Head Pressure Control Screen; Figure 10 - Head Pressure Control Screen - York YK-EP B Operation & Maintenance Manual

SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION

FIGURE 10 - HEAD PRESSURE CONTROL SCREEN

OVERVIEW
This screen displays all parameters related to the Head
Pressure Control feature. It also allows for setting of
the setpoints applicable to this feature.
If equipped with this optional feature, it must be en-
abled on the SETUP Screen. Once enabled, this screen
is accessible from the CONDENSER Screen.
The condenser water flow animation will show flow
when the Condenser Liquid Flow Switch senses flow
is present.
A complete explanation of the Head Pressure Control
feature are explained in the OptiView Control Center
Service Manual.
Requires a login access level of SERVICE.
34

HEAD PRESSURE CONTROL SCREEN

DISPLAY ONLY
Entering Condenser Liquid Temperature
Displays the temperature of the liquid as it enters the
standard condenser tube bundle.
Leaving Condenser Liquid Temperature
Displays the temperature of the liquid as it leaves the
standard condenser tube bundle.
Head Pressure
Displays the pressure difference between the condens-
er and evaporator (condenser minus evaporator).
Head Pressure Setpoint
Displays the active Head Pressure Setpoint to which
the head pressure is being controlled.
Control Valve Command
Displays the position command being sent to the Con-
trol Valve. Displayed over the range of 0.0% to 100%.
FORM 160.87-OM1
ISSUE DATE: 8/24/2018
LD20143
JOHNSON CONTROLS