ESL 770 Series Projected Beam Smoke Detector Installation Instructions

Transcription

1 ESL 770 Series Projected Beam Smoke Detector Installation Instructions U L LISTED The ESL 770 projected beam smoke detector consists of an optical transmitter and receiver and a control panel. A pulsed infrared beam is projected from the transmitter to the receiver. The beam is then continuously monitored by the control panel for interference caused by smoke. When smoke is present in the beam for 8 to 10 seconds, the detector sends an alarm. The detector is especially useful in applications where hallways and longer rooms need coverage. One detector can be used in place of several spot detectors. The detector is designed for use with a 24VDC auxiliary power supply from a main control panel. The detector can be configured for reflected beam operation for use in difficult applications. See Using eflected Beam Operation.! WANING It is important that you read, understand, and follow these instructions. If you have questions, call Sentrol at This document is intended for licensed electricians/ alarm installers. Sentrol cannot provide technical support to unqualified persons. Failure to properly install, test, and maintain a smoke detector system may cause it to fail resulting in loss of life and/or property. Selecting a Location Selecting a suitable location is critical to the operation of smoke detectors. To determine how many detectors you need and where to place them, you should follow the guidelines established by the National Fire Protection Agency (NFPA 72). In addition to NFPA 72, use the following guidelines to determine the best location for the detector components: The transmitter, receiver, and 770 control panel mount directly to walls. The 770 control panel should be located for easy access. The 770 control panel must be located so that the cable connecting it to the receiver is between 15 feet and 330 feet in length. Mount the transmitter and receiver at least 17 inches away from walls and ceilings as shown in Figure 1. The range for the transmitter/receiver is 33 to 330 feet. At 330 feet the beam has a diameter of approximately 10 feet and the detection coverage on either side of the beam is 25 feet. The maximum total coverage area is 16,500 square feet (50 feet x 330 feet). oute cables away from existing electrical cables and switchgear. The transmitter and receiver must be in clear view of each other. The receiver must be installed where strong light sources, artificial or natural, DO NOT project directly into the receiver lens. Parts List The following parts are included with the detector: Optical transmitter with clear lens Optical receiver with dark lens 770 control panel 2 angle brackets 4 screws Plastic control panel key Plastic test filter Important: In addition to the parts provided, you will need four screws for mounting the 770 control panel. 17in min. 25ft max. 50ft max. 50ft max. 17in min. 25ft max. Figure 1 - Locating the Detector 1

2 Locating in Peaked oofs A ceiling or roof with a slope in excess of 3.5 degrees should be considered a peaked roof. When the detector is installed in the tip of a peaked roof, the horizontal distance increases by 1% for each degree of ceiling slope up to 25% as shown in Figure 2. This only applies to a detector when it is installed in the tip of the peaked roof ' min. 10 Peaked oof 50'+ 2.5' 50'+2.5' 25' min. 6. Align the receiver head as close as possible with the transmitter head and carefully tighten the two thumbwheel screws on the receiver. 7. Connect system wiring as indicated in Figure 4. Both, the transmitter and receiver heads come with a 3.3 foot cable that should be connected to the system wiring. 8. Verify that the eset/test switch located in the control panel is in the ON position. 9. Turn the Signal Level potentiometer in the control panel to the midway position. 10. Connect the power supply to the control panel and verify that it is 24VDC within tolerance at the transmitter and control panel. The signal high or low LEDs may be on. 11. Align the transmitter and receiver. See Using a Voltmeter to Align the Transmitter and eceiver or Using an LED Alignment Meter to Align the Transmitter and eceiver. 12. Test the detector. See Testing the Detector. 30 Peaked oof ' max (25' + 25' +12.5') Figure 2 - Locating the Detector in Peaked oofs Installing the Detector Use the following steps to install the detector: Caution: You need to use an antistatic wrist strap when accessing the 770 control panel circuit board. 1. emove the appropriate knockouts on the 770 control panel sides to accommodate the system wiring. 2. Set the appropriate options in the 770 control panel. See Setting the Switches. 3. Mount the 770 control panel on a firm secure wall with four screws (not provided). 4. Set the transmitter range. See Setting the ange. 5. Mount the transmitter and receiver heads on the right-angle fixing brackets and position them on the line of sight. See Figure 3. Setting the Switches The options described in the following table are set from a switch pack on the 770 control panel circuit board as shown in Figure 4. Switch A larm Latch Controls the alarm reset. COMP 25%, 33%, 50% (Sensitivity) Open = Automatically resets when the alarm condition is no longer present. C losed = Manual reset. Factory Default Determines what happens compensation runs out. when the drift Open = Trouble signal is sent and further d egradation triggers an alarm. Factory Default. C losed = Trouble signal is sent. Selects the percentage of smoke density necessary to trigger an alarm. Open the switch to select a setting as follows: 25% = Used in a clean environment such as a computer room or office. 35% = Used for normal operation in most e nvironments. Factory Default. 50% = Used for reflected beam operation. 2

