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System Sensor DNRA Installation And Maintenance Instructions Manual

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WARNING
INSTALLATION AND MAINTENANCE INSTRUCTIONS
I56-3104-004
DNRA Duct Smoke Detector
SPECIFICATIONS
Operating Temperature: –4° to 158° F (–20° to 70° C); 32° F to 120° F (0° C to 49° C) with module installed in the DNRA Storage Temperature: –22° to 158° F (–30° to 70° C) Humidity: 0% to 93% Relative Humidity Non-condensing Air Velocity: 100 to 4000 ft./min. (0.5 to 20.3 m/sec.) Rectangular Footprint Dimensions: 14.38 in L × 5 in W × 2.5 in D (37 cm L × 12.7 cm W × 6.36 cm D) Square Footprint Dimensions: 7.75 in L × 9 in W × 2.5 in D (19.7 cm L × 22.9 cm W × 6.35 cm D) Weight: 1.6 pounds; 0.73 kg Electrical (See applicable detector head installation manual for electrical specifications. To determine applicable sensor head, use the Base/Sensor Cross Reference chart at www.systemsensor.com (available on the Tools menu).
TABLE OF CONTENTS PAGE
[1] Limitations of Duct Smoke Detectors ................................................ 1
[2] General Description ......................................................................... 1
[3] Contents of the Duct Smoke Detector Kit .......................................... 1
[4] Detector Installation ....................................................................... 2
[6] Measurement Tests .......................................................................... 3
[7] Field Wiring; Installation Guidelines ................................................. 4
[8] Verification of Operation ................................................................. 4
[9] Cleaning ......................................................................................... 5
[10] Sensor Replacement ....................................................................... 5
[11] Optional Accessories ..................................................................... 5
Three-Year Limited Warranty .................................................................6
BEFORE INSTALLING
Read System Sensor’s Applications Guide for Duct Smoke Detectors (HVAG53), which provides detailed information on detector spacing, placement, zoning, wiring, and special applications. This manual is available online at www.systemsensor.com. NFPA Standards 72, 90A and CAN/ULC-S524 should also be referenced for detailed information.
NOTICE: This manual shall be left with the owner/user of this equipment.
[1] LIMITATIONS OF DUCT SMOKE DETECTORS
System Sensor supports this position and strongly recommends that the user read NFPA Standards 90A, 72,101 and CAN/ULC-S524. The DNRA Air Duct Smoke Detectors are ULC listed.
This device will not operate without electrical power. Fire situations may cause an interruption of power. The system safeguards should be discussed with your local fire protection specialist.
This device will not sense smoke unless the ventilation system is operating and the cover is installed.
DEVICE STANDBY ALARM
RA100ZA 0mA 12mA Max. RTS151 0mA 12mA Max. RTS151KEY-A
Only (A) models are ULC listed.
[2] GENERAL DESCRIPTION
Smoke introduced into this air duct system will be distributed throughout the entire building. Smoke detectors designed for use in air duct systems are used to sense the presence of smoke in the duct.
Model DNRA Air Duct Smoke Detector uses photoelectric technology for the detection of smoke. This detection method, when combined with an efficient housing design, samples air passing through the duct and allows detection of a developing hazardous condition. When sufficient smoke is sensed, an alarm signal is initiated at the fire control panel monitoring the detector, and appro­priate action can be taken to shut off fans, blowers, change over air handling systems, etc. These actions can facilitate the management of toxic smoke and fire gases throughout the areas served by the duct system.
When programmed with the system control panel, two LEDs on each duct smoke detector light to provide local visible indication.
The DNRA provides a remote alarm output for use with auxiliary devices, such as the RA100ZA remote LED annunciator, as well as remote test capabil­ity with the RTS151 or RTS151KEY-A Remote Test Stations.
