Adjustable Thermostat with Firestat for Attic Fans: FAQ

Quick Answer

The Adjustable Thermostat with Firestat is a dual-purpose controller that manages your attic fan's daily operation and automatically shuts it off if temperatures exceed 183°F for fire safety.

Frequently Asked Questions

How does the firestat work?

The firestat is a fusible link that melts at 183°F, breaking the circuit and turning off the fan. This prevents the fan from drawing flames or superheated air through the attic.

Can I use this thermostat with any power attic fan?

Yes, it works with any standard electric attic or exhaust fan that uses a 120V circuit. It mounts to a rafter with wood screws and includes a wiring diagram for installation. Check your fan's voltage rating before installation.

How do I adjust the temperature setting?

The thermostat uses a bi-metallic switch that you can adjust with a dial or set screw (refer to the included diagram). The exact adjustment method depends on the model variant. Always test the fan after adjusting to confirm it cycles on and off at your desired temperature.

What happens after the firestat activates?

Once the fusible link melts, it must be replaced before the fan will operate again. The thermostat itself is reusable, but the link is a one-time safety device. Keep a spare fusible link on hand if you live in a fire-prone area.

Is this thermostat difficult to install?

Installation is straightforward: mount the unit to a rafter with wood screws, connect the wires per the provided diagram, and set your desired temperature. Basic electrical knowledge is recommended. Turn off power at the breaker before wiring.

Product Facts

• Adjustable Thermostat with Firestat for Power Attic and Exhaust Fans: This temperature controller features a fusible link which will shut off your electric attic or exhaust fan in unsafe operating conditions exceeding 183° F, and is also used for the daily operation of your fan as a typical thermostat with a bi-metallic switch. It combines two functions in one unit: normal temperature regulation and automatic fire safety shutoff, so you don't need separate devices.