Figure 38: Eev Ib-G Interface Board - York YLAA0041 Installation Operation & Maintenance

Form 150.72-ICOM6
Issue date: 12/19/2023
jUMP iNPUT
LOCATION SIGNAL
1 0–10 V

Figure 38: EEV IB-G Interface Board

High oil levels may cause excessive oil
carryover in the system. High oil concen-
tration in the system may cause nuisance
trips resulting from incorrect readings on
the level sensor and temperature sensors.
Temperature sensor errors may result in
poor liquid control and resultant liquid
overfeed and subsequent damage to the
compressor.
For Copeland compressors, use YORK V
oil, YORK P/N 011-00949-000.
For Bitzer compressors, use YORK PVE
oil, YORK P/N 011-00982-000.
Switch settings
Ensure the chiller OFF/ON UNIT switch at the bottom
of the keypad is OFF. Place the optional circuit breaker
handle on the panel door to ON. The customer's dis-
connection devices can now be set to ON.
Verify the control panel display is illuminated.
the system switches under the SYSTEM SWITCHES
key are in the OFF position.
Johnson Controls
LD23530
Supply voltage
Verify that the site voltage supply corresponds to the
unit requirement and is within the limits given in Sec-
tion 5: Technical data.
Water system
Verify the chilled liquid system has been installed cor-
rectly, and has been commissioned with the correct
direction of water flow through the cooler. The inlet
should be at the refrigerant piping connection end of
the cooler. Purge air from the top of the cooler using
the plugged air vent mounted on the extension pipe.
Flow rates and pressure drops must be within the limits
given in Section 5: Technical data. Operation outside
of these limits is undesirable and could cause damage.
If mains power must be switched OFF for extended
maintenance or an extended shutdown period, the com-
pressor suction, discharge and economizer service stop
valves should be closed (clockwise). If there is a pos-
Ensure
sibility of liquid freezing due to low ambient tempera-
tures, the coolers should be drained or power should be
applied to the chiller. This will allow the cooler heater
to protect the cooler from freezing down to –20°F. Be-
Section 6: Commissioning
dip switch All other
YLAA0230
number
1 OFF
2 OFF
3 OFF
dip switch ALL
number CHILLERS
4 OFF
5 OFF
6 ON
7 OFF
8
OFF
chillers
OFF
ON
OFF
6
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