7
5.4 GAS CONNECTION: INSTALLATION OF THE APPLIANCE
WITH GAS HEATING
5.4.1 TYPE OF APPLIANCE
ATTENTION!
• For any installation or maintenance interventions
of gas appliances, contact enabled installers; “do-it
yourself” is prohibited.
• All gas appliances must be installed in compliance
with local and national laws in force.
• Before installation check that the distribution
conditions, nature and pressure of the gas and the
layout of the appliance are compatible.
The dryer is prepared for functioning with the type of gas,
the pressure and category indicated on the last page of
this manual. When installing the machine, check that it is
suitable for the type of gas with which it is powered; bad
combustion deriving from the use of a type of gas different
to that for which the appliance has been calibrated can
lead to the production of carbon monoxide, a highly toxic
gas. The steam and fumes drains are found at the rear of
the appliance, with diameters indicated in the technical
data table. In particular, all models have a unique drain
for the steam that is generated during drying, and one for
combustion products.
5.4.2 FLUE EVACUATION
The flue must have a minimum length of a 90° bend plus
1 linear metre and a total maximum length of 15
one 90° bend. The flue must have a smooth internal surface
and be in suitable material to resist the temperatures of the
outlet fumes (maximum temperature equal to
350°C
). The
Standards give detailed instructions regarding the type and
quality of the materials to be used for the piping and their
accessories, for smoke channels, the chimneys and the flues,
see:
UNI CIG 7129
UNI CIG 7131
Use
only
approved flues. For distances exceeding 15 metres
plus one 90° bend, insulated pipes must be used or the
diameter of the pipe itself must be increased.
ATTENTION!
• A bend of 90° corresponds to about on metre of linear
flue.
• The 10kg load model means 10kg of laundry including
50%, and not over, of relative humidity; the same rule
is valid for the 15kg model i.e. 15 kg including 50%
humidity.
A heavier load can compromise the air circuit and is
NOT allowed.
• The filter in the discharge channel is an integral part of
the appliance. This MUST NOT be allowed to function
without the above-mentioned filter.
• The air-fumes circuit control, necessary to check the
correct draught for discharging the combustion gases,
is a very important safety operation. This control
must be performed by the installation technician
after every intervention, even partial, carried out on
the plant or the appliance.
• Any appliance where a burner functions, absorbs the
air necessary for combustion and emits fumes: it is
therefore necessary that, if combustion takes place in
a closed room, the air is withdrawn from the outside
by a correct compulsory ventilation opening.
The flue, also if insulated, may heat up and it is good practice
to pay great attention to the potential risk of burns in the
case of accidental contact with the same. An obstacle of the
flue causes the shut-off of the gas supply because the safety
thermostat (TSR) with manual rearm intervenes, which is
placed on the rear of the machine.
Specialised staff must intervene to switch the machine back
on. They must remove the cause that blocked the flue,
activate the TSR safety thermostat again by pressing the
relevant rearm button on the rear of the machine and then
press the flame control unit rest button (at the side of the
electric power supply input).
Disconnect the machine from the electric mains before
carrying out any type of intervention.
5.4.3 SPECIFIC CHECKS FOR MACHINES WITH GAS
HEATING
Keep the filtering mesh and the extractor clean; both can be
accessed through the relevant inspection hatch on the front
of the machine underneath the door.
There are appropriate signals on the control panel that
indicate the blocking status of the filtering mesh, expressed
as a percentage. Pay particular attention to these daily
cleaning operations as the filtering mesh becomes saturated
with dust and threads as does the extractor, thus meaning
insufficient circulation of air inside the machine with 2
important consequences:
1) Combustion is incorrect and causes the continuous
intervention of the TSR safety thermostat or the alarm
E2, thus interrupting heating.
Summary of Contents for EB10
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