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SWITCH FUNCTIONS
(A) SWITCH 1 is used to lock the thermostat. When the
thermostat is locked (ON posi� on) a padlock icon will show
on the LCD. When locked, only setpoint changes and status
func� ons can be accessed by the user. Do not set Switch 1 in
the ON posi� on un� l all SETUP func� ons are completed.
(A) SWITCH 2 displays the space temperature and setpoint
in Fahrenheit (OFF posi� on - factory default) or Celsius (ON
posi� on. Select For C before proceeding to SETUP menu.
(A) SWITCH 3 is used to select fully modula� ng
(OFF posi� on - factory default) or two-posi� on (ON posi� on)
damper control to best suit the specifi c applica� on requirement.
(A) SWITCH 4 & 5 have no func� on.
(A) SWITCH 6 Switch 6 is used to display or hide the Heat and
Cool on the LCD. OFF posi� on displays Heat and Cool. ON
posi� on hides Heat and Cool.
(A) SWITCH 7 When switch 7 if OFF, both the space temperature
and set temperature are displayed. When switch 7 is ON, only
the set temperature is displayed.
(A) SWITCH 8 has no func� on.
(B) SWITCH 1
Switch 1 should remain OFF for Modbus. It is only used as an end
of the line resistor on a large network where communica� ons
issues might exist. Consult factory for addi� onal informa� on.
(B) SWITCH 2 & 3
When the internal sensor is used, Switch 2 is ON and Switch 3
is OFF.
When a remote sensor is used, Switch 2 is OFF and Switch 3 is
ON.
KEY FUNCTIONS
ON/OFF KEY - When the thermostat is not locked, this key
allows the thermostat to be turned ON and OFF. When in the
OFF posi� on, the damper is also driven closed.
STATUS KEY - Pressing the STATUS key displays the UNIT number,
ZONE number, DUCT temperature and DAMPER posi� on.
∆
UP(
) and DOWN ( ) KEYS - These keys are used to increase
or decrease the setpoint as well as change thermostat setup
values.
SETUP KEY - This key allows the installer to toggle through the
thermostat setup menu.
ENTER KEY - This key is used to enter changes as well as exit
the setup menu.
Date: 8-2021
Supersedes: NEW
Nailor reserves the right to change any information concerning product or specification without notice or obligation.
Installation and Operation Manual
UNI2-VAV Electronic Thermostat
●
MODBUS
SENSOR
ON/OFF
STATUS
UP
7 of 12
INTERNAL OR
REMOTE SENSOR
SWITCHES
ENTER
SETUP
DOWN
IOM-UNIVAVETINST
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