D-EIMHP01601-22_00EN 14/25
1.
A flow switch must be installed in the water outlet pipe of the evaporator to prevent the unit from operating at a water flow
which is too low.
WARNING It is very important to install the flow switch as shown in the figure. Observe the position of the flow switch in
relation to the direction of the water flow. If the flow switch is mounted in any other position, the unit is not protected
properly against freezing.
Figure 10-Flowswitch installation
A specific terminal is provided in the switch box for the electrical connection of the flow switch. Refer to the wiring diagram
2.
Shut-off valves must be installed at the unit so that normal servicing of the water filter can be accomplished without
draining the complete system.
3.
Air purge valves must be provided at all high points of the system. The vents should be located at points which are
easily accessible for servicing.
4.
The water filter must be installed in front of the unit for removing dirt from the water to prevent damage to the unit or
malfunctioning of the evaporator.
5.
The water filter must be cleaned on a regular base.
Table 5- Water quality specification
DAE Water quality requirements
BPHE
Ph (25 °C)
7.5
– 9.0
Electrical conductivity [
μS/cm] (25°C)
< 500
Chloride ion [mg Cl
-
/ l]
< 70
Sulphate ion [mg SO
4
2-
/ l]
< 100
Alkalinity [mg CaCO
3
/ l]
< 200
Total Hardness [mg CaCO
3
/ l]
75 ÷ 150
Iron [mg Fe / l]
< 0.2
Ammonium ion [mg NH
4+
/ l]
< 0.5
Silica [mg SiO
2
/ l]
-
Chlorine molecular (mg Cl
2
/l)
< 0.5
10.1
Connecting the water circuit
The evaporator is provided with
GAS
female pipe thread connections for the water inlet and outlet (refer to the outlook diagram). Evaporator water
connections are to be made in accordance with the outlook diagram, respecting the water in- and outlet.
If air, moisture or dust gets in the water circuit, problems may occur. Therefore, always consider the following when connecting the water
circuit:
1.
Use clean pipes only.
2.
Hold the pipe end downwards when removing burrs.
3.
Cover the pipe end when inserting it through a wall so that no dust and dirt enter.
Summary of Contents for EWLQ014KCW1N
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