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www.DaikinApplied.com 19
IM 1234-1 • BACNET THERMOSTAT
Set Fan Coil Unit System Options
The items in the system menu control application specific
functions for fan coil units. Entering the system options
requires entering Password 2.
Table 11: Set Fan Coil Unit System Options
Procedure
Steps
Display
Starting display
1. Start at the temperature display.
2. Enter Password 2. The display changes to the MAIN menu
display.
Choose and set the fan coil system options
1. From the MAIN menu, press either the
▲
or
▼
button to
select SYSTEM.
2. Press Enter. The SYSTEM menu opens.
3. Choose any of the following items.
•
LOCAL OVRD TIME
•
FAN OFF DELAY
•
OCCUPIED FAN
•
CL VALVE ACTION
(Four-pipe only)
•
HT VLV ACTION
(Four-pipe only)
•
VLV ACTION
(Two-pipe only)
•
FAN MAXIMUM
(Modulating fans only)
•
FAN MINIMUM
(Modulating fans only)
•
FAN SPEEDS
(Three speed fans only)
•
AUX HEAT
(Two-pipe only)
Set the local override time
From the SYSTEM menu choose LOCAL OVRD TIME to
set the time the BACnet Thermostat will hold an override
temperature setpoint as the active setpoint. At the end of the
period, the BACnet Thermostat will use either an occupied or
unoccupied setpoint as the active setpoint.
Set the fan delay
From the SYSTEM menu choose FAN DELAY OFF to set the
time the system fan will continue to run after the last heating
or cooling stage is turned OFF.
Set the occupied fan control
From the SYSTEM menu choose OCCUPIED FAN to choose
the following:
• When ON, the fan will run continuously when the
schedule is occupied (ON)
• When the schedule is unoccupied (OFF) the fan will run
only when there is a call for heating or cooling
Set the valve action
Select one of the valve actions from the SYSTEM menu. Not
all choices apply to every application.
•
CL VALVE ACTION
– (Four-pipe only)
•
HT VLV ACTION
– (Four-pipe only)
•
VLV ACTION
– (Two-pipe only)
Valve action selections are the same for all three types of
valves.
•
NORMAL OPEN
– The valve changes from fully open to
fully closed as the BACnet Thermostat varies the valve
output from 0 to 10 volts
•
NORMAL CLOSED
– The valve changes from fully
closed to fully open as the BACnet Thermostat varies the
valve output from 0 to 10 volts.
