Aermec FCXI 20 user guide manual

USE AND INSTALLATION MANUAL
MANUEL D’UTILISATION ET D’INSTALLATION

FAN COIL WITH INVERTER
VENTILO-CONVECTEUR AVEC INVERTER

FCXI US

FCXI 20 / 220 US
FCXI 30 / 220 US
FCXI 40 / 220 US
FCXI 50 / 220 US
FCXI 80 / 220 US

FCXI 24 / 220 US
FCXI 34 / 220 US
FCXI 44 / 220 US
FCXI 54 / 220 US
FCXI 84 / 220 US

IFCXIUSLJ 1203 - 5383620_00

TABLE OF CONTENTS • TABLE DES MATIÈRES

>25Kg

English

Transport • Safety symbols 3

Description of the unit

Important information and maintenance 5

Operating limits 6
Main components • Description of components 7
Installation information • Alarm codes 8

Unit installation • Water connections • Condensate discharge connections 9
Electrical connections • Coil rotation 10
Dimensions 18
Wiring diagrams 23
Trouble shooting 24
Inverter card factory settings 25

Français

Transport • Symboles de sécurité 3

Description • Emballage • Emploi
Informations importantes et entretien 12
Limites de fonctionnement 13
Composants principaux • Description des composants 14

Informations pour l'installation • Encodage des alarmes 15

Installation de l'unité • Raccords hydrauliques • Raccords d'évacuation des condensats 16
Raccordements électriques • Rotation de la batterie 17
Dimensions 18

Schemas electriques 23
Solution des problemes 24
Réglages en usine de la platine inverter 25

• Packaging • Use 4

11

CARRIAGE • TRANSPORT

Do NOT wet

CRAINT l’humidité

Stacking: control the packing to know the
number of machines that can

Empilement: vérifier sur l’emballage pour connaître
le nombre d’appareils pouvant être empilés

Do NOT leave loose packages during transport

ATTACHER les emballages pendant le transport

Fragile, handle with care

Fragile, manipuler avec soin

be stacked

SAFETY SYMBOL • SIMBOLES DE SECURITE

Danger: Danger: Danger!!!

Power supply Movings parts

Danger: Danger: Danger!!!

Tension Organes en mouvement

Do NOT step

NE PAS marcher sur cet emballage

DO NOT handle the machine alone if
its weight is over 55lb / 25Kg

NE PAS transporter tout seul l’appareil
si son poids dépasse 55lb / 25Kg

Arrow: high

Flèche: haut

IFCXIUSLJ 1203 - 5383620_00

3

Congratulations on your purchase of this Aermec FCXI fan coil.

Made with materials of superior quality in strict compliance with safety regulations, "FCXI" is

easy to use and will have a long life.

Thanks to Aermec's FCXI range of inverter fan coils, brushless technology can now make

inroads in the field of chilled water air conditioning, bringing notable energy savings along
with the precise control of both air temperature and humidity in the air-conditioned rooms.

REMARKS

Store the manuals in a dry location to avoid deterioration, as
they must be kept for at least 10 years for any future reference.

All the information in this manual must be carefully read and
understood. Pay particular attention to the operating stan­dards with “DANGER” or “WARNING” signals as failure to
comply with them can cause damage to the machine and/or
persons or objects.

English

If any malfunctions are not included in this manual, contact
the local After-sales Service immediately.

The apparatus must be installed in such a way that mainten­ance and/or repair operations are possible.

The apparatus's warranty does not in any case cover costs due
to automatic ladders, scaffolding or other lifting systems neces­sary for carrying out repairs under guarantee.
AERMEC S.p.A. declines all responsibility for any damage
whatsoever caused by improper use of the machine, and a par­tial or superficial acquaintance with the information contained
in this manual.
The number of pages in this manual is : 28.

DESCRIPTION OF THE UNIT

MACHINE PURPOSE

The fan coil is a room air treatment terminal unit for both winter and summer operation.