[2.1] DETECTOR FEATURE SET
– Uses plug-in head ULC-listed as compatible with the system control panel
– Sampling tubes install from front and rear
– Compatible with existing accessories
– Able to address detector per code switches on sensor head
[3] CONTENTS OF THE DUCT SMOKE DETECTOR KIT
1. Sensor/power board assembly, covers, and factory-installed sensor head
2. Three #10 sheet metal screws for mounting
3. Drilling template
4. One sampling tube end cap
5. One plastic exhaust tube
NOTE: A DST sampling tube must be ordered to complete the installation. It must be the correct length for the width of the duct where it will be installed. See Table 1 on page 2 to determine the inlet tube required for different duct widths.
ACCESSORY CURRENT LOADS AT 24 VDC
3333 Unity Drive, Mississauga, Ontario L5L 3S6
800/736-7672, FAX: 905-812-0771
www.systemsensor.ca
12mA 12mA Max.
1 I56-3104-004 4/18/2019
REMOVE SCREW AND PIVOT
REPLACE SCREW
FIGURE 1. EXPLODED VIEW OF DUCT SMOKE DETECTOR COMPONENTS
EXHAUST TUBE
SAMPLING
TUBE SOLD
SEPARATELY
SENSOR MODULE
SENSOR HEAD
SENSOR MODULE COVER
WIRING COMPARTMENT
WIRING COMPARTMENT COVER
H0569-20
NOTE: Sensor Module sold separately. Refer to the control panel technical documentation for compatible ULC-listed heads with Remote Test Capability.
[4] DETECTOR INSTALLATION [4.1] VERIFY DUCT AIR FLOW DIRECTION AND VELOCITY
[4.2] DETERMINE MOUNTING LOCATION AND CONFIGURATION
On ducts wider than 18 inches it is recommended that the detector be mounted downstream of a bend, obstruction in the duct, or the supply or return air inlet.
Exception: Installation of duct detectors can be on or within a commercial packaged rooftop heating and air-conditioning system, fire/smoke dampers and economizers. They may be mounted in either the supply and/or return air section as determined by local code.
Once a suitable location is selected, determine if the detector is to be mounted in a side-by-side “rectangular” configuration or a top-over-bottom “square” configuration as shown in Figure 2. If mounting in the square configuration, remove the rear attachment screw, rotate the unit at hinge, and replace the screw into the new attachment hole as shown in Figure 2. Do NOT remove the hinge screw during this process. Final installation approval shall be based upon passing differential pressure and smoke entry tests described in Section 6 Measurement Tests.
FIGURE 2.
DETECTOR AS SHOWN BELOW.
TO SECURE DETECTOR
IN PLACE.
[4.3.1] FOR RECTANGULAR SIDE-BY-SIDE MOUNTING CONFIGURATION
Center punch at four target centers: two “A” for sampling tubes and two “B” for the rectangular configuration mounting tabs as shown on mounting tem­plate. Drill pilot holes at target “A” centers and cut two 1.375 inch diameter holes using a 13⁄8-inch hole saw or punch. Drill .156 inch diameter holes using a 5⁄32 inch drill at target “B” centers.
[4.3.2] FOR SQUARE TOP-OVER-BOTTOM MOUNTING CONFIGURATION
Center punch at four target centers: two “A” for sampling tubes and two “C” for the square configuration mounting tabs as shown on mounting template. Drill pilot holes at target “A” centers and cut two 1.375 inch diameter holes us­ing a 13⁄8-inch hole saw or punch. Drill .156 inch diameter holes using a 5⁄32 inch drill at target “C” centers. If desired, drill an additional .156 inch hole at the location of one of the mounting tabs on the lower housing.
[4.4] SECURE THE DUCT DETECTOR TO THE DUCT
CAUTION: Do not overtighten the screws.
[5] SAMPLING TUBE INSTALLATION [5.1] SAMPLING TUBE SELECTION
The sampling tube must be purchased separately. Order the correct length, as specified in Table 1, for width of the duct where it will be installed. The sam­pling tube length must extend at least 5/8 across the duct width for optimal performance.
