Place Of Installation; Plumbing Connections; Gas Connection; Electrical Connections - Ferroli DOMItech F 24 Instrucciones De Uso

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
Heating temperature setting Adjustment can be made from the Remote Timer Control menu and the
boiler control panel.
Hot water 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 heat-
ing demand.
Eco/Comfort selection Adjustment can only be made from the boiler control panel.
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. Bring it to the initial value by means of the filling cock detail 1 fig. 6. At
the end of the operation always close the filling cock.
B
fig. 6 - Filling cock
A Open
B Closed
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

The combustion circuit is sealed with respect to the place of installation, therefore the
unit can be installed in any room. However, the place of installation must be sufficiently
ventilated to prevent the creation of dangerous conditions in case of even small gas
leaks. This safety standard is required by the EEC Directive no. 90/396 for all gas units,
including those with sealed chamber
The unit is suitable for operation in a partially protected place in compliance with EN 297
pr A6, for temperatures to -5°C. It is advisable to install the boiler under the slope of a
roof, inside a balcony or in a sheltered recess.
Therefore the place of installation must 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. Fix
the bracket to the wall according to the measurements given in the cover drawing and
hook the boiler on it. A metal template for marking the drilling points on the wall is avail-
able by request. The wall fixing must ensure stable and effective support for the gener-
ator.
A
If the unit is enclosed in a cabinet or mounted alongside, a space must be pro-
vided for removing the casing and for normal maintenance operations

3.3 Plumbing connections

Warnings
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 making the connection, check that the unit is arranged for operation with
the type of fuel available and carefully clean all the system pipes.
30 EN
1 A
cod. 3540R832 - 03/2011 (Rev. 00)
DOMItech F 24 - F 32
Carry out the relevant connections according to the diagram in fig. 7and the symbols giv-
en on the unit.
A
5
1 2 3 4
6
36,5 60 61
59 80,5 103
fig. 7 - Plumbing connections
A =DOMItech F 24 - B =DOMItech F 32
1 = System delivery - 2 = DHW outlet
3 = Gas inlet - 4 = Cold water inlet
5 = System return - 6 = Safety valve drain
Note: The unit is equipped with an internal by-pass in the heating circuit.
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 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.

3.4 Gas connection

The gas must be connected to the relevant connection (see fig. 7) in conformity with cur-
rent standards, with a rigid metal pipe or with a continuous surface flexible s/steel tube,
installing a gas cock between the system and boiler. Make sure all the gas connections
are tight.

3.5 Electrical connections

B
The unit must be connected to an efficient earthing system in accordance with
current safety standards. Have the efficiency and suitability of the earthing sys-
tem checked by professionally qualified personnel; the Manufacturer declines
any liability for damage caused by failure to earth the system.
The boiler is prewired and provided with a "Y" type cable (without plug) for con-
nection to the electric line. The connections to the mains must be made with a
permanent connection and equipped with a double-pole switch with contact
gap of at least 3 mm, installing fuses of max. 3A between the boiler and the line.
Make sure to respect the polarities (LINE: brown wire / NEUTRAL: blue wire /
EARTH: yellow/green wire) in the connections to the electric line.
B
The user must not change the power cable. If damaged, switch the unit of and
have the cable replaced by professionally qualified personnel. If replacing the
power cable, only use "HAR H05 VV-F" 3x0.75 mm2 cable with max. outside
diameter of 8 mm.
Room thermostat (optional)
B
IMPORTANT: THE ROOM THERMOSTAT MUST HAVE VOLTAGE-FREE
CONTACTS. CONNECTING 230 V TO THE ROOM THERMOSTAT TERMI-
NALS WILL PERMANENTLY DAMAGE THE ELECTRONIC BOARD.
When connecting time controls or a timer, do not take the power supply for
these devices from their breaking contacts Their power supply must be by
means of direct connection from the mains or with batteries, depending on the
kind of device.
Accessing the electrical terminal block
The terminal block for connection of the room thermostat (detail 1 fig. 8) or the remote timer
control (detail 2 fig. 8) is accessed from the bottom of the boiler, as indicated in fig. 8.
fig. 8 - Accessing the terminal block
1 = Room thermostat connection
2 = Remote timer control connection (OPENTHERM)
B
5
1 2 3 4
6
36 60 60 90 95 59
121
), use suitably treated
3
1
1
2
1
2
2