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Stopper II
· 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)
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SERIES
®
®
®
ADA
Compliant
ADA
Compliant
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Summary of Contents for STI STI-1250CR
- Page 1 www.acornfiresecurity.com Stopper II SERIES ® Compliant ® Compliant · 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”...
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Page 2: Testing Approvals
STI-1150 With horn for flush mounted appliances includes relay contacts capable of operating STI-1150RC from 9-24 VDC remote power or internal 9V battery power also includes weather gasket Surface mounted version of the STI-1150 includes 2” conduit spacer STI-1155 Surface mounted version of the STI-1150RC includes 2” conduit spacer STI-1155RC Without horn for flush mounted appliances STI-1250 Without horn with 2”... -
Page 3: Important Notice
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. -
Page 4: Installation Instructions
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. - Page 5 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...
- Page 6 4 HOLES PER STEP 2. WHITE NORMALLY CLOSED 2 in. (51mm) L I FT H ERE OPTIONAL RELAY CONTACT SETTINGS 3.125 in. STI MODELS 1100RC, 1130RC, 1150RC AND 1155RC 6.25 in. (79mm) (159mm) Fig. 5 EXPLODED ELECTRONIC VIEW FACTORY VOLTAGE SETTINGS: JUMPER INSTALLED ON "RC"...
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Page 7: 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. -
Page 8: Product Dimensions
Phone: 248-673-9898 • info@sti-usa.com • www.sti-usa.com Taylor House • 34 Sherwood Road • Bromsgrove, Worcestershire • B60 3DR • England Tel: +44 (0)1527 520 999 • info@sti-emea.com • www.sti-emea.com Unit 7A • Lockhead Avenue • Airport Business Park • Waterford • X91 HWF2 • Ireland info@sti-emea.com •...
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