3 Setting the ange 1. emove the small white grommet on the transmitter head to access the range potentiometer. See Figure Use the following table to determine the appropriate range setting for an application. Thumbscrew Setting Grommet 10m 33 feet 30m 34 to 98 feet 100m 99 to 330 feet Fixing Bracket 3. Use a small flat-head screwdriver to move the potentiometer so the arrow points to the desired setting. Figure 3 - Mounting the Transmitter/eceiver elay wiring as required x Y B Signal x Low Signal Level High Trouble LED Test/eset ON OFF SW5 N/O N/C COM N/O N/C COM A L A M T O U B L E 100mA eset Test Meter Terminals Alarm Latch COMP 25% 33% 50% S U P P L Y 2 4 V B May be same power supply as for the detector control panel. emote reset switch or relay close momentarily to reset Figure 4 - Wiring Diagram 3

4 Using an LED Alignment Meter to Align the Transmitter and eceiver An alignment meter is optional and can be ordered through your distributor. Use the following steps to align the transmitter and receiver using the alignment meter: 1. Use a 3-conductor cable to connect the alignment meter to the 770 control panel as follows: Connect this on the alignment meter + V (red) +24V supply -V (black) -24V supply Meter O/P (yellow) To this on the circuit board in the detector control panel + Test meter terminal 2. Place the alignment meter so the LED indicator is within view of the transmitter. 3. Adjust the transmitter vertically and horizontally until you achieve the fastest blinking rate on the test meter LED. The LED should be on steadily when the alignment is successful. 4. At the 770 control panel, adjust the Signal Level potentiometer counter clockwise until the Sig Hi LED goes off. Both Sig Hi and Sig Lo LEDs should be off. 5. Set the eset/test switch to the OFF position. Both LEDs must be off before you set the eset/test switch to off or the drift compensation will not function. 6. Wait at least 45 seconds for the system to self calibrate before performing any tests. Testing the Detector Use the following steps to test the smoke detection: 1. Hold the plastic test filter in the beam path. After approximately 9 seconds, the alarm relay should switch and the red alarm LED should light. The alarm LED is located on the front cover of the 770 control panel. 2. emove the test filter and the alarm should reset after approximately 4 seconds. If the 770 control panel is set to manual reset, the alarm does not automatically reset. See esetting the Alarm. Use the following steps to test the trouble relay and indicator: 1. Block the beam completely. After about 10 seconds, the trouble relay should switch and the yellow trouble LED should light. The trouble LED is located inside the 770 control panel. 2. Clear the beam. After approximately 4 seconds, the trouble LED should reset. Using a Voltmeter to Align the Transmitter and eceiver Use the following steps to align the transmitter and receiver using a voltmeter: 1. Connect the leads of a DC voltmeter (set to 10V range) to the + and Test Meter terminals in the 770 control panel. 2. Adjust the transmitter vertically and horizontally until the maximum voltage is measured on the voltmeter. Maximum voltage is approximately 5V. The reading should be approximately 2.6V when no signal is present. 3. Carefully tighten the two thumbwheel screws on the transmitter securely. 4. At the 770 control panel, adjust the Signal Level potentiometer counter clockwise until the Sig Hi LED goes off. Both Sig Hi and Sig Lo LEDs should be off. 5. Set the eset/test switch to the off position. Both LEDs must be off before you set the eset/test switch to off or the drift compensation will not function. 6. Wait at least 45 seconds for the system to self calibrate before performing any tests. Troubleshooting Use the following steps to determine the cause of a trouble indication: Verify that the Test/eset switch in the 770 control panel is in the OFF position allowing normal operation. Check for beam blockage. If 93% or more of the beam is blocked for approximately ten seconds, a trouble condition is indicated. Check the drift compensation. When the detector runs out of drift compensation, a trouble condition is indicated. If the detector is out of compensation, the alignment reading from the test meter outputs will be significantly lower than 4.1V. Verify that power is present at the detector control panel and transmitter. Loss of power will cause a trouble condition. Check beam alignment. Incorrect alignment may cause a trouble condition. 4

