Carel compactSteam, User Manual

Page: 42 / 60

14
ENG
“compactsteam” +0300092IE - rel. 1.3 - 16.08.2021
3.3 Characteristics of the supply water
The humidifi er 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;
• fl ow-rate minimum of 0.45 L/min or 0.12gpm.
The connection must be ¾” G (see chap. 8 “Technical specifi cations”):
• hardness no greater than 40°fH (equal to 400 ppm of CaCO
3
);
• 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 characteristics unit of
measure normal water water with low
salt content
min. max. min. max.
Hydrogen ions (pH) 7 8.5 7 8.5
Specifi c conductivity at 20 °C (
V
R,
20 °C
)
μS/cm 350 1250 100 350
Total dissolved solids (c
R
) mg/l (1) (1) (1) (1)
Dry residue at 180 °C (R
180
) mg/l (1) (1) (1) (1)
Total hardness (TH) mg/l CaCO
3
100 (2) 400 50 (2) 160
Temporary hardness mg/l CaCO
3
60 (3) 300 30 (3) 100
Iron + Manganese mg/l Fe+Mn = 0.2 = 0.2
Chlorides ppm Cl
-
= 30 = 20
Silica mg/l SiO2 = 20 = 20
Residual chlorine mg/l Cl
2
= 0.2 = 0.2
Calcium sulphate mg/l CaSO4 = 100 = 60
Metallic impurities mg/l 0 0 0 0
Solvents, thinners, detergents,
lubricants mg/l 0 0 0 0
Tab. 3.d
(1) = values depend on the specifi c conductivity; in general:
C
R
#
0.93 *
V
R, 20 °C
; R
180
#
0.65 *
V
R, 20 °C
(2) = not less than 200% of the chloride content in mg/l CL
-
(3) = not less than 300% of the chloride content in mg/l CL
-
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, aff ecting 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.
3.5 Water connections
Before proceeding make sure that the humidifi er is disconnected from
the main power supply.
Connection to the main water supply
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 humidifi er when connected to potable water.
Should on the other hand the humidifi er 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.
Install a manual valve upstream of the installation to be able to cut off
the water supply, as illustrated in Fig. 3.h. Connect the humidifi er to the
main water supply using a hose capable absorbing water hammer, to
avoid damaging the fi ll valve. The hoses are identifi ed by the following
CAREL codes: FWH3415000 (1.5 m /4ft long), FWH3 430000 (3 m /9.5ft
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 fi ll connector and this avoiding water leaks. The
threaded fi ll valve fi tting is located at the bottom of the humidifi er
(see Fig. 3.g). Remember that the fi ll valve is fi tted with a fi lter that
requires periodical cleaning. Make sure there is suffi
cient 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, fl ush the supply hose
for around 30 minutes by piping water directly into the drain, without
sending it into the humidifi er. 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.
CH***N2003
The drain pipe can be connected at the rear for these units only (as
shown in Fig. 3.i) or at the bottom part of the appliance, using the angle
connector supplied (Fig. 3.g and 3.h).
For rear connection, the drain pipe must have a minimum slope of at
least 5° (Fig. 3.i) and a drain trap must be installed to prevent drain odours
from escaping, as shown in Fig. 3.h.
In both cases, the drain pipe must have a minimum inside diameter of
32 mm (1-1/4”) and must be fi xed to the humidifi er drain outlet without
weighing on the unit.
Fig. 3.g
min. 5°
4
5
Fig. 3.h
(for CH***N2003)
Water drain
Fill valve and fi lter