Introduction; General Information; Receiving And Handling - Daikin Skyline OAH003GDAC Installation And Maintenance Manual

General Information

Sharp edges and coil surfaces are a potential injury hazard.
Avoid contact.
The system design and installation must follow accepted
industry practice as described in the ASHRAE Handbook, the
National Electric Code, and other applicable standards. Install
this equipment in accordance with regulations of authorities
having jurisdiction and all applicable codes.
Installation and maintenance must be performed by qualified
personnel familiar with applicable codes and regulations and
experienced with this type of equipment. Sheet metal parts,
self-tapping screws, fins, clips, and such items inherently have
sharp edges; the installer should exercise caution.

Receiving and Handling

Inspection
• Carefully check items against the bills of lading to verify
all crates and cartons have been received. Carefully
inspect all units for shipping damage. Report damage
immediately to the carrier and file a claim.
Nomenclature
Model
OAH = Custom modular air handler
OAC = Custom modular component
Nominal unit size
(cataloged size—nominal square foot of coil)
003, 004, 006, 008, 010, 012, 014, 017,
021, 025, 030, 035, 040, 050, 065, 080, 085, 090
Vintage of Daikin air handling unit
Unit type/coil position
B = Blow-through cooling coil location
D = Draw-through cooling coil location
H = Heating only
V = Vent only
M = Multizone
www.DaikinApplied.com
WARNING
OAH 003 G D A C
Packaging
• All shipping wrap material, including stretch and shrink
wrap, must be removed upon unit arrival. This wrapping is
for transit protection only. Units are not to be stored with
wrapping material left on, as white rust will develop if any
moisture is present.
• Field-installed components, such as vestibules or shipped
loose controls, will ship on separate skid(s).
• Hardware (screws, bolts, etc.) for assembling sections
are supplied in a bag attached to each section. NOTE: A
special #30 Torx bit is required for assembly.
Identification
• Every shipping section includes a nameplate identifying
the customer tagging information, unit serial number,
unit order number, and the shipping section position for
installation.
Handling
• Skyline air handler units are constructed of painted or
galvanized steel and are inspected thoroughly before
leaving the factory. Take care during installation to
prevent damage to units. Do not stand or walk on top of
units.
• Air handler bases are designed with the necessary
number of lifting points for safe installation. All lifting
locations must be used. See Rigging.
• Take special care when handling blower sections. All
fans are dynamically balanced before leaving the factory.
Rough handling can cause misalignment or a damaged
bearings or shaft. Carefully inspect fans and shaft before
unit installation to verify this has not happened.
Unit cross section
C = Standard unit cross section
M = Custom size cross section
Motor location
A = Motor along side of fan housing
C = Motor downstream of ECM fan
D = Motor downstream of belt-drive plenum fan
F = Motor on inline fan
G = Motor downstream of direct-drive plenum fan
H = Motor downstream of direct-drive plenum
fan in fan array
T = Motor behind twin fan housing
3 IM 777-18 • SKYLINE OUTDOOR AIR HANDLER
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