Carel compactSteam, User Manual

Page: 37 / 60

9
ENG
“compactsteam” +0300092IE - rel. 1.3 - 16.08.2021
1. COMPACTSTEAM OPERATION
Range of isothermal humidifi ers for steam production in rooms. The
steam is produced from the water contained in the cylinder (connected
to the mains). The water boils and evaporates due to the electric current
generated by two immersed electrodes in the cylinder.
1.1 Operating stages
• the humidifi er opens the fi ll valve (1) connected to the main water
supply;
• the water fl ows through the hose (2) to the tank (3), the fl ow restrictor
(4) controls the fi lling speed;
• when the tank is full, the water overfl ows into the hose (6) and starts
fi lling the cylinder (5);
• once the level of water in the cylinder has been reached, the humidifi er
closes the fi ll valve (1);
• the current generated by the immersed electrodes in the cylinder (7)
heats the water until it boils;
• the steam exits the cylinder through the outlet (8) and - depending on
the model of humidifi er - is distributed directly into the room (using a
fan), or into the duct (via a steam line).
Note:
• if the water in the cylinder exceeds the level sensor (9), the humidifi er
will activate the drain pump (11) and empty the excess quantity;
• if the current generated in the cylinder exceeds the required level, the
humidifi er will activate the drain pump (11) and discharge the amount
of water needed to restore the correct current;
• before emptying the humidifi er activates the tempering valve (10) to
cool the water to 60°C/140°F;
• the humidifi er automatically controls the quantity of mineral salts
dissolved in the water by activating the fi ll (1) and drain (11) pumps;
• the cylinder is fi tted with a fi lter (12) to prevent the mineral debris from
blocking the drain pump (11);
• if the humidifi er is in standby and does not produce steam for more
than 3 days (72 hours), the water in the cylinder is automatically
emptied;
• the fi ll tank (3) is connected to an overfl ow hose (13) to prevent contact
between the mains water and the water in the cylinder;
• the current running through the cylinder is controlled by the current
transformer connected to the electrodes (7).
HL
DP
DT
EVF
7
12
5
10
1
4
6
2
13
13
9
8
11
Fig. 1.a
Key:
No. Description No. Description
1 fi ll valve 8 steam outlet
2 fi ll hose 9 level sensor
3 fi ll tank 10 tempering valve
4 fl ow restrictor 11 drain pump
5 cylinder 12 water drain fi lter
6 cylinder fi ll hose 13 overfl ow hose
7 immersed electrodes
A
F
B
C
D
E
Fig. 1.b
Key:
No. Description
A Steam generator cylinder
B Steam blower (optional)
C User interface/display
D On/off button
E Fill and mixing valves
F Drain pump
1.2 Cylinder service life
Basic information
The plastic cylinder containing the electrodes is the most important
component of the humidifi er. During operation, the water in the cylinder
boils to produce steam. As the steam does not entrain any of the minerals
dissolved in the water, the concentration of such minerals will increase
the more steam is produced; moreover, some salts (especially calcium
and magnesium bicarbonates) tend to foul the electrodes, until these
become electrically insulated. As the electrodes become progressively
coated with scale, the water level in the cylinder is increased so that a
new portion of clean electrodes can conduct the current. Eventually, the
electrodes will be completely coated with scale and will no longer be
able to conduct the current needed to produce steam. The humidifi er
controller can detect when there is low current between the electrodes,
indicating the end of the cylinder’s service life; this is displayed by
alarm code E3. Several factors infl uence cylinder service life (water
characteristics, such as hardness and quality, % of steam production); for
the part numbers specifi ed in Table 8.a, the cylinder has a service life of
600 or more hours.
Water drain
Water fi ll