6
GENERAL DESCRIPTION
1
1.1 - TECHNICAL /
FEATURES
-
MODULEX is a compact, gas fired,
Low NO
x
, condensing boiler, made
up by one sectional boiler body (so
called
heat module), set to operate
separately or in cascade.
This heat module consists of two or
more thermal elements (from 4 to 7),
which cannot be separated from
each other, being under the same
protecting casing. These thermal ele-
ments are connected to a single
smoke exhaust manifold and are
controlled by a single microproces-
sor which manages completely the
temperatures from the point of view,
both operational and safety.
-
If, for instance, one of the thermal
elements whose the boiler is com-
posed, goes out of order, the other
thermal elements continue to sup-
ply their output. It is nearly impossi-
ble the boiler go completely out of
order.
-
MODULEX has been examined ac-
cording the following European di-
rectives:
-
(GAD) Gas Appliances Directive
No. 90/396 CEE
-
(BED) Boiler Efficiency Directive
No. 92/42 CEE
by CERTIGAZ, under the No.
1312BP4012, for type B23 operation,
i.e. the boiler can be connected to a
traditional natural draught chimney,
and for operation in category I
2H
(G20
–20 mbar).
It also conforms to the following Eu-
ropean directives:
-
EMC (Electro Magnetic Compatibi-
lity) Directive No. 89/336 CEE
-
LVD (Low Voltage Directive)
No. 73/23 CEE
-
Machines Directive
No. 89/392 CEE
-
The boiler body, made by sections
of cast aluminium/magnesium/sili-
cium alloy, is conceived to recover
the sensible and the latent heat of
the combustion gases, thus al-
lowing to reach an efficiency of
109% on the N.C.V.
-
Each thermal element, composed of
a combustion chamber with burner,
modulating fan with control pressu-
re switch, gas valve, ignition devi-
ce, flame control, NTC sensor for lo-
cal temperature control and safety
thermostat, can deliver an output
between a maximum of 90 kW and a
minimum of 22 kW.
-
Each single boiler is equipped with
NTC sensors for global temperatu-
re control on the flow and return ma-
nifolds.
-
Total premix modulating bur ner
equipped with metallic sponge ra-
diation burner.
Premix in the pre-combustion cham-
ber. Automatic no return diaphragm
for separation from combustion
chamber.
-
Combustion air suction/feeding sy-
stem from the boiler house
-
Possible cascade installation of 2 or
more MODULEX
-
Heating Operation: setting of instan-
taneous output by a main micropro-
cessor, with a comparison parame-
ters pre-setting between the reque-
sted temperature (or calculated by
the outer compensator) and the glo-
bal flow temperature.
-
Logic of operation:
A) Output sharing on as many mo-
dules as possible at min. load (down
to 22 kW) for the max. efficiency.
B) Automatic operation hour split-
ting-up system for each module to
guarantee the best homogeneous
use.
C) DHW production by a priority sen-
sor which, thanks to the dedicated
electronic board, drives a special
loading pump or a 3-way diverting
valve for the preparation of a stora-
ge tank with the possibility of pre-
setting the D.H.W. circuit output, up
to maximum 360 kW.
D) Output check of each module for
any calibration and/or assistance by
secret access code.
-
Control panel with alphanumeric di-
splay, programming keys, reset and
hydrometer.
-
Displays: global flow/return tempera-
ture, DHW temperature, external tem-
perature.
-
Adjustments: flow temperature, fan
speed, max/min. output percentage.
-
Access to all testing/programming
parameters of each module: operation
test, operation time, boiler anti-frost
protection from 7°C, pump’s anti-
blocking system.
-
Integral easily removable panel set
(painted steel panels).
-
Condensate collecting tank equip-
ped with drain siphon and stain-
less steel smoke chamber.
-
Built-in air vent.
-
Weights and dimensions are limi-
ted (see table at par. 1.2).
4
5
6
7
360
450
540
630
60
75 l/h
90 l/h
105 l/h
l/h
