Copyright © D 369 -10/00
9 of 32
Item
Menu
Schd
Adjust
Zone 2
Zone 1
Zone 2
Zone 3
Zone 4
Setback Period
10 P.M. 12 A.M. 2 A.M. 4 A.M. 6 A.M.
Optimum Stop
Optimum Start
Section C: UnOccupied
SETBACK (UNOCCUPIED)
To provide greater energy savings, the 369 can lower the building temperature at night or when the building is unoccupied. The 369
has a built-in clock which allows for heating and cooling setback capabilities. As an option, an external timer may be connected to
provide a separate setback signal. When in the unoccupied mode, the
UnOcc segment is displayed in the appropriate LCD. The 369
operates the zones based on the
UnOcc settings made in the control and / or display RTUs. With display RTUs, the desired zone
temperature is set using the HEATING
UnOcc adjustment in the Adjust menu of the RTU. With non-display RTUs or indoor sensors,
the desired zone temperature is set using the HEATING
UnOcc adjustment in the Zone Adjust menu of the control. If cooling control
(CTRL) is selected, the desired cooling temperature is set using the COOLING
UnOcc adjustment in the Adjust menu of RTU 6. The
setback feature is enabled by setting the
Setback / None DIP switch to the Setback position, and selecting a desirable schedule. As
well, a schedule override or an external unoccupied override can enable the setback feature.
Clock
The clock in the 369 is used for setback purposes. In order to set the clock, the
Setback / None DIP switch must be in the Setback
position. The clock is accessed in the Time menu of the control. The clock displays the time of day and the day of the week. Setting
of the clock is described in the Settings section of this brochure.
SCHEDULE
The 369 provides a control schedule and a zone schedule. Non-display RTUs and indoor
sensors may only select the control schedule, while display RTUs have the option to select
either the control schedule or its own zone schedule. Each schedule allows two occupied
and two unoccupied events each day. During the first event, the
1 segment is displayed
in the appropriate LCD, and during the second event, the
2 segment is displayed. Setting
of a schedule is described in the Settings section of this brochure.
Zone Schedule (ZONE)
The zone schedule allows each zone to have its own independent schedule. A zone
schedule is only available for zones using display RTUs. The ZONE schedule is
accessed through the HEAT SCHD adjustment in the schedule (Schd) menu of the RTU.
Control Schedule (CTRL)
The control schedule allows each zone to be on the same schedule. When using display
RTUs, the CTRL schedule is accessed through the HEAT SCH adjustment in the
schedule (Schd) menu of the RTU. When using non-display RTUs or indoor sensors,
the CTRL schedule is accessed through the HT SCHD adjustment in the Zone Adjust
menu of the control.
Cooling Schedule
The 369 allows the heat / cool RTU (
tN1 6) to select a schedule for cooling. The COOL SCH adjustment in the schedule (Schd)
menu of the RTU may be set to CTRL to use the control schedule, or ZONE to use the zone schedule.
Note:
If cooling enable (ENBL) is selected and the control is in unoccupied mode, the control does not operate the
Cooling relay.
OPTIMUM START / STOP
The Optimum Start / Stop feature is used during transitions between
the unoccupied mode and the occupied mode. If Optimum Stop is
selected, the control turns off the zone valve or pump before the start
of the setback period. Therefore, the zone starts to cool down at the
beginning of the UnOccupied period. If Optimum Start is selected, the
369 raises the zone temperature during the final stages of the
unoccupied period. This ensures the zone is at the occupied tem-
perature as soon as the occupied period begins.
The Optimum Start / Stop function may be selected for each zone to
provide optimum start (STRT), optimum stop (STOP), or optimum
start and stop (BOTH). For display RTUs this setting is selected
through the OPT STRT adjustment in the schedule (Schd) menu of
the RTU. For non-display RTUs or indoor sensors, the Optimum Start
/ Stop setting is selected through the HEAT OPT adjustment in the
Zone Adjust menu of the control.
If cooling control (CTRL) is selected, Optimum Start may be selected for cooling. If Optimum Start is selected, the control operates
the
Cooling relay to ensure the cooling group is at the occupied temperature as soon as the occupied period begins. This function
is enabled by selecting STRT through the COOL OPT adjustment in the Control Adjust menu of the control.
- 01/09
- 01/09
