Carel HeaterSteam 4 UR002, User Manual

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14
ENG
“heaterSteam” +0300087EN - rel. 1.4 - 22.01.2021
2.1 Supply water
The supply water for the electric heater humidifi er must not be corrosive,
must not emit bad odours, and must not contain too much lime to
avoid excessive deposits. The water, supplied from mains of drinking
water or demineralised water, must have the following characteristics:
LIMIT VALUES FOR THE HEATER HUMIDIFIER WATER
Min Max
Specifi c conductivity at 20°C /68°fH σ20 - μS/cm 0 1500
Total dissolved solids TDS – mg/l (1) (1)
Fixed residual at 180°C/ 356°fH TDS – mg/l (1) (1)
Hydrogen ion activity pH 6 8.5
Total hardness TH– mg/l CaCO3 0 (2) 400
Temporary hardness mg/l CaCO3 0 (3) 300
Chlorides ppm Cl = 50(4)
Iron + Manganese mg/l Fe+Mn = 0.2
Silica mg/l SIO2 = 20
Residual Chlorine mg/l Cl- = 0.2
Calcium sulphate mg/l CaSO4 = 100
Metallic impurities mg/l 0 0
Solvents, diluents, detergents, lubricants mg/l 0 0
Tab. 2.a
1.
Values depending on the specifi c conductivity; in general: TDS ≈0,93 * σR, 20
°C; R180 ≈0,65 * σR , 20 °C;
2.
Not lower than 200% the content of chloride in mg/l Cl- ;
3.
Not lower than 300% the content of chloride in mg/l Cl- ;
4.
It could be necessary to intervene on the drain rate to avoid a concentration
in the boiling water higher than 300 mg/l Cl-;
For particularly aggressive water (conductivity <1 μS/cm), use titanium
heaters (heaterSteam titanium model).
Important: water treatment with polyphosphates or water
softeners is allowed, guaranteeing at least 60% of the initial
hardness value and no less than 5°f.
3. STEAM DISTRIBUTION
3.1 CAREL steam nozzles (SDPOEM00**)
Compact steam distributors for small ducts or applications such as steam
baths. They can be mounted either horizontally or vertically (steam
exhaust facing upwords).
Mounting instructions (see fi gure):
1.
drill a series of holes in the wall of the pipe, using the drilling jig of
the distributor;
2. insert the distributor;
3.
fasten the fl ange of the distributor using 4 screws.
31,5
50 50
31,5
50
31,5
31,5
57,5
100
C
C
B
A A B
D
Fig. 3.a
Key:
A. steam inlet
B. condensate drain
C.
steam outlet
The hole dimensions vary depending on the distributor model:
•
model SDPOEM0000: hole to be drilled manually,
up to 30 mm (1.2 in) diameter;
•
model SDPOEM0012: hole diameter 12 mm (0.5 in);
•
model SDPOEM0022: hole diameter 22 mm (0.9 in);
D. drilling jig
Note : if using steam hoses with an inside diameter of 30 mm (1.2 in),
remove the 22 mm (0.9 in) inlet section from the steam nozzle.
3.2 CAREL linear distributors for air ducts or
AHUs (DP***DR0)
The steam distributors for AHU or duct applications deliver steam along
their entire length in order to ensure the shortest not-wetting distance.
The distributor should be chosen based on the maximum required
capacity, the dimensions of the AHU/duct and the outlet diameter of
the humidifi er it is connected to. Install far from any obstacle (curves,
ramifi cation, section changes, grilles, fi lters, fans).
Minimum distance between distributor and obstacle: 1…1.5 m (3.3…4.9 ft).
Increase distance in case of:
1.
increase in speed of the air in the duct;
2. turbulence decrease.
Mounting instructions (see fi gure):
•
drill a series of holes in the wall of the pipe, using the drilling jig of the
distributor (found in the packaging of the distributor);
•
insert the distributor with the steam outlet holes facing upwards;
•
fasten the fl ange of the distributor using 4 screws.
B
Y
X
A
X
°2
L
5
4
3
2
1
9
6
8
Fig. 3.b
Softened water reduces maintenance requirements.
Softened water favors the concentration of dissolved salts in the water
inside the boiler, with the consequence of foam formation.
Not recommended:
1.
the use of well water, industrial water or water from cooling circuits
and, in general, water which may be chemically or bacteriologically
contaminated;
2. the addition to the water of disinfectants or anticorrosion
compounds, as these may cause irritation.
Note : no relationship can be proven between water hardness and
conductivity; nonetheless, as an indication only, water with a hardness of
40°f should have a conductivity of approximately 900-1000 mS/cm a 20 °C.
2.2 Drain water
•
contains the same substances dissolved in the supply water, but in
larger amounts;
•
it can reach a temperature of 100 °C (212° F);
•
it is not toxic and can be drained in the white waters collection
system.
3. for drain tempering versions, water temperature will be 60°C (140°F),
with temperature is max 25 °C guaranteed.
Important: completely demineralised water is aggressive. For
connection to a water system with fully demineralized water use
only installation items made of plastic resistant to chemicals (eg.
Polypropylene) or stainless steel.