1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of the Midwest Hearth R1630 ECO Adapter. This adapter is a replacement part specifically designed for Empire FAW-55 heaters, ensuring the correct function of the ECO (Energy Cut-Off) system. Please read these instructions thoroughly before proceeding with installation or any service.
2. Product Overview
The Midwest Hearth R1630 ECO Adapter is a critical component for maintaining the safety and efficiency of your Empire FAW-55 heater. It functions as a replacement for Empire Part # R1630 and is designed to interface with a two-wire thermocouple ECO cut-out at the gas valve.

Figure 1: Midwest Hearth R1630 ECO Adapter. This image displays the Midwest Hearth R1630 ECO Adapter. It is a brass-colored cylindrical component with a threaded section at the top, designed for connection. Two flat, metallic electrical terminals extend from the sides, secured by black insulating material. The adapter is shown against a plain white background.
Key Features:
- Direct replacement for Empire Part # R1630.
- Compatible with Empire FAW-55 heaters.
- Designed for two-wire thermocouple ECO cut-out systems.
3. Setup and Installation
Safety First: Before attempting any installation or service, ensure the heater's gas supply is turned off and the unit is completely cool. Disconnect electrical power if applicable. If you are unsure about any step, consult a qualified technician.
- Locate the Existing Adapter: Identify the current ECO adapter on your Empire FAW-55 heater, typically found near the gas valve.
- Disconnect Wiring: Carefully disconnect the two wires connected to the existing adapter. Note their orientation if necessary, though typically they are interchangeable for this type of adapter.
- Remove Old Adapter: Unscrew or detach the old R1630 adapter from its position. Be mindful of any seals or gaskets.
- Inspect and Prepare: Inspect the area for any debris or damage. Ensure the new Midwest Hearth R1630 adapter is clean and free from obstructions.
- Install New Adapter: Thread the new R1630 adapter into place. Tighten securely but do not overtighten to avoid damaging the threads or the adapter.
- Reconnect Wiring: Connect the two wires to the terminals on the new adapter. Ensure connections are snug and secure.
- Restore Gas and Power: Once the adapter is securely installed and wired, slowly turn the gas supply back on. Restore electrical power to the heater.
- Test Operation: Follow your heater's specific instructions for initial startup and testing to ensure the ECO system functions correctly. Observe for any gas leaks or unusual operation.
Note: This adapter is designed for indoor installation within the heater unit.
4. Operating Principles
The R1630 ECO Adapter works in conjunction with the heater's thermocouple and gas valve to monitor the pilot flame. If the pilot flame extinguishes, the thermocouple cools, signaling the ECO adapter to cut off the gas supply to prevent uncombusted gas from accumulating. This is a crucial safety feature.
Once installed, the adapter operates automatically as part of the heater's safety system. No direct user interaction is required for its operation.
5. Maintenance
The Midwest Hearth R1630 ECO Adapter is a passive component and typically requires no specific maintenance. However, it is recommended to:
- Annual Inspection: During routine heater maintenance, visually inspect the adapter and its connections for any signs of corrosion, damage, or loose wiring.
- Cleanliness: Ensure the area around the adapter and gas valve remains free of dust and debris, which could interfere with heater operation.
- Professional Service: If the heater's ECO system malfunctions or the pilot light frequently goes out, consult a qualified heating technician. Do not attempt to bypass or alter the ECO adapter.
6. Troubleshooting
If your Empire FAW-55 heater is experiencing issues related to the pilot light or gas supply after installing the R1630 ECO Adapter, consider the following:
- Pilot Light Not Staying Lit:
- Ensure the thermocouple is properly positioned in the pilot flame.
- Check for secure wiring connections to the ECO adapter.
- Verify the gas supply is fully open.
- The thermocouple itself might be faulty and require replacement.
- No Gas Flow to Main Burner:
- Confirm the pilot light is lit and heating the thermocouple adequately.
- Check for any obstructions in the gas line or valve.
- If the pilot light is strong and the thermocouple is hot, the issue might be with the gas valve or other heater components, not the adapter.
For persistent issues, it is recommended to contact a certified heating technician.
7. Specifications
| Model Number | R1630 |
| Brand | Midwest Hearth |
| Replaces Part | Empire Part # R1630 |
| Compatibility | Empire FAW-55 Heaters |
| Material | Brass |
| Dimensions | 2 x 1 x 0.5 inches |
| Item Weight | 0.64 ounces |
| Power Source (Heater) | Natural Gas |
8. Warranty and Support
Specific warranty information for the Midwest Hearth R1630 ECO Adapter may vary. Please refer to the packaging or contact Midwest Hearth directly for details regarding warranty coverage.
For technical support or inquiries, please contact Midwest Hearth customer service. Contact information can typically be found on the product packaging or their official website.
Note: Always ensure that any replacement parts are installed by a qualified individual to maintain product warranty and safety standards.