EPS10-1 and EPS10-2 Alarm Pressure Switches System Sensor EPS10 Series switches are designed for use in wet, dry, deluge, and pre-action automatic sprinkler systems to indicate a discharge from a sprinkler. Features • Sensitivity adjustment wheel, no special tools required • Reinforced diaphragm resists pressure spikes • Two conduit entrances • Both one- and two-switch models available The EPS10-1 has a single SPDT switch while the EPS10-2 model contains two SPDT switches. The EPS10 Series features field adjustable pressure sensitivity to provide an alarm response between 4 and 20 psi. It is factory set to respond at 4 – 8 psi on rising or falling pressure. The pressure adjustment wheel requires no special tools and does not affect switch synchronization on the EPS10-2. The EPS10 Series switches are NEMA 4 rated. Agency Listings S739 7770-1209:147 0X0A7.AY 0D3A3.AY C5169 VdS G4020028-27 Specifications, EPS10-1 and EPS10-2 Architectural/Engineering Specifications EPS10-1 (SPDT), EPS10-2 (2/SPDT) Model shall be an EPS10-1 or EPS10-2 pressure type waterflow switch as manufactured by System Sensor of St. Charles, IL. They shall be installed on the sprinkler system with connection as shown on the drawings and/or as specified herein. Pressure switches shall be of the bellows-activated type. Switches shall have a maximum service pressure rating of 300 psi and shall be factory adjusted to operate at a pressure of 4 – 8 psi. There shall be one (1) or two (2) SPDT contacts rated at 10.0 Amp @ 125/250 VAC and 2.5 Amp @ 6/12/24 VDC. The contractor shall furnish and install, where indicated on the plans, pressure switches according to appropriate NFPA standards. Switches shall be provided with a ½˝ NPT male pressure connection to be connected to the alarm check valve of a “wet” sprinkler system, into the intermediate chamber of a “dry” system, or to a pre-action or deluge valve. They shall be activated by any flow of water equal to or in excess of the discharge from one sprinkler head. Switches shall provide 1 knockout type and 1 open hole for ½˝ conduit fitting attachment and a ground screw provision for electrical grounding. The switch enclosure shall be weatherproof and carry a UL 4x/NEMA 4 rating when used with proper electrical fittings and conduit. The cover shall incorporate tamper-resistant screws. The unit shall be listed by Underwriters Laboratories, Inc. and approved by Factory Mutual. EPS10 TO SPRINKLER SYSTEM WIRE TO ALARM INDICATING CIRCUIT OF FIRE ALARM CONTROL PANEL Specifications, EPS10-1 and EPS10-2TO(continued) ALARM SPRINKLER Physical/Operating Specifications CHECK SYSTEM Maximum Operating 300 psi VALVE Pressure Maximum Adjustment 4 to 20 psi Pressure Range Differential Approximately 3 psi throughout WATER range OS & Y VALVE ALARM CHECK VALVE WATER Operating Temperature MOTOR RangeGONG LOCAL ALARM Enclosure SHUT OFF VALVE Factory Setting Switch Contact Ratings Operates at rising pressure 4 to 8 psi Shipping Weight EPS10-1: One set SPDT (Form C) Service Use WET SYSTEM EPS10-2: Two sets SPDT (Form C) 10.0 A, ½ HP @ 125/250 VAC 2.5 A @ 6/12/24 VDC Pressure