Dual Chiller Pump Control For Parallel; Chiller Applications - Carrier AQUAFORCE 30XA080-500 Controls, Start-Up, Operation, Service And Troubleshooting Instructions

Air-cooled liquid chillers
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DUAL CHILLER PUMP CONTROL FOR PARALLEL

CHILLER APPLICATIONS — It is recommended that a
dedicated pump be used for each unit. The chiller must start
and stop its own water pump located on its own piping. If
pumps are not dedicated for each chiller, chiller isolation
valves are required and each chiller must open and close its
own isolation valve.
Table 32 — Dual Master Chiller Control Parameters for Series Applications with Touch Pilot™ Display
DISPLAY NAME
Master/Slave Select
Master Control Type
Slave Address
Lead Lag Select
Lead/Lag Balance Delta
Lag Start Timer
Lead Pulldown Time
Start If Error Higher
Lag Minimum Running Time
Lag Unit Pump Control
Chiller In Series
NOTE: If pump control is configured to OFF, then LAG UNIT PUMP
SELECT = 1. If pump control is set to any other value, then LAG
Table 33 — Dual Master Chiller Control Parameters for Series Applications with Navigator™ Display
ITEM
ITEM EXPANSION
MSSL
Master/Slave Select
SLVA
Slave Address
LLBL
Master Lead Lag Select
LLBD
Lead/Lag Balance Delta
LLDY
Lag Start Delay
LL.ER
Start If Error Higher
LAG.M
Lag Unit Pump Select
LPUL
Lead Pulldown Time
SERI
Chillers in Series
OPER
Operating Control Type
NOTE: If pump control is configured to OFF, then LAG UNIT PUMP
SELECT = 1. If pump control is set to any other value, then LAG
UNIT PUMP SELECT = 0. This configuration must be set consis-
tently for both master and slave chillers.
PATH
Main Menu
Config
MST_SLV
Main Menu
Config
MST_SLV
Main Menu
Config
MST_SLV
Main Menu
Config
MST_SLV
Main Menu
Config
MST_SLV
Main Menu
Config
MST_SLV
Main Menu
Config
MST_SLV
Main Menu
Config
MST_SLV
Main Menu
Config
MST_SLV
Main Menu
Config
MST_SLV
Main Menu
Config
MST_SLV
PATH
Configuration
RSET
Configuration
RSET
Configuration
RSET
Configuration
RSET
Configuration
RSET
Configuration
RSET
Configuration
RSET
Configuration
RSET
Configuration
RSET
Operating Modes
SLCT
DUAL CHILLER CONTROL FOR SERIES APPLICA-
TIONS — To configure the master chiller for series applica-
tions using the Touch Pilot™ display, see Table 32. To
configure the master chiller for series applications using the
Navigator™ display, see Table 33.
To configure the slave chiller for series applications using
the Touch Pilot™ display, see Table 34. To configure the slave
chiller for series applications using the Navigator™ display,
see Table 35. A power cycle is required for the values to take
effect.
LINE NO.
1 (Master)
3
Default: 0 (Disable)
1 (Local Control)
2 (Remote Control)
7
3 (CCN Control)
Default: 1 (Local Control)
Value: Configure for proper control type.
Must be set to the Slave Chiller's address.
The master and slave chiller must have
11
different addresses and be on the same
Bus Number
Default: 2
0 (Master Always Leads)
1 (Lag Once Failed Only)
12
2 (Lead/Lag Runtime Select)
Default: 0 (Master Always Leads)
Range: 40 to 400 hours
16
Default: 168 hours
Range: 2 to 30 minutes
17
Default: 10 minutes
Range: 0 to 60 minutes
18
Default: 0 minutes
Range: 3.0 to 18 F (1.7 to 10.0 C)
19
Default: 4.0 F (2.2 C)
Range: 0 to 150 minutes
20
Default: 0 minutes
0 (Stop If Unit Stops)
21
1 (Run If Unit Stops)
Default: 0 (Stop If Unit Stops)
Yes
22
Default: No
UNIT PUMP SELECT = 0. This configuration must be set consis-
tently for both master and slave chillers.
Master
Default: Disable
Must be set to the Slave Chiller's address.
The master and slave chiller must have
different addresses and be on the same
Bus Number
Default: 2
Range: Always Lead, Lag if Fail, Runtime Sel
Default: Always Lead
Range: 40 to 400 hours
Default: 168 hours
Range: 2 to 30 minutes
Default: 10 minutes
Range: 3.0 to 18 F (1.7 to 10.0 C)
Default: 4.0 F (2.2 C)
Range: Off If U Stp, On If U Stop
Default: Off If U Stp
Range: 0 to 60 minutes
Default: 0 minutes
YES
Default: NO
Set to desired value
36
VALUE
VALUE

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