BASIS OF DESIGN IS XTRALIS, INC VESDA AIR SAMPLING SMOKE DETECTION APPARATUS.
PROVIDE NECESSARY UNIT(S) AND PIPING TO SAMPLE AREAS INDICATED ON THE DRAWINGS. PROVIDE THE FOLLOWING MONITORING PER AIR SAMPLING SMOKE DETECTION APPARATUS AS A MINIMUM TO THE FIRE
ALARM CONTROL PANEL: POWER SUPERVISION, FAULT, PRE-ALARM AND ALARM CONDITIONS. PROVIDE ADDITIONAL MONITORING AS REQUIRED BASED ON THE MANUFACTURER'S RECOMMENDATIONS.
MOUNT AIR SAMPLING SMOKE DETECTION APPARATUS 48 INCHES (1.2M) TO 60 INCHES (1.5M) TO TOP OF DETECTOR MEASURED ABOVE FINISHED FLOOR.
REFER TO VESDA INSTALLATION DETAIL #1
PROVIDE LISTED AND APPROVED REGULATED POWER SUPPLY OF NOMINALLY 24VDC.
POWER SUPPLY SHALL BE PROVIDED WITH APPROPRIATELY SIZED/RATED BATTERIES TO ACCOMMODATE THE SYSTEM(S) POWER REQUIREMENTS FOR A DURATION OF TIME REQUIRED BY THE LOCAL AHJ IN THE EVENT
MAIN AC POWER IS INTERRUPTED.
AIR SAMPLING PIPE DISTRIBUTION NETWORKS SHALL BE CONSTRUCTED USING RIGID PIPE MOUNTED TO THE UNDERSIDE OF THE STRUCTURAL CEILING. REFER TO VESDA INSTALLATION DETAIL #2.
SAMPLING POINTS SHALL BE DRILLED DIRECTLY INTO THE AIR SAMPLING PIPE DISTRIBUTION NETWORK, BE ORIENTED DOWNWARD AND BE WITHIN 1 TO 4 INCHES (25 TO 101MM) BELOW THE UNDERSIDE OF THE
STRUCTURAL CEILING/ FALSE FLOOR. REFER TO VESDA INSTALLATION DETAIL #2 AND #5.
FOR STRUCTURAL CEILINGS THAT HAVE BEAMS, GIRDERS, SOLID JOIST OR A WAFFLE-LIKE CONSTRUCTION, ETC, AIR SAMPLING PIPE DISTRIBUTION NETWORKS SHALL MOUNT TO THE UNDERSIDE OF STRUCTURAL BEAMS
WITH STANCHIONS HAVING SAMPLING POINT EXTEND UP INTO EACH BEAM POCKET AT LOCATIONS WHERE SAMPLING POINTS ARE REQUIRED. REFER TO VESDA INSTALLATION DETAIL #3
WHERE DROP CEILING ARE PRESENT SAMPLING POINTS SHALL BE REMOTELY MOUNTED TO THE UNDERSIDE OF THE DROP CEILING, BE ORIENTED DOWNWARD AND BE WITHIN 1 TO 4 INCHES (25 TO 101MM) BELOW
UNDERSIDE OF THE DROP CEILING. REFER TO VESDA INSTALLATION DETAIL #4.
SAMPLING POINTS SHALL BE A MINIMUM OF 4FT AWAY FROM AIR SUPPLY DIFFUSERS AND BE INSTALLED IN AN AREA ON THE CEILING THAT IS FREE FROM OBSTRUCTIONS FOR A MINIMUM OF 18 INCHES ON ALL SIDES.
PLACEMENT OF SAMPLING POINTS NEAREST TO WALLS SHALL BE GREATER THAN 12 INCHES (304mm) AND NOT EXCEED 7FT (2.15m).
AIR SAMPLING PIPE DISTRIBUTION NETWORKS SHALL BE CONSTRUCTED USING RIGID PIPE MOUNTED TO FACE OF RETURN AIR GRILLES PRIOR TO FILTRATION IN ACCORDANCE WITH MANUFACTURER'S GUIDELINES.
SAMPLING POINTS SHALL BE DRILLED DIRECTLY INTO THE AIR SAMPLING PIPE DISTRIBUTION NETWORK, BE ORIENTED DOWNWARD 33 TO 45 TOWARDS THE INCOMING AIRFLOW AND SHALL NOT BE PLACED
OUTSIDE OF GRILLE AREA. REFER TO VESDA INSTALLATION DETAIL #4. SAMPLE POINT SPACING FOR RETURN AIR GRILLE DETECTION SHALL BE BASED UPON SAMPLING POINT DISTRIBUTION OF A MAXIMUM OF ONE (1)
SAMPLE POINT PER EVERY FOUR (4) SQUARE FEET OF GRILLE AREA.
SAMPLING POINTS COVERING RETURN AIR GRILLES SHALL STANDOFF 3 TO 6 INCHES FROM THE GRILLE IN ORDER TO AVOID THE LOW OR NEGATIVE PRESSURE POINT DIRECTLY AT THE GRILLE SURFACE. A MEANS TO
DISCONNECT THE SAMPLING PIPE FROM RETURN AIR GRILLES SHALL BE PROVIDED AND BASED ON MANUFACTURER'S GUIDELINES. MECHANICAL STANDOFF FASTENERS USED TO SUPPORT THE SAMPLING PIPE NETWORK
SHALL BE FIT FOR PURPOSE. PLASTIC ZIP TIES ARE NOT PERMITTED. REFER TO VESDA INSTALLATION DETAIL #5 .
A BENCHMARK TEST POINT SHALL BE PROVIDED AT THE FURTHEST END OF EACH PIPE RUN, OPPOSITE END OF THE ASSD APPARATUS. PROVISIONS SHALL BE MADE SO THAT THE TEST POINT CAN BE LOCATED WITHIN 4FT
(1.22M) ABOVE FINISHED FLOOR. THE TEST POINT SHALL BE CONSTRUCTED USING A NORMALLY CLOSED INDUSTRIAL QUICK CONNECT FITTING WITH AN ORIFICE OF NOMINAL 1/8 INCH (3.2MM) WHEN OPEN TO
FACILITATE BENCHMARK PERFORMANCE VERIFICATION. THIS REMOTE TEST POINT IS INTENDED TO BENCHMARK SYSTEM PERFORMANCE AT TIME OF INITIAL COMMISSIONING AND DURING ROUTINE TEST AND
INSPECTION. THE TEST POINT SHALL BE LABELED DOCUMENTING BENCHMARK SYSTEM PERFORMANCE AT TIME OF COMMISSIONING USING MANUFACTURER SUPPLIED LABELS INTENDED FOR THIS PURPOSE.
BENCHMARK LABELS SHALL BE PLACED JUST ABOVE TEST POINTS AND BE POSITIONED SO THAT THEY ARE VISIBLE WITHOUT OBSTRUCTION. REFER TO VESDA INSTALLATION DETAIL #6
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