The sampling tube is always installed with the air inlet holes facing into the air flow. To assist proper installation, the tube’s connector is marked with an arrow. Make sure the sampling tube is mounted so that the arrow points into the airflow as shown in Figure 3. Mounting the detector housing in a vertical orientation is acceptable provided that the air flows directly into the sam­pling tube holes as indicated in Figure 3. The sampling tube and exhaust tube can be mounted in either housing connection as long as the exhaust tube is mounted downstream from the sampling tube.
TABLE 1. SAMPLING TUBES RECOMMENDED FOR DIFFERENT DUCT WIDTHS
[4.3] DRILL THE MOUNTING HOLES
Remove the paper backing from the mounting template supplied. Affix the template to the duct at the desired mounting location. Make sure the template lies flat and smooth on the duct.
2 I56-3104-004 4/18/2019
H0550-00
Outside Duct Width Sampling Tube Recommended*
Up to 1 ft. DST1
1 to 2 ft. DST1.5
2 to 4 ft. DST3
4 to 8 ft. DST5
8 to 12 ft. DST10 (2-piece)
*Must extend a minimum of 5⁄8 the duct width
FIGURE 3. AIR DUCT DETECTOR SAMPLING TUBE
SAMPLING TUBE ENDCAP
TO SAMPLING TUBE
ARROW MUST FACE
INTO AIR FLOW
AIR FLOW
DIRECTION
H0551-00
[5.2] SAMPLING TUBE INSTALLATION
1. For tubes shorter than the width of the duct, slide the sampling tube, with installed end cap, into the housing connection that meets the air­flow first. Position the tube so that the arrow points into the airflow as shown in Figure 3. Per NFPA sampling tubes over 3 feet long should be supported at the end opposite of the duct detector. In ducts wider than 8 feet, work must be performed inside the duct to couple the other section of the sampling tube to the section already installed using the ½-inch conduit fitting supplied. Make sure that the holes on both sections of the air inlet sampling tube are lined up and facing into the airflow.
2. For tubes longer than the width of the air duct, the tube should extend out of the opposite side of the duct. Drill a ¾-inch hole in the duct op­posite the hole already cut for the sampling tube. Ensure that the sam­pling tube is angled downward from the duct smoke detector to allow for moisture drainage away from the detector. The sampling tube should be angled at least ¼˝ downward for every 12˝ of duct width per Figure 4. There should be 10 to 12 holes spaced as evenly as possible across the width of the duct. If there are more than 2 holes in the section of the tube extending out of the duct, select a shorter tube using Table 1. Otherwise, trim the tube to leave approximately 1 to 2 inches extending outside the duct. Plug the end with the end cap and tape closed any holes in the protruding section of the tube. Be sure to seal the duct where the tube protrudes.
FIGURE 4.
1
/4˝
12˝
2˝
3
/4˝
HOLE
DETECTOR
H0215-00
NOTE: Air currents inside the duct may cause excessive vibration, especially when the longer sampling tubes are used. In these cases, a 3-inch floor flange (available at most plumbing supply stores) may be used to fasten the sam­pling tube to the other side of the duct. When using the flange/connector mounting technique, drill a 1 to 1¼-inch hole where the flange will be used.
[5.3] MODIFICATIONS OF SAMPLING TUBES
There may be applications where duct widths are not what is specified for the installation. In such cases, it is permissible to modify a sampling tube that is longer than necessary to span the duct width.
Use a 0.193 inch diameter (#10) drill and add the appropriate number of holes so that the total number of holes exposed to the air flow in the duct is 10 to 12. Space the additional holes as evenly as possible over the length of the tube.
CAUTION: This procedure should only be used as a temporary fix. It is not intended as a permanent substitute for ordering the correct length tubes.
[5.4] REMOTE SAMPLING TUBE INSTALLATION
The detector arrangement can also incorporate the remote mounting of the sampling tube and/or exhaust tube. In this case both the detector, sampling tube and exhaust tube (if included) should be rigidly mounted to withstand the pressure and vibrations caused by the air velocity. The location of the detector’s sampling tube should be such that there is uniform airflow in the cross section area.
