General Instructions; Place Of Installation; Plumbing Connections - Ferroli BLUEHELIX 25 K 50 Instrucciones De Uso, Instalación Y Mantenimiento

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.
OFFSET = 20
90
10 9 8
7
85
6
80
5
70
4
60
3
50
2
40
1
30
20
fig. 11 - Example of compensation parallel curve offset
Adjustments from Remote Timer Control
If the Remote Timer Control (optional) is connected to the boiler, the above ad-
A
justments are managed according to that given in table 1.
Table. 1
Heating temperature setting
DHW temperature adjustment
Summer/Winter Switchover
Eco/Comfort selection
Sliding Temperature
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
40
EN
OFFSET = 40
90
10 9 8 7
85
80
70
60
50
40
30
20
Adjustment can be made from the Remote Timer Control menu
and the boiler control panel.
Adjustment can be made from the Remote Timer Control menu
and the boiler control panel.
Summer mode has priority over a possible Remote Timer Control
heating demand.
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.
Both the Remote Timer Control and the boiler card manage Slid-
ing Temperature adjustment: the boiler card Sliding Temperature
has priority.
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cod. 3541H134 - Rev. 00 - 11/2018
BLUEHELIX 25/32 K 50
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.
6 5
4
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
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be used with minimum temperature to -15°C. It is advisable to install the boiler under the
2
slope of a roof, inside a balcony or in a protected recess.
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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.
If the unit is enclosed in a cabinet or mounted alongside, there must be suffi-
A
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.
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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
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.
10
11
7
8
149
117
fig. 13 - Plumbing connections
F
9
132 92
), use suitably treated
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