Description Of The Boiler; Functional Diagram - Sime Dewy 30 Guia Del Usuario

1

DESCRIPTION OF THE BOILER

1. 1 INTRODUCTION
"DEWY 30/80" boilers are premix con-
densation thermal appliances which use
microprocessor technology for function
1.2 DIMENSIONS
215
460
1.3

FUNCTIONAL DIAGRAM

80
control and management. They comply with
the european directives 90/396/CEE,
89/336/CEE, 73/23/CEE, 92/42/CEE
and with the european specifications EN
483 - pr EN 625.
330
745
These appliances can be fired by natural
gas (methane) and propane gas (G31).
The instructions given in this manual are
provided to ensure proper installation and
perfect operation of the appliance.
310
240
55
M G
R
S3
S2
U
S1
C
E
130
230
230
KEY
1 Fan
2 Water-gas exchanger
3 Breather valve
4 Gas valve
7 C.H. sensor (SM)
8 100°C safety stat
9 Air relief valve
10 Circulation pump
11 Expansion vessel
12 Safety valve
13 Boiler discharge
14 Water pressure transducer
15 Flowmeter
16 Automatic by-pass
21 Gas cock
24 Limit stat
25 Condensation water trap
26 Gas rate adjuster
27 Motor-operated diverter valve
28 Storage tank 80 liter
29 Filling cock
30 D.H.W. discharge cock
31 Magnesium anode
32 D.H.W. expansion vessel
33 D.H.W. safety valve 7 bar
R C.H. return 3/4"
M C.H. flow 3/4"
G Gas connection 3/4"
E D.H.W. inlet 3/4"
U D.H.W. outlet 3/4"
C Recirculation 3/4"
S1 C.H. safety relief valve
S2 Tank unit safety relief valve
S3 Condensation outlet ø 25
Fig. 1
Fig. 2