Nailor Industries, Inc. reserves the right to change any information concerning product or specification without notice or obligation.
General
Receiving Inspection Checklist
Visually inspect unit for shipping damage before unwrapping
any packaging material. Report any damage immediately to the
delivering carrier.
After unpacking the unit, check it again for shipping damage. If any
shipping damage is found, report it immediately to the delivering
carrier.
Notify your local Nailor representative of damage and arrange for
repair or replacement.
Check that the unit is labeled as intended and deliver to appropriate
site location.
Store units in a clean, dry location.
Caution:
Do not use the inlet collar, damper shaft, airflow
sensor, electrical conduit, water coil extremities, drip pan,
or tubing as a handle to lift or move assembly. Damage to
the unit, unit accessories or controls may result.
Safety Precautions
a. All person(s) involved in installation process shall be qualified
according to all relevant local codes and standards.
b. Beware of other building utilities and electrical wiring during
installation process.
c. The unit installed shall be used only as intended. Any unintended
use shall therein result in immediate forfeiture of manufacturer
assumed warranty, responsibility and liability of product and
associated components. Contact your local Nailor representative
for questions.
d.
Warning:
Make sure all electrical power to the unit has
been disconnected and any capacitors fully discharged
before servicing. Failure to do so could result in injury or
death.
e. During brazing process, make sure to protect any surrounding
flammable materials, using barriers where applicable and always
have a fire extinguisher accessible.
Caution:
Any improper product handling, installation,
servicing, or operation resulting in personal injury
and property damage shall void any manufacturer
assumed legal responsibility.
Installation
Supporting the Assembly
Suspend the unit from the building structure in the horizontal plane
and ensure the unit is level to guarantee proper performance. Be
careful not to obstruct all the access panels with support channels or
straps. When requested, unit is supplied with field mounted hanger
brackets for use with hanger rod up to 3/8" (9.5) dia. Hanger brackets
or straps should be screwed to the top corner posts, unit casing
sides or alternatively onto the inlet and outlet ends of the unit if the
top corner posts are not accessible. Note that low profile unit do not
contain corner posts.
Caution:
Nailor 33SZ units are too heavy to suspend with
the ductwork and must be independently supported.
Nailor recommends attaching straps or screws into the 16 gauge
frame (corner posts) of the size 40 and 50 units when possible and
into the inlet, outlet or side panels of the size 30 unit.
Duct Connections
All ducts should be installed in accordance with SMACNA
guidelines. Slip each inlet duct over the inlet collar of the terminal.
Fasten and seal the connection by the method prescribed in the
job specification. The diameter of the inlet duct in inches must be
equal to the nominal size of the terminal inlet. The inlet collar of the
terminal is 1/8" (3) smaller than the nominal duct size to allow it to
fit inside the duct. Important: Do not insert ductwork inside the inlet
collar of the assembly. For optimum performance, 2 to 3 equivalent
diameters of straight duct should be installed prior to the inlet of the
unit. Rectangular discharge opening is designed for a flanged duct
connection. A clear area around the opening has been left for screw
penetration. Fasten and seal all connections by method prescribed
in the job specification.
Minimum Access
Make appropriate accommodations for access panel removal.
If unit is to be installed in
hard ceiling/wall application
, refer to
Nailor 33SZ submittals for specific dimensions before installing to
assure there is access to the unit and components after installation
is complete. Nailor 33SZ units have access panels on the top and
bottom. For low voltage control enclosure access, a minimum of
18" (457) is recommended. Specific control enclosure location is
indicated on product submittals. Low
voltage control enclosures have
removable covers that are attached with sheet metal screws. High
voltage controls enclosures have access panels that are equipped
with hinges. For clearances for full opening of hinged access doors,
refer to project specifications, submittal sheets and NEC.
Caution:
These recommendations do not preclude
NEC or local codes that may be in effect, which are the
responsibility of the installing contractor.
Installation and Operation Manual (IOM)
Fan Powered Chilled Water (DOAS) Terminal Unit
Model: 33SZ
9/18 IOM-DOAS
Page 3 of 8
Figure 1: Fan Powered Chilled Water Terminal Unit Support Using
Hanger Staps (Model 33SZ unit size 30 illustrated).
Figure 1: Fan Powered Chilled Water Terminal Unit Support Using
Hanger Staps Brackets and Rods (Model 33SZ unit size
40/50 illustrated).
PRIMARY
AIR VALVE
CONTROLS
ENCLOSURE
HINGED LINE
VOLTAGE
FAN
CONTROLS
ENCLOSURE
PRIMARY/DEDICATED
DISCHARGE
DUCT
DISCHARGE
DUCT
OUTDOOR AIR
PRIMARY/DEDICATED
OUTDOOR AIR
FAN
CONTROLS
ENCLOSURE
PRIMARY
CONTROLS
ENCLOSURE
