Configure Diffuser Control If Necessary; Modify Equipment Configuration If Necessary; Perform A Control Test - Carrier AquaEdge 19XRV series Operation, Maintenance And Installation Manual

greater than 60), then perform this step. Do not change
SURGE LINE SHAPE FACTOR from the value speci-
fied by Chiller Builder (ECAT). Reset SURGE/HGBP
DELTA TSMIN and SURGE/HGBP DELTA TSMAX to
the value specified by Chiller Builder (ECAT). De-
crease SURGE/HGBP DELTA TSMIN and SURGE/
HGBP DELTA TSMAX in steps of 1° F up to 5 times.
Monitor chiller for surge.
CONFIGURE DIFFUSER
SARY — If the compressor is equipped with a variable
diffuser, (size 4 or 5 compressor) access the SETUP2 screen.
Scroll to DIFFUSER CONTROL and press the
softkey. Compare the diffuser and guide vane values (GUIDE
VANE 25% LOAD PT, GUIDE VANE 50% LOAD PT, GUIDE
VANE 75% LOAD PT, DIFFUSER 25% LOAD POINT,
DIFFUSER 50% LOAD POINT, DIFFUSER 75% LOAD
POINT) to the values located on the label inside the control
panel above the ICVC. See Fig. 14.
Compressors with variable diffuser control have actuators
tested and stamped with the milliamp (mA) value that results in
100% actuator rotation. This value is configured on the SET-
UP2 screen. It is labeled DIFFUSER FULL SPAN mA.
Further adjustments can be made if response to surge pre-
vention or protection is not functioning as desired. VFD GAIN
and VFD INCREASE STEP can be adjusted to allow for more
aggressive changes in speed when surge prevention or protec-
tion is active.
MODIFY EQUIPMENT CONFIGURATION IF NECES-
SARY — The EQUIPMENT SERVICE table has screens to
select, view, or modify parameters. Carrier's certified drawings
have the configuration values required for the jobsite. Modify
these values only if requested.
EQUIPMENT SERVICE Screen Modifications — Change
the values on these screens according to specific job data. See
the certified drawings for the correct values. Modifications can
include:
• Chilled water reset (CHW SETPT RESET VALUE)
• Entering chilled water control (ECW CONTROL OPTION)
• 4 to 20 mA demand limit (DEMAND LIMIT AT 20 mA)
• AUTO RESTART OPTION (Enable/Disable)
• REMOTE CONTACT OPTION (Enable/Disable)
Owner-Modified CCN Tables — The following EQUIP-
MENT CONFIGURATION screens are described for reference
only.
OCCDEFCS — The OCCDEFCS screen contains the Local
and CCN time schedules, which can be modified here or on the
SCHEDULE screen as described previously.
HOLIDAYS — From the HOLIDAYS screen, the days of the
year that holidays are in effect can be configured. See the
holiday paragraphs in the Controls section for more details.
BRODEF — The BRODEF screen defines the start and end of
daylight savings time. By default this feature is enabled. Enter
the dates for the start and end of daylight savings if required
for your location. Note that for Day of Week, 1 represents
Monday. Start Week and Stop Week refer to the instance of the
selected Day of Week during the selected month and year. To
disable the feature, change "Start Advance" and "Stop Back"
times to 0 (minutes). In the BRODEF table the user may also
identify a chiller as the time broadcaster for a CCN network.
There should be only one device on a CCN network which is
designated as the Time Broadcaster.
ALARM ROUTING — This is in the table SERVICE/ EQUIP-
MENT CONFIGURATION/NET_OPT under the heading
Alarm Configuration. Alarm Routing consists of an 8-bit
binary number. Only bits 1, 2, and 4 (counting from the left,
first) are used. The others do not matter. The bits can be set by
any device which can access and change configuration tables.
CONTROL IF NECES-
ENABLE
If any of these 3 bits is set to 1, the controller (ICVC, for exam-
ple) will broadcast any alarms which occur.
• first bit = 1 indicates that the alarm should be read and pro-
cessed by a "front end" device, such as a ComfortWORKS
device.
• second bit = 1 indicates that the alarm should be read and
processed by a TeLINK™ or Autodial Gateway module.
• fourth bit = 1 indicates that the alarm should be read and
processed by an alarm printer interface (an optional mod-
ule), ServiceLink™, or DataLINK™ modules.
The Re-Alarm time is a time period after which, if a preex-
isting and previously broadcast alarm has not been cleared, it
will be rebroadcast on the CCN network. See Fig. 45.
Other Tables — The CONSUME, NET_OPT, and RUN-
TIME screens contain parameters used with a CCN system.
See the applicable CCN manual for more information on these
screens. These tables can only be defined from a CCN
Building Supervisor.
ALARM CONTROL
ALARM ROUTING
This decision determines which CCN system elements will receive
and process alarms sent by the CSM. Input for the decision consists
of eight digits, each of which can be set to either 0 or 1. Setting a
digit to 1 specifies that alarms will be sent to the system element
that corresponds to that digit. Setting all digits to 0 disables alarm
processing. Digits in this decision correspond to CCN system
elements in the following manner:
Alarm Printer Interface Module
Autodial Gateway
Local Building Supervisors(s)
or ComfortWORKS
a19-1627
NOTE: If your CCN does not contain ComfortWORKS
Building Supervisor, Autodial Gateway, or APIM to serve as an
alarm acknowledger, set all digits in this decision to 0 in order to
prevent unnecessary activity on the CCN Communication Bus.
Allowable Entries 00000000 to 11111111
0 = Disabled, 1 = Enabled
Default Value 10000000
Fig. 45 — Alarm Control and Alarm Routing
Perform a Control Test —
status by performing an automated control test. Access the
CONTROL TEST table and select a test to be performed
function. See Table 14.
The Automated Control Test checks all outputs and inputs
for function. In order to successfully proceed with the controls
test, the compressor should be off, no alarms showing, and volt-
age should be within ±10% of Nameplate value. The compres-
sor can be put in OFF mode by pressing the STOP push button
on the ICVC. Each test asks the operator to confirm the opera-
tion is occurring and whether or not to continue. If an error oc-
curs, the operator can try to address the problem as the test is
being done or note the problem and proceed to the next test.
NOTE: Enter guide vane calibration to calibrate guide vane
actuator feedback potentiometer input on CCM (Plug J4 upper
terminals 9 and 10).
NOTE: If during the control test, the guide vanes do not open,
verify the low pressure alarm is not active. (An active low
pressure alarm causes the guide vanes to close.)
NOTE: The oil pump test will not energize the oil pump if
cooler pressure is below –5 psig (–35 kPa).When the control
test is finished or the
and the CONTROL TEST menu displays. If a specific auto-
mated test procedure is not completed, access the particular
control test to test the function when ready. The CONTROL
TEST menu is described in Table 14.
77
1 1 0 1 0 0 0
0
®
controls or a
Check the safety controls
softkey is pressed, the test stops,
EXIT
®
unused