Beacon Morris BMKR02024-001 Standard Aquastat Assembly for K42 & K84 Twin-Flo III
A replacement aquastat (temperature-activated control/sensor assembly) used with Beacon Morris Twin-Flo III kickspace heaters to control blower operation based on water temperature.
Key Features:
- Standard aquastat assembly
- Product type: Aquastat
- Application: Replacement Part
- Listed "Used With": K42 and K84
- Listed contact temperature: 120°F
- Q&A guidance states it activates the blower when water temperature rises above 120°F
Compatibility & Applications:
- Listed for Twin-Flo III kickspace heater models K42 and K84
- Beacon Morris describes Twin-Flo III kickspace heaters as operating with an existing hot water supply (boiler/water heater) and being factory-wired with simple 115V electrical and 1/2" piping connections for the heater installation (manufacturer overview)
- Must only be used where the manufacturer specifies this exact part number: BMKR02024-001
Installation & Operation Notes:
- Installation should be performed by a qualified hydronic/HVAC technician.
- Refer to the unit's service/installation manual for the correct aquastat location, mounting method, and wiring/operational checks.
- Q&A guidance indicates this control is intended to bring the blower on when water temperature exceeds the specified threshold (above 120°F), so setup should confirm proper temperature contact and secure mounting per the unit documentation.
Maintenance & Troubleshooting:
- This part relates to blower-on/blower-off behavior tied to water temperature; if the heater fan does not start when expected, or runs inconsistently, the aquastat/sensor assembly may be evaluated as part of troubleshooting (per its described function).
- User feedback includes cases where the aquastat was replaced as a first step before larger repairs (for example, trying the aquastat before replacing a motor assembly), and at least one report where replacement did not resolve the underlying issue - confirm diagnosis per the unit documentation.
User Reviews & Q&A Summary:
- Fit/use themes: reviewers commonly describe it as an exact match/direct replacement that fit and worked as expected.
- Installation notes: several reviewers describe easy installation, and one review notes it snaps onto 5/8" OD pipe for their application.
- Issue themes: a small amount of feedback mentions receiving a part missing a component or with a distorted bracket, and one reviewer notes that while it was a direct replacement, it did not fix their specific problem.
- Q&A theme: the blower activation point is tied to water temperature, with guidance that it activates above 120°F.