STI-1100 Stopper II Series Pull Station Cover Instruction Manual

June 12, 2024
STI

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STI-1100 Stopper II Series Pull Station Cover

Product Information

  • The product is a line of manual pull stations that are ADA compliant. The user manual includes information on various models that are UL Listed for indoor and indoor/outdoor use. The indoor models include versions with a horn for flush mounted appliances, with or without relay contacts, and with or without conduit spacers for surface mounted appliances and electrical boxes. The outdoor models, known as Weather Stopper Models, also include versions with a horn for flush mounted appliances, with or without relay contacts, and with or without conduit spacers for surface mounted appliances and electrical boxes. All outdoor units come with necessary gaskets.
  • The product specifications include a polycarbonate enclosure that meets UL94 V-2 standards. When mounted to smooth non-masonry surfaces, it meets NEMA 3R requirements. The product comes with a warning regarding potential exposure to chemicals, including Dichloromethane and Bisphenol A (BPA), which are known to the State of California to cause cancer and birth defects or other reproductive harm.
  • The product also provides information on the power requirements for different models, including current values for various voltages.

Product Usage Instructions

  1.  Determine the type of installation required: indoor or indoor/outdoor.
  2. Choose the appropriate model based on the installation type and specific requirements:
    • For indoor use:
    • STI-1100: With horn for flush mounted appliances.
    • STI-1100RC: With horn for flush mounted appliances, includes relay contacts capable of operating from 9-24 VDC remote power or internal 9V battery power.
    • STI-1130: With horn and 2 conduit spacer for surface mounted appliances and electrical boxes.
    • STI-1130RC: Surface mounted version of the 1100RC, includes 2 conduit spacer.
    • STI-1200: Without horn for flush mounted appliances.
    • STI-1230: Without horn, with 2 conduit spacer for surface mounted appliances and electrical boxes.
    • For indoor/outdoor use (Weather Stopper Models):
    • STI-1150: With horn for flush mounted appliances.
    • STI-1150RC: With horn for flush mounted appliances, includes relay contacts capable of operating from 9-24 VDC remote power or internal 9V battery power, also includes weather gasket.
    • STI-1155: Surface mounted version of the STI-1150, includes 2 conduit spacer.
    • STI-1155RC: Surface mounted version of the STI-1150RC, includes 2 conduit spacer.
    • STI-1250: Without horn for flush mounted appliances.
    • STI-3150: Without horn with 2 conduit spacer for surface mounted appliances and electrical boxes.
  3.  Install the chosen model according to the provided instructions and the specific requirements of the installation location.
  4.  Ensure that the power requirements are met for the selected model. Refer to the product specifications for current values at different voltages.
  5. Follow all safety precautions and warnings mentioned in the user manual and on the product itself, including the warning regarding potential chemical exposure.
    For any further information or assistance, refer to the user manual or contact the manufacturer.

INTRODUCTION

  • Can be used as a guard against physical damage to manual pull station, with or without optional warning horn.
  • Optional horn has choice of 95 dB or 105 dB (measured at 1 foot).
  • Standard red units have “In Case of Fire…” label unless specified with “no label” or custom label” (extra charge for custom label).
  • Typical working properties of polycarbonate are -40° to 250°F (-40° to 121°C).
  • Three year guarantee against breakage of polycarbonate housing in normal use (one year on electro mechanical and electronic components).
  • Weather Stopper models provide a raintight seal to the NEMA 3R standard. (IPX4 equivalency)

UL Listed Models Included on this Install Sheet

Indoor Use:

  • STI-1100 With horn for flush mounted appliances
  • STI-1100RC With horn for flush mounted appliances includes relay contacts capable of operating from 9-24 VDC remote power or internal 9V battery power
  • STI-1130 With horn and 2” conduit spacer for surface mounted appliances and electrical boxes
  • STI-1130RC Surface mounted version of the 1100RC includes 2” conduit spacer
  • STI-1200 Without horn for flush mounted appliances
  • STI-1230 Without horn, with 2” conduit spacer for surface mounted appliances and electrical boxes

Indoor/Outdoor Use (Weather Stopper Models)

All outdoor units include necessary gaskets.