Pressure differential across the sampling and exhaust ports in the detector housing shall be verified to be between 0.01 and 1.11 inches of water. Do so by measuring the pressure difference between the inlet and outlet ports on the detector housing using a manometer as described in Section 6 Measurement Tests.
[6] MEASUREMENT TESTS [6.1] AIR FLOW
The DNRA is designed to operate over an extended air speed range of 100 to 4000 FPM. To verify sufficient sampling of ducted air, turn the air handler on and use a manometer to measure the differential pressure between the two sampling tubes. The differential pressure should measure at least 0.01 inches of water and no more than 1.11 inches of water. Because most commercially available manometers cannot accurately measure very low pressure differen­tials, applications with less than 500 FPM of duct air speed may require one of the following: 1) the use of a current-sourcing pressure transmitter (Dwyer Series 607) or 2) the use of aerosol smoke, see below for test descriptions.
FIGURE 5. PROCEDURE FOR VERIFYING AIR FLOW
TO EXHAUST TUBE
HIGH
LOW
DIFFERENTIAL
PRESSURE
TRANSMITTER
MODEL #607-01
15 TO 36
VDC SUPPLY
9 VOLT
BATTERY
1000 OHM 5%
1 WATT RESISTOR
VOLT METER FLUKE
MODEL 87 OR
EQUIVALENT
+–
9 VOLT
BATTERY
9 VOLT
BATTERY
H0163-01
[6.2] LOW FLOW AIR FLOW TEST USING DWYER SERIES 607 DIFFERENTIAL PRESSURE TRANSMITTER
Verify the air speed of the duct using an anemometer. Air speed must be at least 100 FPM. Wire the Dwyer transmitter as shown in Figure 5. Con­nect the leads of the meter to either side of the 1000Ω resistor. Allow unit to warm up for 15 seconds. With both HIGH and LOW pressure ports open to ambient air, measure and record the voltage drop across the 1000Ω resistor (measurement 1), 4.00 volts is typical. Using flexible tubing and rubber stop­pers, connect the HIGH side of the transmitter to the sampling tube of the duct smoke detector housing, and the LOW side of the transmitter to the exhaust tube of the duct smoke detector housing. Measure and record the voltage drop across the 1000Ω resistor (measurement 2). Subtract the voltage recorded in measurement 1 from the voltage recorded in measurement 2. If the difference is greater than 0.15 volts, there is enough air flow through the duct smoke detector for proper operation.
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[7] FIELD WIRING; INSTALLATION GUIDELINES
ULC/FM LISTED CONTROL PANEL
IN LOOP
IN LOOP
TENS ONES
9
10
11 12
13
14
15
8
7
6
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1
0
CAUTION
All wiring must be installed in compliance with the Canadian Electrical Code and the local codes having jurisdiction. Proper wire gauges should be used. The conductors used to connect smoke detectors to control panels and acces­sory devices should be color-coded to prevent wiring mistakes. Improper con­nections can prevent a system from responding properly in the event of a fire.
For signal wiring (the wiring between detectors or from detector to auxiliary devices), it is usually recommended that single conductor wire be no smaller than 18 gauge. The duct smoke detector terminals accommodate wire sizes up to 12 gauge. Flexible conduit is recommended for the last foot of conduit; solid conduit connections may be used if desired.
Duct smoke detectors and alarm system control panels have specifications for Signaling Line Circuit (SLC) wiring. Consult the control panel manufacturer’s specifications for wiring requirements before wiring the detector loop.
[7.1] WIRING INSTRUCTIONS
Disconnect power from the communication line before installing the DNRA duct smoke detector.
FIGURE 6. SYSTEM WIRING DIAGRAM FOR DNRA
COMM. LINE (+)
COMM. LINE
COMM. LINE (–)
1ST DETECTOR
2ND DETECTOR
HO572CDN-00
[7.2] SET THE ADDRESS
Set the desired address on the sensor head code wheel switches on the back of the sensor head.
FIGURE 7. ROTARY ADDRESS SWITCHES
[8.4] DUCT SMOKE DETECTOR TEST & MAINTENANCE PROCEDURES
Test and maintain duct smoke detectors as recommended in CAN/ULC-S536. The tests contained in this manual were devised to assist maintenance person­nel in verification of proper detector operation.
