York YT Millennium, Эксплуатация и техническое обслуживание

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FORM 160.55-O1 (920)
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YORK INTERNATIONAL
to 60. During this period, purge exhausts are counted
and the Exhaust Count displayed is that which has oc-
curred in the last number of minutes displayed in the
Exhaust Window. After the Exhaust Window reaches
60, the purge exhausts that occurred in the oldest min-
ute are discarded from the Exhaust Count and exhausts
from the most recent minute are shifted in, providing a
rolling count of purge exhausts that occurred in the last
60 minutes. It remains at 60 until the chiller is restarted,
whereupon it is reset to 0.
Bypass Time Left
Replaces “Exhaust Window” label during the first 60
minutes of chiller run. Counts down the 60 minute purge
count bypass.
PROGRAMMABLE
High Efficiency Purge System (Enabled/Disabled)
Access Level Required: SERVICE
Selects the appropriate control and purge exhaust
thresholds for the installed purge system. High Effi -
ciency (pump assisted) purge systems exhaust at >90.0
PSIA. Non pump-assisted purge systems exhaust at
>34.7 PSIA.
Maximum Purges/Hour
Access Level Required:
OPERATOR/SERVICE
Allows the user to define the number of purge air ex -
hausts permitted before an Excess Purge Warning is
displayed. With OPERATOR access level, the value
can be programmed over a range of 10 to 30 Purges/
Hour. Service Technicians, in SERVICE access level
can program this setpoint over a greater range.
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Condenser
Access Level Required: VIEW
Causes an instant return to the Condenser Screen.
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