39
Table 26 — Entering Configuration Codes
SCHEDULE FUNCTION — This function provides a means
to automatically switch the chiller from an occupied mode to
an unoccupied mode. Refer to Table 27 for a complete descrip-
tion of the function.
The schedules consist of 8 user-configurable occupied time
periods. The control supports time schedules for local control,
remote control and ice building. These time periods can be
flagged to be in effect or not in effect on each day of the week.
The day begins at 00.00 and ends at 24.00. The machine is in
unoccupied mode unless a scheduled time period is in effect. If
an occupied period is to extend past midnight, it must be pro-
grammed in the following manner: occupied period must end
at 24:00 hours (midnight); a new occupied period must be pro-
grammed to begin at 00:00 hours.
NOTE: This is true only if the occupied period starts at 00:00
(midnight). If the occupied period starts at a time other than
midnight, then the occupied period must end at 24:00 hours
(midnight) and new occupied period must be programmed to
start at 00:00 in order for the chiller to stay in the occupied
mode past midnight. Each time schedule can be overridden to
keep the chiller in an Occupied mode for 1, 2, 3 or 4 hours on a
one-time basis.
Dual Set Point Control — This feature can be enabled to
allow the use of a second or unoccupied cooling set point. The
function can be either switch controlled or clock controlled. To
enable switch control, set the Cooling Setpoint Select under
to 1. See page 74 or 75 of Field Wiring section,
depending on unit type, for switch input wiring to the PSIO-2
module. Configure Cool Setpoint 2 under
to the
desired value. The unit will then control leaving water temper-
ature to Cool Setpoint 2 when the switch input is closed. To
enable clock control, set the Cooling Setpoint Select under
to 2. Set Cool Setpoint 2 to the desired unoccupied
value. Using
, configure local operating schedules for
the desired occupied and unoccupied time periods. The unit
will then control leaving water temperature to Cool Setpoint 2
during unoccupied time periods.
KEYPAD ENTRY
DISPLAY RESPONSE
FACTORY CODES
Configuration Code 1
00000000
Configuration Code 1
21660010
Configuration Code 2
00000000
Configuration Code 2
13900000
Configuration Code 3
00000000
Configuration Code 3
00000200
SERVICE CODES
Configuration Code 4
00000000
Configuration Code 4
12200521
Configuration Code 5
00000000
Configuration Code 5
00000058
ENTER
ENTER
ENTER
ENTER
ENTER
