10
English
CRITERIA OF CHOICE
The versions with high cabinet (A, AS,
ACB, ACT and APC) have intake from
below and can be used for vertical wall-
hung or floor installation using the rele-
vant skirting (accessory ZX). The acces-
sory SE (external air damper) where
requested, also allows, to change the
environment air.
The versions with universal cabinet (U
and UE) have front intake and can be
vertically wall-hung or installed hori-
zontally on the ceiling.
The suspended versions (P, PPC, PO and
PE), without cover cabinets and intake
from below, are suitable for vertical or
horizontal installation.
In the case of ducted installations where
the loss of load of the channel is rele-
vant, the PO version (with multi-speed
enhanced motor) allows to obtain the
static pressure necessary to guarantee a
correct air flow rate.
The PO version is available with coils
with 3 and 4 rows.
The AS, U, UE versions require coupling
with a control panel to be applied insi-
de or outside, consult the features and
the compatibility of the control panels
supplied as accessories.
The P, PE and PO require coupling with
a control panel to be applied outside,
consult the features and the compati-
bility of the control panels supplied as
accessories.
The PPC version must be coupled to
panel PXA E.
The other versions of fan coil are sup-
plied with incorporated control panel.
Some control panels can control a net-
work of fan coils if they are combined
with the SIT3 and SIT5 interface board
supplied as an accessory.
In the versions without control
panels, the AERMEC fan coils can all
be coupled to the centralised HSH
AERDOMUS control system with wired
or wireless connection.
The main technical data of the FCX are
summarised in the tables.
The sensitive and total cooling capa-
city at maximum speed depending on
the temperature of the inlet water, its
heat drop and the dry and wet bulb
temperatures of the air respectively for
sensitive capacity and total capacity for
the versions with coils with 3 rows are
stated in the table. The efficiency at ave-
rage and minimum speed is obtained by
multiplying the table values by the cor-
rective factors indicate. For the versions
with 4 rows, they are obtained by multi-
plying the table values by the corrective
factors indicated for every speed.
The water side pressure drop for the
coils with 3, 1 and 4 rows is respective-
ly stated in the graphics.
The correction factors in functioning
with glycoled water in cooling mode
and in heating mode are stated in the
graphics per percentages of glycol of
10%, 20% and 35%.
The heating capacity of the coils with 3,
4 and 1 row (accessory BV) depending
on the water flow rate and the tempe-
rature difference between inlet water
and inlet air is stated in a graphical
form and is referred at maximum speed.
Performance at average and minimum
speed is obtained by multiplying the
values obtained from the graphics at
maximum speed by the indicated cor-
rective factors.
The sensitive and total cooling capaci-
ties of the direct expansion coils (FCX
PE) depending on the evaporation tem-
perature and the dry and wet bulb tem-
peratures of the air entering are stated in
the graphical form respectively for total
and sensitive capacity and are stated at
maximum speed. Performance at ave-
rage and minimum speed is obtained
by multiplying the values obtained from
the graphics at maximum speed by the
indicated corrective factors.
For the ducted, suspended versions
(P-PE-PO) the performance stated above
must be intended as referring to air flow
rates equal to those of corresponding
models of other versions (A-U) at maxi-
mum speed (nominal flow rate).
The head of the suspended versions,
depending on the air flow rate and fan
speed, are stated in table form. The cur-
ves are indicated for every speed.
For dimensioning of the ducted, suspen-
ded versions, it is recommended to pro-
ceed as follows: select the size which,
in nominal flow rate conditions, have
immediate power that is higher than
that requested; trace the curve of the
channel pressure drop on the flow rate-
static pressure diagram relative to the
machine in question, thus identify the
functioning points of the machine at
the different speeds. On the basis of the
flow rate values corresponding to the
above-mentioned points, the corrective
factors are finally obtained that allow to
calculate the power yielded in real air
flow conditions. The above-mentioned
procedure allows, in the case of multi-
speed versions, to appropriately choose
the speed to be set.
The sound power and sound pressu-
re level of the fan coils at the various
speeds is stated in separate tables for
the versions with 3 rows and versions
with 4 rows. For ducted, suspended ver-
sions, the sound power level is expres-
sed depending on the air flow rate and
static pressure and is represented using
graphics.
A wide range of accessories is avai-
lable for FCX series fan coils, someti-
mes some of them cannot be used at
the same time. The compatibility of the
accessories with the selected fan coil
must be checked. The manual contains
the description, drawing and compatibi-
lity of each accessory.
The information regarding installation
is inserted in the manual supplied with
every fan coil and every accessory. This
manual is limited to general information
in order to perform correct installation.
There are also drawings with dimen-
sions of the fan coils and wiring dia-
grams with connections to the control
panels.
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