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Injected-Foam Insulated Panels
Skyline air handlers now are furnished with double-wall,
injected-foam insulated panels. Foam panels are stronger,
more rigid, and lighter than panels with fiberglass insulation.
The insulation R-value is improved to 13. However, foam
insulation can burn when exposed to flame or other ignition
sources and release toxic fumes. Take care in cutting and
sealing all field-cut openings in these panels.
Panel Cutting Procedure
1. Determine the number and location of holes required for
electrical conduit, piping, and control wiring as follows:
a. Check that adequate space is available inside the
unit for conduit or pipe routing.
b. Do not locate holes in a panel that provides access
to key maintenance components such as filters
and fan assemblies.
c. Do not locate where the conduit or piping blocks
airflow or obstructs hinged access doors.
2. Once a proper location is determined, drill a small pilot
hole completely through the panel. Then use a sharp
hole saw or a saber saw and cut from each side of the
panel.
3. Seal the double-wall panel on each side with an
industrial/commercial grade silicone sealant or duct seal
compound. It is extremely important to seal each panel
hole or penetration securely so it is airtight, watertight,
and so that there is no exposed insulation.
IM 777-18 • SKYLINE OUTDOOR AIR HANDLER
WARNING
Flame
and
smoke
cause equipment damage,
severe personal injury, or
death . Before operating unit,
seal all piping and wiring
holes on both inner and outer
panels
with
an
industrial
grade silicone sealant or duct
seal compound. Do not use
a cutting torch or expose
panel to fire. Panel damage
can occur .
Field Mounting Junction Boxes and
Other Components
For field mounting 4" × 4" or smaller junction boxes to the
standard panel exterior, use a minimum quantity of four, 3/16"
diameter pop rivets. Do not use self-tapping drill screws .
They will not tighten nor secure properly and panel
damage can occur .
If larger, heavier components require mounting on unit panels,
use through-bolts with flat washers through both outer and
inner panels. To maintain panel integrity, seal both ends with
an industrial/commercial grade silicone sealant or duct seal
can
compound.
The unit frame channel is another excellent location for
securing heavier components; self-tapping screws are not
acceptable. Ensure that the location permits the full operation
of all access doors and panels and does not interfere with
other vital components.
HEPA Holding Frame, Filter, and
Prefilter Installation
These instructions are for installing AAF HEPA filters (11-1/2"
depth) into AAF HEPA Holding Frames.
Please read the entire installation instructions before beginning
the installation process.
Install filters into the HEPA Holding Frames only after the
frames have been securely installed into existing ductwork or
housing. Frames should be bolted or pop riveted together into
the permanent structure through the pre-drilled holes around the
outside perimeter of the frames. Frames should be sufficiently
caulked and sealed to prevent any air bypass or leakage.
Required tools for filter installation:
• T-handle Hexkey, size 5/32"
Framing Components Required:
• AAF HEPA Holding Frames
— P/N 910111491 & 910111674
• Leg Extensions, 4 per frame (A)
— P/N 910111494
• Latches, 4 per frame
— P/N 910111493 (B) (without prefilters)
— P/N 910123164 (C) (with prefilters)
• Prefilter Holding Frames (when prefilters are ordered)
— P/N 910123166 & 910123168
• Prefilter Latches (when prefilters are ordered)
— P/N 111048304 & 111048305
10
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nsTallaTIon
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