FläktGroup SEMCO Ascendant, Руководство пользователя

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15 14
SPECIALIZED
HEALTHY
AIR SOLUTIONS
SPECIALIZED
HEALTHY
AIR SOLUTIONS
OWNER’S MANUAL OWNER’S MANUAL
ASCENDANT
™
ASCENDANT
™
SPECIALIZED
HEALTHY
AIR SOLUTIONS
OWNER’S MANUAL
FIGURE 28.
Quantity and size of filters in standard units
WHEN TO REPLACE FILTERS
MODEL SIZE
SIZE 5 SIZE 9 SIZE 13 SIZE 18 SIZE 24
SA FILTER
QTY AND
SIZE
24" x 24" (4) 24" x 24" (4) 24" x 24" (6) 24" x 24" (9) 24" x 24" (12)
— 12" x 24" (4) 12" x 24" (3) 12" x 24" (3) 12" x 24" (4)
EA FILTER
QTY AND
SIZE
24" x 24" (2) 24" x 24" (2) 24" x 24" (3) 24" x 24" (6) 24" x 24" (8)
12" x 24" (2) 12" x 24" (3) 12" x 24" (3) 12" x 24" (2) —
It is recommended that filters be changed when the
pressure differential gauge reaches the final resistance
rating illustrated in
FIGURE 26
and
FIGURE 27
(on
PAGE
14 ). Experience with the new system may suggest
changing filters at a slightly higher or lower reading.
Depending upon the total volume of air required in
the building, altering the replacement differential may
be necessary. But waiting to change filters when the
pressure differential reaches or approaches a higher-
than-recommended figure would mean using packed
air filters that seriously reduce airflow.
If the system is ordered with final filters, then these will
be located behind the pre-filters.
The procedure for removing the old filters and installing
new ones is the same as described on
PAGES 5
and
6
.
For systems equipped with pre-filter and final filter
banks, it is recommended that pre-filter banks be
changed twice as often as final filters.
For air filter replacement, a rigid, cell-type filter that
matches the specifications shown in the
PRE-FILTER
AND FINAL FILTER CAPACITY AND RESISTANCE TABLES
is recommended.
SPECIALIZED
HEALTHY
AIR SOLUTIONS
OWNER’S MANUAL
FIGURE 26. Pre-filter Capacity and Resistance Data
•
PRE-FILTER CAPACITY AND RESISTANCE DATA
FILTER
DEPTH
NOMINAL
SIZE
(INCHES)
ACTUAL SIZE
(INCHES)
CAPACITIES (CFM)
RESISTANCE AT CAPACITY
(INCHES W.G)
WIDTH HEIGHT DEPTH MEDIUM HIGH MEDIUM HIGH FINAL
4"
12x24x4 11.38 23.38 3.88 600 1,200 0.12 0.35 0.90
24x24x4 23.38 23.38 3.88 1,200 2,400 0.12 0.35 0.90
2"
12x24x2 11.38 23.38 1.88 500 1,000 0.08 0.28 0.90
12x24x2 23.38 23.38 1.88 1,000 2,000 0.08 0.28 0.90
12" FINAL FILTER CAPACITY AND RESISTANCE DATA*
FILTER MEDIA
EFFICIENCY
NOMINAL SIZE
(INCHES)
ACTUAL SIZE
1
(INCHES)
AIRFLOW CAPACITY
(CFM)
RESISTANCE (IN.WG.)
WIDTH HEIGHT INITIAL FINAL
2
60-65%
12x24 11.38 23.38 1,000 0.29 1.5
24x24 23.38 23.38 2,000 0.29 1.5
80-85%
12x24 11.38 23.38 1,000 0.50 1.5
24x24 23.38 23.38 2,000 0.50 1.5
90-95%
12x24 11.38 23.38 1,000 0.68 1.5
24x24 23.38 23.38 2,000 0.68 1.5
FIGURE 27.
12” Final Filter Capacity & Resistance Data
*NOTES:
1) Actual depth of the 12" filter is 11.50"
2)
Maximum recommended final resistance. System design may require a lower change-out reistance.
Maximum operating temperature limit for the filters is 180ºF in continuous operation and 200ºF in intermittent operation.