While Qidi states that the X Smart 3 can print ABS/ASA, the stock printer can not realistically reach an adequate chamber temperature (50℃) with just the hotend and bed heaters. Thankfully the controller board has an adequate number of unused connections to add a dedicated chamber heater.
The parts I used are:
Connect your chamber thermistor to the connector marked TH as shown above.
The connector to its left (labeled 5v) can be used as the control pins for the SSR.
The PTC heater's fan can be controlled with the port on the right of the board labeled THCY.
Copy the heater.cfg to your printer and be sure to include it near the bottom of your printer.cfg.
With this configuration you can simply check the box in your slicer for chamber temp (as shown below in Orca Slicer's filament settings)
When activated, the generated g-code should heat the chamber to the desired temperature at the start of the print.
Additionally, the delayed g-codes will monitor for the end of the print and engage the printer's exhaust fan to cool the chamber after the print.
Once everything is wired and the configuration put in place, I suggest PID tuning the heater with the following:
PID_CALIBRATE HEATER=chamber TARGET=60