10
ENG
“humiSonic ventilation” +0300063EN - rel. 1.3 - 14.05.2021
2. WATER CONNECTIONS
IMPORTANT: before proceeding with the water connections,
make sure that the humidifier is not connected to the mains power
supply.
2.1 Warnings
1. Only use demineralised water. Install a shut-off valve for each humidifier.
Allowable water pressure: from 1 to 6 bars (from 14.5 to 87 psi);
2. The connections between the pipes/hoses in contact with
demineralised water and the humidifier must be made from resistant
material suitable for this use (e.g. PVC or stainless steel): nominal
pressure ≥ 6 bar (87 psi), working temperature at least 1…40°C
(33.8…104°F);
3. The water lines must not be fouled by dust particles or other
substances. Carefully clean the lines before connecting to the
humidifier;
4. All humiSonic ultrasonic humidifiers are supplied with quick couplings
for connecting the fill hose φe/φi = 8/6 mm (OD 5/16”, ID 15/64”).
NOTICE: for the Australian market and to comply with Watermark
requirements, a watermarked approved dual check valve shall be installed
in the supply line to the humidifier when connected to potable water.
Should on the other hand the humidifier be fed with treated water from a
Carel reverse osmosis system connected to potable water, the dual check
valve shall be installed in the supply line to the reverse osmosis system.
2.2 Water connections (parts not included)
• Install a manual shut-off valve upstream of the installation (so as to
shut off the water supply); the valve must be suitable for use with
demineralised water.
• Install a mechanical filter (10 μm) downstream of the manual shut-off
valve to trap any solid impurities; the filter must be fitted with shut-off
devices to allow cleaning;
• Install a condensate collection basin that is at least 0.6 m longer than
the humidifier, made from corrosion-resistant material such as plastic
or stainless steel.
Important:
1. when installation is completed, flush the supply hose for around 30
minutes by piping water directly into the drain, without sending it
into the humidifier. After installing the valve, flush with water to
eliminate any processing residues and oil and prevent that enter the
humidifier;
2. the drain hose must have a internal minimum diameter of 6 mm
(15/64”); it must not have any bends that block water flow; the drain
line must comply with national and local standards in force and
must include a funnel to ensure interruption of continuity and a
drain trap to prevent the return of bad odours. The end of the line
must have a downwards slope to assist drainage;
3. do not block the atomised water outlet or the intake air openings;
4. always check for water leaks. If the humidifier is sprayed with water
during operation, short circuits may occur;
5. if there is the risk of the feedwater freezing, or using heating cables
on water pipes.
water drain
water inlet
drain pan
Fig. 2.a
2.3 Positioning
As seen in chap.1, the humidifier must be installed in ducting where the
air velocity is between 1.5 and 3 m/s (295…590 fpm).
Note: when calculating air velocity in the duct, keep in mind that the
area occupied by the humidifier needs to be subtracted from the cross-
section of the duct.
The recommended position is downstream of the heating coil.
CD
HU
CC
G
I
PC
I
G
E
DP
Fig. 2.b
Key
G
I
Total air flow-rate introduced HU Humidifier
CD Combined dampers DP Condensate collection tank
G
E
Outside air flow-rate CC Cooling coil
PC Heating coil
If assembling multiple humidifiers, arrange them in a structure that can
support the weight of the appliances and that leaves optimum space
between the units, so as to ensure efficient operation. Install a manual
shut-off valve for each humidifier.
Note: any obstacles downstream of the humidifier are places where
water may condense.
2.4 Water connections
Once the humidifier has been fitted, make the water connections as
follows:
1. Unscrew the screws (A) and remove the right side cover (B);
B
C
a
r
i
c
o
/
F
i
ll
S
c
a
r
i
c
o
/
D
r
a
i
n
A
Fig. 2.c
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