  • STI-1150 With horn for flush mounted appliances
  • STI-1150RC With horn for flush mounted appliances includes relay contacts capable of operating from 9-24 VDC remote power or internal 9V battery power also includes weather gasket
  • STI-1155 Surface mounted version of the STI-1150 includes 2” conduit spacer
  • STI-1155RC Surface mounted version of the STI-1150RC includes 2” conduit spacer
  • STI-1250 Without horn for flush mounted appliances
  • STI-3150 Without horn with 2” conduit spacer for surface mounted appliances and electrical boxes
  • STI-1102 Replacement horn for cover with alarm
  • Custom-LBL Custom text message for horn housing

Testing Approvals

It has been tested and approved or listed by:

  • UL/cUL Listed
  •  Certified ADA Compliant
  • Weather Stopper models provide a raintight seal similar to NEMA 3R when mounted on smooth flat surface.
  • MEA 49-00-E (STI-1200)
  • Obtain local fire marshal approval for State of California

Specifications

  • Polycarbonate Enclosure

    • Flammability UL94 V-2
    • Wall Thickness .095 inches
    • NEMA Rating Meets NEMA 3R when mounted to smooth non-masonry surfaces
      WARNING: This product can expose you to chemicals including Dichloromethane, which is known to the State of California to cause cancer, and Bisphenol A (BPA), which is known to the State of California to cause birth defects or other reproductive harm.
      For more information go to www.P65Warnings.ca.gov.
  • Gaskets

    • Closed Cell IV2 with pressure sensitive adhesive
    • Replace after 5 years
  • **Horn

**STI-1100-Stopper-II-Series-Pull-Station-Cover-fig-2

  • Relay

STI-1100-Stopper-II-Series-Pull-Station-Cover-fig-3

  • Temperature Range
    • 40° to 120°F (-40° to 49°C)
    • For temperatures below -4°F (-20°C) recommend using remote power source
  • Warranty
    • Three year guarantee against breakage of polycarbonate housing in normal use (one year on electro mechanical and electronic components).
    • Electronic warranty form at www.sti-usa.com/wc14.

Important Notice

Stopper II is intended to be used in areas where the incidence of false fire alarms from manual pull stations is high or has proven to be a serious problem. Any disadvantage of this device is more than balanced when one considers the consequences of false fire alarms, especially if fire service personnel and equipment are responding to a false fire alarm when they are needed for a real fire somewhere else. Add to this the disruption to the facility when false alarms occur. If you have, or may have, a problem with false fire alarms or physical/weather damage to your fire alarm activation devices, the Stopper II could prove invaluable.

Installation Notes

  1. When used outdoors, the manual pull station must also be rated for outdoor use.
  2. The relay contacts on Model STI-1100RC, STI-1130RC, STI-1150RC and STI-1155RC, UL Listing does not permit connection to fire alarm or a life safety function.
  3. According to UL Listing, models powered from an external power source cannot be supplied from the fire alarm panel.
  4. When properly installed the operation of this cover will not interfere with the function of your life safety system.
  5. A backplate and gaskets must be used to achieve NEMA 3R integrity.
  6. Horn must be tested annually for proper operation. Battery replacement is recommended annually dependent on use and battery expiration date.
  7. If mounting to an uneven surface STI recommends the use of the STI-1280 backplate to ensure proper sealing. If wire access or screw mounting holes are needed, backplate may be drilled as necessary.

Installation Instructions

  1. The power switch is in the “OFF” position (Fig. 5). Using frame or optional STI-1280 backplate (recommended with all Weather Stopper® models) as a template, mark mounting holes on wall taking into consideration placement of pull station or refer to Fig. 1 for dimensional hole placement from center of clear opening.
    NOTE: Be sure cover will not interfere with operation of the pull station when installed.

STI-1100-Stopper-II-Series-Pull-Station-Cover-fig-4

  1. If using STI-1280 backplate, refer to Fig. 2 and 3 for install instructions depending on your application.
    NOTE: When drilling hole in backplate NEMA 3R integrity is compromised. Weather Stopper, STI-1250, is designed to meet the requirements of IP54.

STI-1100-Stopper-II-Series-Pull-Station-Cover-fig-5

  1. Align frame and put screws through frame holes, into anchors and tighten (if used, through spacer, gaskets and optional backplate). For STI-1200, continue to Step 8.
    NOTE: When using STI-3100 spacer, be sure to install conduit knockout, any additional ventilation and gaskets before you tighten to the wall. When using conduit gasket STI-3004, place gasket around conduit in proper location and install the spacer. For added protection a bead of silicone may be applied to conduit fitting and between STI-1280 backplate and wall (Fig. 3A). Refer to exploded view of flush and surface mount installation options Fig. 2 and 3. Weather Stopper, STI-3150, IP equivalency may vary depending on selection of conduit inserts used.

