Main Components; Installation; Boiler Room; Connecting Up System - Sime Dewy 30 Guia Del Usuario

1.5

MAIN COMPONENTS

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2

INSTALLATION

The boiler must be installed in a fixed loca-
tion and only by specialized and qualified
firms in compliance with all instructions
contained in this manual.
Furthermore, the installation must be in
accordance with current standards and
regulations.
2. 1

BOILER ROOM

The "DEWY 30/80" version boilers can be
installed in any domestic environment
without any location restrictions or combu-
rent air requirements.
2.2

CONNECTING UP SYSTEM

Before proceeding to connect up the boi-
ler, you are recommended to make the air
circulating in the piping in order to elimi-
nate any foreign bodies that might be
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26
detrimental to the operating efficiency of
the appliance.
When making the hydraulic connections,
make sure that the dimensions indicated in
fig. 1 are respected.
The discharge pipe of the safety valve
must be connected to a collector funnel
for channelling away any discharge if the
safety valve goes into action.
The gas connection must be made using
seamless steel pipe (Mannesmann type),
galvanized and with threaded joints provi-
ded with gaskets, excluding three-piece
connections, except for initial and end con-
nections.
Where the piping has to pass through
walls, a suitable insulating sleeve must be
provided.
When sizing gas piping, from the meter to
the boiler, take into account both the volu-
me flow rates (consumption) in m
the relative density of the gas in question.
The sections of the piping making up the
KEY
1 Gas cock
2 Manual filling
3 Motor-operated diverter valve
4 Gas valve
5 Gas rate adjuster
6 Condensation water trap
7 Gas pressure take-off
8 Positive pressure take-off
9 Breather valve
11 Sensing electrode
12 Water-gas exchanger
13 Control panel
14 Fan
15 Ignition transformer
16 Negative pressure take-off
17 Flowmeter
18 C.H. sensor (SM)
19 Automatic breather
20 100°C safety stat
21 Circulating pump
22 Water pressure transducer
23 Safety valve
24 Magnesium anode
25 Storage tank 80 liter
26 D.H.W. discharge cock
system must be such as to guarantee a
supply of gas sufficient to cover the maxi-
mum demand, limiting pressure loss
between the gas meter and any apparatus
being used to not greater than 1.0 mbar for
family II gases (natural gas).
An adhesive data plate is sticked inside the
front panel; it contains all the technical data
identifying the boiler and the type of gas for
which the boiler is arranged.
2.2. 1 Connection of condensation
water trap
The drip board and its water trap must be
connected to a civil drain through a pipe
with a slope of at least 5 mm per metre to
ensure drainage of condensation water.
The plastic pipes normally used for civil
3 /h and drains are the only type of pipe which is
appropriate for conveying condensation
to the building's sewer pipes.
Fig. 3