Specifications

26
Table 21B — Cooling Set Point Selection
with Navigator™ Display
In all cases, there are limits on what values are allowed for
each set point. These values depend on the Cooler Fluid Type
and the Brine Freeze Set point, discussed later. See Table 22.
Table 22 — Configuration Set Point Limits
*The minimum set point for Medium Temperature Brine applications
is related to the Brine Freeze Point. The set point is limited to be no
less than the Brine Freeze Point +5° F (2.8° C).
The Setpoint Select configuration can be set to five different
control options: Set Point Occupancy, Set Point 1, Set Point 2,
4-20 mA Input, and Dual Switch.
SET POINT OCCUPANCY — Set Point Occupancy is the
default configuration for the Setpoint Select variable. When
Setpoint Select (Setpoint Select, SP.SE) is configured to 0
(Setpoint Occ), the unit’s active set point is based on Cooling
Set Point 1 (Cooling Setpoint 1, CSP.1) during the occupied
period while operating under Time Schedule 1 (SCH1). If the
Time Schedule 2 (SCH2) is in use, the unit’s active set point is
based on Cooling Set Point 1 (Cooling Setpoint 1, CSP.1) dur-
ing the occupied period and Cooling Set Point 2 (Cooling Set-
point 2, CSP.2) during the unoccupied period. See Tables 23A
and 23B.
To configure this option while using a Touch Pilot display:
To change this value, a Control Point Force must be applied.
When configured correctly, Setpoint Select (Setpoint Select,
SP.SE) will indicate Auto.
To configure this option while using a Navigator™ display:
Table 23A — Cooling Set Point Selection Touch Pilot™ Parameters
Table 23B — Cooling Set Point Selection Navigator™ Parameters
ITEM ITEM EXPANSION PATH VALUE
CSP.1 Cooling Setpoint 1 Setpoints COOL
Range: 14 to 70 F
(–10.0 to 21.1 C)
Default: 44 F (6.6 C)
CSP.2 Cooling Setpoint 2 Setpoints COOL
Range: 14 to 70 F
(–10.0 to 21.1 C)
Default: 44 F (6.6 C)
CSP.3 Ice Setpoint Setpoints COOL
Range: -20 to 32 F
(–28.9 to 0 C)
Default: 44 F (6.6 C)
SET POINT LIMITS
COOLER FLUID TYPE
(COOLER FLUID TYPE, FLUD)
1, Water 2, Brine
Minimum * 38 F (3.3 C) 14 F (–10.0 C)
Maximum 60 F (15.5 C)



CAUTION
Brine duty application (below 40 F [4.4 C] LCWT) for
chillers normally requires factory modification. Contact
a Carrier Representative for details regarding specific
applications. Operation below 40 F (4.4 C) LCWT with-
out modification can result in compressor failure.
DISPLAY NAME PATH LINE NO. VALUE
Setpoint select Status GENUNIT 25 0 (Setpoint Occupied)
ITEM ITEM EXPANSION PATH VALUE
SP.SE Setpoint Select Operating Modes SLCT Setpoint Occ


SET POINT
CONFIGURATION
(Setpoint Select)
ICE MODE
ENABLE
(ice_cnfg)
DUAL SET
POINT INPUT
(SETP_SW)
ICE DONE INPUT
(ICE_SW)
TIME
SCHEDULE 2
ACTIVE
SET POINT
0
(Auto)
NO
— — Occupied Cooling Setpoint 1
— — Unoccupied Cooling Setpoint 2
YES
— Open Unoccupied Cooling Ice Setpoint
— Closed Unoccupied Cooling Setpoint 2
— — Occupied Cooling Setpoint 1
1 (Setp 1) — — — — Cooling Setpoint 1
2 (Setp 2) — — — — Cooling Setpoint 2
3 (4-20 mA) — — — — 4 to 20 mA Input
4 (Setp Sw)
NO
Open — — Cooling Setpoint 1
Closed — — Cooling Setpoint 2
YES
Open — — Cooling Setpoint 1
Closed Open — Cooling Ice Setpoint
Closed Closed — Cooling Setpoint 2
PARAMETER STATUS
ACTIVE
SET POINT
Control Method
(OPER)
Heat/Cool
Select (HC.SE)
Setpoint
Select (SP.SE)
Ice Mode
Enable (ICE.M)
Ice Done
(ICE.D)
Dual Setpoint
Switch (DUAL)
Setpoint
Occupied
(SP.OC)
LOCAL COOL
Setpoint Occ — — — Occupied CSP.1
Setpoint Occ — — — Unoccupied CSP.2
Setpoint Occ Enable Open — Unoccupied CSP.3
Setpoint 1 — — — — CSP.1
Setpoint 2 — — — — CSP.2
4-20mA Setp — — — — 4_20mA
— Enable Open Closed — CSP.3
— Enable Closed Closed — CSP.2
— — — Open — CSP.1
Dual Setp Sw — — Closed — CSP.2
CCN COOL
— — — — Occupied CSP.1
— — — — Unoccupied CSP.2