York YCAS0130 manual Closed, SWITCH 3 Refrigerant Open, SWITCH 4 Unit Type Open

Closed:

S 1 - 2 A M B I E N T C O N T R O L L O W A M B I E N T

Low Ambient Mode allows the Low Ambient Cut-Out to be programmed from 0 to 50 °F (-18 to 10°C). Values above 25°F (-4°C) can be used to automatically shut down the chiller when direct cooling methods become operational.

SWITCH 3: Refrigerant

Open:

S 1 - 3 R E F R I G E R A N T

R - 4 0 7 C

The R-407C Mode MUST be selected for models using refrigerant R-407C. Incorrect selection of this switch may cause serious damage to the chiller.

Closed:

S 1 - 3 R E F R I G E R A N T

R - 2 2

The R-22 Mode MUST be selected for models using refrigerant type R-22. Incorrect selection of this switch may cause serious damage to the chiller.

SWITCH 4: Unit Type

Open:

S 1 - 4 Y C W S

DO NOT USE THIS POSITION.

Incorrect programming may cause damage to the chiller.

Closed:

S 1 - 4 Y C A S

Place the switch in the CLOSED position selects the type of chiller as an air cooled chiller (YCAS). The switch MUST always be in the CLOSED position.

Incorrect programming may cause damage to the chiller.

FORM 201.19-NM1 (204)

Dip Switch Physical Location and Setting

8

028981-G

“OPEN” Position: Left side of switch pushed in

“CLOSED” Position: LD03511B Right side of switch

pushed in

LD03511A

FIG. 49 – ENLARGED PHOTOGRAPH OF DIP SWITCHES ON MICROPROCESSOR BOARD

SWITCH 5: Motor Current Average option (start-up)

Open:

S 1 - 5 M O T O R C U R R E N T

A V E R A G I N G E N A B L E D

DO NOT USE THIS POSITION.

Nuisance trips at start-up could result.

YORK INTERNATIONAL 147