Service manual

19 – 6
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9
Section 19 • Configuration
to 100 % valve open.
Oil Cooling
The section defi nes how the Vission 20/20 will monitor
and/or control the temperature of the compressor oil,
see Figure 19-2. Confi guration Screen - Page 2.
Thermosyphon:
• This defi nes the compressor oil cooling method as
thermosyphon.
H20 Oil Cooler:
• This defi nes the compressor oil cooling method as
water heat exchange.
Liquid Injection:
• This defi nes the compressor oil cooling method as
liquid refrigerant injection.
Solenoids:
• Enables the solenoid for liquid injection control.
Motorized Valve:
• Enables the motorized value for liquid injection con-
trolled by PID settings.
Remote Oil Cooler:
• Defi nes the compressor oil cooling method as
Remote Oil Cooler. Remote Oil Cooler vfd fan can
be enabled when Auxiliary Output board is installed
and enabled. Rest of the Remote Oil Cooler setpoints
can be defi ned by navigating to Remote Oil Cooler
Screen. Remote Oil Cooler and Condenser Control
feature are mutually exclusive.
Motor Current Device
The Vission 20/20 can read the motor current in a couple
of different ways. The following selections defi nes the
method, see Figure 19-2. Confi guration Screen - Page 2.
Current Transformer:
• This defi nes the input used for motor current when a
current transformer is used.
4-20ma Transformer:
• This defi nes the input used for motor current.