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4 - HYDRAULIC CONNECTIONS
4.15 ATOMISED WATER HUMIDIFICATION
There are two lines in parallel: for water and air.
The customer-installer must connect the humidifier to the
system lines according to the diagram provided by the
manufacturer.
The jet of atomised water must not come into direct
contact with objects, so as to avoid condensation and
dripping; in addition, check that the jet hits the
humidification zone;
The alignment of the two air/water lines and atomising
heads are well distributed to uniformly cover all the entire
area involved;
The ends of the two lines must be fitted with a ball valve
for cleaning or bleeding, specifically the first time the unit
is started and when started each new season.
For all other information on the operation, water-air and
electrical connections, refer to the manual provided by the
manufacturer of the humidifier.
The humidification zone is fitted with an inspection door
that must be opened only after having isolated it
electrically.
The maintenance technician must have closed the air and
water gate valves before working on the machine.
The maintenance technician must wear suitable safety
clothing and protective devices.
4.17 CONDENSATE DISCHARGE
The condensate collection basins, both for the cooling coils
and the humidifiers, are fitted with threaded male drain pipes.
The pipe protrudes by around 100mm from the side of the
tank.
! The drain must be fitted with a TRAP, to prevent the unit’s
fan from taking in miasma or bacteria from the decomposition
of sewerage, and thus creating inside the unit conditions ideal
for the proliferation of pathogenic germs, fungi and
microorganisms and favouring the spread of "Legionella
Pneumophila", responsible for "Legionnaires disease".
Drains without traps or with incorrect traps will cause air to
flow up through the drain and thus make it difficult to
discharge the condensate, which as a result will overflow into
the adjacent sections and leak from the air-conditioner when
the fan stops, flooding the entire surrounding zone.
IMPORTANT
The trap must not be connected to the drain with an air-
tight seal, so as to able to allow the venting of air and the
absorption of any sewerage that may return.
A drain trap that is under pressure must never, for obvious
reasons, be connected to a trap under depression.
The connection pipe after the drain trap must be
sufficiently sloped towards the sewerage drain and have a
diameter no less than the drain pipe.
The drains may be made from various materials: steel-
copper-PVC. If the drain is poorly anchored it may belly,
creating pockets of air and preventing the correct down-
flow of condensate.
It is good practice to externally insulate the pipes and the
drain trap, to prevent the condensate from dripping; for the
antifreeze function, if necessary fill the drain trap with
antifreeze during the cold season.
Observe the evaporation from the drain trap during
periods without condensation operation. The maintenance
technician must always keep the drain trap topped up; in
special cases, drain traps can be created with a high
water content.
It is commonly believed that a very deep drain trap is the
best solution. Sizing a drain trap requires knowledge of
what may occur when the drain is upstream and
downstream from the fan.
The drain trap must be fitted with a bleeding hose and cap
in the most suitable position.
The basin must be regularly cleaned, to avoid stagnant
condensate, deposits and the formation of algae.
4.16 Heater humidifier
read the manufacturer's manual
The customer-installer must connect the humidifier to the
system lines according to the diagram provided by the
manufacturer
Connect the steam production module with the steam
distribution module (2 mt pipes supplied)
