Characteristics Of The Supply Water; Drain Water; Water Connections - Carel compactSteam Mode D'emploi

3.3 Characteristics of the supply water

The humidifier must be supplied with water with the following
characteristics:
• pressure between 20psi and 110psi or 0.1 and 0.8 MPa (1 and 8
bar);
• temperature between 33°F and 104°F or 1°C and 40°C;
• flow-rate minimum of 0.45 L/min or 0.12gpm.
The connection must be ¾" G (see chap. 8 "Technical
specifications"):
• hardness no greater than 40°fH (equal to 400 ppm of CaCO
• conductivity: from 100 to 1250 μS/cm;
• absence of organic compounds.
The characteristics of the supply-water must fall within the
following limits:
supply water character- unit of
istics measure
Hydrogen ions (pH)
Specific conductivity at 20 µS/cm
°C (σ )
R, 20 °C
Total dissolved solids (c ) mg/l
R
Dry residue at 180 °C (R ) mg/l
180
Total hardness (TH) mg/l
CaCO
3
Temporary hardness mg/l
CaCO
3
Iron + Manganese mg/l
Fe+Mn
Chlorides ppm Cl
Silica mg/l SiO2 =
Residual chlorine mg/l Cl
Calcium sulphate mg/l
CaSO4
Metallic impurities mg/l
Solvents, thinners, deter- mg/l
gents, lubricants
= values depend on the specific conductivity; in general:
(1)
C ≅0.93 * σ ; R ≅0.65 * σ
180
R R, 20 °C R, 20 °C
(2) = not less than 200% of the chloride content in mg/l CL
= not less than 300% of the chloride content in mg/l CL
(3)
There is no reliable relationship between hardness and
conductivity of the water.
Important:
• do not treat the water with softeners, this may cause the
entrainment of foam, affecting the operation of the unit;
• do not add disinfectants or anticorrosive compounds to the
water, as these are potential irritants;
• the use of well water, industrial water or water from cooling
circuits and, in general, any potentially chemically or
bacteriologically contaminated water is not recommended.

3.4 Drain water

• This contains the same substances dissolved in the supply
water, however in higher quantities;
• it is cooled to 60°C / 140°F by mixing it with supply water;
• it is not toxic and can be drained into the sewerage system.
"compactsteam" +03U0092EF - rel. 1.0 - 2020.08.31
);
3
normal water water with
low salt
content
min. max. min. max.
7 8.5 7 8.5
350 1250 100 350
(1) (1) (1) (1)
(1) (1) (1) (1)
100 (2) 400 50 (2) 160
60 (3) 300 30 (3) 100
= 0.2 = 0.2
= 30 = 20
-
20 = 20
= 0.2 = 0.2
2
= 100 = 60
0 0 0 0
0 0 0 0
Tab. 3.c
-
-

3.5 Water connections

Before proceeding make sure that the humidifier is
disconnected from the main power supply.
Connection to the main water supply
Install a manual valve upstream of the installation to be able to cut
off the water supply. Connect the humidifier to the main water
supply using a hose capable absorbing water hammer, to avoid
damaging the fill valve. The hoses are identified by the following
CAREL code: FWH3415003 (1.5 m /4ft long). Alternatively, a hose
with a minimum inside diameter of 6 mm / 1/4" can be used.
If soft polymer tubing is used, secure this to the wall to prevent
it from detaching from the fill connector and this avoiding water
leaks. The threaded fill valve fitting is located at the bottom of the
humidifier (see Fig. 3.g). Remember that the fill valve is fitted with a
filter that requires periodical cleaning. Make sure there is sufficient
clearance for maintenance. The water line can be connected
either through the holes at the rear (so that these remain hidden
behind the unit) or through the holes at the bottom of the unit.
Important: 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. This will eliminate
any scale or processing residues that may block the drain pump
and cause foam when boiling
Water drain
In addition to the connection to the feedwater supply,
compactSteam also requires a connection to a drain pipe so as
to empty the water from inside the cylinder whenever necessary.
Water drain
16
Fill valve and filter
Fig. 3.e