Frick AcuAir, Manual, Page: 12 / 58

210.100-IOM (JUL 2018)
Page 12
ACUAIR
®
HYGIENIC AIR UNITS
INSTALLATION
Roof Curb Assembly (Optional)
1. When supplied by Johnson Controls - AcuAir
®
, roof
curbs ship either fully welded or in pieces. If bolted curb
construction, bolt together.
2. Curb must be level (shim if required). Shims (at fractions
of inch) should be placed at intervals no greater than 5 feet
apart. Shims are not intended to compensate for roof pitch.
Individual stacks if shims should not exceed 1/2" in height. On
large units with splits, remember to shim at the split’s midspan
(see Figure 8).
3. The installer is responsible to secure the roof curb to the
building structural support in accordance with local codes.
4. Seal all roof curb joints and seams with a suitable sealer/
polyurethane caulk to prevent water leakage.
Roof Curb Installation
1. Verify that the curb is level and secured to the roof.
2. Verify that there is adequate height between the base of
the unit and the roof to allow for drain trapping.
3. Install a 1/8" thick neoprene gasket on the top of the curb
to provide a seal between the unit and the roof curb. If the
unit or unit sections must be slid into place, a polyurethane
sealant may be used in lieu of the gasket.
4. Lift the unit in place.
5. The installer is responsible to secure installation in
accordance with the local codes.
Figure 8 – Roof Curb Detail
SPLIT
MIDSPAN
GENERAL SPLIT UNIT REASSEMBLY
Units which are shipped in sections, must be installed on a
proper foundation and carefully assembled to provide the
required unit performance.
• AcuAir units are assembled in one piece in our factory and
split prior to shipping.
• AcuAir units must be level for reassembly.
• All bolts, nuts, washers,
split covers and polyurethane
caulking (if required) can be found in supply fan section.
• All splits are identified with welded let -
ters on the base channel (A-A, B-B, for
example) to indicate which sections are
to match up for reassembly.
REMOVABLE LIFTING LUGS
You will be provided with removable lifting lugs along either
the width or length of the various sections of the unit. (Lifting
lugs may be repositioned prior to lifting). Once the sections
have been placed as close as possible to each other, remove
any lifting lugs in the reconnect split. A hand-actuated winch or
a come-along can be used to bring the unit sections together
for final bolting. Attach the hand winch or come-along to each
side of the base using the lifting lugs relocated to the alternate
side locations and draw the sections together.
ELECTRICAL WIRING/PIPING
It is the installer’s responsibility to reconnect all internal and
external electrical or piping splits. All wires are colored and/
or numbered to designate which wires should be joined at
each split. Before turning on power, check all electrical circuits
for continuity.
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