Maintenance And Cleaning; F Ield Wiring - Daikin FWN Manual De Instalación Y Operación

n The installation of the filter module is schematically shown in:
- figure 9: installation of filter intake modules on FWN with configuration
AA.
- figure 10: installation of filter intake modules on FWN with configuration
AB.
Use the self-tapping screws supplied with the kit.
A few rules to follow
n 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.
n When implementing a duct type system, it is advisable to place vibration
damping joints (field supply) between the channelling and the unit.
n If you wish to install an electrical resistance module (EDEH) as accesso-
ry, the delivery vibration damping joint should be heat resistant.
n The ducting, especially the delivery one, should be insulated with anti-
condensing material.
n Provide an inspection panel adjacent to the equipment for the maintenan-
ce and cleaning operations.
n Install the control panel on the wall. Choose a position that is easy to ac-
cess 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/con-
troller and this according to the correct wiring diagram delivered with every acces-
sory.
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 op-
posite the hydraulic attachments.
Figure 7 shows the FWN wiring diagram without control panel.
The unit is equipped with an inverter board to control the motor, that makes it pos-
sible to precisely set the maximum rotation speed of the motor (control signal
0-10 V).
Wiring parts table
(See figure 7)
L ................................. Fase
.............................. Ground
N ................................ Neutral
CN .............................. Connector
F ................................. Fuse (field supply)
IL ................................ Line switch (field supply)
0-10V ......................... Control signal
COM ........................... Common signal control
Installation and operation manual
3
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 FWN 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.
Cleaning the air filter
Cut voltage to the unit by turning the line switch to OFF.
For cleaning the air filter proceed as follows (see figure 6)
n Access the equipment through the inspection panel and remove the air filter
as shown in figure 8 by unscrewing the fixing knobs.
n Otherwise, if the filter is inside the intake grid, remove the grid and carry out
the operations described below.
(See figure 8)
1 Intake module with filter
2
Air filter, secured to the intake module by means of screws, it is pulled
out like a drawer.
n Wash the filter with lukewarm water or, for dry powders, with compressed
air.
n Reassemble the filter after having it dried up.
Cleaning the heat exchanger
It is advisable to check the condition of the heat exchanger before the start of the
summer season. Also check if the fins are not clogged by impurities.
To access the heat exchanger, remove the delivery panel and the condensate tank.
Upon having accessed the heat exchanger, clean with compressed air or low pres-
sure steam, without damaging the fins of the heat exchanger.
Before operating it in the summer, check the condensate discharges regularly.
NOTE
Adequate and regular maintenance and cleaning means energy
conservation and cost saving.
FWN
Ducted fan units
4PW17549-3N