Specifications
32
valves are required and each chiller must open and close its
own isolation valve.
DUAL CHILLER CONTROL FOR SERIES APPLICA-
TIONS — To configure the master chiller for series applica-
tions using the Touch Pilot™ display, see Table 29. To
configure the master chiller for series applications using the
Navigator™ display, see Table 30.
To configure the slave chiller for series applications using
the Touch Pilot™ display, see Table 31. To configure the slave
chiller for series applications using the Navigator™ display,
see Table 32.
DUAL CHILLER PUMP CONTROL FOR SERIES
CHILLER APPLICATIONS — Pump control for series chill-
er applications is controlled by the master chiller only. The
control of the slave chiller is directed through commands emit-
ted by the master chiller. The slave chiller has no action in
master/slave operations. The slave chiller only verifies that
CCN communication with the master chiller is present. See the
Dual Chiller Sequence of Operation section on page 58.
Table 25 — Dual Master Chiller Control Parameters for Parallel Applications with Touch Pilot™ Display
Table 26 — Dual Master Chiller Control Parameters for Parallel Applications with Navigator™ Display
DISPLAY NAME PATH LINE NO. VALUE
Master/Slave Select Main Menu Config MST_SLV 3
1 (Master)
Default: 0 (Disable)
Master Control Type Main Menu Config MST_SLV 7
1=Local Control
2=Remote Control
3=CCN Control
Default: 1
Configure for proper control type.
Slave Address Main Menu Config MST_SLV 11
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
Lead Lag Select Main Menu Config MST_SLV 12
0 (Master Always Leads)
1 (Lag Once Failed Only)
2 (Lead/Lag Runtime Select)
Default: 0 (Master Always Leads)
Lead/Lag Balance Delta Main Menu Config MST_SLV 16
Range: 40 to 400 hours
Default: 168 hours
Lag Start Timer Main Menu Config MST_SLV 17
Range: 2 to 30 minutes
Default: 10 minutes
Lead Pulldown Time Main Menu Config MST_SLV 18
Range: 0 to 60 minutes
Default: 0 minutes
Start If Error Higher Main Menu Config MST_SLV 19
Range: 3.0 to 18 F (1.7 to 10.0 C)
Default: 4.0 F (2.2 C)
Lag Minimum Running Time Main Menu Config MST_SLV 20
Range: 0 to 150 minutes
Default: 0 minutes
Lag Unit Pump Control Main Menu Config MST_SLV 21
0 (Stop If Unit Stops)
1 (Run If Unit Stops)
Default: 0 (Stop If Unit Stops)
Chiller In Series Main Menu Config MST_SLV 22
Default: No
Value: No
ITEM ITEM EXPANSION PATH VALUE
MSSL Master/Slave Select Configuration RSET
Master
Default: Disable
SLVA Slave Address Configuration RSET
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
LLBL Master Lead Lag Select Configuration RSET
Range: Always Lead, Lag if Fail, Runtime Sel
Default: Always Lead
LLBD Lead/Lag Balance Delta Configuration RSET
Range: 40 to 400 hours
Default: 168 hours
LLDY Lag Start Delay Configuration RSET
Range: 2 to 30 minutes
Default: 10 minutes
LL.ER Start If Error Higher Configuration RSET
Range: 3.0 to 18 F (1.7 to 10.0 C)
Default: 4.0 F (2.2 C)
LAG.M Lag Minimum Running Time Configuration RSET
Range: 0 to 150 minutes
Default: 0 minutes
LAGP Lag Unit Pump Select Configuration RSET
Range: Off If U Stp, On If U Stop
Default: Off If U Stp
LPUL Lead Pulldown Time Configuration RSET
Range: 0 to 60 minutes
Default: 0 minutes
SERI Chillers in Series Configuration RSET
No
Default: No
OPER Operating Control Type Operating Modes SLCT Set to desired control