Carrier 19XL specifications Installation, Switch Options Setting Module

Terminal block connections are provided on the options modules. All sensor inputs are ®eld wired and installed. Options module number 1 can be factory or ®eld-installed. Options module 2 is shipped separately and must be ®eld installed. For installation, refer to the unit or ®eld wiring diagrams. Be sure to address the module for the proper mod- ule number (Fig. 43) and to con®gure the chiller for each feature being used.

SWITCH	OPTIONS	OPTIONS
SETTING	MODULE 1	MODULE 2
S1	6	7
S2	4	2

Fig. 43 Ð Options Module

Replacing Defective Processor Modules Ð The replacement part number is printed in a small label on front of the PSIO module. The model and serial numbers are printed on the unit nameplate located on an exterior corner post. The proper software is factory-installed by Carrier in the replacement module. When ordering a replacement proces- sor module (PSIO), specify complete replacement part number, full unit model number, and serial number. This new unit requires recon®guration to the original chiller data by the installer. Follow the procedures described in the Set Up Chiller Control Con®guration section on page 50.

Electrical shock can cause personal injury. Disconnect all electrical power before servicing.

INSTALLATION

1.Verify that the existing PSIO module is defective by us- ing the procedure described in the Troubleshooting Guide section, page 66, and Control Modules section, page 78. Do not select the Attach to Network Device table if the LID displays communication failure.

2.Data regarding the PSIO con®guration should have been recorded and saved. This data will have to be recon- ®gured into the LID. If this data is not available, follow the procedures described in the Set Up Chiller Control Con®guration section.

If a CCN Building Supervisor or Service Tool is present, the module con®guration should have already been uploaded into memory; then, when the new module is installed, the con®guration can be downloaded from the computer.

Any communication wires from other chillers or CCN modules should be disconnected to prevent the new PSIO module from uploading incorrect run hours into memory.

3.To install this module, ®rst record the TOTAL COM- PRESSOR STARTS and the COMPRESSOR ONTIME from the Status01 table screen on the LID.

4.Power off the controls.

5.Remove the old PSIO. DO NOT install the new PSIO at this time.

6.Turn on the control power. When the LID screen re- appears, press the MENU softkey, then press the SERVICE softkey. Enter the password, if applicable. Move the highlight bar down to the ATTACH TO NET- WORK DEVICE line. Press the SELECT softkey. Now, press the ATTACH softkey. The LID will dis-

play ``UPLOADING TABLES, PLEASE WAIT'' and then display ``COMMUNICATIONS FAILURE.'' Press

the EXIT softkey.

7.Turn the control power off.

8.Install the new PSIO module. Turn the control power back on.

9.The LID will now automatically upload the new PSIO module.

10.Access the Status01 table and move the highlight bar down to the TOTAL COMPRESSOR STARTS line. Press

the SELECT softkey. Increase the value to indicate the correct starts value recorded in Step 2. Press the ENTER softkey when you reach the correct value. Now, move the highlight bar to the COMPRESSOR ON- TIME line. Press the SELECT softkey. Increase the run hours value to the value recorded in Step 2. Press the ENTER softkey when the correct value is reached.

11.Complete the PSIO installation. Following the instruc- tions in the Start-up, Operation, and Maintenance manual, input all the proper con®gurations such as time, date, etc. Re-calibrate the motor amps and check the pres- sure transducer calibrations. PSIO installation is now complete.

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