Specifications

29
BRINE OR GLYCOL OPERATION — Configure the unit
for Cooler Fluid Type (Cooler Fluid Type, FLUD) to brine for
brine or glycol chilled water loops. This option will allow for a
set point temperature range of 14 to 60 F (–10.0 to 15.5 C).
Before configuring this selection, confirm that a suitable anti-
freeze has been added and is at a sufficient concentration to
protect the loop. Additionally, the Brine Freeze Set Point
(Brine Freeze Setpoint, LOSP) must be set for proper freeze
protection operation. Set the Brine Freeze Set Point to the burst
protection provided by the glycol concentration. This value
will be Freeze Point for the fluid.
To configure this option with the Touch Pilot™ display:
To configure this option with the Navigator™ display:
Cooler Pump Control — It is required for all chillers
that the cooler pump control be utilized unless the chilled water
pump runs continuously or the chilled water system contains a
suitable concentration of antifreeze solution. When the Cooler
Pumps Sequence is configured, the cooler pump output will be
energized when the chiller enters an "ON" mode. The cooler
pump output is also energized when certain alarms are generat-
ed. The cooler pump output should be used as an override to
the external pump control if cooler pump control is not utilized.
The cooler pump output is energized if a P.01 Water Exchanger
Freeze Protection alarm is generated, which provides addition-
al freeze protection if the system is not protected with a suitable
antifreeze solution.
The 30XW units can be configured for external cooler
pump control. Cooler Pumps Sequence is the variable that
must be confirmed in the field. Proper configuration of the
cooler pump control is required to provide reliable chiller oper-
ation. The factory default setting for Cooler Pumps Sequence is
0 (No Pump). The configuration settings for Cooler Pumps Se-
quence are 1 (1 pump only) for single pump control and 2 (2
pumps auto). Configuration settings 3 (PMP 1 Manual) and 4
(PMP 2 Manual) are for dual pump control only.
If the Cooler Pumps Sequence (PUMP) is set to 1, the con-
trol will start the pump. If a flow failure is detected, the unit
will shut down and must be manually reset. If the Cooler
Pumps Sequence (PUMP) is set to 2, the control will start the
lead pump and automatically alternate the operation of the
pumps to even the wear. If a flow failure is detected, the unit
will shut down and the lag pump will attempt to start. If flow is
established within the Unit Off to On Delay (DELY) period the
unit will restart automatically.
Two manual control options are also available. When the
Cooler Pumps Sequence (PUMP) is set to 3, Cooler Pump 1
will always operate. If a flow failure is detected, the unit will
shut down and must be manually reset. When the Cooler
Pumps Sequence (PUMP) is set to 4, Cooler Pump 2 will al-
ways operate. If a flow failure is detected, the unit will shut
down and must be manually reset.
For all Cooler Pumps Sequence (PUMP) settings (including
0), closure of both the chilled water flow switch (CWFS) and
the chilled water pump interlock contact (connected across
TB5 terminals 1 and 2) are required. In addition, for Cooler
Pumps Sequence settings of PUMP = 1, 2, 3, 4, normally open
auxiliary contacts for Pump 1 and Pump 2 (wired in parallel)
must be connected to the violet and pink wires located in the
harness from the MBB-J5C-CH18 connector. The wires in the
harness are marked "PMP1-13" and "PMP1-14". See the field
wiring diagram in the 30XW Installation Instructions.
Regardless of the cooler pump control option selected, if the
chilled water flow switch/interlock does not close within the
Unit Off to On Delay period after the unit is enabled and in an
ON mode, alarm P.91 will be generated. Other conditions
which will trigger this alarm include:
• Cooler pump interlock is open for at least 15 seconds during
chiller operation.
• Lag chiller in Master/Slave Control pump interlock does not
close after 1 minute of the pump start command.
• Cooler pump control is enabled and the chilled water flow
switch/interlock is closed for more than 2 minutes following
a command to shut down the pump.
The last alarm criterion can be disabled. If the cooler pump
flow setting (Flow Checked if C Pmp Off, P. L O C ) is set to
NO, the control will ignore the pump interlock input if the
cooler pump output is OFF.
The ComfortLink controls have the ability to periodically
start the pumps to maintain the bearing lubrication and seal in-
tegrity. If Pump Sticking Protection (Pump Sticking Protec-
tion, PM.PS) is set to YES, and if the unit is off at 2:00 PM, a
pump will be started once each day for 2 seconds. If the unit
has 2 pumps, Pump 1 will be started on even days (such as day
2, 4, or 6 of the month); Pump 2 will be started on odd days.
The default for this option is PM.PS=NO.
The pump will continue to run for 60 seconds after an off
command is issued.
COOLER PUMP CONTROL CONFIGURATIONS
No Pump Control
— To configure cooler pump control op-
tions with the Touch Pilot™ display:
To configure cooler pump control options with the Naviga-
tor™ display:
Single Pump Control
— To configure cooler pump control
options with the Touch Pilot™ display:
To configure cooler pump control options with the Naviga-
tor™ display:
DISPLAY
NAME
PAT H
LINE
NO.
VALUE
Cooler Fluid
Type
Main Menu
Service SERVICE1
12 = Brine
Brine Freeze
Setpoint
Main Menu
Service SERVICE1
3
Dependent on
fluid concentration
Brine
Minimum
Fluid Temp
Main Menu
Service SERVICE1
4
Dependent on job
site requirements
ITEM ITEM EXPANSION PATH VALUE
FLUD Cooler Fluid Type Configuration SERV Brine
LOSP
Brine Freeze
Setpoint
Configuration SERV
Dependent on
fluid concentration
LLWT
Brine Minimum
Fluid Temp
Configuration SERV
Dependent on job
site requirements
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DISPLAY NAME PATH
LINE
NO.
VALUE
Cooler Pumps
Sequence
Main
Menu Config USER
8
0 (No Pump
Control)
ITEM ITEM EXPANSION PATH VALUE
PUMP
Cooler Pumps
Sequence
Configuration OPTN No Pump
DISPLAY NAME PATH
LINE
NO.
VALUE
Cooler Pumps
Sequence
Main
Menu Config USER
8
1 (Single
Pump Control)
Pump Sticking
Protection
Main
Menu Config USER
15
Default = No
No = Disabled
Yes = Enabled
Flow Checked
if C Pump Off
Main
Menu Config USER
17
Default = Yes
No = Disabled
Yes = Enabled
ITEM ITEM EXPANSION PATH VALUE
PUMP
Cooler Pumps
Sequence
Configuration OPTN 1 Pump Only
PM.PS
Periodic Pump
Start
Configuration OPTN
Default = No
No = Disabled
Yes = Enabled
P.L OC
Flow Checked
if Pmp Off
Configuration OPTN
Default = Yes
No = Disabled
Yes = Enabled
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