XW20L
XW Series • HVAC Controller
Quick Info
Output Functions
Chiller controller with advanced protection features
Technical Specifications
Display & Interface
| Display Type | LED |
| Display Digits | 4 |
| Buttons | 5 |
| LED Indicators | Comp 1, Comp 2, Pump, Alarm |
Power Supply
| Voltage | 230V AC |
| Voltage Range | 100-240V AC |
| Frequency | 50/60Hz |
| Power Consumption | 6VA |
Sensor Inputs
| Probe Inputs | 4 |
| Probe Type | NTC / PT1000 |
| Temp Range | -50 to 150°C |
| Accuracy | ±0.3°C |
Relay Outputs
| Relay Outputs | 5 |
| Relay Rating | 8A/250VAC |
Physical
| Panel Size | 71x29 mm |
| Depth | 70 mm |
| IP Rating | IP65 (front) |
| Weight | 150 g |
Operating Conditions
| Operating Temp | -10 to 55°C |
| Storage Temp | -30 to 70°C |
Wiring Terminals
| Terminal | Function | Type | Wire Color |
|---|---|---|---|
| L | Power L | Input |
brown
|
| N | Power N | Input |
blue
|
| Pb1 | Outlet Water | Input |
red/white
|
| Pb2 | Inlet Water | Input |
red/white
|
| Pb3 | Ambient | Input |
red/white
|
| Pb4 | Auxiliary | Input |
red/white
|
| DI1 | Flow Switch | Input |
gray
|
| DI2 | HP Switch | Input |
gray
|
| R1 | Compressor 1 | Output |
black
|
| R2 | Compressor 2 | Output |
black
|
| R3 | Pump | Output |
blue
|
| R4 | Fan | Output |
green
|
| R5 | Alarm | Output |
red
|
Important: Always disconnect power before wiring. Verify terminal numbers with the actual controller label before connecting.
Parameter Settings
| Code | Parameter | Range | Default | Description |
|---|---|---|---|---|
| SEt | Setpoint | -10 to 25 | 7 °C | Chilled water setpoint |
| Hy | Differential | 0.5 to 10 | 3 °C | Stage 1 differential |
| Hy2 | Stage 2 Diff | 0.5 to 10 | 5 °C | Stage 2 differential |
| AFL | Antifreeze | -5 to 5 | 3 °C | Antifreeze setpoint |
| Pdt | Pump Delay | 0 to 15 | 1 min | Pump pre-run time |
| CdL | Stage Delay | 0 to 30 | 5 min | Delay between stages |
Error Codes
Solution: Check water outlet probe
Solution: Check water inlet probe
Solution: Check pump and flow switch
Solution: Water temp too low
Solution: Check condenser
Frequently Asked Questions
Pump runs continuously and compressors stop if water temp drops below AFL setpoint
Alternative Models (Cross Reference)
Manufacturer Information
Brand: Dixell
Country: Italy
Parent: Emerson Climate Technologies