ECOUNIT F
23
Cod. 30902340 - Rev. 03 - 09/2015
EN
1. General instructions
•
Carefully read the instructions contained in this instruction
booklet.
•
After hot water tank installation, inform the user regarding
its operation and give him this manual, which is an integral
and essential part of the ECOUNIT F and must be kept with
care for future reference.
•
Installation and maintenance must be carried out by profes-
sionally qualified personnel, according to current regulations
and the manufacturer's instructions. Do not carry out any
operation on the sealed control parts.
•
Incorrect installation or inadequate maintenance can result
in damage or injury. The Manufacturer declines any liability
for damage due to errors in installation and use or failure to
follow the instructions.
•
Before carrying out any cleaning or maintenance operation,
disconnect the unit from the electrical power supply using the
system switch and/or the special cut-off devices.
•
In case of a fault and/or poor operation, deactivate the unit
and do not try to repair it or directly intervene. Contact pro-
fessionally qualified personnel. Any repair/replacement of
the products must only be carried out by qualified personnel
using genuine parts. Failure to comply with the above can
compromise the safety of the unit.
•
This unit must only be used for its intended purpose. Any
other use is deemed improper and therefore hazardous.
•
The packing materials are potentially hazardous and must
not be left within the reach of children.
•
The unit must not be used by people (including children) with
limited physical, sensory or mental abilities or without expe-
rience and knowledge of it, unless instructed or supervised
in its use by someone responsible for their safety.
•
The unit and its accessories must be appropriately disposed
of, in compliance with the current regulations.
• The images given in this manual are a simplified represen
-
tation of the ECOUNIT F. In this representation there may
be slight and insignificant differences with respect to the
ECOUNIT F supplied.
2. Introduction
ECOUNIT F is a vertical hot water storage tank with single coil (vers. 1C) or with double coil (vers. 2C).
This unit is designed for heating domestic hot water to a temperature below boiling point at atmospheric pressure and must
be connected to an energy source and a DHW system, compatibly with its performance characteristics and power.
PLACE OF INSTALLATION
The place of installation must be protected against frost.
The hot water storage tank must be placed in the immediate vicinity of the heat generator, to avoid pointless heat loss. Suitably
insulate the feed pipes.
PLUMBING CONNECTIONS
Carry out the relevant connections according to the cover diagram and the symbols given on the unit.
It is advisable to install the unit near the main hot water drawing point, in order to avoid heat loss along the pipes, and possibly
near a drain to facilitate any emptying operations.
The unit is arranged for connection to a recirculation pipe (
ref. 20
in fig. 5 and fig. 6): this pipe must be insulated. For recircula
-
tion, it is necessary to install a pump equipped with an operation timer or a minimum contact thermostat, to obtain its activation
on cooling of the recirculation water.
If the union is not used, fit a suitable plug.
A relief valve (
ref. 11
in fig. 5 and fig. 6) with setting equal to or greater than the max. DHW pressure given in the
technical
data tables
on pagina 26 must be installed on the cold water feed pipe upstream of the hot water tank.
The connection pipe between the hot water tank and relief valve must absolutely not be shut off, as damage to the hot water
tank could occur due to overpressure.
The relief valve outlet must be connected to a funnel or collection pipe to prevent water spurting onto the floor in case
of overpressure in the hot water tank circuit. Otherwise, if the discharge valve cuts in and floods the room, the boiler
manufacturer cannot be held liable.
Slight dripping from the relief valve is normal in the heating phase; therefore it is advisable to connect it to a drain with trap.
In case of a mains pressure near the valve setting values, a suitable pressure reducer (
ref. 15
in fig. 5 and fig. 6) must be fitted
as far away as possible from the unit.
DHW expansion tank
The DHW expansion vessel must be sized according to the capacity of the hot water tank and the cold water pressure.
If the system has a pressure reducer, for the reason described above, and/or a check valve, it is necessary to install an expan-
sion tank (
ref. 14
in fig. 5 and fig. 6) having a capacity not less than 5% of the hot water tank nominal capacity.
Do not install a check valve between the relief valve and the expansion tank. In general, to safeguard the unit and the system,
it is advisable to install the expansion tank with the characteristics defined above.
Fill the special expansion tank diaphragm chamber according to the manufacturer's instructions.
