1. Introduction
The Pymeter PY-20TT-16A is a digital dual temperature controller designed for precise temperature management in various applications. It features two independent outlets and two temperature probes, allowing for simultaneous control of heating and cooling devices across two distinct zones. This manual provides detailed instructions for safe installation, operation, and maintenance of your device.
2. Safety Information
- Read all instructions carefully before use.
- Ensure the power supply voltage matches the device's requirements (85-250VAC).
- Do not exceed the maximum load capacity of 16A / 1920W.
- Avoid exposing the controller to water or high humidity environments.
- Do not disassemble or modify the device. Refer all servicing to qualified personnel.
- Keep out of reach of children.
- Always unplug the device from the power outlet before cleaning or performing maintenance.
3. Product Overview
The Pymeter PY-20TT-16A integrates two temperature controllers into a single unit, offering versatile temperature management.
Image: Front view of the Pymeter PY-20TT-16A controller, showing the digital display, control buttons, and two power outlets.
3.1 Components
- Digital Display: Shows current temperature (PV) and set temperature (SV) for both channels.
- Control Buttons: SET, SAV, Up (▲), Down (▼) for navigation and parameter adjustment.
- Outlets (OUT1, OUT2): Standard AC outlets for connecting heating or cooling devices.
- Temperature Probes: Two NTC sensors for accurate temperature measurement.
Image: Close-up view of the Pymeter PY-20TT-16A highlighting the dual temperature probes and dual power outlets.
4. Setup Instructions
- Placement: Mount the controller in a dry, stable location away from direct heat sources or excessive moisture. Ensure good ventilation around the unit.
- Connect Sensors: Insert the two temperature probes into their respective ports on the controller. Place the probe tips in the areas where temperature needs to be monitored and controlled.
- Connect Devices: Plug your heating or cooling devices into the OUT1 and OUT2 outlets on the controller. Ensure the devices' power consumption does not exceed the controller's maximum rating.
- Power On: Plug the controller's power cord into a standard 85-250VAC electrical outlet. The display will illuminate, showing the current temperature readings.
Image: Examples of the Pymeter PY-20TT-16A in use for reptile terrariums, greenhouses, and homebrewing, demonstrating probe and device placement.
5. Operating Instructions
5.1 Basic Temperature Setting
Each outlet (OUT1 and OUT2) can be configured independently for heating or cooling.
- Press the SET button once to enter the setting mode for OUT1. The PV (current temperature) and SV (set temperature) for OUT1 will flash.
- Use the ▲ (Up) and ▼ (Down) buttons to adjust the desired Start Temperature for OUT1.
- Press SET again to move to the Stop Temperature setting for OUT1. Adjust using ▲ and ▼.
- Repeat steps 2 and 3 for OUT2.
- Press SAV to save the settings and exit. If no button is pressed for 10 seconds, settings will automatically save and exit.
Image: Diagram illustrating the easy setup process for heating and cooling modes, showing start and stop temperature settings for an outlet.
5.2 Advanced Parameter Settings
To access advanced parameters, press and hold the SET button for 3 seconds until 'P0' appears on the display. Use ▲ and ▼ to navigate through parameters (P0-P8). Press SET to select a parameter, adjust its value, and then press SET again to confirm. Press SAV to exit the advanced settings menu.
| Parameter | Description | Range | Default |
|---|---|---|---|
| P0 (HC) | Heating/Cooling Mode | H (Heating) / C (Cooling) | H |
| P1 (D) | Hysteresis (Temperature Difference) | 0.1-30.0℃ / 0.1-54.0℉ | 2.0℃ / 3.6℉ |
| P2 (HA) | High Temperature Alarm | -50.0-120.0℃ / -58.0-248.0℉ | 120.0℃ / 248.0℉ |
| P3 (LA) | Low Temperature Alarm | -50.0-120.0℃ / -58.0-248.0℉ | -50.0℃ / -58.0℉ |
| P4 (CA) | Temperature Calibration | -10.0-10.0℃ / -18.0-18.0℉ | 0.0℃ / 0.0℉ |
| P5 (PT) | Compressor Delay Time | 0-10 minutes | 0 minutes |
| P6 (DA) | Temperature Difference Alarm | 0.0-10.0℃ / 0.0-18.0℉ | 0.0℃ / 0.0℉ |
| P7 (CF) | Temperature Unit | C (Celsius) / F (Fahrenheit) | F |
| P8 (RS) | Restore Factory Settings | ON / OFF | OFF |
Image: Visual representation of the controller's safety features, including high/low temperature alarms, temperature difference alarm, and power-on delay for compressor protection.
6. Maintenance
- Cleaning: Disconnect power before cleaning. Wipe the controller's surface with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Probe Care: Ensure temperature probes are clean and free from debris for accurate readings. Avoid bending or damaging the probe cables.
- Storage: If storing the device for an extended period, unplug it, clean it, and store it in a dry, cool place.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is off | No power, loose connection | Check power cord connection, ensure outlet is functional. |
| Inaccurate temperature reading | Sensor dirty or damaged, incorrect calibration | Clean sensor, check for damage. Perform temperature calibration (P4). |
| Device not turning on/off | Incorrect temperature settings, faulty device, compressor delay active | Verify Start/Stop temperature settings. Check connected device. Check P5 (Compressor Delay). |
| Alarm sounding | Temperature outside set limits (P2, P3), sensor difference (P6) | Check current temperature and alarm settings. Adjust as needed. |
8. Specifications
- Model: PY-20TT-16A
- Input/Output Voltage: 85-250VAC
- Max Load: 16A / 1920W
- Temperature Control Type: Heating, Cooling
- Temperature Range: -50.0℃ to 120.0℃ / -58.0℉ to 248.0℉
- Accuracy: ±0.1℃ / ±0.1℉
- Sensors: NTC x 2
- Display Type: LCD with Backlight
- Dimensions: 8.26 x 2.16 x 1.57 inches
- Item Weight: 1.14 pounds
- Material: PE, PS
Image: Diagram showing the physical dimensions of the Pymeter PY-20TT-16A controller.
9. Warranty & Support
Pymeter products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the contact information provided with your product packaging or visit the official Pymeter website. Please retain your proof of purchase for warranty claims.
