Operating Hrs / Start Counter Key; Options Key And Dip Switch Settings - York YCWS0313SC Installation, Operation And Maintenance Manual

4.6 OPERATING HRS / START COUNTER KEY

When the key is pressed, the accumulated running hours
and starts for refrigerant system 1 and 2 compressors
are displayed.
H R S 1 = 1 1 4 3 . 2
S T R 1 = 2 8 5 . 2
Display Limits: Maximum run hours 99,999
Maximum starts 99,999
Values roll over to zero, if the maximum limit is exceeded.
These counters are zeroed at the fac-
tory, but may indicate run time and
number of starts logged during fac-
tory testing before shipment.

4.7 OPTIONS KEY AND DIP SWITCH SETTINGS

This key provides a display of options which are pro-
grammed by the positions of the S1 Dip Switches on
the AMB board. Proper programming of the switches
is important during the commissioning of the chiller.
The options key can be used to verify the Dip Switch
positions without checking the AMB board.
Each press of the key will scroll to the next option/dip
switch setting.
Four Option Switch Messages (S1-1 to S1-4) will then
be displayed in sequence. At the end of the sequence,
the display will automatically revert to the first Option
Switch message.
The following is a detailed guide to programming the
Dip Switches together with the associated display mes-
sage provided for each selection when the 'OPTIONS'
key is pressed:
SWITCH 1: Water / Brine Cooling
Open:
S 1 - 1 C H I L L E D
W A T E R
Water cooling mode is for water cooling applications
and allows the chilled liquid leaving temperature set-
point to be programmed from 4.4 to 21.1°C.
YORK INTERNATIONAL
Selecting this mode also auto-programs the low chilled
liquid cutout at 2.2°C and the suction pressure cutout
at 3.03 bar.
Closed:
= 1 3 8 2 S 1 - 1
= 3 2 2
Brine cooling mode is for brine/glycol applications with
setpoints below 4.4°C and allows the chilled liquid leav-
ing temperature setpoint to be programmed from -
12.2 to 21.1°C.
In this mode, the low chilled liquid cutout can be pro-
grammed from -13.3 to 2.2°C and the suction pressure
cutout can be programmed from 0.34 to 4.83 bar.
SWITCH 2: Ambient Temp. Low Limit
Open:
S 1 - 2
Standard ambient mode with the low ambient cutout
set at -3.9°C (not adjustable).
Closed:
S 1 - 2
Low ambient mode allows the low ambient cutout to
be programmed from -17.8 to 10°C.
SWITCH 3: Refrigerant
Open:
S 1 - 3
L I Q U I D
SWITCH 4: Unit
Open:
S 1 - 4
FORM 201.24-NM2
C H I L L E D L I Q U I D
G L Y C O L
A M B I E N T C O N T R O L
S T A N D A R D
A M B I E N T C O N T R O L
L O W A M B I E N T
R E F R I G E R A N T
R - 2 2
The R-22 mode MUST be selected.
The closed position MUST NOT be se-
lected. Incorrect selection of this
switch may cause serious damage to
the chiller.
Y C W S
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