Field Controls
Field Controls FTS-6 120/240V 180°F Thermal Safety Switch hvac control
Thermal safety switch for large gas furnaces and boilers, rated 120/240V with 180°F trip point and manual reset
- Manual reset prevents automatic restart after overheat
- 120/240V operation suits most residential systems
- 180°F trip point protects large gas furnaces and boilers
- Mounts on draft hood or barometric control with included brackets
- Spill switch design detects dangerous flue-gas spillage
Purpose and application
The Field Controls FTS-6 is a thermal safety switch designed for large gas furnaces and boilers. It interrupts power when the temperature reaches 180 degrees Fahrenheit and requires a manual reset to restore operation. HVAC technicians and facility managers install it as a spill switch to protect against dangerous venting conditions.
Voltage and trip point
The switch operates on 120 or 240 volt circuits and trips at a fixed 180 degrees Fahrenheit. This single rating determines whether the device matches the appliance's electrical supply and the required safety threshold; no other voltage or temperature options are available for this model.
Mounting and integration
Brackets are included for mounting on a draft hood or a double-acting barometric draft control, so the installer can choose the appropriate location without extra hardware. The manual reset button is accessible on the device itself, allowing the system to be restarted only after the cause of the trip has been investigated and corrected.
Highlights
- Manual reset prevents automatic restart after overheat
- 120/240V operation suits most residential systems
- 180°F trip point protects large gas furnaces and boilers
- Mounts on draft hood or barometric control with included brackets
- Spill switch design detects dangerous flue-gas spillage
Specifications
| Brand | Field controls |
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Questions about this item
What does the 180°F rating mean once the switch is installed on a furnace?
The switch trips when the surrounding temperature reaches 180°F, cutting power to the gas valve to prevent overheating.
How do the 120/240V ratings limit the circuits this control can handle?
It is rated to switch loads on either 120V or 240V AC circuits, so it can be wired into the control voltage of most residential gas furnaces and boilers.
What mounting hardware is needed to fit the switch on a draft hood or barometric draft control?
Both mounting brackets are included in the box, allowing direct attachment to a draft hood or a double-acting barometric draft control without extra parts.
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