AVAILABLE SIZES

The FCXI_US fan coils are available in:

5 sizes 220V 60Hz
with 3-row coil
FCXI 20 / 220 US
FCXI 30 / 220 US
FCXI 40 / 220 US
FCXI 50 / 220 US
FCXI 80 / 220 US

FCXI_US: without control panel and with Inverter motor, 3-rows or 4-rows heat exchanger, universal cabinet for vertical fl oor-

standing installation or wall-mounting, varnished with anti-corrosion polyester powder, colour RAL 9002. The air delivery and
suction grilles are made using plastic material in colour RAL 7044. Requires external control panel.

5 sizes 220V 60Hz
with 4-row coil
FCXI 24 / 220 US
FCXI 34 / 220 US
FCXI 44 / 220 US
FCXI 54 / 220 US
FCXI 84 / 220 US

PACKAGING

The fan coils are shipped in standard package which consists of expanded polystyrene foam and cardboard shells.

USE

Consult control panel manual for use instructions.

4

IFCXIUSLJ 1203 - 5383620_00

IMPORTANT INFORMATION AND MAINTENANCE

WARNING: the fan coil is connected

to power supply and water circuit.
Operations performed by persons
without the required technical skills can
lead to personal injury to the operator
or damage to the unit and surrounding
objects.

POWER THE FAN COIL ONLY WITH

220V, SINGLE-PHASE VOLTAGE

Any other type of power supply could

permanently damage the fan coil.

DO NOT USE THE FAN COIL

IMPROPERLY

Do not use the fan coil for animal

husbandry applications (e.g. incubation).

AIR THE ROOM

Periodically air the room in which the

fan coil has been installed. This is
particularly important if the room is
occupied by many people, or if gas
appliances or sources of odours are
present.

ADJUST TEMPERATURE ADEQUATELY

The room temperature should be adjusted

in order to provide maximum comfort to
the people in the room, especially if they
are elderly, children or sick people; avoid
differences over 44.6°F /7°C between the
outdoor temperature and the temperature
inside the room in summer.

In summer, a temperature that is too low

causes higher electrical consumption.

CORRECTLY ADJUST THE AIR JET

Air coming out from the fan coil must not

reach people directly; in fact, even if the
air is warmer than the room temperature,
it could cause a cold sensation and result
in discomfort.

DO NOT USE EXCESSIVELY HOT WATER

To clean the fan coil use soft cloths

or sponges dipped in water with a
maximum temperature of 104°F / 40°C.
Do not use chemical products or solvents
for any part of the fan coil. Do not spray
water on the outer or inner surfaces
of the fan coil (this might cause short
circuits).

CLEAN THE FILTER PERIODICALLY

Cleaning the filter frequently guarantees

enhanced operating efficiency.

Check whether the filter is very dirty: in

this case, clean it more often.

Clean frequently; remove the accumulated

dust with a vacuum cleaner.

Once the filter is clean, refit it on the fan

coil following the removal instructions
but in reverse order.

SUPPLEMENTARY CLEANING

The fact that the blades of examinable

shrouds can be removed (operation
done only by adequately skilled
technicians) ensures a thorough cleaning
of the internal components, which is
particularly important when installing
the unit in crowded areas or venues
requiring high hygiene standards.

DURING OPERATION

Always leave the filter fitted on the fan

coil during operation (otherwise dust in
the air could soil the coil surface area).

WHAT IS NORMAL

In cooling mode, water vapour may be

present in the air delivery of the fan coil.

In the heating operation, a slight hiss might

be heard close to the fan coil. Sometimes
the fan coil might give off unpleasant
smells due to the accumulation of
substances present in the air of the room
(clean the filter more often, especially
if the room is not ventilated regularly).

While the unit is functioning, there could

be noises and creaks inside the device
due to the various thermal expansions
of the elements (plastic and metal), but
this does not indicate any malfunction
and does not damage the unit unless
the maximum input water temperature
is exceeded.

MALFUNCTIONING
In case of malfunction, cut off power

to the unit, then energise it again and
restart the device.

