82
• fourth bit = 1 indicates that the alarm should be read and
processed by an alarm printer interface (an optional mod-
ule) or ServiceLink™ 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. 41.
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 Build-
ing Supervisor.
Perform a Control Test — Check the safety controls
status by performing an automated control test. Press the
STOP button on the ICVC to place the chiller in STOP mode.
The CONTROL TEST screen can only be accessed when the
chiller is in STOP mode. Access the CONTROL TEST table
and select a test to be performed function (Table 15).
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
voltage should be within ±10% of rating plate value. The com-
pressor can be put in OFF mode by pressing the STOP push-
button on the ICVC. Each test asks the operator to confirm the
operation is occurring and whether or not to continue. If an er-
ror occurs, the operator can try to address the problem as the
test is being done or note the problem and proceed to the next
test.
Table 15 — Control Test Menu Functions
LEGEND
NOTE: During any of the tests, an out-of-range reading will have an asterisk
(*) next to the reading and a message will be displayed if the diffuser control is
enabled.
1
1
0
1
0
0
0
0
Alarm Printer Interface Module
Autodial Gateway
Local Building Supervisors(s)
or ComfortWORKS
unused
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:
NOTE: If your CCN does not contain ComfortWORKS® controls or
a 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. 41 — Alarm Control and Alarm Routing
a19-1627
TESTS TO BE
PERFORMED
DEVICES TESTED
1. CCM Thermistors Entering Chilled Water
Leaving Chilled Water
Entering Condenser Water
Leaving Condenser Water
Evap Refrig Liquid Temp
Comp Discharge Temp
Comp Thrust Brg Temp
Oil Sump Temp
Comp Motor Winding Temp
Spare Temperature 1
Spare Temperature 2
Remote Reset Sensor
2. CCM Pressure
Transducers
Evaporator Pressure
Condenser Pressure
Oil Pump Delta P
SRD Delta P
SRD Rotating Stall
Chiled Water Delta P
Condenser Water Delta P
Transducer Voltage Ref
3. Pumps Oil Pump — Confirm Delta P
Chilled Water — Confirm flow and Delta
P
Condenser Water — Confirm flow and
Delta P
4. Discrete Outputs Oil Heater Relay
Hot Gas Bypass Relay
Tower Fan Relay Low
Tower Fan Relay High
Alarm Relay
Shunt Trip Relay
5. IGV and SRD
Actuator
Open/Close
Guide vanes and diffuser will both move.
The relative movement during Control
Test does not apply to operation. During
operation, guide vane and diffuser are
controlled independently.
Earlier software versions:
If present, split ring diffuser will operate in
coordination with the guide vanes per
configured schedule.
6. Head Pressure
Output
Increase/Decrease 4-20 mA output
7. Diffuser Actuator Open/Close (independent of guide
vanes)
8. Pumpdown Lockout When using pumpdown/lockout,
observe freeze up precautions when
removing charge:
Instructs operator which valves to close
and when.
Starts chilled water and condenser water
pumps and confirms flows.
Monitors
Evaporator pressure
Condenser pressure
Evaporator temperature during
pumpout procedures
Turns pumps off after pumpdown.
Locks out compressor.
9. Terminate Lockout Starts pumps and monitors flows.
Instructs operator which valves to
open and when.
Monitors
Evaporator pressure
Condenser pressure
Evaporator temperature during
charging process
Terminates compressor lockout.
10. Guide Vane
Calibration
Automatic, displays guide vane position
signal voltage. This test is required
before first start-up with new actuator,
new controller, or new software.
Calibrates guide vane input on CCM.
CCM — Chiller Control Module
IGV — Inlet Guide Vane
SRD — Spilt Ring Diffuser
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