Function Key - York YCAS Series Installation Operation & Maintenance

Micro Panel Contents
Closed:
S 1 - 5 M O T O R C U R R E N T
A V E R A G I N G D I S A B L E D
Placing the switch in the CLOSED position, disables
motor current averaging protection at start-up. It is rec-
ommended that this option be selected to avoid nuisance
start-up trips especially at extreme ambient/operating
conditions.
SWITCH 6: Heat Recovery
Open:
S 1 - 6 H E A T R E C O V E R Y
D I S A B L E D
Placing the switch in the OPEN position, disables the
heat recovery option. The switch MUST be placed in
the OPEN position.
Incorrect programming may cause
damage to the chiller.
Closed:
S 1 - 6 H E A T R E C O V E R Y
E N A B L E D
DO NOT USE THIS POSITION.
Incorrect programming may cause
damage to the chiller.
SWITCH 7: Expansion Valve Type
Open:
S 1 - 7 E X P A N S I O N
T H E R M O S T A T I C
Placing the switch in the OPEN position, confi gures the
chiller for a TXV. TXV's will never be used on standard
chiller packages. The switch MUST NEVER be placed
in the OPEN position.
Closed:
S 1 - 7 E X P A N S I O N
E L E C T R O N I C
Placing the switch in the CLOSED position, confi gures
160
Summary of Settings
The following table gives a summary of Modes (dis-
played messages) which can be selected using the Open
and Closed positions for each of the eight SW1 Dip
Switches.
3.8
Pressing the Function key only displays the same mes-
V A L V E
sage as pressing the Status key. Pressing the Function
key followed by another display key will scroll through
all the data available under that key once. E.g., press ing
the Function key followed by the System 1 Data key will
result in scrolling through the 5 displays shown in Sec tion
3.3 without the need to press the System 1 Data key to
scroll to the next display. After scrolling through the data,
the display returns to the status mes sage.
V A L V E
The following keys can be scrolled using the Function
Key: Chilled Liquid Temps, System # Data, Motor Cur-
rent and Options.
the chiller for an EEV (Electronic Expansion Valve).
The switch MUST be placed in the CLOSED posi-
tion.
Incorrect programming may cause
damage to the chiller.
SWITCH 8: Spare
Presently, Switch 8 is not used.
SWITCH "OPEN
SWITCH
SETTING
Water Cooling
1
Standard Ambient
2
Control
Refrigerant R-407C
3
Do Not Use
4
YCWS
Not Recommended.
Motor Current
5
Average Start
Protection Enabled
Heat Recovery
6
Disabled
Do Not Use.
Thermostatic
7
Expansioon Valve
Spare
8

FUNCTION KEY

FORM 201.19-NM8 (804)
SWITCH "CLOSED"
SETTING
Brine Cooling
Low Ambient
Control
Refrigerant R-22
YCAS
Recommended.
Motor Current
Average Start
Protection Disabled
Do Not Use
Heat Recovery
Enabled
Electronic
Expansion Valve
Spare
YORK INTERNATIONAL