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TFP220 Page 4of8 HCA Linear Spacing Area Spacing ft ft Ceiling Height ft Ceiling Type K-factor Style Response Min Max Min Max Noncombustible Unobstructed, 11.2 EC Pendent or 10 20 100 400 Up to 30 Noncombustible Obstructed, or 14.0 EC Upright Combustible Unobstructed Noncombustible Unobstructed, 11.2 EC Pendent 10 20 100 400 Up to 30 Noncombustible Obstructed, or 14.0 EC Recessed Combustible Unobstructed Style 30 10 20 100 400 Up to 30 Combustible Obstructed 11.2 EC 14.0 EC Pendent or Upright Quick 11.2 EC Pendent 10 20 100 400 Up to 30 Combustible Obstructed 14.0 EC Recessed Style 30 10 20 100 400 Over 30 and up to 45 Noncombustible Unobstructed 11.2 EC 14.0 EC Upright HC-2 Linear Spacing Area Spacing ft ft Ceiling Height ft Ceiling Type K-factor Style Response Min Max Min Max 10 20 100 400 Up to 30 Noncombustible Unobstructed, 11.2 EC Pendent or Upright Quick 10 20 100 400 Up to 30 14.0 EC Pendent or Upright Combustible Unobstructed 10 16 100 256 Over 30 and 11.2 EC 14.0 Upright up to 45 EC HC-3 Linear Spacing Area Spacing ft ft Ceiling Height ft Ceiling Type K-Factor Style Response Min Max Min Max 10 16 100 256 Up to 30 11.2 EC Upright 10 20 100 400 Up to 30 14.0 EC Pendent or Upright Noncombustible Unobstructed, Combustible Unobstructed Quick 10 16 100 256 Over 30 and 11.2 EC, Upright up to 45 14.0 EC NOTES • The design for K 11.2 EC (K 160 EC) sprinklers should not include fewer than six sprinklers or have a design pressure of less than 12 psi (0,8 bar); similarly the design for K 14.0 EC (K 200 EC)sprinklers should not include fewer than four sprinklers or have a design pressure of less than 18 psi (1,2 bar). • For flow criteria, refer to FM Loss Prevention Data Sheet 3-26. • Refer to FM Loss Prevention Data Sheet 2-0 for permitted K-Factor/Area Combinations. TABLE C SENSITIVITY RATING FOR FM APPROVAL OF SERIES EC-11 OR EC-14 SPRINKLERS exceed 30 in. (762 mm). The maxi- mum permitted concrete tee length is 32 ft (9,8 m). However, where the concrete tee length exceeds 32 ft (9,8 m), non-combustible baffles, equal in height to the depth of the tees, can be installed so that the space between the tees does not exceed 32 ft (9,8 m) in length. 2. The sprinkler deflectors are to be located in a horizontal plane at or above 1 in. (25,4 mm) below the bottom of the concrete tee stems. 3. When the sprinkler deflectors are located higher than a horizontal plane 1 in. (25,4 mm) beneath the bottom of the concrete tee stems, the obstruction to sprinkler dis- charge criteria requirements of NFPA 13 for extended coverage upright and pendent sprinklers applies. FM Approval Requirements Series EC-11 and EC-14 Extended Coverage Upright and Pendent Sprin- klers are to be installed in accor- dance with the applicable FM Loss Prevention Data Sheet for limited use in buildings of specific roof construc- tion and for the protection of certain specific ordinary hazard (non -storage and/or non-flammable or combustible liquid) occupancies. Information pro- vided in the FM Loss Prevention Data Sheets relates to, but is not limited to, hydraulic design, ceiling slope, and obstructions, minimum and maximum allowable spacing, and deflector -to - ceiling distance. These criteria may differ from UL and/or NFPA criteria. Therefore, the designer should review and become familiar with FM requirements before proceeding with design.