STI-1100-Stopper-II-Series-Pull-Station-Cover-fig-6
STI-1100-Stopper-II-Series-Pull-Station-Cover-fig-7

  1. Make any external connections for remote power or relay options. Refer to Fig. 5 for wiring details.

  2. For models using the 2” spacer to install the cover, insert the cable end stop into the pocket on the inside of the frame. Hold the frame against the wall and pull the cable to lock into the slot. Repeat for 2nd cable (FIG. 4).

  3. Slide power switch, on back of horn housing, to “ON” position (Fig. 5). When power is connected to unit horn should sound. NOTE: If external power source is used horn will not sound until power is turned on at source.

  4. Push switch in to silence horn while tightening switch locking screw (Fig. 5 for location of screw). This prevents slide switch from being shut off during unauthorized use.
    NOTE: Surface Mount version is shipped with screw in locked position.

  5. Close cover on frame by aligning tabs on cover with slots on frame and push bottom on tightly, horn should silence. To test: lift cover, horn should sound, and return cover to frame to silence horn. Unit is armed for operation.

STI-1100-Stopper-II-Series-Pull-Station-Cover-fig-8 STI-1100-Stopper-II-Series-Pull-Station-Cover-
fig-9

Gasket Installation

Use of gaskets is necessary to ensure a proper seal in weatherproof applications. Weather Stopper models ship complete with all necessary gaskets and should be used accordingly. For flush mount weather applications, one STI-3002 must be used between the frame or spacer and wall or backplate (see Fig. 3). An STI-3004 gasket must be used around all entering conduit. For surface mount applications, the conduit insert with holes is available for installation in the bottom knockout of the conduit spacer. This helps prevent excessive condensation buildup; but may allow for dust entry. STI recommends gasket replacement every five years. (UL requires listing of pull station to be UL Listed for outdoor installations.)

Battery Replacement Instructions

  1. Remove the cover from the frame. It is not necessary to remove the cables from the frame.
  2. Use a 3/32” allen wrench to loosen the button head screw located next to the switch far enough to slide the switch to the “off” position.
  3.  Holding the horn housing and cover in one hand, remove the button head screw located on the top of the cover with the same allen wrench.
  4. Set the clear cover aside and remove the horn housing cover.
  5. Replace the battery with a 9 Volt battery only. Be careful to keep the wires away from the slide switch and the micro-switch.
  6. Reassemble the unit making sure that the horn housing fits into the tabs on the horn housing cover; and that this assembly is mounted evenly into the clear cover.
  7.  Replace the button head screw through the top of the clear cover and into the top of the horn.
  8. Slide the switch to the “on” position. The horn should sound.
  9. Push the switch in to silence horn while tightening the “on” position locking screw.
  10. Replace the cover onto the frame and test by removing the cover from the frame. The horn should sound when removed and silence when cover is replaced. If unit does not operate correctly, contact Safety Technology International, Inc.

Polycarbonate Cleaning Instructions

Rinse with water to remove abrasive dust and dirt. Wash with soap or mild detergent, using a soft cloth. Rinse once more, then dry with a soft cloth or chamois. Exercise caution when using water inside enclosure. Make sure unit is completely dry inside before reassembling. To remove grease or wet paint from exterior of cover, rub gently with a cloth thoroughly wetted with Naptha. Then wash and rinse. (Do not use razor blades.)

Options Available

  • KIT-316 Louvers for STI-3100
  • KIT-H19015 Two 3/32” Allen wrenches
  • STI-1102 Replacement horn for cover with alarm
  • STI-1280 Backplate
  • STI-3002 Weather gasket
  • STI-3003 Conduit gasket
  • STI-3100 2” conduit spacer with ½” conduit entry
  • STI-3104 2” conduit spacer with ¾” conduit entry (includes one ¾” conduit entry gasket)

Product Dimensions

EXTERNAL DIMENSIONS: W x H x D

  • Flush 7.1 x 10.0 x 3.3 in. (180 x 254 x 84 mm)
  • Surface 7.23 x 10.1 x 5.28 in. (184 x 256 x 134 mm)

STI-1100-Stopper-II-Series-Pull-Station-Cover-fig-10
STI-1100-Stopper-II-Series-Pull-Station-Cover-fig-11

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