General Instructions; Place Of Installation; Plumbing Connections - Ferroli DIVACONDENS D PLUS F 24 Instrucciones De Uso, Instalación Y Mantenimiento

System draining
The drain faucet ring nut is located under the safety valve inside the boiler.
To drain the system, turn the ring (ref. 1 - fig. 9) counter-clockwise to open the faucet. Do
not use any tools; use hands only.
To drain only the water in the boiler, first close the shut-off valves between the system
and boiler before turning the ring.
fig. 9- Safety valve with drain faucet
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
B
place of installation and therefore the unit can be in-
stalled in any room except in a garage. The place of
installation must be sufficiently ventilated to prevent
the creation of dangerous conditions in case of even
small gas leaks. Otherwise there may be a risk of suf-
focation and intoxication or explosion and fire. This
safety precaution is required by EEC Directive No.
2009/142 for all gas units, including so-called sealed
chamber units.
The unit is designed to operate in a partially protected place, with a minimum tempera-
ture of -5°C. If provided with the special antifreeze kit, it can be used with a minimum tem-
perature down to -15°C. The boiler must be installed in a sheltered place, for instance
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.
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
The safety valve outlet must be connected to a funnel or
B
collection pipe to prevent 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
manufacturer cannot be held liable.
Before making the connection, check that the unit is ar-
B
ranged for operation with the type of fuel available and
carefully clean all the system pipes.
Carry out the relevant connections according to the diagram in fig. 24 and the symbols
on the unit.
Note: The unit is equipped with an internal bypass in the heating circuit.
38
EN
DIVACONDENS D PLUS F 24
1
cod. 3541P652 - Rev. 00 - 08/2019
System water characteristics
DIVACONDENS D PLUS F 24 boilers are suitable for in-
B
stallation in heating systems with non-significant entry of
oxygen (ref. systems "case I" EN14868). A physical sep-
arator (e.g. plate heat exchanger) must be provided in
systems with continuous entry of oxygen (e.g. underfloor
systems without antidiffusion pipes or open vessel), or in-
termittent (less than 20% of system water content).
The water within a heating system must have the charac-
teristics required by UNI 8065, and comply with laws and
regulations in force and the provisions of EN14868 (pro-
tection of metallic materials against corrosion).
The filling water (first filling and subsequent replenish-
ment) must be clear, with the hardness indicated in the ta-
ble below and treated with chemical conditioners that
prevent encrustations, corrosive or aggressive phenome-
na on metals and plastics, the formation of gas, and the
proliferation of bacterial or microbial masses in low tem-
perature systems.
The water contained in the system must be checked peri-
odically (at least twice a year during the seasons of use,
as required by UNI8065) and possibly have a clear ap-
pearance and must comply with the limits given in the fol-
lowing table.
WATER PARAMETER
Total filling water hardness (°F)
Total system water hardness (°F)
PH
Copper Cu (mg/l)
Iron Fe (mg/l)
Chlorides (mg/l)
Conductivity (µS/cm)
It must contain chemical conditioners in a concentration
sufficient to protect the system for at least one year. Bac-
terial or microbial loads must not be present in low tem-
perature systems.
Only use conditioners, additives, inhibitors and antifreeze
liquids declared by the producer suitable for use in heat-
ing systems and that do not cause damage to the heat ex-
changer or other components and/or materials of the
boiler and system.
Chemical conditioners must ensure complete deoxygen-
ation of the water, contain specific protection for yellow
metals (copper and its alloys), anti-fouling agents for
scale, neutral pH stabilizers and, in low-temperature sys-
tems, specific biocides for use in heating systems.
Recommended chemical conditioners:
SENTINEL X100 and SENTINEL X200
FERNOX F1 and FERNOX F3
EXISTING SYSTEM NEW SYSTEM
P < 150 kW P > 150 kW P < 150 kW
<10 <5 <10
<15 <10 <10
7 < Ph < 8.5 7 < Ph < 8.5
Cu < 0.5 mg/l Cu < 0.5 mg/l
Fe < 0.5 mg/l Fe < 0.5 mg/l
Cl < 30 mg/l Cl < 30 mg/l
< 200 µS/cm < 200 µS/cm
P > 150 kW
<5
<5