Before conducting these tests, notify the proper authorities that the smoke detection system will be temporarily out of service. Disable the zone or system under test to prevent unwanted alarms.
[8.4.1] TEST THE UNIT
Verify system control panel alarm status and control panel execution of
all intended auxiliary functions (i.e. fan shutdown, damper control, etc.).
Two LEDs on the sensor are controlled by the panel to indicate sensor
status. Coded signals, transmitted from the panel, can cause the LEDs to blink, latch on, or latch off. Refer to the control panel technical docu­mentation for sensor LED operation and expected delay to alarm.
[8.4.2] THE DETECTOR MUST BE RESET BY THE SYSTEM CONTROL PANEL [8.4.3] SMOKE ENTRY TEST USING AEROSOL SMOKE
This test is intended for low-flow systems (100-500 FPM). If the air speed is greater than 500 FPM, use a conventional manometer to measure differential pressure between the sampling tubes, as described in Section 6 Measurement Tests.
Drill a ¼-inch hole 3 feet upstream from the duct smoke detector. With the air handler on, measure the air velocity with an anemometer. Air speed must be at least 100 FPM. Spray aerosol smoke* into the duct through the ¼-inch hole for five seconds. Wait two minutes for the duct smoke detector to alarm. If the duct smoke detector alarms, air is flowing through the detector. Remove the duct smoke detector cover and blow out the residual aerosol smoke from the chamber and reset the duct smoke detector at the panel. Use duct tape to seal the aerosol smoke entry hole. Remember to replace the cover after the test or the detector will not function properly.
Additionally, canned aerosol simulated smoke (canned smoke agent) may be used for smoke entry testing of the smoke detector. Tested and ap proved aero­sol smoke products are:
Manufacturer Model
HSI Fire & Safety 25S, 30S (PURCHECK) SDi SMOKE CENTURIAN, SOLOA4, SMOKESABRE, TRUTEST No Climb TESTIFIRE 2000
Note: Verify sensor cover gasket is properly seated on cover prior to cover installation.
[8] VERIFICATION OF OPERATION [8.1] INSTALL THE COVER
Install the covers making sure that the cover fits into the base groove. Tighten the seven screws that are captured in the covers. Note that the cover must be properly installed for proper operation of the sensor.
[8.2] POWER THE UNIT
Activate the communication line on terminals COM + and COM –.
[8.3] DETECTOR CHECK
Standby – If programmed by the system control panel, look for the presence of the flashing LEDs through the transparent housing cover. The LED will flash with each communication.
Trouble – If programmed by the system control panel and the detector LEDs do not flash, then the detector lacks power (check wiring, missing or improp­erly placed cover, panel programming, or power supply), the sensor head is missing (replace), or the unit is defective (return for repair).
4 I56-3104-004 4/18/2019
C0162-00
Canned aerosol simulated smoke (canned smoke agent) formulas will vary by manufacturer. Misuse or overuse to these products may have long term adverse effects on the smoke detector. Consult the canned smoke agent manu­facturer’s published instructions for any further warnings or caution state­ments.
[9] CLEANING
OUT (CONV ONL
Before removing the detector, notify the proper authorities that the smoke detector system is undergoing maintenance and will be temporarily out of service. Disable the zone or system undergoing maintenance to prevent un­wanted alarms.
1. Remove the sensor to be cleaned from the system.
2. Remove the sensor cover by pressing firmly on each of the four removal tabs that hold the cover in place.
4. Remove the chamber cover/screen assembly by pulling it straight out.
5. Use a vacuum cleaner or compressed air to remove dust and debris from the sensing chamber.
6. Reinstall the chamber cover/screen assembly by sliding the edge over the sensing chamber. Turn until it is firmly in place.
