Ambient Temp Key; Motor Current Key; Operating Hours / Start Counter Key - York MILLENNIUM YCAR0315 Installation Operation & Maintenance

S Y S # O I L =
S P = 6 0 D P =
S Y S # O I L
S T
S # S A T S U C T
S U C T S H E A T
S Y S # L O A D
*
S Y S # C O O L E R
R E F R I G T E M P
* This display will only appear in the R-407C mode.
Temperatures and pressures are measured either di-
rectly by transducers and temperature sensors, or com-
puted from these measurements as follows:
• Differential oil pressure is the difference between
oil pump output pressure and suction pressure, as
measured by the transducers.
• Saturated suction temperature is computed by con-
verting measured pressure to temperature.
• Superheats are the difference between the respec-
tive saturated temperature (converted from pres-
sure) and actual temperature.
• Load stage increments from 0-2, according to the
loading step of each compressor as loaded by the
micro. Stage O = Compressor OFF. Stage U =
Compressor ON and unloaded. Stage = Number of
solenoids on the compressor de-energized and
loaded.
Display limits for the System Pressures and Tempera-
tures displays are as follows:
MIN. LIMIT
Oil Pressure 14 bar (208 PSID)
Suction Pressure 0 bar (0 PSIG)
Discharge Pressure 0 bar (0 PSIG)
Oil Temp. -14°C (7°F)
Suction Temp. -13°C (9°F)
Sat. Suction Temp. -41.0°C (-41°F)
Suction Superheat -63°C (-81.5°F)
Load Stage 0
YORK INTERNATIONAL
7 2 P S I D
2 2 9 P S I G
= 5 4 . 4 ° C
= 8 . 2 ° C
= - 0 . 2 ° C
= - 9 . 3 ° C
S T A G E = 2
I N L E T
= 3 1 . 9 ° C
MAX. LIMIT
0 bar (0 PSID)
14 bar (199 PSIG)
28 bar (399 PSIG)
94.5°C (202.1°F)
56°C (132.8°F)
39°C (101.3°F)
16°C (60.9°F)
2
Minimum and maximum values may
change as software (EPROM) revi-
sions are made.

3.4 AMBIENT TEMP KEY

When the Ambient Temperature Key is pressed, ambi-
ent air temperature, as measured surrounding the chiller,
is displayed.
A M B I E N T
= 8 6 . 8
Display Limits: Minimum
Maximum =

3.5 MOTOR CURRENT KEY

Pressing the Motor Current Key displays compressor
current for each system:
C O M P # 2 4 0
C O M P # 1 7 6
This display shows the average motor current in amps
and average compressor motor current as a percentage
of FLA. % FLA values are approximate. Keep in mind
that current in amps is also an "approximate" value.
I S N C R N T L I M I T :
E M S C R N T L I M I T :
On the second press of the of the Motor Current Key,
the current limit values as set by the ISN (Remote BAS
System) and EMS-PWM current limiting input are dis-
played, if they are active. See Section 9 (1.10, 2.4 and
3.5) for more details.
3.6 OPERATING HRS / START COUNTER KEY
When the Operating Hours / Starts Counter key is
pressed, the accumulated running hours and starts for
System 1 and 2 compressors are displayed. Where ap-
plicable, pressing the key again displays the values for
Systems 3 and 4 on larger models:
FORM 150.52-NM2 (1001)
A I R T E M P
° C
= -20.3°C (-4.6°F)
58.8°C (137.9°F)
A M P 8 2 % F L A
A M P 4 3 % F L A
N O N E
N O N E
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