WARNING! Do not attempt to repair the

unit alone, this is extremely dangerous!.

If the problem occurs again, call the local

Aftersales Service immediately.

This section is reserved for the After

Sales service only. There are 2 LEDs on
the Inverter card (Alarm / Power) that
indicate the unit's operating status. The
table for the decoding of messages is
found in Chapter Installation.

DO NOT TUG THE ELECTRIC CABLE

It is very dangerous to pull, tread on or

crush the electric power cable, or fix it
with nails or drawing pins.

A damaged power cable can cause short

circuits and injure people.

DO NOT OBSTRUCT THE AIR OUTLETS

BY PLACING OBJECTS INTO THEM

Do not put anything in the air outlet slots.
This could injure people and damage the

fan.

WARNING

Avoid that the device is used by children

or incompetent persons without
appropriate supervision; also note that
the unit should not be used by children
as a game.

English

°C= (°F-32)/1.8

°F=(°Cx1.8)+32

1mm = 0.03937 inch

1inch = 25.4 mm

IFCXIUSLJ 1203 - 5383620_00

5

OPERATING LIMITS

FCXI

Maximum water inlet temperature 176°F / 80°C
Maximum recommended water inlet temperature 149°F / 65°C
Maximum operating pressure 115psi / 8bar /
Room temperature limits (Ta) 32°F < Ta < 113°F / 0°C < Ta < 45°C
Relative humidity limits in the room (R.H.) U.R. < 85%
Power supply 220V ( ±10% ) ~ 60Hz

Performance values refer to the following conditions:

- at the maximum motor speed;

Water temperature

In order to prevent air stratification in

English

the room, and therefore to achieve
improved mixing, it is advisable not

Minimum average water temperature

If the fan coil is working in continuous

cooling mode in an environment
where the relative humidity is high,
condensate might form on the air
delivery and on the outside of the
device. This condensate might be
deposited on any objects underneath
and on the floor.

to supply the fan coil with water at a
temperature over 149°F / 65°C.

The use of water at high temperatures could

cause squeaking due to the different

To avoid condensate on the external

structure of the device while the fan is
functioning, the average temperature
of the water must not be lower than
the limits shown in the table below,
that depend on the thermo-hygrometric
conditions of the air in the room.

The limits mentioned above refer to

operation while the fan is set to its

20 /220US 30 /220US 40 /220US 50 /220US 80 /220US
24 /220US 34 /220US 44 /220US 54 /220US 80 /220US

- the total input power is determined by adding the input power
for the unit and the input power for the accessories connected
and declared in the corresponding manuals.

thermal expansions of the elements
(plastic and metal), this does not however
cause damage to the unit if the maximum
operating temperature is not exceeded.

minimum speed level.

In the event of prolonged fan inactivity

and with cold water passing through
the coil, condensate may form on the
external case of the unit. As a result,

we recommend including the 3-way
valve accessory.

MINIMUM AVERAGE WATER TEMPERATURE

[°F/°C]

59 / 15 37.4/3 37.4/3 37.4/3 37.4/3 37.4/3 37.4/3

Wet bulb ambient

air temperature

Water flow limits for 3-row coil

FCXI 20 /220US 30 /220US 40 /220US 50 /220US 80 /220US

Minimum water flow

Maximum water flow

Water flow limits for 1-row coil

FCXI 20 /220US 30 /220US 40 /220US 50 /220US 80 /220US

Minimum water flow

Maximum water flow

62.6 / 17 37.4/3 37.4/3 37.4/3 37.4/3 37.4/3 37.4/3

66.2 / 19 37.4/3 37.4/3 37.4/3 37.4/3 37.4/3 37.4/3

69.8/21 48.2/6 41/5 39.2/4 37.4/3 37.4/3 37.4/3

73.4/23 - 46.4/8 44.6/7 48.2/6 41/5 41/5

l/h 100 100 150 150 300
gpm 0.44 0.44 0.66 0.66 1.32
l/h 750 750 1100 1100 2200
gpm 3.3 3.3 4.84 4.84 9.68

l/h 50 50 50 50 100
gpm 0.22 0.22 0.22 0.22 0.44
l/h 400 400 400 400 900
gpm 1.76 1.76 1.76 1.76 3.96

