What is the acceptable distance from the ceiling to the deflector for the Reliable RFS 42 Concealed sidewall at specific spacing?

The Reliable RFS 42 Concealed sidewall sprinkler has specific requirements regarding the distance from the ceiling to the deflector to ensure proper function and coverage. The correct range of 4 inches to 6 inches is important for several reasons.

Firstly, this distance allows for the optimal performance of the sprinkler by ensuring that the water spray pattern effectively reaches the intended area, maximizing coverage and minimizing the risk of blind spots or ineffective sprinkler operation. If the deflector is too close to the ceiling, it could hinder water distribution; if too far, it may not effectively suppress a fire in its early stages.

Additionally, complying with this spacing helps in maintaining the manufacturer's specifications, which are based on extensive testing and standards compliance. This ensures that the system operates reliably over its lifetime and meets fire code requirements.

Understanding this acceptable range is crucial for any fire sprinkler fitter, as it impacts not only the effectiveness of the sprinkler system but also safety and compliance with industry regulations.