Quantech
119
Section 6: Commissioning
Form QTC3-NM1
Issue date: 12/19/2023
6
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. Ensure
the system switches under the SYSTEM SWITCHES
key are in the OFF position.
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-
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-
Jump
location
Input
signal
1 0–10 V
Figure 38: EEV IB-G Interface Board
DIP switch
number
ALL
CHILLERS
4 OFF
5 OFF
6 ON
7 OFF
8 OFF
DIP switch
number
QTC3225T
All other
chillers
1 OFF OFF
2 OFF ON
3 OFF OFF
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