Chilled Water Fluid Type Selection; Fresh Water - Carrier AQUAFORCE 30XA080-500 Controls, Start-Up, Operation, Service And Troubleshooting Instructions

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 26
and 27.
To configure this option while using a Touch Pilot display:
DISPLAY NAME PATH

Setpoint select Status GENUNIT
To change this value, a Control Point Force must be applied.
When configured correctly, Setpoint Control (Setpoint
Control, SP.SE) will indicate Auto.
To configure this option while using a Navigator display:
ITEM ITEM EXPANSION
SP.SE Setpoint Select Operating Modes
Set Point 1 — When Set Point Select (Setpoint Select, SP.SE)
is configured to 1 (Setpoint 1), the unit's active set point is
based on Cooling Set Point 1 (Cooling Setpoint 1, CSP.1).
To configure this option with the Touch Pilot display:
DISPLAY NAME PATH

Setpoint select Status GENUNIT
To change this value, a Control Point Force must be applied.
When configured correctly, Setpoint Control will indicate
Setp 1.
To configure this option with the Navigator™ display:
ITEM ITEM EXPANSION
SP.SE Setpoint Select Operating Modes
Set Point 2 — When Set Point Select (Setpoint Select, SP.SE)
is configured to 2 (Setpoint 2), the unit's active set point is
based on Cooling Set Point 2 (Cooling Setpoint 2, CSP.2).
To configure this option with the Touch Pilot™ display:
DISPLAY NAME PATH

Setpoint select Status GENUNIT
To change this value, a Control Point Force must be applied.
When configured correctly, Setpoint Control (Status
GENUNIT) will indicate Setp 2.
To configure this option with the Navigator display:
ITEM ITEM EXPANSION
SP.SE Setpoint Select Operating Modes
4 to 20 mA Input — When Set Point Select (Setpoint Select,
SP.SE) is configured to 3 (4-20 mA Setp), the unit's active set
point is based on an field supplied, external 4 to 20 mA signal
input to the Energy Management Module (EMM). Care should
be taken when interfacing with other manufacturer's control
systems, due to power supply differences of full wave bridge
versus half wave rectification. The two different power sup-
plies cannot be mixed. ComfortLink™ controls use half wave
rectification. A signal isolation device should be utilized if a
full wave bridge signal generating device is used.
LINE
VALUE
NO.
25 0 (Setpoint Occupied)
PATH VALUE

SLCT Setpoint Occ
LINE
VALUE
NO.
25 1 (Set Point 1)
PATH VALUE

SLCT Setpoint 1
LINE
VALUE
NO.
25 2 (Set Point 2)
PATH VALUE

SLCT Setpoint 2
The following equation is used to control the set point. See
Fig. 20.
Fahrenheit Set Point = 10 + 70(mA – 4)/16 (deg F)
Celsius Set Point = –12.2 + 38.9(mA – 4)/16 (deg C)
To configure this option while using a Touch Pilot display:
DISPLAY NAME
Setpoint select Status
To change this value, a Control Point Force must be applied.
When configured correctly, Setpoint Control will indicate 4-
20 mA.
To configure this option while using a Navigator display:
ITEM ITEM EXPANSION
SP.SE Setpoint Select
Dual Switch — When Set Point Select (Setpoint Select,
SP.SE) is configured to 4 (Dual Setp Sw), the unit's active set
point is based on Cooling Set Point 1 (Cooling Setpoint 1,
CSP.1) when the Dual Set Point switch contact is open and
Cooling Set Point 2 (Cooling Setpoint 2, CSP.2) when it is
closed.
To configure this option while using a Touch Pilot display:
DISPLAY NAME
Setpoint select Status
To change this value, a Control Point Force must be applied.
When configured correctly, Setpoint Control will indicate
Setp Sw.
To configure this option while using a Navigator display:
ITEM ITEM EXPANSION
SP.SE Setpoint Select
Chilled Water Fluid Type Selection —
water fluid must be configured. The fluid type must be config-
ured to obtain the proper leaving water set point control range
and freeze protection. The Cooler Fluid Type (Cooler Fluid
Type, FLUD) can be set to water or brine.
FRESH WATER — Configure the unit for Cooler Fluid Type
(Cooler Fluid Type, FLUD) to water for units without brine or
glycol installed in the chilled water loop. The factory default
fluid type is fresh water. Use this option for fresh water sys-
tems. This will allow for a water temperature set point of 38 to
60 F (3.3 to 15.5 C). With water as the selection, the Freeze
Point is fixed at 34 F (1.1 C).
To configure this option with the Touch Pilot display:
DISPLAY
NAME
Cooler
Main Menu
Fluid Type
To configure this option with the Navigator display:
ITEM ITEM EXPANSION
FLUD Cooler Fluid Type
28
LINE
PATH VALUE
NO.

GENUNIT 25 3 (4-20 mA Input)
PATH

Operating Modes SLCT 4-20 mA Setp
LINE
PATH VALUE
NO.
 4 (Dual
GENUNIT 25
Setpoint Switch)
PATH

Operating Modes SLCT
LINE
PATH
NO.
 
Service SERVICE1 1
PATH

Configuration SERV
VALUE
VALUE
Dual
Setp Sw
The chilled
VALUE
1 = Water
VALUE
Water