1. Introduction
The Intermatic FD2H 2-Hour Spring-Loaded Wall Timer is designed to replace standard wall switches, offering automatic control over lighting, fans, motors, and heaters. This mechanical timer operates without electricity, helping to limit the 'ON' time of connected loads and conserve energy. It is compatible with both standard and decorator style wall plates.
2. Product Overview and Features
The FD2H timer provides a simple, reliable solution for timed control of various electrical loads.
Figure 1: Front view of the Intermatic FD2H Wall Timer.
Key Features:
- No Electricity Required: Operates mechanically, consuming no power itself.
- Automatic Shut-off: Limits the 'ON' time for connected loads.
- Versatile Compatibility: Designed to replace any standard or decorator style wall switch.
- Easy Installation: Features 'up front' terminal connections with teeter-type terminals and a 'press-on' knob design.
- Load Compatibility: Suitable for incandescent, fluorescent, CFL, and LED lighting.
- No Neutral Connection: Does not require a neutral wire for operation.
Figure 2: Datasheet excerpt detailing features and electrical ratings for FD Series timers.
3. Setup and Installation
WARNING: To avoid fire, shock, or death, turn off power at the circuit breaker or fuse box and test that the power is off before wiring. Installation should be performed by a qualified electrician or in accordance with local electrical codes.
Installation Steps:
- Turn Off Power: Locate the circuit breaker or fuse that controls the switch you are replacing and turn it off. Verify power is off using a voltage tester.
- Remove Existing Switch: Carefully remove the existing wall plate and switch from the wall box. Disconnect the wires from the old switch.
- Wire the Timer: The FD2H timer typically has two wires for connection to the load and line. Connect the wires from the wall box to the timer's teeter-type terminals. Ensure connections are secure. Refer to the wiring diagrams below for specific configurations (SPST).
- Mount the Timer: Insert the timer into the wall box and secure it with the provided screws.
- Install Wall Plate: Attach your standard or decorator style wall plate over the timer. The FD2H is designed to fit both without field modifications.
- Attach Knob: Press the timer knob onto the timer shaft.
- Restore Power: Turn the power back on at the circuit breaker or fuse box.
Figure 3: Wiring diagrams for various FD Series timer applications, including SPST motor control.
The FD2H is a Single Pole Single Throw (SPST) timer. Ensure your application is compatible with an SPST configuration. For 3-way switch applications, consult a qualified electrician.
4. Operating Instructions
The Intermatic FD2H timer is simple to operate:
- To Activate: Rotate the timer knob clockwise to the desired 'ON' time (up to 2 hours). The timer will begin counting down immediately.
- Automatic Shut-off: The connected load will remain 'ON' for the set duration and then automatically turn 'OFF' when the timer reaches zero.
- Manual Override (OFF): To turn off the load before the set time expires, rotate the knob counter-clockwise past the 'OFF' position.
Figure 4: Example of an Intermatic FD2H Wall Timer installed in a residential setting.
5. Maintenance
The Intermatic FD2H timer is a mechanical device designed for long-term, maintenance-free operation. No internal user-serviceable parts are present.
- Cleaning: To clean the timer and wall plate, wipe with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Inspection: Periodically inspect the timer and wall plate for any signs of damage or loose connections. If damage is observed, turn off power at the circuit breaker and have the unit inspected by a qualified electrician.
6. Troubleshooting
If you experience issues with your FD2H timer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Timer does not activate load. | No power to the timer; incorrect wiring; faulty load. | Verify power at the circuit breaker. Check wiring connections (ensure line and load are correctly connected). Test the connected load (e.g., light bulb) with a known working switch. |
| Timer does not turn off load. | Timer mechanism issue; incorrect wiring for specific applications (e.g., 3-way switch incompatibility). | Ensure the knob is rotated fully to the desired time. If the issue persists, the timer mechanism may be faulty and require replacement. For 3-way switch setups, ensure the timer is installed in a compatible location or consult an electrician. |
| Inconsistent timing or premature shut-off. | Internal mechanism issue; excessive load. | Ensure the connected load does not exceed the timer's maximum ratings (see Specifications). If ratings are within limits, the timer mechanism may be faulty and require replacement. |
7. Specifications
Detailed technical specifications for the Intermatic FD2H Wall Timer:
- Model: FD2H
- Type: Spring-Loaded Mechanical Timer
- Time Cycle: 2 Hours
- Switch Type: SPST (Single Pole Single Throw)
- Color: Ivory
- Material: Plastic
- Electrical Ratings:
- 20 Amp, 125 VAC, 50/60 Hz
- 10 Amp, 250 VAC, 50/60 Hz
- 10 Amp, 277 VAC, 50/60 Hz
- 7 Amp, 125 VAC (Tungsten)
- 1 HP, 120 VAC, 50/60 Hz (Motor)
- 2 HP, 240 VAC, 50/60 Hz (Motor)
- Operating Temperature: -40°F to 104°F (-40°C to 40°C)
- Dimensions: 2.1 x 1.75 x 2.75 inches (Product)
- Item Weight: 4.8 Ounces
- Mounting Type: Wall
- UPC: 078275073999
Figure 5: Table showing various FD Series models, time cycles, and switch types.
8. Warranty Information
The Intermatic FD2H 2-Hour Spring-Loaded Wall Timer comes with a 1-year limited warranty. This warranty typically covers defects in materials and workmanship under normal use. In the event of a defect within the warranty period, the unit may be replaced. Please retain your proof of purchase for warranty claims.
For specific warranty terms and conditions, refer to the documentation included with your product or contact Intermatic customer support.
9. Customer Support
For further assistance, technical support, or warranty inquiries regarding your Intermatic FD2H Wall Timer, please contact Intermatic customer service directly. You can typically find contact information on the official Intermatic website or within the product packaging.
Manufacturer: Intermatic