5 Using eflected Beam Operation The detector can be used in a reflected beam configuration where the transmitter and receiver heads are mounted adjacent to each other and the beam is reflected off one or more prisms mounted on the opposite wall. eflected beam operation is used for applications where access to the opposite wall is restricted or wiring is difficult. In addition to the installation instructions (See Installing the Detector), use the following instructions to configure the detector for reflected beam operation: 1. Set the sensitivity switch to 50%. See Setting the Switches. 2. Mount the transmitter and receiver heads adjacent to one another as closely as possible. 3. Mount prism(s) on the opposite wall. Prism(s) should be mounted at right angles to the beam. There must be a clear line of sight between the transmitter head, prism(s) and receiver head. For more information, see the prism installation instructions. 4. Once the system is aligned and tested, test the reflected beam operation as follows: -Block the beam in front of the prisms. The trouble LED should light. -If no trouble is indicated, the beam may be being reflected via a surface other that the prisms. Ordering Prisms Call to order prisms. The number of prisms required for a reflected beam application varies depending on the beam range as described in the following table: Beam ange 6.5 to 82 feet 1 82 to 115 feet to 148 feet 6 Prisms required esetting the Alarm The alarm may be reset using any of the following methods: Set the Alarm Latch switch to open for automatic reset. Use the eset/test switch on the 770 control panel. Install a remote reset switch. See Figure 4. emove power to the 770 control panel for 1 second. Maintenance Very little maintenance is required for reliable operation of the ESL 770 Series smoke detector. Wipe the optical lenses with a clean, lint-free cloth once a year, depending on the environmental conditions. Limited Warranty Sentrol is a brand name of SLC Technologies, Inc. The manufacturer warrants this smoke detector (except batteries) to be free from defects in material and workmanship under conditions of normal use for a term of 3 years from the date of manufacture. During the warranty period, if a Sentrol product or any of its components becomes defective, it will be repaired or replaced without charge at the manufacturer s discretion. This warranty does not apply to units which have been subject to abuse, misuse, negligence or accident, or to which any modifications, alterations or repairs have been made or attempted. This warranty is extended only to the original purchaser of the smoke detector and may be enforced only by such person. The defective smoke detector must be returned in accordance with the following instructions: Obtain a eturn Authorization Number by calling or , then carefully pack it in a well padded and insulated carton and return, postal charges prepaid to: Customer Service Sentrol SW Leveton Drive Tualatin, O A note should be included advising the nature of the malfunction. Care must be exercised in the proper packing of detectors returned under this warranty as Sentrol will not be responsible for warranty repairs to equipment damaged because of improper packing. THE ABOVE WAANTY IS IN LIEU OF ALL OTHE EXPESS WAANTIES, AND IMPLIED WAANTIES OF MECHANTABILITY AND FITNESS FO A PATICU- LA PUPOSE AE LIMITED IN DUATION FO A PE- IOD OF 3 YEAS FOM THE DATE OF MANUFAC- TUE. UNDE NO CICUMSTANCES SHALL MANU- FACTUE BE LIABLE TO THE PUCHASE O ANY OTHE PESON FO INCIDENTAL O CONSEQUEN- TIAL DAMAGES OF ANY NATUE, INCLUDING WITH- OUT LIMITATION DAMAGES FO PESONAL INJUY O DAMAGES TO POPETY, AND HOWEVE OCCA- SIONED, WHETHE ALLEGED AS ESULTING FOM BEACH OF WAANTY BY MANUFACTUE, THE NEGLIGENCE OF MANUFACTUE O OTHEWISE. MANUFACTUE S LIABILITY WILL IN NO EVENT EX- CEED THE PUCHASE PICE OF THE PODUCT. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WAANTY LASTS, O THE EXCLUSION O LIMITATION OF INCIDENTAL O CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS AND EXCLU- SIONS MAY NOT APPLY TO YOU. UNLESS A LONGE PEIOD IS EQUIED BY APPLICABLE LAW, ANY AC- TION AGAINST MANUFACTUE IN CONNECTION WITH THIS SMOKE DETECTO MUST BE COM- MENCED WITHIN ONE YEA AFTE THE CAUSE OF ACTION HAS OCCUED. No agent, employee or representative of the Manufacturer nor any other person is authorized to modify this warranty in any respect. epair or replacement as stated above is the exclusive remedy of the purchase hereunder. This warranty gives you specific legal rights and you also have other rights which vary from state to state. 5

6 Specifications Operating voltage...24vdc (+10% -15%) Typical average standby current...13 ma Typical average alarm current...20 ma Transmitter current ma elay 24VDC Sensitivity photoelectric...25%,35%,50% Beam tolerance to misalignment at 35%: Transmitter...+/- 1 eceiver...+/- 4 Operating range...33 to 330 feet Operating temperature...-4 F to 131 F Operating humidity % non-condensing FI 100 Khz - 1 Ghz Color...white Field wiring size AWG Number of beam sets per 770 control panel...1 Weight: Control panel lbs eceiver w/ bracket...12 oz Transmitter w/ bracket...12 oz Dimensions (w x h x d): Transmitter head w/ brackets...4"x 3¼"x 3¾" eceiver head w/ brackets...4"x 3¼" x 3¾" Control panel...8½" x 10½" x 3½" Auto reset time...< 5 sec Warranty...3 years Listing...UL 268 Ordering Model number 771-kit 4-wire projected-beam detector consisting of transmitter, receiver, and control panel Accessories 770-meter LED alignment meter ESL a product of sentrol SENTOL SW Leveton Dr., Tualatin, O Tel.: Fax: U.S. & Canada: Technical Service: FaxBack: Sentrol reserves the right to change specifications without notice Sentrol ev B 01/00