EHEIM Jager Aquarium Thermostat Heater 125W Instruction Manual

Introduction

The EHEIM Jager Aquarium Thermostat Heater 125W is designed to maintain a stable and precise temperature in your aquarium. This heater is fully submersible and features a TruTemp dial for accurate temperature recalibration. Constructed from shock-resistant and shatter-proof glass, it is suitable for both fresh and marine water environments. This manual provides essential information for the safe and effective use of your heater.

Safety Instructions

• Always disconnect power to all aquarium equipment before performing maintenance or handling the heater.
• Ensure the heater is fully submerged in water before connecting it to a power source. Operating the heater out of water can cause damage and create a fire hazard.
• Do not operate the heater if the glass tube is cracked or damaged.
• Keep the power cord and plug dry. Do not use if the cord or plug is damaged.
• This appliance is intended for indoor use only, specifically for aquariums.
• Position the heater away from strong currents to ensure even heat distribution.
• The heater features a thermo safety control that automatically turns off if the water level dips too low, protecting against dry running. However, regular monitoring of water levels is recommended.

Package Contents

Verify that all items are present in the package:

• EHEIM Jager Aquarium Thermostat Heater 125W
• Mounting Bracket
• Two Suction Cups

Setup

1. Placement: Select a location in your aquarium where water circulation is good to ensure even heat distribution. The heater can be placed vertically or at an angle, ensuring it is fully submerged.
2. Mounting: Attach the suction cups to the mounting bracket. Securely press the suction cups against the inside glass of your aquarium to hold the heater in place.
3. Submersion: Ensure the heater is completely submerged in water before plugging it into a power outlet. The heater is designed to be fully submersible.
4. Initial Temperature Setting: Rotate the TruTemp dial to your desired temperature. It is recommended to start with a setting close to your target temperature.
5. Calibration (TruTemp Dial): The TruTemp dial allows for recalibration within +/- 0.5°F for precise temperature readings. After 24 hours of operation, use a separate, accurate aquarium thermometer to check the actual water temperature. If there is a discrepancy, adjust the TruTemp dial slightly until the desired temperature is consistently maintained.
6. Power Connection: Once the heater is securely mounted and fully submerged, plug it into a grounded electrical outlet.

Image 1: EHEIM Jager Aquarium Thermostat Heater 125W. This image shows the heater unit alongside its retail packaging, illustrating its overall design and presentation.

Operating Instructions

• Temperature Control: The heater will automatically turn on and off to maintain the set temperature. Monitor the aquarium temperature daily with a reliable thermometer.
• Indicator Light: An integrated On/Off indicator light provides at-a-glance monitoring. The light illuminates when the heater is actively heating and turns off when the set temperature is reached.
• Temperature Adjustment: If the desired temperature changes, unplug the heater, wait a few minutes for it to cool, then adjust the TruTemp dial to the new setting. Re-submerge and plug in. Allow 24 hours for the temperature to stabilize and verify with an external thermometer.

Maintenance

• Cleaning: Periodically clean the heater's glass tube to remove algae or mineral deposits. Always unplug the heater and allow it to cool completely before removing it from the water for cleaning. Use a soft cloth or sponge; avoid abrasive materials.
• Inspection: Regularly inspect the heater for any signs of damage, such as cracks in the glass, frayed power cords, or loose connections. If any damage is observed, discontinue use immediately and replace the unit.
• Suction Cups: Check the suction cups periodically for wear and tear. Replace them if they lose their grip to ensure the heater remains securely in place.

Troubleshooting

Specifications

Image 2: EHEIM Jager Aquarium Thermostat Heater 125W dimensions. This image provides a visual representation of the heater's length, indicating it is approximately 14 inches (34 cm) long.

• Model: 3615090
• Wattage: 125 Watts
• Recommended Tank Volume: Up to 53 Gallons (approx. 200 Liters)
• Material: Shock-resistant and shatter-proof glass
• Dimensions (Heater): Approximately 1.42 inches (diameter) x 12.56 inches (length)
• Item Weight: Approximately 10.2 ounces
• Features: Fully submersible, TruTemp dial for recalibration, Thermo safety control, On/Off indicator light.
• Included Components: Heater unit, mounting bracket, 2 suction cups.

Warranty and Support

For detailed warranty information and customer support, please refer to the official Eheim manufacturer website. The manufacturer is Eheim.

Manufacturer: Eheim

Warranty Description: Please see manufacturer website for details.