York YCAL0014SC, YCAL0080SC manual Unit Controls, Option 5 – Ambient Control Type

Unit Controls

or

C H I L L E D L I Q U I D

G L Y C O L

The chilled liquid is glycol. The Cooling Setpoint can be programmed from 10°F to 70°F (-12.2°C to 21.1°C).

Option 5 – Ambient Control Type

A M B I E N T C O N T R O L

S T A N D A R D

The low ambient cutout is adjustable from 25°F to 60°F (-3.9°C to 15.6°C).

or

A M B I E N T C O N T R O L

L O W A M B I E N T

The low ambient cutout is programmable down to 0°F (-17.8°C). A low ambient kit MUST be installed for this option to be chosen.

Option 6 – Local/Remote Control Type

L O C A L / R E M O T E M O D E L

L O C A L

When programmed for LOCAL, an ISN or RCC control can be used to monitor only. The micro panel will oper-

ate on locally programmed values and ignore all com- mands from the remote devices. The chiller will com- municate and send data to the remote monitoring de- vices.

or

L O C A L / R E M O T E M O D E

R E M O T E

This mode should be selected when an ISN or RCC control is to be used to control the chiller. This mode will allow the ISN to control the following items: Remote Start/Stop, Cooling Setpoint, Load Limit, and History Buffer Request. If the unit receives no valid ISN trans- mission for 5 minutes, it will revert back to the locally programmed values.

Option 7 – Unit Control Mode

C O N T R O L M O D E

R E T U R N L I Q U I D

Unit control is based on return chilled liquid temp. It can only be selected on units that have 4 or 6 compressors (dual system units).

or

C O N T R O L M O D E

L E A V I N G L I Q U I D

Unit control is based on leaving chilled liquid temp.

Refer to section on Capacity Control for details on load- ing and unloading sequences.

82 YORK INTERNATIONAL