035-000029-001
Page 33
HHA IOM 1.4 10/11/2021
INSTALLATION—FACTORY OPTIONS
Static Pressure Ports Option—
See Figure
16. Units provided with the “static ports”
option have 4ea static pressure taps to allow
connection to field APD gauges or other de-
vices to monitor filter loading. The taps have
factory tubing routed to a gauge block on the
side of the unit. The gauge block has 2
ports marked for the prefilters (2”/4”) and 2
ports for the final (HEPA) filter (“HEPA”).
Differential pressure across the first two
ports indicates the prefilter APD, and differ-
ential pressure across the 2nd pair of ports
indicates the final (HEPA) filter APD. The
ports indicated by “+” are the high side, and
the ports with “-” are the low side. Ports are
hose barb type connection, ready to accept
1/4” poly tubing.
Ports may be used for other purposes such
as balancing by installing field tubing and
devices as needed.
GAUGE BLOCK
STATIC PRESSURE
TUBING (FACTORY)
COVER
REMOVED
1/4-IN FPT FIELD
CONNECTIONS
FIELD TUBING
TO FIELD
GAUGES OR
OTHER
DEVICES
Fig. 16 — Static Ports Op-
tion Details
Содержание HHA Series
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Страница 24: ...035 000029 001 Page 24 HHA IOM 1 4 10 11 2021 Service Clearances Arrangement B No integral Final Filter...
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