Carel UU02 - Water Connections; Warnings; Water Connections (Parts Not Included); Positioning

10
ENG
“humiSonic ventilation” +0300063EN - rel. 1.0 - 16.02.2016
2. WATER CONNECTIONS
IMPORTANT: before proceeding with the water connections,
make sure that the humidifi er is not connected to the mains power
supply.
2.1 Warnings
1. Only use demineralised water. Install a shut-off valve for each humidifi er.
Allowable water pressure: from 1 to 6 bars;
2. The connec tions between the pipes/hoses in contact with demineralised
water and the humidifi er must be made from resistant material
suitable for this use (e.g. PVC or stainless steel);
3. The water lines must not be fouled by dust particles or other substances.
Carefully clean the lines before connecting to the
humidifi er;
4. All humiSonic ultrasonic humidifi ers are supplied with quick couplings
for connecting the fi ll hose (OD / ID = 8/6 mm).
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 fi lter (10 m) downstream of the manual shut-off
valve to trap any solid impurities; the fi lter must be fi tted with shut-off
devices to allow cleaning;
• Install a condensate collection basin that is at least 0.6 m longer than
the humidifi er, made from corrosion-resistant material such as plastic
or stainless steel.
Important:
1. when installation is completed, fl ush the supply hose for around 30
minutes by piping water directly into the drain, without sending it
into the humidifi er. After installing the valve, fl ush with water to
eliminate any processing residues and oil and prevent that enter the
humidifi er;
2. the drain hose must have a minimum diameter of 6 mm; it must
not have any bends that block water fl ow; 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 humidifi er is sprayed with water
during operation, short circuits may occur;
5. if there is the risk of the feedwater freezing, insulate the
water pipes.
water drain
water inlet
drain pan
Fig. 2.a
2.3 Positioning
As seen in chap.1, the humidifi er must be installed in ducting where the
air velocity is between 1.5 and 3 m/s.
Note: when calculating air velocity in the duct, keep in mind that the
area occupied by the humidifi er 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
G
I
G
E
DP
Recommended location
Fig. 2.b
Key
G
I
Total air fl ow-rate introduced HU Humidifi er
CD Combined dampers DP Condensate collection tank
G
E
Outside air fl ow-rate CC Cooling coil
PC Heating coil
If assembling multiple humidifi ers, 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 effi cient operation. Install a manual
shut-off valve for each humidifi er.
Note: any obstacles in front to the humidifi er are places where water
may condense.
2.4 Water connections
Once the humidifi er has been fi tted, make the water connections as
follows:
1. Unscrew the screws (A) and remove the right side cover (B);
B
Carico/ Fill
Scaric
o
/ Drain
A
Fig. 2.c