Utica-Dunkirk AQ02101 290°F Rollout Switch
A Utica/Dunkirk fixed-temperature rollout safety switch used on certain Utica cast-iron gas boiler applications to provide high-temperature rollout shutoff when the specified replacement switch is required.
Key Features
- Fixed temperature safety switch rated 290°F (rollout switch)
- Application listed as Replacement Part
- Utica parts documentation identifies AQ02101 as a fixed-temperature control used as a rollout switch
Compatibility & Applications
- Listed by Utica in parts - compatibility must be confirmed using the unit's full model/serial and the manufacturer-specified replacement part number
- Must only be used where the manufacturer specifies this exact part number: AQ02101.
Installation & Operation Notes
- Installation should be performed by a qualified boiler/HVAC service technician.
- Reference the boiler's service/installation manual and model-specific parts list for correct switch location, wiring, and safe shutdown/startup procedures.
- Utica documentation notes the rollout switch is located on the base and the spill switch on the flue collector (depending on which safety circuit the same part is used for in that boiler).
Maintenance & Troubleshooting
- This switch is part of the boiler's safety circuit; user feedback indicates the boiler may not operate when the switch is open/failed and operation is restored when the correct replacement switch is installed.
- One review notes that replacing safety switches helped identify a related issue with an automatic vent damper, reinforcing the need to follow the boiler's troubleshooting procedure rather than replacing parts blindly.
User Reviews & Q&A Summary
- Correct replacement / works as expected: Reviews commonly describe it as an exact replacement that restored heat.
- Ease of install: Multiple reviewers describe it as easy/straightforward to install.
- Shipping/service experience: Common themes include fast delivery, good packaging, and positive customer support experiences.