Upright Sprinklers Model GS202U, 14.0 K-factor, Standard Response

Model GS202U, 14.0 K-factor Upright Sprinklers Standard Response.

GENERAL DESCRIPTION

The GS Model GS202U Upright, K-factor Upright Sprinklers are Fast They are suppression- mode sprinklers that are especially advantageous as a means of eliminating the use of in-rack sprinklers when protecting high piled storage.

Model GS202U Upright Sprinklers are primarily designed for protection of the following storage arrangements:

• Most encapsulated or non encapsulated common materials including cartoned, unexpanded plastics.
• Some storage arrangements of rubber tires, roll paper, flammable liquids

NOTICE

The GS Model GS202U Upright Sprinklers described herein must be installed and maintained in compliance with this document, as well as with the applicable standards of the National Fire Protection Association (NFPA), in addition to the standards of any other authorities having jurisdiction. Failure to do so may impair the perfor- mance of these devices.

The owner is responsible for main- taining their fire protection system and devices in proper operating con- dition. Contact the installing contrac- tor or product manufacturer with any questions. In all cases, the appropriate NFPA installation standard, or other applicable standard, must be ref- erenced to ensure applicability and to obtain complete installation guidelines. The general guidelines in this technical data sheet are not intended to provide complete installation criteria.

OPERATION

The glass bulb contains a fluid expands when exposed to heat. When the rated temperature is reached, the fluid expands sufficiently to shatter the glass bulb, allowing the sprinkler to activate and water to flow.

TECHNICAL DATA

• • Sprinkler Identification : GS202U
  • K-factor, gpm/psi½ (Lpm/bar½): 14.0 gpm/psi½ (201,6 Lpm/bar½
  • Temperature Rating ºF (ºC): 155°F (68°C) 200°F (93°C)
  • Thread Size: 3/4 in. NPT
  • Sprinkler Orientation: Upright standard Response
  • Working Pressure, psi (bar): 175 psi (12 bar)
  • Material
    • Frame: Brass
    • Deflector: Bronze
    • Compression Screw: Bronze
    • Button: Brass
    • Bulb: 3 mm Glass (Q5 – Standard Response)
    • Seal: TEFLON

INSTALLATION

GS Model GS202U Upright Sprinklers must be installed in accordance with this section.

General Instructions

Do not install any bulb-type sprinkler if the bulb is cracked or there is a loss of liquid from the bulb. With the sprinkler held horizontally, a small air bubble should be present.

A leak-tight 3/4 in. NPT sprinkler joint can be achieved by applying a minimum-to-maximum torque of 10 to 20 lb-ft (13,4 to 26,8 N∙m). Higher levels of torque can distort the sprinkler inlet with consequent leakageor impairment of the sprinkler.

NOTE:

Step 1. With pipe thread sealant applied, hand tighten the sprinkler into the sprinkler fitting.

Step 2. Wrench-tighten the Model GS202P / GS202U Sprinkler using only the W-Type 34 Sprinkler Wrench as shown in Figure 2, and by fully engaging (seating) the wrench on the sprinkler wrench flats as shown in Figure 1.

Step 3. After installation, inspect the bulb of each Model GS202P/ GS202U Sprinkler for damage. In particular, verify that the bulb is not cracked. Replace damaged sprinklers.