8
Air Handling Unit
Installation, Operation, and Maintenance Manual
April 2021
6.2 Assembling Unit Sections
1.
Place unit sections as close to their final
installation position as possible, making sure
all sections are correctly oriented to mating
sections. Serial numbers for each section will
be on the same side and in order, SNXXXXX-1,
SNXXXXX-2, etc., continuing for all sections of
unit.
2. Remove bolts along unit split planes on wall and
roof panels. Remove shipping lugs if installed
between unit sections. Remove plastic covering
the unit split opening.
3. Install panel joint gasket, ClimateCraft part
number PGSK-001-001 along base frame tube.
Two pieces of gasket material should be used
as shown in Figure 6-5. The first piece of gasket
should be at floor level with wide portion of
“T” gasket close to top of base rail following its
radius. The second piece should be inverted and
close to the center of the tube. Both pieces of
gasket need to be installed using the double-
sided tape provided in loose parts box inside
unit. Gasket material should extend beyond
edges of each section. Gasket installation must
be done before sections are pulled together.
4. Install panel joint gasket, ClimateCraft part
number PGSK-001-001, on wall and roof panel
flanges. If the sections are level, plumb and at
the same height, all wall panel and roof panel
bolt holes should be aligned. If they are not,
the condition preventing alignment must be
corrected prior to pulling the sections together.
See Section 6.1 above.
5. Maneuver unit sections into final position.
Ensure base frames are as close as possible
(touching) while maintaining hole alignment.
6. Draw unit sections together using section split
assembly hardware. DO NOT ATTEMPT TO
DRAW THE SECTIONS TOGETHER USING THE
PANEL BOLTS.
7. Check unit for proper alignment prior to bolting
of wall panels and roof sections. If unit is not
square and plumb it is possible for air/water
leaks to occur. Proper alignment of roof rails can
be seen at the section joints, roof rails should
be almost touching and flush together if unit is
level, square and plumb.
8. Once the sections are together, insert panel
bolts and nuts along roof and wall panels.
Tighten bolts and nuts securely.
9. After verifying unit section bases are touching
along unit split planes, caulk joint between
adjacent base frame sections and at end seam
of roof panel joints of unit.
10. Units that are wider than 12 feet and/or have
a steel roof frame instead of aluminum require
caulk along the roof rail at the point both
sections of the unit come together.
11. For outdoor units, the roof seam cover caps
must be installed. Do not seal seam-cover end
caps as this will prevent rainwater from draining
off roof.
6.3 Component Clearances
Because ClimateCraft, Inc. specializes in the
manufacture of custom products, it is difficult to
generalize about product clearances. However, certain
minimum clearances should be observed to facilitate
access to the unit and major components.
• Access Doors – The area around an access door
should be clear to allow the door to swing fully
open without obstruction.
• Coils & Major Components – In order to
allow for replacement of coils and other
major components, the area adjacent to the
component should be clear an equivalent of the
width of the component, plus an additional 5
feet to allow for equipment access.
Maintaining clearances around the air handling unit
required for local, state, and national codes is the
responsibility of the licensed installing contractor.
NOTICE
