Daikin DP5HH2441 Series, Руководство по установке

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6
Plenum Application
A suitable plenum or square duct must be constructed. The
duct cross-sectional area should be determined by industry
duct sizing manuals or air duct calculators.
On ductwork exposed to outside air conditions of
temperature and humidity, use an insulation with a good
K factor, and a vapor barrier. Industry practices should be
followed. Balancing dampers are recommended for each
branch duct in the supply system. Ductwork should be
properly supported from the unit.
NOTE: Proper sealing of all duct work and air
handling compartments is extremely important to
overall unit efficiency.
Filters
Filters are not provided with unit, and must be supplied
and installed in the return duct system by the installer. A
field installed filter grille is recommended for easy and
convenient access to the filters for periodic inspection and
cleaning. Filters must have adequate face area for the
rated quantity of the unit. See air delivery tables (Figure 4)
for recommended filter size.
PIPING
Condensate Drain
The condensate drain connection of the evaporator is a
half coupling of ¾” N.P.T. A trap must be provided to have
Proper condensate drainage.
2" Minimum
3" Minimum
A Positive Liquid Seal
Is Required
Flexible
Tubing-Hose
Or Pipe
Drain
Connection
Unit
Figure 5
Install condensate drain trap as shown. Use ¾” drain
connection size or larger. Do not operate without trap. Unit
must be level or slightly inclined toward drain.
WIRING
CAUTION
To avoid property damage or personal injury due to fire,
use only copper conductors.
All wiring should be made in accordance with the National
Electrical Code. The local Power Company should
be consulted to determine the availability of sufficient
power to operate the unit. The voltage, frequency, and
phase at the power supply should be checked to make
sure it corresponds to the unit’s RATED VOLTAGE
REQUIREMENT.
Install a branch circuit fused disconnect near the unit, in
accordance with the N.E.C. or local codes. Wire sizes and
overcurrent protection should be determined from the unit
nameplate ampacity and in accordance with Table 4 (page
7) or the N.E.C. Under no circumstances should wiring be
sized smaller than is recommended by either of these two
sources.
Fuses smaller than that recommended on the wiring
diagrams could result in unnecessary fuse failure or
service calls. The use of protective devices of larger size
than indicated could result in extensive damage to the
equipment. The manufacturer bears no responsibility for
damage caused to equipment as result of the use of larger
than is recommended size protective devices.
All units have undergone a run test prior to packaging for
shipment. This equipment has been started at minimum
rated voltage and checked for satisfactory operation. Do
not attempt to operate this unit if the voltage is not within
the minimum and maximum voltages shown on nameplate.
All exterior wiring must be within approved weatherproof
conduit. The unit must be permanently grounded in
accordance with local codes, or in absence of local codes,
with N.E.C ANSI/ NFPA NO. 70-1984 or latest edition by
using ground lug in the control box.
Fuses or HACR type circuit breakers may be used
where codes permit.
CONTACTOR
R
W
G
G R W
FOR INTERNAL WIRING SEE WIRING LABEL ATTACHED TO UNIT
24 VOLT CONTROL WIRING
Figure 6
NOTE: Some single phase units are equipped with a
single pole contactor. Caution must be exercised
when servicing as only one leg of the power
supply is broken with the contactor.
To wire the unit, make the following high and low voltage
connections.