Economizer Capacity Control Setpoints Screen - York YK-EP Operation And Maintenance Manual

Economizer capacity control setpoints screen

Figure 30: Economizer capacity control setpoints screen
This screen displays a view of the economizer capacity control setpoints and buttons. Service Level
Access is required to navigate to this screen.
Table 77: Adjustable
Field/LED
Access level
name
High
Head for
Service
Refrigerant
Flow
Refrigerant
Flow Criteria Service
at High Head
Low Head for
Refrigerant Service
Flow
Refrigerant
Flow Criteria Service
at Low Head
88
Description
Range 5 to 150 PSID, Default 64 PSID
This displays the high head setpoints at which the economizer
will activate. These points can be changed according to when the
operator wishes the economizer to start operating.
Range 100 to 50000 CFM, Default 6000 CFM
Displays the refrigerant flow in CFM that is where the economizer
will activate in the high head condition.
Range 5 to 150 PSID, Default 30 PSID
This displays the low head setpoints at which the economizer
will activate. These points can be changed according to when the
operator wishes the economizer to stop operating.
Range 100 to 50000 CFM, Default 8200 CFM
Displays the refrigerant flow in CFM that is where the economizer
will activate in the low head condition.
YK-EP Style B Centrifugal Chiller