Displaying Temperature Data On Screen; Compressor Restart Time Delay; Alarm Output Contact; Alarm Input Connection - nvent SPECTRACOOL G52 Instruction Manual

TO RESET THE ALARMS IN ALARM HISTORY FOLDER
The controller is designed with ability to reset or clear the alarm history
1. Follow instructions above to enter the passcode and open the reset folder (rStF).
2. The screen displays rSAL on line 2 and nO on line 1, press
3. Press arrow to change nO to YeS, then press
once and returns to rSAL with nO one line 2
4. Press arrow to navigate to ESC, then press
5. Press arrow to navigate to LOG Out, then press
action for longer than 60 seconds the screen will be automatically reverted to the main screen.
TO RESET PARAMETERS TO FACTORY DEFAULT
This option is ONLY applied if the operator wants to reset all control parameters back to factory default.
1. Follow instructions above to enter the passcode and open the reset folder (rStF).
2. The screen displays rSAL, press
3. The screen displays rSPA one line 1 and the word nO on line 2 in steady state, press
then the word nO is flashing and ready to change
4. Press arrow to change nO to YES. Press
5. Press button to enter to passcode. Press
6. Press arrow to change 0 to 2, press
7. The screen returns to rSPA screen in steady state.
8. Press arrow to navigate to ESC, then press
9. Press arrow to navigate to LOG Out, then press
action for longer than 60 seconds the screen will be automatically reverted to the main screen.

DISPLAYING TEMPERATURE DATA ON SCREEN

There are two temperature probes in the air conditioner where one is reading the enclosure air temperature
incoming to the air conditioner and other is reading the cooled air leaving the air conditioner and entering the
enclosure. Both temperature data are displayed on the screen where line 1 is the reading of the inlet temperature
and line 2 is the reading of the outlet temperature.

COMPRESSOR RESTART TIME DELAY

A factory set 3 minute (180 seconds) 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 compressor icon
mode while calling for cooling or waiting for compressor to turn ON.

ALARM OUTPUT CONTACT

The digital controller has a normally open dry contact alarm output with a resistive load rating of 250VAC @ 5
amps max. The two yellow 18 AWG wires located at the back of the air conditioner provide a connection to this
output. Note: do not apply power to this normally open dry contact (two yellow 18 AWG wire). This alarm relay
output is configurable and provides user with the ability to change the configuration to support their external
device. Parameter C21 controls the alarm relay output logic and can be accessed through security code "0022" in
the PArF folder.
Para Description
C21 Alarm relay output logic

ALARM INPUT CONNECTION

The digital controller can accept a dry contact/switch input via the two 18 AWG white wires located at the back
of the air conditioner. This input is associated with the controller display alarm mnemonic dO (door open). To use
this feature, remove the splice connector, and connect the two white wires to customer supplied enclosure door
switch in its place. Note: do NOT apply power to this dry contact input.
89209668
button reset the alarms. The screen flashes
to returns to rStF screen.
button to return to the main screen or if no
arrow to navigate to rSPA and then press
button the screen displays PSd with 0000 on line 2
button few times until the last digit of 0000 flashing
button to authorize the reset of the parameters
to returns to rStF screen.
button to return to the main screen or if no
on the display indicating that the unit is in a compressor restart delay
Configuration
0 = normally open (NO) – factory default
1 = normally closed (NC)
© 2022 nVent
button the nO is flashing
button
button and
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