Table of Contents
Advertisement
INSTALLATION
PRE-INSTALLATION
Prior to install the equipment, make sure of the following points:
• Leave enough space for access to air supply, water section, power supply and condensed outlet.
• The water section must have the correspondent valves.
• Easy extraction of the air filter.
• Easy access to lateral panel for easy accessibility to all services of the unit.
• Unit must be mounted with antivibration.
• The electrical section must be done following legal normative
• Check that the tension is the same as installation place.
• Keep in mind power supply for maximum consumption for each unit.
• Check water quality, across analysis according to local normative. If quality of water is not good, it may be necessary to install
a device to decalcify.
• Corrosion resistance of plates exchanger: The resistance guide below is an attempt of give a picture of the corrosion resistance
of the stainless steel of the type AISI 316 and pure copper in the water, to a number of important chemical factors. The actual
corrosion is however a very complex process influenced by many factors in combination. This table is therefore a considerable
simplification and should not be overvalued.
WATER CONTAINING
Alcanity (HCNO
)
3
Sulfate (SO
2-
)
4
HCO
/ SO
2-
3
4
Electrical conductivity
pH
Ammonium (NH
)
3
Chloroides (Cl - )
Free chlorine (Cl
)
2
Hydrogen sulfide (H
S)
2
Free (aggressive) Carbon Dioxide (CO
Total hardness (ºdH)
Nitrate (NO
)
3
Iron (Fe)
Aluminum (Al)
Manganese (Mn)
• Keep in mind water inlet temperature to the unit. If this temperature is below 15ºC for cooling only units (FWCK), you will need
to install a water regulation pressostatic valve (as an option element) to keep condensation temperature value between 40
and 45ºC.
It is very important that the unit works with water flows between maximum and minimum values according to the
tables. You have to calculate water pump and install regulation valve if they are needed, in order to be sure that
the unit works with water flow values indicated in the tables. Specially for heat pump units FWHK in heating mode,
if the unit works with water flow below specified values, the unit can be seriously damaged, water exchanger can
be frozen.
Flow switch can be asked as an option. It stops the unit if there no water flow or if the water flow is below minimum value.
• Be sure that air flow is according to the ducts installation.
CONCENTRATION
mg/l or ppm
<70
70-300
>300
<70
70-300
>300
>1.0
<1.0
<10 µS/cm
10-500 µS/cm
>500 µS/cm
<6.0
6.0-7.5
7.5-9.0
>9.0
<2
2-20
>20
<50
>50
<1
1-5
>5
<0.05
>0.05
<5
)
2
5-20
>20
4.0-8.5
<100
>100
<0.2
>0.2
<0.2
>0.2
<0.1
>0.1
AISI 316
COPPER
+
0
+
+
+
0
+
+
+
-
0
-
+
+
+
-
+
0
+
+
+
0
0
0
0/+
0
+
+
+
0
+
+
+
0
+
-
+
+
0
0
+
+
+
0
0/+
-
+
+
+
-
+
+
+
0
+
-
Explanations:
+
+
+ Good resistance under normal conditions.
+
+
+
0
0 Corrosion problems can occur especially
+
+
when the factors are valued as 0.
+
0
- Use is not recommended
+
+
+
0
+
+
+
0
11
Hide quick links:
Advertisement
Table of Contents
