1. Introduction
The LILYTECH ZL-7918A is an advanced intelligent temperature and humidity controller designed for precise environmental management. It offers stable and reliable performance, making it ideal for applications such as incubators, climate chambers, and warehouses. This manual provides comprehensive instructions for the installation, operation, and maintenance of your ZL-7918A controller.
Figure 1: LILYTECH ZL-7918A controller with connected temperature and humidity sensors, showing the main unit and external probes.
2. Key Features
The ZL-7918A controller is equipped with a range of features to ensure optimal environmental control:
- Temperature Control: Precise management of heating elements.
- Humidity Control: Accurate regulation of humidity levels.
- Lighting Control: Manages illumination cycles.
- Auxiliary Heating: Supports an additional heating output.
- Egg Turning Control: Configurable periods and durations for automatic egg turning (left and right).
- Timing Ventilation Control: Schedules ventilation cycles.
- Alarm Control: Alerts for deviations from set parameters.
- Temperature and Humidity Calibration: Allows for sensor calibration to maintain accuracy.
- Hatching Day Display: Tracks and displays the number of hatching days (up to 99 days).
3. Setup and Installation
3.1 Device Dimensions and Installation
The ZL-7918A controller has a device size of 160x80x95 mm. The recommended installation drilling size for mounting is 151.5x76.5 mm.
3.2 Wiring Instructions
Proper wiring is crucial for the safe and correct operation of the controller. Refer to the wiring diagram below for connections. Ensure all connections are secure and follow local electrical codes.
Figure 2: Rear view of the ZL-7918A controller, displaying the terminal block for electrical connections.
Figure 3: Detailed wiring diagram for the ZL-7918A controller, illustrating connections for power supply, sensors, and output loads.
Power Supply: Connect AC100~240V 50/60Hz to terminals L and N (13 and 14).
Sensors:
- Humidity Sensor: Connect the Red, Yellow, Black, and Orange wires to terminals 1, 2, 3, and 4 respectively.
- Temperature Sensor: Connect to terminals 5 and 6.
Figure 4: ZL-SHr05A Humidity Sensor, showing its compact design and connection points. This sensor is designed for accurate humidity measurement within a range of 0-80% RH.
Output Control: The controller provides 7 output controls. Ensure the load for heaters does not exceed 1500W, illumination does not exceed 100W, and humidity, fan, and egg turning outputs do not exceed 1A/250Vac.
- Fan: Terminals 15 (COM) and 16.
- Egg Turning Left: Terminals 15 (COM) and 17.
- Egg Turning Right: Terminals 15 (COM) and 18.
- Humidity: Terminals 15 (COM) and 19.
- Illumination (Lamp): Terminals 15 (COM) and 20.
- Auxiliary Heater (HEAT2): Terminals 21 and 22.
- Main Heater (HEAT1): Terminals 23 and 24.
4. Operation
4.1 Display Overview
Figure 5: Front view of the ZL-7918A controller, highlighting the digital display and control buttons for setting parameters.
The controller features a clear digital display showing current temperature (PV TEMP), set temperature (SV TEMP), current humidity (PV WET%), and set humidity (SV WET%). Indicator lights show the status of various outputs (FAN, HEAT1, HEAT2, UP, DOWN, WET, ALARM, L/R for egg turning).
4.2 Setting Parameters
Use the "Set" button to enter the parameter setting mode and the arrow keys (Up/Down) to navigate and adjust values. The "Enter" button confirms selections.
- Temperature Setting Range: 1~65℃
- Humidity Setting Range: 10~80% RH
- Egg-Turning Control:
- Period: 1~999 minutes
- Turning Time: 0~999 seconds
- Turning Times: 0~999 times
- Ventilation Control:
- Period: 1~999 minutes
- Ventilating Time: 0~999 seconds
- Illumination Control:
- Period: 1~999 minutes
- Illuminating Time: 0~999 seconds
Refer to the detailed programming guide (not included in this general manual) for specific parameter codes and advanced settings.
5. Maintenance
To ensure the longevity and accuracy of your ZL-7918A controller, follow these maintenance guidelines:
- Cleaning: Regularly wipe the controller's surface with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Sensor Care: Keep the temperature and humidity sensors clean and free from dust or debris. Avoid exposing sensors to extreme physical shock or moisture beyond their operating limits.
- Connections: Periodically check all wiring connections to ensure they are secure and free from corrosion.
- Calibration: If accuracy issues are suspected, perform temperature and humidity calibration as per the advanced settings guide.
6. Troubleshooting
This section addresses common issues you might encounter with your ZL-7918A controller. For problems not listed here, please contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Controller does not power on. | No power supply; incorrect wiring. | Check power source (AC100~240V). Verify L and N wiring connections. |
| Inaccurate temperature/humidity readings. | Dirty or faulty sensor; need for calibration. | Clean sensors. Perform temperature and humidity calibration. Replace sensor if faulty. |
| Output (e.g., heater, fan) not activating. | Incorrect settings; faulty wiring; overloaded output. | Check set parameters. Verify output wiring. Ensure load does not exceed specified limits (e.g., heaters ≤ 1500W). |
| Alarm constantly active. | Parameters outside set limits; alarm threshold too narrow. | Adjust set temperature/humidity or alarm thresholds. Ensure environmental conditions are within desired range. |
7. Technical Specifications
| Parameter | Value |
|---|---|
| Power Supply | AC100~240V 50/60Hz |
| Temperature Sensor | 1 (L=2M) |
| Humidity Sensor | 1 (L=2M) |
| Humidity Setting Range | 10~80% RH |
| Temperature Setting Range | 1~65℃ |
| Humidity Display Range | 0~99% RH |
| Temperature Display Range | -20~80℃ |
| Humidity Measuring Accuracy | ±3% (under temperature 20~60℃) |
| Temperature Measuring Accuracy | ±1% |
| Output Control | 7 outputs (heater, aux-heater, fan, egg left-turning, egg right-turning, humidity, illumination) |
| Heater Output Load | ≤ 1500W |
| Illumination Output Load | ≤ 100W |
| Humidity, Fan, Egg Turning Output Load | ≤ 1A/250Vac |
| Hatching Day Record | Max 99 days |
| Operation Environment | -10~45℃, <90%RH without dew |
| Device Size | 160x80x95 mm |
| Installation Drilling Size | 151.5x76.5 mm |
| Material | Plastic |
| Display Type | LCD or LED |
8. Warranty Information
LILYTECH products are manufactured to high quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or contact LILYTECH customer support directly. Keep your purchase receipt as proof of purchase for any warranty claims.
9. Customer Support
If you require further assistance or have questions regarding your ZL-7918A controller, please contact LILYTECH customer support. Contact details can typically be found on the product packaging or the official LILYTECH website.
For technical inquiries, please have your product model (ZL-7918A) and a detailed description of the issue ready.
