Ferroli BLUEHELIX 25/32 K 50, Instructions For Use, Installation And Maintenance

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BLUEHELIX 25/32 K 50
40
EN
Compensation curve and curve offset
Press the
reset button (detail 6 - fig. 1) for 5 seconds to access the "Sliding temperature"
menu; the display shows "CU" flashing.
Use the DHW buttons (detail 1 - fig. 1) to adjust the curve from 1 to 10 according to the
characteristic. By setting the curve to 0, sliding temperature adjustment is disabled.
Press the heating buttons (detail 3 - fig. 1) to access parallel curve offset; the display
shows "OF" flashing. Use the DHW buttons (detail 1 - fig. 1) to adjust the parallel curve
offset according to the characteristic (fig. 11).
Press the
reset button (detail 6 - fig. 1) again for 5 seconds to exit the "Sliding Temper-
ature" menu.
If the room temperature is lower than the required value, it is advisable to set a higher
order curve and vice versa. Proceed by increasing or decreasing in steps of one and
check the result in the room.
fig. 11 - Example of compensation parallel curve offset
Adjustments from Remote Timer Control
A
If the Remote Timer Control (optional) is connected to the boiler, the above ad-
justments are managed according to that given in table 1.
Table. 1
System water pressure adjustment
The filling pressure read on the boiler water gauge with the system cold must be approx
1.0 bar. If the system pressure falls to values below minimum, the boiler stops and fault
F37 is displayed. Operate the filling cock (detail 1 - fig. 12) and bring it to the initial value.
Always turn it off it afterwards.
Once the system pressure is restored, the boiler will activate the 300-second air venting
cycle indicated on the display by
FH .
fig. 12 - System filling cock
3. INSTALLATION
3.1 General Instructions
BOILER INSTALLATION MUST ONLY BE PERFORMED BY QUALIFIED PERSON-
NEL, IN ACCORDANCE WITH ALL THE INSTRUCTIONS GIVEN IN THIS TECHNICAL
MANUAL, THE PROVISIONS OF CURRENT LAW, THE PRESCRIPTIONS OF NA-
TIONAL AND LOCAL STANDARDS AND THE RULES OF PROPER WORKMANSHIP.
3.2 Place of installation
B
The combustion circuit is sealed with respect to the place of installation
and therefore the unit can be installed in any room. The place of installa-
tion, however, must be sufficiently ventilated to prevent the creation of
dangerous conditions in case of even small gas leaks. This safety precau-
tion is required by EEC Directive No. 2009/142 for all gas units, including
so-called sealed chamber units.
The unit is suitable for operation in a partially protected place in accordance with EN 297/
A6, with minimum temperature of -5°C. If provided with the special antifreeze kit it can
be used with minimum temperature to -15°C. It is advisable to install the boiler under the
slope of a roof, inside a balcony or in a protected recess.
The place of installation must be free of flammable materials, objects and dusts or cor-
rosive gases.
The boiler is arranged for wall mounting and comes as standard with a hooking bracket.
Wall fixing must ensure stable and effective support for the generator.
A
If the unit is enclosed in a cabinet or mounted alongside, there must be suffi-
cient space for removing the casing and for normal maintenance activities
3.3 Plumbing connections
Important
B
The safety valve outlet must be connected to a funnel or collection pipe to pre-
vent water spurting onto the floor in case of overpressure in the heating circuit.
Otherwise, if the discharge valve cuts in and floods the room, the boiler manu-
facturer cannot be held liable.
B
Before installation, carefully clean all the system pipes to remove any residuals
or impurities that could affect proper operation of the unit.
In case of replacement of generators in existing installations, the system must
be completely emptied and cleaned of any sludge and pollutants. For that pur-
pose only use suitable guaranteed products for heating systems (see following
section), that do not harm metals, plastics or rubber.
The manufacturer de-
clines any liability for damage caused to the generator by failure to prop-
erly clean the system
.
Carry out the relevant connections according to the diagram in fig. 13 and the symbols
on the unit.
fig. 13 - Plumbing connections
10 = System delivery - 8 = DHW outlet
7 = Gas inlet - 9 = Cold water inlet
11 = System return
Antifreeze system, antifreeze fluids, additives and inhibitors
When necessary, antifreeze fluids, additives and inhibitors can be used only if the man-
ufacturer of such fluids or additives guarantees that they are suitable and do not cause
damage to the exchanger or other components and/or materials of the boiler and system.
Do not use generic antifreeze fluids, additives or inhibitors that are not specific for use in
heating systems and compatible with the materials of the boiler and system.
Water system characteristics
In the presence of water harder than 25° Fr (1°F = 10ppm CaCO
3
), use suitably treated
water in order to avoid possible scaling in the boiler.
Antifreeze kit for outdoor installation (optional)
In case of installation outdoors in a partially protected place for temperatures lower than
-5°C and down to -15°C, the boiler must be equipped with the antifreeze kit to protect the
tap water circuit and air trap. The kit comprises a thermostat, electric heaters and a heat-
er for the air trap. Connect the kit to the electronic card and install the thermostat and
heaters on the tap water pipes as directed in the instructions attached to the kit.
Heating temperature setting
Adjustment can be made from the Remote Timer Control menu
and the boiler control panel.
DHW temperature adjustment
Adjustment can be made from the Remote Timer Control menu
and the boiler control panel.
Summer/Winter Switchover
Summer mode has priority over a possible Remote Timer Control
heating demand.
Eco/Comfort selection
On disabling DHW from the Remote Timer Control menu, the
boiler selects the Economy mode. In this condition, the
eco/com-
fort button (detail 7 - fig. 1) on the boiler panel is disabled.
On enabling DHW from the Remote Timer Control menu, the
boiler selects the Comfort mode. In this condition it is possible
select one of the two modes with the
eco/comfort button (detail 7
- fig. 1) on the boiler panel.
Sliding Temperature
Both the Remote Timer Control and the boiler card manage Slid-
ing Temperature adjustment: the boiler card Sliding Temperature
has priority.
20
30
40
50
60
70
80
90
85
20
30
40
50
60
70
80
90
85
1
2
3
4
5
6
8 9 10
7
1
2
3
4
5 6 8 9 10 7
OFFSET = 20 OFFSET = 40
1
10
8
7
9
11
17
2
F
23
4
174
41 69
149
117 132 92
cod. 3541H134 - Rev. 00 - 11/2018