IM 1102 • PARALLEL TERMINAL BOX
6
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Connecting Ductwork
Slip each inlet duct over the inlet collar of the terminal. Fasten
and seal the connection by the method prescribed by the job
specification. The diameter of the inlet duct “D” in inches must
be equal to the listed inlet size of the terminal; e.g. a duct that
actually measures 8 inches must be fitted to a terminal with
a size 8 inlet. The inlet collar of the terminal is made 1/8 inch
smaller than listed size in order to fit inside the duct.
NOTE: Do not insert ductwork inside the inlet collar
of the assembly .
Inlet duct should be installed in
accordance with SMACNA guidelines. If a single
point electronic velocity sensor is installed, it is
recommended that the installer provide three to five
diameters of straight duct at the terminal inlet.
The outlet end of the fan powered terminal is designed for
use with flanged ductwork (slip and drive duct connections
optional). A rectangular duct the size listed in the catalog for
the fan powered case size should be attached. Ductwork
should be fastened and sealed per the job specifications.
Minimum Clearance for Access
Fan Powered Air Terminals require sufficient clearance to
allow servicing of the motor, blower, actuator, controls and
single point electric power hook-up. A minimum of 3 inches
of vertical clearance is required below the bottom of the
unit and sufficient horizontal clearance to the side to allow
the bottom access panels to clear the bottom of the fan
powered air terminal unit. Horizontal clearance requirements
are dependent upon access panel dimensions which are
indicated on the appropriate submittals. For control panel
enclosure access a minimum of 18” is recommended.
Do
not block access to control panel enclosure .
See the
appropriate submittal for control panel location.
NOTE:
These clearance recommendations are not meant to
preclude NEC requirements or local building codes
that may be applicable, which are the responsibility of
the installing contractor.
Field Electrical Wiring
WARNING
Electric shock hazard . Can cause personal injury or
equipment damage .
This equipment must be properly grounded. Connections and
service to the MicroTech
®
III Chiller Unit Controller must be
performed only by personnel knowledgeable in the operation
of the equipment being controlled.
•
All field wiring must comply with the local codes and with
the National Electrical Code (ANSI/NFPA 70-2002).
•
When applicable, electrical, control and piping diagrams
are shown on labels attached to the exterior of the fan
powered terminal, or to the inside cover of the control
• Use copper conductors only!
• All fan powered air terminal units are factory wired for
a single point electrical connection to the fan and the
optional electric heater.
• All electric heaters if provided by Daikin are balanced
by kW per stage. The installing electrician should rotate
these heater stages by phase in order to help balance the
building electric load.
• All fan powered air terminal units must be properly
grounded per NEC 424-14 and 250.
• Always check product label for voltage and current data
to determine the proper wire size and current protection.
• The control cabinet contains live electrical parts!
Contacting these parts with the power applied may cause
serious injury or death. The control cover must be closed
prior to applying electric power to the unit.
• Disconnect switches are optional equipment. Caution:
Provide a safety disconnect per NEC 424-19, 20 & 21.
•
Unless ordered with electric heaters, motor fusing is
optional. Caution: If multiple fan powered units are
connected to one branch circuit breaker, factory motor
fusing is required.
• These recommendations are not meant to preclude
NEC requirements or local building codes that may be
applicable, which are the responsibility of the installing
contractor.
Fan Powered Air Terminal Units with
Electric Heat
• Always inspect the electric coils for damage prior to
installing the single duct unit.
• See above wiring instructions.
Fan Powered Air Terminal Units with Hot
Water Coils
• Always inspect the hot water coils for damage prior to
installing the single duct unit.
•
CAUTION: The copper tubing should not be used as
lift points .
•
The hot water coil casing is field insulated.
• The hot water coils do not have a drip pan and are not
suitable for use as cooling coils.
