E210501X rev.1_ENG
16/11/2021
16
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Close the sealing screw of the gas valve pressure socket and check the tightness.
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Open the eavesdropping device and check the tightness.
The commissioning of the appliance gaseous fuels is not permitted outside the pressure ranges set out in the
appropriate tables described below in this manual.
14. GAS CONNECTION: TESTING
As soon as the connection work is completed, the appliance and the entire installation must be checked. You
should check:
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that the connections are made in accordance with the requirements and indications of this manual.
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that all the safety requirements of the standards, laws and directives in force are met.
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that the gas connections made are leak tight.
The equipment is then switched on according to the instructions in the user manual, checking the progressive
ignition of the burners and the appearance of the flame.
Carry out a control of gas consumption by the volumetric method. Detecting through the meter how much gas
has been consumed in a given unit of time: the resulting value is to be compared with the values shown in the
table.
15. EXHAUST PIPE WET AIR AND FLUE GASES
The exhaust duct fumes, and humid air must be made according to current regulations.
To avoid leakage of moist air and noise, the exhaust joints from the machine to the outside must be made
airtight, with materials (stucco, mastics, silicone preparations) resistant to high temperatures.
To avoid pressure drops, avoid the use of spiral ducts: therefore, use smooth and rigid metal pipes. The material
used must be compatible with the exhaust temperatures of the machinery.
Gas-based dryers are gas appliances of type B22, i.e., gas appliances dependent on an aerated environment
without wind protection device with blower behind the combustion chamber.
Flue gases from a gas dryer must absolutely be conducted outdoors through the chimney.
The flue gas and humid air duct, as short as possible, should be inclined in ascending form towards the exhaust
chimney.
To reduce pressure drops, avoid 90° curves, preferring two 45° curves.
At the lowest point, a condensate trap must be provided, and the derivation of this trap must comply with the
local provisions for connection to the water drain.
The pipeline must withstand crushing.
In the case of input into a collector, do not make "T" connections and consider the correct value of the collector
section. If necessary, provide for an increase in the collector section.
Manifold for multiple machines cannot be performed for gas machines.
For machines with electric or steam heating you can provide for a collector: do not make "T" connections and
consider the correct value of the collector section. If necessary, provide for an increase in the collector section.
