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FORM 160.54-M1
ISSUE DATE: 10/25/2019
SECTION 36 - SOFTWARE ENHANCEMENTS
JCI COMPANY CONFIDENTIAL
JOHNSON CONTROLS
SI0058 - SOFTWARE ENHANCEMENTS EFFECTIVE FEBRUARY 2003
GENERAL
Beginning February 2003, an enhanced Flash memory
card will be supplied in all new production YK chillers.
These cards are backward compatible to all previous
YK chillers and are available from the Baltimore Parts
Distribution Center as replacement parts. The enhance-
ments are outlined below.
The versions and part numbers are applied as follows:
• NEMA 1-4 chillers
C.MLM.01.08.105 (p/n 031-01797-001)
• CE chillers
C.MLM.01.08.206 (p/n 031-01797-002)
FLOW SENSORS
Mod Style F chillers are provided with factory mount-
ed thermal-type flow sensors for the evaporator and
condenser. However, this Flash memory card version
allows Style F chillers to use either the thermal-type
or field installed paddle-type flow sensor. The thermal-
type sensors interface to Micr5 VDC Analog
Inputs at J7-14 (evaporator) and J7-16 (condenser).
The paddle-type sensors interface to the I/O Board 115
VAC Digital inputs at TB4-12 (evaporator) and TB4-
11 (condenser). For the program to read the appropriate
inputs for the flow sensor status, the actual sensor type
used must be entered at the keypad OPERATIONS
Screen using the SERVICE access level.
If the chiller mod style level setpoint on the OPERA-
TIONS screen is set to
F
(any compressor), the FLOW
SWITCH key appears on the OPERATIONS screen
allowing the flow sensor type to be entered. The se-
lections are ANALOG (thermal-type) or DIGITAL
(paddle-type). If Analog is selected, the program reads
the thermal-type flow sensor inputs at Microboard An-
alog Inputs J7-14 (evaporator) and J7-16 (condenser)
and ignores the digital inputs. If digital is selected, the
program reads the paddle-type sensor inputs at the I/O
board digital inputs TB4-12 (evaporator) and TB4-11
(condenser) and ignores the analog inputs.
Enter the applicable flow sensor type as follows:
1. Select SETPOINTS/SETUP/OPERATIONS screen.
2. Press FLOW SWITCH key.
3.
Use ◄ or ► keys to select flow sensor type. Each
time the key is pressed, analog or digital is alter-
nately displayed.
4. Press ENTER (
) key.
VARIABLE SPEED DRIVE OIL PUMP
When the oil pump is started during system pre-lube,
the pump speed command is held at 45Hz for the first
eight seconds before releasing to normal control.
Oil Pressure Threshold
The threshold for OIL – HIGH DIFFERENTIAL
PRESSURE safety shutdown is changed from 90 psid
to 120 psid .
COMPRESSOR MOTOR VARIABLE SPEED
DRIVE (VSD)
This flash memory card version supports VSD part
number 371-03789-XXX (503HP; 60Hz) (419HP;
50Hz). Display messages unique to this drive are dis-
played appropriately on the screens as follows: Phase
A, B and C baseplate temperatures are displayed on the
VSD DETAILS screen and filter baseplate temperature
is displayed on the FILTER DETAILS Screen.
In addition to standard VSD cycling messages, the fol-
lowing cycling shutdown messages apply to this VSD:
VSD – LOW PHASE A INVERTER BASEPLATE
TEMPERATURE
The chiller has shutdown because the baseplate tem-
perature has decreased to less than 37°F.
VSD – LOW PHASE B INVERTER BASEPLATE
TEMPERATURE
Same as Phase A above.
