V/I Inputs; Outputs; Replacing Defective Processor Modules; Installation - Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual

ANALOG OUT
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SIO
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SIO
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SW2 V/I INPUT
CONFIGURATION
DIP SWITCH 1
MUST BE "OFF"

V/I INPUTS

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STAT
Replacing Defective Processor Modules —
The module replacement part number is printed on a small
label on the rear of the ICVC module. The chiller model and
serial numbers are printed on the chiller nameplate located on
an exterior corner post. The proper software is factory-installed
by Carrier in the replacement module. When ordering a
replacement chiller visual control (ICVC) module, specify the
complete replacement part number, full chiller model number,
and chiller serial number. The installer must configure the new
module to the original chiller data. Follow the procedures
described in the Software Configuration section on page 64.
Electrical shock can cause personal injury. Disconnect all
electrical power before servicing.

INSTALLATION

1. Verify the existing ICVC module is defective by using the
procedure described in the Troubleshooting Guide
section, page 82, and the Control Modules section,
page 100. Do not select the ATTACH TO NETWORK
DEVICE table if the ICVC indicates a communication
failure.
2. Data regarding the ICVC configuration should have been
recorded and saved. This data must be reconfigured into
the new ICVC. If this data is not available, follow the
procedures described in the Software Configuration
section. If the module to be replaced is functional, config-
urations may also be copied manually. The data sheets on
pages CL-3 and CL-11 are provided for this purpose.
Default values are shown so that only deviations from
these need to be recorded.
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DISCRETE

OUTPUTS

COMM THERMISTORS
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Fig. 45 — Chiller Control Module (CCM)
SW1 SIO ADDRESS
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DIP SWITCH SET
DISCRETE
ALL TO "OFF"
OUTPUTS
DIFF PRESSURE
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If a CCN Building Supervisor or Service Tool is avail-
able, the module configuration should have already been
uploaded into memory. When the new module is
installed, the configuration can be downloaded from the
computer.
Any communication wires from other chillers or CCN
modules should be disconnected to prevent the new
ICVC module from uploading incorrect run hours into
memory.
3. Record values for the TOTAL COMPRESSOR STARTS,
SERVICE ONTIME and the COMPRESSOR ONTIME
from the MAINSTAT screen on the ICVC.
4. Power off the controls.
5. Remove the old ICVC.
6. Install the new ICVC module. Turn the control power
back on.
7. The ICVC now automatically attaches to the local
network device.
8. Set the current time and date in the SERVICE/TIME
AND DATE screen. Set the CCN Bus and Address in the
SERVICE / ICVC CONFIGURATION screen. Press the
alarm RESET softkey (from the default screen). Upload
via Service Tool or manually reenter all non-default
configuration values. (Refer to pages CL-3 through
CL-11.) If the correct VFD Configuration values are
displayed in the VFD_CONF table when that table is
viewed, simply press EXIT then SAVE to reload all
of them. Use Service Tool or manually reenter TOTAL
COMPRESSOR STARTS, SERVICE ONTIME and
COMPRESSOR ONTIME. If forced using Service Tool,
101
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24 VAC
PRESSURE
a19-1724
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