210.100-IOM (JUL 2021)
Page 35
AcuAir Hygienic Air Units
Installation
Installing a 4 in. pleated panel (pre)
filters
These instructions are for installing 4 in. panel filters into
type-8 holding frames.
• Latches needed for these applications are four clips as
indicated in the table on page 30
.
• Install a single latch at each of the four corners of the
frame.
•
The latch fits into the set of knockouts, which consists
of two rows of three knockouts. Use the row of knock-
outs closest to the gasketing for filters with a 13/16
in. single header in combination with a nominal 2 in.
prefilter. Use the second set of knockouts for nominal
4 in. filters.
Installing spring latches
1. Insert the straight end of the latch between the two
knockouts furthest from the corner.
2. Using a moderate amount of pressure, force the latch
over the third knockout. Repeat the installation process
with the remaining latches.
3.
Insert the filter into the frame making sure that the
pleats are vertical.
4.
After the filter has been placed into the frame, grasp
the loose end of the latch and place it over the filter
frame, so that the latch secures the filter into the
frame.
5. Repeat for the remaining latches.
6.
Ensure the filter is securely installed into the frame.
Installing latches
1. Insert the straight end of the latch between the two
knockouts furthest from the corner.
2. Using a moderate amount of pressure, force the latch
over the third knockout
.
3. After installing the latch correctly, the latch is trapped
within the three knockouts but can freely rotate
.
Repeat the installation process with the remaining
latches.
4. Rotate all of the latches outward, and insert the SH
filter into the frame
.
Insert the bulk of the filter through
the frame, protruding out the backside. Ensure only
the header of the filter is contacting the flange of the
frame.
5.
After the filter has been placed into the frame, grasp
the circular end of the latch and rotate it across the
corner of the filter
.
6.
Push the end of the latch towards the filter, until the
latch catches beneath the knockout on the frame. Re-
peat for the remaining latches.
7.
Ensure the filter is securely installed into the frame
Installing a rigid DH double-
headered filter
These instructions are for installing a rigid DH double-
headered filter (nominal 12 in. deep double header) into a
type-8 holding frame.
• The latches needed for this application are four clips.
See
.
• Attach two latches on each side of the frame.
• Only install the latches, two each side of the frame. Do
not use latches on the top or bottom. This is done to
match the holes in the filter frame, used to secure the
latch to the filter. See
for the sets of knock-
outs to use for the latches.
Figure 42: Correct use of knockouts
DO NOT USE!
USE THESE!
Installing spring latches
1. Insert the straight end of the latch between the knock-
outs furthest from the corner.
2. Using a moderate amount of pressure, force the latch
over the third knockout
.
3. After installing the latch correctly, the latch is trapped
within the three knockouts.
Figure 43: Correct latch/knockout configuration
4. Repeat the latch installation with the remaining latches.
Note the orientation of the latch to the knockouts in
.
