8.9 SERVICE MODE: UNIT SETUP
The Service Mode allows programming unit
Catastrophic failure of chiller compo- nents can occur if the
Whenever an EPROM is changed, the programmed values should be record- ed prior to removing the old EPROM. These values should then be checked and programmed into the micro when the new EPROM is installed.
Setup values may be checked in the Service Mode by pressing the PROGRAM, 5144, and ENTER keys. Table 5 lists the value and the program range that will be accepted.
FORM
TABLE 5 – SERVICE MODE
PROGRAMMABLE VALUES
SETUP MODE VALUE | PROGRAMMABLE RANGE |
Refrigerant Type | |
Optimized or | |
Unit Type | YCAS or YCWS ** |
Heat Recovery Unit | Enabled or Disabled *** |
Sys 1 100% Full Load Amps | 75 to 500 Amps * |
Sys 2 100% Full Load Amps | 75 to 500 Amps * |
Sys 1 Motor Protector Input | 1.0 to 5.0 volts * |
Sys 2 Motor Protector Input | 1.0 to 5.0 volts * |
Oil Cooling On | 167 to 203 ºF |
| 180 ºF default **** |
Oil Cooling Diff | 9 to 18 ºF |
| 9 ºF default **** |
Discharge Cooling On | 176.0 to 239.0 ºF |
| 212.0 ºF default |
Discharge Cooling Diff | 7.2 to 27.0 ºF |
| 18 ºF default |
Data Logging Mode | OFF or ON |
Data Logging Timer | 6 to 60 seconds |
Sys 1 Operating Hours | 0 to 99,999 |
Sys 2 Operating Hours | 0 to 99,999 |
Sys 1 Starts | 0 to 99,999 |
Sys 2 Starts | 0 to 99,999 |
Clear History Buffer | YES or NO |
NOTE:
*See Table 6 or 7 for programming system 100% Full Load Amps and System Motor Protector input volt- age. Also assure that the correct number of wires per phase pass through each C.T. The C.T. is built internally into the 2ACE motor protector.
**The chiller must always be programmed for YCAS
***Heat recovery must always be disabled.
****Oil and discharge cooling is only utilized on spe- cial low temp chiller.
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