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2.10.1 Preparation for the condensate drain
The evacuation of the condensate produced by the appliance POW-
during its normal operationmust be carried out through a
ER MAX
siphoned condensate collector, placed under the thermal module
itself. This collector is installed as standard in models POWER MAX
50 P DEP - POWER MAX 50 P, while it is available as an accessory for
models POWER MAX 65 P ÷ POWER MAX 150.
The condensate coming out of the drainer must be collected for drip-
ping into a taped vessel connected to the sewer system, if necessary
by interposing a neutralizer (for more information see paragraph "
Neutralising the condensate"), according to the following procedure:
- Fit a drip tray near the condensate discharge outlet, adding a
condensate neutraliser if necessary
- Connect the drip collection receptacle to the local drain or
sewer system using a siphon.
The drip tray can be created by fitting a cup or simply a polypropyl-
ene bend, suitable for collecting the condensate that comes out of the
appliance and any liquid leaking from the safety valve.
The maximum distance between the condensate drainage of the ap-
pliance and the socket (or socket pipe) must not be less than 10 mm.
The connection to the local drain or sewer system must be executed
using a siphon in order to prevent unpleasant odours from being re-
leased back into the room from the sewer.
We advise using plastic (PP) piping for building the condensate
drainage.
a
Never use copper pipes under any circumstances, as the con-
densate itself will cause them to rapidly deteriorate.
26
Condensate
basing
(accessory)
b
Execute the condensate drain outlet so as to prevent combus-
tion gases leaking into the environment or the drain or sewage
system by sizing the siphon (height H) as described in Para-
graph "Discharge of combustion products".
b
Always maintain a slope angle "s" of over 3° and ensure that
the diameter of any condensate drain pipe is greater than that
of the connection fitted at the drain outlet
H
i >3%
residential discharge
Drip tray
b
Connect the condensate drain hose to a domestic water drain
in accordance with national and local legislation and stand-
ards.
b
Fill the siphon with water before activating on the thermal mod-
ule in order not to release any combustion products into the
environment when the thermal module is first switched on.
b
The condensate drain must be suitably siphoned. Fill the si-
phon with drain in order to prevent the release of combustion
products when the appliance is first switched on.
b
It is recommended that condensate from the thermal module
and from the flue should be channelled to the same drain pipe.
b
The connection pipes used must be as short and as straight
as possible. Any curves or sharp bends can lead to hoses be-
coming clogged and, therefore, can prevent proper conden-
sate discharge
b
Size the condensate drain outlet so as to ensure the proper
drainage of waste liquids without leaks
b
The condensate drain must be connected to the drain and
sewage network in such a ways so that the condensate may
not freeze under any circumstances
2.11 Neutralising the condensate
The UNI 11528 Standard provides for mandatory neutralisation of
condensate for systems with total power of over 200 kW. For systems
with total power from 35 to 200 kW, neutralisation may or may not be
mandatory depending on the number of flats (for residential applica-
tions) or the number of occupants (for non-residential applications)
served by the aforementioned system.
2.11.1 Water quality requirements
It is ABSOLUTELY NECESSARY to treat the water system in order
for the heat generator to work properly and to guarantee its service
life, as well as that of all its components. This not only applies to jobs
carried out on existing installations but also on new installations.
Sludge, lime-scale and pollutants contained in the water can cause
permanent damage to the heat generator, also within a short time and
notwithstanding the quality standards of the materials used.
Contact the Technical Assistance Centre for any further information
on type and use of additives.
The heat transfer fluid (water) for the central heating circuit must con-
form to the quality parameters given in the following table:
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