1. Introduction
The Intermatic AG3000 is a 120/240 VAC Universal HVAC Surge Protective Device (SPD) designed to safeguard HVAC equipment and other home appliances from damaging power surges. This device offers comprehensive protection across three modes (L-G, L-L, L-N) and utilizes advanced Thermally Protected Metal Oxide Varistor (TPMOV) technology to ensure reliable surge suppression. Its robust, watertight, and UV-resistant Type 4X plastic enclosure makes it suitable for both indoor and outdoor installations.
This manual provides essential information for the safe and correct installation, operation, and maintenance of your AG3000 device.
2. Safety Information
WARNING: Installation of this device involves working with high voltage electricity. Improper installation can result in serious injury, death, or damage to property. It is strongly recommended that installation be performed by a qualified electrician or licensed HVAC technician.
- Always disconnect power at the main service panel before installing or servicing the AG3000.
- Verify that the power is off using a voltage tester before proceeding with any work.
- Follow all local and national electrical codes.
- Ensure all connections are secure and properly insulated.
- The AG3000 contains no user-serviceable parts. Do not attempt to open or repair the unit.
3. Installation
The AG3000 is designed for easy integration into existing HVAC electrical systems. It should be installed at the disconnect box for the HVAC unit or other protected equipment.
This image shows the Intermatic AG3000 Surge Protective Device mounted on the side of an outdoor electrical disconnect box. The disconnect box is situated on a residential exterior wall, adjacent to a large HVAC condenser unit. The device's green LED indicator is visible, signifying operational status. This illustrates a typical installation scenario for the AG3000.
Installation Steps:
- Power Disconnection: Turn off the main power supply to the HVAC unit at the circuit breaker panel. Verify power is off using a voltage meter.
- Mounting: Mount the AG3000 to the side of the HVAC disconnect box using a standard knockout. The device can be installed in any position. Ensure the rubber gasket is used with the lock nut to maintain the watertight seal.
- Wiring: The AG3000 comes with 10 AWG tinned copper wires. Connect these wires to the appropriate terminals within the disconnect box.
- Connect the two hot wires from the AG3000 to the two hot legs (L1 and L2) of the HVAC unit's power supply.
- Connect the ground wire from the AG3000 to the equipment ground bar in the disconnect box.
Best Practice: Avoid 'double tapping' (two wires under one screw) unless the terminal is specifically rated for it. Use the 'pigtail method' by connecting the AG3000 wires to short lengths of appropriately sized wire, which are then connected to the main terminals. Use a torque screwdriver to ensure all terminal screws are tightened to the manufacturer's specifications. If white wires are used as hot wires, mark them clearly with black tape or heat shrink tubing to indicate their function.
- Secure Connections: Ensure all wire connections are tight and secure.
- Restore Power: Once installation is complete and verified, restore power to the HVAC unit at the main circuit breaker panel.
4. Operation
The Intermatic AG3000 operates automatically to protect your equipment from power surges. Its operational status is indicated by a green LED light on the device.
This image displays a close-up of the Intermatic AG3000 Surge Protective Device, highlighting its label. The label details the model number AG3000, ANSI/UL 1449 4th Edition compliance, Type 4X enclosure, and the function of the green LED indicator: 'ON: UNIT OPERATING CORRECTLY', 'OFF: PROTECTION DIMINISHED, REPLACE UNIT'. It also lists electrical specifications such as 120/240 VAC, 50-60 Hz, In: 20 kA, SCCR: 100 kA, MCOV, and VPR values.
LED Indicator Status:
- Green LED ON: The unit is operating correctly and providing surge protection.
- Green LED OFF: The protection has diminished, and the unit needs to be replaced.
5. Maintenance
The Intermatic AG3000 is a maintenance-free device. Regular inspection of the green LED indicator is the only required maintenance.
- Periodically check the green LED indicator on the device.
- If the green LED is off, the device has absorbed a significant surge or has reached the end of its protective life. The unit must be replaced to ensure continued protection for your equipment.
6. Troubleshooting
The primary troubleshooting for the AG3000 involves observing the LED indicator.
| Symptom | Possible Cause | Solution |
|---|---|---|
| Green LED is OFF | The AG3000 has absorbed a surge event or has reached its end of life. | Replace the AG3000 unit. The device is designed to sacrifice itself to protect connected equipment. |
| Green LED is OFF and HVAC equipment is not functioning | The AG3000 has failed, and the HVAC equipment may have also been damaged by a surge. | Replace the AG3000. Inspect HVAC equipment for damage. Contact a qualified technician for HVAC repair if necessary. Refer to warranty information. |
| Green LED is OFF immediately after installation | No power to the device or incorrect wiring. | Verify power is restored to the disconnect box. Recheck wiring connections for correctness and security. Ensure the circuit breaker is ON. |
7. Specifications
| Specification | Detail |
|---|---|
| Model Number | AG3000 |
| Voltage | 120/240 VAC |
| Frequency | 50-60 Hz |
| In (Nominal Discharge Current) | 20 kA |
| SCCR (Short Circuit Current Rating) | 100 kA |
| MCOV (Maximum Continuous Operating Voltage) | L-N: 150V, L-L: 300V |
| VPR (Voltage Protection Rating) | L-N/G: 700V, L-L: 1200V |
| Enclosure Type | Type 4X Watertight and UV Resistant Plastic |
| UL Listing | ANSI/UL 1449, 4th Edition (Type 1 or 2 SPD) |
| Item Weight | 11.2 ounces |
| Product Dimensions | 4.3 x 2 x 4.5 inches |
| Material | Plastic, Metal |
8. Warranty and Support
The Intermatic AG3000 Surge Protective Device comes with a comprehensive warranty to ensure your peace of mind.
Product Warranty:
The AG3000 includes a 3-year product warranty from the date of purchase, covering defects in materials and workmanship.
Connected Equipment Warranty:
In addition to the product warranty, the AG3000 offers a $7,500 connected equipment warranty for 3 years. This warranty provides coverage for equipment properly connected to and protected by the AG3000, in the event of surge damage while the AG3000 was operational.
For warranty claims or technical support, please contact Intermatic customer service. Refer to the manufacturer's official website or product packaging for the most current contact information and detailed warranty terms and conditions.
