Field Wiring; Maintenance And Cleaning - Daikin FWD Series Installation And Operation Manual

■
The installation of the filter module is schematically shown in:
- figure 9: installation of filter intake modules on FWD with
configuration AA.
- figure 10: installation of filter intake modules on FWD with
configuration AB.
Use the self-tapping screws supplied with the kit.
A few rules to follow
■ Purge the air from the heat exchanger, with pumps stopped,
by means of the air valves located adjacent to the
attachments of the heat exchanger itself.
■ When implementing a duct type system, it is advisable to
place vibration damping joints (field supply) between the
channelling and the unit.
■ If you wish to install an electrical resistance module (EDEH)
as accessory, the delivery vibration damping joint should be
heat resistant.
■ The ducting, especially the delivery one, should be insulated
with anticondensing material.
■ Provide an inspection panel adjacent to the equipment for the
maintenance and cleaning operations.
■ Install the control panel on the wall. Choose a position that is
easy to access for the setting of the functions and for
detecting of the temperature. Try to avoid positions that are
directly exposed to sun rays, or positions subject to direct hot
or cold air currents. Do not place obstacles in the way that
would prevent the correct reading of the temperature.
F
IELD WIRING
All field wiring and components must be installed by a
licensed electrician and must comply with relevant local
and national regulations.
Carry out the electrical wiring after having turned the power off. For
options, refer to the appropriate manual.
Check that the power supply corresponds to the nominal power
supply stated on the unit nameplate.
Each unit requires a switch (IL) on the power supply with a distance
of at least 3 mm between the opening contacts and a suitable safety
fuse (F).
Power consumption is shown on the data plate fixed to the unit.
Make sure to carefully execute the wiring in function of the
combination unit/controller and this according to the correct wiring
diagram delivered with every accessory.
In order to make the electrical connections you must remove the
lower closing panel (see figure 6) to access the terminal strip.
The power cables (power supply and control) must be routed to the
terminal strip through the membrane passage that is on the side
panel of the unit on the side opposite the hydraulic attachments.
Figure 7 shows the FWD wiring diagram without control panel.
The motors of the units run at 3 speeds.
The common wire of the motor is the white one (WH).
If the common wire is not connected correctly, the motor
would be damaged irreparably.
Installation and operation manual
3
Wiring parts table
(See figure 7)
BK...........................Black = maximum speed
BU or GY ................Blue or Gray = medium speed
GNYE .....................Green-Yellow = earth
RD ..........................Red = minimum speed
WH .........................White = common wire

- - - -........................Field wiring

CN ..........................Connector
F .............................Fuse (field supply)
IL ............................Line switch (field supply)
M ............................Motor
➀
............................Connections to controller
T
EST RUN
Check that the equipment has been installed so that it guarantees the
required slant.
Check that the condensate discharge is not clogged (by rubble
deposits, etc.).
Check the seal of the hydraulic connections.
Check that the electrical wiring is perfectly tight (perform this check
with voltage OFF).
Be sure that the air purge of the heat exchanger has been carried out
correctly.
Turn on the power supply and check the unit running.
U
SE
To use the unit, refer to the instructions in the installation and
operation manual of the controller. Dedicated controllers are available
as accessory.
M
AINTENANCE AND CLEANING
For safety reasons before carrying out any maintenance or cleaning
operation, turn off the unit and cut the voltage by turning the line
switch to OFF.
Maintenance
The maintenance operations for the FWD air conditioner and hot-air
heating units are limited to the periodic cleaning of the air filter and
the heat exchanger, and the checking of the working efficiency of the
condensate discharge.
Only skilled personnel may perform the maintenance.
Pay utmost attention during the maintenance operations: accidentally
coming into contact with some of the metallic parts might cause
injuries, therefore use safety work gloves.
Every time the units are started after a long idle period, make sure
that air is NOT present in the heat exchanger.
The motor is maintenance-free since it is equipped with self-
lubricating bearings.
FWD
Ducted fan coil units
4PW17549-1A