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TECHNICAL MANUAL FOR INSTALLATION, USE AND MAINTENANCE
Normal pump
Expanded pump
Before making the hydraulic connections (heating, sanitary
water, relief valve and combustible gas discharge) remove
any test water plugs and check the system sealing.
In areas where the temperature may reach very low values,
add some antifreeze to the heating system water.
Discharge the sanitary system when the boiler is not used
for very long periods.
To prevent freezing, operate the equipment by means of a
room chrono-thermostat.
FIGURE 3:
heating system available head/flow rate
chart.
3.3 AIR INLET AND FLUE DISCHARGE
E Models
(SE, XE).
The boiler takes the carburant air necessary for its operation
from the installation area, where air intakes must be
installed, in compliance with current regulation.
NOTE
! The equipment must be installed in a constantly
ventilated environment. Flue discharge Ø 130mm, must
comply with national and local technical regulation
concerning boilers which are not equipped with a fan on
the combustion circuit (natural draught).
ER (SER, XER) model
The boiler has a forced draught and a sealed combustion
chamber; hence the need for two separate circuits: one
for carburant air, taken from external environment and one
for combustion flue discharge. These circuits can follow
any path within the boiler; they can be very close to each
other, or even coaxial. They can be connected to joint ducts
for sealed-chamber boilers or go directly to the roof or the
wall in compliance with laws in force (fig. 5).
The best (Directive 92/42/CEE) of the sealed chamber
boiler can be achieved in all installation conditions (air-flue
system, pipe diameter and length) thanks to the presence
of an air-intake calibrating diaphragm and an adjustable
shutter.
The shutter is located on the front part of the hood (Fig. 4
and 5) and it is placed on the “-” (upper) position by the
Manufacturer; to remove it to the “+”(lower) position, lift
the lever and turn it clockwise, down to the “+” position.
Bigger-diameter pipes can be used to collect and discharge
condensate.
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