7. Replace the cover using the LEDs to align the cover and then gently push ing it until it locks into place.
8. Reinstall the detector.
9. Test the detector as described in TESTING.
10. Reconnect disabled circuits.
11. Notify the proper authorities that the system is back on line.
[10] SENSOR REPLACEMENT
1. Remove the sensor head by rotating counterclockwise.
2. Pull gently to remove it.
wise into place.
[11] OPTIONAL ACCESSORIES
Optional accessories include RA100ZA, RTS151 and RTS151KEY-A.
NOTE: Ensure blue wire always remains connected to RA+ on the field connector side of the terminal block.
FIGURE 8. WIRING DIAGRAM FOR DNRA TO RA100ZA
FIGURE 9. RTS151/RTS151KEY-A USING SENSOR WITH REMOTE TEST CAPABILITY
NOT USED
NOT USED
COMM +
RTS151/RTS151KEY
1
Y) +
COMM –
2
RA/RTS –
RA +
RTS +
[11.2] ADDITIONAL MODULE OPTION
The DNRA can also accommodate a relay or control module (sold separately) within the power board side of the housing. The relay or control module must be listed as compatible to the fire alarm control panel.
PHYSICAL MODULE MOUNTING
1. Remove the breakaway tabs at the four corners of the module.
2. Locate the module at right most corner of the power board. The upper left corner mounting hole of the module will align with a screw boss in the housing.
3. Install a #8×3⁄8˝ Plastite screw at the screw boss location.
Note: See the corresponding module's Installation Instructions for general description, control panel compatibility, wiring and ratings.
3
4
5
JUMPER
H0633-02
Note: Remove jumper when using RA100ZA with the intelligent duct smoke detector.
[11.1] REMOTE TEST USING SENSOR WITH REMOTE TEST CAPABILITY
Refer to the control panel technical documentation for compatible ULC-listed heads with Remote Test Capability.
To install the RTS151/RTS151KEY-A, using the sensor with remote test capability connect the device as shown in Figure 9; wire runs must be limited to 25 ohms or less per interconnecting wire.
NOTE: Resistor assembly must be in place between RA+ and OUT+ inside the DNRA for Remote Test function to operate.
+ RA
– RA
(+)
(-)
RA100ZA
REMOTE ALARM LED
OPTION 1 PER UNIT
H0570-05CDN
5 I56-3104-004 4/18/2019
Please refer to insert for the Limitations of Fire Alarm Systems
System Sensor warrants its enclosed product to be free from defects in materials and workmanship under normal use and service for a period of three years from date of man­ufacture. System Sensor makes no other express warranty for the enclosed product. No agent, representative, dealer, or employee of the Company has the authority to increase or alter the obligations or limitations of this Warranty. The Company’s obligation of this Warranty shall be limited to the replacement of any part of the product which is found to be defective in materials or workmanship under normal use and service during the three year period commencing with the date of manufacture. After phoning System Sensor’s toll free number 800-SENSOR2 (736-7672) for a Return Authorization number, send defective units postage prepaid to: System Sensor Canada (3PL), c/o Kuehne and Nagel,
Before installing this product ensure that the tamper seal on the packaging is present and unbroken and the product has not been tampered with since leaving the factory. Do not install this product if there are any indications of tampering. If there are any signs of tampering the product should be returned to the point of purchase. It is the responsibility of the system owner to ensure that all system components, i.e. devices, panels, wiring etc., are adequately protected to avoid tampering of the system that could result in information dis­closure, spoofing, and integrity violation.
System Sensor® is a registered trademark of Honeywell International, Inc.
6 I56-3104-004 ©2019 System Sensor. 4/18/2019
THREE-YEAR LIMITED WARRANTY
6335 Edwards Blvd., Mississauga, Ontario L5N 2W7, RA #__________. Please include a note describing the malfunction and suspected cause of failure. The Company shall not be obligated to replace units which are found to be defective because of damage, unreasonable use, modifications, or alterations occurring after the date of manufacture. In no case shall the Company be liable for any consequential or incidental damages for breach of this or any other Warranty, expressed or implied whatsoever, even if the loss or damage is caused by the Company’s negligence or fault. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
DEVICE AND SYSTEM SECURITY
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