Connection Dimensions ½˝ NPT male glass reinforced nylon 5.12˝ H × 3.325˝ W × 4.250˝ L (13.0 cm × 8.4 cm × 10.8 cm) WATER MOTOR GONG WIRE TO ALARM INDICATING CIRCUIT OF FIRE ALARM CONTROL PANEL Indoor or outdoor use: –40°F to 160°F (–40°C to 71°C) UL Models: Optional P/N 546-8000 RETARD ULC Models: Factory Installed Rated UL 4x, NEMA LOCAL 4 for indoor WATER ALARMor OS & Y useBY-PASS SHUT OFF outdoor VALVE VALVE 1.2 lbs. (.54VALVE Kg) Automatic Sprinkler: NFPA 13 WET SYSTEM One or Two Family Dwelling: NFPA 13D Residential Occupancies up to 4 Stories: NFPA 13R National Fire Alarm Code: NFPA 72 3 years Cover Tamper RETARD Switch BY-PASS VALVE EPS10 Warranty Typical Sprinkler Applications EPS10 ALARM CHECK VALVE TO SPRINKLER SYSTEM WIRE TO ALARM INDICATING CIRCUIT OF FIRE ALARM CONTROL PANEL TO SPRINKLER SYSTEM ALARM CHECK VALVE WATER MOTOR GONG WATER MOTOR GONG RETARD WATER BY-PASS VALVE OS & Y VALVE OS & Y VALVE WATER LOCAL ALARM BY-PASS SHUT OFF VALVE VALVE Pressure Switch Basic Dimensions M A HEX SWITCH AT 4-8 PSIPT.) (HIGH TRIP PT.) PSI (HIGH TRIP ADJUSTMENTSWITCH AT 4-8 B B SCREW COM COM SWITCH #2 B A WIRE TO A WIRE TO ALARM SWITCH 1 SWITCH 1 ALARM EPS10 INDICATING EPS10 INDICATING TO MAIN ADJUSTMENT CIRCUIT CIRCUIT SPRINKLER OF FIRE ALARM WHEEL OF FIRE SYSTEM CONTROL PANEL ALARM CHECK CONTROL 1/2˝ NPT Part No. DRY VALVE PANEL WATER EPS10-1 PIPE MOTOR VALVE GONG RETARD WATER LOCAL ALARM BY-PASS SHUT OFF VALVE VALVE OS & Y VALVE WATER BY-PASS VALVE LOCAL ALARM EPSA10-1 SHUT OFF VALVE EPSA10-2 DRY SYSTEM WET SYSTEM LOCAL ALARM SHUT OFF VALVE MODEL EPS10-2 MODEL EPS10-2 AT 0 PSI SWITCHES ATSWITCHES 0 PSI B B B B COM COM COM COM A A A A SW1SW2 SW2 SW1 AT 4-8 PSIPT.) (HIGH TRIP PT.) SWITCHES ATSWITCHES 4-8 PSI (HIGH TRIP B B B B COM COM COM COM A A SW2 A A SW1 SW1 SW2 BOTH SWITCHES ACTIVATE SIMULTANEOUSLY BOTH SWITCHES ACTIVATE SIMULTANEOUSLY WIRE TO ALARM INDICATING CIRCUIT OF FIRE ALARM Description Alarm Waterflow Pressure Switch, One SPDT, 4–20 PSI Alarm Waterflow Pressure Switch, Two SPDT, 4–20 PSI ULC/Canadian Version ULC/Canadian Version Replacement Parts S07-66-02 Replacement Tamper Screws for Cover of EPS WFDW Replacement Tamper Proof Wrench for Cover of EPS 546-8000 Cover Tamper Switch for EPS Series 3825 Ohio Avenue • St. Charles, IL 60174 Phone: 800-SENSOR2 • Fax: 630-377-6495 www.systemsensor.com EPS10 WATER BY-PASS VALVE WATER MOTOR GONG Ordering Information EPS10-2 TO SPRINKLER CHECK VALVE DRY SYSTEM MODEL EPS10-1 MODEL EPS10-1 AT 0 PSI SWITCH AT 0 SWITCH PSI B B COM COM A A CO GROUND SCREW (GREEN) OS & Y VALVE OS & Y VALVE EPS10 WIRE TO ALARM INDICATING CIRCUIT OF FIRE ALARM CONTROL PANEL Electrical Connections 41/4˝ WATER LOCKING MOTOR SCREW GONG DRY PIPE VALVE WET SYSTEM WET SYSTEM ALARM CHECK VALVE TO SPRINKLER SYSTEM RETARD LOCAL ALARM SHUT OFF VALVE TO SPRINKLER 51/8˝ SYSTEM WIRE TO ALARM INDICATING CIRCUIT OF FIRE ALARM CONTROL PANEL EPS10 ©2014 System Sensor. Product specifications subject to change without notice. Visit systemsensor.com for current product information, including the latest version of this data sheet. WFDS51702 • 12/14