© 2018 nVent
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MODELS WITH °F CONTROLLER
Cooling turns ON at r01 (setpoint) + r02 (differential), and OFF at r01 (setpoint).
For example, using default values form the table below, cooling will turn ON at 87°F (se
differential), and turn OFF at 80°C (setpoint).
OPERATING PARAMETERS
Parameter
Description
Default Value
Range
r01
Cooling set-point
80 F
72 F to 120 F
r02
Cooling differential
7 F
-
P08
Door Open and/or smoke detected
28
4 or 28
ALARM PARAMETERS
Parameter
Description
Default Value
Range
P16
High Temperature Alarm
125 F
-
P19
Low Temperature Alarm
40 F
-
OPERATING REAL-TIME CLOCK (RTC) PARAMETERS
Parameter
Description
Default Value
Range
t01
Hour
0
0 to 23
t02
Minute
0
0 to 59
t03
Day
1
1 to 31
t04
Month
1
1 to 12
t05
Year
3
3 to 99
DISPLAYING TEMPERATURE SENSOR #2
Both the air inlet sensor (b01) and outlet or evaporator coil sensor (b02) can be reviewed at any time by
pressing the up and down arrow button on the front panel of the controller display. The display will revert to the
temperature sensor number b01 (air inlet temperature) or b02 (air outlet temperature) after 60 seconds. Both
sensors can also be read through the Ethernet and USB connections with optional remote access communication
board.
COMPRESSOR RESTART TIME DELAY
A factory set 5 minute (360 second) restart delay exists to reduce residual back pressure before allowing the
compressor to restart. The compressor will stay off for the entire restart duration after the compressor is
disabled. A flashing “1” on the controller display will indicate the unit is in a compressor restart delay while calling
for cooling. If the delay time is reduced to less than 5 minutes, this may cause reduced compressor life.
ALARM OUTPUT CONTACT
The smart controller has a normally open dry contact alarm output with a resistive load rating of 250 VAC to
3 Amp. The 6-POS connector terminals 3 and 4 (marked YEL/ALARM) located on the enclosure side of the
unit provides a connection to this output. The optional Remote Access Communication board can accept this
normally open dry contact alarm from the smart controller..
ALARM INPUT CONNECTION
The smart controller can accept a dry contact/switch input via the 6-POS connector terminals 1 and 2 (marked
WHT/DS1 and WHT/DS2), located on the enclosure side of the unit. This input is associated with the controller
display alarm mnemonic “tP” (door open and/or smoke detected). Note that the door open and/or smoke
detected is pre-programmed at the factory as “Normally Open”. The optional Remote Access Communication
board can accept this door open and/or smoke detected alarm from the smart controller. To use this feature,
simply connect the customer supplied wires from the cabinet door switch to DS1 and DS2 terminals.
ALARM CONDITION DISPLAY
There are eleven possible non-latching alarm conditions detectable by the controller and are indicated on the
controller display. All alarms can also be accessed through the Ethernet and USB connections with the optional
remote access communication board.
