Thermal Barrier limits temperature rise to what?

Thermal Barrier limits temperature rise to what?

• A. Thermal Barrier
• B. System Riser
• C. Automatic Water Supply
• D. Sprinkler Activation

Answer: (A)

The thermal barrier is the protective layer that limits heat transfer to concealed spaces, keeping the wood framing from heating up too quickly. In residential sprinkler design, it typically limits the temperature rise on the hidden surface to about 250°F (120°C) above ambient for the required period, helping prevent premature ignition of the framing and giving the sprinkler system time to control the fire. The other choices describe parts of the water supply or activation process and do not control heat transfer through concealed spaces.

The thermal barrier is the protective layer that limits heat transfer to concealed spaces, keeping the wood framing from heating up too quickly. In residential sprinkler design, it typically limits the temperature rise on the hidden surface to about 250°F (120°C) above ambient for the required period, helping prevent premature ignition of the framing and giving the sprinkler system time to control the fire. The other choices describe parts of the water supply or activation process and do not control heat transfer through concealed spaces.