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

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
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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. 3541H130 - Rev. 00 - 09/2015
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-
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TIONAL AND LOCAL STANDARDS AND THE RULES OF PROPER WORKMANSHIP.
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3.2 Place of installation

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The combustion circuit is sealed with respect to the place of installation room, therefore
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the unit can be installed in any room. However, the place of installation must be ade-
quately ventilated to prevent the creation of dangerous conditions in case of even small
gas leaks. This safety regulation is laid down by EEC Directive no. 2009/142 for all gas
units, including those with sealed chamber.
The unit is suitable for operation in a partially protected place in conformity with EN 297/
A6, with minimum temperature -5°C. If equipped with the special antifreeze kit, it can be
used with minimum temperatures to -15°C. The boiler must be installed is a protected
place, e.g. under the slope of a roof, inside a balcony or in a sheltered recess.
The place of installation must in any case be free of dust, flammable materials or objects
or corrosive gases.
The boiler is arranged for wall mounting and comes standard with a hooking bracket. The
wall fixing must ensure a stable and effective support for the generator.
If the unit is enclosed in a cabinet or mounted alongside, a space must be pro-
A
vided for removing the casing and for normal maintenance operations

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. 13and the symbols
on the unit.
41 69
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.
BLUEHELIX 25 K 50
10
11
7
8
149
117
fig. 13 - Plumbing connections
F
9
132 92
), use suitably treated
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