Heat Recovery/Head Pressure Control Screen - York YK Style H Operation Manual

Heat recovery/head pressure control screen

Figure 29: Heat recovery/head pressure control screen
This screen displays all parameters related to the Heat Recovery feature. It also allows for setting of
the setpoints applicable to this feature.
The Heat Recovery/Head Pressure Control feature is an optional feature and if so equipped, it
must be enabled on the Setup Screen. Once enabled, this screen is accessible from the Condenser
Screen. If the Head Pressure Control feature is also enabled, there is no separate Head Pressure
Control Screen. Rather, the Head Pressure Control parameters and setpoints appear on this screen.
The screen above is shown with Head Pressure Control enabled in the Local Control Source mode.
Heat Recovery cannot be used simultaneously with Heat Pump Duty. When Heat Pump Duty is
enabled, Heat Recovery is automatically disabled and locked.
When Heat recovery is enabled, the condenser flow animation will show flow when either the
Condenser Liquid Flow Switch or the Heating Condenser Liquid Flow Switch says flow is present.
When Heat Recovery is disabled, the condenser flow animation is based on the standard Condenser
Flow Switch. This screen also serves as a gateway to controlling the Refrigerant Level, Heat
Recovery and Head Pressure Control.
A complete explanation of the Heat Recovery feature is contained in OptiView Control Center – Service
Instructions (Form 160.76-M1).
Note: Requires a login access level of SERVICE. Service Technicians must refer to the OptiView
Control Center - Service Instructions (Form 160.76-M1) for operation instructions and explanation
of all programmable setpoints and displayed values.
Model YK Style H Centrifugal Liquid Chillers with OptiView Control Center 39