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- High limit, low limit and/or circulator controllers used to regulate boiler water temperature in gas- or oil-fired hydronic heating systems.
Resideo Aquastat Controller, High Limit Circulator, Series: L4081B, 130 to 240 deg F, 10 deg F Fixed High Limit, 10 to 25 deg F Adjustable Low Limit Differential, Horizontal Mount, 3/4-14 Spud, SPST Switch, 1-1/2 in Insulation Depth, 0 to 95% RH Non-Condensing Humidity, Domestic
- An immersion type liquid filled sensing element actuated two snap switches
- One switch operates as a high limit control
- The other switch operates as a low limit or circulator control, depending on the model
- Controller may be mounted in any positioning and needs no leveling
- Separate, easy-to-read, calibrated dial and set point adjustments for each switch
- Differential adjustments on low limit or circulator switch on select models
- All adjustments accessible inside front cover
- Push-in terminals for quick connecting
- Single sensing element for easy installation
- Two SPST snap switches act independently at respective temperature settings
- 150 deg F ambient temperature at switches and 265 deg F temperature at sensing element
- 360 VA ignition transformer load
- Domestic / ImportDomesticMounting TypeHorizontalTemperature Rating130 to 240 deg FHumidity Range0 to 95% RH Non-CondensingInsulation Depth1-1/2 inManufacturerResideo TechnologiesManufacturer #L4081B1047/USeriesL4081BSpud Size3/4-14Switch TypeSPSTTypeHigh Limit Circulator