Installation and operation manual
1
FWD
Ducted fan coil units
4PW17549-1A
BEFORE INSTALLATION
Installation and maintenance should be carried out by technical
personnel qualified for this type of machine, in compliance with
current safety regulations.
When receiving the unit please check its state, verifying if any
damage occurred during transport.
Refer to the relevant technical sheets for installation and use of
possible accessories.
Identify model and version of the unit from the indications stated on
the carton package.
USE AND OPERATING LIMITS
Daikin shall not be held liable
- if the unit has been installed by non-qualified personnel,
- if the unit has been used improperly,
- if the unit has been used under conditions that are not permitted,
- if maintenance operations specified in this manual have not been
carried out,
- if non original spare parts have been used.
Keep the unit in its packaging until it is ready to be installed, to
prevent dust getting inside.
Air sucked by the unit must always be filtered. Always use the
supplied air filter.
If the unit is not used during winter, drain the water from the system to
prevent damage caused by the formation of ice. If antifreeze solutions
are used, check the freezing point.
Do not change the internal wiring or other parts of the unit.
Operating limits are shown here below; all other uses are considered
improper:
■ thermal carrier: water/glycol
■ water temperature: 5°C~95°C
■ maximum operating pressure: 10 bar
■ air temperature: –20°C~43°C
■ voltage tolerance: ±10%
Selection of location:
■ do not install the unit in rooms where inflammable gases are
present
■ do not let water spray directly on the unit;
■ install the unit on ceilings or walls that bear its weight. Leave
enough space all around for proper operation and maintenance
of the unit, taking into account all installed optional accessories.
■ never place the heating unit immediately under an electric plug-
socket.
DESCRIPTION OF THE EQUIPMENT
The FWD range of air conditioning and hot-air heating units has been
implemented for conditioning rooms that require the installation of
ducted units.
Main components
■ Load bearing structure made of galvanized steel sheet of
suitable thickness, duly insulated with noise-proof/anti-
condensing material, self-extinguishing in class 1. Complete
with inspection panels.
■ Fan unit with single or dual fan wheel, dual intake centrifugal
type, with statically and dynamically balanced impellers, coupled
directly to the 3-speed electric motor, equipped with
permanently fit condenser and thermal safety device
■ Terminal strip.
■ Heat exchanger: high efficiency, made of copper tube and
aluminium fins secured to the tubes by mechanical expansion.
They are fit with brass manifolds and contain air valves. The heat
exchanger, normally supplied with left-hand attachments, may
be turned 180°.
■ System for collecting and discharging condensate, setup
either for ceiling or wall mounting. All FWD range models may be
installed either in a horizontal or in a vertical position.
■ Air intake module with air filter
■ Air intake module
Made of galvanised steel sheet. These modules permit to filter
the air sucked up by the unit and also to connect the unit to the
intake channelling.
■ Air filter
Made of acrylic material, self-extinguishing in class 1, with
filtering class EU 2.
The filter may be inserted or removed and is fixed by means of 2
knobs with M4 threaded stems.
The filtering material may be washed and regenerated to
maintain the rated filtering efficiency with limited charge leaks.
■ The accessory kit comprises
- Load-bearing structure made of galvanised steel sheet
- Removable cassette-type filter (to be pulled out like a drawer)
- Self-tapping fixing screws
Example for installation
See figure 1.
FWD
Ducted fan coil units
Installation and
operation manual
Read this manual attentively before starting up the unit. Do
not throw it away. Keep it in your files for future reference.
Improper installation or attachment of equipment or
accessories could result in electric chock, short-circuit,
leaks, fire or other damage to the equipment. Be sure only
to use accessories made by Daikin which are specifically
designed for the use with the equipment and have them
installed by a professional.
If unsure of installation procedures or use, always contact
your Daikin dealer for advice and information.
1 FWD unit
2 Intake module with air filter
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