40
1.1 INTRODUCTION
MURELLE EV are the gas fuelled burner
groups for heating and the production of
hot sanitary water, constructed to satisfy the
needs of collective residential housing and mo-
dern plant. They are apparatuses which con-
form to the European directives 2009/142/
CE, 2004/108/CE, 2006/95/CE and
92/42/CE. The can be fuelled by natural
gas (G20) or LPG (G30-G31). This booklet gi-
ves the instructions for the following models:
– MURELLE EV 25-30 OF with electronic
modulation ignition, open combustion
chamber with natural draw
– MURELLE EV 25-30-35 BF with elec-
tronic modulation ignition, sealed combu-
stion chamber forced flow.
– MURELLE EV 20-25 BFT only heating,
with electronic modulation ignition, sea-
led combustion chamber and forced flow,
which can be connected to D.H.W. stora-
ge tank.
The instructions given in this manual are
provided to ensure proper installation and
perfect operation of the appliance.
1 DESCRIPTION OF THE BOILER
1.2 DIMENSIONS
1.2.1 “25-30 OF” models (fig. 1)
350
124
19 8
D
=
=
55
55
=
=
65
65
65
65
L
22,5
718
700
65
D
Fig. 1
CONNECTIONS
R C.H. return
G 3/4” (UNI-ISO 228/1)
M C.H. flow
G 3/4” (UNI-ISO 228/1)
G Gas connection
G 3/4” (UNI-ISO 228/1)
E D.H.W. inlet
G 1/2” (UNI-ISO 228/1)
U D.H.W. outlet
G 1/2” (UNI-ISO 228/1)
DIMENSIONS 25 30
L mm 400 450
D mm 130 150
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