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1.1 APPLIANCE’S CLASSIFICATION
DEFINITION
These appliances are classified as: “Direct gas fired
storage water-heater.
CATEGORY
The category of the appliance is:
II
2H3+……………..
Great Britain & Ireland
This means that the appliance is suitable for gas of 2nd
family (G20/25) and 3rd family (G30/31).
TYPE
Following the European Regulation EN 483, the appli-
ance is of kind B
11BS
, that means an “appliance settled to
be connected to a flue gas system for the gas exhausting
outside the room in which it is installed and where the
combusting air is taken directly from the room where
the appliance is installed”. The appliance:
•
is supplied with draught diverter in the combustion
products circuit;
•
is supplied with a control device for flue gas spill-
age.
•
1.2 PACKAGING CONTENT
The appliance is delivered packaged in a wooden crate
with appropriate protections.
The draught diverter is delivered in a separate cardboard
box, not assembled.
An envelope contains this booklet, the warranty paper
and screws to fix the draught diverter.
1.3 CONSTRUCTIONAL AND OPERA-
TIONAL DESCRIPTION
The appliance is manufactured according to the EC
regulation 90/396(CEE for gas appliances, and has
therefore, the CE agreement. In particular the manufac-
turing process and the components satisfy the technical
European regulation EN 89.
The purpose of this appliance is to allow the heat ex-
change between the gas combustion products, burned in
the combustion chamber and the water inside the tank.
The combustion chamber is placed in the lower part of
the appliance, under the water tank. On the top is the
draught diverter.
Flue pipes, which go through the water tank, allow the
exhausting of the gas of the combustion chamber into
the chimney flue and for the thermal exchange. Turbula-
tors have been installed inside the flue exhaust pipes in
order to improve the thermal exchange.
DRAUGHT DIVERTER
It is placed on the combustion products circuit and its
purpose is to keep into pre-set limits the combustion quality
and the combustion stability within min. and max. conditions.
ATMOSPHERIC BURNER
It is composed of two parts: a principal burner, which ensures
the thermal function of the appliance, and a pilot burner
needed to light the principal burner.
fig. 1.3 / 1
A
draught diverter
B
atmospheric burner
C
control panel
D
tank
E
combustion chamber
CONTROL PANEL
On the instrument control panel there is all required to control
and adjust the normal operation of the appliance: On/Off
switch, water temperature thermostat, water temperature ther-
mometer. There is also the security flue gas spillage thermostat
in case of improper combustion (manual reset) and a red light
which lights up when this thermostat has operated.
TANK
It is made of thick sheet steel and assures great resistance to
pressure. The inside is coated with opal glass (a vitreous coat-
ing baked at over 850°).
This allows a high chemical resistance to organic solvents and
many other chemical substances, excellent abrasion resistance
(low friction) and very good thermal stability. This allows
long-life and a higher quality water. Inspection and cleaning of
the tank are allowed by an appropriate clean out and inspection
door.