Dry bulb ambient air temperature

70/21 73/23 77/25 80/27 84/29 88/31

Water flow limits for 4-row coil

FCXI 24 /220US 34 /220US 44 /220US 54 /220US 84 /220US

Minimum water flow

Maximum water flow

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IFCXIUSLJ 1203 - 5383620_00

l/h 150 150 150 150 300
gpm 0.66 0.66 0.66 0.66 1.32
l/h 1100 1100 1100 1100 2200
gpm 4.84 4.84 4.84 4.84 9.68

MAIN COMPONENTS

1 Air delivery with fins (RAL7044)
2 Load-bearing structure
3 Heat exchange coil
4 Air vents on the coil
5 Plumbing connections
6 Bracket for mounting

7 Condensate discharge
8 Tray
9 Fan
10 Control Inverter device
11 Electric motor
12 Lower closure (RAL7044)

13 Intake grille (RAL7044)
14 Air filter (suction)
15 Electric box (electrical wiring)
16 Cabinet (RAL9002)
17 Covering cabinet (RAL9002)

FCXI 40/220 US

5

4

6

3

4

7

6

17

1

2

16

3

15

English

14

13

12

DESCRIPTION

SYSTEM TYPES

The fan coils are designed for systems

with 2 and 4 pipes, in the versions:

- 3-Rows: without valve;

- 3-Rows: with valve;

- 3-Rows: with 1-Row hot water coil (BV)
and 2 valves;

- 4-Rows: without valve;

- 4-Rows: with valve.

HEAT EXCHANGE COIL

Coil with copper pipe and aluminium

fins blocked by means of the mechani­cal expansion of the pipes. The collec­tors are fitted with female connections
and air vents in the upper part of the

coil.

FILTERING SECTION

Filter in filtering class G2, self-extin-

guishing B1 (DIN 4102). Easily remov­able and made from regenerable mate­rials.

May be cleaned by washing.

ELECTRIC FAN UNIT

This consists of double suction centrif-

ugal fans with lengthways blades to
obtain a high air flow with a low num­ber of revs. The fans are directly cou­pled with the shaft of the "brushless"

8 9

electric motor.

The "brushless" electric motor is cush-

ioned with elastic supports.

The "brushless" electric motor is the

result of combining the most sophis­ticated technologies from the fields of
mechanics and electronics.

The "brushless" electric motor has no

sliding contacts between the rotor and
the stator. With the special inverter
device, it is possible to control the
speed and torque of the rotor continu­ously, just by means of the stator cur­rents.

Compared with the traditional alternate

current motors, the "brushless" electric
motor offers huge advantages:

- Reduced wear and tear

- The possibility to regulate the rotation
speed in a precise, continuous manner
(0-100%)

- Higher energy yields

- Longer life and greater reliability

LOAD-BEARING STRUCTURE

Made of galvanised sheet iron of a suit-

able thickness. There are holes on the
back for fixing the device to the wall.
The fan unit is closed at the front with a

10 11

IFCXIUSLJ 1203 - 5383620_00

metal panel. Every device is equipped
with condensate collection trays (for
both vertical and horizontal installa­tion).

CONDENSATE DRAIN

Every device is equipped with conden-

sate collection trays, with a connection
for draining the condensate produced
by the unit in cooling mode.

WATER CONNECTIONS

The connections, located on the left

hand side, are female. The coil may
also be rotated.

CABINET
Casing in RAL9002

The casing is made of galvanised steel,

varnished with
guarantee high resistance to rust and
corrosion.

CONTROL PANEL

Use a control panel with thermostat and

ventilation speed control, with 0-10V
outputs.

polyester powders to

7