Carel compactSteam - Supply Water Characteristics

14
ENG
“compactsteam” +0300092IE - rel. 1.2 - 14.01.2021
3.3 Characteristics of the supply water
The humidi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;
• ow-rate minimum of 0.45 L/min or 0.12gpm.
The connection must be ¾” G (see chap. 8 “Technical speci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
Specic conductivity at 20 °C (σ
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 specic conductivity; in general:
C
R
≅0.93 * σ
R, 20 °C
; R
180
≅0.65 * σ
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, a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 humidi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 humidier when connected to potable water.
Should on the other hand the humidi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 o
the water supply, as illustrated in Fig. 3.h. Connect the humidier to the
main water supply using a hose capable absorbing water hammer, to
avoid damaging the ll valve. The hoses are identi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 ll connector and this avoiding water leaks. The
threaded ll valve tting is located at the bottom of the humidier
(see Fig. 3.g). Remember that the ll valve is tted with a lter that
requires periodical cleaning. Make sure there is su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, ush the supply hose
for around 30 minutes by piping water directly into the drain, without
sending it into the humidi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.
CH004N2003 and CHF04N2003
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 xed to the humidier drain outlet without
weighing on the unit.
Fig. 3.g
min. 5°
4
5
Fig. 3.h
(for CH004N2003 and CHF04N2003)
Water drain
Fill valve and lter