Installation; Anti-Freeze Function; Connecting Up System - Sime MURELLE 25 OF Manual Del Usuario

2

INSTALLATION

The boiler must be installed in a fixed loca-
ES
tion and only by specialized and qualified
firms in compliance with all instructions
PT
contained in this manual. Furthermore, the
installation must be in accordance with cur-
rent standards and regulations.
GB
2. 1 INSTALLATION
- In the rooms where "type B" boilers are
installed, the air required for correct
combustion of the gas consumed by the
appliance must be able to flow in. It is the-
refore necessary to make openings that
cannot be blocked in the outer walls,
which must be at least 6 cm
kW of thermal capacity installed and with,
in any case, a minimum of 100 cm
- "Type C" appliances, with combustion
chamber and air supply sealed off from
the environment, can be installed in any
room in the house.
- "Type B and C" boilers are suitable for
functioning in a partially protected place,
as according to EN 297, with maximum
environmental temperature of 60°C and
minimum of -5°C. We recommend instal-
lation of these boilers under the protru-
ding slope of a roof, on a balcony, or in a
protected niche, always providing they
are not directly exposed to adverse
weather (rain, hail, snow). The boilers are
provided already equipped with anti-free-
ze functions.
2. 1 . 1

Anti-freeze function

The boilers are equipped with anti-freeze
function which activates the pumps and the
burner when the temperature of the water
contained inside the appliance drops to
below 6°C. The anti-freeze function is ensu-
red, however, only if:
- the boiler is correctly connected to the
gas and electricity supply circuits;
- the boiler is constantly fed;
- the boiler ignition is not blocked;
- the essential components of the
boiler are all in working order
In these conditions the boiler is protected
against frost down to an environmental
temperature of -5°C.
ATTENTION: In the case of installation in a
place where the temperature drops below
0°C, the connection pipes must be pro-
tected.
2.2 COMPLEMENTARY
ACCESSORIES
To facilitate connecting the boiler to the
system, the following accessories can be
supplied on request, complete with instruc-
tions for assembly:
- Installation plate code 8075416
- Curvette and gas taps/sanitary water
output set code 8075418
- Taps kit code 8091806
78
- Pol yphosphat es doser kit code
81071700
- Kit of couplings for replacing wall-hung
boilers of other makes code 8093900
- Solar kit for the instantaneous code
8105101
- Hydr aulic
BFT/BT100 tank unit code 8091111.
2.3

CONNECTING UP SYSTEM

To protect the heat system from damaging
corrosion, incrustation or deposits, before
installation it is extremely important to
clean the system using suitable products
2
for every such as, for example, Sentinel X300 (new
systems), X400 and X800 (old systems)
2
. or Fernox Cleaner F3. Complete instruc-
tions are provided with the products but,
for further information, you may directly
contact SENTINEL PERFORMANCE SOLU-
TIONS LTD or FERNOX COOKSON ELECTRO-
NICS. For long-term protection agains cor-
rosion and deposits, the use of inhibitors
such as Sentinel X100 or Fernox Protec-
tor F1 is recommended after cleaning the
system. It is important to check the con-
centration of the inhibitor af ter each
system modification and during maintenan-
ce following the manufacturer's instruc-
tions (specific tests are available at your
dealer). The safety valve drain must be con-
nected to a collection funnel to collect any
discharge during interventions. If the hea-
ting system is on a higher floor than the
boiler, install the on/off taps supplied in kit
op tional on
delivery/return pipes.
WARNING: Failure to clean the heat
system or add an adequate inhibitor
invalidates the device's warranty.
"25-30 OF/25-30-35 BF" models
8
1
12
10 11
"20-25 BFT/25 OFT" models
12
8
connection kit boiler
t he heating sy s t em
5 7 6
3 2 9 4
13 11
14 9 4
Gas connections must be made in accor-
dance with current standards and regula-
tions. When dimensioning gas pipes from
the meter to the module, both capacity
volume (consumption) in m 3 /h and gas
density must be taken into account.
The sections of the piping making up the
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);
– 2.0 mbar for family III gases (butane or
propane).
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.
2.3. 1 Filter on the gas pipe
The gas valve is supplied ex factory with an
inlet filter, which, however, is not adequate
to entrap all the impurities in the gas or in
gas main pipes.
To prevent malfunctioning of the valve, or in
certain cases even to cut out the safety
device with which the valve is equipped,
install an adequate filter on the gas pipe.
2.5 SYSTEM FILLING
Filling of the boiler and the system is done
by the charge cock (2 fig. 4). The charge
pressure, with the system cold, must be
between 1 and 1.5 bar. During system fil-
ling you are recommended to keep the main
switch turned OFF. Filling must be done
slowly so as to allow any air bubbles to be
KEY
1 Sanitary water header
2 Fill tap
3 D.H.W. filter
4 By-pass
5 Water rate adjuster
6 D.H.W. exchanger
7 Microswitches
8 Water flow switch
9 Boiler discharge
10 D.H.W. sensor
11 Water pressure transducer
12 Safety thermostat
13 Deviator valve
14 System loading connection
Fig. 4