INSTALLER
31
MAINTENANCE
The neutralisation unit should be serviced at regular intervals (at least once a year) or as needs require. The frequency of
servicing depends on the characteristics of the system. When servicing the unit, always check the level of the granulate. The
minimum granulate level is 15 cm below the top of the granulate box. The initial charge of neutralisation product should be
enough to last at least one season of heating operation with maximum condensate formation.
The easiest way to check the correct functioning of the neutralisation unit is to use litmus papers for pH testing. These are
readily available from chemists' shops and chemical suppliers. Treated condensate leaving the unit must have a pH between
6.5 and 9. If limescale forms on the surface of the neutralisation unit, replace the entire granulate charge.
The inlet fitting (A) of the HN2 neutralisation unit (the
lower fitting) must be connected to the boiler conden-
sate drain fitting using the flexible hose (C) supplied.
This condensate drain hose is specially made to prevent
combustion fumes escaping into the atmosphere.
The outlet fitting (B) of the neutralisation unit (the top
fitting) must be connected to the boiler room’s waste
water drain pit using another section of flexible hose (not
supplied).
IMPORTANT!
The boiler room’s condensate drain pit must be located
no more than 1.5 metres above the neutraliser.
b
All connecting hoses must be kept as straight and
as short as possible. Any curves or sharp bends
can lead to the hoses becoming clogged and can
therefore prevent proper condensate discharge.
Hoses should also be fixed to the floor and suitably
protected whenever possible.
B
(1”)
1,5 m
max
A
(1”)
C
HN2
