SUH annunciator is ON,
the LED on the relay pack is lit, but the corresponding equip-
ment stage is not energized. See Fig. 13 and 14.
1. Check the AC voltage across the relay board common (red)
and any deenergized relay (H2 or H3/FAN in Fig. 14).
The voltage should read 24 vac. If not, check for wiring
error.
2. Check the AC voltage across the relay board common (red)
and any suspect relay board output (H1 in Fig. 14). The
voltage should read near zero (
						

							Fig. 13 Ð Damper Actuator Relay
Fig. 14 Ð Relay Pack Wiring
26 
						

							Ribbon Strip
Metal PinsCorresponding wire
connected to
Terminal Block
``TOP 1st Pin SBO +
2nd Pin Red
3-Wire Cable
Communication Bus 3rd Pin Black
4th Pin Green
5th Pin SBO-
6th Pin White
7th Pin Red
5-Wire Cable
to Damper or
Single Zone
Relay Pack 8th Pin Blue
9th Pin Yellow
10th Pin Green
11th Pin Red (RS+)
``BOTTOM 12th Pin Black (RSþ)
}
}
LEGEND
SBO ÐSetback Override
TVA ÐTransient Voltage Arrestor
NOTES:
1. By checking continuity on ribbon strip pins, continuous or intermittent problems with
the ``connector block (i.e., bad or cracked solder joints or tracings) can be found.
2. Check continuity between the communication bus wiring connector block terminals
(red and black) and the ribbon strip SBOþ termination. If there is continuity, the TVA
has failed.
Fig. 15 Ð Ribbon Cable and Connector Block Wiring
27 
						

							INDEX
Access Security Level, 7
Alarm Description, 22
Alarm Options, 21
Alarm Routing Control, 22
Alarm System Name, 22
Alternate Information Display, 5
Associated Control System Mode, 12
Blinking Display, 24
Broadcast, 21
Broadcast Acknowledge, 21
Cannot Detect Closed Damper, 19
Cannot Detect Open Damper, 19
Comfort Trend Error, 17
Common Causes of System Communication Problems, 24
Common Communication Related Problems, 24
Communication Failure Retry Time, 21
Computer Con®guration, 5
Con®guration, 4
Counterclockwise Open Damper Modulation, 13
Damper Circuit Board Installation, 2
Damper Control, 12
Damper Interface, 12
Damper Modes, 12
Damper Size, 13
Damper Ventilation Air¯ow Position, 12
Device Address, 7
Device Bus Number, 7
Diagnostics, 17
Display Freeze, 5
Duct (Supply Air) Temperature Sensor, 10
Duct Temperature Sensor Calibration, 10
Duct Temperature Sensor Out of Range, 20
Equipment Priority, 21
Error Code Display, 17
Fan Powered Mixing Box, 16
General, 2
General Operating Problems, 24
Hardware A/D Failure, 20
Hardware Failure (HF) Errors, 19
Hardware NOVRAM Failure, 20
Holiday Schedules, 21
HVAC Usage Meter, 16
Hydronic Heat, 16
Indoor-Air Quality Alarm Delay, 12
Indoor-Air Quality Exceeded Limit Error, 18
Indoor-Air Quality Maximum Space
Temperature Reset, 11
Indoor Air Quality Mode, 12
Indoor-Air Quality Sensor, 11
Indoor-Air Quality Sensor Installation, 3
Indoor-Air Quality Status Alarm, 22
Installation, 2
Local IAQ Sensor, 11
Local Mode, 12
Manual Con®guration, 4
Maximum Air¯ow Set Point, 13
Maximum Damper Position, 12
Meter Full Error, 18
Metering, 16
Minimum Air¯ow Set Point, 13
Minimum Damper Position, 12
Network Accessible Variables, 23Network Time Request, 21
No Display, 24
Occupancy Schedule Mode, 8
Occupancy Schedules, 8
Occupied Mode Operation, 7
Occupied Set Point Limiting, 8
Occupied Set Points, 7
Override Usage Meter, 16
Position Damper, 11
Pressure Dependent Damper Modulation, 13
Pressure Independent Damper Modulation, 13
Pressure Independent Operation, 14
Pressure Sensor, 10
Pressure Sensor Calibration, 10
Pressure Sensor Out of Range, 20
Pressure Sensor Re-Zero, 11
Programming Schedules Using Software, 8
Provide Power To Damper Circuit Board, 4
Re-Alarm Time, 21
Remote Room Temperature Sensor, 10
Remote Room Sensor Out Of Range, 20
Remote Room Temperature Sensor Calibration, 10
Rotating Display, 5
Schedule Number, 9
Sensors, 9
Space Temperature Alarm (Comfort Trend), 22
Start-Up, 7
Storage Failure (SF) Errors, 18
Supplemental Heat, 14
Supplemental Heat Damper Factor, 15
Supplemental Heating Damper Modulation, 15
Supplemental Heat Interface, 15
Supplemental Heat Lockout Override, 16
Supplemental Heat Operation, 15
Supplemental Heat Override Usage Meter, 16
Supplemental Heat Problems, 25
Supplemental Heat Time Guard, 15
Supplemental Heat Time Guard Override, 15
System Errors (SE), 17
System IAQ Participation, 11
System Status Display, 5
Troubleshooting, 23
Unoccupied Mode Operation, 8
Unoccupied Override, 9
Unoccupied Override Time Limit, 9
Unoccupied Set Points, 8
Velocity Pressure Probe Calibration, 11
Velocity Pressure Probe Gain, 11
Wiring Connections, 2
Wiring Requirements, 2
ZD/RD Actuator, 13
Zone Controller Communication Problems, 24
Zone Controller Display, 5
Zone Controller Placement, 2
Zone Controller Reset, 21
Zone Controller Wiring, 25
Zone Supplemental Heat, 15
Zone Temperature Monitoring, 9
Zone Temperature Sensor, 9
Zone Temperature Sensor Calibration, 9
Zone Temperature Sensor Out of Range, 19
Copyright 1997 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, speci®cations or designs without notice and without incurring obligations.Book 1 4
Tab 11a 13aPC 111 Catalog No. 533-308 Printed in U.S.A. Form 33CS-7SI Pg 28 3-97 Replaces: VVT-2SI