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JOHNSON CONTROLS
39
SECTION 3 - OPTIVIEW™ CONTROL CENTER FUNCTIONS AND NAVIGATION
FORM 161.01-OM1
ISSUE DATE: 6/8/2018
3
DISPLAY ONLY FIELDS
FIELD/LED NAME
DESCRIPTION
Purge Coil Temperature
Displays the Purge Coil temperature.
Condenser Saturation Temperature
Displays the Condenser Saturation Temperature calculated from the Condenser
Pressure.
Condenser Refrigerant Temperature
Displays the Condenser Refrigerant temperature.
User Purge Count
To aid in troubleshooting, the user may reset the Purge Count to zero and then
monitor the number of purges over a period of time.
Total Purge Count
Displays the date and time that the User Purge Count was reset to zero.
Enhanced State Count
Displays the Enhanced Purge state Count since chiller commissioning.
PROGRAMMABLE
PROGRAMMABLE
BUTTON
ACCESS LEVEL
DESCRIPTION
Purge Mode:
Standard
Operator
Purge Inlet Solenoid is Open and the Purge Pump Solenoid is Closed. When the
chiller runs, if the Condenser Saturation Temperature is > (Condenser Refriger-
ant Tempe Condenser Temperature Offset) [Range 0.5°F to 2.5°F (-17.5
°C to -16.4 °C), Default= 1.0°F (-17.2 °C)] the Purge Compressor will run for
1 hour. If the Purge Suction Temperature drops below -7°F (-21.7 °C) a purge
cycle will be initiated.
Purge Mode:
Enhanced
Operator
Purge Inlet Solenoid is Open and the Purge Pump Solenoid is Closed. When the
chiller runs, if the Condenser Saturation Temperature is > (Condenser Refriger-
ant Tempe Condenser Temperature Offset) [Range 0.5°F to 2.5°F (-17.5
°C to -16.4 °C), Default= 1.0°F (-17.2 °C)] the Purge Compressor will run for
1 hour. If the Purge Suction Temperature drops below -7°F (-21.7 °C) a purge
cycle will be initiated. If the Purge Suction Temperature does not drop below -7°F
(-21.7 °C), the Purge Compressor will turn off for 4 hours. After the 4 hour wait
the Purge Compressor will be run for another hour. If the Purge Suction Temp
drops below -7°F (-21.7 °C) a purge cycle will be initiated. If it does not drop then
the Purge Compressor will again be shut off for a 4 hour wait. If no purges are
needed after 3 four hour purge cycles, the Purge Compressor will stay off for 24
hours. If no purges occur after 7 twenty-four hour purge cycles then the Purge
Time Interval will increase to 1 week and remain there indefinitely.
If at any time during the enhanced mode of operation the Purge Suction Tem-
perature drops below -7°F (-21.7 °C) a purge cycle will be initiated and the purge
cycle time will revert back to the four hour off time.
NAVIGATION
NAVIGATION
BUTTON
DESCRIPTION
Home
Returns user to HOME Screen
Condenser
Returns user to CONDENSER Screen
Содержание YZ MODEL A
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