1
1 Technical features and dimensions
1.2
DIMENSIONS
Fig. 1
1.2.1
“MURELLE” version
1.2.1
“MURELLE BF” version
CONNECTIONS
R C.H. return
3/4”
M C.H. flow
3/4”
G Gas connection
3/4”
E Domestic water inlet
1/2”
U Domestic water outlet
1/2”
20
25
A ø mm
130
150
L mm
450
500
CONNECTIONS
R C.H. return
3/4”
M C.H. flow
3/4”
G Gas connection
3/4”
E Domestic water inlet
1/2”
U Domestic water outlet
1/2”
1.1
DESCRIPTION OF BOILER
“MURELLE - MURELLE BF”
boilers are gas-fired ther-
mal appliances for central heating and D.H.W. produc-
tion. They are equipped with all safety and control devi-
ces required by the law and their technical and operating
features meet the requirements of the specifications on
the safety and use of combustible gas. In addition, they
are designed and built in accordance with the European
Directives EN 297 - EN 483.
These appliances can be fired by natural gas (methane)
and butane gas (G30) or propane gas (G31). This book-
let provides instructions for the following boiler models:
–
“MURELLE 20 R CE IONO”
with electronic ignition
and modulation (central heating only);
–
“MURELLE 20 CE”
with electronic modulation;
–
“MURELLE 20 TX CE IONO”
with electronic ignition
and modulation, forced draught;
–
“MURELLE 20 CE IONO - 25 CE IONO”
with electronic
ignition and modulation;
–
“MURELLE 20 BFR CE IONO”
with electronic ignition
and modulation (central heating only), forced-draught
sealed-room;
–
“MURELLE 20 BF CE”
with electronic modulation, for-
ced-draught sealed-room;
–
“MURELLE 20 BF CE IONO - 25 BF CE IONO”
with
electronic ignition and modulation, forced-draught
sealed-room.
The instructions given in this manual are provided for the
installer to ensure proper installation and perfect opera-
tion of the appliance.
20 BF
25 BF
L mm
130
150
B mm
450
500
Fig. 1/a
