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SECTION 33 - SYSTEM CALIBRATION, SERVICE SETPOINTS, AND RESET PROCEDURES
FORM 160.54-M1
ISSUE DATE: 10/25/2019
JOHNSON CONTROLS
JCI COMPANY CONFIDENTIAL
33
2. Select QUICK START from the SETPOINTS
Screen.
3. Press CHANGE SETPOINTS key.
4.
A green box will appear around the first change
-
able setpoint. Use the UP/DN arrow keys to place
the box around the setpoint to be changed.
5. Press the
key.
6. Use the
◄ and ►
keys to select the desired setting.
7. Press the
key.
HEAT PUMP DUTY
(Software Version C.OPT.01.23.307 and later)
The Heat Pump Duty feature is an available option
on certain model YK chillers after January 2011. The
feature is enabled and disabled on the SETUP Screen.
Once enabled, Heat Pump Duty can be switched be-
tween Cooling Mode and Heating Mode on the HEAT
PUMP Screen. In Cooling Mode, the chiller controls
the Leaving Chilled Liquid Temperature to its setpoint.
In Heating Mode, the chiller controls the Leaving Con-
denser Liquid Temperature to its setpoint. Details of
the Heat Pump operation are in
Enable/Disable
Use the following procedure:
1. At the keypad, log in at ADMIN access level us-
ing an ADMIN password.
2. Select SETUP Screen from the SETPOINTS
Screen.
3. Press CHANGE SETPOINTS key.
4.
A green box will appear around the first change
-
able setpoint. Use Up/Down arrows to place the
box around the Heat Pump Duty setpoint (The Re-
frigerant Selection setpoint must be set to R- 134a
in order for this setpoint to appear).
5. Press
key. A dialog box appears with the range
of settings.
6. Use left/right arrow keys to select the desired set-
ting.
7. Press
key.
Setpoints
Refer to the
HEAT PUMP Screen
section in
Operation
Manual 160.54-O1
and enter the following setpoints:
• Heating Sensitivity
• Operational Mode
• Leaving Condenser Liquid Temperature – Setpoint
• Leaving Condenser Liquid Temperature – Range
• Leaving Condenser Liquid Temperature Cycling
Offset – Shutdown
• Leaving Chilled Liquid Temperature Cycling Off-
set – Restart
• Heating LCHLT (Leaving Chilled Liquid Tem-
perature) Shutdown
MOTOR MONITORING SOFTWARE (VERSION
C.OPT.01.22.307 AND LATER)
The optional Motor Monitoring feature monitors the
winding temperatures, bearing temperatures and vibra-
tion and provides motor cooling coil leak detection.
To use this feature, it must be enabled on the SETUP
Screen. By default, this feature is disabled. When en-
abled, there are two display screens for this feature:
• The Motor DETAILS Screen is available from the
MOTOR Screen.
• The MOTOR SETPOINTS Screen is available
from the Motor DETAILS Screen.
A complete explanation of this feature and the follow-
ing setpoints is contained in
of this manual.
MOTOR DETAILS SCREEN
This screen allows any combination of winding tem-
perature, bearing temperature and bearing vibration
sensing to be enabled or disabled based on the actual
equipment applied. The motor could be equipped with
different types of sensors for motor monitoring. Either
RTD's or thermistors could be applied for winding and
bearing temperature monitoring. Motor cooling coil
leak detection could be done with either an optical or
float sensor. Setpoints on this screen allow for the en-
abling of the actual sensor type applied. Also on this
screen, vibration baseline data can be entered manually
or by running an auto baseline routine that plots a base-
line over a 1 hour period while the chiller is running.
To access the MOTOR DETAILS screen: