16
5 DESCRIPTION OF THE APPLIANCE
5.1
Characteristics
Murelle Pro HE MkII
are condensing wall mounted boilers which
Sime Ltd
has produced for installation into domestic properties
for heating and hot water production. The main design choices
made by
Sime Ltd
for the
Murelle Pro HE MkII
boilers are:
– the total pre-mix microflame burner combined with a steel
heat exchanger for heating and a rapid heat exchanger for
DHW
– room sealed, Type C appliance. Suitable for use on sealed
heating systems
– the command and control microprocessor electronic board
not only allows a better management of the heating system
and the system for domestic hot water production but it can
also be connected to room thermostats or a remote control
(with an Open Therm protocol), an auxiliary sensor for the
connection of any possible solar kits or to an external sen-
sor. If this is the case, the boiler temperature varies on the
basis of the external temperature according to the selected
optimal climatic curve allowing for significant energy and
economic savings.
Other special features of the
Murelle Pro HE MkII
boilers are:
– the anti-freeze function which activates automatically if the
temperature of the water inside the boiler falls below the
threshold of the value set at parameter "tS 1.0" and , if there
is an external sensor, if the external temperature falls below
the threshold of the value set at parameter "tS 1.1".
– anti jamming function of the pump and diverter valve, this
activates automatically every 24 hours if no request for heat
has been made
– the chimney sweep function lasts 15 minutes and makes the
job of the qualified technician easier when measuring the pa-
rameters and combustion efficiency
– screen display of the operating and self-diagnostic param-
eters with error code display when the fault occurs. This
makes repair interventions easier and allows appliance op-
eration to be restored correctly.
– combustion control function: this function is always active
during boiler operation and checks that combustion is within
the established safety adjustment range. Otherwise, after a
series of checks carried out automatically, the system will
block the appliance and an alarm will appear on the display.
m
CAUTION
During the auto-check cycles the CO value could ex-
ceed 1000 ppm for few seconds.
5.2
Check and safety devices
The
Murelle Pro HE MkII
boilers are equipped with the following
check and safety devices:
– thermal safety thermostat 100°C
– 3 bar relief valve
– heating water pressure switch
– delivery sensor (SM)
– DHW sensor (SS)
– exhaust sensor (SF).
d
DO NOT
Do not commission or operate the appliance with
safety devices which do not work or which have been
tampered with.
a
WARNING
Safety device may only be replaced by profession-
al qualified personnel using
Sime Ltd
original spare
parts.
5.3
Identification
The
Murelle Pro HE MkII
boilers can be identified by means of:
1 Packaging label:
this is located on the outside of the pack-
aging and provides a code, the serial number of the boiler
and the bar code
2 Energy Efficiency Label:
this is positioned on the outside of
the packaging to notify the User of the level of energy sav-
ings and reduced environmental pollution produced by the
appliance
3 Technical Data Plate:
this is located inside the front panel
of the boiler and provides the technical specification, ap-
pliance performance and any other information required by
law.
3
4
1
3
4
Code
Model
Serial/N.
GC No
_ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _
_ _ - _ _ _ - _ _
1
I II
A
B
C
D
E
F
G
2015
811/2013
Cod. 6244745
dB
kW
A
++
A
+
A
B
C
D
E
F
G
2
2
Fig. 7
KEY:
1
Packaging label
2
Energy Efficiency Label
3
Technical Data Plate
4
Steaker of product identification
