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There are several ways to define thermostat occupancy state.
Note:
Occupancy will be
detected by ESI contact by default.
1. Energy Savings Input (ESI) This is a dry contact input meant for communication
from a customer supplied occupancy sensor. (default)
2. Occupancy status (occupied/unoccupied) can be set by a BACnet supervisor using
writable object
ESI Contact Definition
[
BV14
]. “0” for occupied, and “1” for
unoccupied. E12/AV18 must be set with a value of 64 (disabled) in advance
(E12/AV18 is set as 0 by default)
3. User control of occupancy state is allowed from the SET button if E12/ AV18 Lock
has the ESI Contact disabled. Pressing the SET button and UP/DOWN buttons will
toggle the occupancy state. Press SET button to confirm. The SET button can
work in conjunction with
BACnet occupancy Command
[
BV14
] on last-write-wins
basis. The SET button could be locked to limit user control (use
Lock
[
AV18
]
BACnet object or (
LOC
) engineering menu item to lock SET button). In this case
only the BACnet supervisor can set occupancy states.
•
Occupancy Status
[
BI0
] is a read-only BACnet object indicating current occupancy
state -“0” for occupied, and “1” for unoccupied. (AV18 is set as 0 by default).
•
When in unoccupied state, a Moon ( ) icon will be displayed on the LCD and the
thermostat will change the set-point temperatures to the
Unoccupied Cool
and
Unoccupied Heat
setpoints
[
AV8 – 9
]. When the state changes back to occupied, the
thermostat will return to the occupied set-point values for
Cooling
and
Heating
Temperature Setpoint
[
AV0, AV3
] and a sunlight icon (
) will be displayed to
indicate occupied state on LCD
4.3
Engineering Mode Menu
Thermostat configuration can be performed using the engineering menu or by controlling
BACnet objects using a BACnet client tool such as Contemporary Controls free BACnet
Discovery Tool (BDT). It is highly suggested that engineering mode be operated by trained
installers only, because it is related to system parameters that will affect the control results.
Operation of Engineering Menu
•
At power “ON,” press and hold both the UP and DOWN buttons simultaneously for 5
seconds to enter Engineering Mode menu.
•
Press the UP or DOWN buttons to rotate through the menu items. The last item loops
back to first item at the end of items in menu. Press the MODE button to enter a
submenu item.
•
Press the UP or DOWN button to change the setting in the submenu item. Press the
MODE button to confirm the setting and return to menu item selection. If no button is
pressed for 10 seconds, the display will return to the menu item selection. After
another 10 seconds, the display will return back to User mode. Settings are not
changed unless confirmed using the MODE button.
•
To leave Engineering Mode, rotate till (End) menu item appears and press the MODE
button. Alternately, pressing no buttons for 10 seconds will return the thermostat back